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Disabled external gits

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This commit is contained in:
choelzl
2022-04-07 18:46:57 +02:00
parent 88cb3426ad
commit 15e7120d6d
5316 changed files with 4563444 additions and 6 deletions
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17
cs440-acg/ext/nanogui/.appveyor.yml Normal file
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version: 1.0.{build}
os: Visual Studio 2015
test: off
clone_folder: C:\projects\nanogui
branches:
only:
- master
install:
- git submodule update --init --recursive
- cinstall: python
build_script:
- echo Running cmake...
- cd c:\projects\nanogui
- cmake -G "Visual Studio 14 2015 Win64" -DPYTHON_EXECUTABLE:FILEPATH=C:/Python34-x64/python.exe .
- set MSBuildLogger="C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll"
- set MSBuildOptions=/v:m /p:Configuration=Release /logger:%MSBuildLogger%
- msbuild %MSBuildOptions% nanogui.sln

49
cs440-acg/ext/nanogui/.gitignore vendored Normal file
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*.exe
*.lib
*.cmake
.DS_Store
ext_build
nanogui_resources.*
build
CMakeCache.txt
CMakeFiles
.ninja_deps
.ninja_log
build.ninja
rules.ninja
Makefile
bin2c
example[1-9]
example[1-9].bc
example[1-9].wasm
example[1-9].js
example[1-9].exe
example_icons
example_icons.bc
example_icons.js
example_icons.wasm
example_icons.exe
icons
*~
nanogui*.so
nanogui*.pyd
libnanogui.so
libnanogui.a
libnanogui.bc
libnanogui.dylib
*.metallib
.vscode/
# html documentation specific
*.pyc
docs/_build
docs/doxyoutput
docs/api
# entypo update generation
# this is it's own repo: https://github.com/svenevs/nanogui-entypo
# should not ever be needed again unless there are new
# icons added :)
resources/nanogui-entypo
compile_commands.json
.clangd

12
cs440-acg/ext/nanogui/.gitmodules vendored Normal file
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[submodule "ext/nanovg"]
path = ext/nanovg
url = https://github.com/wjakob/nanovg
[submodule "ext/nanovg_metal"]
path = ext/nanovg_metal
url = https://github.com/wjakob/nanovg_metal
[submodule "ext/glfw"]
path = ext/glfw
url = https://github.com/wjakob/glfw
[submodule "ext/pybind11"]
path = ext/pybind11
url = https://github.com/pybind/pybind11

47
cs440-acg/ext/nanogui/.travis.yml Normal file
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language: cpp
dist: trusty
sudo: false
# Only build master branch, other branches will have a Pull Request build.
branches:
only:
- master
matrix:
include:
- os: linux
compiler: gcc-4.8
addons:
apt:
sources:
- ubuntu-toolchain-r-test
- deadsnakes
- kubuntu-backports
packages:
- g++-4.8
- python3.5
- python3.5-dev
- python3.5-venv
- libglu1-mesa-dev
- libxxf86vm-dev
- libxrandr-dev
- libxinerama-dev
- libxcursor-dev
- libxi-dev
- libx11-dev
- cmake
script:
- cmake --version
- cmake -DNANOGUI_USE_GLAD=ON -DNANOGUI_PYTHON_VERSION=3.5 -DPYTHON_INCLUDE_DIRS:PATH=/usr/include/python3.5m -DPYTHON_LIBRARY:FILEPATH=/usr/lib/x86_64-linux-gnu/libpython3.5m.so -DCMAKE_CXX_COMPILER=g++-4.8 -DCMAKE_C_COMPILER=gcc-4.8
- make -j 2
- os: osx
compiler: clang
script:
- cmake --version
- cmake -DNANOGUI_PYTHON_VERSION=2.7
- make -j 2
- os: linux
language: docs
env: STYLE
script:
- resources/check-style.sh

533
cs440-acg/ext/nanogui/CMakeLists.txt Normal file
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cmake_minimum_required (VERSION 3.13..3.18)
project(nanogui
DESCRIPTION
"NanoGUI"
LANGUAGES
CXX C
)
if (NOT IS_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/ext/glfw/src")
message(FATAL_ERROR "The NanoGUI dependency repositories (GLFW, etc.) are missing! "
"You probably did not clone the project with --recursive. It is possible to recover "
"by calling \"git submodule update --init --recursive\"")
endif()
if (NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
message(STATUS "Setting build type to 'Release' as none was specified.")
set(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build." FORCE)
set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release"
"MinSizeRel" "RelWithDebInfo")
endif()
string(TOUPPER "${CMAKE_BUILD_TYPE}" U_CMAKE_BUILD_TYPE)
set(NANOGUI_MASTER_PROJECT OFF)
if (${CMAKE_CURRENT_SOURCE_DIR} STREQUAL ${CMAKE_SOURCE_DIR})
set(NANOGUI_MASTER_PROJECT ON)
endif()
if (WIN32)
set(NANOGUI_BUILD_GLAD_DEFAULT ON)
else()
set(NANOGUI_BUILD_GLAD_DEFAULT OFF)
endif()
set(NANOGUI_BUILD_SHARED_DEFAULT ON)
set(NANOGUI_BUILD_PYTHON_DEFAULT ON)
set(NANOGUI_BUILD_GLFW_DEFAULT ON)
if (CMAKE_CXX_COMPILER MATCHES "/em\\+\\+(-[a-zA-Z0-9.])?$")
set(CMAKE_CXX_COMPILER_ID "Emscripten")
set(NANOGUI_BUILD_SHARED_DEFAULT OFF)
set(NANOGUI_BUILD_PYTHON_DEFAULT OFF)
set(NANOGUI_BUILD_GLAD_DEFAULT OFF)
set(NANOGUI_BUILD_GLFW_DEFAULT OFF)
set(CMAKE_STATIC_LIBRARY_SUFFIX ".bc")
set(CMAKE_EXECUTABLE_SUFFIX ".bc")
set(CMAKE_CXX_CREATE_STATIC_LIBRARY "<CMAKE_CXX_COMPILER> -o <TARGET> <LINK_FLAGS> <OBJECTS>")
if (U_CMAKE_BUILD_TYPE MATCHES REL)
add_compile_options(-O3 -DNDEBUG)
endif()
endif()
option(NANOGUI_BUILD_EXAMPLES "Build NanoGUI example application?" ON)
option(NANOGUI_BUILD_SHARED "Build NanoGUI as a shared library?" ${NANOGUI_BUILD_SHARED_DEFAULT})
option(NANOGUI_BUILD_PYTHON "Build a Python plugin for NanoGUI?" ${NANOGUI_BUILD_PYTHON_DEFAULT})
option(NANOGUI_BUILD_GLAD "Build GLAD OpenGL loader library? (needed on Windows)" ${NANOGUI_BUILD_GLAD_DEFAULT})
option(NANOGUI_BUILD_GLFW "Build GLFW?" ${NANOGUI_BUILD_GLFW_DEFAULT})
option(NANOGUI_INSTALL "Install NanoGUI on `make install`?" ON)
if (NOT NANOGUI_BACKEND)
if (CMAKE_SYSTEM_PROCESSOR MATCHES "armv7" OR
CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64" OR
CMAKE_CXX_COMPILER MATCHES "/em\\+\\+(-[a-zA-Z0-9.])?$")
set(NANOGUI_BACKEND_DEFAULT "GLES 2")
elseif (APPLE)
set(NANOGUI_BACKEND_DEFAULT "Metal")
else()
set(NANOGUI_BACKEND_DEFAULT "OpenGL")
endif()
set(NANOGUI_BACKEND ${NANOGUI_BACKEND_DEFAULT} CACHE STRING "Choose the backend used for rendering (OpenGL/GLES 2/GLES 3/Metal)" FORCE)
endif()
set_property(CACHE NANOGUI_BACKEND PROPERTY STRINGS "OpenGL" "GLES 2" "GLES 3" "Metal")
# Required libraries, flags, and include files for compiling and linking against nanogui (all targets)
set(NANOGUI_EXTRA_INCS "")
include(CheckCXXCompilerFlag)
include(CheckCXXSourceRuns)
macro(CHECK_CXX_COMPILER_AND_LINKER_FLAGS _RESULT _CXX_FLAGS _LINKER_FLAGS)
set(CMAKE_REQUIRED_FLAGS ${_CXX_FLAGS})
set(CMAKE_REQUIRED_LIBRARIES ${_LINKER_FLAGS})
set(CMAKE_REQUIRED_QUIET TRUE)
check_cxx_source_runs("#include <iostream>\nint main(int argc, char **argv) { std::cout << \"test\"; return 0; }" ${_RESULT})
set(CMAKE_REQUIRED_FLAGS "")
set(CMAKE_REQUIRED_LIBRARIES "")
endmacro()
if (NANOGUI_BACKEND MATCHES "(OpenGL|GLES 2|GLES 3)")
list(APPEND NANOGUI_EXTRA
src/texture_gl.cpp src/shader_gl.cpp
src/renderpass_gl.cpp src/opengl.cpp
src/opengl_check.h
)
endif()
if (NANOGUI_BACKEND STREQUAL "OpenGL")
set(NANOGUI_BACKEND_DEFS -DNANOGUI_USE_OPENGL)
set(NANOGUI_GLOB "resources/*.gl")
message(STATUS "NanoGUI: using OpenGL backend.")
elseif (NANOGUI_BACKEND STREQUAL "GLES 2")
set(NANOGUI_BACKEND_DEFS -DNANOGUI_USE_GLES -DNANOGUI_GLES_VERSION=2)
set(NANOGUI_GLOB "resources/*.gles")
message(STATUS "NanoGUI: using GLES 2 backend.")
elseif (NANOGUI_BACKEND STREQUAL "GLES 3")
set(NANOGUI_BACKEND_DEFS -DNANOGUI_USE_GLES -DNANOGUI_GLES_VERSION=3)
set(NANOGUI_GLOB "resources/*.gles")
message(STATUS "NanoGUI: using GLES 3 backend.")
elseif (NANOGUI_BACKEND STREQUAL "Metal")
set(NANOGUI_BACKEND_DEFS -DNANOGUI_USE_METAL)
list(APPEND NANOGUI_EXTRA
ext/nanovg_metal/src/nanovg_mtl.m ext/nanovg_metal/src/nanovg_mtl.h
src/texture_metal.mm src/shader_metal.mm src/renderpass_metal.mm
)
set(NANOGUI_GLOB "resources/*.metal")
include_directories(ext/nanovg_metal/src)
message(STATUS "NanoGUI: using Metal backend.")
endif()
# Shared library mode: add dllimport/dllexport flags to all symbols
if (NANOGUI_BUILD_SHARED)
message(STATUS "NanoGUI: building shared library.")
else()
message(STATUS "NanoGUI: building static library.")
endif()
if (MSVC)
# Disable annoying MSVC warnings (all targets)
add_definitions(/D "_CRT_SECURE_NO_WARNINGS")
# Parallel build on MSVC (all targets)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP")
endif()
# Compile with compiler warnings turned on
if (MSVC)
if (CMAKE_CXX_FLAGS MATCHES "/W[0-4]")
string(REGEX REPLACE "/W[0-4]" "/W4" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
else()
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W4")
endif()
elseif (CMAKE_CXX_COMPILER_ID MATCHES "Clang" OR CMAKE_CXX_COMPILER_ID MATCHES "GNU")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra")
endif()
# Use C++17, visibility=hidden by default, interprocedural optimization
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_VISIBILITY_PRESET hidden)
# Prefer libc++ in conjunction with Clang
if (CMAKE_CXX_COMPILER_ID MATCHES "Clang" AND NOT CMAKE_CXX_FLAGS MATCHES "-stdlib=libc\\+\\+")
CHECK_CXX_COMPILER_AND_LINKER_FLAGS(HAS_LIBCPP "-stdlib=libc++" "-stdlib=libc++")
if (HAS_LIBCPP)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++ -D_LIBCPP_VERSION")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -stdlib=libc++")
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -stdlib=libc++")
message(STATUS "NanoGUI: using libc++.")
else()
CHECK_CXX_COMPILER_AND_LINKER_FLAGS(HAS_LIBCPP_AND_CPPABI "-stdlib=libc++" "-stdlib=libc++ -lc++abi")
if (HAS_LIBCPP_AND_CPPABI)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++ -D_LIBCPP_VERSION")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -stdlib=libc++ -lc++abi")
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -stdlib=libc++ -lc++abi")
message(STATUS "NanoGUI: using libc++ and libc++abi.")
else()
message(FATAL_ERROR "When Clang is used to compile NanoGUI, libc++ must be available -- GCC's libstdc++ is not supported! (please insteall the libc++ development headers, provided e.g. by the packages 'libc++-dev' and 'libc++abi-dev' on Debian/Ubuntu).")
endif()
endif()
endif()
# Compile GLFW
if (NANOGUI_BUILD_GLFW)
set(GLFW_BUILD_EXAMPLES OFF CACHE BOOL " " FORCE)
set(GLFW_BUILD_TESTS OFF CACHE BOOL " " FORCE)
set(GLFW_BUILD_DOCS OFF CACHE BOOL " " FORCE)
set(GLFW_BUILD_INSTALL OFF CACHE BOOL " " FORCE)
set(GLFW_INSTALL OFF CACHE BOOL " " FORCE)
set(GLFW_USE_CHDIR OFF CACHE BOOL " " FORCE)
set(BUILD_SHARED_LIBS ${NANOGUI_BUILD_SHARED} CACHE BOOL " " FORCE)
if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
# Quench annoying deprecation warnings when compiling GLFW on OSX
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-deprecated-declarations")
endif()
add_subdirectory(ext/glfw)
# Two targets have now been defined: `glfw_objects`, which will be merged into
# NanoGUI at the end, and `glfw`. The `glfw` target is the library itself
# (e.g., libglfw.so), but can be skipped as we do not need to link against it
# (because we merge `glfw_objects` into NanoGUI). Skipping is required for
# XCode, but preferable for all build systems (reduces build artifacts).
set_target_properties(glfw PROPERTIES EXCLUDE_FROM_ALL 1 EXCLUDE_FROM_DEFAULT_BUILD 1)
mark_as_advanced(
GLFW_BUILD_DOCS GLFW_BUILD_EXAMPLES GLFW_BUILD_INSTALL GLFW_BUILD_TESTS
GLFW_DOCUMENT_INTERNALS GLFW_INSTALL GLFW_USE_CHDIR GLFW_USE_MENUBAR
GLFW_USE_OSMESA GLFW_VULKAN_STATIC GLFW_USE_RETINA GLFW_USE_MIR
BUILD_SHARED_LIBS USE_MSVC_RUNTIME_LIBRARY_DLL)
endif()
if (NANOGUI_BUILD_GLAD)
# Build and include GLAD on Windows
list(APPEND NANOGUI_EXTRA
ext/glad/src/glad.c
ext/glad/include/glad/glad.h
ext/glad/include/KHR/khrplatform.h)
if (MSVC)
set_source_files_properties(ext/glad/src/glad.c
PROPERTIES COMPILE_FLAGS /wd4055)
endif()
endif()
if (${CMAKE_SYSTEM_NAME} MATCHES "BSD")
include_directories(/usr/local/include)
link_directories(/usr/local/lib)
if (${CMAKE_SYSTEM_NAME} MATCHES "OpenBSD")
include_directories(/usr/X11R6/include/)
link_directories(/usr/X11R6/lib)
endif()
endif()
# Required core libraries on various platforms
if (${CMAKE_CXX_COMPILER_ID} MATCHES "Emscripten")
# No dependencies
elseif (WIN32)
list(APPEND NANOGUI_LIBS opengl32)
elseif (APPLE)
find_library(cocoa_library Cocoa)
find_library(iokit_library IOKit)
list(APPEND NANOGUI_LIBS ${cocoa_library} ${iokit_library})
mark_as_advanced(cocoa_library iokit_library)
if (NANOGUI_BACKEND STREQUAL "OpenGL")
find_library(corevideo_library CoreVideo)
find_library(opengl_library OpenGL)
# Disable OpenGL deprecation warnings
add_definitions(-DGL_SILENCE_DEPRECATION)
list(APPEND NANOGUI_LIBS ${opengl_library} ${corevideo_library})
mark_as_advanced(opengl_library corevideo_library)
else()
find_library(metal_library Metal)
find_library(quartzcore_library QuartzCore)
list(APPEND NANOGUI_LIBS ${metal_library} ${quartzcore_library})
mark_as_advanced(metal_library quartzcore_library)
endif()
list(APPEND NANOGUI_EXTRA src/darwin.mm)
elseif (CMAKE_SYSTEM MATCHES "Linux" OR CMAKE_SYSTEM_NAME MATCHES "BSD")
list(APPEND NANOGUI_LIBS X11 pthread)
if (NANOGUI_BACKEND STREQUAL "OpenGL")
list(APPEND NANOGUI_LIBS GL)
elseif (NANOGUI_BACKEND STREQUAL "GLES 2")
list(APPEND NANOGUI_LIBS GLESv2)
elseif (NANOGUI_BACKEND STREQUAL "GLES 3")
list(APPEND NANOGUI_LIBS GLESv3)
endif()
if (NOT CMAKE_SYSTEM_NAME MATCHES "OpenBSD")
list(APPEND NANOGUI_LIBS rt)
endif()
if (CMAKE_SYSTEM MATCHES "Linux")
list(APPEND NANOGUI_LIBS dl)
endif()
endif()
# Run simple cmake converter to put font files into the data segment
# Glob up resource files
file(GLOB resources
"${CMAKE_CURRENT_SOURCE_DIR}/resources/*.ttf"
"${NANOGUI_GLOB}")
file(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/resources")
# Precompile .metal shaders to .metallib files
foreach(fname_in IN LISTS resources)
if (NANOGUI_BACKEND STREQUAL "Metal" AND fname_in MATCHES "\\.metal")
get_filename_component(fname_out ${fname_in} NAME)
set(fname_out "${CMAKE_CURRENT_BINARY_DIR}/resources/${fname_out}lib")
add_custom_command(
OUTPUT ${fname_out}
DEPENDS ${fname_in}
COMMAND xcrun -sdk macosx metal -std=osx-metal2.0 -O3 "${fname_in}" -o "${fname_out}"
VERBATIM
)
else()
set(fname_out "${fname_in}")
endif()
list(APPEND resources_processed ${fname_out})
endforeach()
# Concatenate resource files into a comma separated string
string(REGEX REPLACE "([^\\]|^);" "\\1," resources_string "${resources_processed}")
string(REGEX REPLACE "[\\](.)" "\\1" resources_string "${resources_string}")
# Create command line for running bin2c cmake script
set(bin2c_cmdline
-DOUTPUT_C=nanogui_resources.cpp
-DOUTPUT_H=nanogui_resources.h
"-DINPUT_FILES=${resources_string}"
-P "${CMAKE_CURRENT_SOURCE_DIR}/resources/bin2c.cmake")
# Run bin2c on resource files
add_custom_command(
OUTPUT nanogui_resources.cpp nanogui_resources.h
COMMAND ${CMAKE_COMMAND} ARGS ${bin2c_cmdline}
DEPENDS ${resources} ${resources_processed}
COMMENT "Running bin2c"
PRE_BUILD VERBATIM)
# Needed to generated files
include_directories(${CMAKE_CURRENT_BINARY_DIR})
# Set library type
if (NANOGUI_BUILD_SHARED)
set(NANOGUI_LIBRARY_TYPE "SHARED")
else()
set(NANOGUI_LIBRARY_TYPE "STATIC")
endif()
if (APPLE AND CMAKE_CXX_COMPILER_ID MATCHES "Clang")
# Use automatic reference counting for Objective-C portions
add_compile_options(-fobjc-arc)
endif()
if (NANOGUI_BUILD_GLFW)
list(APPEND NANOGUI_EXTRA $<TARGET_OBJECTS:glfw_objects>)
endif()
# Compile main NanoGUI library
add_library(nanogui ${NANOGUI_LIBRARY_TYPE}
# Merge NanoVG into the NanoGUI library
ext/nanovg/src/nanovg.c
ext/nanovg/src/stb_image.h
# Merge GLAD into the NanoGUI library (only if needed)
${NANOGUI_EXTRA}
# Fonts etc.
nanogui_resources.cpp
include/nanogui/common.h src/common.cpp
include/nanogui/widget.h src/widget.cpp
include/nanogui/theme.h src/theme.cpp
include/nanogui/layout.h src/layout.cpp
include/nanogui/screen.h src/screen.cpp
include/nanogui/label.h src/label.cpp
include/nanogui/window.h src/window.cpp
include/nanogui/popup.h src/popup.cpp
include/nanogui/checkbox.h src/checkbox.cpp
include/nanogui/button.h src/button.cpp
include/nanogui/popupbutton.h src/popupbutton.cpp
include/nanogui/combobox.h src/combobox.cpp
include/nanogui/progressbar.h src/progressbar.cpp
include/nanogui/slider.h src/slider.cpp
include/nanogui/messagedialog.h src/messagedialog.cpp
include/nanogui/textbox.h src/textbox.cpp
include/nanogui/textarea.h src/textarea.cpp
include/nanogui/imagepanel.h src/imagepanel.cpp
include/nanogui/vscrollpanel.h src/vscrollpanel.cpp
include/nanogui/colorwheel.h src/colorwheel.cpp
include/nanogui/colorpicker.h src/colorpicker.cpp
include/nanogui/graph.h src/graph.cpp
include/nanogui/tabwidget.h src/tabwidget.cpp
include/nanogui/canvas.h src/canvas.cpp
include/nanogui/texture.h src/texture.cpp
include/nanogui/shader.h src/shader.cpp
include/nanogui/imageview.h src/imageview.cpp
include/nanogui/traits.h src/traits.cpp
include/nanogui/renderpass.h
include/nanogui/formhelper.h
include/nanogui/icons.h
include/nanogui/toolbutton.h
include/nanogui/opengl.h
include/nanogui/nanogui.h
)
target_compile_definitions(nanogui
PUBLIC
${NANOGUI_BACKEND_DEFS}
PRIVATE
-DNANOGUI_BUILD
-DNVG_STB_IMAGE_IMPLEMENTATION
)
target_include_directories(nanogui
PUBLIC
${CMAKE_CURRENT_SOURCE_DIR}/include
PRIVATE
ext/nanovg/src
${CMAKE_CURRENT_BINARY_DIR}
)
if (NANOGUI_BUILD_SHARED)
target_compile_definitions(nanogui
PUBLIC
-DNANOGUI_SHARED -DNVG_SHARED
PRIVATE
-DNVG_BUILD
)
if (NANOGUI_BUILD_GLAD)
target_compile_definitions(nanogui
PUBLIC
-DGLAD_GLAPI_EXPORT
PRIVATE
-DGLAD_GLAPI_EXPORT_BUILD
)
endif()
if (NANOGUI_BUILD_GLFW)
target_compile_definitions(nanogui PRIVATE _GLFW_BUILD_DLL)
endif()
endif()
target_include_directories(nanogui PUBLIC
"${CMAKE_CURRENT_SOURCE_DIR}/ext/nanovg/src")
if (NANOGUI_BUILD_GLAD)
target_compile_definitions(nanogui PUBLIC -DNANOGUI_GLAD)
target_include_directories(nanogui
PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/ext/glad/include")
endif()
if (NANOGUI_BUILD_GLFW)
target_include_directories(nanogui
PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/ext/glfw/include")
endif()
if (NANOGUI_BUILD_SHARED)
target_link_libraries(nanogui PRIVATE ${NANOGUI_LIBS})
set_property(TARGET nanogui PROPERTY INTERPROCEDURAL_OPTIMIZATION ON)
set_property(TARGET nanogui PROPERTY DEFINE_SYMBOL "")
else()
target_link_libraries(nanogui PUBLIC ${NANOGUI_LIBS})
endif()
# Auto-detect GLES include directory on Raspberry PI
if (EXISTS /opt/vc/include)
target_include_directories(nanogui PUBLIC /opt/vc/include)
endif()
if (NANOGUI_INSTALL)
install(TARGETS nanogui
LIBRARY DESTINATION lib
ARCHIVE DESTINATION lib)
install(DIRECTORY include/nanogui DESTINATION include
FILES_MATCHING PATTERN "*.h")
endif()
# Quench warnings while compiling NanoVG
if (CMAKE_COMPILER_IS_GNUCC)
set_source_files_properties(ext/nanovg/src/nanovg.c PROPERTIES COMPILE_FLAGS -Wno-unused-result)
elseif(MSVC)
set_source_files_properties(ext/nanovg/src/nanovg.c PROPERTIES COMPILE_FLAGS "/wd4005 /wd4456 /wd4457")
endif()
# Build example application if desired
if (NANOGUI_BUILD_EXAMPLES)
add_executable(example1 src/example1.cpp)
add_executable(example2 src/example2.cpp)
add_executable(example3 src/example3.cpp)
add_executable(example4 src/example4.cpp)
add_executable(example_icons src/example_icons.cpp)
target_link_libraries(example1 nanogui)
target_link_libraries(example2 nanogui)
target_link_libraries(example3 nanogui ${NANOGUI_LIBS}) # For OpenGL
target_link_libraries(example4 nanogui)
target_link_libraries(example_icons nanogui)
# Copy icons for example application
file(COPY resources/icons DESTINATION ${CMAKE_CURRENT_BINARY_DIR})
endif()
if (NANOGUI_BUILD_PYTHON)
message(STATUS "NanoGUI: building the Python plugin.")
if (NOT TARGET pybind11::module)
find_package(Python COMPONENTS Interpreter Development REQUIRED)
# Allow overriding the pybind11 library used to compile NanoGUI
set(NANOGUI_PYBIND11_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ext/pybind11"
CACHE STRING "Path containing the 'pybind11' library used to compile nanogui.")
add_subdirectory(${NANOGUI_PYBIND11_DIR} ext/pybind11)
mark_as_advanced(
USE_PYTHON_INCLUDE_DIR PYBIND11_INSTALL PYBIND11_TEST PYBIND11_NOPYTHON
PYBIND11_FINDPYTHON PYBIND11_PYTHON_VERSION PYBIND11_WERROR
NANOGUI_PYBIND11_DIR
)
endif()
add_subdirectory(python)
else()
message(STATUS "NanoGUI: not building the Python plugin.")
endif()
if (NANOGUI_BUILD_PYTHON AND NANOGUI_MASTER_PROJECT)
# Create documentation for python plugin (optional target for developers)
string(REPLACE " " ";" MKDOC_CXX_FLAGS ${CMAKE_CXX_FLAGS})
get_property(MKDOC_INCLUDE_DIRECTORIES DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY INCLUDE_DIRECTORIES)
get_property(MKDOC_COMPILE_DEFINITIONS DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY COMPILE_DEFINITIONS)
foreach (value ${MKDOC_INCLUDE_DIRECTORIES})
list(APPEND MKDOC_CXX_FLAGS -I${value})
endforeach()
# Make sure platform specific code gets kept in py_doc.h (specifically __doc_nanogui_chdir_to_bundle_parent)
list(APPEND MKDOC_COMPILE_DEFINITIONS "DOXYGEN_DOCUMENTATION_BUILD")
foreach (value ${MKDOC_COMPILE_DEFINITIONS})
list(APPEND MKDOC_CXX_FLAGS -D${value})
endforeach()
add_custom_target(docstrings USES_TERMINAL COMMAND
${Python_EXECUTABLE} -m pybind11_mkdoc -std=c++17 -stdlib=libc++
${MKDOC_CXXFLAGS}
${NANOGUI_BACKEND_DEFS}
-I${PROJECT_SOURCE_DIR}/include
-I${PROJECT_SOURCE_DIR}/ext/glfw/include
-I${PROJECT_SOURCE_DIR}/ext/nanovg/src
${PROJECT_SOURCE_DIR}/include/nanogui/*.h
-o ${CMAKE_CURRENT_SOURCE_DIR}/python/py_doc.h
)
endif()
# vim: set et ts=2 sw=2 ft=cmake nospell:

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Contributing
========================================================================================
Thank you for your interest in this project! Please refer to the following sections on
how to contribute code and bug reports.
Reporting bugs
----------------------------------------------------------------------------------------
At the moment, this project is run in the spare time of a single person
(`Wenzel Jakob <http://rgl.epfl.ch/people/wjakob>`_) with very limited resources for
issue tracker tickets. Thus, before submitting a question or bug report, please take a
moment of your time and ensure that your issue isn't already discussed in the project
documentation elsewhere on this site.
Feature requests are generally closed unless they come with a pull request
that implements the desired functionality.
Assuming that you have identified a previously unknown problem or an important question,
it's essential that you submit a self-contained and minimal piece of code that
reproduces the problem. In other words: no external dependencies, isolate the
function(s) that cause breakage, submit matched and complete C++ or Python snippets
(depending on how you are using NanoGUI) that can be easily compiled and run on my end.
Pull requests
----------------------------------------------------------------------------------------
Contributions are submitted, reviewed, and accepted using Github pull requests. Please
refer to `this article <https://help.github.com/articles/using-pull-requests>`_ for
details and adhere to the following rules to make the process as smooth as possible:
- Make a new branch for every feature you're working on.
- Make small and clean pull requests that are easy to review but make sure they do add
value by themselves.
- Make sure you have tested any new functionality (e.g. if you made a new Widget).
- This project has a strong focus on providing general solutions using a minimal amount
of code, thus small pull requests are greatly preferred.
- Read the remainder of this document, adhering to the bindings and documentation
requirements.
- If making a purely documentation PR, please prefix the commit with ``[docs]``
- E.g. ``[docs] Adding documentation for class X.``
Specific activities for contributions
----------------------------------------------------------------------------------------
For a list of specific parts of nanogui which would benefit from outside contributions,
refer to the bottom part of `this page <https://github.com/wjakob/nanogui/blob/master/docs/contributing.rst>`_.

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Copyright (c) 2017 Wenzel Jakob <wenzel.jakob@epfl.ch>, All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
You are under no obligation whatsoever to provide any bug fixes, patches, or
upgrades to the features, functionality or performance of the source code
("Enhancements") to anyone; however, if you choose to make your Enhancements
available either publicly, or directly to the author of this software, without
imposing a separate written license agreement for such Enhancements, then you
hereby grant the following license: a non-exclusive, royalty-free perpetual
license to install, use, modify, prepare derivative works, incorporate into
other computer software, distribute, and sublicense such enhancements or
derivative works thereof, in binary and source code form.

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include README.md LICENSE.txt
global-include CMakeLists.txt *.cmake
recursive-include src *.cpp
recursive-include include *.h
recursive-include python *.cpp *.h
recursive-include resources *.ttf
recursive-include ext *.h *.c *.cpp *.pc.in *.h.in *.cmake.in

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NanoGUI
========================================================================================
|docs| |travis| |appveyor|
.. |docs| image:: https://readthedocs.org/projects/nanogui/badge/?version=latest
:target: http://nanogui.readthedocs.org/en/latest/?badge=latest
:alt: Docs
.. |travis| image:: https://travis-ci.org/wjakob/nanogui.svg?branch=master
:target: https://travis-ci.org/wjakob/nanogui
:alt: Travis Build Status
.. |appveyor| image:: https://ci.appveyor.com/api/projects/status/m8h3uyvdb4ej2i02/branch/master?svg=true
:target: https://ci.appveyor.com/project/wjakob/nanogui/branch/master
:alt: Appveyor Build Status
.. begin_brief_description
NanoGUI is a minimalistic cross-platform widget library for OpenGL 3+, GLES
2/3, and Metal. It supports automatic layout generation, stateful C++ lambdas
callbacks, a variety of useful widget types and Retina-capable rendering on
Apple devices thanks to NanoVG_ by Mikko Mononen. Python bindings of all
functionality are provided using pybind11_.
**Note**: This repository contains an improved port of the original NanoGUI_.
The most visible change to developers is that it no longer relies on Eigen or
Enoki and ships with its own (absolutely minimal) vector library. Additionally,
the the repository here incorporates the following changes:
1. A different set of naming conventions is used for function and variable
names that feels more natural in a mixed C++ & Python environment.
(specifically, ``underscore_case`` for methods and variables rather than
``camelCase``).
2. GUI Rendering now provides backends for OpenGL 3+, GLES 2/3, and Metal. GLES
2 support allows NanoGUI to run on ARM devices including the Raspberry Pi
and in browsers via WebGL. The Metal backend supports modern Macs, iPhones,
etc.
NanoGUI includes generic wrappers around shaders and textures that work for
all of these frameworks.
3. The event loop is much more conservative by default and only issues redraw
calls when explicitly requested by an event callback.
4. Python integration: the library comes with a ``pip``-compatible ``setup.py``
installation script.
5. WebAssembly code generation works out of the box (requires Emscripten),
enabling powerful UI development for the web. See Tekari_ for an example of
such an application.
6. Significantly revamped tab widget (supports right-click context menus,
draggable, and closeable tabs) and image view widget.
7. The Entypo_ icon font has been replaced by FontAwesome_ (v5.10.1).
.. _NanoVG: https://github.com/memononen/NanoVG
.. _pybind11: https://github.com/wjakob/pybind11
.. _NanoGUI: https://github.com/wjakob/nanogui
.. _Tekari: https://rgl.epfl.ch/tekari?url=%2F%2Frgl.s3.eu-central-1.amazonaws.com%2Fmedia%2Fuploads%2Fwjakob%2F2018%2F08%2F27%2Firidescent-paper.txt&log=1
.. _Entypo: http://www.entypo.com
.. _FontAwesome: https://github.com/FortAwesome/Font-Awesome
.. end_brief_description
- `Documentation <https://nanogui.readthedocs.io>`_
.. contents:: Contents
:local:
:backlinks: none
Example screenshot
----------------------------------------------------------------------------------------
.. image:: https://github.com/wjakob/nanogui/raw/master/resources/screenshot.png
:alt: Screenshot of Example 1.
:align: center
Description
----------------------------------------------------------------------------------------
.. begin_long_description
NanoGUI builds on GLFW_ for cross-platform context creation and event handling,
GLAD_ to access OpenGL functionality on Windows, and NanoVG_/MetalNanoVG_ to
draw 2D primitives.
Note that the dependency library NanoVG already includes some basic example code to draw
good-looking static widgets; what NanoGUI does is to flesh it out into a complete GUI
toolkit with event handling, layout generation, etc.
NanoGUI currently works on Mac OS X (Clang) Linux (GCC or Clang) and Windows (Visual
Studio ≥ 2017); it requires a recent C++17 capable compiler. All dependencies are
jointly built using a CMake-based build system.
.. _GLFW: http://www.glfw.org/
.. _GLAD: https://github.com/Dav1dde/glad
.. _MetalNanoVG: https://github.com/ollix/MetalNanoVG
.. end_long_description
Creating widgets
----------------------------------------------------------------------------------------
NanoGUI makes it easy to instantiate widgets, set layout constraints, and
register event callbacks using high-level C++17 code. For instance, the
following two lines from the included example application add a new button to
an existing window `window` and register an event callback.
.. code-block:: cpp
Button *b = new Button(window, "Plain button");
b->set_callback([] { cout << "pushed!" << endl; });
The following lines from the example application create the coupled
slider and text box on the bottom of the second window (see the screenshot).
.. code-block:: cpp
/* Create an empty panel with a horizontal layout */
Widget *panel = new Widget(window);
panel->set_layout(new BoxLayout(BoxLayout::Horizontal, BoxLayout::Middle, 0, 20));
/* Add a slider and set defaults */
Slider *slider = new Slider(panel);
slider->set_value(0.5f);
slider->set_fixed_width(80);
/* Add a textbox and set defaults */
TextBox *tb = new TextBox(panel);
tb->set_fixed_size(Vector2i(60, 25));
tb->set_value("50");
tb->set_units("%");
/* Propagate slider changes to the text box */
slider->set_callback([tb](float value) {
tb->set_value(std::to_string((int) (value * 100)));
});
The Python version of this same piece of code looks like this:
.. code-block:: py
# Create an empty panel with a horizontal layout
panel = Widget(window)
panel.set_layout(BoxLayout(BoxLayout.Horizontal, BoxLayout.Middle, 0, 20))
# Add a slider and set defaults
slider = Slider(panel)
slider.set_value(0.5)
slider.set_fixed_width(80)
# Add a textbox and set defaults
tb = TextBox(panel)
tb.set_fixed_size(Vector2i(60, 25))
tb.set_value("50")
tb.set_units("%")
# Propagate slider changes to the text box
def cb(value):
tb.set_value("%i" % int(value * 100))
slider.set_callback(cb)
"Simple mode"
----------------------------------------------------------------------------------------
Christian Schüller contributed a convenience class that makes it possible to
create AntTweakBar-style variable manipulators using just a few lines of code.
For instance, the source code below was used to create the following example
application.
.. image:: https://github.com/wjakob/nanogui/raw/master/resources/screenshot2.png
:alt: Screenshot
:align: center
.. code-block:: cpp
/// dvar, bar, strvar, etc. are double/bool/string/.. variables
FormHelper *gui = new FormHelper(screen);
ref<Window> window = gui->add_window(Vector2i(10, 10), "Form helper example");
gui->add_group("Basic types");
gui->add_variable("bool", bvar);
gui->add_variable("string", strvar);
gui->add_group("Validating fields");
gui->add_variable("int", ivar);
gui->add_variable("float", fvar);
gui->add_variable("double", dvar);
gui->add_group("Complex types");
gui->add_variable("Enumeration", enumval, enabled)
->setItems({"Item 1", "Item 2", "Item 3"});
gui->add_variable("Color", colval);
gui->add_group("Other widgets");
gui->add_button("A button", [](){ std::cout << "Button pressed." << std::endl; });
screen->set_visible(true);
screen->perform_layout();
window->center();
Compiling
----------------------------------------------------------------------------------------
Clone the repository and all dependencies (with ``git clone --recursive``),
run CMake to generate Makefiles or CMake/Visual Studio project files, and
the rest should just work automatically.
On Debian/Ubuntu, make sure that you have installed the following packages
.. code-block:: bash
$ apt-get install cmake xorg-dev libglu1-mesa-dev
To also get the Python bindings, you'll need to run
.. code-block:: bash
$ apt-get install python-dev
On RedHat/Fedora, make sure that you have installed the following packages
.. code-block:: bash
$ sudo dnf install cmake mesa-libGLU-devel libXi-devel libXcursor-devel libXinerama-devel libXrandr-devel xorg-x11-server-devel
To also get the Python bindings, you'll need to run
.. code-block:: bash
$ sudo dnf install python3-devel
License
----------------------------------------------------------------------------------------
.. begin_license
NanoGUI is provided under a BSD-style license that can be found in the LICENSE_
file. By using, distributing, or contributing to this project, you agree to the
terms and conditions of this license.
.. _LICENSE: https://github.com/wjakob/nanogui/blob/master/LICENSE.txt
Note that NanoGUI ships with several fonts that use different (though similarly
unencumbered) licenses, in particular `Roboto
<https://github.com/google/roboto/>`_, `Inconsolata
<https://github.com/googlefonts/Inconsolata>`_, and the free version of the
`Font Awesome icon font <https://github.com/FortAwesome/Font-Awesome>`_
(v5.10.1). The latter two are distributed under the `SIL Open Font License
Version 1.1 <https://opensource.org/licenses/OFL-1.1>`_, while Roboto is
distributed under the `Apache 2.0
<https://opensource.org/licenses/Apache-2.0>`_ license.
.. end_license

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/*
Icon Font: entypo
*/
@font-face {
font-family: "entypo";
src: url("./entypo.eot");
src: url("./entypo.eot?#iefix") format("embedded-opentype"),
url("./entypo.woff2") format("woff2"),
url("./entypo.woff") format("woff"),
url("./entypo.ttf") format("truetype"),
url("./entypo.svg#entypo") format("svg");
font-weight: normal;
font-style: normal;
}
@media screen and (-webkit-min-device-pixel-ratio:0) {
@font-face {
font-family: "entypo";
src: url("./entypo.svg#entypo") format("svg");
}
}
[data-icon]:before { content: attr(data-icon); }
[data-icon]:before,
.entypo-icon-500px:before,
.entypo-icon-500px-with-circle:before,
.entypo-icon-add-to-list:before,
.entypo-icon-add-user:before,
.entypo-icon-address:before,
.entypo-icon-adjust:before,
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display: inline-block;
font-family: "entypo";
font-style: normal;
font-weight: normal;
font-variant: normal;
line-height: 1;
text-decoration: inherit;
text-rendering: optimizeLegibility;
text-transform: none;
-moz-osx-font-smoothing: grayscale;
-webkit-font-smoothing: antialiased;
font-smoothing: antialiased;
}
.entypo-icon-500px:before { content: "\f100"; }
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.entypo-icon-linkedin:before { content: "\f1e3"; }
.entypo-icon-linkedin-with-circle:before { content: "\f1e4"; }
.entypo-icon-list:before { content: "\f1e5"; }
.entypo-icon-location:before { content: "\f1e6"; }
.entypo-icon-location-pin:before { content: "\f1e7"; }
.entypo-icon-lock:before { content: "\f1e8"; }
.entypo-icon-lock-open:before { content: "\f1e9"; }
.entypo-icon-log-out:before { content: "\f1ea"; }
.entypo-icon-login:before { content: "\f1eb"; }
.entypo-icon-loop:before { content: "\f1ec"; }
.entypo-icon-magnet:before { content: "\f1ed"; }
.entypo-icon-magnifying-glass:before { content: "\f1ee"; }
.entypo-icon-mail:before { content: "\f1ef"; }
.entypo-icon-mail-with-circle:before { content: "\f1f0"; }
.entypo-icon-man:before { content: "\f1f1"; }
.entypo-icon-map:before { content: "\f1f2"; }
.entypo-icon-mask:before { content: "\f1f3"; }
.entypo-icon-medal:before { content: "\f1f4"; }
.entypo-icon-medium:before { content: "\f1f5"; }
.entypo-icon-medium-with-circle:before { content: "\f1f6"; }
.entypo-icon-megaphone:before { content: "\f1f7"; }
.entypo-icon-menu:before { content: "\f1f8"; }
.entypo-icon-merge:before { content: "\f1f9"; }
.entypo-icon-message:before { content: "\f1fa"; }
.entypo-icon-mic:before { content: "\f1fb"; }
.entypo-icon-minus:before { content: "\f1fc"; }
.entypo-icon-mixi:before { content: "\f1fd"; }
.entypo-icon-mobile:before { content: "\f1fe"; }
.entypo-icon-modern-mic:before { content: "\f1ff"; }
.entypo-icon-moon:before { content: "\f200"; }
.entypo-icon-mouse:before { content: "\f201"; }
.entypo-icon-mouse-pointer:before { content: "\f202"; }
.entypo-icon-music:before { content: "\f203"; }
.entypo-icon-network:before { content: "\f204"; }
.entypo-icon-new:before { content: "\f205"; }
.entypo-icon-new-message:before { content: "\f206"; }
.entypo-icon-news:before { content: "\f207"; }
.entypo-icon-newsletter:before { content: "\f208"; }
.entypo-icon-note:before { content: "\f209"; }
.entypo-icon-notification:before { content: "\f20a"; }
.entypo-icon-notifications-off:before { content: "\f20b"; }
.entypo-icon-old-mobile:before { content: "\f20c"; }
.entypo-icon-old-phone:before { content: "\f20d"; }
.entypo-icon-onedrive:before { content: "\f20e"; }
.entypo-icon-open-book:before { content: "\f20f"; }
.entypo-icon-palette:before { content: "\f210"; }
.entypo-icon-paper-plane:before { content: "\f211"; }
.entypo-icon-paypal:before { content: "\f212"; }
.entypo-icon-pencil:before { content: "\f213"; }
.entypo-icon-phone:before { content: "\f214"; }
.entypo-icon-picasa:before { content: "\f215"; }
.entypo-icon-pie-chart:before { content: "\f216"; }
.entypo-icon-pin:before { content: "\f217"; }
.entypo-icon-pinterest:before { content: "\f218"; }
.entypo-icon-pinterest-with-circle:before { content: "\f219"; }
.entypo-icon-plus:before { content: "\f21a"; }
.entypo-icon-popup:before { content: "\f21b"; }
.entypo-icon-power-plug:before { content: "\f21c"; }
.entypo-icon-price-ribbon:before { content: "\f21d"; }
.entypo-icon-price-tag:before { content: "\f21e"; }
.entypo-icon-print:before { content: "\f21f"; }
.entypo-icon-progress-empty:before { content: "\f220"; }
.entypo-icon-progress-full:before { content: "\f221"; }
.entypo-icon-progress-one:before { content: "\f222"; }
.entypo-icon-progress-two:before { content: "\f223"; }
.entypo-icon-publish:before { content: "\f224"; }
.entypo-icon-qq:before { content: "\f225"; }
.entypo-icon-qq-with-circle:before { content: "\f226"; }
.entypo-icon-quote:before { content: "\f227"; }
.entypo-icon-radio:before { content: "\f228"; }
.entypo-icon-raft:before { content: "\f229"; }
.entypo-icon-raft-with-circle:before { content: "\f22a"; }
.entypo-icon-rainbow:before { content: "\f22b"; }
.entypo-icon-rdio:before { content: "\f22c"; }
.entypo-icon-rdio-with-circle:before { content: "\f22d"; }
.entypo-icon-remove-user:before { content: "\f22e"; }
.entypo-icon-renren:before { content: "\f22f"; }
.entypo-icon-reply:before { content: "\f230"; }
.entypo-icon-reply-all:before { content: "\f231"; }
.entypo-icon-resize-100-percent:before { content: "\f232"; }
.entypo-icon-resize-full-screen:before { content: "\f233"; }
.entypo-icon-retweet:before { content: "\f234"; }
.entypo-icon-rocket:before { content: "\f235"; }
.entypo-icon-round-brush:before { content: "\f236"; }
.entypo-icon-rss:before { content: "\f237"; }
.entypo-icon-ruler:before { content: "\f238"; }
.entypo-icon-save:before { content: "\f239"; }
.entypo-icon-scissors:before { content: "\f23a"; }
.entypo-icon-scribd:before { content: "\f23b"; }
.entypo-icon-select-arrows:before { content: "\f23c"; }
.entypo-icon-share:before { content: "\f23d"; }
.entypo-icon-share-alternative:before { content: "\f23e"; }
.entypo-icon-shareable:before { content: "\f23f"; }
.entypo-icon-shield:before { content: "\f240"; }
.entypo-icon-shop:before { content: "\f241"; }
.entypo-icon-shopping-bag:before { content: "\f242"; }
.entypo-icon-shopping-basket:before { content: "\f243"; }
.entypo-icon-shopping-cart:before { content: "\f244"; }
.entypo-icon-shuffle:before { content: "\f245"; }
.entypo-icon-signal:before { content: "\f246"; }
.entypo-icon-sina-weibo:before { content: "\f247"; }
.entypo-icon-skype:before { content: "\f248"; }
.entypo-icon-skype-with-circle:before { content: "\f249"; }
.entypo-icon-slideshare:before { content: "\f24a"; }
.entypo-icon-smashing:before { content: "\f24b"; }
.entypo-icon-sound:before { content: "\f24c"; }
.entypo-icon-sound-mix:before { content: "\f24d"; }
.entypo-icon-sound-mute:before { content: "\f24e"; }
.entypo-icon-soundcloud:before { content: "\f24f"; }
.entypo-icon-sports-club:before { content: "\f250"; }
.entypo-icon-spotify:before { content: "\f251"; }
.entypo-icon-spotify-with-circle:before { content: "\f252"; }
.entypo-icon-spreadsheet:before { content: "\f253"; }
.entypo-icon-squared-cross:before { content: "\f254"; }
.entypo-icon-squared-minus:before { content: "\f255"; }
.entypo-icon-squared-plus:before { content: "\f256"; }
.entypo-icon-star:before { content: "\f257"; }
.entypo-icon-star-outlined:before { content: "\f258"; }
.entypo-icon-stopwatch:before { content: "\f259"; }
.entypo-icon-stumbleupon:before { content: "\f25a"; }
.entypo-icon-stumbleupon-with-circle:before { content: "\f25b"; }
.entypo-icon-suitcase:before { content: "\f25c"; }
.entypo-icon-swap:before { content: "\f25d"; }
.entypo-icon-swarm:before { content: "\f25e"; }
.entypo-icon-sweden:before { content: "\f25f"; }
.entypo-icon-switch:before { content: "\f260"; }
.entypo-icon-tablet:before { content: "\f261"; }
.entypo-icon-tablet-mobile-combo:before { content: "\f262"; }
.entypo-icon-tag:before { content: "\f263"; }
.entypo-icon-text:before { content: "\f264"; }
.entypo-icon-text-document:before { content: "\f265"; }
.entypo-icon-text-document-inverted:before { content: "\f266"; }
.entypo-icon-thermometer:before { content: "\f267"; }
.entypo-icon-thumbs-down:before { content: "\f268"; }
.entypo-icon-thumbs-up:before { content: "\f269"; }
.entypo-icon-thunder-cloud:before { content: "\f26a"; }
.entypo-icon-ticket:before { content: "\f26b"; }
.entypo-icon-time-slot:before { content: "\f26c"; }
.entypo-icon-tools:before { content: "\f26d"; }
.entypo-icon-traffic-cone:before { content: "\f26e"; }
.entypo-icon-trash:before { content: "\f26f"; }
.entypo-icon-tree:before { content: "\f270"; }
.entypo-icon-triangle-down:before { content: "\f271"; }
.entypo-icon-triangle-left:before { content: "\f272"; }
.entypo-icon-triangle-right:before { content: "\f273"; }
.entypo-icon-triangle-up:before { content: "\f274"; }
.entypo-icon-tripadvisor:before { content: "\f275"; }
.entypo-icon-trophy:before { content: "\f276"; }
.entypo-icon-tumblr:before { content: "\f277"; }
.entypo-icon-tumblr-with-circle:before { content: "\f278"; }
.entypo-icon-tv:before { content: "\f279"; }
.entypo-icon-twitter:before { content: "\f27a"; }
.entypo-icon-twitter-with-circle:before { content: "\f27b"; }
.entypo-icon-typing:before { content: "\f27c"; }
.entypo-icon-uninstall:before { content: "\f27d"; }
.entypo-icon-unread:before { content: "\f27e"; }
.entypo-icon-untag:before { content: "\f27f"; }
.entypo-icon-upload:before { content: "\f280"; }
.entypo-icon-upload-to-cloud:before { content: "\f281"; }
.entypo-icon-user:before { content: "\f282"; }
.entypo-icon-users:before { content: "\f283"; }
.entypo-icon-v-card:before { content: "\f284"; }
.entypo-icon-video:before { content: "\f285"; }
.entypo-icon-video-camera:before { content: "\f286"; }
.entypo-icon-vimeo:before { content: "\f287"; }
.entypo-icon-vimeo-with-circle:before { content: "\f288"; }
.entypo-icon-vine:before { content: "\f289"; }
.entypo-icon-vine-with-circle:before { content: "\f28a"; }
.entypo-icon-vinyl:before { content: "\f28b"; }
.entypo-icon-vk:before { content: "\f28c"; }
.entypo-icon-vk-alternitive:before { content: "\f28d"; }
.entypo-icon-vk-with-circle:before { content: "\f28e"; }
.entypo-icon-voicemail:before { content: "\f28f"; }
.entypo-icon-wallet:before { content: "\f290"; }
.entypo-icon-warning:before { content: "\f291"; }
.entypo-icon-water:before { content: "\f292"; }
.entypo-icon-windows-store:before { content: "\f293"; }
.entypo-icon-xing:before { content: "\f294"; }
.entypo-icon-xing-with-circle:before { content: "\f295"; }
.entypo-icon-yelp:before { content: "\f296"; }
.entypo-icon-youko:before { content: "\f297"; }
.entypo-icon-youko-with-circle:before { content: "\f298"; }
.entypo-icon-youtube:before { content: "\f299"; }
.entypo-icon-youtube-with-circle:before { content: "\f29a"; }

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Compilation
========================================================================================
NanoGUI uses a CMake build system to ensure portability. All dependencies are
cloned and compiled in one batch, which should generally reduce the amount of
configuration effort to zero. Assuming that NanoGUI was cloned into the current
working directory, the following commands need to be executed:
.. code-block:: bash
# enter the top-level NanoGUI directory
$ cd nanogui
# make a build directory and enter that
$ mkdir build
$ cd build
# generate your Makefile
$ cmake ..
# now that you have a Makefile, use that to build
$ make -j 4
For Windows, the process is nearly the same:
.. code-block:: bash
# enter the top-level NanoGUI directory
$ cd nanogui
# make a build directory and enter that
$ mkdir build
$ cd build
# Specify VS Version AND 64bit, otherwise it defaults to 32.
# The version number and year may be different for you, Win64
# can be appended to any of them. Execute `cmake -G` to get
# a listing of the available generators.
#
# 32 bit Windows builds are /not/ supported
$ cmake -G "Visual Studio 14 2015 Win64" ..
# Either open the .sln with Visual Studio, or run
$ cmake --build . --config Release
Default Configurations
----------------------------------------------------------------------------------------
By default, NanoGUI will
+---------------------------------+---------------------------+
| Impact / effect | CMake Option |
+=================================+===========================+
| Build the example programs. | ``NANOGUI_BUILD_EXAMPLE`` |
+---------------------------------+---------------------------+
| Build as a *shared* library. | ``NANOGUI_BUILD_SHARED`` |
+---------------------------------+---------------------------+
| Build the Python plugins. | ``NANOGUI_BUILD_PYTHON`` |
+---------------------------------+---------------------------+
| Use GLAD if on Windows. | ``NANOGUI_USE_GLAD`` |
+---------------------------------+---------------------------+
| Generate an ``install`` target. | ``NANOGUI_INSTALL`` |
+---------------------------------+---------------------------+
Users developing projects that reference NanoGUI as a ``git submodule`` (this
is **strongly** encouraged) can set up the parent project's CMake configuration
file as follows (this assumes that ``nanogui`` lives in the directory
``ext/nanogui`` relative to the parent project):
.. code-block:: cmake
# Disable building extras we won't need (pure C++ project)
set(NANOGUI_BUILD_EXAMPLE OFF CACHE BOOL " " FORCE)
set(NANOGUI_BUILD_PYTHON OFF CACHE BOOL " " FORCE)
set(NANOGUI_INSTALL OFF CACHE BOOL " " FORCE)
# Add the configurations from nanogui
add_subdirectory(ext/nanogui)
# For reliability of parallel build, make the NanoGUI targets dependencies
set_property(TARGET glfw glfw_objects nanogui PROPERTY FOLDER "dependencies")
Required Variables Exposed
----------------------------------------------------------------------------------------
Due to the nature of building an OpenGL application for different platforms, three
variables are populated to allow for easy incorporation with your CMake build. After
you have executed ``add_subdirectory`` as shown above, you will need to add the
following (assuming the target you are building is called ``myTarget``):
.. code-block:: cmake
# Various preprocessor definitions have been generated by NanoGUI
add_definitions(${NANOGUI_EXTRA_DEFS})
# On top of adding the path to nanogui/include, you may need extras
include_directories(${NANOGUI_EXTRA_INCS})
# Compile a target using NanoGUI
add_executable(myTarget myTarget.cpp)
# Lastly, additional libraries may have been built for you. In addition to linking
# against NanoGUI, we need to link against those as well.
target_link_libraries(myTarget nanogui ${NANOGUI_EXTRA_LIBS})
Advanced Compilation Details
----------------------------------------------------------------------------------------
NanoGUI and Python
****************************************************************************************
Although it is |year|, you may still for example wish to build the Python bindings for
Python 2.7. The variable you would set **before** ``add_subdirectory`` is
``NANOGUI_PYTHON_VERSION``. For example,
.. code-block:: cmake
set(NANOGUI_PYTHON_VERSION "2.7")
# can also use minor versions
set(NANOGUI_PYTHON_VERSION "3.6.2")
NanoGUI and Eigen
****************************************************************************************
NanoGUI uses Eigen_ internally for various vector types. Eigen is an advanced header
only template library, which NanoGUI vendors in the ``ext`` folder. It is important to
understand the implication of Eigen being header only: **only one version of Eigen can
be included**.
There is a CMake bypass variable available in NanoGUI: ``NANOGUI_EIGEN_INCLUDE_DIR``.
You would set this variable **before** ``add_subdirectory``. Since you will want to
provide the same kind of bypass for users of your library, the following snippet is a
good starting point. For this example code:
1. The parent CMake project is called ``myproj``. A good CMake practice to adopt is to
prefix your project's name to any variables you intend to expose. This allows parent
projects to know where the variable came from, and avoids name collisions.
2. First ``find_package`` is used to try and find Eigen. The philosophy is that the
user is responsible for ensuring that the version of Eigen they want to use will be
found.
3. Since NanoGUI needs to remain self-contained, the side-effect is that even if the
user does *not* have Eigen installed, you can fallback and use the one vendored with
NanoGUI.
4. The following directory structure:
.. code-block:: none
myproj/
CMakeLists.txt <- Where this example code is
ext/
nanogui/
CMakeLists.txt <- NanoGUI's build system
ext/
eigen/ <- NanoGUI's internal copy of Eigen
.. code-block:: cmake
# `if NOT` is what enables the same bypass for your project
if(NOT MYPROJ_EIGEN3_INCLUDE_DIR)
# Grab or find the Eigen3 include directory.
find_package(Eigen3 QUIET)
if(EIGEN3_INCLUDE_DIR)
set(MYPROJ_EIGEN3_INCLUDE_DIR ${EIGEN3_INCLUDE_DIR})
else()
# use the internal NanoGUI copy of Eigen
set(MYPROJ_EIGEN3_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/ext/nanogui/ext/eigen)
endif()
endif()
message(STATUS "Using Eigen3 from directory: ${MYPROJ_EIGEN3_INCLUDE_DIR}")
set(NANOGUI_EIGEN_INCLUDE_DIR ${EIGEN3_INCLUDE_DIR} CACHE BOOL " " FORCE)
# set any other NanoGUI specific variables you need (shown in above sections)
add_subdirectory(ext/nanogui)
# include it for your project as well (or append to a list
# and include that list later, depending on your setup)
include_directories(${MYPROJ_EIGEN3_INCLUDE_DIR})
.. _Eigen: https://eigen.tuxfamily.org/dox/
NanoGUI, GLFW, and Other Projects
****************************************************************************************
Suppose you want to use NanoGUI as your GUI toolkit, but you also have another library
you want to use that depends on ``glfw``. Call the second library Foo. Generally
speaking, it is unlikely that library Foo will provide you with mechanisms to explicitly
specify where ``glfw`` comes from. You could try to work on a patch with the developers
of library Foo to allow this to be overridden, but you may need to maintain your own
fork of library Foo. There is just as much justification to allow the bypass as there
is to not want it in a build system.
Since NanoGUI merges the ``glfw`` objects into the library being built, you can actually
just specify ``nanogui`` as the ``glfw`` dependency directly. So lets suppose that
library Foo was looking for ``glfw`` like this:
.. code-block:: cmake
find_package(GLFW3)
if(GLFW3_FOUND)
include_directories(${GLFW3_INCLUDE_DIRS})
target_link_libraries(foo ${GLFW3_LIBRARIES})
endif()
You can cheat around this pretty easily. For the modification to library Foo's build
system, all we do is wrap ``find_package``:
.. code-block:: diff
+ if(NOT GLFW3_FOUND)
find_package(GLFW3)
+ endif()
if(GLFW3_FOUND)
include_directories(${GLFW3_INCLUDE_DIRS})
target_link_libraries(foo ${GLFW3_LIBRARIES})
endif()
Now that ``find_package`` will only execute if ``NOT GLFW3_FOUND``, in your build system
you make sure to set all three ``glfw`` variables (found, include, and libraries). It
might look something like this:
.. code-block:: cmake
# ... any other nanogui configs ...
# same directory structure as Eigen example
add_subdirectory(ext/nanogui)
# nanogui needs to be added first so the 'nanogui' target is defined
# and can be used in the generator expression for the libraries
set(GLFW3_FOUND ON)
set(GLFW3_INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/ext/nanogui/ext/glfw/include)
set(GLFW3_LIBRARIES $<TARGET_FILE:nanogui>)
add_subdirectory(ext/foo)
# IMPORTANT! You need to force NanoGUI to build first
# Assuming their library target is called 'foo'
add_dependencies(foo nanogui)
Depending on what you need to do, the above may not be sufficient. But it is at least
a starting point to being able to "share" NanoGUI as the vendor of ``glfw``.
.. _nanogui_including_custom_fonts:
Including Custom Fonts
****************************************************************************************
NanoGUI uses the Roboto_ font for text, and Entypo_ font for icons. If you wish to add
your own custom font, all you need is a True Type file (a ``.ttf`` extension). NanoGUI
will glob all fonts found in ``resources`` by expanding ``resources/*.ttf``. So if you
had the directory structure
.. code-block:: none
myproject/
CMakeLists.txt <- where this code is
fonts/
superfont.ttf
ext/
nanogui/
resources/
You simply need to copy the ``superfont.ttf`` to NanoGUI's resources directory:
.. code-block:: cmake
file(
COPY ${CMAKE_CURRENT_SOURCE_DIR}/fonts/superfont.ttf
DESTINATION ${CMAKE_CURRENT_SOURCE_DIR}/ext/nanogui/resources/superfont.ttf
)
When you build the code, there should be a file ``nanogui_resources.h`` generated. If
everything worked, your new font should have been included.
.. note::
Since NanoGUI can support images as icons, you will want to make sure that the
*codepoint* for any *icon* fonts you create is greater than ``1024``. See
:func:`nanogui::nvgIsImageIcon`.
.. tip::
Some widgets allow you to set fonts directly, but if you want to apply the font
globally, you should create a sub-class of :class:`nanogui::Theme` and explicitly
call :func:`nanogui::Widget::setTheme` for each widget you create.
.. _Roboto: https://fonts.google.com/specimen/Roboto
.. _Entypo: http://www.entypo.com
.. _utf8: http://www.utf8-chartable.de/
.. _nanogui_compiling_the_docs:
Compiling the Documentation
----------------------------------------------------------------------------------------
The documentation system relies on 'Doxygen', 'Sphinx', 'Breathe', and
'Exhale'. It uses the 'Read the Docs' theme for the layout of the generated
html. So you will need to first
1. Install Doxygen for your operating system. On Unix based systems, this
should be available through your package manager (apt-get, brew, dnf, etc).
2. Install Sphinx, Breathe, Exhale, and the theme:
.. code-block:: py
pip3 install -r <path/to/nanogui>/docs/requirements.txt
Now that you have the relevant tools, you can build the documentation with
.. code-block:: bash
# Enter the documentation directory
$ cd <path/to/nanogui>/docs
# Build the documentation
$ make html
The output will be generated in ``_build``, the root html document is located
at ``_build/html/index.html``.
.. note::
When building the documentation locally, there can be subtle differences in
the rendered pages than what is hosted online. You should largely be able
to ignore this.

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# -*- coding: utf-8 -*-
#
# NanoGUI documentation build configuration file, created by
# sphinx-quickstart on Mon Aug 22 20:05:54 2016.
#
# This file is execfile()d with the current directory set to its
# containing dir.
#
# Note that not all possible configuration values are present in this
# autogenerated file.
#
# All configuration values have a default; values that are commented out
# serve to show the default.
import sys
import os
import shlex
import textwrap
# If extensions (or modules to document with autodoc) are in another directory,
# add these directories to sys.path here. If the directory is relative to the
# documentation root, use os.path.abspath to make it absolute, like shown here.
# sys.path.insert(0, os.path.abspath('.'))
# -- General configuration ------------------------------------------------
# If your documentation needs a minimal Sphinx version, state it here.
needs_sphinx = '1.0'
# Add any Sphinx extension module names here, as strings. They can be
# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
# ones.
extensions = [
'sphinx.ext.ifconfig',
'breathe',
'exhale'
]
# Setup the `breathe` extension
breathe_projects = { "NanoGUI": "./doxyoutput/xml" }
breathe_default_project = "NanoGUI"
# Setup the `exhale` extension
exhale_args = {
############################################################################
# These arguments are required. #
############################################################################
"containmentFolder": "./api",
"rootFileName": "library_root.rst",
"rootFileTitle": "Library API",
"doxygenStripFromPath": "../include",
############################################################################
# Suggested optional arguments. #
############################################################################
"createTreeView": True,
"exhaleExecutesDoxygen": True,
"exhaleDoxygenStdin": textwrap.dedent('''
# Tell Doxygen where the source code is (yours may be different).
INPUT = ../include
# Doxygen chokes on `NAMESPACE_BEGIN`, predfine all of these
PREDEFINED += NAMESPACE_BEGIN(nanogui)="namespace nanogui {"
PREDEFINED += NAMESPACE_END(nanogui)="}"
PREDEFINED += NAMESPACE_BEGIN(detail)="namespace detail {"
PREDEFINED += NAMESPACE_END(detail)="}"
PREDEFINED += DOXYGEN_SHOULD_SKIP_THIS
PREDEFINED += DOXYGEN_DOCUMENTATION_BUILD
PREDEFINED += NANOGUI_EXPORT
'''),
############################################################################
# HTML Theme specific configurations. #
############################################################################
# Fix broken Sphinx RTD Theme 'Edit on GitHub' links
# Search for 'Edit on GitHub' on the FAQ:
# http://exhale.readthedocs.io/en/latest/faq.html
"pageLevelConfigMeta": ":github_url: https://github.com/wjakob/nanogui",
############################################################################
# Main library page layout example configuration. #
############################################################################
"afterTitleDescription": textwrap.dedent(u'''
Welcome to the developer reference to NanoGUI. The documentation is
actively being developed / updated. If you would like to help document
any part of the project you may be familiar with, please refer to the
:ref:`developer_contribution` page.
.. note::
Presented below is only the C++ API. If you are using the Python API,
the contents below are still applicable for understanding what
methods are available. While the documentation for the C++ API is
useful as a reference for understanding what a given class does, the
Python API does differ. Please refer to the more concise
:ref:`nanogui_example_2` for comparing the differences between the
C++ and Python interfaces.
'''),
############################################################################
# Individual page layout example configuration. #
############################################################################
# Example of adding contents directives on custom kinds with custom title
"contentsTitle": "Page Contents",
"kindsWithContentsDirectives": ["class", "file", "namespace", "struct"],
############################################################################
# useful to see ;)
# "verboseBuild": True
}
# Tell sphinx what the primary language being documented is.
primary_domain = 'cpp'
# Tell sphinx what the pygments highlight language should be.
highlight_language = 'cpp'
# Add any paths that contain templates here, relative to this directory.
# templates_path = ['_templates']
# The suffix(es) of source filenames.
# You can specify multiple suffix as a list of string:
# source_suffix = ['.rst', '.md']
source_suffix = '.rst'
# The encoding of source files.
#source_encoding = 'utf-8-sig'
# The master toctree document.
master_doc = 'index'
# General information about the project.
project = u'NanoGUI'
copyright = u'2017, Wenzel Jakob'
author = u'Wenzel Jakob'
# The version info for the project you're documenting, acts as replacement for
# |version| and |release|, also used in various other places throughout the
# built documents.
#
# The short X.Y version.
version = '0.1.0'
# The full version, including alpha/beta/rc tags.
release = '0.1.0'
# The language for content autogenerated by Sphinx. Refer to documentation
# for a list of supported languages.
#
# This is also used if you do content translation via gettext catalogs.
# Usually you set "language" from the command line for these cases.
language = None
# There are two options for replacing |today|: either, you set today to some
# non-false value, then it is used:
#today = ''
# Else, today_fmt is used as the format for a strftime call.
#today_fmt = '%B %d, %Y'
# List of patterns, relative to source directory, that match files and
# directories to ignore when looking for source files.
exclude_patterns = ['_build']
# The reST default role (used for this markup: `text`) to use for all
# documents.
#default_role = None
# If true, '()' will be appended to :func: etc. cross-reference text.
#add_function_parentheses = True
# If true, the current module name will be prepended to all description
# unit titles (such as .. function::).
#add_module_names = True
# If true, sectionauthor and moduleauthor directives will be shown in the
# output. They are ignored by default.
#show_authors = False
# The name of the Pygments (syntax highlighting) style to use.
pygments_style = 'sphinx'
# A list of ignored prefixes for module index sorting.
#modindex_common_prefix = []
# If true, keep warnings as "system message" paragraphs in the built documents.
#keep_warnings = False
# If true, `todo` and `todoList` produce output, else they produce nothing.
todo_include_todos = False
# -- Options for HTML output ----------------------------------------------
# The theme to use for HTML and HTML Help pages. See the documentation for
# a list of builtin themes.
html_theme = 'sphinx_rtd_theme'
# Theme options are theme-specific and customize the look and feel of a theme
# further. For a list of options available for each theme, see the
# documentation.
#html_theme_options = {}
# Add any paths that contain custom themes here, relative to this directory.
#html_theme_path = []
# The name for this set of Sphinx documents. If None, it defaults to
# "<project> v<release> documentation".
#html_title = None
# A shorter title for the navigation bar. Default is the same as html_title.
#html_short_title = None
# The name of an image file (relative to this directory) to place at the top
# of the sidebar.
#html_logo = None
# The name of an image file (within the static path) to use as favicon of the
# docs. This file should be a Windows icon file (.ico) being 16x16 or 32x32
# pixels large.
html_favicon = '../resources/icons/icon6.ico'
# Add any paths that contain custom static files (such as style sheets) here,
# relative to this directory. They are copied after the builtin static files,
# so a file named "default.css" will overwrite the builtin "default.css".
html_static_path = ['_static']
# Add any extra paths that contain custom files (such as robots.txt or
# .htaccess) here, relative to this directory. These files are copied
# directly to the root of the documentation.
#html_extra_path = []
# If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
# using the given strftime format.
#html_last_updated_fmt = '%b %d, %Y'
# If true, SmartyPants will be used to convert quotes and dashes to
# typographically correct entities.
#html_use_smartypants = True
# Custom sidebar templates, maps document names to template names.
#html_sidebars = {}
# Additional templates that should be rendered to pages, maps page names to
# template names.
#html_additional_pages = {}
# If false, no module index is generated.
#html_domain_indices = True
# If false, no index is generated.
#html_use_index = True
# If true, the index is split into individual pages for each letter.
#html_split_index = False
# If true, links to the reST sources are added to the pages.
#html_show_sourcelink = True
# If true, "Created using Sphinx" is shown in the HTML footer. Default is True.
#html_show_sphinx = True
# If true, "(C) Copyright ..." is shown in the HTML footer. Default is True.
#html_show_copyright = True
# If true, an OpenSearch description file will be output, and all pages will
# contain a <link> tag referring to it. The value of this option must be the
# base URL from which the finished HTML is served.
#html_use_opensearch = ''
# This is the file name suffix for HTML files (e.g. ".xhtml").
#html_file_suffix = None
# Language to be used for generating the HTML full-text search index.
# Sphinx supports the following languages:
# 'da', 'de', 'en', 'es', 'fi', 'fr', 'hu', 'it', 'ja'
# 'nl', 'no', 'pt', 'ro', 'ru', 'sv', 'tr'
#html_search_language = 'en'
# A dictionary with options for the search language support, empty by default.
# Now only 'ja' uses this config value
#html_search_options = {'type': 'default'}
# The name of a javascript file (relative to the configuration directory) that
# implements a search results scorer. If empty, the default will be used.
#html_search_scorer = 'scorer.js'
# Output file base name for HTML help builder.
htmlhelp_basename = 'NanoGUIdoc'
# -- Options for LaTeX output ---------------------------------------------
latex_elements = {
# The paper size ('letterpaper' or 'a4paper').
#'papersize': 'letterpaper',
# The font size ('10pt', '11pt' or '12pt').
#'pointsize': '10pt',
# Additional stuff for the LaTeX preamble.
#'preamble': '',
# Latex figure (float) alignment
#'figure_align': 'htbp',
}
# Grouping the document tree into LaTeX files. List of tuples
# (source start file, target name, title,
# author, documentclass [howto, manual, or own class]).
latex_documents = [
(master_doc, 'NanoGUI.tex', u'NanoGUI Documentation',
u'Wenzel Jakob', 'manual'),
]
# The name of an image file (relative to this directory) to place at the top of
# the title page.
#latex_logo = None
# For "manual" documents, if this is true, then toplevel headings are parts,
# not chapters.
#latex_use_parts = False
# If true, show page references after internal links.
#latex_show_pagerefs = False
# If true, show URL addresses after external links.
#latex_show_urls = False
# Documents to append as an appendix to all manuals.
#latex_appendices = []
# If false, no module index is generated.
#latex_domain_indices = True
# -- Options for manual page output ---------------------------------------
# One entry per manual page. List of tuples
# (source start file, name, description, authors, manual section).
man_pages = [
(master_doc, 'nanogui', u'NanoGUI Documentation',
[author], 1)
]
# If true, show URL addresses after external links.
#man_show_urls = False
# -- Options for Texinfo output -------------------------------------------
# Grouping the document tree into Texinfo files. List of tuples
# (source start file, target name, title, author,
# dir menu entry, description, category)
texinfo_documents = [
(master_doc, 'NanoGUI', u'NanoGUI Documentation',
author, 'NanoGUI', 'One line description of project.',
'Miscellaneous'),
]
# Documents to append as an appendix to all manuals.
#texinfo_appendices = []
# If false, no module index is generated.
#texinfo_domain_indices = True
# How to display URL addresses: 'footnote', 'no', or 'inline'.
#texinfo_show_urls = 'footnote'
# If true, do not generate a @detailmenu in the "Top" node's menu.
#texinfo_no_detailmenu = False
import datetime
rst_epilog = textwrap.dedent('''
.. |year| replace:: {year}
'''.format(
year=datetime.datetime.now().year
))
# auto-magically called by sphinx-build
def setup(app):
# this looks in html_static_path (_static directory as set above)
app.add_stylesheet("entypo.css")

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.. _developer_contribution:
Contributing
========================================================================================
Thank you for your interest in this project! Please refer to the following sections on
how to contribute code and bug reports.
Reporting bugs
----------------------------------------------------------------------------------------
At the moment, this project is run in the spare time of a single person
(`Wenzel Jakob <http://rgl.epfl.ch/people/wjakob>`_) with very limited resources for
issue tracker tickets. Thus, before submitting a question or bug report, please take a
moment of your time and ensure that your issue isn't already discussed in the project
documentation elsewhere on this site.
Feature requests are generally closed unless they come with a pull request
that implements the desired functionality.
Assuming that you have identified a previously unknown problem or an important question,
it's essential that you submit a self-contained and minimal piece of code that
reproduces the problem. In other words: no external dependencies, isolate the
function(s) that cause breakage, submit matched and complete C++ or Python snippets
(depending on how you are using NanoGUI) that can be easily compiled and run on my end.
Pull requests
----------------------------------------------------------------------------------------
Contributions are submitted, reviewed, and accepted using Github pull requests. Please
refer to `this article <https://help.github.com/articles/using-pull-requests>`_ for
details and adhere to the following rules to make the process as smooth as possible:
- Make a new branch for every feature you're working on.
- Make small and clean pull requests that are easy to review but make sure they do add
value by themselves.
- Make sure you have tested any new functionality (e.g. if you made a new Widget).
- This project has a strong focus on providing general solutions using a minimal amount
of code, thus small pull requests are greatly preferred.
- Read the remainder of this document, adhering to the bindings and documentation
requirements.
- If making a purely documentation PR, please prefix the commit with ``[docs]``
- E.g. ``[docs] Adding documentation for class X.``
Python Binding Requirements
----------------------------------------------------------------------------------------
Since NanoGUI builds for both C++, as well as produces Python bindings, you **must**
account for both sides of the API regardless of how you use the project. If you are
adding a new method, class, etc (not fixing an existing one), you must write the code
to produce the relevant binding in ``python/python.cpp``.
Code Style Requirements
----------------------------------------------------------------------------------------
- Tabs are 4 spaces -- please do not submit PRs with *tab* characters.
- Most code follows an 80 column ruler, wherever reasonable.
- Pointers and references have modifiers next to variable name, not the type:
- **Yes**: ``void *p``, **No**: ``void* p``
- **Yes**: ``Color &c``, **No**: ``Color& c``
- Template classes / functions: ``template <typename T> method()``
- Space between template and ``<``, on same line where reasonable
- Opening curly braces for definitions / loops / ifs are on the same line as the statement
- **Yes**:
.. code-block:: cpp
for (auto &&c : myVec) {
// ... computation ...
}
- **No**:
.. code-block:: cpp
for(auto &&c : myVec)
{
// ... computation ...
}
Code Documentation Requirements
----------------------------------------------------------------------------------------
When adding new classes, methods, etc please provide meaningful and well formatted
documentation of the new functionality. We use Doxygen comments to document the code,
using the "JavaDoc" style. For consistency, please do not use the QT or other formats.
If you are familiar with how to use Doxygen-style comments:
- You should indent by four spaces for things like ``param``, etc.
- ``\brief``: a brief description.
- ``\tparam``: a template parameter.
- ``\param``: a parameter.
- ``\return``: what the return value represents (where applicable).
For a quick crash-course on documenting using Doxygen:
1. If you are adding a new file, please include the disclaimer at the top **immediately**
followed by ``/** \file */``. So if you are creating the file ``nanogui/file.h``
.. code-block:: cpp
/*
nanogui/file.h -- A brief description of what the file contains.
NanoGUI was developed by Wenzel Jakob <wenzel.jakob@epfl.ch>.
The widget drawing code is based on the NanoVG demo application
by Mikko Mononen.
All rights reserved. Use of this source code is governed by a
BSD-style license that can be found in the LICENSE.txt file.
*/
/** \file */
changing the first line to the right name / description of your file.
2. Documenting a newly added Struct or Class requires special attention. If you are
adding a class ``Thing`` in file ``nanogui/thing.h``, the class level documentation
needs to explicitly declare the location for Doxygen to parse everything correctly.
.. code-block:: cpp
/**
* \class Thing thing.h nanogui/thing.h
*
* This is the actual documentation for the thing.
*/
class Thing { ... };
This simply tells Doxygen how to format the various ``include`` directives. If you
are writing a Struct, replace ``\class`` with ``\struct``.
3. Please fully document all parameters, template parameters, and return types where
applicable. In some cases it is sufficient to include just a brief one-line
documentation string, e.g. the for the :func:`nanogui::Screen::caption` method, it
is simple enough that the following is sufficient (note the **three** ``///``):
.. code-block:: cpp
/// Get the window title bar caption
const std::string &caption() const { return mCaption; }
However, more complicated methods should be thoroughly documented. As an example,
this method demonstrates template parameters, parameters, and return value documentation:
.. code-block:: cpp
/**
* \brief A useless function for getting sizes.
*
* This method has specific things that must be pointed out, but they
* were too long to include in the 'brief' documentation.
*
* \tparam T
* The type we are evaluating the size of.
*
* \param returnFake
* If set to true, a random positive number will be returned. This
* comment is a bit longer and can span multiple lines, making sure
* to indent each new line.
*
* Warning: this had an empty line before it and will NOT appear in
* the documentation of this parameter, but instead it will appear
* in the documentation of the method!
*
* \return
* The result of ``sizeof(T)``.
*/
template <typename T>
size_t exampleTemplateFunction(bool returnFake = false) { ... }
Styling the Code
----------------------------------------------------------------------------------------
Since we are using both Doxygen and Sphinx, we have access to a wealth of interesting
documentation styling.
:From Doxygen:
You can use things like ``\throws``, ``\remark``, and even ``\ref`` to generate html
links to other items.
:From Sphinx:
On the Sphinx side, you now have access to full reStructuredText syntax. This
includes:
- ``**bold**`` to make **bold** text
- ``*italics*`` for *italics*
- ````teletype```` for ``teletype`` text.
You can additionally include more complex reStructuredText such as grid tables, as
well as Sphinx directives. You will need to use the ``\rst`` and ``\endrst``
commands for these:
.. code-block:: cpp
/**
* \brief Some method you are documenting.
*
* \rst
* I am now in a verbatim reStructuredText environment, and can create a grid table.
*
* I could create a python code listing using
*
* .. code-block:: py
*
* print("Some python code.")
*
* You can also use the note or warning directives to highlight important concepts:
*
* .. note::
* You may or may not segfault.
*
* .. warning::
* I guarantee you will segfault.
* \endrst
*/
.. warning::
In normal reStructuredText, if you simply indent a block of code by four spaces
it will render as a code listing. While this will build as expected for the
C++ documentation on RTD, it will **fail** to build ``py_doc.h`` correctly.
For code listings, **always** begin an ``\rst`` section and use ``.. code-block``
as shown above.
TODO
----------------------------------------------------------------------------------------
Documentation Completion
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Already familiar with NanoGUI or a subset of its classes? The documentation for the
following files is incomplete, waiting for your PR. Document a whole class, or even
just a method of a given class.
If you make progress on / complete an item with your PR, please update / remove it from
the table on this page (``docs/contributing.rst``).
.. note::
The NanoGUI documentation hosted online does not include ``private`` methods or
member variables at this time. However, documentation for these is welcome!
.. warning::
In some of these files, you will see preprocessor blocks like
.. code-block:: cpp
#ifndef DOXYGEN_SHOULD_SKIP_THIS
... code that the breaks the documentation ...
#endif // DOXYGEN_SHOULD_SKIP_THIS
Please take care not to remove these!
+-----------------+------------------------------------------------------------+
| Filename | Action Item |
+=================+============================================================+
| button.h | - Most member methods. |
| | - All member variables. |
+-----------------+------------------------------------------------------------+
| checkbox.h | - All member methods and variables. |
+-----------------+------------------------------------------------------------+
| colorpicker.h | - Constructor and callback. |
| | - All member variables. |
+-----------------+------------------------------------------------------------+
| colorwheel.h | - Most methods and member variables. |
+-----------------+------------------------------------------------------------+
| combobox.h | - Most member methods and variables. |
+-----------------+------------------------------------------------------------+
| formhelper.h | - More detailed documentation explaining parameters |
| | for ``FormHelper`` methods. |
| | - Most member variables. |
+-----------------+------------------------------------------------------------+
| graph.h | - All member methods and variables. |
+-----------------+------------------------------------------------------------+
| imagepanel.h | - All member methods and variables. |
+-----------------+------------------------------------------------------------+
| imageview.h | - Most member methods. |
+-----------------+------------------------------------------------------------+
| label.h | - Some member methods and variables. |
+-----------------+------------------------------------------------------------+
| layout.h | - Nearly everything. |
+-----------------+------------------------------------------------------------+
| popup.h | - Some member methods and variables. |
| | - Explicit parameter documentation would be very useful. |
+-----------------+------------------------------------------------------------+
| popupbutton.h | - Almost everything. |
+-----------------+------------------------------------------------------------+
| progressbar.h | - Almost everything. |
+-----------------+------------------------------------------------------------+
| screen.h | - Documentation for the manual GLFW API. |
| | - All member variables. |
+-----------------+------------------------------------------------------------+
| slider.h | - Almost everything. |
+-----------------+------------------------------------------------------------+
| stackedwidget.h | - Almost everything. |
+-----------------+------------------------------------------------------------+
| tabheader.h | - Some member methods. |
| | - Some reformatting of existing documentation to |
| | use ``\param`` or ``\return`` etc. |
+-----------------+------------------------------------------------------------+
| tabwidget.h | - Some member methods. |
| | - Some reformatting of existing documentation to |
| | use ``\param`` or ``\return`` etc. |
+-----------------+------------------------------------------------------------+
| textbox.h | - Almost everything. |
+-----------------+------------------------------------------------------------+
| theme.h | - Explicit documentation for what these all represent. |
+-----------------+------------------------------------------------------------+
| toolbutton.h | - Documentation of the constructor explaining the range of |
| | values that can be used for ``icon``. Or at least where |
| | to look for that? |
+-----------------+------------------------------------------------------------+
| vscrollpanel.h | - Almost everything. |
+-----------------+------------------------------------------------------------+
| widget.h | - Member variables. |
+-----------------+------------------------------------------------------------+
| window.h | - Some member methods. |
| | - All member variables. |
+-----------------+------------------------------------------------------------+
Advanced Contribution Opportunity
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Currently, all partial and full template specializations are skipped. Specifically,
nearly everything in ``include/nanogui/serializer/*``. According to the
`Breathe documentation <https://breathe.readthedocs.io/en/latest/doxygen.html#template>`_
this should be possible. The likely cause of this issue is that the version of Breathe
packaged for use with ``pip`` is not up to date. Your task would be to find a way
to use ``docs/requirements.txt`` to install the **current source** from the master
branch of Breathe instead of using PyPi.
You can test locally by making sure you do not have Breathe installed with ``pip``, and
compiling it yourself (make sure you add it to your ``PATH`` so you can use it in
Python).
Then try moving the ``#ifndef DOXYGEN_SHOULD_SKIP_THIS`` to expose a single template
specialization in a file of your choice, and try and get the documentation to build.
If you succeed with this, the next step will be to find a way to get Read the Docs to
build the current source of Breathe rather than using PyPi.
In theory, all of these are possible.

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.. _nanogui_example_programs:
Examples
========================================================================================
There are example programs available for you to play with / understand how the different
pieces fit together. The C++ examples are in ``nanogui/src/``, and the equivalent
Python examples are in ``nanogui/python``.
.. _nanogui_example_1:
Example 1
----------------------------------------------------------------------------------------
.. image:: ../resources/screenshot.png
:alt: Screenshot of Example 1.
:align: center
The first example program is rather long, but not altogether complicated. It
is effectively an enumeration of how one would go about adding various different kinds
of Widgets to the window being displayed.
- `Example 1 in C++ <https://github.com/wjakob/nanogui/blob/master/src/example1.cpp>`_
- `Example 1 in Python <https://github.com/wjakob/nanogui/blob/master/python/example1.py>`_
.. _nanogui_example_2:
Example 2
----------------------------------------------------------------------------------------
.. image:: ../resources/screenshot2.png
:alt: Screenshot of Example 2.
:align: center
The second program demonstrates how simple label/editor widget-type layouts can
be written in a very concise manner.
- `Example 2 in C++ <https://github.com/wjakob/nanogui/blob/master/src/example2.cpp>`_
- `Example 2 in Python <https://github.com/wjakob/nanogui/blob/master/python/example2.py>`_
.. _nanogui_example_3:
Example 3
----------------------------------------------------------------------------------------
The third example program demonstrates how to manage OpenGL / GLFW on your own for the
C++ side, and how to detach the NanoGUI ``mainloop()`` on the Python side.
- `Example 3 in C++ <https://github.com/wjakob/nanogui/blob/master/src/example3.cpp>`_
- `Example 3 in Python <https://github.com/wjakob/nanogui/blob/master/python/example3.py>`_
.. _nanogui_example_4:
Example 4
----------------------------------------------------------------------------------------
The fourth example program demonstrates the GLCanvas widget, which renders an
arbitrary sequence of OpenGL commands into a NanoGUI widget.
- `Example 4 in C++ <https://github.com/wjakob/nanogui/blob/master/src/example4.cpp>`_
- `Example 4 in Python <https://github.com/wjakob/nanogui/blob/master/python/example4.py>`_
.. _nanogui_example_icons:
Example Icons
----------------------------------------------------------------------------------------
NanoGUI includes various icons made available from :ref:`file_nanogui_entypo.h`,
courtesy of `Daniel Bruce's Entypo <http://www.entypo.com/>`_ glyphs. The file level
documentation is useful as a reference for selecting an icon, but the web rendering may
be misleading --- NanoGUI uses a dark background for widgets by default.
Run the ``exampleIcon`` executable to see what the icons look like in NanoGUI. The
setup of this file may also be helpful in understanding how to control the
:class:`nanogui::VScrollPanel`.
- `Example Icons in C++ <https://github.com/wjakob/nanogui/blob/master/src/example_icons.cpp>`_
- `Example Icons in Python <https://github.com/wjakob/nanogui/blob/master/python/example_icons.py>`_
.. _nanogui_example_repository:
Example Repository
----------------------------------------------------------------------------------------
Darren Mothersele has put together a compact and informative example repository that
demonstrates how easy it is to include NanoGUI into your project. You download / browse
the source on `GitHub <https://github.com/darrenmothersele/nanogui-test.git>`_.

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NanoGUI
========================================================================================
.. include:: ../README.rst
:start-after: begin_brief_description
:end-before: end_brief_description
Example Screenshot
----------------------------------------------------------------------------------------
.. image:: ../resources/screenshot.png
:alt: Screenshot of Example 1.
:align: center
Description
----------------------------------------------------------------------------------------
.. include:: ../README.rst
:start-after: begin_long_description
:end-before: end_long_description
"Simple mode"
----------------------------------------------------------------------------------------
Christian Schüller contributed a convenience class that makes it possible to create
AntTweakBar-style variable manipulators using just a few lines of code. Refer to
:ref:`nanogui_example_2` for how to create the image below.
.. image:: ../resources/screenshot2.png
:alt: Screenshot of Example 2.
:align: center
License
----------------------------------------------------------------------------------------
.. include:: ../README.rst
:start-after: begin_license
:end-before: end_license
.. note::
The CC BY-SA 4.0 license should not be an issue for most projects. However, you can
adopt a different font for icons if you need. See :ref:`nanogui_including_custom_fonts`.
Contents
========================================================================================
.. toctree::
:maxdepth: 2
usage
compilation
examples
api/library_root
contributing
Indices and tables
==================
* :ref:`genindex`
* :ref:`modindex`
* :ref:`search`

36
cs440-acg/ext/nanogui/docs/make.bat Normal file
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@ECHO OFF
pushd %~dp0
REM Command file for Sphinx documentation
if "%SPHINXBUILD%" == "" (
set SPHINXBUILD=python -msphinx
)
set SOURCEDIR=.
set BUILDDIR=_build
set SPHINXPROJ=NanoGUI
if "%1" == "" goto help
%SPHINXBUILD% >NUL 2>NUL
if errorlevel 9009 (
echo.
echo.The Sphinx module was not found. Make sure you have Sphinx installed,
echo.then set the SPHINXBUILD environment variable to point to the full
echo.path of the 'sphinx-build' executable. Alternatively you may add the
echo.Sphinx directory to PATH.
echo.
echo.If you don't have Sphinx installed, grab it from
echo.http://sphinx-doc.org/
exit /b 1
)
%SPHINXBUILD% -M %1 %SOURCEDIR% %BUILDDIR% %SPHINXOPTS%
goto end
:help
%SPHINXBUILD% -M help %SOURCEDIR% %BUILDDIR% %SPHINXOPTS%
:end
popd

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cs440-acg/ext/nanogui/docs/requirements.txt Normal file
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# Breathe and Sphinx 2.x are incompatible at this time
Sphinx==1.8.5
exhale
sphinx_rtd_theme

49
cs440-acg/ext/nanogui/docs/usage.rst Normal file
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Usage
========================================================================================
C++
----------------------------------------------------------------------------------------
There are effectively two ways that you can use NanoGUI in C++: have NanoGUI initialize
and manage the OpenGL context (and GLFW), or you do it manually.
1. If you are letting NanoGUI take over, you **must** call :ref:`function_nanogui__init`
before trying to do anything else. If you are managing OpenGL / GLFW yourself, make
sure you **avoid** calling this method.
2. Create an instance of :ref:`class_nanogui__Screen` (or a derivative class you have
written).
- NanoGUI managed OpenGL: call the explicit constructor.
- Self managed OpenGL: call the empty constructor.
- You must call the :func:`nanogui::Screen::initialize` method.
3. Add any Widgets, Buttons, etc. you want to the screen instance, and call the
:func:`nanogui::Screen::setVisible` and :func:`nanogui::Screen::performLayout`
methods of your instance.
4. Now that everything is ready, call :ref:`function_nanogui__mainloop`.
5. When all windows are closed, this function will exit, and you should follow it up
with a call to :ref:`function_nanogui__shutdown`.
:NanoGUI Managed OpenGL / GLFW:
Refer to :ref:`nanogui_example_2` for a concise example of what that all looks like.
:Self Managed OpenGL / GLFW:
Refer to :ref:`nanogui_example_3` for an as concise as possible example of what you
will need to do to get the :ref:`class_nanogui__Screen` to work.
Python
----------------------------------------------------------------------------------------
The Python interface is very similar to the C++ API. When you build NanoGUI with CMake,
a ``python`` folder is created with the library you ``import nanogui`` from. Though
there are implementation details that differ greatly, the documentation and build
process for the Python side is roughly the same. Refer to the
:ref:`nanogui_example_programs` and compare the source code for the two.
:ref:`nanogui_example_3` highlights the more notable differences between the APIs.
Specifically, that managing GLFW from Python has no meaning, as well as the main loop
for Python can easily be detached.

26
cs440-acg/ext/nanogui/ext/coro/LICENSE Normal file
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Copyright (c) 2000-2009 Marc Alexander Lehmann <schmorp@schmorp.de>
Redistribution and use in source and binary forms, with or without modifica-
tion, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
OF THE POSSIBILITY OF SUCH DAMAGE.
Alternatively, the following files carry an additional notice that
explicitly allows relicensing under the GPLv2: coro.c, coro.h.

6
cs440-acg/ext/nanogui/ext/coro/README Normal file
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Configuration, documentation etc. is provided in the coro.h file. Please
note that the file conftest.c in this distribution is under the GPL. It is
not needed for proper operation of this library though, for that, coro.h
and coro.c suffice.
Marc Lehmann <schmorp@schmorp.de>

803
cs440-acg/ext/nanogui/ext/coro/coro.c Normal file
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/*
* Copyright (c) 2001-2011 Marc Alexander Lehmann <schmorp@schmorp.de>
*
* Redistribution and use in source and binary forms, with or without modifica-
* tion, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Alternatively, the contents of this file may be used under the terms of
* the GNU General Public License ("GPL") version 2 or any later version,
* in which case the provisions of the GPL are applicable instead of
* the above. If you wish to allow the use of your version of this file
* only under the terms of the GPL and not to allow others to use your
* version of this file under the BSD license, indicate your decision
* by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL. If you do not delete the
* provisions above, a recipient may use your version of this file under
* either the BSD or the GPL.
*
* This library is modelled strictly after Ralf S. Engelschalls article at
* http://www.gnu.org/software/pth/rse-pmt.ps. So most of the credit must
* go to Ralf S. Engelschall <rse@engelschall.com>.
*/
#include "coro.h"
#include <stddef.h>
#include <string.h>
/*****************************************************************************/
/* ucontext/setjmp/asm backends */
/*****************************************************************************/
#if CORO_UCONTEXT || CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX || CORO_ASM
# if CORO_UCONTEXT
# include <stddef.h>
# endif
# if !defined(STACK_ADJUST_PTR)
# if __sgi
/* IRIX is decidedly NON-unix */
# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)
# define STACK_ADJUST_SIZE(sp,ss) ((ss) - 8)
# elif (__i386__ && CORO_LINUX) || (_M_IX86 && CORO_LOSER)
# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss))
# define STACK_ADJUST_SIZE(sp,ss) (ss)
# elif (__amd64__ && CORO_LINUX) || ((_M_AMD64 || _M_IA64) && CORO_LOSER)
# define STACK_ADJUST_PTR(sp,ss) ((char *)(sp) + (ss) - 8)
# define STACK_ADJUST_SIZE(sp,ss) (ss)
# else
# define STACK_ADJUST_PTR(sp,ss) (sp)
# define STACK_ADJUST_SIZE(sp,ss) (ss)
# endif
# endif
# include <stdlib.h>
# if CORO_SJLJ
# include <stdio.h>
# include <signal.h>
# include <unistd.h>
# endif
static coro_func coro_init_func;
static void *coro_init_arg;
static coro_context *new_coro, *create_coro;
static void
coro_init (void)
{
volatile coro_func func = coro_init_func;
volatile void *arg = coro_init_arg;
coro_transfer (new_coro, create_coro);
#if __GCC_HAVE_DWARF2_CFI_ASM && __amd64
asm (".cfi_undefined rip");
#endif
func ((void *)arg);
/* the new coro returned. bad. just abort() for now */
abort ();
}
# if CORO_SJLJ
static volatile int trampoline_done;
/* trampoline signal handler */
static void
trampoline (int sig)
{
if (coro_setjmp (new_coro->env))
coro_init (); /* start it */
else
trampoline_done = 1;
}
# endif
# if CORO_ASM
#if __arm__ && \
(defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
|| defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__ \
|| __ARCH_ARCH == 7)
#define CORO_ARM 1
#endif
#if _WIN32 || __CYGWIN__
#define CORO_WIN_TIB 1
#endif
asm (
"\t.text\n"
#if _WIN32 || __CYGWIN__
"\t.globl _coro_transfer\n"
"_coro_transfer:\n"
#else
"\t.globl coro_transfer\n"
"coro_transfer:\n"
#endif
/* windows, of course, gives a shit on the amd64 ABI and uses different registers */
/* http://blogs.msdn.com/freik/archive/2005/03/17/398200.aspx */
#if __amd64
#if _WIN32 || __CYGWIN__
#define NUM_SAVED 29
"\tsubq $168, %rsp\t" /* one dummy qword to improve alignment */
"\tmovaps %xmm6, (%rsp)\n"
"\tmovaps %xmm7, 16(%rsp)\n"
"\tmovaps %xmm8, 32(%rsp)\n"
"\tmovaps %xmm9, 48(%rsp)\n"
"\tmovaps %xmm10, 64(%rsp)\n"
"\tmovaps %xmm11, 80(%rsp)\n"
"\tmovaps %xmm12, 96(%rsp)\n"
"\tmovaps %xmm13, 112(%rsp)\n"
"\tmovaps %xmm14, 128(%rsp)\n"
"\tmovaps %xmm15, 144(%rsp)\n"
"\tpushq %rsi\n"
"\tpushq %rdi\n"
"\tpushq %rbp\n"
"\tpushq %rbx\n"
"\tpushq %r12\n"
"\tpushq %r13\n"
"\tpushq %r14\n"
"\tpushq %r15\n"
#if CORO_WIN_TIB
"\tpushq %fs:0x0\n"
"\tpushq %fs:0x8\n"
"\tpushq %fs:0xc\n"
#endif
"\tmovq %rsp, (%rcx)\n"
"\tmovq (%rdx), %rsp\n"
#if CORO_WIN_TIB
"\tpopq %fs:0xc\n"
"\tpopq %fs:0x8\n"
"\tpopq %fs:0x0\n"
#endif
"\tpopq %r15\n"
"\tpopq %r14\n"
"\tpopq %r13\n"
"\tpopq %r12\n"
"\tpopq %rbx\n"
"\tpopq %rbp\n"
"\tpopq %rdi\n"
"\tpopq %rsi\n"
"\tmovaps (%rsp), %xmm6\n"
"\tmovaps 16(%rsp), %xmm7\n"
"\tmovaps 32(%rsp), %xmm8\n"
"\tmovaps 48(%rsp), %xmm9\n"
"\tmovaps 64(%rsp), %xmm10\n"
"\tmovaps 80(%rsp), %xmm11\n"
"\tmovaps 96(%rsp), %xmm12\n"
"\tmovaps 112(%rsp), %xmm13\n"
"\tmovaps 128(%rsp), %xmm14\n"
"\tmovaps 144(%rsp), %xmm15\n"
"\taddq $168, %rsp\n"
#else
#define NUM_SAVED 6
"\tpushq %rbp\n"
"\tpushq %rbx\n"
"\tpushq %r12\n"
"\tpushq %r13\n"
"\tpushq %r14\n"
"\tpushq %r15\n"
"\tmovq %rsp, (%rdi)\n"
"\tmovq (%rsi), %rsp\n"
"\tpopq %r15\n"
"\tpopq %r14\n"
"\tpopq %r13\n"
"\tpopq %r12\n"
"\tpopq %rbx\n"
"\tpopq %rbp\n"
#endif
"\tpopq %rcx\n"
"\tjmpq *%rcx\n"
#elif __i386__
#define NUM_SAVED 4
"\tpushl %ebp\n"
"\tpushl %ebx\n"
"\tpushl %esi\n"
"\tpushl %edi\n"
#if CORO_WIN_TIB
#undef NUM_SAVED
#define NUM_SAVED 7
"\tpushl %fs:0\n"
"\tpushl %fs:4\n"
"\tpushl %fs:8\n"
#endif
"\tmovl %esp, (%eax)\n"
"\tmovl (%edx), %esp\n"
#if CORO_WIN_TIB
"\tpopl %fs:8\n"
"\tpopl %fs:4\n"
"\tpopl %fs:0\n"
#endif
"\tpopl %edi\n"
"\tpopl %esi\n"
"\tpopl %ebx\n"
"\tpopl %ebp\n"
"\tpopl %ecx\n"
"\tjmpl *%ecx\n"
#elif CORO_ARM /* untested, what about thumb, neon, iwmmxt? */
#if __ARM_PCS_VFP
"\tvpush {d8-d15}\n"
#define NUM_SAVED (9 + 8 * 2)
#else
#define NUM_SAVED 9
#endif
"\tpush {r4-r11,lr}\n"
"\tstr sp, [r0]\n"
"\tldr sp, [r1]\n"
"\tpop {r4-r11,lr}\n"
#if __ARM_PCS_VFP
"\tvpop {d8-d15}\n"
#endif
"\tmov r15, lr\n"
#elif __mips__ && 0 /* untested, 32 bit only */
#define NUM_SAVED (12 + 8 * 2)
/* TODO: n64/o64, lw=>ld */
"\t.set nomips16\n"
"\t.frame $sp,112,$31\n"
#if __mips_soft_float
"\taddiu $sp,$sp,-44\n"
#else
"\taddiu $sp,$sp,-112\n"
"\ts.d $f30,88($sp)\n"
"\ts.d $f28,80($sp)\n"
"\ts.d $f26,72($sp)\n"
"\ts.d $f24,64($sp)\n"
"\ts.d $f22,56($sp)\n"
"\ts.d $f20,48($sp)\n"
#endif
"\tsw $28,40($sp)\n"
"\tsw $31,36($sp)\n"
"\tsw $fp,32($sp)\n"
"\tsw $23,28($sp)\n"
"\tsw $22,24($sp)\n"
"\tsw $21,20($sp)\n"
"\tsw $20,16($sp)\n"
"\tsw $19,12($sp)\n"
"\tsw $18,8($sp)\n"
"\tsw $17,4($sp)\n"
"\tsw $16,0($sp)\n"
"\tsw $sp,0($4)\n"
"\tlw $sp,0($5)\n"
#if !__mips_soft_float
"\tl.d $f30,88($sp)\n"
"\tl.d $f28,80($sp)\n"
"\tl.d $f26,72($sp)\n"
"\tl.d $f24,64($sp)\n"
"\tl.d $f22,56($sp)\n"
"\tl.d $f20,48($sp)\n"
#endif
"\tlw $28,40($sp)\n"
"\tlw $31,36($sp)\n"
"\tlw $fp,32($sp)\n"
"\tlw $23,28($sp)\n"
"\tlw $22,24($sp)\n"
"\tlw $21,20($sp)\n"
"\tlw $20,16($sp)\n"
"\tlw $19,12($sp)\n"
"\tlw $18,8($sp)\n"
"\tlw $17,4($sp)\n"
"\tlw $16,0($sp)\n"
"\tj $31\n"
#if __mips_soft_float
"\taddiu $sp,$sp,44\n"
#else
"\taddiu $sp,$sp,112\n"
#endif
#else
#error unsupported architecture
#endif
);
# endif
void
coro_create (coro_context *ctx, coro_func coro, void *arg, void *sptr, size_t ssize)
{
coro_context nctx;
# if CORO_SJLJ
stack_t ostk, nstk;
struct sigaction osa, nsa;
sigset_t nsig, osig;
# endif
if (!coro)
return;
coro_init_func = coro;
coro_init_arg = arg;
new_coro = ctx;
create_coro = &nctx;
# if CORO_SJLJ
/* we use SIGUSR2. first block it, then fiddle with it. */
sigemptyset (&nsig);
sigaddset (&nsig, SIGUSR2);
sigprocmask (SIG_BLOCK, &nsig, &osig);
nsa.sa_handler = trampoline;
sigemptyset (&nsa.sa_mask);
nsa.sa_flags = SA_ONSTACK;
if (sigaction (SIGUSR2, &nsa, &osa))
{
perror ("sigaction");
abort ();
}
/* set the new stack */
nstk.ss_sp = STACK_ADJUST_PTR (sptr, ssize); /* yes, some platforms (IRIX) get this wrong. */
nstk.ss_size = STACK_ADJUST_SIZE (sptr, ssize);
nstk.ss_flags = 0;
if (sigaltstack (&nstk, &ostk) < 0)
{
perror ("sigaltstack");
abort ();
}
trampoline_done = 0;
kill (getpid (), SIGUSR2);
sigfillset (&nsig); sigdelset (&nsig, SIGUSR2);
while (!trampoline_done)
sigsuspend (&nsig);
sigaltstack (0, &nstk);
nstk.ss_flags = SS_DISABLE;
if (sigaltstack (&nstk, 0) < 0)
perror ("sigaltstack");
sigaltstack (0, &nstk);
if (~nstk.ss_flags & SS_DISABLE)
abort ();
if (~ostk.ss_flags & SS_DISABLE)
sigaltstack (&ostk, 0);
sigaction (SIGUSR2, &osa, 0);
sigprocmask (SIG_SETMASK, &osig, 0);
# elif CORO_LOSER
coro_setjmp (ctx->env);
#if __CYGWIN__ && __i386__
ctx->env[8] = (long) coro_init;
ctx->env[7] = (long) ((char *)sptr + ssize) - sizeof (long);
#elif __CYGWIN__ && __x86_64__
ctx->env[7] = (long) coro_init;
ctx->env[6] = (long) ((char *)sptr + ssize) - sizeof (long);
#elif defined __MINGW32__
ctx->env[5] = (long) coro_init;
ctx->env[4] = (long) ((char *)sptr + ssize) - sizeof (long);
#elif defined _M_IX86
((_JUMP_BUFFER *)&ctx->env)->Eip = (long) coro_init;
((_JUMP_BUFFER *)&ctx->env)->Esp = (long) STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
#elif defined _M_AMD64
((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64) coro_init;
((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64);
#elif defined _M_IA64
((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64) coro_init;
((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64);
#else
#error "microsoft libc or architecture not supported"
#endif
# elif CORO_LINUX
coro_setjmp (ctx->env);
#if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP)
ctx->env[0].__jmpbuf[JB_PC] = (long) coro_init;
ctx->env[0].__jmpbuf[JB_SP] = (long) STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
#elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__)
ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init;
ctx->env[0].__jmpbuf[0].__sp = (int *) ((char *)sptr + ssize) - sizeof (long);
#elif defined (__GNU_LIBRARY__) && defined (__i386__)
ctx->env[0].__jmpbuf[0].__pc = (char *) coro_init;
ctx->env[0].__jmpbuf[0].__sp = (void *) ((char *)sptr + ssize) - sizeof (long);
#elif defined (__GNU_LIBRARY__) && defined (__x86_64__)
ctx->env[0].__jmpbuf[JB_PC] = (long) coro_init;
ctx->env[0].__jmpbuf[0].__sp = (void *) ((char *)sptr + ssize) - sizeof (long);
#else
#error "linux libc or architecture not supported"
#endif
# elif CORO_IRIX
coro_setjmp (ctx->env, 0);
ctx->env[JB_PC] = (__uint64_t)coro_init;
ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long);
# elif CORO_ASM
#if __i386__ || __x86_64__
ctx->sp = (void **)(ssize + (char *)sptr);
*--ctx->sp = (void *)abort; /* needed for alignment only */
*--ctx->sp = (void *)coro_init;
#if CORO_WIN_TIB
*--ctx->sp = 0; /* ExceptionList */
*--ctx->sp = (char *)sptr + ssize; /* StackBase */
*--ctx->sp = sptr; /* StackLimit */
#endif
#elif CORO_ARM
/* return address stored in lr register, don't push anything */
#else
#error unsupported architecture
#endif
ctx->sp -= NUM_SAVED;
memset (ctx->sp, 0, sizeof (*ctx->sp) * NUM_SAVED);
#if __i386__ || __x86_64__
/* done already */
#elif CORO_ARM
ctx->sp[0] = coro; /* r4 */
ctx->sp[1] = arg; /* r5 */
ctx->sp[8] = (char *)coro_init; /* lr */
#else
#error unsupported architecture
#endif
# elif CORO_UCONTEXT
getcontext (&(ctx->uc));
ctx->uc.uc_link = 0;
ctx->uc.uc_stack.ss_sp = sptr;
ctx->uc.uc_stack.ss_size = (size_t)ssize;
ctx->uc.uc_stack.ss_flags = 0;
makecontext (&(ctx->uc), (void (*)())coro_init, 0);
# endif
coro_transfer (create_coro, new_coro);
}
/*****************************************************************************/
/* pthread backend */
/*****************************************************************************/
#elif CORO_PTHREAD
/* this mutex will be locked by the running coroutine */
pthread_mutex_t coro_mutex = PTHREAD_MUTEX_INITIALIZER;
struct coro_init_args
{
coro_func func;
void *arg;
coro_context *self, *main;
};
static pthread_t null_tid;
/* I'd so love to cast pthread_mutex_unlock to void (*)(void *)... */
static void
mutex_unlock_wrapper (void *arg)
{
pthread_mutex_unlock ((pthread_mutex_t *)arg);
}
static void *
coro_init (void *args_)
{
struct coro_init_args *args = (struct coro_init_args *)args_;
coro_func func = args->func;
void *arg = args->arg;
pthread_mutex_lock (&coro_mutex);
/* we try to be good citizens and use deferred cancellation and cleanup handlers */
pthread_cleanup_push (mutex_unlock_wrapper, &coro_mutex);
coro_transfer (args->self, args->main);
func (arg);
pthread_cleanup_pop (1);
return 0;
}
void
coro_transfer (coro_context *prev, coro_context *next)
{
pthread_cond_signal (&next->cv);
pthread_cond_wait (&prev->cv, &coro_mutex);
#if __FreeBSD__ /* freebsd is of course broken and needs manual testcancel calls... yay... */
pthread_testcancel ();
#endif
}
void
coro_create (coro_context *ctx, coro_func coro, void *arg, void *sptr, size_t ssize)
{
static coro_context nctx;
static int once;
if (!once)
{
once = 1;
pthread_mutex_lock (&coro_mutex);
pthread_cond_init (&nctx.cv, 0);
null_tid = pthread_self ();
}
pthread_cond_init (&ctx->cv, 0);
if (coro)
{
pthread_attr_t attr;
struct coro_init_args args;
args.func = coro;
args.arg = arg;
args.self = ctx;
args.main = &nctx;
pthread_attr_init (&attr);
#if __UCLIBC__
/* exists, but is borked */
/*pthread_attr_setstacksize (&attr, (size_t)ssize);*/
#elif __CYGWIN__
/* POSIX, not here */
pthread_attr_setstacksize (&attr, (size_t)ssize);
#else
pthread_attr_setstack (&attr, sptr, (size_t)ssize);
#endif
pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
pthread_create (&ctx->id, &attr, coro_init, &args);
coro_transfer (args.main, args.self);
}
else
ctx->id = null_tid;
}
void
coro_destroy (coro_context *ctx)
{
if (!pthread_equal (ctx->id, null_tid))
{
pthread_cancel (ctx->id);
pthread_mutex_unlock (&coro_mutex);
pthread_join (ctx->id, 0);
pthread_mutex_lock (&coro_mutex);
}
pthread_cond_destroy (&ctx->cv);
}
/*****************************************************************************/
/* fiber backend */
/*****************************************************************************/
#elif CORO_FIBER
#define WIN32_LEAN_AND_MEAN
#if _WIN32_WINNT < 0x0400
#undef _WIN32_WINNT
#define _WIN32_WINNT 0x0400
#endif
#include <windows.h>
VOID CALLBACK
coro_init (PVOID arg)
{
coro_context *ctx = (coro_context *)arg;
ctx->coro (ctx->arg);
}
void
coro_transfer (coro_context *prev, coro_context *next)
{
if (!prev->fiber)
{
prev->fiber = GetCurrentFiber ();
if (prev->fiber == 0 || prev->fiber == (void *)0x1e00)
prev->fiber = ConvertThreadToFiber (0);
}
SwitchToFiber (next->fiber);
}
void
coro_create (coro_context *ctx, coro_func coro, void *arg, void *sptr, size_t ssize)
{
ctx->fiber = 0;
ctx->coro = coro;
ctx->arg = arg;
if (!coro)
return;
ctx->fiber = CreateFiber (ssize, coro_init, ctx);
}
void
coro_destroy (coro_context *ctx)
{
DeleteFiber (ctx->fiber);
}
#else
#error unsupported backend
#endif
/*****************************************************************************/
/* stack management */
/*****************************************************************************/
#if CORO_STACKALLOC
#include <stdlib.h>
#ifndef _WIN32
# include <unistd.h>
#endif
#if CORO_USE_VALGRIND
# include <valgrind/valgrind.h>
#endif
#if _POSIX_MAPPED_FILES
# include <sys/mman.h>
# define CORO_MMAP 1
# ifndef MAP_ANONYMOUS
# ifdef MAP_ANON
# define MAP_ANONYMOUS MAP_ANON
# else
# undef CORO_MMAP
# endif
# endif
# include <limits.h>
#else
# undef CORO_MMAP
#endif
#if _POSIX_MEMORY_PROTECTION
# ifndef CORO_GUARDPAGES
# define CORO_GUARDPAGES 4
# endif
#else
# undef CORO_GUARDPAGES
#endif
#if !CORO_MMAP
# undef CORO_GUARDPAGES
#endif
#if !__i386__ && !__x86_64__ && !__powerpc__ && !__arm__ && !__aarch64__ && !__m68k__ && !__alpha__ && !__mips__ && !__sparc64__
# undef CORO_GUARDPAGES
#endif
#ifndef CORO_GUARDPAGES
# define CORO_GUARDPAGES 0
#endif
#if !PAGESIZE
#if !CORO_MMAP
#define PAGESIZE 4096
#else
static size_t
coro_pagesize (void)
{
static size_t pagesize;
if (!pagesize)
pagesize = sysconf (_SC_PAGESIZE);
return pagesize;
}
#define PAGESIZE coro_pagesize ()
#endif
#endif
int
coro_stack_alloc (struct coro_stack *stack, unsigned int size)
{
if (!size)
size = 256 * 1024;
stack->sptr = 0;
stack->ssze = ((size_t)size * sizeof (void *) + PAGESIZE - 1) / PAGESIZE * PAGESIZE;
#if CORO_FIBER
stack->sptr = (void *)stack;
return 1;
#else
size_t ssze = stack->ssze + CORO_GUARDPAGES * PAGESIZE;
void *base;
#if CORO_MMAP
/* mmap supposedly does allocate-on-write for us */
base = mmap (0, ssze, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (base == (void *)-1)
{
/* some systems don't let us have executable heap */
/* we assume they won't need executable stack in that case */
base = mmap (0, ssze, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (base == (void *)-1)
return 0;
}
#if CORO_GUARDPAGES
mprotect (base, CORO_GUARDPAGES * PAGESIZE, PROT_NONE);
#endif
base = (void*)((char *)base + CORO_GUARDPAGES * PAGESIZE);
#else
base = malloc (ssze);
if (!base)
return 0;
#endif
#if CORO_USE_VALGRIND
stack->valgrind_id = VALGRIND_STACK_REGISTER ((char *)base, ((char *)base) + ssze - CORO_GUARDPAGES * PAGESIZE);
#endif
stack->sptr = base;
return 1;
#endif
}
void
coro_stack_free (struct coro_stack *stack)
{
#if CORO_FIBER
/* nop */
#else
#if CORO_USE_VALGRIND
VALGRIND_STACK_DEREGISTER (stack->valgrind_id);
#endif
#if CORO_MMAP
if (stack->sptr)
munmap ((void*)((char *)stack->sptr - CORO_GUARDPAGES * PAGESIZE),
stack->ssze + CORO_GUARDPAGES * PAGESIZE);
#else
free (stack->sptr);
#endif
#endif
}
#endif

425
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/*
* Copyright (c) 2001-2012,2015 Marc Alexander Lehmann <schmorp@schmorp.de>
*
* Redistribution and use in source and binary forms, with or without modifica-
* tion, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Alternatively, the contents of this file may be used under the terms of
* the GNU General Public License ("GPL") version 2 or any later version,
* in which case the provisions of the GPL are applicable instead of
* the above. If you wish to allow the use of your version of this file
* only under the terms of the GPL and not to allow others to use your
* version of this file under the BSD license, indicate your decision
* by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL. If you do not delete the
* provisions above, a recipient may use your version of this file under
* either the BSD or the GPL.
*
* This library is modelled strictly after Ralf S. Engelschalls article at
* http://www.gnu.org/software/pth/rse-pmt.ps. So most of the credit must
* go to Ralf S. Engelschall <rse@engelschall.com>.
*
* This coroutine library is very much stripped down. You should either
* build your own process abstraction using it or - better - just use GNU
* Portable Threads, http://www.gnu.org/software/pth/.
*
*/
/*
* 2006-10-26 Include stddef.h on OS X to work around one of its bugs.
* Reported by Michael_G_Schwern.
* 2006-11-26 Use _setjmp instead of setjmp on GNU/Linux.
* 2007-04-27 Set unwind frame info if gcc 3+ and ELF is detected.
* Use _setjmp instead of setjmp on _XOPEN_SOURCE >= 600.
* 2007-05-02 Add assembly versions for x86 and amd64 (to avoid reliance
* on SIGUSR2 and sigaltstack in Crossfire).
* 2008-01-21 Disable CFI usage on anything but GNU/Linux.
* 2008-03-02 Switched to 2-clause BSD license with GPL exception.
* 2008-04-04 New (but highly unrecommended) pthreads backend.
* 2008-04-24 Reinstate CORO_LOSER (had wrong stack adjustments).
* 2008-10-30 Support assembly method on x86 with and without frame pointer.
* 2008-11-03 Use a global asm statement for CORO_ASM, idea by pippijn.
* 2008-11-05 Hopefully fix misaligned stacks with CORO_ASM/SETJMP.
* 2008-11-07 rbp wasn't saved in CORO_ASM on x86_64.
* introduce coro_destroy, which is a nop except for pthreads.
* speed up CORO_PTHREAD. Do no longer leak threads either.
* coro_create now allows one to create source coro_contexts.
* do not rely on makecontext passing a void * correctly.
* try harder to get _setjmp/_longjmp.
* major code cleanup/restructuring.
* 2008-11-10 the .cfi hacks are no longer needed.
* 2008-11-16 work around a freebsd pthread bug.
* 2008-11-19 define coro_*jmp symbols for easier porting.
* 2009-06-23 tentative win32-backend support for mingw32 (Yasuhiro Matsumoto).
* 2010-12-03 tentative support for uclibc (which lacks all sorts of things).
* 2011-05-30 set initial callee-saved-registers to zero with CORO_ASM.
* use .cfi_undefined rip on linux-amd64 for better backtraces.
* 2011-06-08 maybe properly implement weird windows amd64 calling conventions.
* 2011-07-03 rely on __GCC_HAVE_DWARF2_CFI_ASM for cfi detection.
* 2011-08-08 cygwin trashes stacks, use pthreads with double stack on cygwin.
* 2012-12-04 reduce misprediction penalty for x86/amd64 assembly switcher.
* 2012-12-05 experimental fiber backend (allocates stack twice).
* 2012-12-07 API version 3 - add coro_stack_alloc/coro_stack_free.
* 2012-12-21 valgrind stack registering was broken.
* 2015-12-05 experimental asm be for arm7, based on a patch by Nick Zavaritsky.
* use __name__ for predefined symbols, as in libecb.
* enable guard pages on arm, aarch64 and mips.
*/
#ifndef CORO_H
#define CORO_H
#if __cplusplus
extern "C" {
#endif
/*
* This library consists of only three files
* coro.h, coro.c and LICENSE (and optionally README)
*
* It implements what is known as coroutines, in a hopefully
* portable way.
*
* All compiletime symbols must be defined both when including coro.h
* (using libcoro) as well as when compiling coro.c (the implementation).
*
* You can manually specify which flavour you want. If you don't define
* any of these, libcoro tries to choose a safe and fast default:
*
* -DCORO_UCONTEXT
*
* This flavour uses SUSv2's get/set/swap/makecontext functions that
* unfortunately only some unices support, and is quite slow.
*
* -DCORO_SJLJ
*
* This flavour uses SUSv2's setjmp/longjmp and sigaltstack functions to
* do it's job. Coroutine creation is much slower than UCONTEXT, but
* context switching is a bit cheaper. It should work on almost all unices.
*
* -DCORO_LINUX
*
* CORO_SJLJ variant.
* Old GNU/Linux systems (<= glibc-2.1) only work with this implementation
* (it is very fast and therefore recommended over other methods, but
* doesn't work with anything newer).
*
* -DCORO_LOSER
*
* CORO_SJLJ variant.
* Microsoft's highly proprietary platform doesn't support sigaltstack, and
* this selects a suitable workaround for this platform. It might not work
* with your compiler though - it has only been tested with MSVC 6.
*
* -DCORO_FIBER
*
* Slower, but probably more portable variant for the Microsoft operating
* system, using fibers. Ignores the passed stack and allocates it internally.
* Also, due to bugs in cygwin, this does not work with cygwin.
*
* -DCORO_IRIX
*
* CORO_SJLJ variant.
* For SGI's version of Microsoft's NT ;)
*
* -DCORO_ASM
*
* Hand coded assembly, known to work only on a few architectures/ABI:
* GCC + arm7/x86/IA32/amd64/x86_64 + GNU/Linux and a few BSDs. Fastest
* choice, if it works.
*
* -DCORO_PTHREAD
*
* Use the pthread API. You have to provide <pthread.h> and -lpthread.
* This is likely the slowest backend, and it also does not support fork(),
* so avoid it at all costs.
*
* If you define neither of these symbols, coro.h will try to autodetect
* the best/safest model. To help with the autodetection, you should check
* (e.g. using autoconf) and define the following symbols: HAVE_UCONTEXT_H
* / HAVE_SETJMP_H / HAVE_SIGALTSTACK.
*/
/*
* Changes when the API changes incompatibly.
* This is ONLY the API version - there is no ABI compatibility between releases.
*
* Changes in API version 2:
* replaced bogus -DCORO_LOOSE with grammatically more correct -DCORO_LOSER
* Changes in API version 3:
* introduced stack management (CORO_STACKALLOC)
*/
#define CORO_VERSION 3
#include <stddef.h>
/*
* This is the type for the initialization function of a new coroutine.
*/
typedef void (*coro_func)(void *);
/*
* A coroutine state is saved in the following structure. Treat it as an
* opaque type. errno and sigmask might be saved, but don't rely on it,
* implement your own switching primitive if you need that.
*/
typedef struct coro_context coro_context;
/*
* This function creates a new coroutine. Apart from a pointer to an
* uninitialised coro_context, it expects a pointer to the entry function
* and the single pointer value that is given to it as argument.
*
* Allocating/deallocating the stack is your own responsibility.
*
* As a special case, if coro, arg, sptr and ssze are all zero,
* then an "empty" coro_context will be created that is suitable
* as an initial source for coro_transfer.
*
* This function is not reentrant, but putting a mutex around it
* will work.
*/
void coro_create (coro_context *ctx, /* an uninitialised coro_context */
coro_func coro, /* the coroutine code to be executed */
void *arg, /* a single pointer passed to the coro */
void *sptr, /* start of stack area */
size_t ssze); /* size of stack area in bytes */
/*
* The following prototype defines the coroutine switching function. It is
* sometimes implemented as a macro, so watch out.
*
* This function is thread-safe and reentrant.
*/
#if 0
void coro_transfer (coro_context *prev, coro_context *next);
#endif
/*
* The following prototype defines the coroutine destroy function. It
* is sometimes implemented as a macro, so watch out. It also serves no
* purpose unless you want to use the CORO_PTHREAD backend, where it is
* used to clean up the thread. You are responsible for freeing the stack
* and the context itself.
*
* This function is thread-safe and reentrant.
*/
#if 0
void coro_destroy (coro_context *ctx);
#endif
/*****************************************************************************/
/* optional stack management */
/*****************************************************************************/
/*
* You can disable all of the stack management functions by
* defining CORO_STACKALLOC to 0. Otherwise, they are enabled by default.
*
* If stack management is enabled, you can influence the implementation via these
* symbols:
*
* -DCORO_USE_VALGRIND
*
* If defined, then libcoro will include valgrind/valgrind.h and register
* and unregister stacks with valgrind.
*
* -DCORO_GUARDPAGES=n
*
* libcoro will try to use the specified number of guard pages to protect against
* stack overflow. If n is 0, then the feature will be disabled. If it isn't
* defined, then libcoro will choose a suitable default. If guardpages are not
* supported on the platform, then the feature will be silently disabled.
*/
#ifndef CORO_STACKALLOC
# define CORO_STACKALLOC 1
#endif
#if CORO_STACKALLOC
/*
* The only allowed operations on these struct members is to read the
* "sptr" and "ssze" members to pass it to coro_create, to read the "sptr"
* member to see if it is false, in which case the stack isn't allocated,
* and to set the "sptr" member to 0, to indicate to coro_stack_free to
* not actually do anything.
*/
struct coro_stack
{
void *sptr;
size_t ssze;
#if CORO_USE_VALGRIND
int valgrind_id;
#endif
};
/*
* Try to allocate a stack of at least the given size and return true if
* successful, or false otherwise.
*
* The size is *NOT* specified in bytes, but in units of sizeof (void *),
* i.e. the stack is typically 4(8) times larger on 32 bit(64 bit) platforms
* then the size passed in.
*
* If size is 0, then a "suitable" stack size is chosen (usually 1-2MB).
*/
int coro_stack_alloc (struct coro_stack *stack, unsigned int size);
/*
* Free the stack allocated by coro_stack_alloc again. It is safe to
* call this function on the coro_stack structure even if coro_stack_alloc
* failed.
*/
void coro_stack_free (struct coro_stack *stack);
#endif
/*
* That was it. No other user-serviceable parts below here.
*/
/*****************************************************************************/
#if !defined CORO_LOSER && !defined CORO_UCONTEXT \
&& !defined CORO_SJLJ && !defined CORO_LINUX \
&& !defined CORO_IRIX && !defined CORO_ASM \
&& !defined CORO_PTHREAD && !defined CORO_FIBER
# if defined WINDOWS && (defined __i386__ || (__x86_64__ || defined _M_IX86 || defined _M_AMD64))
# define CORO_ASM 1
# elif defined WINDOWS || defined _WIN32
# define CORO_LOSER 1 /* you don't win with windoze */
# elif __linux && (__i386__ || (__x86_64__ && !__ILP32__) || (__arm__ && __ARCH_ARCH == 7))
# define CORO_ASM 1
# elif defined HAVE_UCONTEXT_H
# define CORO_UCONTEXT 1
# elif defined HAVE_SETJMP_H && defined HAVE_SIGALTSTACK
# define CORO_SJLJ 1
# else
error unknown or unsupported architecture
# endif
#endif
/*****************************************************************************/
#if CORO_UCONTEXT
# include <ucontext.h>
struct coro_context
{
ucontext_t uc;
};
# define coro_transfer(p,n) swapcontext (&((p)->uc), &((n)->uc))
# define coro_destroy(ctx) (void *)(ctx)
#elif CORO_SJLJ || CORO_LOSER || CORO_LINUX || CORO_IRIX
# if defined(CORO_LINUX) && !defined(_GNU_SOURCE)
# define _GNU_SOURCE /* for glibc */
# endif
# if !CORO_LOSER
# include <unistd.h>
# endif
/* solaris is hopelessly borked, it expands _XOPEN_UNIX to nothing */
# if __sun
# undef _XOPEN_UNIX
# define _XOPEN_UNIX 1
# endif
# include <setjmp.h>
# if _XOPEN_UNIX > 0 || defined (_setjmp)
# define coro_jmp_buf jmp_buf
# define coro_setjmp(env) _setjmp (env)
# define coro_longjmp(env) _longjmp ((env), 1)
# elif CORO_LOSER
# define coro_jmp_buf jmp_buf
# define coro_setjmp(env) setjmp (env)
# define coro_longjmp(env) longjmp ((env), 1)
# else
# define coro_jmp_buf sigjmp_buf
# define coro_setjmp(env) sigsetjmp (env, 0)
# define coro_longjmp(env) siglongjmp ((env), 1)
# endif
struct coro_context
{
coro_jmp_buf env;
};
# define coro_transfer(p,n) do { if (!coro_setjmp ((p)->env)) coro_longjmp ((n)->env); } while (0)
# define coro_destroy(ctx) (void *)(ctx)
#elif CORO_ASM
struct coro_context
{
void **sp; /* must be at offset 0 */
};
#if __i386__ || __x86_64__
void __attribute__ ((__noinline__, __regparm__(2)))
#else
void __attribute__ ((__noinline__))
#endif
coro_transfer (coro_context *prev, coro_context *next);
# define coro_destroy(ctx) (void *)(ctx)
#elif CORO_PTHREAD
# include <pthread.h>
extern pthread_mutex_t coro_mutex;
struct coro_context
{
pthread_cond_t cv;
pthread_t id;
};
void coro_transfer (coro_context *prev, coro_context *next);
void coro_destroy (coro_context *ctx);
#elif CORO_FIBER
struct coro_context
{
void *fiber;
/* only used for initialisation */
coro_func coro;
void *arg;
};
void coro_transfer (coro_context *prev, coro_context *next);
void coro_destroy (coro_context *ctx);
#endif
#if __cplusplus
}
#endif
#endif

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#ifndef __khrplatform_h_
#define __khrplatform_h_
/*
** Copyright (c) 2008-2018 The Khronos Group Inc.
**
** Permission is hereby granted, free of charge, to any person obtaining a
** copy of this software and/or associated documentation files (the
** "Materials"), to deal in the Materials without restriction, including
** without limitation the rights to use, copy, modify, merge, publish,
** distribute, sublicense, and/or sell copies of the Materials, and to
** permit persons to whom the Materials are furnished to do so, subject to
** the following conditions:
**
** The above copyright notice and this permission notice shall be included
** in all copies or substantial portions of the Materials.
**
** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
*/
/* Khronos platform-specific types and definitions.
*
* The master copy of khrplatform.h is maintained in the Khronos EGL
* Registry repository at https://github.com/KhronosGroup/EGL-Registry
* The last semantic modification to khrplatform.h was at commit ID:
* 67a3e0864c2d75ea5287b9f3d2eb74a745936692
*
* Adopters may modify this file to suit their platform. Adopters are
* encouraged to submit platform specific modifications to the Khronos
* group so that they can be included in future versions of this file.
* Please submit changes by filing pull requests or issues on
* the EGL Registry repository linked above.
*
*
* See the Implementer's Guidelines for information about where this file
* should be located on your system and for more details of its use:
* http://www.khronos.org/registry/implementers_guide.pdf
*
* This file should be included as
* #include <KHR/khrplatform.h>
* by Khronos client API header files that use its types and defines.
*
* The types in khrplatform.h should only be used to define API-specific types.
*
* Types defined in khrplatform.h:
* khronos_int8_t signed 8 bit
* khronos_uint8_t unsigned 8 bit
* khronos_int16_t signed 16 bit
* khronos_uint16_t unsigned 16 bit
* khronos_int32_t signed 32 bit
* khronos_uint32_t unsigned 32 bit
* khronos_int64_t signed 64 bit
* khronos_uint64_t unsigned 64 bit
* khronos_intptr_t signed same number of bits as a pointer
* khronos_uintptr_t unsigned same number of bits as a pointer
* khronos_ssize_t signed size
* khronos_usize_t unsigned size
* khronos_float_t signed 32 bit floating point
* khronos_time_ns_t unsigned 64 bit time in nanoseconds
* khronos_utime_nanoseconds_t unsigned time interval or absolute time in
* nanoseconds
* khronos_stime_nanoseconds_t signed time interval in nanoseconds
* khronos_boolean_enum_t enumerated boolean type. This should
* only be used as a base type when a client API's boolean type is
* an enum. Client APIs which use an integer or other type for
* booleans cannot use this as the base type for their boolean.
*
* Tokens defined in khrplatform.h:
*
* KHRONOS_FALSE, KHRONOS_TRUE Enumerated boolean false/true values.
*
* KHRONOS_SUPPORT_INT64 is 1 if 64 bit integers are supported; otherwise 0.
* KHRONOS_SUPPORT_FLOAT is 1 if floats are supported; otherwise 0.
*
* Calling convention macros defined in this file:
* KHRONOS_APICALL
* KHRONOS_APIENTRY
* KHRONOS_APIATTRIBUTES
*
* These may be used in function prototypes as:
*
* KHRONOS_APICALL void KHRONOS_APIENTRY funcname(
* int arg1,
* int arg2) KHRONOS_APIATTRIBUTES;
*/
/*-------------------------------------------------------------------------
* Definition of KHRONOS_APICALL
*-------------------------------------------------------------------------
* This precedes the return type of the function in the function prototype.
*/
#if defined(_WIN32) && !defined(__SCITECH_SNAP__)
# define KHRONOS_APICALL __declspec(dllimport)
#elif defined (__SYMBIAN32__)
# define KHRONOS_APICALL IMPORT_C
#elif defined(__ANDROID__)
# define KHRONOS_APICALL __attribute__((visibility("default")))
#else
# define KHRONOS_APICALL
#endif
/*-------------------------------------------------------------------------
* Definition of KHRONOS_APIENTRY
*-------------------------------------------------------------------------
* This follows the return type of the function and precedes the function
* name in the function prototype.
*/
#if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__SCITECH_SNAP__)
/* Win32 but not WinCE */
# define KHRONOS_APIENTRY __stdcall
#else
# define KHRONOS_APIENTRY
#endif
/*-------------------------------------------------------------------------
* Definition of KHRONOS_APIATTRIBUTES
*-------------------------------------------------------------------------
* This follows the closing parenthesis of the function prototype arguments.
*/
#if defined (__ARMCC_2__)
#define KHRONOS_APIATTRIBUTES __softfp
#else
#define KHRONOS_APIATTRIBUTES
#endif
/*-------------------------------------------------------------------------
* basic type definitions
*-----------------------------------------------------------------------*/
#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__GNUC__) || defined(__SCO__) || defined(__USLC__)
/*
* Using <stdint.h>
*/
#include <stdint.h>
typedef int32_t khronos_int32_t;
typedef uint32_t khronos_uint32_t;
typedef int64_t khronos_int64_t;
typedef uint64_t khronos_uint64_t;
#define KHRONOS_SUPPORT_INT64 1
#define KHRONOS_SUPPORT_FLOAT 1
#elif defined(__VMS ) || defined(__sgi)
/*
* Using <inttypes.h>
*/
#include <inttypes.h>
typedef int32_t khronos_int32_t;
typedef uint32_t khronos_uint32_t;
typedef int64_t khronos_int64_t;
typedef uint64_t khronos_uint64_t;
#define KHRONOS_SUPPORT_INT64 1
#define KHRONOS_SUPPORT_FLOAT 1
#elif defined(_WIN32) && !defined(__SCITECH_SNAP__)
/*
* Win32
*/
typedef __int32 khronos_int32_t;
typedef unsigned __int32 khronos_uint32_t;
typedef __int64 khronos_int64_t;
typedef unsigned __int64 khronos_uint64_t;
#define KHRONOS_SUPPORT_INT64 1
#define KHRONOS_SUPPORT_FLOAT 1
#elif defined(__sun__) || defined(__digital__)
/*
* Sun or Digital
*/
typedef int khronos_int32_t;
typedef unsigned int khronos_uint32_t;
#if defined(__arch64__) || defined(_LP64)
typedef long int khronos_int64_t;
typedef unsigned long int khronos_uint64_t;
#else
typedef long long int khronos_int64_t;
typedef unsigned long long int khronos_uint64_t;
#endif /* __arch64__ */
#define KHRONOS_SUPPORT_INT64 1
#define KHRONOS_SUPPORT_FLOAT 1
#elif 0
/*
* Hypothetical platform with no float or int64 support
*/
typedef int khronos_int32_t;
typedef unsigned int khronos_uint32_t;
#define KHRONOS_SUPPORT_INT64 0
#define KHRONOS_SUPPORT_FLOAT 0
#else
/*
* Generic fallback
*/
#include <stdint.h>
typedef int32_t khronos_int32_t;
typedef uint32_t khronos_uint32_t;
typedef int64_t khronos_int64_t;
typedef uint64_t khronos_uint64_t;
#define KHRONOS_SUPPORT_INT64 1
#define KHRONOS_SUPPORT_FLOAT 1
#endif
/*
* Types that are (so far) the same on all platforms
*/
typedef signed char khronos_int8_t;
typedef unsigned char khronos_uint8_t;
typedef signed short int khronos_int16_t;
typedef unsigned short int khronos_uint16_t;
/*
* Types that differ between LLP64 and LP64 architectures - in LLP64,
* pointers are 64 bits, but 'long' is still 32 bits. Win64 appears
* to be the only LLP64 architecture in current use.
*/
#ifdef _WIN64
typedef signed long long int khronos_intptr_t;
typedef unsigned long long int khronos_uintptr_t;
typedef signed long long int khronos_ssize_t;
typedef unsigned long long int khronos_usize_t;
#else
typedef signed long int khronos_intptr_t;
typedef unsigned long int khronos_uintptr_t;
typedef signed long int khronos_ssize_t;
typedef unsigned long int khronos_usize_t;
#endif
#if KHRONOS_SUPPORT_FLOAT
/*
* Float type
*/
typedef float khronos_float_t;
#endif
#if KHRONOS_SUPPORT_INT64
/* Time types
*
* These types can be used to represent a time interval in nanoseconds or
* an absolute Unadjusted System Time. Unadjusted System Time is the number
* of nanoseconds since some arbitrary system event (e.g. since the last
* time the system booted). The Unadjusted System Time is an unsigned
* 64 bit value that wraps back to 0 every 584 years. Time intervals
* may be either signed or unsigned.
*/
typedef khronos_uint64_t khronos_utime_nanoseconds_t;
typedef khronos_int64_t khronos_stime_nanoseconds_t;
#endif
/*
* Dummy value used to pad enum types to 32 bits.
*/
#ifndef KHRONOS_MAX_ENUM
#define KHRONOS_MAX_ENUM 0x7FFFFFFF
#endif
/*
* Enumerated boolean type
*
* Values other than zero should be considered to be true. Therefore
* comparisons should not be made against KHRONOS_TRUE.
*/
typedef enum {
KHRONOS_FALSE = 0,
KHRONOS_TRUE = 1,
KHRONOS_BOOLEAN_ENUM_FORCE_SIZE = KHRONOS_MAX_ENUM
} khronos_boolean_enum_t;
#endif /* __khrplatform_h_ */

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23
cs440-acg/ext/nanogui/ext/glfw/.appveyor.yml Normal file
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@@ -0,0 +1,23 @@
branches:
only:
- ci
- master
skip_tags: true
environment:
CFLAGS: /WX
matrix:
- BUILD_SHARED_LIBS: ON
- BUILD_SHARED_LIBS: OFF
matrix:
fast_finish: true
build_script:
- mkdir build
- cd build
- cmake -DCMAKE_VERBOSE_MAKEFILE=ON -DBUILD_SHARED_LIBS=%BUILD_SHARED_LIBS% ..
- cmake --build .
notifications:
- provider: Email
to:
- ci@glfw.org
on_build_failure: true
on_build_success: false

5
cs440-acg/ext/nanogui/ext/glfw/.gitattributes vendored Normal file
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*.m linguist-language=Objective-C
.gitignore export-ignore
.gitattributes export-ignore
.travis.yml export-ignore
.appveyor.yml export-ignore

89
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@@ -0,0 +1,89 @@
# External junk
.DS_Store
_ReSharper*
*.opensdf
*.sdf
*.suo
*.dir
*.vcxproj*
*.sln
.vs/
Win32
x64
Debug
Release
MinSizeRel
RelWithDebInfo
*.xcodeproj
# CMake files
Makefile
CMakeCache.txt
CMakeFiles
CMakeScripts
cmake_install.cmake
cmake_uninstall.cmake
# Generated files
docs/Doxyfile
docs/html
docs/warnings.txt
docs/doxygen_sqlite3.db
src/glfw_config.h
src/glfw3.pc
src/glfw3Config.cmake
src/glfw3ConfigVersion.cmake
src/wayland-pointer-constraints-unstable-v1-client-protocol.h
src/wayland-pointer-constraints-unstable-v1-protocol.c
src/wayland-relative-pointer-unstable-v1-client-protocol.h
src/wayland-relative-pointer-unstable-v1-protocol.c
# Compiled binaries
src/libglfw.so
src/libglfw.so.3
src/libglfw.so.3.3
src/libglfw.dylib
src/libglfw.dylib
src/libglfw.3.dylib
src/libglfw.3.3.dylib
src/libglfw3.a
src/glfw3.lib
src/glfw3.dll
src/glfw3dll.lib
src/libglfw3dll.a
examples/*.app
examples/*.exe
examples/boing
examples/gears
examples/heightmap
examples/offscreen
examples/particles
examples/splitview
examples/sharing
examples/simple
examples/wave
tests/*.app
tests/*.exe
tests/clipboard
tests/cursor
tests/empty
tests/events
tests/gamma
tests/glfwinfo
tests/icon
tests/iconify
tests/joysticks
tests/monitors
tests/msaa
tests/reopen
tests/tearing
tests/threads
tests/timeout
tests/title
tests/vulkan
tests/windows
# Ninja build system
.ninja_deps
.ninja_log
*.ninja

78
cs440-acg/ext/nanogui/ext/glfw/.travis.yml Normal file
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@@ -0,0 +1,78 @@
language: c
compiler: clang
branches:
only:
- ci
- master
sudo: false
dist: trusty
addons:
apt:
packages:
- cmake
- libxrandr-dev
- libxinerama-dev
- libxcursor-dev
- libxi-dev
matrix:
include:
- os: linux
env:
- BUILD_SHARED_LIBS=ON
- CFLAGS=-Werror
- os: linux
env:
- BUILD_SHARED_LIBS=OFF
- CFLAGS=-Werror
- os: linux
sudo: required
addons:
apt:
packages:
- libwayland-dev
- libxkbcommon-dev
- libegl1-mesa-dev
env:
- USE_WAYLAND=ON
- BUILD_SHARED_LIBS=ON
- CFLAGS=-Werror
- os: linux
sudo: required
addons:
apt:
packages:
- libwayland-dev
- libxkbcommon-dev
- libegl1-mesa-dev
env:
- USE_WAYLAND=ON
- BUILD_SHARED_LIBS=OFF
- CFLAGS=-Werror
- os: osx
env:
- BUILD_SHARED_LIBS=ON
- CFLAGS=-Werror
- os: osx
env:
- BUILD_SHARED_LIBS=OFF
- CFLAGS=-Werror
script:
- if grep -Inr '\s$' src include docs tests examples CMake *.md .gitattributes .gitignore; then echo Trailing whitespace found, aborting.; exit 1; fi
- mkdir build
- cd build
- if test -n "${USE_WAYLAND}";
then wget https://mirrors.kernel.org/ubuntu/pool/universe/e/extra-cmake-modules/extra-cmake-modules_5.38.0a-0ubuntu1_amd64.deb;
sudo dpkg -i extra-cmake-modules_5.38.0a-0ubuntu1_amd64.deb;
git clone git://anongit.freedesktop.org/wayland/wayland-protocols;
pushd wayland-protocols;
git checkout 1.15 && ./autogen.sh --prefix=/usr && make && sudo make install;
popd;
fi
- cmake -DCMAKE_VERBOSE_MAKEFILE=ON -DBUILD_SHARED_LIBS=${BUILD_SHARED_LIBS} -DGLFW_USE_WAYLAND=${USE_WAYLAND} ..
- cmake --build .
notifications:
email:
recipients:
- ci@glfw.org
on_success: never
on_failure: always

38
cs440-acg/ext/nanogui/ext/glfw/CMake/MacOSXBundleInfo.plist.in Normal file
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@@ -0,0 +1,38 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
<string>English</string>
<key>CFBundleExecutable</key>
<string>${MACOSX_BUNDLE_EXECUTABLE_NAME}</string>
<key>CFBundleGetInfoString</key>
<string>${MACOSX_BUNDLE_INFO_STRING}</string>
<key>CFBundleIconFile</key>
<string>${MACOSX_BUNDLE_ICON_FILE}</string>
<key>CFBundleIdentifier</key>
<string>${MACOSX_BUNDLE_GUI_IDENTIFIER}</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundleLongVersionString</key>
<string>${MACOSX_BUNDLE_LONG_VERSION_STRING}</string>
<key>CFBundleName</key>
<string>${MACOSX_BUNDLE_BUNDLE_NAME}</string>
<key>CFBundlePackageType</key>
<string>APPL</string>
<key>CFBundleShortVersionString</key>
<string>${MACOSX_BUNDLE_SHORT_VERSION_STRING}</string>
<key>CFBundleSignature</key>
<string>????</string>
<key>CFBundleVersion</key>
<string>${MACOSX_BUNDLE_BUNDLE_VERSION}</string>
<key>CSResourcesFileMapped</key>
<true/>
<key>LSRequiresCarbon</key>
<true/>
<key>NSHumanReadableCopyright</key>
<string>${MACOSX_BUNDLE_COPYRIGHT}</string>
<key>NSHighResolutionCapable</key>
<true/>
</dict>
</plist>

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cs440-acg/ext/nanogui/ext/glfw/CMakeLists.txt Normal file
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cmake_minimum_required (VERSION 3.13..3.18)
project(GLFW C)
set(CMAKE_LEGACY_CYGWIN_WIN32 OFF)
if (POLICY CMP0054)
cmake_policy(SET CMP0054 NEW)
endif()
if(POLICY CMP0022)
cmake_policy(SET CMP0022 NEW)
endif()
set(GLFW_VERSION_MAJOR "3")
set(GLFW_VERSION_MINOR "3")
set(GLFW_VERSION_PATCH "1")
set(GLFW_VERSION_EXTRA "")
set(GLFW_VERSION "${GLFW_VERSION_MAJOR}.${GLFW_VERSION_MINOR}")
set(GLFW_VERSION_FULL "${GLFW_VERSION}.${GLFW_VERSION_PATCH}${GLFW_VERSION_EXTRA}")
set_property(GLOBAL PROPERTY USE_FOLDERS ON)
option(BUILD_SHARED_LIBS "Build shared libraries" OFF)
option(GLFW_BUILD_EXAMPLES "Build the GLFW example programs" ON)
option(GLFW_BUILD_TESTS "Build the GLFW test programs" ON)
option(GLFW_BUILD_DOCS "Build the GLFW documentation" ON)
option(GLFW_INSTALL "Generate installation target" ON)
option(GLFW_VULKAN_STATIC "Assume the Vulkan loader is linked with the application" OFF)
include(GNUInstallDirs)
if (UNIX)
option(GLFW_USE_OSMESA "Use OSMesa for offscreen context creation" OFF)
endif()
if (WIN32)
option(GLFW_USE_HYBRID_HPG "Force use of high-performance GPU on hybrid systems" OFF)
endif()
if (UNIX AND NOT APPLE)
option(GLFW_USE_WAYLAND "Use Wayland for window creation" OFF)
endif()
if (MSVC)
option(USE_MSVC_RUNTIME_LIBRARY_DLL "Use MSVC runtime library DLL" ON)
endif()
if (BUILD_SHARED_LIBS)
set(_GLFW_BUILD_DLL 1)
endif()
if (BUILD_SHARED_LIBS AND UNIX)
# On Unix-like systems, shared libraries can use the soname system.
set(GLFW_LIB_NAME glfw)
else()
set(GLFW_LIB_NAME glfw3)
endif()
if (GLFW_VULKAN_STATIC)
if (BUILD_SHARED_LIBS)
# If you absolutely must do this, remove this line and add the Vulkan
# loader static library via the CMAKE_SHARED_LINKER_FLAGS
message(FATAL_ERROR "You are trying to link the Vulkan loader static library into the GLFW shared library")
endif()
set(_GLFW_VULKAN_STATIC 1)
endif()
list(APPEND CMAKE_MODULE_PATH "${GLFW_SOURCE_DIR}/CMake/modules")
if (GLFW_BUILD_DOCS)
set(DOXYGEN_SKIP_DOT TRUE)
find_package(Doxygen)
endif()
#--------------------------------------------------------------------
# Set compiler specific flags
#--------------------------------------------------------------------
if (MSVC)
if (MSVC90)
# Workaround for VS 2008 not shipping with the DirectX 9 SDK
include(CheckIncludeFile)
check_include_file(dinput.h DINPUT_H_FOUND)
if (NOT DINPUT_H_FOUND)
message(FATAL_ERROR "DirectX 9 SDK not found")
endif()
# Workaround for VS 2008 not shipping with stdint.h
list(APPEND glfw_INCLUDE_DIRS "${GLFW_SOURCE_DIR}/deps/vs2008")
endif()
if (NOT USE_MSVC_RUNTIME_LIBRARY_DLL)
foreach (flag CMAKE_C_FLAGS
CMAKE_C_FLAGS_DEBUG
CMAKE_C_FLAGS_RELEASE
CMAKE_C_FLAGS_MINSIZEREL
CMAKE_C_FLAGS_RELWITHDEBINFO)
if (${flag} MATCHES "/MD")
string(REGEX REPLACE "/MD" "/MT" ${flag} "${${flag}}")
endif()
if (${flag} MATCHES "/MDd")
string(REGEX REPLACE "/MDd" "/MTd" ${flag} "${${flag}}")
endif()
endforeach()
endif()
endif()
if (MINGW)
# Workaround for legacy MinGW not providing XInput and DirectInput
include(CheckIncludeFile)
check_include_file(dinput.h DINPUT_H_FOUND)
check_include_file(xinput.h XINPUT_H_FOUND)
if (NOT DINPUT_H_FOUND OR NOT XINPUT_H_FOUND)
list(APPEND glfw_INCLUDE_DIRS "${GLFW_SOURCE_DIR}/deps/mingw")
endif()
# Enable link-time exploit mitigation features enabled by default on MSVC
include(CheckCCompilerFlag)
# Compatibility with data execution prevention (DEP)
set(CMAKE_REQUIRED_FLAGS "-Wl,--nxcompat")
check_c_compiler_flag("" _GLFW_HAS_DEP)
if (_GLFW_HAS_DEP)
set(CMAKE_SHARED_LINKER_FLAGS "-Wl,--nxcompat ${CMAKE_SHARED_LINKER_FLAGS}")
endif()
# Compatibility with address space layout randomization (ASLR)
set(CMAKE_REQUIRED_FLAGS "-Wl,--dynamicbase")
check_c_compiler_flag("" _GLFW_HAS_ASLR)
if (_GLFW_HAS_ASLR)
set(CMAKE_SHARED_LINKER_FLAGS "-Wl,--dynamicbase ${CMAKE_SHARED_LINKER_FLAGS}")
endif()
# Compatibility with 64-bit address space layout randomization (ASLR)
set(CMAKE_REQUIRED_FLAGS "-Wl,--high-entropy-va")
check_c_compiler_flag("" _GLFW_HAS_64ASLR)
if (_GLFW_HAS_64ASLR)
set(CMAKE_SHARED_LINKER_FLAGS "-Wl,--high-entropy-va ${CMAKE_SHARED_LINKER_FLAGS}")
endif()
endif()
#--------------------------------------------------------------------
# Detect and select backend APIs
#--------------------------------------------------------------------
if (GLFW_USE_WAYLAND)
set(_GLFW_WAYLAND 1)
message(STATUS "Using Wayland for window creation")
elseif (GLFW_USE_OSMESA)
set(_GLFW_OSMESA 1)
message(STATUS "Using OSMesa for headless context creation")
elseif (WIN32)
set(_GLFW_WIN32 1)
message(STATUS "Using Win32 for window creation")
elseif (APPLE)
set(_GLFW_COCOA 1)
message(STATUS "Using Cocoa for window creation")
elseif (UNIX)
set(_GLFW_X11 1)
message(STATUS "Using X11 for window creation")
else()
message(FATAL_ERROR "No supported platform was detected")
endif()
#--------------------------------------------------------------------
# Find and add Unix math and time libraries
#--------------------------------------------------------------------
if (UNIX AND NOT APPLE)
find_library(RT_LIBRARY rt)
mark_as_advanced(RT_LIBRARY)
if (RT_LIBRARY)
list(APPEND glfw_LIBRARIES "${RT_LIBRARY}")
list(APPEND glfw_PKG_LIBS "-lrt")
endif()
find_library(MATH_LIBRARY m)
mark_as_advanced(MATH_LIBRARY)
if (MATH_LIBRARY)
list(APPEND glfw_LIBRARIES "${MATH_LIBRARY}")
list(APPEND glfw_PKG_LIBS "-lm")
endif()
if (CMAKE_DL_LIBS)
list(APPEND glfw_LIBRARIES "${CMAKE_DL_LIBS}")
list(APPEND glfw_PKG_LIBS "-l${CMAKE_DL_LIBS}")
endif()
endif()
#--------------------------------------------------------------------
# Use Win32 for window creation
#--------------------------------------------------------------------
if (_GLFW_WIN32)
list(APPEND glfw_PKG_LIBS "-lgdi32")
if (GLFW_USE_HYBRID_HPG)
set(_GLFW_USE_HYBRID_HPG 1)
endif()
endif()
#--------------------------------------------------------------------
# Use X11 for window creation
#--------------------------------------------------------------------
if (_GLFW_X11)
find_package(X11 REQUIRED)
list(APPEND glfw_PKG_DEPS "x11")
# Set up library and include paths
list(APPEND glfw_INCLUDE_DIRS "${X11_X11_INCLUDE_PATH}")
list(APPEND glfw_LIBRARIES "${X11_X11_LIB}" "${CMAKE_THREAD_LIBS_INIT}")
# Check for XRandR (modern resolution switching and gamma control)
if (NOT X11_Xrandr_FOUND)
message(FATAL_ERROR "The RandR headers were not found")
endif()
# Check for Xinerama (legacy multi-monitor support)
if (NOT X11_Xinerama_FOUND)
message(FATAL_ERROR "The Xinerama headers were not found")
endif()
# Check for Xkb (X keyboard extension)
if (NOT X11_Xkb_FOUND)
message(FATAL_ERROR "The X keyboard extension headers were not found")
endif()
# Check for Xcursor (cursor creation from RGBA images)
if (NOT X11_Xcursor_FOUND)
message(FATAL_ERROR "The Xcursor headers were not found")
endif()
list(APPEND glfw_INCLUDE_DIRS "${X11_Xrandr_INCLUDE_PATH}"
"${X11_Xinerama_INCLUDE_PATH}"
"${X11_Xkb_INCLUDE_PATH}"
"${X11_Xcursor_INCLUDE_PATH}")
endif()
#--------------------------------------------------------------------
# Use Wayland for window creation
#--------------------------------------------------------------------
if (_GLFW_WAYLAND)
find_package(ECM REQUIRED NO_MODULE)
list(APPEND CMAKE_MODULE_PATH "${ECM_MODULE_PATH}")
find_package(Wayland REQUIRED Client Cursor Egl)
find_package(WaylandScanner REQUIRED)
find_package(WaylandProtocols 1.15 REQUIRED)
list(APPEND glfw_PKG_DEPS "wayland-egl")
list(APPEND glfw_INCLUDE_DIRS "${Wayland_INCLUDE_DIRS}")
list(APPEND glfw_LIBRARIES "${Wayland_LIBRARIES}" "${CMAKE_THREAD_LIBS_INIT}")
find_package(XKBCommon REQUIRED)
list(APPEND glfw_INCLUDE_DIRS "${XKBCOMMON_INCLUDE_DIRS}")
include(CheckIncludeFiles)
include(CheckFunctionExists)
check_include_files(xkbcommon/xkbcommon-compose.h HAVE_XKBCOMMON_COMPOSE_H)
check_function_exists(memfd_create HAVE_MEMFD_CREATE)
if (NOT ("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux"))
find_package(EpollShim)
if (EPOLLSHIM_FOUND)
list(APPEND glfw_INCLUDE_DIRS "${EPOLLSHIM_INCLUDE_DIRS}")
list(APPEND glfw_LIBRARIES "${EPOLLSHIM_LIBRARIES}")
endif()
endif()
endif()
#--------------------------------------------------------------------
# Use OSMesa for offscreen context creation
#--------------------------------------------------------------------
if (_GLFW_OSMESA)
find_package(OSMesa REQUIRED)
list(APPEND glfw_LIBRARIES "${CMAKE_THREAD_LIBS_INIT}")
endif()
#--------------------------------------------------------------------
# Use Cocoa for window creation and NSOpenGL for context creation
#--------------------------------------------------------------------
if (_GLFW_COCOA)
list(APPEND glfw_LIBRARIES
"-framework Cocoa"
"-framework IOKit"
"-framework CoreFoundation"
"-framework CoreVideo")
set(glfw_PKG_DEPS "")
set(glfw_PKG_LIBS "-framework Cocoa -framework IOKit -framework CoreFoundation -framework CoreVideo")
endif()
#--------------------------------------------------------------------
# Add the Vulkan loader as a dependency if necessary
#--------------------------------------------------------------------
if (GLFW_VULKAN_STATIC)
list(APPEND glfw_PKG_DEPS "vulkan")
endif()
#--------------------------------------------------------------------
# Export GLFW library dependencies
#--------------------------------------------------------------------
foreach(arg ${glfw_PKG_DEPS})
set(GLFW_PKG_DEPS "${GLFW_PKG_DEPS} ${arg}")
endforeach()
foreach(arg ${glfw_PKG_LIBS})
set(GLFW_PKG_LIBS "${GLFW_PKG_LIBS} ${arg}")
endforeach()
#--------------------------------------------------------------------
# Create generated files
#--------------------------------------------------------------------
include(CMakePackageConfigHelpers)
set(GLFW_CONFIG_PATH "${CMAKE_INSTALL_LIBDIR}/cmake/glfw3")
configure_package_config_file(src/glfw3Config.cmake.in
src/glfw3Config.cmake
INSTALL_DESTINATION "${GLFW_CONFIG_PATH}"
NO_CHECK_REQUIRED_COMPONENTS_MACRO)
write_basic_package_version_file(src/glfw3ConfigVersion.cmake
VERSION ${GLFW_VERSION_FULL}
COMPATIBILITY SameMajorVersion)
configure_file(src/glfw_config.h.in src/glfw_config.h @ONLY)
configure_file(src/glfw3.pc.in src/glfw3.pc @ONLY)
#--------------------------------------------------------------------
# Add subdirectories
#--------------------------------------------------------------------
add_subdirectory(src)
if (GLFW_BUILD_EXAMPLES)
add_subdirectory(examples)
endif()
if (GLFW_BUILD_TESTS)
add_subdirectory(tests)
endif()
if (DOXYGEN_FOUND AND GLFW_BUILD_DOCS)
add_subdirectory(docs)
endif()
#--------------------------------------------------------------------
# Install files other than the library
# The library is installed by src/CMakeLists.txt
#--------------------------------------------------------------------
if (GLFW_INSTALL)
install(DIRECTORY include/GLFW DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
FILES_MATCHING PATTERN glfw3.h PATTERN glfw3native.h)
install(FILES "${GLFW_BINARY_DIR}/src/glfw3Config.cmake"
"${GLFW_BINARY_DIR}/src/glfw3ConfigVersion.cmake"
DESTINATION "${GLFW_CONFIG_PATH}")
install(EXPORT glfwTargets FILE glfw3Targets.cmake
EXPORT_LINK_INTERFACE_LIBRARIES
DESTINATION "${GLFW_CONFIG_PATH}")
install(FILES "${GLFW_BINARY_DIR}/src/glfw3.pc"
DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
# Only generate this target if no higher-level project already has
if (NOT TARGET uninstall)
configure_file(cmake_uninstall.cmake.in
cmake_uninstall.cmake IMMEDIATE @ONLY)
add_custom_target(uninstall
"${CMAKE_COMMAND}" -P
"${GLFW_BINARY_DIR}/cmake_uninstall.cmake")
set_target_properties(uninstall PROPERTIES FOLDER "GLFW3")
endif()
endif()

22
cs440-acg/ext/nanogui/ext/glfw/LICENSE.md Normal file
View File

@@ -0,0 +1,22 @@
Copyright (c) 2002-2006 Marcus Geelnard
Copyright (c) 2006-2016 Camilla Löwy <elmindreda@glfw.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would
be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not
be misrepresented as being the original software.
3. This notice may not be removed or altered from any source
distribution.

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# GLFW
[![Build status](https://travis-ci.org/glfw/glfw.svg?branch=master)](https://travis-ci.org/glfw/glfw)
[![Build status](https://ci.appveyor.com/api/projects/status/0kf0ct9831i5l6sp/branch/master?svg=true)](https://ci.appveyor.com/project/elmindreda/glfw)
[![Coverity Scan](https://scan.coverity.com/projects/4884/badge.svg)](https://scan.coverity.com/projects/glfw-glfw)
## Introduction
GLFW is an Open Source, multi-platform library for OpenGL, OpenGL ES and Vulkan
application development. It provides a simple, platform-independent API for
creating windows, contexts and surfaces, reading input, handling events, etc.
GLFW natively supports Windows, macOS and Linux and other Unix-like systems. On
Linux both X11 and Wayland is supported.
GLFW is licensed under the [zlib/libpng
license](http://www.glfw.org/license.html).
You can [download](http://www.glfw.org/download.html) the latest stable release
as source or Windows binaries, or fetch the `latest` branch from GitHub. Each
release starting with 3.0 also has a corresponding [annotated
tag](https://github.com/glfw/glfw/releases) with source and binary archives.
The [documentation](http://www.glfw.org/docs/latest/) is available online and is
included in all source and binary archives. See the [release
notes](https://www.glfw.org/docs/latest/news.html) for new features, caveats and
deprecations in the latest release. For more details see the [version
history](http://www.glfw.org/changelog.html).
The `master` branch is the stable integration branch and _should_ always compile
and run on all supported platforms, although details of newly added features may
change until they have been included in a release. New features and many bug
fixes live in [other branches](https://github.com/glfw/glfw/branches/all) until
they are stable enough to merge.
If you are new to GLFW, you may find the
[tutorial](http://www.glfw.org/docs/latest/quick.html) for GLFW 3 useful. If
you have used GLFW 2 in the past, there is a [transition
guide](http://www.glfw.org/docs/latest/moving.html) for moving to the GLFW
3 API.
## Compiling GLFW
GLFW itself requires only the headers and libraries for your OS and window
system. It does not need the headers for any context creation API (WGL, GLX,
EGL, NSGL, OSMesa) or rendering API (OpenGL, OpenGL ES, Vulkan) to enable
support for them.
GLFW supports compilation on Windows with Visual C++ 2010 and later, MinGW and
MinGW-w64, on macOS with Clang and on Linux and other Unix-like systems with GCC
and Clang. It will likely compile in other environments as well, but this is
not regularly tested.
There are [pre-compiled Windows binaries](http://www.glfw.org/download.html)
available for all supported compilers.
See the [compilation guide](http://www.glfw.org/docs/latest/compile.html) for
more information about how to compile GLFW yourself.
## Using GLFW
See the [documentation](http://www.glfw.org/docs/latest/) for tutorials, guides
and the API reference.
## Contributing to GLFW
See the [contribution
guide](https://github.com/glfw/glfw/blob/master/docs/CONTRIBUTING.md) for
more information.
## System requirements
GLFW supports Windows XP and later and macOS 10.8 and later. Linux and other
Unix-like systems running the X Window System are supported even without
a desktop environment or modern extensions, although some features require
a running window or clipboard manager. The OSMesa backend requires Mesa 6.3.
See the [compatibility guide](http://www.glfw.org/docs/latest/compat.html)
in the documentation for more information.
## Dependencies
GLFW itself depends only on the headers and libraries for your window system.
The (experimental) Wayland backend also depends on the `extra-cmake-modules`
package, which is used to generated Wayland protocol headers.
The examples and test programs depend on a number of tiny libraries. These are
located in the `deps/` directory.
- [getopt\_port](https://github.com/kimgr/getopt_port/) for examples
with command-line options
- [TinyCThread](https://github.com/tinycthread/tinycthread) for threaded
examples
- [glad2](https://github.com/Dav1dde/glad) for loading OpenGL and Vulkan
functions
- [linmath.h](https://github.com/datenwolf/linmath.h) for linear algebra in
examples
- [Nuklear](https://github.com/vurtun/nuklear) for test and example UI
- [stb\_image\_write](https://github.com/nothings/stb) for writing images to disk
The documentation is generated with [Doxygen](http://doxygen.org/) if CMake can
find that tool.
## Reporting bugs
Bugs are reported to our [issue tracker](https://github.com/glfw/glfw/issues).
Please check the [contribution
guide](https://github.com/glfw/glfw/blob/master/docs/CONTRIBUTING.md) for
information on what to include when reporting a bug.
## Changelog
User-visible changes since the last release.
## Contact
On [glfw.org](http://www.glfw.org/) you can find the latest version of GLFW, as
well as news, documentation and other information about the project.
If you have questions related to the use of GLFW, we have a
[forum](http://discourse.glfw.org/), and the `#glfw` IRC channel on
[Freenode](http://freenode.net/).
If you have a bug to report, a patch to submit or a feature you'd like to
request, please file it in the
[issue tracker](https://github.com/glfw/glfw/issues) on GitHub.
Finally, if you're interested in helping out with the development of GLFW or
porting it to your favorite platform, join us on the forum, GitHub or IRC.
## Acknowledgements
GLFW exists because people around the world donated their time and lent their
skills.
- Bobyshev Alexander
- Matt Arsenault
- David Avedissian
- Keith Bauer
- John Bartholomew
- Coşku Baş
- Niklas Behrens
- Andrew Belt
- Niklas Bergström
- Denis Bernard
- Doug Binks
- blanco
- Kyle Brenneman
- Rok Breulj
- Martin Capitanio
- David Carlier
- Arturo Castro
- Chi-kwan Chan
- Ian Clarkson
- Michał Cichoń
- Lambert Clara
- Anna Clarke
- Yaron Cohen-Tal
- Omar Cornut
- Andrew Corrigan
- Bailey Cosier
- Noel Cower
- Jason Daly
- Jarrod Davis
- Olivier Delannoy
- Paul R. Deppe
- Michael Dickens
- Роман Донченко
- Mario Dorn
- Wolfgang Draxinger
- Jonathan Dummer
- Ralph Eastwood
- Fredrik Ehnbom
- Robin Eklind
- Siavash Eliasi
- Felipe Ferreira
- Michael Fogleman
- Gerald Franz
- Mário Freitas
- GeO4d
- Marcus Geelnard
- Stephen Gowen
- Kovid Goyal
- Eloi Marín Gratacós
- Stefan Gustavson
- Jonathan Hale
- Sylvain Hellegouarch
- Matthew Henry
- heromyth
- Lucas Hinderberger
- Paul Holden
- Warren Hu
- IntellectualKitty
- Aaron Jacobs
- Erik S. V. Jansson
- Toni Jovanoski
- Arseny Kapoulkine
- Cem Karan
- Osman Keskin
- Josh Kilmer
- Cameron King
- Peter Knut
- Christoph Kubisch
- Yuri Kunde Schlesner
- Konstantin Käfer
- Eric Larson
- Robin Leffmann
- Glenn Lewis
- Shane Liesegang
- Eyal Lotem
- Aaron Loucks
- Tristam MacDonald
- Hans Mackowiak
- Дмитри Малышев
- Zbigniew Mandziejewicz
- Adam Marcus
- Célestin Marot
- Kyle McDonald
- David Medlock
- Bryce Mehring
- Jonathan Mercier
- Marcel Metz
- Liam Middlebrook
- Jonathan Miller
- Kenneth Miller
- Bruce Mitchener
- Jack Moffitt
- Jeff Molofee
- Alexander Monakov
- Pierre Morel
- Jon Morton
- Pierre Moulon
- Martins Mozeiko
- Julian Møller
- ndogxj
- Kristian Nielsen
- Kamil Nowakowski
- Denis Ovod
- Ozzy
- Andri Pálsson
- Peoro
- Braden Pellett
- Christopher Pelloux
- Arturo J. Pérez
- Anthony Pesch
- Orson Peters
- Emmanuel Gil Peyrot
- Cyril Pichard
- Keith Pitt
- Stanislav Podgorskiy
- Nathan Poirier
- Alexandre Pretyman
- przemekmirek
- Philip Rideout
- Eddie Ringle
- Max Risuhin
- Jorge Rodriguez
- Ed Ropple
- Aleksey Rybalkin
- Riku Salminen
- Brandon Schaefer
- Sebastian Schuberth
- Christian Sdunek
- Matt Sealey
- Steve Sexton
- Arkady Shapkin
- Yoshiki Shibukawa
- Dmitri Shuralyov
- Daniel Skorupski
- Bradley Smith
- Cliff Smolinsky
- Patrick Snape
- Erlend Sogge Heggen
- Julian Squires
- Johannes Stein
- Pontus Stenetorp
- Michael Stocker
- Justin Stoecker
- Elviss Strazdins
- Paul Sultana
- Nathan Sweet
- TTK-Bandit
- Sergey Tikhomirov
- Arthur Tombs
- Ioannis Tsakpinis
- Samuli Tuomola
- Matthew Turner
- urraka
- Elias Vanderstuyft
- Stef Velzel
- Jari Vetoniemi
- Ricardo Vieira
- Nicholas Vitovitch
- Simon Voordouw
- Corentin Wallez
- Torsten Walluhn
- Patrick Walton
- Xo Wang
- Jay Weisskopf
- Frank Wille
- Ryogo Yoshimura
- Andrey Zholos
- Santi Zupancic
- Jonas Ådahl
- Lasse Öörni
- All the unmentioned and anonymous contributors in the GLFW community, for bug
reports, patches, feedback, testing and encouragement

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if (NOT EXISTS "@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt")
message(FATAL_ERROR "Cannot find install manifest: \"@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt\"")
endif()
file(READ "@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt" files)
string(REGEX REPLACE "\n" ";" files "${files}")
foreach (file ${files})
message(STATUS "Uninstalling \"$ENV{DESTDIR}${file}\"")
if (EXISTS "$ENV{DESTDIR}${file}")
exec_program("@CMAKE_COMMAND@" ARGS "-E remove \"$ENV{DESTDIR}${file}\""
OUTPUT_VARIABLE rm_out
RETURN_VALUE rm_retval)
if (NOT "${rm_retval}" STREQUAL 0)
MESSAGE(FATAL_ERROR "Problem when removing \"$ENV{DESTDIR}${file}\"")
endif()
elseif (IS_SYMLINK "$ENV{DESTDIR}${file}")
EXEC_PROGRAM("@CMAKE_COMMAND@" ARGS "-E remove \"$ENV{DESTDIR}${file}\""
OUTPUT_VARIABLE rm_out
RETURN_VALUE rm_retval)
if (NOT "${rm_retval}" STREQUAL 0)
message(FATAL_ERROR "Problem when removing symlink \"$ENV{DESTDIR}${file}\"")
endif()
else()
message(STATUS "File \"$ENV{DESTDIR}${file}\" does not exist.")
endif()
endforeach()

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/* Copyright (c) 2012, Kim Gräsman
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Kim Gräsman nor the names of contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL KIM GRÄSMAN BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "getopt.h"
#include <stddef.h>
#include <string.h>
const int no_argument = 0;
const int required_argument = 1;
const int optional_argument = 2;
char* optarg;
int optopt;
/* The variable optind [...] shall be initialized to 1 by the system. */
int optind = 1;
int opterr;
static char* optcursor = NULL;
/* Implemented based on [1] and [2] for optional arguments.
optopt is handled FreeBSD-style, per [3].
Other GNU and FreeBSD extensions are purely accidental.
[1] http://pubs.opengroup.org/onlinepubs/000095399/functions/getopt.html
[2] http://www.kernel.org/doc/man-pages/online/pages/man3/getopt.3.html
[3] http://www.freebsd.org/cgi/man.cgi?query=getopt&sektion=3&manpath=FreeBSD+9.0-RELEASE
*/
int getopt(int argc, char* const argv[], const char* optstring) {
int optchar = -1;
const char* optdecl = NULL;
optarg = NULL;
opterr = 0;
optopt = 0;
/* Unspecified, but we need it to avoid overrunning the argv bounds. */
if (optind >= argc)
goto no_more_optchars;
/* If, when getopt() is called argv[optind] is a null pointer, getopt()
shall return -1 without changing optind. */
if (argv[optind] == NULL)
goto no_more_optchars;
/* If, when getopt() is called *argv[optind] is not the character '-',
getopt() shall return -1 without changing optind. */
if (*argv[optind] != '-')
goto no_more_optchars;
/* If, when getopt() is called argv[optind] points to the string "-",
getopt() shall return -1 without changing optind. */
if (strcmp(argv[optind], "-") == 0)
goto no_more_optchars;
/* If, when getopt() is called argv[optind] points to the string "--",
getopt() shall return -1 after incrementing optind. */
if (strcmp(argv[optind], "--") == 0) {
++optind;
goto no_more_optchars;
}
if (optcursor == NULL || *optcursor == '\0')
optcursor = argv[optind] + 1;
optchar = *optcursor;
/* FreeBSD: The variable optopt saves the last known option character
returned by getopt(). */
optopt = optchar;
/* The getopt() function shall return the next option character (if one is
found) from argv that matches a character in optstring, if there is
one that matches. */
optdecl = strchr(optstring, optchar);
if (optdecl) {
/* [I]f a character is followed by a colon, the option takes an
argument. */
if (optdecl[1] == ':') {
optarg = ++optcursor;
if (*optarg == '\0') {
/* GNU extension: Two colons mean an option takes an
optional arg; if there is text in the current argv-element
(i.e., in the same word as the option name itself, for example,
"-oarg"), then it is returned in optarg, otherwise optarg is set
to zero. */
if (optdecl[2] != ':') {
/* If the option was the last character in the string pointed to by
an element of argv, then optarg shall contain the next element
of argv, and optind shall be incremented by 2. If the resulting
value of optind is greater than argc, this indicates a missing
option-argument, and getopt() shall return an error indication.
Otherwise, optarg shall point to the string following the
option character in that element of argv, and optind shall be
incremented by 1.
*/
if (++optind < argc) {
optarg = argv[optind];
} else {
/* If it detects a missing option-argument, it shall return the
colon character ( ':' ) if the first character of optstring
was a colon, or a question-mark character ( '?' ) otherwise.
*/
optarg = NULL;
optchar = (optstring[0] == ':') ? ':' : '?';
}
} else {
optarg = NULL;
}
}
optcursor = NULL;
}
} else {
/* If getopt() encounters an option character that is not contained in
optstring, it shall return the question-mark ( '?' ) character. */
optchar = '?';
}
if (optcursor == NULL || *++optcursor == '\0')
++optind;
return optchar;
no_more_optchars:
optcursor = NULL;
return -1;
}
/* Implementation based on [1].
[1] http://www.kernel.org/doc/man-pages/online/pages/man3/getopt.3.html
*/
int getopt_long(int argc, char* const argv[], const char* optstring,
const struct option* longopts, int* longindex) {
const struct option* o = longopts;
const struct option* match = NULL;
int num_matches = 0;
size_t argument_name_length = 0;
const char* current_argument = NULL;
int retval = -1;
optarg = NULL;
optopt = 0;
if (optind >= argc)
return -1;
if (strlen(argv[optind]) < 3 || strncmp(argv[optind], "--", 2) != 0)
return getopt(argc, argv, optstring);
/* It's an option; starts with -- and is longer than two chars. */
current_argument = argv[optind] + 2;
argument_name_length = strcspn(current_argument, "=");
for (; o->name; ++o) {
if (strncmp(o->name, current_argument, argument_name_length) == 0) {
match = o;
++num_matches;
}
}
if (num_matches == 1) {
/* If longindex is not NULL, it points to a variable which is set to the
index of the long option relative to longopts. */
if (longindex)
*longindex = (int) (match - longopts);
/* If flag is NULL, then getopt_long() shall return val.
Otherwise, getopt_long() returns 0, and flag shall point to a variable
which shall be set to val if the option is found, but left unchanged if
the option is not found. */
if (match->flag)
*(match->flag) = match->val;
retval = match->flag ? 0 : match->val;
if (match->has_arg != no_argument) {
optarg = strchr(argv[optind], '=');
if (optarg != NULL)
++optarg;
if (match->has_arg == required_argument) {
/* Only scan the next argv for required arguments. Behavior is not
specified, but has been observed with Ubuntu and Mac OSX. */
if (optarg == NULL && ++optind < argc) {
optarg = argv[optind];
}
if (optarg == NULL)
retval = ':';
}
} else if (strchr(argv[optind], '=')) {
/* An argument was provided to a non-argument option.
I haven't seen this specified explicitly, but both GNU and BSD-based
implementations show this behavior.
*/
retval = '?';
}
} else {
/* Unknown option or ambiguous match. */
retval = '?';
}
++optind;
return retval;
}

57
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/* Copyright (c) 2012, Kim Gräsman
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Kim Gräsman nor the names of contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL KIM GRÄSMAN BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef INCLUDED_GETOPT_PORT_H
#define INCLUDED_GETOPT_PORT_H
#if defined(__cplusplus)
extern "C" {
#endif
extern const int no_argument;
extern const int required_argument;
extern const int optional_argument;
extern char* optarg;
extern int optind, opterr, optopt;
struct option {
const char* name;
int has_arg;
int* flag;
int val;
};
int getopt(int argc, char* const argv[], const char* optstring);
int getopt_long(int argc, char* const argv[],
const char* optstring, const struct option* longopts, int* longindex);
#if defined(__cplusplus)
}
#endif
#endif // INCLUDED_GETOPT_PORT_H

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282
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#ifndef __khrplatform_h_
#define __khrplatform_h_
/*
** Copyright (c) 2008-2018 The Khronos Group Inc.
**
** Permission is hereby granted, free of charge, to any person obtaining a
** copy of this software and/or associated documentation files (the
** "Materials"), to deal in the Materials without restriction, including
** without limitation the rights to use, copy, modify, merge, publish,
** distribute, sublicense, and/or sell copies of the Materials, and to
** permit persons to whom the Materials are furnished to do so, subject to
** the following conditions:
**
** The above copyright notice and this permission notice shall be included
** in all copies or substantial portions of the Materials.
**
** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
*/
/* Khronos platform-specific types and definitions.
*
* The master copy of khrplatform.h is maintained in the Khronos EGL
* Registry repository at https://github.com/KhronosGroup/EGL-Registry
* The last semantic modification to khrplatform.h was at commit ID:
* 67a3e0864c2d75ea5287b9f3d2eb74a745936692
*
* Adopters may modify this file to suit their platform. Adopters are
* encouraged to submit platform specific modifications to the Khronos
* group so that they can be included in future versions of this file.
* Please submit changes by filing pull requests or issues on
* the EGL Registry repository linked above.
*
*
* See the Implementer's Guidelines for information about where this file
* should be located on your system and for more details of its use:
* http://www.khronos.org/registry/implementers_guide.pdf
*
* This file should be included as
* #include <KHR/khrplatform.h>
* by Khronos client API header files that use its types and defines.
*
* The types in khrplatform.h should only be used to define API-specific types.
*
* Types defined in khrplatform.h:
* khronos_int8_t signed 8 bit
* khronos_uint8_t unsigned 8 bit
* khronos_int16_t signed 16 bit
* khronos_uint16_t unsigned 16 bit
* khronos_int32_t signed 32 bit
* khronos_uint32_t unsigned 32 bit
* khronos_int64_t signed 64 bit
* khronos_uint64_t unsigned 64 bit
* khronos_intptr_t signed same number of bits as a pointer
* khronos_uintptr_t unsigned same number of bits as a pointer
* khronos_ssize_t signed size
* khronos_usize_t unsigned size
* khronos_float_t signed 32 bit floating point
* khronos_time_ns_t unsigned 64 bit time in nanoseconds
* khronos_utime_nanoseconds_t unsigned time interval or absolute time in
* nanoseconds
* khronos_stime_nanoseconds_t signed time interval in nanoseconds
* khronos_boolean_enum_t enumerated boolean type. This should
* only be used as a base type when a client API's boolean type is
* an enum. Client APIs which use an integer or other type for
* booleans cannot use this as the base type for their boolean.
*
* Tokens defined in khrplatform.h:
*
* KHRONOS_FALSE, KHRONOS_TRUE Enumerated boolean false/true values.
*
* KHRONOS_SUPPORT_INT64 is 1 if 64 bit integers are supported; otherwise 0.
* KHRONOS_SUPPORT_FLOAT is 1 if floats are supported; otherwise 0.
*
* Calling convention macros defined in this file:
* KHRONOS_APICALL
* KHRONOS_APIENTRY
* KHRONOS_APIATTRIBUTES
*
* These may be used in function prototypes as:
*
* KHRONOS_APICALL void KHRONOS_APIENTRY funcname(
* int arg1,
* int arg2) KHRONOS_APIATTRIBUTES;
*/
/*-------------------------------------------------------------------------
* Definition of KHRONOS_APICALL
*-------------------------------------------------------------------------
* This precedes the return type of the function in the function prototype.
*/
#if defined(_WIN32) && !defined(__SCITECH_SNAP__)
# define KHRONOS_APICALL __declspec(dllimport)
#elif defined (__SYMBIAN32__)
# define KHRONOS_APICALL IMPORT_C
#elif defined(__ANDROID__)
# define KHRONOS_APICALL __attribute__((visibility("default")))
#else
# define KHRONOS_APICALL
#endif
/*-------------------------------------------------------------------------
* Definition of KHRONOS_APIENTRY
*-------------------------------------------------------------------------
* This follows the return type of the function and precedes the function
* name in the function prototype.
*/
#if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__SCITECH_SNAP__)
/* Win32 but not WinCE */
# define KHRONOS_APIENTRY __stdcall
#else
# define KHRONOS_APIENTRY
#endif
/*-------------------------------------------------------------------------
* Definition of KHRONOS_APIATTRIBUTES
*-------------------------------------------------------------------------
* This follows the closing parenthesis of the function prototype arguments.
*/
#if defined (__ARMCC_2__)
#define KHRONOS_APIATTRIBUTES __softfp
#else
#define KHRONOS_APIATTRIBUTES
#endif
/*-------------------------------------------------------------------------
* basic type definitions
*-----------------------------------------------------------------------*/
#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__GNUC__) || defined(__SCO__) || defined(__USLC__)
/*
* Using <stdint.h>
*/
#include <stdint.h>
typedef int32_t khronos_int32_t;
typedef uint32_t khronos_uint32_t;
typedef int64_t khronos_int64_t;
typedef uint64_t khronos_uint64_t;
#define KHRONOS_SUPPORT_INT64 1
#define KHRONOS_SUPPORT_FLOAT 1
#elif defined(__VMS ) || defined(__sgi)
/*
* Using <inttypes.h>
*/
#include <inttypes.h>
typedef int32_t khronos_int32_t;
typedef uint32_t khronos_uint32_t;
typedef int64_t khronos_int64_t;
typedef uint64_t khronos_uint64_t;
#define KHRONOS_SUPPORT_INT64 1
#define KHRONOS_SUPPORT_FLOAT 1
#elif defined(_WIN32) && !defined(__SCITECH_SNAP__)
/*
* Win32
*/
typedef __int32 khronos_int32_t;
typedef unsigned __int32 khronos_uint32_t;
typedef __int64 khronos_int64_t;
typedef unsigned __int64 khronos_uint64_t;
#define KHRONOS_SUPPORT_INT64 1
#define KHRONOS_SUPPORT_FLOAT 1
#elif defined(__sun__) || defined(__digital__)
/*
* Sun or Digital
*/
typedef int khronos_int32_t;
typedef unsigned int khronos_uint32_t;
#if defined(__arch64__) || defined(_LP64)
typedef long int khronos_int64_t;
typedef unsigned long int khronos_uint64_t;
#else
typedef long long int khronos_int64_t;
typedef unsigned long long int khronos_uint64_t;
#endif /* __arch64__ */
#define KHRONOS_SUPPORT_INT64 1
#define KHRONOS_SUPPORT_FLOAT 1
#elif 0
/*
* Hypothetical platform with no float or int64 support
*/
typedef int khronos_int32_t;
typedef unsigned int khronos_uint32_t;
#define KHRONOS_SUPPORT_INT64 0
#define KHRONOS_SUPPORT_FLOAT 0
#else
/*
* Generic fallback
*/
#include <stdint.h>
typedef int32_t khronos_int32_t;
typedef uint32_t khronos_uint32_t;
typedef int64_t khronos_int64_t;
typedef uint64_t khronos_uint64_t;
#define KHRONOS_SUPPORT_INT64 1
#define KHRONOS_SUPPORT_FLOAT 1
#endif
/*
* Types that are (so far) the same on all platforms
*/
typedef signed char khronos_int8_t;
typedef unsigned char khronos_uint8_t;
typedef signed short int khronos_int16_t;
typedef unsigned short int khronos_uint16_t;
/*
* Types that differ between LLP64 and LP64 architectures - in LLP64,
* pointers are 64 bits, but 'long' is still 32 bits. Win64 appears
* to be the only LLP64 architecture in current use.
*/
#ifdef _WIN64
typedef signed long long int khronos_intptr_t;
typedef unsigned long long int khronos_uintptr_t;
typedef signed long long int khronos_ssize_t;
typedef unsigned long long int khronos_usize_t;
#else
typedef signed long int khronos_intptr_t;
typedef unsigned long int khronos_uintptr_t;
typedef signed long int khronos_ssize_t;
typedef unsigned long int khronos_usize_t;
#endif
#if KHRONOS_SUPPORT_FLOAT
/*
* Float type
*/
typedef float khronos_float_t;
#endif
#if KHRONOS_SUPPORT_INT64
/* Time types
*
* These types can be used to represent a time interval in nanoseconds or
* an absolute Unadjusted System Time. Unadjusted System Time is the number
* of nanoseconds since some arbitrary system event (e.g. since the last
* time the system booted). The Unadjusted System Time is an unsigned
* 64 bit value that wraps back to 0 every 584 years. Time intervals
* may be either signed or unsigned.
*/
typedef khronos_uint64_t khronos_utime_nanoseconds_t;
typedef khronos_int64_t khronos_stime_nanoseconds_t;
#endif
/*
* Dummy value used to pad enum types to 32 bits.
*/
#ifndef KHRONOS_MAX_ENUM
#define KHRONOS_MAX_ENUM 0x7FFFFFFF
#endif
/*
* Enumerated boolean type
*
* Values other than zero should be considered to be true. Therefore
* comparisons should not be made against KHRONOS_TRUE.
*/
typedef enum {
KHRONOS_FALSE = 0,
KHRONOS_TRUE = 1,
KHRONOS_BOOLEAN_ENUM_FORCE_SIZE = KHRONOS_MAX_ENUM
} khronos_boolean_enum_t;
#endif /* __khrplatform_h_ */

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/* */
/* File: vk_platform.h */
/* */
/*
** Copyright (c) 2014-2017 The Khronos Group Inc.
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#ifndef VK_PLATFORM_H_
#define VK_PLATFORM_H_
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
/*
***************************************************************************************************
* Platform-specific directives and type declarations
***************************************************************************************************
*/
/* Platform-specific calling convention macros.
*
* Platforms should define these so that Vulkan clients call Vulkan commands
* with the same calling conventions that the Vulkan implementation expects.
*
* VKAPI_ATTR - Placed before the return type in function declarations.
* Useful for C++11 and GCC/Clang-style function attribute syntax.
* VKAPI_CALL - Placed after the return type in function declarations.
* Useful for MSVC-style calling convention syntax.
* VKAPI_PTR - Placed between the '(' and '*' in function pointer types.
*
* Function declaration: VKAPI_ATTR void VKAPI_CALL vkCommand(void);
* Function pointer type: typedef void (VKAPI_PTR *PFN_vkCommand)(void);
*/
#if defined(_WIN32)
/* On Windows, Vulkan commands use the stdcall convention */
#define VKAPI_ATTR
#define VKAPI_CALL __stdcall
#define VKAPI_PTR VKAPI_CALL
#elif defined(__ANDROID__) && defined(__ARM_ARCH) && __ARM_ARCH < 7
#error "Vulkan isn't supported for the 'armeabi' NDK ABI"
#elif defined(__ANDROID__) && defined(__ARM_ARCH) && __ARM_ARCH >= 7 && defined(__ARM_32BIT_STATE)
/* On Android 32-bit ARM targets, Vulkan functions use the "hardfloat" */
/* calling convention, i.e. float parameters are passed in registers. This */
/* is true even if the rest of the application passes floats on the stack, */
/* as it does by default when compiling for the armeabi-v7a NDK ABI. */
#define VKAPI_ATTR __attribute__((pcs("aapcs-vfp")))
#define VKAPI_CALL
#define VKAPI_PTR VKAPI_ATTR
#else
/* On other platforms, use the default calling convention */
#define VKAPI_ATTR
#define VKAPI_CALL
#define VKAPI_PTR
#endif
#include <stddef.h>
#if !defined(VK_NO_STDINT_H)
#if defined(_MSC_VER) && (_MSC_VER < 1600)
typedef signed __int8 int8_t;
typedef unsigned __int8 uint8_t;
typedef signed __int16 int16_t;
typedef unsigned __int16 uint16_t;
typedef signed __int32 int32_t;
typedef unsigned __int32 uint32_t;
typedef signed __int64 int64_t;
typedef unsigned __int64 uint64_t;
#else
#include <stdint.h>
#endif
#endif /* !defined(VK_NO_STDINT_H) */
#ifdef __cplusplus
} /* extern "C" */
#endif /* __cplusplus */
#endif

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <glad/vulkan.h>
#ifndef GLAD_IMPL_UTIL_C_
#define GLAD_IMPL_UTIL_C_
#ifdef _MSC_VER
#define GLAD_IMPL_UTIL_SSCANF sscanf_s
#else
#define GLAD_IMPL_UTIL_SSCANF sscanf
#endif
#endif /* GLAD_IMPL_UTIL_C_ */
int GLAD_VK_VERSION_1_0 = 0;
int GLAD_VK_VERSION_1_1 = 0;
int GLAD_VK_EXT_debug_report = 0;
int GLAD_VK_KHR_surface = 0;
int GLAD_VK_KHR_swapchain = 0;
PFN_vkAcquireNextImage2KHR glad_vkAcquireNextImage2KHR = NULL;
PFN_vkAcquireNextImageKHR glad_vkAcquireNextImageKHR = NULL;
PFN_vkAllocateCommandBuffers glad_vkAllocateCommandBuffers = NULL;
PFN_vkAllocateDescriptorSets glad_vkAllocateDescriptorSets = NULL;
PFN_vkAllocateMemory glad_vkAllocateMemory = NULL;
PFN_vkBeginCommandBuffer glad_vkBeginCommandBuffer = NULL;
PFN_vkBindBufferMemory glad_vkBindBufferMemory = NULL;
PFN_vkBindBufferMemory2 glad_vkBindBufferMemory2 = NULL;
PFN_vkBindImageMemory glad_vkBindImageMemory = NULL;
PFN_vkBindImageMemory2 glad_vkBindImageMemory2 = NULL;
PFN_vkCmdBeginQuery glad_vkCmdBeginQuery = NULL;
PFN_vkCmdBeginRenderPass glad_vkCmdBeginRenderPass = NULL;
PFN_vkCmdBindDescriptorSets glad_vkCmdBindDescriptorSets = NULL;
PFN_vkCmdBindIndexBuffer glad_vkCmdBindIndexBuffer = NULL;
PFN_vkCmdBindPipeline glad_vkCmdBindPipeline = NULL;
PFN_vkCmdBindVertexBuffers glad_vkCmdBindVertexBuffers = NULL;
PFN_vkCmdBlitImage glad_vkCmdBlitImage = NULL;
PFN_vkCmdClearAttachments glad_vkCmdClearAttachments = NULL;
PFN_vkCmdClearColorImage glad_vkCmdClearColorImage = NULL;
PFN_vkCmdClearDepthStencilImage glad_vkCmdClearDepthStencilImage = NULL;
PFN_vkCmdCopyBuffer glad_vkCmdCopyBuffer = NULL;
PFN_vkCmdCopyBufferToImage glad_vkCmdCopyBufferToImage = NULL;
PFN_vkCmdCopyImage glad_vkCmdCopyImage = NULL;
PFN_vkCmdCopyImageToBuffer glad_vkCmdCopyImageToBuffer = NULL;
PFN_vkCmdCopyQueryPoolResults glad_vkCmdCopyQueryPoolResults = NULL;
PFN_vkCmdDispatch glad_vkCmdDispatch = NULL;
PFN_vkCmdDispatchBase glad_vkCmdDispatchBase = NULL;
PFN_vkCmdDispatchIndirect glad_vkCmdDispatchIndirect = NULL;
PFN_vkCmdDraw glad_vkCmdDraw = NULL;
PFN_vkCmdDrawIndexed glad_vkCmdDrawIndexed = NULL;
PFN_vkCmdDrawIndexedIndirect glad_vkCmdDrawIndexedIndirect = NULL;
PFN_vkCmdDrawIndirect glad_vkCmdDrawIndirect = NULL;
PFN_vkCmdEndQuery glad_vkCmdEndQuery = NULL;
PFN_vkCmdEndRenderPass glad_vkCmdEndRenderPass = NULL;
PFN_vkCmdExecuteCommands glad_vkCmdExecuteCommands = NULL;
PFN_vkCmdFillBuffer glad_vkCmdFillBuffer = NULL;
PFN_vkCmdNextSubpass glad_vkCmdNextSubpass = NULL;
PFN_vkCmdPipelineBarrier glad_vkCmdPipelineBarrier = NULL;
PFN_vkCmdPushConstants glad_vkCmdPushConstants = NULL;
PFN_vkCmdResetEvent glad_vkCmdResetEvent = NULL;
PFN_vkCmdResetQueryPool glad_vkCmdResetQueryPool = NULL;
PFN_vkCmdResolveImage glad_vkCmdResolveImage = NULL;
PFN_vkCmdSetBlendConstants glad_vkCmdSetBlendConstants = NULL;
PFN_vkCmdSetDepthBias glad_vkCmdSetDepthBias = NULL;
PFN_vkCmdSetDepthBounds glad_vkCmdSetDepthBounds = NULL;
PFN_vkCmdSetDeviceMask glad_vkCmdSetDeviceMask = NULL;
PFN_vkCmdSetEvent glad_vkCmdSetEvent = NULL;
PFN_vkCmdSetLineWidth glad_vkCmdSetLineWidth = NULL;
PFN_vkCmdSetScissor glad_vkCmdSetScissor = NULL;
PFN_vkCmdSetStencilCompareMask glad_vkCmdSetStencilCompareMask = NULL;
PFN_vkCmdSetStencilReference glad_vkCmdSetStencilReference = NULL;
PFN_vkCmdSetStencilWriteMask glad_vkCmdSetStencilWriteMask = NULL;
PFN_vkCmdSetViewport glad_vkCmdSetViewport = NULL;
PFN_vkCmdUpdateBuffer glad_vkCmdUpdateBuffer = NULL;
PFN_vkCmdWaitEvents glad_vkCmdWaitEvents = NULL;
PFN_vkCmdWriteTimestamp glad_vkCmdWriteTimestamp = NULL;
PFN_vkCreateBuffer glad_vkCreateBuffer = NULL;
PFN_vkCreateBufferView glad_vkCreateBufferView = NULL;
PFN_vkCreateCommandPool glad_vkCreateCommandPool = NULL;
PFN_vkCreateComputePipelines glad_vkCreateComputePipelines = NULL;
PFN_vkCreateDebugReportCallbackEXT glad_vkCreateDebugReportCallbackEXT = NULL;
PFN_vkCreateDescriptorPool glad_vkCreateDescriptorPool = NULL;
PFN_vkCreateDescriptorSetLayout glad_vkCreateDescriptorSetLayout = NULL;
PFN_vkCreateDescriptorUpdateTemplate glad_vkCreateDescriptorUpdateTemplate = NULL;
PFN_vkCreateDevice glad_vkCreateDevice = NULL;
PFN_vkCreateEvent glad_vkCreateEvent = NULL;
PFN_vkCreateFence glad_vkCreateFence = NULL;
PFN_vkCreateFramebuffer glad_vkCreateFramebuffer = NULL;
PFN_vkCreateGraphicsPipelines glad_vkCreateGraphicsPipelines = NULL;
PFN_vkCreateImage glad_vkCreateImage = NULL;
PFN_vkCreateImageView glad_vkCreateImageView = NULL;
PFN_vkCreateInstance glad_vkCreateInstance = NULL;
PFN_vkCreatePipelineCache glad_vkCreatePipelineCache = NULL;
PFN_vkCreatePipelineLayout glad_vkCreatePipelineLayout = NULL;
PFN_vkCreateQueryPool glad_vkCreateQueryPool = NULL;
PFN_vkCreateRenderPass glad_vkCreateRenderPass = NULL;
PFN_vkCreateSampler glad_vkCreateSampler = NULL;
PFN_vkCreateSamplerYcbcrConversion glad_vkCreateSamplerYcbcrConversion = NULL;
PFN_vkCreateSemaphore glad_vkCreateSemaphore = NULL;
PFN_vkCreateShaderModule glad_vkCreateShaderModule = NULL;
PFN_vkCreateSwapchainKHR glad_vkCreateSwapchainKHR = NULL;
PFN_vkDebugReportMessageEXT glad_vkDebugReportMessageEXT = NULL;
PFN_vkDestroyBuffer glad_vkDestroyBuffer = NULL;
PFN_vkDestroyBufferView glad_vkDestroyBufferView = NULL;
PFN_vkDestroyCommandPool glad_vkDestroyCommandPool = NULL;
PFN_vkDestroyDebugReportCallbackEXT glad_vkDestroyDebugReportCallbackEXT = NULL;
PFN_vkDestroyDescriptorPool glad_vkDestroyDescriptorPool = NULL;
PFN_vkDestroyDescriptorSetLayout glad_vkDestroyDescriptorSetLayout = NULL;
PFN_vkDestroyDescriptorUpdateTemplate glad_vkDestroyDescriptorUpdateTemplate = NULL;
PFN_vkDestroyDevice glad_vkDestroyDevice = NULL;
PFN_vkDestroyEvent glad_vkDestroyEvent = NULL;
PFN_vkDestroyFence glad_vkDestroyFence = NULL;
PFN_vkDestroyFramebuffer glad_vkDestroyFramebuffer = NULL;
PFN_vkDestroyImage glad_vkDestroyImage = NULL;
PFN_vkDestroyImageView glad_vkDestroyImageView = NULL;
PFN_vkDestroyInstance glad_vkDestroyInstance = NULL;
PFN_vkDestroyPipeline glad_vkDestroyPipeline = NULL;
PFN_vkDestroyPipelineCache glad_vkDestroyPipelineCache = NULL;
PFN_vkDestroyPipelineLayout glad_vkDestroyPipelineLayout = NULL;
PFN_vkDestroyQueryPool glad_vkDestroyQueryPool = NULL;
PFN_vkDestroyRenderPass glad_vkDestroyRenderPass = NULL;
PFN_vkDestroySampler glad_vkDestroySampler = NULL;
PFN_vkDestroySamplerYcbcrConversion glad_vkDestroySamplerYcbcrConversion = NULL;
PFN_vkDestroySemaphore glad_vkDestroySemaphore = NULL;
PFN_vkDestroyShaderModule glad_vkDestroyShaderModule = NULL;
PFN_vkDestroySurfaceKHR glad_vkDestroySurfaceKHR = NULL;
PFN_vkDestroySwapchainKHR glad_vkDestroySwapchainKHR = NULL;
PFN_vkDeviceWaitIdle glad_vkDeviceWaitIdle = NULL;
PFN_vkEndCommandBuffer glad_vkEndCommandBuffer = NULL;
PFN_vkEnumerateDeviceExtensionProperties glad_vkEnumerateDeviceExtensionProperties = NULL;
PFN_vkEnumerateDeviceLayerProperties glad_vkEnumerateDeviceLayerProperties = NULL;
PFN_vkEnumerateInstanceExtensionProperties glad_vkEnumerateInstanceExtensionProperties = NULL;
PFN_vkEnumerateInstanceLayerProperties glad_vkEnumerateInstanceLayerProperties = NULL;
PFN_vkEnumerateInstanceVersion glad_vkEnumerateInstanceVersion = NULL;
PFN_vkEnumeratePhysicalDeviceGroups glad_vkEnumeratePhysicalDeviceGroups = NULL;
PFN_vkEnumeratePhysicalDevices glad_vkEnumeratePhysicalDevices = NULL;
PFN_vkFlushMappedMemoryRanges glad_vkFlushMappedMemoryRanges = NULL;
PFN_vkFreeCommandBuffers glad_vkFreeCommandBuffers = NULL;
PFN_vkFreeDescriptorSets glad_vkFreeDescriptorSets = NULL;
PFN_vkFreeMemory glad_vkFreeMemory = NULL;
PFN_vkGetBufferMemoryRequirements glad_vkGetBufferMemoryRequirements = NULL;
PFN_vkGetBufferMemoryRequirements2 glad_vkGetBufferMemoryRequirements2 = NULL;
PFN_vkGetDescriptorSetLayoutSupport glad_vkGetDescriptorSetLayoutSupport = NULL;
PFN_vkGetDeviceGroupPeerMemoryFeatures glad_vkGetDeviceGroupPeerMemoryFeatures = NULL;
PFN_vkGetDeviceGroupPresentCapabilitiesKHR glad_vkGetDeviceGroupPresentCapabilitiesKHR = NULL;
PFN_vkGetDeviceGroupSurfacePresentModesKHR glad_vkGetDeviceGroupSurfacePresentModesKHR = NULL;
PFN_vkGetDeviceMemoryCommitment glad_vkGetDeviceMemoryCommitment = NULL;
PFN_vkGetDeviceProcAddr glad_vkGetDeviceProcAddr = NULL;
PFN_vkGetDeviceQueue glad_vkGetDeviceQueue = NULL;
PFN_vkGetDeviceQueue2 glad_vkGetDeviceQueue2 = NULL;
PFN_vkGetEventStatus glad_vkGetEventStatus = NULL;
PFN_vkGetFenceStatus glad_vkGetFenceStatus = NULL;
PFN_vkGetImageMemoryRequirements glad_vkGetImageMemoryRequirements = NULL;
PFN_vkGetImageMemoryRequirements2 glad_vkGetImageMemoryRequirements2 = NULL;
PFN_vkGetImageSparseMemoryRequirements glad_vkGetImageSparseMemoryRequirements = NULL;
PFN_vkGetImageSparseMemoryRequirements2 glad_vkGetImageSparseMemoryRequirements2 = NULL;
PFN_vkGetImageSubresourceLayout glad_vkGetImageSubresourceLayout = NULL;
PFN_vkGetInstanceProcAddr glad_vkGetInstanceProcAddr = NULL;
PFN_vkGetPhysicalDeviceExternalBufferProperties glad_vkGetPhysicalDeviceExternalBufferProperties = NULL;
PFN_vkGetPhysicalDeviceExternalFenceProperties glad_vkGetPhysicalDeviceExternalFenceProperties = NULL;
PFN_vkGetPhysicalDeviceExternalSemaphoreProperties glad_vkGetPhysicalDeviceExternalSemaphoreProperties = NULL;
PFN_vkGetPhysicalDeviceFeatures glad_vkGetPhysicalDeviceFeatures = NULL;
PFN_vkGetPhysicalDeviceFeatures2 glad_vkGetPhysicalDeviceFeatures2 = NULL;
PFN_vkGetPhysicalDeviceFormatProperties glad_vkGetPhysicalDeviceFormatProperties = NULL;
PFN_vkGetPhysicalDeviceFormatProperties2 glad_vkGetPhysicalDeviceFormatProperties2 = NULL;
PFN_vkGetPhysicalDeviceImageFormatProperties glad_vkGetPhysicalDeviceImageFormatProperties = NULL;
PFN_vkGetPhysicalDeviceImageFormatProperties2 glad_vkGetPhysicalDeviceImageFormatProperties2 = NULL;
PFN_vkGetPhysicalDeviceMemoryProperties glad_vkGetPhysicalDeviceMemoryProperties = NULL;
PFN_vkGetPhysicalDeviceMemoryProperties2 glad_vkGetPhysicalDeviceMemoryProperties2 = NULL;
PFN_vkGetPhysicalDevicePresentRectanglesKHR glad_vkGetPhysicalDevicePresentRectanglesKHR = NULL;
PFN_vkGetPhysicalDeviceProperties glad_vkGetPhysicalDeviceProperties = NULL;
PFN_vkGetPhysicalDeviceProperties2 glad_vkGetPhysicalDeviceProperties2 = NULL;
PFN_vkGetPhysicalDeviceQueueFamilyProperties glad_vkGetPhysicalDeviceQueueFamilyProperties = NULL;
PFN_vkGetPhysicalDeviceQueueFamilyProperties2 glad_vkGetPhysicalDeviceQueueFamilyProperties2 = NULL;
PFN_vkGetPhysicalDeviceSparseImageFormatProperties glad_vkGetPhysicalDeviceSparseImageFormatProperties = NULL;
PFN_vkGetPhysicalDeviceSparseImageFormatProperties2 glad_vkGetPhysicalDeviceSparseImageFormatProperties2 = NULL;
PFN_vkGetPhysicalDeviceSurfaceCapabilitiesKHR glad_vkGetPhysicalDeviceSurfaceCapabilitiesKHR = NULL;
PFN_vkGetPhysicalDeviceSurfaceFormatsKHR glad_vkGetPhysicalDeviceSurfaceFormatsKHR = NULL;
PFN_vkGetPhysicalDeviceSurfacePresentModesKHR glad_vkGetPhysicalDeviceSurfacePresentModesKHR = NULL;
PFN_vkGetPhysicalDeviceSurfaceSupportKHR glad_vkGetPhysicalDeviceSurfaceSupportKHR = NULL;
PFN_vkGetPipelineCacheData glad_vkGetPipelineCacheData = NULL;
PFN_vkGetQueryPoolResults glad_vkGetQueryPoolResults = NULL;
PFN_vkGetRenderAreaGranularity glad_vkGetRenderAreaGranularity = NULL;
PFN_vkGetSwapchainImagesKHR glad_vkGetSwapchainImagesKHR = NULL;
PFN_vkInvalidateMappedMemoryRanges glad_vkInvalidateMappedMemoryRanges = NULL;
PFN_vkMapMemory glad_vkMapMemory = NULL;
PFN_vkMergePipelineCaches glad_vkMergePipelineCaches = NULL;
PFN_vkQueueBindSparse glad_vkQueueBindSparse = NULL;
PFN_vkQueuePresentKHR glad_vkQueuePresentKHR = NULL;
PFN_vkQueueSubmit glad_vkQueueSubmit = NULL;
PFN_vkQueueWaitIdle glad_vkQueueWaitIdle = NULL;
PFN_vkResetCommandBuffer glad_vkResetCommandBuffer = NULL;
PFN_vkResetCommandPool glad_vkResetCommandPool = NULL;
PFN_vkResetDescriptorPool glad_vkResetDescriptorPool = NULL;
PFN_vkResetEvent glad_vkResetEvent = NULL;
PFN_vkResetFences glad_vkResetFences = NULL;
PFN_vkSetEvent glad_vkSetEvent = NULL;
PFN_vkTrimCommandPool glad_vkTrimCommandPool = NULL;
PFN_vkUnmapMemory glad_vkUnmapMemory = NULL;
PFN_vkUpdateDescriptorSetWithTemplate glad_vkUpdateDescriptorSetWithTemplate = NULL;
PFN_vkUpdateDescriptorSets glad_vkUpdateDescriptorSets = NULL;
PFN_vkWaitForFences glad_vkWaitForFences = NULL;
static void glad_vk_load_VK_VERSION_1_0( GLADuserptrloadfunc load, void* userptr) {
if(!GLAD_VK_VERSION_1_0) return;
vkAllocateCommandBuffers = (PFN_vkAllocateCommandBuffers) load("vkAllocateCommandBuffers", userptr);
vkAllocateDescriptorSets = (PFN_vkAllocateDescriptorSets) load("vkAllocateDescriptorSets", userptr);
vkAllocateMemory = (PFN_vkAllocateMemory) load("vkAllocateMemory", userptr);
vkBeginCommandBuffer = (PFN_vkBeginCommandBuffer) load("vkBeginCommandBuffer", userptr);
vkBindBufferMemory = (PFN_vkBindBufferMemory) load("vkBindBufferMemory", userptr);
vkBindImageMemory = (PFN_vkBindImageMemory) load("vkBindImageMemory", userptr);
vkCmdBeginQuery = (PFN_vkCmdBeginQuery) load("vkCmdBeginQuery", userptr);
vkCmdBeginRenderPass = (PFN_vkCmdBeginRenderPass) load("vkCmdBeginRenderPass", userptr);
vkCmdBindDescriptorSets = (PFN_vkCmdBindDescriptorSets) load("vkCmdBindDescriptorSets", userptr);
vkCmdBindIndexBuffer = (PFN_vkCmdBindIndexBuffer) load("vkCmdBindIndexBuffer", userptr);
vkCmdBindPipeline = (PFN_vkCmdBindPipeline) load("vkCmdBindPipeline", userptr);
vkCmdBindVertexBuffers = (PFN_vkCmdBindVertexBuffers) load("vkCmdBindVertexBuffers", userptr);
vkCmdBlitImage = (PFN_vkCmdBlitImage) load("vkCmdBlitImage", userptr);
vkCmdClearAttachments = (PFN_vkCmdClearAttachments) load("vkCmdClearAttachments", userptr);
vkCmdClearColorImage = (PFN_vkCmdClearColorImage) load("vkCmdClearColorImage", userptr);
vkCmdClearDepthStencilImage = (PFN_vkCmdClearDepthStencilImage) load("vkCmdClearDepthStencilImage", userptr);
vkCmdCopyBuffer = (PFN_vkCmdCopyBuffer) load("vkCmdCopyBuffer", userptr);
vkCmdCopyBufferToImage = (PFN_vkCmdCopyBufferToImage) load("vkCmdCopyBufferToImage", userptr);
vkCmdCopyImage = (PFN_vkCmdCopyImage) load("vkCmdCopyImage", userptr);
vkCmdCopyImageToBuffer = (PFN_vkCmdCopyImageToBuffer) load("vkCmdCopyImageToBuffer", userptr);
vkCmdCopyQueryPoolResults = (PFN_vkCmdCopyQueryPoolResults) load("vkCmdCopyQueryPoolResults", userptr);
vkCmdDispatch = (PFN_vkCmdDispatch) load("vkCmdDispatch", userptr);
vkCmdDispatchIndirect = (PFN_vkCmdDispatchIndirect) load("vkCmdDispatchIndirect", userptr);
vkCmdDraw = (PFN_vkCmdDraw) load("vkCmdDraw", userptr);
vkCmdDrawIndexed = (PFN_vkCmdDrawIndexed) load("vkCmdDrawIndexed", userptr);
vkCmdDrawIndexedIndirect = (PFN_vkCmdDrawIndexedIndirect) load("vkCmdDrawIndexedIndirect", userptr);
vkCmdDrawIndirect = (PFN_vkCmdDrawIndirect) load("vkCmdDrawIndirect", userptr);
vkCmdEndQuery = (PFN_vkCmdEndQuery) load("vkCmdEndQuery", userptr);
vkCmdEndRenderPass = (PFN_vkCmdEndRenderPass) load("vkCmdEndRenderPass", userptr);
vkCmdExecuteCommands = (PFN_vkCmdExecuteCommands) load("vkCmdExecuteCommands", userptr);
vkCmdFillBuffer = (PFN_vkCmdFillBuffer) load("vkCmdFillBuffer", userptr);
vkCmdNextSubpass = (PFN_vkCmdNextSubpass) load("vkCmdNextSubpass", userptr);
vkCmdPipelineBarrier = (PFN_vkCmdPipelineBarrier) load("vkCmdPipelineBarrier", userptr);
vkCmdPushConstants = (PFN_vkCmdPushConstants) load("vkCmdPushConstants", userptr);
vkCmdResetEvent = (PFN_vkCmdResetEvent) load("vkCmdResetEvent", userptr);
vkCmdResetQueryPool = (PFN_vkCmdResetQueryPool) load("vkCmdResetQueryPool", userptr);
vkCmdResolveImage = (PFN_vkCmdResolveImage) load("vkCmdResolveImage", userptr);
vkCmdSetBlendConstants = (PFN_vkCmdSetBlendConstants) load("vkCmdSetBlendConstants", userptr);
vkCmdSetDepthBias = (PFN_vkCmdSetDepthBias) load("vkCmdSetDepthBias", userptr);
vkCmdSetDepthBounds = (PFN_vkCmdSetDepthBounds) load("vkCmdSetDepthBounds", userptr);
vkCmdSetEvent = (PFN_vkCmdSetEvent) load("vkCmdSetEvent", userptr);
vkCmdSetLineWidth = (PFN_vkCmdSetLineWidth) load("vkCmdSetLineWidth", userptr);
vkCmdSetScissor = (PFN_vkCmdSetScissor) load("vkCmdSetScissor", userptr);
vkCmdSetStencilCompareMask = (PFN_vkCmdSetStencilCompareMask) load("vkCmdSetStencilCompareMask", userptr);
vkCmdSetStencilReference = (PFN_vkCmdSetStencilReference) load("vkCmdSetStencilReference", userptr);
vkCmdSetStencilWriteMask = (PFN_vkCmdSetStencilWriteMask) load("vkCmdSetStencilWriteMask", userptr);
vkCmdSetViewport = (PFN_vkCmdSetViewport) load("vkCmdSetViewport", userptr);
vkCmdUpdateBuffer = (PFN_vkCmdUpdateBuffer) load("vkCmdUpdateBuffer", userptr);
vkCmdWaitEvents = (PFN_vkCmdWaitEvents) load("vkCmdWaitEvents", userptr);
vkCmdWriteTimestamp = (PFN_vkCmdWriteTimestamp) load("vkCmdWriteTimestamp", userptr);
vkCreateBuffer = (PFN_vkCreateBuffer) load("vkCreateBuffer", userptr);
vkCreateBufferView = (PFN_vkCreateBufferView) load("vkCreateBufferView", userptr);
vkCreateCommandPool = (PFN_vkCreateCommandPool) load("vkCreateCommandPool", userptr);
vkCreateComputePipelines = (PFN_vkCreateComputePipelines) load("vkCreateComputePipelines", userptr);
vkCreateDescriptorPool = (PFN_vkCreateDescriptorPool) load("vkCreateDescriptorPool", userptr);
vkCreateDescriptorSetLayout = (PFN_vkCreateDescriptorSetLayout) load("vkCreateDescriptorSetLayout", userptr);
vkCreateDevice = (PFN_vkCreateDevice) load("vkCreateDevice", userptr);
vkCreateEvent = (PFN_vkCreateEvent) load("vkCreateEvent", userptr);
vkCreateFence = (PFN_vkCreateFence) load("vkCreateFence", userptr);
vkCreateFramebuffer = (PFN_vkCreateFramebuffer) load("vkCreateFramebuffer", userptr);
vkCreateGraphicsPipelines = (PFN_vkCreateGraphicsPipelines) load("vkCreateGraphicsPipelines", userptr);
vkCreateImage = (PFN_vkCreateImage) load("vkCreateImage", userptr);
vkCreateImageView = (PFN_vkCreateImageView) load("vkCreateImageView", userptr);
vkCreateInstance = (PFN_vkCreateInstance) load("vkCreateInstance", userptr);
vkCreatePipelineCache = (PFN_vkCreatePipelineCache) load("vkCreatePipelineCache", userptr);
vkCreatePipelineLayout = (PFN_vkCreatePipelineLayout) load("vkCreatePipelineLayout", userptr);
vkCreateQueryPool = (PFN_vkCreateQueryPool) load("vkCreateQueryPool", userptr);
vkCreateRenderPass = (PFN_vkCreateRenderPass) load("vkCreateRenderPass", userptr);
vkCreateSampler = (PFN_vkCreateSampler) load("vkCreateSampler", userptr);
vkCreateSemaphore = (PFN_vkCreateSemaphore) load("vkCreateSemaphore", userptr);
vkCreateShaderModule = (PFN_vkCreateShaderModule) load("vkCreateShaderModule", userptr);
vkDestroyBuffer = (PFN_vkDestroyBuffer) load("vkDestroyBuffer", userptr);
vkDestroyBufferView = (PFN_vkDestroyBufferView) load("vkDestroyBufferView", userptr);
vkDestroyCommandPool = (PFN_vkDestroyCommandPool) load("vkDestroyCommandPool", userptr);
vkDestroyDescriptorPool = (PFN_vkDestroyDescriptorPool) load("vkDestroyDescriptorPool", userptr);
vkDestroyDescriptorSetLayout = (PFN_vkDestroyDescriptorSetLayout) load("vkDestroyDescriptorSetLayout", userptr);
vkDestroyDevice = (PFN_vkDestroyDevice) load("vkDestroyDevice", userptr);
vkDestroyEvent = (PFN_vkDestroyEvent) load("vkDestroyEvent", userptr);
vkDestroyFence = (PFN_vkDestroyFence) load("vkDestroyFence", userptr);
vkDestroyFramebuffer = (PFN_vkDestroyFramebuffer) load("vkDestroyFramebuffer", userptr);
vkDestroyImage = (PFN_vkDestroyImage) load("vkDestroyImage", userptr);
vkDestroyImageView = (PFN_vkDestroyImageView) load("vkDestroyImageView", userptr);
vkDestroyInstance = (PFN_vkDestroyInstance) load("vkDestroyInstance", userptr);
vkDestroyPipeline = (PFN_vkDestroyPipeline) load("vkDestroyPipeline", userptr);
vkDestroyPipelineCache = (PFN_vkDestroyPipelineCache) load("vkDestroyPipelineCache", userptr);
vkDestroyPipelineLayout = (PFN_vkDestroyPipelineLayout) load("vkDestroyPipelineLayout", userptr);
vkDestroyQueryPool = (PFN_vkDestroyQueryPool) load("vkDestroyQueryPool", userptr);
vkDestroyRenderPass = (PFN_vkDestroyRenderPass) load("vkDestroyRenderPass", userptr);
vkDestroySampler = (PFN_vkDestroySampler) load("vkDestroySampler", userptr);
vkDestroySemaphore = (PFN_vkDestroySemaphore) load("vkDestroySemaphore", userptr);
vkDestroyShaderModule = (PFN_vkDestroyShaderModule) load("vkDestroyShaderModule", userptr);
vkDeviceWaitIdle = (PFN_vkDeviceWaitIdle) load("vkDeviceWaitIdle", userptr);
vkEndCommandBuffer = (PFN_vkEndCommandBuffer) load("vkEndCommandBuffer", userptr);
vkEnumerateDeviceExtensionProperties = (PFN_vkEnumerateDeviceExtensionProperties) load("vkEnumerateDeviceExtensionProperties", userptr);
vkEnumerateDeviceLayerProperties = (PFN_vkEnumerateDeviceLayerProperties) load("vkEnumerateDeviceLayerProperties", userptr);
vkEnumerateInstanceExtensionProperties = (PFN_vkEnumerateInstanceExtensionProperties) load("vkEnumerateInstanceExtensionProperties", userptr);
vkEnumerateInstanceLayerProperties = (PFN_vkEnumerateInstanceLayerProperties) load("vkEnumerateInstanceLayerProperties", userptr);
vkEnumeratePhysicalDevices = (PFN_vkEnumeratePhysicalDevices) load("vkEnumeratePhysicalDevices", userptr);
vkFlushMappedMemoryRanges = (PFN_vkFlushMappedMemoryRanges) load("vkFlushMappedMemoryRanges", userptr);
vkFreeCommandBuffers = (PFN_vkFreeCommandBuffers) load("vkFreeCommandBuffers", userptr);
vkFreeDescriptorSets = (PFN_vkFreeDescriptorSets) load("vkFreeDescriptorSets", userptr);
vkFreeMemory = (PFN_vkFreeMemory) load("vkFreeMemory", userptr);
vkGetBufferMemoryRequirements = (PFN_vkGetBufferMemoryRequirements) load("vkGetBufferMemoryRequirements", userptr);
vkGetDeviceMemoryCommitment = (PFN_vkGetDeviceMemoryCommitment) load("vkGetDeviceMemoryCommitment", userptr);
vkGetDeviceProcAddr = (PFN_vkGetDeviceProcAddr) load("vkGetDeviceProcAddr", userptr);
vkGetDeviceQueue = (PFN_vkGetDeviceQueue) load("vkGetDeviceQueue", userptr);
vkGetEventStatus = (PFN_vkGetEventStatus) load("vkGetEventStatus", userptr);
vkGetFenceStatus = (PFN_vkGetFenceStatus) load("vkGetFenceStatus", userptr);
vkGetImageMemoryRequirements = (PFN_vkGetImageMemoryRequirements) load("vkGetImageMemoryRequirements", userptr);
vkGetImageSparseMemoryRequirements = (PFN_vkGetImageSparseMemoryRequirements) load("vkGetImageSparseMemoryRequirements", userptr);
vkGetImageSubresourceLayout = (PFN_vkGetImageSubresourceLayout) load("vkGetImageSubresourceLayout", userptr);
vkGetInstanceProcAddr = (PFN_vkGetInstanceProcAddr) load("vkGetInstanceProcAddr", userptr);
vkGetPhysicalDeviceFeatures = (PFN_vkGetPhysicalDeviceFeatures) load("vkGetPhysicalDeviceFeatures", userptr);
vkGetPhysicalDeviceFormatProperties = (PFN_vkGetPhysicalDeviceFormatProperties) load("vkGetPhysicalDeviceFormatProperties", userptr);
vkGetPhysicalDeviceImageFormatProperties = (PFN_vkGetPhysicalDeviceImageFormatProperties) load("vkGetPhysicalDeviceImageFormatProperties", userptr);
vkGetPhysicalDeviceMemoryProperties = (PFN_vkGetPhysicalDeviceMemoryProperties) load("vkGetPhysicalDeviceMemoryProperties", userptr);
vkGetPhysicalDeviceProperties = (PFN_vkGetPhysicalDeviceProperties) load("vkGetPhysicalDeviceProperties", userptr);
vkGetPhysicalDeviceQueueFamilyProperties = (PFN_vkGetPhysicalDeviceQueueFamilyProperties) load("vkGetPhysicalDeviceQueueFamilyProperties", userptr);
vkGetPhysicalDeviceSparseImageFormatProperties = (PFN_vkGetPhysicalDeviceSparseImageFormatProperties) load("vkGetPhysicalDeviceSparseImageFormatProperties", userptr);
vkGetPipelineCacheData = (PFN_vkGetPipelineCacheData) load("vkGetPipelineCacheData", userptr);
vkGetQueryPoolResults = (PFN_vkGetQueryPoolResults) load("vkGetQueryPoolResults", userptr);
vkGetRenderAreaGranularity = (PFN_vkGetRenderAreaGranularity) load("vkGetRenderAreaGranularity", userptr);
vkInvalidateMappedMemoryRanges = (PFN_vkInvalidateMappedMemoryRanges) load("vkInvalidateMappedMemoryRanges", userptr);
vkMapMemory = (PFN_vkMapMemory) load("vkMapMemory", userptr);
vkMergePipelineCaches = (PFN_vkMergePipelineCaches) load("vkMergePipelineCaches", userptr);
vkQueueBindSparse = (PFN_vkQueueBindSparse) load("vkQueueBindSparse", userptr);
vkQueueSubmit = (PFN_vkQueueSubmit) load("vkQueueSubmit", userptr);
vkQueueWaitIdle = (PFN_vkQueueWaitIdle) load("vkQueueWaitIdle", userptr);
vkResetCommandBuffer = (PFN_vkResetCommandBuffer) load("vkResetCommandBuffer", userptr);
vkResetCommandPool = (PFN_vkResetCommandPool) load("vkResetCommandPool", userptr);
vkResetDescriptorPool = (PFN_vkResetDescriptorPool) load("vkResetDescriptorPool", userptr);
vkResetEvent = (PFN_vkResetEvent) load("vkResetEvent", userptr);
vkResetFences = (PFN_vkResetFences) load("vkResetFences", userptr);
vkSetEvent = (PFN_vkSetEvent) load("vkSetEvent", userptr);
vkUnmapMemory = (PFN_vkUnmapMemory) load("vkUnmapMemory", userptr);
vkUpdateDescriptorSets = (PFN_vkUpdateDescriptorSets) load("vkUpdateDescriptorSets", userptr);
vkWaitForFences = (PFN_vkWaitForFences) load("vkWaitForFences", userptr);
}
static void glad_vk_load_VK_VERSION_1_1( GLADuserptrloadfunc load, void* userptr) {
if(!GLAD_VK_VERSION_1_1) return;
vkBindBufferMemory2 = (PFN_vkBindBufferMemory2) load("vkBindBufferMemory2", userptr);
vkBindImageMemory2 = (PFN_vkBindImageMemory2) load("vkBindImageMemory2", userptr);
vkCmdDispatchBase = (PFN_vkCmdDispatchBase) load("vkCmdDispatchBase", userptr);
vkCmdSetDeviceMask = (PFN_vkCmdSetDeviceMask) load("vkCmdSetDeviceMask", userptr);
vkCreateDescriptorUpdateTemplate = (PFN_vkCreateDescriptorUpdateTemplate) load("vkCreateDescriptorUpdateTemplate", userptr);
vkCreateSamplerYcbcrConversion = (PFN_vkCreateSamplerYcbcrConversion) load("vkCreateSamplerYcbcrConversion", userptr);
vkDestroyDescriptorUpdateTemplate = (PFN_vkDestroyDescriptorUpdateTemplate) load("vkDestroyDescriptorUpdateTemplate", userptr);
vkDestroySamplerYcbcrConversion = (PFN_vkDestroySamplerYcbcrConversion) load("vkDestroySamplerYcbcrConversion", userptr);
vkEnumerateInstanceVersion = (PFN_vkEnumerateInstanceVersion) load("vkEnumerateInstanceVersion", userptr);
vkEnumeratePhysicalDeviceGroups = (PFN_vkEnumeratePhysicalDeviceGroups) load("vkEnumeratePhysicalDeviceGroups", userptr);
vkGetBufferMemoryRequirements2 = (PFN_vkGetBufferMemoryRequirements2) load("vkGetBufferMemoryRequirements2", userptr);
vkGetDescriptorSetLayoutSupport = (PFN_vkGetDescriptorSetLayoutSupport) load("vkGetDescriptorSetLayoutSupport", userptr);
vkGetDeviceGroupPeerMemoryFeatures = (PFN_vkGetDeviceGroupPeerMemoryFeatures) load("vkGetDeviceGroupPeerMemoryFeatures", userptr);
vkGetDeviceQueue2 = (PFN_vkGetDeviceQueue2) load("vkGetDeviceQueue2", userptr);
vkGetImageMemoryRequirements2 = (PFN_vkGetImageMemoryRequirements2) load("vkGetImageMemoryRequirements2", userptr);
vkGetImageSparseMemoryRequirements2 = (PFN_vkGetImageSparseMemoryRequirements2) load("vkGetImageSparseMemoryRequirements2", userptr);
vkGetPhysicalDeviceExternalBufferProperties = (PFN_vkGetPhysicalDeviceExternalBufferProperties) load("vkGetPhysicalDeviceExternalBufferProperties", userptr);
vkGetPhysicalDeviceExternalFenceProperties = (PFN_vkGetPhysicalDeviceExternalFenceProperties) load("vkGetPhysicalDeviceExternalFenceProperties", userptr);
vkGetPhysicalDeviceExternalSemaphoreProperties = (PFN_vkGetPhysicalDeviceExternalSemaphoreProperties) load("vkGetPhysicalDeviceExternalSemaphoreProperties", userptr);
vkGetPhysicalDeviceFeatures2 = (PFN_vkGetPhysicalDeviceFeatures2) load("vkGetPhysicalDeviceFeatures2", userptr);
vkGetPhysicalDeviceFormatProperties2 = (PFN_vkGetPhysicalDeviceFormatProperties2) load("vkGetPhysicalDeviceFormatProperties2", userptr);
vkGetPhysicalDeviceImageFormatProperties2 = (PFN_vkGetPhysicalDeviceImageFormatProperties2) load("vkGetPhysicalDeviceImageFormatProperties2", userptr);
vkGetPhysicalDeviceMemoryProperties2 = (PFN_vkGetPhysicalDeviceMemoryProperties2) load("vkGetPhysicalDeviceMemoryProperties2", userptr);
vkGetPhysicalDeviceProperties2 = (PFN_vkGetPhysicalDeviceProperties2) load("vkGetPhysicalDeviceProperties2", userptr);
vkGetPhysicalDeviceQueueFamilyProperties2 = (PFN_vkGetPhysicalDeviceQueueFamilyProperties2) load("vkGetPhysicalDeviceQueueFamilyProperties2", userptr);
vkGetPhysicalDeviceSparseImageFormatProperties2 = (PFN_vkGetPhysicalDeviceSparseImageFormatProperties2) load("vkGetPhysicalDeviceSparseImageFormatProperties2", userptr);
vkTrimCommandPool = (PFN_vkTrimCommandPool) load("vkTrimCommandPool", userptr);
vkUpdateDescriptorSetWithTemplate = (PFN_vkUpdateDescriptorSetWithTemplate) load("vkUpdateDescriptorSetWithTemplate", userptr);
}
static void glad_vk_load_VK_EXT_debug_report( GLADuserptrloadfunc load, void* userptr) {
if(!GLAD_VK_EXT_debug_report) return;
vkCreateDebugReportCallbackEXT = (PFN_vkCreateDebugReportCallbackEXT) load("vkCreateDebugReportCallbackEXT", userptr);
vkDebugReportMessageEXT = (PFN_vkDebugReportMessageEXT) load("vkDebugReportMessageEXT", userptr);
vkDestroyDebugReportCallbackEXT = (PFN_vkDestroyDebugReportCallbackEXT) load("vkDestroyDebugReportCallbackEXT", userptr);
}
static void glad_vk_load_VK_KHR_surface( GLADuserptrloadfunc load, void* userptr) {
if(!GLAD_VK_KHR_surface) return;
vkDestroySurfaceKHR = (PFN_vkDestroySurfaceKHR) load("vkDestroySurfaceKHR", userptr);
vkGetPhysicalDeviceSurfaceCapabilitiesKHR = (PFN_vkGetPhysicalDeviceSurfaceCapabilitiesKHR) load("vkGetPhysicalDeviceSurfaceCapabilitiesKHR", userptr);
vkGetPhysicalDeviceSurfaceFormatsKHR = (PFN_vkGetPhysicalDeviceSurfaceFormatsKHR) load("vkGetPhysicalDeviceSurfaceFormatsKHR", userptr);
vkGetPhysicalDeviceSurfacePresentModesKHR = (PFN_vkGetPhysicalDeviceSurfacePresentModesKHR) load("vkGetPhysicalDeviceSurfacePresentModesKHR", userptr);
vkGetPhysicalDeviceSurfaceSupportKHR = (PFN_vkGetPhysicalDeviceSurfaceSupportKHR) load("vkGetPhysicalDeviceSurfaceSupportKHR", userptr);
}
static void glad_vk_load_VK_KHR_swapchain( GLADuserptrloadfunc load, void* userptr) {
if(!GLAD_VK_KHR_swapchain) return;
vkAcquireNextImage2KHR = (PFN_vkAcquireNextImage2KHR) load("vkAcquireNextImage2KHR", userptr);
vkAcquireNextImageKHR = (PFN_vkAcquireNextImageKHR) load("vkAcquireNextImageKHR", userptr);
vkCreateSwapchainKHR = (PFN_vkCreateSwapchainKHR) load("vkCreateSwapchainKHR", userptr);
vkDestroySwapchainKHR = (PFN_vkDestroySwapchainKHR) load("vkDestroySwapchainKHR", userptr);
vkGetDeviceGroupPresentCapabilitiesKHR = (PFN_vkGetDeviceGroupPresentCapabilitiesKHR) load("vkGetDeviceGroupPresentCapabilitiesKHR", userptr);
vkGetDeviceGroupSurfacePresentModesKHR = (PFN_vkGetDeviceGroupSurfacePresentModesKHR) load("vkGetDeviceGroupSurfacePresentModesKHR", userptr);
vkGetPhysicalDevicePresentRectanglesKHR = (PFN_vkGetPhysicalDevicePresentRectanglesKHR) load("vkGetPhysicalDevicePresentRectanglesKHR", userptr);
vkGetSwapchainImagesKHR = (PFN_vkGetSwapchainImagesKHR) load("vkGetSwapchainImagesKHR", userptr);
vkQueuePresentKHR = (PFN_vkQueuePresentKHR) load("vkQueuePresentKHR", userptr);
}
static int glad_vk_get_extensions( VkPhysicalDevice physical_device, uint32_t *out_extension_count, char ***out_extensions) {
uint32_t i;
uint32_t instance_extension_count = 0;
uint32_t device_extension_count = 0;
uint32_t max_extension_count;
uint32_t total_extension_count;
char **extensions;
VkExtensionProperties *ext_properties;
VkResult result;
if (vkEnumerateInstanceExtensionProperties == NULL || (physical_device != NULL && vkEnumerateDeviceExtensionProperties == NULL)) {
return 0;
}
result = vkEnumerateInstanceExtensionProperties(NULL, &instance_extension_count, NULL);
if (result != VK_SUCCESS) {
return 0;
}
if (physical_device != NULL) {
result = vkEnumerateDeviceExtensionProperties(physical_device, NULL, &device_extension_count, NULL);
if (result != VK_SUCCESS) {
return 0;
}
}
total_extension_count = instance_extension_count + device_extension_count;
max_extension_count = instance_extension_count > device_extension_count
? instance_extension_count : device_extension_count;
ext_properties = (VkExtensionProperties*) malloc(max_extension_count * sizeof(VkExtensionProperties));
if (ext_properties == NULL) {
return 0;
}
result = vkEnumerateInstanceExtensionProperties(NULL, &instance_extension_count, ext_properties);
if (result != VK_SUCCESS) {
free((void*) ext_properties);
return 0;
}
extensions = (char**) calloc(total_extension_count, sizeof(char*));
if (extensions == NULL) {
free((void*) ext_properties);
return 0;
}
for (i = 0; i < instance_extension_count; ++i) {
VkExtensionProperties ext = ext_properties[i];
size_t extension_name_length = strlen(ext.extensionName) + 1;
extensions[i] = (char*) malloc(extension_name_length * sizeof(char));
memcpy(extensions[i], ext.extensionName, extension_name_length * sizeof(char));
}
if (physical_device != NULL) {
result = vkEnumerateDeviceExtensionProperties(physical_device, NULL, &device_extension_count, ext_properties);
if (result != VK_SUCCESS) {
for (i = 0; i < instance_extension_count; ++i) {
free((void*) extensions[i]);
}
free(extensions);
return 0;
}
for (i = 0; i < device_extension_count; ++i) {
VkExtensionProperties ext = ext_properties[i];
size_t extension_name_length = strlen(ext.extensionName) + 1;
extensions[instance_extension_count + i] = (char*) malloc(extension_name_length * sizeof(char));
memcpy(extensions[instance_extension_count + i], ext.extensionName, extension_name_length * sizeof(char));
}
}
free((void*) ext_properties);
*out_extension_count = total_extension_count;
*out_extensions = extensions;
return 1;
}
static void glad_vk_free_extensions(uint32_t extension_count, char **extensions) {
uint32_t i;
for(i = 0; i < extension_count ; ++i) {
free((void*) (extensions[i]));
}
free((void*) extensions);
}
static int glad_vk_has_extension(const char *name, uint32_t extension_count, char **extensions) {
uint32_t i;
for (i = 0; i < extension_count; ++i) {
if(strcmp(name, extensions[i]) == 0) {
return 1;
}
}
return 0;
}
static GLADapiproc glad_vk_get_proc_from_userptr(const char* name, void *userptr) {
return (GLAD_GNUC_EXTENSION (GLADapiproc (*)(const char *name)) userptr)(name);
}
static int glad_vk_find_extensions_vulkan( VkPhysicalDevice physical_device) {
uint32_t extension_count = 0;
char **extensions = NULL;
if (!glad_vk_get_extensions(physical_device, &extension_count, &extensions)) return 0;
GLAD_VK_EXT_debug_report = glad_vk_has_extension("VK_EXT_debug_report", extension_count, extensions);
GLAD_VK_KHR_surface = glad_vk_has_extension("VK_KHR_surface", extension_count, extensions);
GLAD_VK_KHR_swapchain = glad_vk_has_extension("VK_KHR_swapchain", extension_count, extensions);
glad_vk_free_extensions(extension_count, extensions);
return 1;
}
static int glad_vk_find_core_vulkan( VkPhysicalDevice physical_device) {
int major = 1;
int minor = 0;
#ifdef VK_VERSION_1_1
if (vkEnumerateInstanceVersion != NULL) {
uint32_t version;
VkResult result;
result = vkEnumerateInstanceVersion(&version);
if (result == VK_SUCCESS) {
major = (int) VK_VERSION_MAJOR(version);
minor = (int) VK_VERSION_MINOR(version);
}
}
#endif
if (physical_device != NULL && vkGetPhysicalDeviceProperties != NULL) {
VkPhysicalDeviceProperties properties;
vkGetPhysicalDeviceProperties(physical_device, &properties);
major = (int) VK_VERSION_MAJOR(properties.apiVersion);
minor = (int) VK_VERSION_MINOR(properties.apiVersion);
}
GLAD_VK_VERSION_1_0 = (major == 1 && minor >= 0) || major > 1;
GLAD_VK_VERSION_1_1 = (major == 1 && minor >= 1) || major > 1;
return GLAD_MAKE_VERSION(major, minor);
}
int gladLoadVulkanUserPtr( VkPhysicalDevice physical_device, GLADuserptrloadfunc load, void *userptr) {
int version;
#ifdef VK_VERSION_1_1
vkEnumerateInstanceVersion = (PFN_vkEnumerateInstanceVersion) load("vkEnumerateInstanceVersion", userptr);
#endif
version = glad_vk_find_core_vulkan( physical_device);
if (!version) {
return 0;
}
glad_vk_load_VK_VERSION_1_0(load, userptr);
glad_vk_load_VK_VERSION_1_1(load, userptr);
if (!glad_vk_find_extensions_vulkan( physical_device)) return 0;
glad_vk_load_VK_EXT_debug_report(load, userptr);
glad_vk_load_VK_KHR_surface(load, userptr);
glad_vk_load_VK_KHR_swapchain(load, userptr);
return version;
}
int gladLoadVulkan( VkPhysicalDevice physical_device, GLADloadfunc load) {
return gladLoadVulkanUserPtr( physical_device, glad_vk_get_proc_from_userptr, GLAD_GNUC_EXTENSION (void*) load);
}

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cs440-acg/ext/nanogui/ext/glfw/deps/linmath.h Normal file
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@@ -0,0 +1,574 @@
#ifndef LINMATH_H
#define LINMATH_H
#include <math.h>
#ifdef _MSC_VER
#define inline __inline
#endif
#define LINMATH_H_DEFINE_VEC(n) \
typedef float vec##n[n]; \
static inline void vec##n##_add(vec##n r, vec##n const a, vec##n const b) \
{ \
int i; \
for(i=0; i<n; ++i) \
r[i] = a[i] + b[i]; \
} \
static inline void vec##n##_sub(vec##n r, vec##n const a, vec##n const b) \
{ \
int i; \
for(i=0; i<n; ++i) \
r[i] = a[i] - b[i]; \
} \
static inline void vec##n##_scale(vec##n r, vec##n const v, float const s) \
{ \
int i; \
for(i=0; i<n; ++i) \
r[i] = v[i] * s; \
} \
static inline float vec##n##_mul_inner(vec##n const a, vec##n const b) \
{ \
float p = 0.; \
int i; \
for(i=0; i<n; ++i) \
p += b[i]*a[i]; \
return p; \
} \
static inline float vec##n##_len(vec##n const v) \
{ \
return (float) sqrt(vec##n##_mul_inner(v,v)); \
} \
static inline void vec##n##_norm(vec##n r, vec##n const v) \
{ \
float k = 1.f / vec##n##_len(v); \
vec##n##_scale(r, v, k); \
}
LINMATH_H_DEFINE_VEC(2)
LINMATH_H_DEFINE_VEC(3)
LINMATH_H_DEFINE_VEC(4)
static inline void vec3_mul_cross(vec3 r, vec3 const a, vec3 const b)
{
r[0] = a[1]*b[2] - a[2]*b[1];
r[1] = a[2]*b[0] - a[0]*b[2];
r[2] = a[0]*b[1] - a[1]*b[0];
}
static inline void vec3_reflect(vec3 r, vec3 const v, vec3 const n)
{
float p = 2.f*vec3_mul_inner(v, n);
int i;
for(i=0;i<3;++i)
r[i] = v[i] - p*n[i];
}
static inline void vec4_mul_cross(vec4 r, vec4 a, vec4 b)
{
r[0] = a[1]*b[2] - a[2]*b[1];
r[1] = a[2]*b[0] - a[0]*b[2];
r[2] = a[0]*b[1] - a[1]*b[0];
r[3] = 1.f;
}
static inline void vec4_reflect(vec4 r, vec4 v, vec4 n)
{
float p = 2.f*vec4_mul_inner(v, n);
int i;
for(i=0;i<4;++i)
r[i] = v[i] - p*n[i];
}
typedef vec4 mat4x4[4];
static inline void mat4x4_identity(mat4x4 M)
{
int i, j;
for(i=0; i<4; ++i)
for(j=0; j<4; ++j)
M[i][j] = i==j ? 1.f : 0.f;
}
static inline void mat4x4_dup(mat4x4 M, mat4x4 N)
{
int i, j;
for(i=0; i<4; ++i)
for(j=0; j<4; ++j)
M[i][j] = N[i][j];
}
static inline void mat4x4_row(vec4 r, mat4x4 M, int i)
{
int k;
for(k=0; k<4; ++k)
r[k] = M[k][i];
}
static inline void mat4x4_col(vec4 r, mat4x4 M, int i)
{
int k;
for(k=0; k<4; ++k)
r[k] = M[i][k];
}
static inline void mat4x4_transpose(mat4x4 M, mat4x4 N)
{
int i, j;
for(j=0; j<4; ++j)
for(i=0; i<4; ++i)
M[i][j] = N[j][i];
}
static inline void mat4x4_add(mat4x4 M, mat4x4 a, mat4x4 b)
{
int i;
for(i=0; i<4; ++i)
vec4_add(M[i], a[i], b[i]);
}
static inline void mat4x4_sub(mat4x4 M, mat4x4 a, mat4x4 b)
{
int i;
for(i=0; i<4; ++i)
vec4_sub(M[i], a[i], b[i]);
}
static inline void mat4x4_scale(mat4x4 M, mat4x4 a, float k)
{
int i;
for(i=0; i<4; ++i)
vec4_scale(M[i], a[i], k);
}
static inline void mat4x4_scale_aniso(mat4x4 M, mat4x4 a, float x, float y, float z)
{
int i;
vec4_scale(M[0], a[0], x);
vec4_scale(M[1], a[1], y);
vec4_scale(M[2], a[2], z);
for(i = 0; i < 4; ++i) {
M[3][i] = a[3][i];
}
}
static inline void mat4x4_mul(mat4x4 M, mat4x4 a, mat4x4 b)
{
mat4x4 temp;
int k, r, c;
for(c=0; c<4; ++c) for(r=0; r<4; ++r) {
temp[c][r] = 0.f;
for(k=0; k<4; ++k)
temp[c][r] += a[k][r] * b[c][k];
}
mat4x4_dup(M, temp);
}
static inline void mat4x4_mul_vec4(vec4 r, mat4x4 M, vec4 v)
{
int i, j;
for(j=0; j<4; ++j) {
r[j] = 0.f;
for(i=0; i<4; ++i)
r[j] += M[i][j] * v[i];
}
}
static inline void mat4x4_translate(mat4x4 T, float x, float y, float z)
{
mat4x4_identity(T);
T[3][0] = x;
T[3][1] = y;
T[3][2] = z;
}
static inline void mat4x4_translate_in_place(mat4x4 M, float x, float y, float z)
{
vec4 t = {x, y, z, 0};
vec4 r;
int i;
for (i = 0; i < 4; ++i) {
mat4x4_row(r, M, i);
M[3][i] += vec4_mul_inner(r, t);
}
}
static inline void mat4x4_from_vec3_mul_outer(mat4x4 M, vec3 a, vec3 b)
{
int i, j;
for(i=0; i<4; ++i) for(j=0; j<4; ++j)
M[i][j] = i<3 && j<3 ? a[i] * b[j] : 0.f;
}
static inline void mat4x4_rotate(mat4x4 R, mat4x4 M, float x, float y, float z, float angle)
{
float s = sinf(angle);
float c = cosf(angle);
vec3 u = {x, y, z};
if(vec3_len(u) > 1e-4) {
mat4x4 T, C, S = {{0}};
vec3_norm(u, u);
mat4x4_from_vec3_mul_outer(T, u, u);
S[1][2] = u[0];
S[2][1] = -u[0];
S[2][0] = u[1];
S[0][2] = -u[1];
S[0][1] = u[2];
S[1][0] = -u[2];
mat4x4_scale(S, S, s);
mat4x4_identity(C);
mat4x4_sub(C, C, T);
mat4x4_scale(C, C, c);
mat4x4_add(T, T, C);
mat4x4_add(T, T, S);
T[3][3] = 1.;
mat4x4_mul(R, M, T);
} else {
mat4x4_dup(R, M);
}
}
static inline void mat4x4_rotate_X(mat4x4 Q, mat4x4 M, float angle)
{
float s = sinf(angle);
float c = cosf(angle);
mat4x4 R = {
{1.f, 0.f, 0.f, 0.f},
{0.f, c, s, 0.f},
{0.f, -s, c, 0.f},
{0.f, 0.f, 0.f, 1.f}
};
mat4x4_mul(Q, M, R);
}
static inline void mat4x4_rotate_Y(mat4x4 Q, mat4x4 M, float angle)
{
float s = sinf(angle);
float c = cosf(angle);
mat4x4 R = {
{ c, 0.f, s, 0.f},
{ 0.f, 1.f, 0.f, 0.f},
{ -s, 0.f, c, 0.f},
{ 0.f, 0.f, 0.f, 1.f}
};
mat4x4_mul(Q, M, R);
}
static inline void mat4x4_rotate_Z(mat4x4 Q, mat4x4 M, float angle)
{
float s = sinf(angle);
float c = cosf(angle);
mat4x4 R = {
{ c, s, 0.f, 0.f},
{ -s, c, 0.f, 0.f},
{ 0.f, 0.f, 1.f, 0.f},
{ 0.f, 0.f, 0.f, 1.f}
};
mat4x4_mul(Q, M, R);
}
static inline void mat4x4_invert(mat4x4 T, mat4x4 M)
{
float idet;
float s[6];
float c[6];
s[0] = M[0][0]*M[1][1] - M[1][0]*M[0][1];
s[1] = M[0][0]*M[1][2] - M[1][0]*M[0][2];
s[2] = M[0][0]*M[1][3] - M[1][0]*M[0][3];
s[3] = M[0][1]*M[1][2] - M[1][1]*M[0][2];
s[4] = M[0][1]*M[1][3] - M[1][1]*M[0][3];
s[5] = M[0][2]*M[1][3] - M[1][2]*M[0][3];
c[0] = M[2][0]*M[3][1] - M[3][0]*M[2][1];
c[1] = M[2][0]*M[3][2] - M[3][0]*M[2][2];
c[2] = M[2][0]*M[3][3] - M[3][0]*M[2][3];
c[3] = M[2][1]*M[3][2] - M[3][1]*M[2][2];
c[4] = M[2][1]*M[3][3] - M[3][1]*M[2][3];
c[5] = M[2][2]*M[3][3] - M[3][2]*M[2][3];
/* Assumes it is invertible */
idet = 1.0f/( s[0]*c[5]-s[1]*c[4]+s[2]*c[3]+s[3]*c[2]-s[4]*c[1]+s[5]*c[0] );
T[0][0] = ( M[1][1] * c[5] - M[1][2] * c[4] + M[1][3] * c[3]) * idet;
T[0][1] = (-M[0][1] * c[5] + M[0][2] * c[4] - M[0][3] * c[3]) * idet;
T[0][2] = ( M[3][1] * s[5] - M[3][2] * s[4] + M[3][3] * s[3]) * idet;
T[0][3] = (-M[2][1] * s[5] + M[2][2] * s[4] - M[2][3] * s[3]) * idet;
T[1][0] = (-M[1][0] * c[5] + M[1][2] * c[2] - M[1][3] * c[1]) * idet;
T[1][1] = ( M[0][0] * c[5] - M[0][2] * c[2] + M[0][3] * c[1]) * idet;
T[1][2] = (-M[3][0] * s[5] + M[3][2] * s[2] - M[3][3] * s[1]) * idet;
T[1][3] = ( M[2][0] * s[5] - M[2][2] * s[2] + M[2][3] * s[1]) * idet;
T[2][0] = ( M[1][0] * c[4] - M[1][1] * c[2] + M[1][3] * c[0]) * idet;
T[2][1] = (-M[0][0] * c[4] + M[0][1] * c[2] - M[0][3] * c[0]) * idet;
T[2][2] = ( M[3][0] * s[4] - M[3][1] * s[2] + M[3][3] * s[0]) * idet;
T[2][3] = (-M[2][0] * s[4] + M[2][1] * s[2] - M[2][3] * s[0]) * idet;
T[3][0] = (-M[1][0] * c[3] + M[1][1] * c[1] - M[1][2] * c[0]) * idet;
T[3][1] = ( M[0][0] * c[3] - M[0][1] * c[1] + M[0][2] * c[0]) * idet;
T[3][2] = (-M[3][0] * s[3] + M[3][1] * s[1] - M[3][2] * s[0]) * idet;
T[3][3] = ( M[2][0] * s[3] - M[2][1] * s[1] + M[2][2] * s[0]) * idet;
}
static inline void mat4x4_orthonormalize(mat4x4 R, mat4x4 M)
{
float s = 1.;
vec3 h;
mat4x4_dup(R, M);
vec3_norm(R[2], R[2]);
s = vec3_mul_inner(R[1], R[2]);
vec3_scale(h, R[2], s);
vec3_sub(R[1], R[1], h);
vec3_norm(R[2], R[2]);
s = vec3_mul_inner(R[1], R[2]);
vec3_scale(h, R[2], s);
vec3_sub(R[1], R[1], h);
vec3_norm(R[1], R[1]);
s = vec3_mul_inner(R[0], R[1]);
vec3_scale(h, R[1], s);
vec3_sub(R[0], R[0], h);
vec3_norm(R[0], R[0]);
}
static inline void mat4x4_frustum(mat4x4 M, float l, float r, float b, float t, float n, float f)
{
M[0][0] = 2.f*n/(r-l);
M[0][1] = M[0][2] = M[0][3] = 0.f;
M[1][1] = 2.f*n/(t-b);
M[1][0] = M[1][2] = M[1][3] = 0.f;
M[2][0] = (r+l)/(r-l);
M[2][1] = (t+b)/(t-b);
M[2][2] = -(f+n)/(f-n);
M[2][3] = -1.f;
M[3][2] = -2.f*(f*n)/(f-n);
M[3][0] = M[3][1] = M[3][3] = 0.f;
}
static inline void mat4x4_ortho(mat4x4 M, float l, float r, float b, float t, float n, float f)
{
M[0][0] = 2.f/(r-l);
M[0][1] = M[0][2] = M[0][3] = 0.f;
M[1][1] = 2.f/(t-b);
M[1][0] = M[1][2] = M[1][3] = 0.f;
M[2][2] = -2.f/(f-n);
M[2][0] = M[2][1] = M[2][3] = 0.f;
M[3][0] = -(r+l)/(r-l);
M[3][1] = -(t+b)/(t-b);
M[3][2] = -(f+n)/(f-n);
M[3][3] = 1.f;
}
static inline void mat4x4_perspective(mat4x4 m, float y_fov, float aspect, float n, float f)
{
/* NOTE: Degrees are an unhandy unit to work with.
* linmath.h uses radians for everything! */
float const a = 1.f / (float) tan(y_fov / 2.f);
m[0][0] = a / aspect;
m[0][1] = 0.f;
m[0][2] = 0.f;
m[0][3] = 0.f;
m[1][0] = 0.f;
m[1][1] = a;
m[1][2] = 0.f;
m[1][3] = 0.f;
m[2][0] = 0.f;
m[2][1] = 0.f;
m[2][2] = -((f + n) / (f - n));
m[2][3] = -1.f;
m[3][0] = 0.f;
m[3][1] = 0.f;
m[3][2] = -((2.f * f * n) / (f - n));
m[3][3] = 0.f;
}
static inline void mat4x4_look_at(mat4x4 m, vec3 eye, vec3 center, vec3 up)
{
/* Adapted from Android's OpenGL Matrix.java. */
/* See the OpenGL GLUT documentation for gluLookAt for a description */
/* of the algorithm. We implement it in a straightforward way: */
/* TODO: The negation of of can be spared by swapping the order of
* operands in the following cross products in the right way. */
vec3 f;
vec3 s;
vec3 t;
vec3_sub(f, center, eye);
vec3_norm(f, f);
vec3_mul_cross(s, f, up);
vec3_norm(s, s);
vec3_mul_cross(t, s, f);
m[0][0] = s[0];
m[0][1] = t[0];
m[0][2] = -f[0];
m[0][3] = 0.f;
m[1][0] = s[1];
m[1][1] = t[1];
m[1][2] = -f[1];
m[1][3] = 0.f;
m[2][0] = s[2];
m[2][1] = t[2];
m[2][2] = -f[2];
m[2][3] = 0.f;
m[3][0] = 0.f;
m[3][1] = 0.f;
m[3][2] = 0.f;
m[3][3] = 1.f;
mat4x4_translate_in_place(m, -eye[0], -eye[1], -eye[2]);
}
typedef float quat[4];
static inline void quat_identity(quat q)
{
q[0] = q[1] = q[2] = 0.f;
q[3] = 1.f;
}
static inline void quat_add(quat r, quat a, quat b)
{
int i;
for(i=0; i<4; ++i)
r[i] = a[i] + b[i];
}
static inline void quat_sub(quat r, quat a, quat b)
{
int i;
for(i=0; i<4; ++i)
r[i] = a[i] - b[i];
}
static inline void quat_mul(quat r, quat p, quat q)
{
vec3 w;
vec3_mul_cross(r, p, q);
vec3_scale(w, p, q[3]);
vec3_add(r, r, w);
vec3_scale(w, q, p[3]);
vec3_add(r, r, w);
r[3] = p[3]*q[3] - vec3_mul_inner(p, q);
}
static inline void quat_scale(quat r, quat v, float s)
{
int i;
for(i=0; i<4; ++i)
r[i] = v[i] * s;
}
static inline float quat_inner_product(quat a, quat b)
{
float p = 0.f;
int i;
for(i=0; i<4; ++i)
p += b[i]*a[i];
return p;
}
static inline void quat_conj(quat r, quat q)
{
int i;
for(i=0; i<3; ++i)
r[i] = -q[i];
r[3] = q[3];
}
static inline void quat_rotate(quat r, float angle, vec3 axis) {
int i;
vec3 v;
vec3_scale(v, axis, sinf(angle / 2));
for(i=0; i<3; ++i)
r[i] = v[i];
r[3] = cosf(angle / 2);
}
#define quat_norm vec4_norm
static inline void quat_mul_vec3(vec3 r, quat q, vec3 v)
{
/*
* Method by Fabian 'ryg' Giessen (of Farbrausch)
t = 2 * cross(q.xyz, v)
v' = v + q.w * t + cross(q.xyz, t)
*/
vec3 t = {q[0], q[1], q[2]};
vec3 u = {q[0], q[1], q[2]};
vec3_mul_cross(t, t, v);
vec3_scale(t, t, 2);
vec3_mul_cross(u, u, t);
vec3_scale(t, t, q[3]);
vec3_add(r, v, t);
vec3_add(r, r, u);
}
static inline void mat4x4_from_quat(mat4x4 M, quat q)
{
float a = q[3];
float b = q[0];
float c = q[1];
float d = q[2];
float a2 = a*a;
float b2 = b*b;
float c2 = c*c;
float d2 = d*d;
M[0][0] = a2 + b2 - c2 - d2;
M[0][1] = 2.f*(b*c + a*d);
M[0][2] = 2.f*(b*d - a*c);
M[0][3] = 0.f;
M[1][0] = 2*(b*c - a*d);
M[1][1] = a2 - b2 + c2 - d2;
M[1][2] = 2.f*(c*d + a*b);
M[1][3] = 0.f;
M[2][0] = 2.f*(b*d + a*c);
M[2][1] = 2.f*(c*d - a*b);
M[2][2] = a2 - b2 - c2 + d2;
M[2][3] = 0.f;
M[3][0] = M[3][1] = M[3][2] = 0.f;
M[3][3] = 1.f;
}
static inline void mat4x4o_mul_quat(mat4x4 R, mat4x4 M, quat q)
{
/* XXX: The way this is written only works for othogonal matrices. */
/* TODO: Take care of non-orthogonal case. */
quat_mul_vec3(R[0], q, M[0]);
quat_mul_vec3(R[1], q, M[1]);
quat_mul_vec3(R[2], q, M[2]);
R[3][0] = R[3][1] = R[3][2] = 0.f;
R[3][3] = 1.f;
}
static inline void quat_from_mat4x4(quat q, mat4x4 M)
{
float r=0.f;
int i;
int perm[] = { 0, 1, 2, 0, 1 };
int *p = perm;
for(i = 0; i<3; i++) {
float m = M[i][i];
if( m < r )
continue;
m = r;
p = &perm[i];
}
r = (float) sqrt(1.f + M[p[0]][p[0]] - M[p[1]][p[1]] - M[p[2]][p[2]] );
if(r < 1e-6) {
q[0] = 1.f;
q[1] = q[2] = q[3] = 0.f;
return;
}
q[0] = r/2.f;
q[1] = (M[p[0]][p[1]] - M[p[1]][p[0]])/(2.f*r);
q[2] = (M[p[2]][p[0]] - M[p[0]][p[2]])/(2.f*r);
q[3] = (M[p[2]][p[1]] - M[p[1]][p[2]])/(2.f*r);
}
#endif

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/**
* This file has no copyright assigned and is placed in the Public Domain.
* This file is part of the mingw-w64 runtime package.
* No warranty is given; refer to the file DISCLAIMER within this package.
*/
#if defined(_MSC_VER) && !defined(_MSC_EXTENSIONS)
#define NONAMELESSUNION 1
#endif
#if defined(NONAMELESSSTRUCT) && \
!defined(NONAMELESSUNION)
#define NONAMELESSUNION 1
#endif
#if defined(NONAMELESSUNION) && \
!defined(NONAMELESSSTRUCT)
#define NONAMELESSSTRUCT 1
#endif
#if !defined(__GNU_EXTENSION)
#if defined(__GNUC__) || defined(__GNUG__)
#define __GNU_EXTENSION __extension__
#else
#define __GNU_EXTENSION
#endif
#endif /* __extension__ */
#ifndef __ANONYMOUS_DEFINED
#define __ANONYMOUS_DEFINED
#if defined(__GNUC__) || defined(__GNUG__)
#define _ANONYMOUS_UNION __extension__
#define _ANONYMOUS_STRUCT __extension__
#else
#define _ANONYMOUS_UNION
#define _ANONYMOUS_STRUCT
#endif
#ifndef NONAMELESSUNION
#define _UNION_NAME(x)
#define _STRUCT_NAME(x)
#else /* NONAMELESSUNION */
#define _UNION_NAME(x) x
#define _STRUCT_NAME(x) x
#endif
#endif /* __ANONYMOUS_DEFINED */
#ifndef DUMMYUNIONNAME
# ifdef NONAMELESSUNION
# define DUMMYUNIONNAME u
# define DUMMYUNIONNAME1 u1 /* Wine uses this variant */
# define DUMMYUNIONNAME2 u2
# define DUMMYUNIONNAME3 u3
# define DUMMYUNIONNAME4 u4
# define DUMMYUNIONNAME5 u5
# define DUMMYUNIONNAME6 u6
# define DUMMYUNIONNAME7 u7
# define DUMMYUNIONNAME8 u8
# define DUMMYUNIONNAME9 u9
# else /* NONAMELESSUNION */
# define DUMMYUNIONNAME
# define DUMMYUNIONNAME1 /* Wine uses this variant */
# define DUMMYUNIONNAME2
# define DUMMYUNIONNAME3
# define DUMMYUNIONNAME4
# define DUMMYUNIONNAME5
# define DUMMYUNIONNAME6
# define DUMMYUNIONNAME7
# define DUMMYUNIONNAME8
# define DUMMYUNIONNAME9
# endif
#endif /* DUMMYUNIONNAME */
#if !defined(DUMMYUNIONNAME1) /* MinGW does not define this one */
# ifdef NONAMELESSUNION
# define DUMMYUNIONNAME1 u1 /* Wine uses this variant */
# else
# define DUMMYUNIONNAME1 /* Wine uses this variant */
# endif
#endif /* DUMMYUNIONNAME1 */
#ifndef DUMMYSTRUCTNAME
# ifdef NONAMELESSUNION
# define DUMMYSTRUCTNAME s
# define DUMMYSTRUCTNAME1 s1 /* Wine uses this variant */
# define DUMMYSTRUCTNAME2 s2
# define DUMMYSTRUCTNAME3 s3
# define DUMMYSTRUCTNAME4 s4
# define DUMMYSTRUCTNAME5 s5
# else
# define DUMMYSTRUCTNAME
# define DUMMYSTRUCTNAME1 /* Wine uses this variant */
# define DUMMYSTRUCTNAME2
# define DUMMYSTRUCTNAME3
# define DUMMYSTRUCTNAME4
# define DUMMYSTRUCTNAME5
# endif
#endif /* DUMMYSTRUCTNAME */
/* These are for compatibility with the Wine source tree */
#ifndef WINELIB_NAME_AW
# ifdef __MINGW_NAME_AW
# define WINELIB_NAME_AW __MINGW_NAME_AW
# else
# ifdef UNICODE
# define WINELIB_NAME_AW(func) func##W
# else
# define WINELIB_NAME_AW(func) func##A
# endif
# endif
#endif /* WINELIB_NAME_AW */
#ifndef DECL_WINELIB_TYPE_AW
# ifdef __MINGW_TYPEDEF_AW
# define DECL_WINELIB_TYPE_AW __MINGW_TYPEDEF_AW
# else
# define DECL_WINELIB_TYPE_AW(type) typedef WINELIB_NAME_AW(type) type;
# endif
#endif /* DECL_WINELIB_TYPE_AW */

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/*
* The Wine project - Xinput Joystick Library
* Copyright 2008 Andrew Fenn
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifndef __WINE_XINPUT_H
#define __WINE_XINPUT_H
#include <windef.h>
/*
* Bitmasks for the joysticks buttons, determines what has
* been pressed on the joystick, these need to be mapped
* to whatever device you're using instead of an xbox 360
* joystick
*/
#define XINPUT_GAMEPAD_DPAD_UP 0x0001
#define XINPUT_GAMEPAD_DPAD_DOWN 0x0002
#define XINPUT_GAMEPAD_DPAD_LEFT 0x0004
#define XINPUT_GAMEPAD_DPAD_RIGHT 0x0008
#define XINPUT_GAMEPAD_START 0x0010
#define XINPUT_GAMEPAD_BACK 0x0020
#define XINPUT_GAMEPAD_LEFT_THUMB 0x0040
#define XINPUT_GAMEPAD_RIGHT_THUMB 0x0080
#define XINPUT_GAMEPAD_LEFT_SHOULDER 0x0100
#define XINPUT_GAMEPAD_RIGHT_SHOULDER 0x0200
#define XINPUT_GAMEPAD_A 0x1000
#define XINPUT_GAMEPAD_B 0x2000
#define XINPUT_GAMEPAD_X 0x4000
#define XINPUT_GAMEPAD_Y 0x8000
/*
* Defines the flags used to determine if the user is pushing
* down on a button, not holding a button, etc
*/
#define XINPUT_KEYSTROKE_KEYDOWN 0x0001
#define XINPUT_KEYSTROKE_KEYUP 0x0002
#define XINPUT_KEYSTROKE_REPEAT 0x0004
/*
* Defines the codes which are returned by XInputGetKeystroke
*/
#define VK_PAD_A 0x5800
#define VK_PAD_B 0x5801
#define VK_PAD_X 0x5802
#define VK_PAD_Y 0x5803
#define VK_PAD_RSHOULDER 0x5804
#define VK_PAD_LSHOULDER 0x5805
#define VK_PAD_LTRIGGER 0x5806
#define VK_PAD_RTRIGGER 0x5807
#define VK_PAD_DPAD_UP 0x5810
#define VK_PAD_DPAD_DOWN 0x5811
#define VK_PAD_DPAD_LEFT 0x5812
#define VK_PAD_DPAD_RIGHT 0x5813
#define VK_PAD_START 0x5814
#define VK_PAD_BACK 0x5815
#define VK_PAD_LTHUMB_PRESS 0x5816
#define VK_PAD_RTHUMB_PRESS 0x5817
#define VK_PAD_LTHUMB_UP 0x5820
#define VK_PAD_LTHUMB_DOWN 0x5821
#define VK_PAD_LTHUMB_RIGHT 0x5822
#define VK_PAD_LTHUMB_LEFT 0x5823
#define VK_PAD_LTHUMB_UPLEFT 0x5824
#define VK_PAD_LTHUMB_UPRIGHT 0x5825
#define VK_PAD_LTHUMB_DOWNRIGHT 0x5826
#define VK_PAD_LTHUMB_DOWNLEFT 0x5827
#define VK_PAD_RTHUMB_UP 0x5830
#define VK_PAD_RTHUMB_DOWN 0x5831
#define VK_PAD_RTHUMB_RIGHT 0x5832
#define VK_PAD_RTHUMB_LEFT 0x5833
#define VK_PAD_RTHUMB_UPLEFT 0x5834
#define VK_PAD_RTHUMB_UPRIGHT 0x5835
#define VK_PAD_RTHUMB_DOWNRIGHT 0x5836
#define VK_PAD_RTHUMB_DOWNLEFT 0x5837
/*
* Deadzones are for analogue joystick controls on the joypad
* which determine when input should be assumed to be in the
* middle of the pad. This is a threshold to stop a joypad
* controlling the game when the player isn't touching the
* controls.
*/
#define XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE 7849
#define XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE 8689
#define XINPUT_GAMEPAD_TRIGGER_THRESHOLD 30
/*
* Defines what type of abilities the type of joystick has
* DEVTYPE_GAMEPAD is available for all joysticks, however
* there may be more specific identifiers for other joysticks
* which are being used.
*/
#define XINPUT_DEVTYPE_GAMEPAD 0x01
#define XINPUT_DEVSUBTYPE_GAMEPAD 0x01
#define XINPUT_DEVSUBTYPE_WHEEL 0x02
#define XINPUT_DEVSUBTYPE_ARCADE_STICK 0x03
#define XINPUT_DEVSUBTYPE_FLIGHT_SICK 0x04
#define XINPUT_DEVSUBTYPE_DANCE_PAD 0x05
#define XINPUT_DEVSUBTYPE_GUITAR 0x06
#define XINPUT_DEVSUBTYPE_DRUM_KIT 0x08
/*
* These are used with the XInputGetCapabilities function to
* determine the abilities to the joystick which has been
* plugged in.
*/
#define XINPUT_CAPS_VOICE_SUPPORTED 0x0004
#define XINPUT_FLAG_GAMEPAD 0x00000001
/*
* Defines the status of the battery if one is used in the
* attached joystick. The first two define if the joystick
* supports a battery. Disconnected means that the joystick
* isn't connected. Wired shows that the joystick is a wired
* joystick.
*/
#define BATTERY_DEVTYPE_GAMEPAD 0x00
#define BATTERY_DEVTYPE_HEADSET 0x01
#define BATTERY_TYPE_DISCONNECTED 0x00
#define BATTERY_TYPE_WIRED 0x01
#define BATTERY_TYPE_ALKALINE 0x02
#define BATTERY_TYPE_NIMH 0x03
#define BATTERY_TYPE_UNKNOWN 0xFF
#define BATTERY_LEVEL_EMPTY 0x00
#define BATTERY_LEVEL_LOW 0x01
#define BATTERY_LEVEL_MEDIUM 0x02
#define BATTERY_LEVEL_FULL 0x03
/*
* How many joysticks can be used with this library. Games that
* use the xinput library will not go over this number.
*/
#define XUSER_MAX_COUNT 4
#define XUSER_INDEX_ANY 0x000000FF
/*
* Defines the structure of an xbox 360 joystick.
*/
typedef struct _XINPUT_GAMEPAD {
WORD wButtons;
BYTE bLeftTrigger;
BYTE bRightTrigger;
SHORT sThumbLX;
SHORT sThumbLY;
SHORT sThumbRX;
SHORT sThumbRY;
} XINPUT_GAMEPAD, *PXINPUT_GAMEPAD;
typedef struct _XINPUT_STATE {
DWORD dwPacketNumber;
XINPUT_GAMEPAD Gamepad;
} XINPUT_STATE, *PXINPUT_STATE;
/*
* Defines the structure of how much vibration is set on both the
* right and left motors in a joystick. If you're not using a 360
* joystick you will have to map these to your device.
*/
typedef struct _XINPUT_VIBRATION {
WORD wLeftMotorSpeed;
WORD wRightMotorSpeed;
} XINPUT_VIBRATION, *PXINPUT_VIBRATION;
/*
* Defines the structure for what kind of abilities the joystick has
* such abilities are things such as if the joystick has the ability
* to send and receive audio, if the joystick is in fact a driving
* wheel or perhaps if the joystick is some kind of dance pad or
* guitar.
*/
typedef struct _XINPUT_CAPABILITIES {
BYTE Type;
BYTE SubType;
WORD Flags;
XINPUT_GAMEPAD Gamepad;
XINPUT_VIBRATION Vibration;
} XINPUT_CAPABILITIES, *PXINPUT_CAPABILITIES;
/*
* Defines the structure for a joystick input event which is
* retrieved using the function XInputGetKeystroke
*/
typedef struct _XINPUT_KEYSTROKE {
WORD VirtualKey;
WCHAR Unicode;
WORD Flags;
BYTE UserIndex;
BYTE HidCode;
} XINPUT_KEYSTROKE, *PXINPUT_KEYSTROKE;
typedef struct _XINPUT_BATTERY_INFORMATION
{
BYTE BatteryType;
BYTE BatteryLevel;
} XINPUT_BATTERY_INFORMATION, *PXINPUT_BATTERY_INFORMATION;
#ifdef __cplusplus
extern "C" {
#endif
void WINAPI XInputEnable(WINBOOL);
DWORD WINAPI XInputSetState(DWORD, XINPUT_VIBRATION*);
DWORD WINAPI XInputGetState(DWORD, XINPUT_STATE*);
DWORD WINAPI XInputGetKeystroke(DWORD, DWORD, PXINPUT_KEYSTROKE);
DWORD WINAPI XInputGetCapabilities(DWORD, DWORD, XINPUT_CAPABILITIES*);
DWORD WINAPI XInputGetDSoundAudioDeviceGuids(DWORD, GUID*, GUID*);
DWORD WINAPI XInputGetBatteryInformation(DWORD, BYTE, XINPUT_BATTERY_INFORMATION*);
#ifdef __cplusplus
}
#endif
#endif /* __WINE_XINPUT_H */

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/*
* Nuklear - v1.32.0 - public domain
* no warrenty implied; use at your own risk.
* authored from 2015-2017 by Micha Mettke
*/
/*
* ==============================================================
*
* API
*
* ===============================================================
*/
#ifndef NK_GLFW_GL2_H_
#define NK_GLFW_GL2_H_
#include <GLFW/glfw3.h>
enum nk_glfw_init_state{
NK_GLFW3_DEFAULT = 0,
NK_GLFW3_INSTALL_CALLBACKS
};
NK_API struct nk_context* nk_glfw3_init(GLFWwindow *win, enum nk_glfw_init_state);
NK_API void nk_glfw3_font_stash_begin(struct nk_font_atlas **atlas);
NK_API void nk_glfw3_font_stash_end(void);
NK_API void nk_glfw3_new_frame(void);
NK_API void nk_glfw3_render(enum nk_anti_aliasing);
NK_API void nk_glfw3_shutdown(void);
NK_API void nk_glfw3_char_callback(GLFWwindow *win, unsigned int codepoint);
NK_API void nk_gflw3_scroll_callback(GLFWwindow *win, double xoff, double yoff);
#endif
/*
* ==============================================================
*
* IMPLEMENTATION
*
* ===============================================================
*/
#ifdef NK_GLFW_GL2_IMPLEMENTATION
#ifndef NK_GLFW_TEXT_MAX
#define NK_GLFW_TEXT_MAX 256
#endif
#ifndef NK_GLFW_DOUBLE_CLICK_LO
#define NK_GLFW_DOUBLE_CLICK_LO 0.02
#endif
#ifndef NK_GLFW_DOUBLE_CLICK_HI
#define NK_GLFW_DOUBLE_CLICK_HI 0.2
#endif
struct nk_glfw_device {
struct nk_buffer cmds;
struct nk_draw_null_texture null;
GLuint font_tex;
};
struct nk_glfw_vertex {
float position[2];
float uv[2];
nk_byte col[4];
};
static struct nk_glfw {
GLFWwindow *win;
int width, height;
int display_width, display_height;
struct nk_glfw_device ogl;
struct nk_context ctx;
struct nk_font_atlas atlas;
struct nk_vec2 fb_scale;
unsigned int text[NK_GLFW_TEXT_MAX];
int text_len;
struct nk_vec2 scroll;
double last_button_click;
int is_double_click_down;
struct nk_vec2 double_click_pos;
} glfw;
NK_INTERN void
nk_glfw3_device_upload_atlas(const void *image, int width, int height)
{
struct nk_glfw_device *dev = &glfw.ogl;
glGenTextures(1, &dev->font_tex);
glBindTexture(GL_TEXTURE_2D, dev->font_tex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0,
GL_RGBA, GL_UNSIGNED_BYTE, image);
}
NK_API void
nk_glfw3_render(enum nk_anti_aliasing AA)
{
/* setup global state */
struct nk_glfw_device *dev = &glfw.ogl;
glPushAttrib(GL_ENABLE_BIT|GL_COLOR_BUFFER_BIT|GL_TRANSFORM_BIT);
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glEnable(GL_SCISSOR_TEST);
glEnable(GL_BLEND);
glEnable(GL_TEXTURE_2D);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
/* setup viewport/project */
glViewport(0,0,(GLsizei)glfw.display_width,(GLsizei)glfw.display_height);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glOrtho(0.0f, glfw.width, glfw.height, 0.0f, -1.0f, 1.0f);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
{
GLsizei vs = sizeof(struct nk_glfw_vertex);
size_t vp = offsetof(struct nk_glfw_vertex, position);
size_t vt = offsetof(struct nk_glfw_vertex, uv);
size_t vc = offsetof(struct nk_glfw_vertex, col);
/* convert from command queue into draw list and draw to screen */
const struct nk_draw_command *cmd;
const nk_draw_index *offset = NULL;
struct nk_buffer vbuf, ebuf;
/* fill convert configuration */
struct nk_convert_config config;
static const struct nk_draw_vertex_layout_element vertex_layout[] = {
{NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, position)},
{NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_glfw_vertex, uv)},
{NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_glfw_vertex, col)},
{NK_VERTEX_LAYOUT_END}
};
NK_MEMSET(&config, 0, sizeof(config));
config.vertex_layout = vertex_layout;
config.vertex_size = sizeof(struct nk_glfw_vertex);
config.vertex_alignment = NK_ALIGNOF(struct nk_glfw_vertex);
config.null = dev->null;
config.circle_segment_count = 22;
config.curve_segment_count = 22;
config.arc_segment_count = 22;
config.global_alpha = 1.0f;
config.shape_AA = AA;
config.line_AA = AA;
/* convert shapes into vertexes */
nk_buffer_init_default(&vbuf);
nk_buffer_init_default(&ebuf);
nk_convert(&glfw.ctx, &dev->cmds, &vbuf, &ebuf, &config);
/* setup vertex buffer pointer */
{const void *vertices = nk_buffer_memory_const(&vbuf);
glVertexPointer(2, GL_FLOAT, vs, (const void*)((const nk_byte*)vertices + vp));
glTexCoordPointer(2, GL_FLOAT, vs, (const void*)((const nk_byte*)vertices + vt));
glColorPointer(4, GL_UNSIGNED_BYTE, vs, (const void*)((const nk_byte*)vertices + vc));}
/* iterate over and execute each draw command */
offset = (const nk_draw_index*)nk_buffer_memory_const(&ebuf);
nk_draw_foreach(cmd, &glfw.ctx, &dev->cmds)
{
if (!cmd->elem_count) continue;
glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id);
glScissor(
(GLint)(cmd->clip_rect.x * glfw.fb_scale.x),
(GLint)((glfw.height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h)) * glfw.fb_scale.y),
(GLint)(cmd->clip_rect.w * glfw.fb_scale.x),
(GLint)(cmd->clip_rect.h * glfw.fb_scale.y));
glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset);
offset += cmd->elem_count;
}
nk_clear(&glfw.ctx);
nk_buffer_free(&vbuf);
nk_buffer_free(&ebuf);
}
/* default OpenGL state */
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glDisable(GL_SCISSOR_TEST);
glDisable(GL_BLEND);
glDisable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, 0);
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glPopAttrib();
}
NK_API void
nk_glfw3_char_callback(GLFWwindow *win, unsigned int codepoint)
{
(void)win;
if (glfw.text_len < NK_GLFW_TEXT_MAX)
glfw.text[glfw.text_len++] = codepoint;
}
NK_API void
nk_gflw3_scroll_callback(GLFWwindow *win, double xoff, double yoff)
{
(void)win; (void)xoff;
glfw.scroll.x += (float)xoff;
glfw.scroll.y += (float)yoff;
}
NK_API void
nk_glfw3_mouse_button_callback(GLFWwindow* window, int button, int action, int mods)
{
double x, y;
if (button != GLFW_MOUSE_BUTTON_LEFT) return;
glfwGetCursorPos(window, &x, &y);
if (action == GLFW_PRESS) {
double dt = glfwGetTime() - glfw.last_button_click;
if (dt > NK_GLFW_DOUBLE_CLICK_LO && dt < NK_GLFW_DOUBLE_CLICK_HI) {
glfw.is_double_click_down = nk_true;
glfw.double_click_pos = nk_vec2((float)x, (float)y);
}
glfw.last_button_click = glfwGetTime();
} else glfw.is_double_click_down = nk_false;
}
NK_INTERN void
nk_glfw3_clipbard_paste(nk_handle usr, struct nk_text_edit *edit)
{
const char *text = glfwGetClipboardString(glfw.win);
if (text) nk_textedit_paste(edit, text, nk_strlen(text));
(void)usr;
}
NK_INTERN void
nk_glfw3_clipbard_copy(nk_handle usr, const char *text, int len)
{
char *str = 0;
(void)usr;
if (!len) return;
str = (char*)malloc((size_t)len+1);
if (!str) return;
NK_MEMCPY(str, text, (size_t)len);
str[len] = '\0';
glfwSetClipboardString(glfw.win, str);
free(str);
}
NK_API struct nk_context*
nk_glfw3_init(GLFWwindow *win, enum nk_glfw_init_state init_state)
{
glfw.win = win;
if (init_state == NK_GLFW3_INSTALL_CALLBACKS) {
glfwSetScrollCallback(win, nk_gflw3_scroll_callback);
glfwSetCharCallback(win, nk_glfw3_char_callback);
glfwSetMouseButtonCallback(win, nk_glfw3_mouse_button_callback);
}
nk_init_default(&glfw.ctx, 0);
glfw.ctx.clip.copy = nk_glfw3_clipbard_copy;
glfw.ctx.clip.paste = nk_glfw3_clipbard_paste;
glfw.ctx.clip.userdata = nk_handle_ptr(0);
nk_buffer_init_default(&glfw.ogl.cmds);
glfw.is_double_click_down = nk_false;
glfw.double_click_pos = nk_vec2(0, 0);
return &glfw.ctx;
}
NK_API void
nk_glfw3_font_stash_begin(struct nk_font_atlas **atlas)
{
nk_font_atlas_init_default(&glfw.atlas);
nk_font_atlas_begin(&glfw.atlas);
*atlas = &glfw.atlas;
}
NK_API void
nk_glfw3_font_stash_end(void)
{
const void *image; int w, h;
image = nk_font_atlas_bake(&glfw.atlas, &w, &h, NK_FONT_ATLAS_RGBA32);
nk_glfw3_device_upload_atlas(image, w, h);
nk_font_atlas_end(&glfw.atlas, nk_handle_id((int)glfw.ogl.font_tex), &glfw.ogl.null);
if (glfw.atlas.default_font)
nk_style_set_font(&glfw.ctx, &glfw.atlas.default_font->handle);
}
NK_API void
nk_glfw3_new_frame(void)
{
int i;
double x, y;
struct nk_context *ctx = &glfw.ctx;
struct GLFWwindow *win = glfw.win;
glfwGetWindowSize(win, &glfw.width, &glfw.height);
glfwGetFramebufferSize(win, &glfw.display_width, &glfw.display_height);
glfw.fb_scale.x = (float)glfw.display_width/(float)glfw.width;
glfw.fb_scale.y = (float)glfw.display_height/(float)glfw.height;
nk_input_begin(ctx);
for (i = 0; i < glfw.text_len; ++i)
nk_input_unicode(ctx, glfw.text[i]);
/* optional grabbing behavior */
if (ctx->input.mouse.grab)
glfwSetInputMode(glfw.win, GLFW_CURSOR, GLFW_CURSOR_HIDDEN);
else if (ctx->input.mouse.ungrab)
glfwSetInputMode(glfw.win, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
nk_input_key(ctx, NK_KEY_DEL, glfwGetKey(win, GLFW_KEY_DELETE) == GLFW_PRESS);
nk_input_key(ctx, NK_KEY_ENTER, glfwGetKey(win, GLFW_KEY_ENTER) == GLFW_PRESS);
nk_input_key(ctx, NK_KEY_TAB, glfwGetKey(win, GLFW_KEY_TAB) == GLFW_PRESS);
nk_input_key(ctx, NK_KEY_BACKSPACE, glfwGetKey(win, GLFW_KEY_BACKSPACE) == GLFW_PRESS);
nk_input_key(ctx, NK_KEY_UP, glfwGetKey(win, GLFW_KEY_UP) == GLFW_PRESS);
nk_input_key(ctx, NK_KEY_DOWN, glfwGetKey(win, GLFW_KEY_DOWN) == GLFW_PRESS);
nk_input_key(ctx, NK_KEY_TEXT_START, glfwGetKey(win, GLFW_KEY_HOME) == GLFW_PRESS);
nk_input_key(ctx, NK_KEY_TEXT_END, glfwGetKey(win, GLFW_KEY_END) == GLFW_PRESS);
nk_input_key(ctx, NK_KEY_SCROLL_START, glfwGetKey(win, GLFW_KEY_HOME) == GLFW_PRESS);
nk_input_key(ctx, NK_KEY_SCROLL_END, glfwGetKey(win, GLFW_KEY_END) == GLFW_PRESS);
nk_input_key(ctx, NK_KEY_SCROLL_DOWN, glfwGetKey(win, GLFW_KEY_PAGE_DOWN) == GLFW_PRESS);
nk_input_key(ctx, NK_KEY_SCROLL_UP, glfwGetKey(win, GLFW_KEY_PAGE_UP) == GLFW_PRESS);
nk_input_key(ctx, NK_KEY_SHIFT, glfwGetKey(win, GLFW_KEY_LEFT_SHIFT) == GLFW_PRESS||
glfwGetKey(win, GLFW_KEY_RIGHT_SHIFT) == GLFW_PRESS);
if (glfwGetKey(win, GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS ||
glfwGetKey(win, GLFW_KEY_RIGHT_CONTROL) == GLFW_PRESS) {
nk_input_key(ctx, NK_KEY_COPY, glfwGetKey(win, GLFW_KEY_C) == GLFW_PRESS);
nk_input_key(ctx, NK_KEY_PASTE, glfwGetKey(win, GLFW_KEY_V) == GLFW_PRESS);
nk_input_key(ctx, NK_KEY_CUT, glfwGetKey(win, GLFW_KEY_X) == GLFW_PRESS);
nk_input_key(ctx, NK_KEY_TEXT_UNDO, glfwGetKey(win, GLFW_KEY_Z) == GLFW_PRESS);
nk_input_key(ctx, NK_KEY_TEXT_REDO, glfwGetKey(win, GLFW_KEY_R) == GLFW_PRESS);
nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS);
nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS);
nk_input_key(ctx, NK_KEY_TEXT_LINE_START, glfwGetKey(win, GLFW_KEY_B) == GLFW_PRESS);
nk_input_key(ctx, NK_KEY_TEXT_LINE_END, glfwGetKey(win, GLFW_KEY_E) == GLFW_PRESS);
} else {
nk_input_key(ctx, NK_KEY_LEFT, glfwGetKey(win, GLFW_KEY_LEFT) == GLFW_PRESS);
nk_input_key(ctx, NK_KEY_RIGHT, glfwGetKey(win, GLFW_KEY_RIGHT) == GLFW_PRESS);
nk_input_key(ctx, NK_KEY_COPY, 0);
nk_input_key(ctx, NK_KEY_PASTE, 0);
nk_input_key(ctx, NK_KEY_CUT, 0);
nk_input_key(ctx, NK_KEY_SHIFT, 0);
}
glfwGetCursorPos(win, &x, &y);
nk_input_motion(ctx, (int)x, (int)y);
if (ctx->input.mouse.grabbed) {
glfwSetCursorPos(glfw.win, (double)ctx->input.mouse.prev.x, (double)ctx->input.mouse.prev.y);
ctx->input.mouse.pos.x = ctx->input.mouse.prev.x;
ctx->input.mouse.pos.y = ctx->input.mouse.prev.y;
}
nk_input_button(ctx, NK_BUTTON_LEFT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_LEFT) == GLFW_PRESS);
nk_input_button(ctx, NK_BUTTON_MIDDLE, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_MIDDLE) == GLFW_PRESS);
nk_input_button(ctx, NK_BUTTON_RIGHT, (int)x, (int)y, glfwGetMouseButton(win, GLFW_MOUSE_BUTTON_RIGHT) == GLFW_PRESS);
nk_input_button(ctx, NK_BUTTON_DOUBLE, (int)glfw.double_click_pos.x, (int)glfw.double_click_pos.y, glfw.is_double_click_down);
nk_input_scroll(ctx, glfw.scroll);
nk_input_end(&glfw.ctx);
glfw.text_len = 0;
glfw.scroll = nk_vec2(0,0);
}
NK_API
void nk_glfw3_shutdown(void)
{
struct nk_glfw_device *dev = &glfw.ogl;
nk_font_atlas_clear(&glfw.atlas);
nk_free(&glfw.ctx);
glDeleteTextures(1, &dev->font_tex);
nk_buffer_free(&dev->cmds);
NK_MEMSET(&glfw, 0, sizeof(glfw));
}
#endif

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/* -*- mode: c; tab-width: 2; indent-tabs-mode: nil; -*-
Copyright (c) 2012 Marcus Geelnard
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source
distribution.
*/
/* 2013-01-06 Camilla Löwy <elmindreda@glfw.org>
*
* Added casts from time_t to DWORD to avoid warnings on VC++.
* Fixed time retrieval on POSIX systems.
*/
#include "tinycthread.h"
#include <stdlib.h>
/* Platform specific includes */
#if defined(_TTHREAD_POSIX_)
#include <signal.h>
#include <sched.h>
#include <unistd.h>
#include <sys/time.h>
#include <errno.h>
#elif defined(_TTHREAD_WIN32_)
#include <process.h>
#include <sys/timeb.h>
#endif
/* Standard, good-to-have defines */
#ifndef NULL
#define NULL (void*)0
#endif
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
int mtx_init(mtx_t *mtx, int type)
{
#if defined(_TTHREAD_WIN32_)
mtx->mAlreadyLocked = FALSE;
mtx->mRecursive = type & mtx_recursive;
InitializeCriticalSection(&mtx->mHandle);
return thrd_success;
#else
int ret;
pthread_mutexattr_t attr;
pthread_mutexattr_init(&attr);
if (type & mtx_recursive)
{
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
}
ret = pthread_mutex_init(mtx, &attr);
pthread_mutexattr_destroy(&attr);
return ret == 0 ? thrd_success : thrd_error;
#endif
}
void mtx_destroy(mtx_t *mtx)
{
#if defined(_TTHREAD_WIN32_)
DeleteCriticalSection(&mtx->mHandle);
#else
pthread_mutex_destroy(mtx);
#endif
}
int mtx_lock(mtx_t *mtx)
{
#if defined(_TTHREAD_WIN32_)
EnterCriticalSection(&mtx->mHandle);
if (!mtx->mRecursive)
{
while(mtx->mAlreadyLocked) Sleep(1000); /* Simulate deadlock... */
mtx->mAlreadyLocked = TRUE;
}
return thrd_success;
#else
return pthread_mutex_lock(mtx) == 0 ? thrd_success : thrd_error;
#endif
}
int mtx_timedlock(mtx_t *mtx, const struct timespec *ts)
{
/* FIXME! */
(void)mtx;
(void)ts;
return thrd_error;
}
int mtx_trylock(mtx_t *mtx)
{
#if defined(_TTHREAD_WIN32_)
int ret = TryEnterCriticalSection(&mtx->mHandle) ? thrd_success : thrd_busy;
if ((!mtx->mRecursive) && (ret == thrd_success) && mtx->mAlreadyLocked)
{
LeaveCriticalSection(&mtx->mHandle);
ret = thrd_busy;
}
return ret;
#else
return (pthread_mutex_trylock(mtx) == 0) ? thrd_success : thrd_busy;
#endif
}
int mtx_unlock(mtx_t *mtx)
{
#if defined(_TTHREAD_WIN32_)
mtx->mAlreadyLocked = FALSE;
LeaveCriticalSection(&mtx->mHandle);
return thrd_success;
#else
return pthread_mutex_unlock(mtx) == 0 ? thrd_success : thrd_error;;
#endif
}
#if defined(_TTHREAD_WIN32_)
#define _CONDITION_EVENT_ONE 0
#define _CONDITION_EVENT_ALL 1
#endif
int cnd_init(cnd_t *cond)
{
#if defined(_TTHREAD_WIN32_)
cond->mWaitersCount = 0;
/* Init critical section */
InitializeCriticalSection(&cond->mWaitersCountLock);
/* Init events */
cond->mEvents[_CONDITION_EVENT_ONE] = CreateEvent(NULL, FALSE, FALSE, NULL);
if (cond->mEvents[_CONDITION_EVENT_ONE] == NULL)
{
cond->mEvents[_CONDITION_EVENT_ALL] = NULL;
return thrd_error;
}
cond->mEvents[_CONDITION_EVENT_ALL] = CreateEvent(NULL, TRUE, FALSE, NULL);
if (cond->mEvents[_CONDITION_EVENT_ALL] == NULL)
{
CloseHandle(cond->mEvents[_CONDITION_EVENT_ONE]);
cond->mEvents[_CONDITION_EVENT_ONE] = NULL;
return thrd_error;
}
return thrd_success;
#else
return pthread_cond_init(cond, NULL) == 0 ? thrd_success : thrd_error;
#endif
}
void cnd_destroy(cnd_t *cond)
{
#if defined(_TTHREAD_WIN32_)
if (cond->mEvents[_CONDITION_EVENT_ONE] != NULL)
{
CloseHandle(cond->mEvents[_CONDITION_EVENT_ONE]);
}
if (cond->mEvents[_CONDITION_EVENT_ALL] != NULL)
{
CloseHandle(cond->mEvents[_CONDITION_EVENT_ALL]);
}
DeleteCriticalSection(&cond->mWaitersCountLock);
#else
pthread_cond_destroy(cond);
#endif
}
int cnd_signal(cnd_t *cond)
{
#if defined(_TTHREAD_WIN32_)
int haveWaiters;
/* Are there any waiters? */
EnterCriticalSection(&cond->mWaitersCountLock);
haveWaiters = (cond->mWaitersCount > 0);
LeaveCriticalSection(&cond->mWaitersCountLock);
/* If we have any waiting threads, send them a signal */
if(haveWaiters)
{
if (SetEvent(cond->mEvents[_CONDITION_EVENT_ONE]) == 0)
{
return thrd_error;
}
}
return thrd_success;
#else
return pthread_cond_signal(cond) == 0 ? thrd_success : thrd_error;
#endif
}
int cnd_broadcast(cnd_t *cond)
{
#if defined(_TTHREAD_WIN32_)
int haveWaiters;
/* Are there any waiters? */
EnterCriticalSection(&cond->mWaitersCountLock);
haveWaiters = (cond->mWaitersCount > 0);
LeaveCriticalSection(&cond->mWaitersCountLock);
/* If we have any waiting threads, send them a signal */
if(haveWaiters)
{
if (SetEvent(cond->mEvents[_CONDITION_EVENT_ALL]) == 0)
{
return thrd_error;
}
}
return thrd_success;
#else
return pthread_cond_signal(cond) == 0 ? thrd_success : thrd_error;
#endif
}
#if defined(_TTHREAD_WIN32_)
static int _cnd_timedwait_win32(cnd_t *cond, mtx_t *mtx, DWORD timeout)
{
int result, lastWaiter;
/* Increment number of waiters */
EnterCriticalSection(&cond->mWaitersCountLock);
++ cond->mWaitersCount;
LeaveCriticalSection(&cond->mWaitersCountLock);
/* Release the mutex while waiting for the condition (will decrease
the number of waiters when done)... */
mtx_unlock(mtx);
/* Wait for either event to become signaled due to cnd_signal() or
cnd_broadcast() being called */
result = WaitForMultipleObjects(2, cond->mEvents, FALSE, timeout);
if (result == WAIT_TIMEOUT)
{
return thrd_timeout;
}
else if (result == (int)WAIT_FAILED)
{
return thrd_error;
}
/* Check if we are the last waiter */
EnterCriticalSection(&cond->mWaitersCountLock);
-- cond->mWaitersCount;
lastWaiter = (result == (WAIT_OBJECT_0 + _CONDITION_EVENT_ALL)) &&
(cond->mWaitersCount == 0);
LeaveCriticalSection(&cond->mWaitersCountLock);
/* If we are the last waiter to be notified to stop waiting, reset the event */
if (lastWaiter)
{
if (ResetEvent(cond->mEvents[_CONDITION_EVENT_ALL]) == 0)
{
return thrd_error;
}
}
/* Re-acquire the mutex */
mtx_lock(mtx);
return thrd_success;
}
#endif
int cnd_wait(cnd_t *cond, mtx_t *mtx)
{
#if defined(_TTHREAD_WIN32_)
return _cnd_timedwait_win32(cond, mtx, INFINITE);
#else
return pthread_cond_wait(cond, mtx) == 0 ? thrd_success : thrd_error;
#endif
}
int cnd_timedwait(cnd_t *cond, mtx_t *mtx, const struct timespec *ts)
{
#if defined(_TTHREAD_WIN32_)
struct timespec now;
if (clock_gettime(CLOCK_REALTIME, &now) == 0)
{
DWORD delta = (DWORD) ((ts->tv_sec - now.tv_sec) * 1000 +
(ts->tv_nsec - now.tv_nsec + 500000) / 1000000);
return _cnd_timedwait_win32(cond, mtx, delta);
}
else
return thrd_error;
#else
int ret;
ret = pthread_cond_timedwait(cond, mtx, ts);
if (ret == ETIMEDOUT)
{
return thrd_timeout;
}
return ret == 0 ? thrd_success : thrd_error;
#endif
}
/** Information to pass to the new thread (what to run). */
typedef struct {
thrd_start_t mFunction; /**< Pointer to the function to be executed. */
void * mArg; /**< Function argument for the thread function. */
} _thread_start_info;
/* Thread wrapper function. */
#if defined(_TTHREAD_WIN32_)
static unsigned WINAPI _thrd_wrapper_function(void * aArg)
#elif defined(_TTHREAD_POSIX_)
static void * _thrd_wrapper_function(void * aArg)
#endif
{
thrd_start_t fun;
void *arg;
int res;
#if defined(_TTHREAD_POSIX_)
void *pres;
#endif
/* Get thread startup information */
_thread_start_info *ti = (_thread_start_info *) aArg;
fun = ti->mFunction;
arg = ti->mArg;
/* The thread is responsible for freeing the startup information */
free((void *)ti);
/* Call the actual client thread function */
res = fun(arg);
#if defined(_TTHREAD_WIN32_)
return res;
#else
pres = malloc(sizeof(int));
if (pres != NULL)
{
*(int*)pres = res;
}
return pres;
#endif
}
int thrd_create(thrd_t *thr, thrd_start_t func, void *arg)
{
/* Fill out the thread startup information (passed to the thread wrapper,
which will eventually free it) */
_thread_start_info* ti = (_thread_start_info*)malloc(sizeof(_thread_start_info));
if (ti == NULL)
{
return thrd_nomem;
}
ti->mFunction = func;
ti->mArg = arg;
/* Create the thread */
#if defined(_TTHREAD_WIN32_)
*thr = (HANDLE)_beginthreadex(NULL, 0, _thrd_wrapper_function, (void *)ti, 0, NULL);
#elif defined(_TTHREAD_POSIX_)
if(pthread_create(thr, NULL, _thrd_wrapper_function, (void *)ti) != 0)
{
*thr = 0;
}
#endif
/* Did we fail to create the thread? */
if(!*thr)
{
free(ti);
return thrd_error;
}
return thrd_success;
}
thrd_t thrd_current(void)
{
#if defined(_TTHREAD_WIN32_)
return GetCurrentThread();
#else
return pthread_self();
#endif
}
int thrd_detach(thrd_t thr)
{
/* FIXME! */
(void)thr;
return thrd_error;
}
int thrd_equal(thrd_t thr0, thrd_t thr1)
{
#if defined(_TTHREAD_WIN32_)
return thr0 == thr1;
#else
return pthread_equal(thr0, thr1);
#endif
}
void thrd_exit(int res)
{
#if defined(_TTHREAD_WIN32_)
ExitThread(res);
#else
void *pres = malloc(sizeof(int));
if (pres != NULL)
{
*(int*)pres = res;
}
pthread_exit(pres);
#endif
}
int thrd_join(thrd_t thr, int *res)
{
#if defined(_TTHREAD_WIN32_)
if (WaitForSingleObject(thr, INFINITE) == WAIT_FAILED)
{
return thrd_error;
}
if (res != NULL)
{
DWORD dwRes;
GetExitCodeThread(thr, &dwRes);
*res = dwRes;
}
#elif defined(_TTHREAD_POSIX_)
void *pres;
int ires = 0;
if (pthread_join(thr, &pres) != 0)
{
return thrd_error;
}
if (pres != NULL)
{
ires = *(int*)pres;
free(pres);
}
if (res != NULL)
{
*res = ires;
}
#endif
return thrd_success;
}
int thrd_sleep(const struct timespec *time_point, struct timespec *remaining)
{
struct timespec now;
#if defined(_TTHREAD_WIN32_)
DWORD delta;
#else
long delta;
#endif
/* Get the current time */
if (clock_gettime(CLOCK_REALTIME, &now) != 0)
return -2; // FIXME: Some specific error code?
#if defined(_TTHREAD_WIN32_)
/* Delta in milliseconds */
delta = (DWORD) ((time_point->tv_sec - now.tv_sec) * 1000 +
(time_point->tv_nsec - now.tv_nsec + 500000) / 1000000);
if (delta > 0)
{
Sleep(delta);
}
#else
/* Delta in microseconds */
delta = (time_point->tv_sec - now.tv_sec) * 1000000L +
(time_point->tv_nsec - now.tv_nsec + 500L) / 1000L;
/* On some systems, the usleep argument must be < 1000000 */
while (delta > 999999L)
{
usleep(999999);
delta -= 999999L;
}
if (delta > 0L)
{
usleep((useconds_t)delta);
}
#endif
/* We don't support waking up prematurely (yet) */
if (remaining)
{
remaining->tv_sec = 0;
remaining->tv_nsec = 0;
}
return 0;
}
void thrd_yield(void)
{
#if defined(_TTHREAD_WIN32_)
Sleep(0);
#else
sched_yield();
#endif
}
int tss_create(tss_t *key, tss_dtor_t dtor)
{
#if defined(_TTHREAD_WIN32_)
/* FIXME: The destructor function is not supported yet... */
if (dtor != NULL)
{
return thrd_error;
}
*key = TlsAlloc();
if (*key == TLS_OUT_OF_INDEXES)
{
return thrd_error;
}
#else
if (pthread_key_create(key, dtor) != 0)
{
return thrd_error;
}
#endif
return thrd_success;
}
void tss_delete(tss_t key)
{
#if defined(_TTHREAD_WIN32_)
TlsFree(key);
#else
pthread_key_delete(key);
#endif
}
void *tss_get(tss_t key)
{
#if defined(_TTHREAD_WIN32_)
return TlsGetValue(key);
#else
return pthread_getspecific(key);
#endif
}
int tss_set(tss_t key, void *val)
{
#if defined(_TTHREAD_WIN32_)
if (TlsSetValue(key, val) == 0)
{
return thrd_error;
}
#else
if (pthread_setspecific(key, val) != 0)
{
return thrd_error;
}
#endif
return thrd_success;
}
#if defined(_TTHREAD_EMULATE_CLOCK_GETTIME_)
int _tthread_clock_gettime(clockid_t clk_id, struct timespec *ts)
{
#if defined(_TTHREAD_WIN32_)
struct _timeb tb;
_ftime(&tb);
ts->tv_sec = (time_t)tb.time;
ts->tv_nsec = 1000000L * (long)tb.millitm;
#else
struct timeval tv;
gettimeofday(&tv, NULL);
ts->tv_sec = (time_t)tv.tv_sec;
ts->tv_nsec = 1000L * (long)tv.tv_usec;
#endif
return 0;
}
#endif // _TTHREAD_EMULATE_CLOCK_GETTIME_

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@@ -0,0 +1,443 @@
/* -*- mode: c; tab-width: 2; indent-tabs-mode: nil; -*-
Copyright (c) 2012 Marcus Geelnard
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source
distribution.
*/
#ifndef _TINYCTHREAD_H_
#define _TINYCTHREAD_H_
/**
* @file
* @mainpage TinyCThread API Reference
*
* @section intro_sec Introduction
* TinyCThread is a minimal, portable implementation of basic threading
* classes for C.
*
* They closely mimic the functionality and naming of the C11 standard, and
* should be easily replaceable with the corresponding standard variants.
*
* @section port_sec Portability
* The Win32 variant uses the native Win32 API for implementing the thread
* classes, while for other systems, the POSIX threads API (pthread) is used.
*
* @section misc_sec Miscellaneous
* The following special keywords are available: #_Thread_local.
*
* For more detailed information, browse the different sections of this
* documentation. A good place to start is:
* tinycthread.h.
*/
/* Which platform are we on? */
#if !defined(_TTHREAD_PLATFORM_DEFINED_)
#if defined(_WIN32) || defined(__WIN32__) || defined(__WINDOWS__)
#define _TTHREAD_WIN32_
#else
#define _TTHREAD_POSIX_
#endif
#define _TTHREAD_PLATFORM_DEFINED_
#endif
/* Activate some POSIX functionality (e.g. clock_gettime and recursive mutexes) */
#if defined(_TTHREAD_POSIX_)
#undef _FEATURES_H
#if !defined(_GNU_SOURCE)
#define _GNU_SOURCE
#endif
#if !defined(_POSIX_C_SOURCE) || ((_POSIX_C_SOURCE - 0) < 199309L)
#undef _POSIX_C_SOURCE
#define _POSIX_C_SOURCE 199309L
#endif
#if !defined(_XOPEN_SOURCE) || ((_XOPEN_SOURCE - 0) < 500)
#undef _XOPEN_SOURCE
#define _XOPEN_SOURCE 500
#endif
#endif
/* Generic includes */
#include <time.h>
/* Platform specific includes */
#if defined(_TTHREAD_POSIX_)
#include <sys/time.h>
#include <pthread.h>
#elif defined(_TTHREAD_WIN32_)
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#define __UNDEF_LEAN_AND_MEAN
#endif
#include <windows.h>
#ifdef __UNDEF_LEAN_AND_MEAN
#undef WIN32_LEAN_AND_MEAN
#undef __UNDEF_LEAN_AND_MEAN
#endif
#endif
/* Workaround for missing TIME_UTC: If time.h doesn't provide TIME_UTC,
it's quite likely that libc does not support it either. Hence, fall back to
the only other supported time specifier: CLOCK_REALTIME (and if that fails,
we're probably emulating clock_gettime anyway, so anything goes). */
#ifndef TIME_UTC
#ifdef CLOCK_REALTIME
#define TIME_UTC CLOCK_REALTIME
#else
#define TIME_UTC 0
#endif
#endif
/* Workaround for missing clock_gettime (most Windows compilers, afaik) */
#if defined(_TTHREAD_WIN32_) || defined(__APPLE_CC__)
#define _TTHREAD_EMULATE_CLOCK_GETTIME_
/* Emulate struct timespec */
#if defined(_TTHREAD_WIN32_)
struct _ttherad_timespec {
time_t tv_sec;
long tv_nsec;
};
#define timespec _ttherad_timespec
#endif
/* Emulate clockid_t */
typedef int _tthread_clockid_t;
#define clockid_t _tthread_clockid_t
/* Emulate clock_gettime */
int _tthread_clock_gettime(clockid_t clk_id, struct timespec *ts);
#define clock_gettime _tthread_clock_gettime
#ifndef CLOCK_REALTIME
#define CLOCK_REALTIME 0
#endif
#endif
/** TinyCThread version (major number). */
#define TINYCTHREAD_VERSION_MAJOR 1
/** TinyCThread version (minor number). */
#define TINYCTHREAD_VERSION_MINOR 1
/** TinyCThread version (full version). */
#define TINYCTHREAD_VERSION (TINYCTHREAD_VERSION_MAJOR * 100 + TINYCTHREAD_VERSION_MINOR)
/**
* @def _Thread_local
* Thread local storage keyword.
* A variable that is declared with the @c _Thread_local keyword makes the
* value of the variable local to each thread (known as thread-local storage,
* or TLS). Example usage:
* @code
* // This variable is local to each thread.
* _Thread_local int variable;
* @endcode
* @note The @c _Thread_local keyword is a macro that maps to the corresponding
* compiler directive (e.g. @c __declspec(thread)).
* @note This directive is currently not supported on Mac OS X (it will give
* a compiler error), since compile-time TLS is not supported in the Mac OS X
* executable format. Also, some older versions of MinGW (before GCC 4.x) do
* not support this directive.
* @hideinitializer
*/
/* FIXME: Check for a PROPER value of __STDC_VERSION__ to know if we have C11 */
#if !(defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201102L)) && !defined(_Thread_local)
#if defined(__GNUC__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_CC) || defined(__IBMCPP__)
#define _Thread_local __thread
#else
#define _Thread_local __declspec(thread)
#endif
#endif
/* Macros */
#define TSS_DTOR_ITERATIONS 0
/* Function return values */
#define thrd_error 0 /**< The requested operation failed */
#define thrd_success 1 /**< The requested operation succeeded */
#define thrd_timeout 2 /**< The time specified in the call was reached without acquiring the requested resource */
#define thrd_busy 3 /**< The requested operation failed because a tesource requested by a test and return function is already in use */
#define thrd_nomem 4 /**< The requested operation failed because it was unable to allocate memory */
/* Mutex types */
#define mtx_plain 1
#define mtx_timed 2
#define mtx_try 4
#define mtx_recursive 8
/* Mutex */
#if defined(_TTHREAD_WIN32_)
typedef struct {
CRITICAL_SECTION mHandle; /* Critical section handle */
int mAlreadyLocked; /* TRUE if the mutex is already locked */
int mRecursive; /* TRUE if the mutex is recursive */
} mtx_t;
#else
typedef pthread_mutex_t mtx_t;
#endif
/** Create a mutex object.
* @param mtx A mutex object.
* @param type Bit-mask that must have one of the following six values:
* @li @c mtx_plain for a simple non-recursive mutex
* @li @c mtx_timed for a non-recursive mutex that supports timeout
* @li @c mtx_try for a non-recursive mutex that supports test and return
* @li @c mtx_plain | @c mtx_recursive (same as @c mtx_plain, but recursive)
* @li @c mtx_timed | @c mtx_recursive (same as @c mtx_timed, but recursive)
* @li @c mtx_try | @c mtx_recursive (same as @c mtx_try, but recursive)
* @return @ref thrd_success on success, or @ref thrd_error if the request could
* not be honored.
*/
int mtx_init(mtx_t *mtx, int type);
/** Release any resources used by the given mutex.
* @param mtx A mutex object.
*/
void mtx_destroy(mtx_t *mtx);
/** Lock the given mutex.
* Blocks until the given mutex can be locked. If the mutex is non-recursive, and
* the calling thread already has a lock on the mutex, this call will block
* forever.
* @param mtx A mutex object.
* @return @ref thrd_success on success, or @ref thrd_error if the request could
* not be honored.
*/
int mtx_lock(mtx_t *mtx);
/** NOT YET IMPLEMENTED.
*/
int mtx_timedlock(mtx_t *mtx, const struct timespec *ts);
/** Try to lock the given mutex.
* The specified mutex shall support either test and return or timeout. If the
* mutex is already locked, the function returns without blocking.
* @param mtx A mutex object.
* @return @ref thrd_success on success, or @ref thrd_busy if the resource
* requested is already in use, or @ref thrd_error if the request could not be
* honored.
*/
int mtx_trylock(mtx_t *mtx);
/** Unlock the given mutex.
* @param mtx A mutex object.
* @return @ref thrd_success on success, or @ref thrd_error if the request could
* not be honored.
*/
int mtx_unlock(mtx_t *mtx);
/* Condition variable */
#if defined(_TTHREAD_WIN32_)
typedef struct {
HANDLE mEvents[2]; /* Signal and broadcast event HANDLEs. */
unsigned int mWaitersCount; /* Count of the number of waiters. */
CRITICAL_SECTION mWaitersCountLock; /* Serialize access to mWaitersCount. */
} cnd_t;
#else
typedef pthread_cond_t cnd_t;
#endif
/** Create a condition variable object.
* @param cond A condition variable object.
* @return @ref thrd_success on success, or @ref thrd_error if the request could
* not be honored.
*/
int cnd_init(cnd_t *cond);
/** Release any resources used by the given condition variable.
* @param cond A condition variable object.
*/
void cnd_destroy(cnd_t *cond);
/** Signal a condition variable.
* Unblocks one of the threads that are blocked on the given condition variable
* at the time of the call. If no threads are blocked on the condition variable
* at the time of the call, the function does nothing and return success.
* @param cond A condition variable object.
* @return @ref thrd_success on success, or @ref thrd_error if the request could
* not be honored.
*/
int cnd_signal(cnd_t *cond);
/** Broadcast a condition variable.
* Unblocks all of the threads that are blocked on the given condition variable
* at the time of the call. If no threads are blocked on the condition variable
* at the time of the call, the function does nothing and return success.
* @param cond A condition variable object.
* @return @ref thrd_success on success, or @ref thrd_error if the request could
* not be honored.
*/
int cnd_broadcast(cnd_t *cond);
/** Wait for a condition variable to become signaled.
* The function atomically unlocks the given mutex and endeavors to block until
* the given condition variable is signaled by a call to cnd_signal or to
* cnd_broadcast. When the calling thread becomes unblocked it locks the mutex
* before it returns.
* @param cond A condition variable object.
* @param mtx A mutex object.
* @return @ref thrd_success on success, or @ref thrd_error if the request could
* not be honored.
*/
int cnd_wait(cnd_t *cond, mtx_t *mtx);
/** Wait for a condition variable to become signaled.
* The function atomically unlocks the given mutex and endeavors to block until
* the given condition variable is signaled by a call to cnd_signal or to
* cnd_broadcast, or until after the specified time. When the calling thread
* becomes unblocked it locks the mutex before it returns.
* @param cond A condition variable object.
* @param mtx A mutex object.
* @param xt A point in time at which the request will time out (absolute time).
* @return @ref thrd_success upon success, or @ref thrd_timeout if the time
* specified in the call was reached without acquiring the requested resource, or
* @ref thrd_error if the request could not be honored.
*/
int cnd_timedwait(cnd_t *cond, mtx_t *mtx, const struct timespec *ts);
/* Thread */
#if defined(_TTHREAD_WIN32_)
typedef HANDLE thrd_t;
#else
typedef pthread_t thrd_t;
#endif
/** Thread start function.
* Any thread that is started with the @ref thrd_create() function must be
* started through a function of this type.
* @param arg The thread argument (the @c arg argument of the corresponding
* @ref thrd_create() call).
* @return The thread return value, which can be obtained by another thread
* by using the @ref thrd_join() function.
*/
typedef int (*thrd_start_t)(void *arg);
/** Create a new thread.
* @param thr Identifier of the newly created thread.
* @param func A function pointer to the function that will be executed in
* the new thread.
* @param arg An argument to the thread function.
* @return @ref thrd_success on success, or @ref thrd_nomem if no memory could
* be allocated for the thread requested, or @ref thrd_error if the request
* could not be honored.
* @note A thread’s identifier may be reused for a different thread once the
* original thread has exited and either been detached or joined to another
* thread.
*/
int thrd_create(thrd_t *thr, thrd_start_t func, void *arg);
/** Identify the calling thread.
* @return The identifier of the calling thread.
*/
thrd_t thrd_current(void);
/** NOT YET IMPLEMENTED.
*/
int thrd_detach(thrd_t thr);
/** Compare two thread identifiers.
* The function determines if two thread identifiers refer to the same thread.
* @return Zero if the two thread identifiers refer to different threads.
* Otherwise a nonzero value is returned.
*/
int thrd_equal(thrd_t thr0, thrd_t thr1);
/** Terminate execution of the calling thread.
* @param res Result code of the calling thread.
*/
void thrd_exit(int res);
/** Wait for a thread to terminate.
* The function joins the given thread with the current thread by blocking
* until the other thread has terminated.
* @param thr The thread to join with.
* @param res If this pointer is not NULL, the function will store the result
* code of the given thread in the integer pointed to by @c res.
* @return @ref thrd_success on success, or @ref thrd_error if the request could
* not be honored.
*/
int thrd_join(thrd_t thr, int *res);
/** Put the calling thread to sleep.
* Suspend execution of the calling thread.
* @param time_point A point in time at which the thread will resume (absolute time).
* @param remaining If non-NULL, this parameter will hold the remaining time until
* time_point upon return. This will typically be zero, but if
* the thread was woken up by a signal that is not ignored before
* time_point was reached @c remaining will hold a positive
* time.
* @return 0 (zero) on successful sleep, or -1 if an interrupt occurred.
*/
int thrd_sleep(const struct timespec *time_point, struct timespec *remaining);
/** Yield execution to another thread.
* Permit other threads to run, even if the current thread would ordinarily
* continue to run.
*/
void thrd_yield(void);
/* Thread local storage */
#if defined(_TTHREAD_WIN32_)
typedef DWORD tss_t;
#else
typedef pthread_key_t tss_t;
#endif
/** Destructor function for a thread-specific storage.
* @param val The value of the destructed thread-specific storage.
*/
typedef void (*tss_dtor_t)(void *val);
/** Create a thread-specific storage.
* @param key The unique key identifier that will be set if the function is
* successful.
* @param dtor Destructor function. This can be NULL.
* @return @ref thrd_success on success, or @ref thrd_error if the request could
* not be honored.
* @note The destructor function is not supported under Windows. If @c dtor is
* not NULL when calling this function under Windows, the function will fail
* and return @ref thrd_error.
*/
int tss_create(tss_t *key, tss_dtor_t dtor);
/** Delete a thread-specific storage.
* The function releases any resources used by the given thread-specific
* storage.
* @param key The key that shall be deleted.
*/
void tss_delete(tss_t key);
/** Get the value for a thread-specific storage.
* @param key The thread-specific storage identifier.
* @return The value for the current thread held in the given thread-specific
* storage.
*/
void *tss_get(tss_t key);
/** Set the value for a thread-specific storage.
* @param key The thread-specific storage identifier.
* @param val The value of the thread-specific storage to set for the current
* thread.
* @return @ref thrd_success on success, or @ref thrd_error if the request could
* not be honored.
*/
int tss_set(tss_t key, void *val);
#endif /* _TINYTHREAD_H_ */

247
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@@ -0,0 +1,247 @@
// ISO C9x compliant stdint.h for Microsoft Visual Studio
// Based on ISO/IEC 9899:TC2 Committee draft (May 6, 2005) WG14/N1124
//
// Copyright (c) 2006-2008 Alexander Chemeris
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. The name of the author may be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
// EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
///////////////////////////////////////////////////////////////////////////////
#ifndef _MSC_VER // [
#error "Use this header only with Microsoft Visual C++ compilers!"
#endif // _MSC_VER ]
#ifndef _MSC_STDINT_H_ // [
#define _MSC_STDINT_H_
#if _MSC_VER > 1000
#pragma once
#endif
#include <limits.h>
// For Visual Studio 6 in C++ mode and for many Visual Studio versions when
// compiling for ARM we should wrap <wchar.h> include with 'extern "C++" {}'
// or compiler give many errors like this:
// error C2733: second C linkage of overloaded function 'wmemchr' not allowed
#ifdef __cplusplus
extern "C" {
#endif
# include <wchar.h>
#ifdef __cplusplus
}
#endif
// Define _W64 macros to mark types changing their size, like intptr_t.
#ifndef _W64
# if !defined(__midl) && (defined(_X86_) || defined(_M_IX86)) && _MSC_VER >= 1300
# define _W64 __w64
# else
# define _W64
# endif
#endif
// 7.18.1 Integer types
// 7.18.1.1 Exact-width integer types
// Visual Studio 6 and Embedded Visual C++ 4 doesn't
// realize that, e.g. char has the same size as __int8
// so we give up on __intX for them.
#if (_MSC_VER < 1300)
typedef signed char int8_t;
typedef signed short int16_t;
typedef signed int int32_t;
typedef unsigned char uint8_t;
typedef unsigned short uint16_t;
typedef unsigned int uint32_t;
#else
typedef signed __int8 int8_t;
typedef signed __int16 int16_t;
typedef signed __int32 int32_t;
typedef unsigned __int8 uint8_t;
typedef unsigned __int16 uint16_t;
typedef unsigned __int32 uint32_t;
#endif
typedef signed __int64 int64_t;
typedef unsigned __int64 uint64_t;
// 7.18.1.2 Minimum-width integer types
typedef int8_t int_least8_t;
typedef int16_t int_least16_t;
typedef int32_t int_least32_t;
typedef int64_t int_least64_t;
typedef uint8_t uint_least8_t;
typedef uint16_t uint_least16_t;
typedef uint32_t uint_least32_t;
typedef uint64_t uint_least64_t;
// 7.18.1.3 Fastest minimum-width integer types
typedef int8_t int_fast8_t;
typedef int16_t int_fast16_t;
typedef int32_t int_fast32_t;
typedef int64_t int_fast64_t;
typedef uint8_t uint_fast8_t;
typedef uint16_t uint_fast16_t;
typedef uint32_t uint_fast32_t;
typedef uint64_t uint_fast64_t;
// 7.18.1.4 Integer types capable of holding object pointers
#ifdef _WIN64 // [
typedef signed __int64 intptr_t;
typedef unsigned __int64 uintptr_t;
#else // _WIN64 ][
typedef _W64 signed int intptr_t;
typedef _W64 unsigned int uintptr_t;
#endif // _WIN64 ]
// 7.18.1.5 Greatest-width integer types
typedef int64_t intmax_t;
typedef uint64_t uintmax_t;
// 7.18.2 Limits of specified-width integer types
#if !defined(__cplusplus) || defined(__STDC_LIMIT_MACROS) // [ See footnote 220 at page 257 and footnote 221 at page 259
// 7.18.2.1 Limits of exact-width integer types
#define INT8_MIN ((int8_t)_I8_MIN)
#define INT8_MAX _I8_MAX
#define INT16_MIN ((int16_t)_I16_MIN)
#define INT16_MAX _I16_MAX
#define INT32_MIN ((int32_t)_I32_MIN)
#define INT32_MAX _I32_MAX
#define INT64_MIN ((int64_t)_I64_MIN)
#define INT64_MAX _I64_MAX
#define UINT8_MAX _UI8_MAX
#define UINT16_MAX _UI16_MAX
#define UINT32_MAX _UI32_MAX
#define UINT64_MAX _UI64_MAX
// 7.18.2.2 Limits of minimum-width integer types
#define INT_LEAST8_MIN INT8_MIN
#define INT_LEAST8_MAX INT8_MAX
#define INT_LEAST16_MIN INT16_MIN
#define INT_LEAST16_MAX INT16_MAX
#define INT_LEAST32_MIN INT32_MIN
#define INT_LEAST32_MAX INT32_MAX
#define INT_LEAST64_MIN INT64_MIN
#define INT_LEAST64_MAX INT64_MAX
#define UINT_LEAST8_MAX UINT8_MAX
#define UINT_LEAST16_MAX UINT16_MAX
#define UINT_LEAST32_MAX UINT32_MAX
#define UINT_LEAST64_MAX UINT64_MAX
// 7.18.2.3 Limits of fastest minimum-width integer types
#define INT_FAST8_MIN INT8_MIN
#define INT_FAST8_MAX INT8_MAX
#define INT_FAST16_MIN INT16_MIN
#define INT_FAST16_MAX INT16_MAX
#define INT_FAST32_MIN INT32_MIN
#define INT_FAST32_MAX INT32_MAX
#define INT_FAST64_MIN INT64_MIN
#define INT_FAST64_MAX INT64_MAX
#define UINT_FAST8_MAX UINT8_MAX
#define UINT_FAST16_MAX UINT16_MAX
#define UINT_FAST32_MAX UINT32_MAX
#define UINT_FAST64_MAX UINT64_MAX
// 7.18.2.4 Limits of integer types capable of holding object pointers
#ifdef _WIN64 // [
# define INTPTR_MIN INT64_MIN
# define INTPTR_MAX INT64_MAX
# define UINTPTR_MAX UINT64_MAX
#else // _WIN64 ][
# define INTPTR_MIN INT32_MIN
# define INTPTR_MAX INT32_MAX
# define UINTPTR_MAX UINT32_MAX
#endif // _WIN64 ]
// 7.18.2.5 Limits of greatest-width integer types
#define INTMAX_MIN INT64_MIN
#define INTMAX_MAX INT64_MAX
#define UINTMAX_MAX UINT64_MAX
// 7.18.3 Limits of other integer types
#ifdef _WIN64 // [
# define PTRDIFF_MIN _I64_MIN
# define PTRDIFF_MAX _I64_MAX
#else // _WIN64 ][
# define PTRDIFF_MIN _I32_MIN
# define PTRDIFF_MAX _I32_MAX
#endif // _WIN64 ]
#define SIG_ATOMIC_MIN INT_MIN
#define SIG_ATOMIC_MAX INT_MAX
#ifndef SIZE_MAX // [
# ifdef _WIN64 // [
# define SIZE_MAX _UI64_MAX
# else // _WIN64 ][
# define SIZE_MAX _UI32_MAX
# endif // _WIN64 ]
#endif // SIZE_MAX ]
// WCHAR_MIN and WCHAR_MAX are also defined in <wchar.h>
#ifndef WCHAR_MIN // [
# define WCHAR_MIN 0
#endif // WCHAR_MIN ]
#ifndef WCHAR_MAX // [
# define WCHAR_MAX _UI16_MAX
#endif // WCHAR_MAX ]
#define WINT_MIN 0
#define WINT_MAX _UI16_MAX
#endif // __STDC_LIMIT_MACROS ]
// 7.18.4 Limits of other integer types
#if !defined(__cplusplus) || defined(__STDC_CONSTANT_MACROS) // [ See footnote 224 at page 260
// 7.18.4.1 Macros for minimum-width integer constants
#define INT8_C(val) val##i8
#define INT16_C(val) val##i16
#define INT32_C(val) val##i32
#define INT64_C(val) val##i64
#define UINT8_C(val) val##ui8
#define UINT16_C(val) val##ui16
#define UINT32_C(val) val##ui32
#define UINT64_C(val) val##ui64
// 7.18.4.2 Macros for greatest-width integer constants
#define INTMAX_C INT64_C
#define UINTMAX_C UINT64_C
#endif // __STDC_CONSTANT_MACROS ]
#endif // _MSC_STDINT_H_ ]

29
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set(glfw_DOCS_SOURCES
"${GLFW_SOURCE_DIR}/include/GLFW/glfw3.h"
"${GLFW_SOURCE_DIR}/include/GLFW/glfw3native.h"
"${GLFW_SOURCE_DIR}/docs/main.dox"
"${GLFW_SOURCE_DIR}/docs/news.dox"
"${GLFW_SOURCE_DIR}/docs/quick.dox"
"${GLFW_SOURCE_DIR}/docs/moving.dox"
"${GLFW_SOURCE_DIR}/docs/compile.dox"
"${GLFW_SOURCE_DIR}/docs/build.dox"
"${GLFW_SOURCE_DIR}/docs/intro.dox"
"${GLFW_SOURCE_DIR}/docs/context.dox"
"${GLFW_SOURCE_DIR}/docs/monitor.dox"
"${GLFW_SOURCE_DIR}/docs/window.dox"
"${GLFW_SOURCE_DIR}/docs/input.dox"
"${GLFW_SOURCE_DIR}/docs/vulkan.dox"
"${GLFW_SOURCE_DIR}/docs/compat.dox"
"${GLFW_SOURCE_DIR}/docs/internal.dox")
foreach(arg ${glfw_DOCS_SOURCES})
set(GLFW_DOCS_SOURCES "${GLFW_DOCS_SOURCES} \\\n\"${arg}\"")
endforeach()
configure_file(Doxyfile.in Doxyfile @ONLY)
add_custom_target(docs ALL "${DOXYGEN_EXECUTABLE}"
WORKING_DIRECTORY "${GLFW_BINARY_DIR}/docs"
COMMENT "Generating HTML documentation" VERBATIM)

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# Contribution Guide
## Contents
- [Asking a question](#asking-a-question)
- [Reporting a bug](#reporting-a-bug)
- [Reporting a compile or link bug](#reporting-a-compile-or-link-bug)
- [Reporting a segfault or other crash bug](#reporting-a-segfault-or-other-crash-bug)
- [Reporting a context creation bug](#reporting-a-context-creation-bug)
- [Reporting a monitor or video mode bug](#reporting-a-monitor-or-video-mode-bug)
- [Reporting a window, input or event bug](#reporting-a-window-input-or-event-bug)
- [Reporting some other library bug](#reporting-some-other-library-bug)
- [Reporting a documentation bug](#reporting-a-documentation-bug)
- [Reporting a website bug](#reporting-a-website-bug)
- [Requesting a feature](#requesting-a-feature)
- [Contributing a bug fix](#contributing-a-bug-fix)
- [Contributing a feature](#contributing-a-feature)
## Asking a question
Questions about how to use GLFW should be asked either in the [support
section](http://discourse.glfw.org/c/support) of the forum, under the [Stack
Overflow tag](https://stackoverflow.com/questions/tagged/glfw) or [Game
Development tag](https://gamedev.stackexchange.com/questions/tagged/glfw) on
Stack Exchange or in the IRC channel `#glfw` on
[Freenode](http://freenode.net/).
Questions about the design or implementation of GLFW or about future plans
should be asked in the [dev section](http://discourse.glfw.org/c/dev) of the
forum or in the IRC channel. Please don't open a GitHub issue to discuss design
questions without first checking with a maintainer.
## Reporting a bug
If GLFW is behaving unexpectedly at run-time, start by setting an [error
callback](https://www.glfw.org/docs/latest/intro_guide.html#error_handling).
GLFW will often tell you the cause of an error via this callback. If it
doesn't, that might be a separate bug.
If GLFW is crashing or triggering asserts, make sure that all your object
handles and other pointers are valid.
For bugs where it makes sense, a short, self contained example is absolutely
invaluable. Just put it inline in the body text. Note that if the bug is
reproducible with one of the test programs that come with GLFW, just mention
that instead.
__Don't worry about adding too much information__. Unimportant information can
be abbreviated or removed later, but missing information can stall bug fixing,
especially when your schedule doesn't align with that of the maintainer.
__Please provide text as text, not as images__. This includes code, error
messages and any other text. Text in images cannot be found by other users
searching for the same problem and may have to be re-typed by maintainers when
debugging.
You don't need to manually indent your code or other text to quote it with
GitHub Markdown; just surround it with triple backticks:
```
Some quoted text.
```
You can also add syntax highlighting by appending the common file extension:
```c
int five(void)
{
return 5;
}
```
There are issue labels for both platforms and GPU manufacturers, so there is no
need to mention these in the subject line. If you do, it will be removed when
the issue is labeled.
If your bug is already reported, please add any new information you have, or if
it already has everything, give it a :+1:.
### Reporting a compile or link bug
__Note:__ GLFW needs many system APIs to do its job, which on some platforms
means linking to many system libraries. If you are using GLFW as a static
library, that means your application needs to link to these in addition to GLFW.
__Note:__ Check the [Compiling
GLFW](https://www.glfw.org/docs/latest/compile.html) guide and or [Building
applications](https://www.glfw.org/docs/latest/build.html) guide for before
opening an issue of this kind. Most issues are caused by a missing package or
linker flag.
Always include the __operating system name and version__ (e.g. `Windows
7 64-bit` or `Ubuntu 15.10`) and the __compiler name and version__ (e.g. `Visual
C++ 2015 Update 2`). If you are using an official release of GLFW,
include the __GLFW release version__ (e.g. `3.1.2`), otherwise include the
__GLFW commit ID__ (e.g. `3795d78b14ef06008889cc422a1fb8d642597751`) from Git.
Please also include the __complete build log__ from your compiler and linker,
even if it's long. It can always be shortened later, if necessary.
#### Quick template
```
OS and version:
Compiler version:
Release or commit:
Build log:
```
### Reporting a segfault or other crash bug
Always include the __operating system name and version__ (e.g. `Windows
7 64-bit` or `Ubuntu 15.10`). If you are using an official release of GLFW,
include the __GLFW release version__ (e.g. `3.1.2`), otherwise include the
__GLFW commit ID__ (e.g. `3795d78b14ef06008889cc422a1fb8d642597751`) from Git.
Please also include any __error messages__ provided to your application via the
[error
callback](https://www.glfw.org/docs/latest/intro_guide.html#error_handling) and
the __full call stack__ of the crash, or if the crash does not occur in debug
mode, mention that instead.
#### Quick template
```
OS and version:
Release or commit:
Error messages:
Call stack:
```
### Reporting a context creation bug
__Note:__ Windows ships with graphics drivers that do not support OpenGL. If
GLFW says that your machine lacks support for OpenGL, it very likely does.
Install drivers from the computer manufacturer or graphics card manufacturer
([Nvidia](https://www.geforce.com/drivers),
[AMD](https://www.amd.com/en/support),
[Intel](https://www-ssl.intel.com/content/www/us/en/support/detect.html)) to
fix this.
__Note:__ AMD only supports OpenGL ES on Windows via EGL. See the
[GLFW\_CONTEXT\_CREATION\_API](https://www.glfw.org/docs/latest/window_guide.html#window_hints_ctx)
hint for how to select EGL.
Please verify that context creation also fails with the `glfwinfo` tool before
reporting it as a bug. This tool is included in the GLFW source tree as
`tests/glfwinfo.c` and is built along with the library. It has switches for all
GLFW context and framebuffer hints. Run `glfwinfo -h` for a complete list.
Always include the __operating system name and version__ (e.g. `Windows
7 64-bit` or `Ubuntu 15.10`). If you are using an official release of GLFW,
include the __GLFW release version__ (e.g. `3.1.2`), otherwise include the
__GLFW commit ID__ (e.g. `3795d78b14ef06008889cc422a1fb8d642597751`) from Git.
If you are running your program in a virtual machine, please mention this and
include the __VM name and version__ (e.g. `VirtualBox 5.1`).
Please also include the __GLFW version string__ (`3.2.0 X11 EGL clock_gettime
/dev/js`), as described
[here](https://www.glfw.org/docs/latest/intro.html#intro_version_string), the
__GPU model and driver version__ (e.g. `GeForce GTX660 with 352.79`), and the
__output of `glfwinfo`__ (with switches matching any hints you set in your
code) when reporting this kind of bug. If this tool doesn't run on the machine,
mention that instead.
#### Quick template
```
OS and version:
GPU and driver:
Release or commit:
Version string:
glfwinfo output:
```
### Reporting a monitor or video mode bug
__Note:__ On headless systems on some platforms, no monitors are reported. This
causes glfwGetPrimaryMonitor to return `NULL`, which not all applications are
prepared for.
__Note:__ Some third-party tools report more video modes than are approved of
by the OS. For safety and compatibility, GLFW only reports video modes the OS
wants programs to use. This is not a bug.
The `monitors` tool is included in the GLFW source tree as `tests/monitors.c`
and is built along with the library. It lists all information GLFW provides
about monitors it detects.
Always include the __operating system name and version__ (e.g. `Windows
7 64-bit` or `Ubuntu 15.10`). If you are using an official release of GLFW,
include the __GLFW release version__ (e.g. `3.1.2`), otherwise include the
__GLFW commit ID__ (e.g. `3795d78b14ef06008889cc422a1fb8d642597751`) from Git.
If you are running your program in a virtual machine, please mention this and
include the __VM name and version__ (e.g. `VirtualBox 5.1`).
Please also include any __error messages__ provided to your application via the
[error
callback](https://www.glfw.org/docs/latest/intro_guide.html#error_handling) and
the __output of `monitors`__ when reporting this kind of bug. If this tool
doesn't run on the machine, mention this instead.
#### Quick template
```
OS and version:
Release or commit:
Error messages:
monitors output:
```
### Reporting a window, input or event bug
__Note:__ The exact ordering of related window events will sometimes differ.
__Note:__ Window moving and resizing (by the user) will block the main thread on
some platforms. This is not a bug. Set a [refresh
callback](https://www.glfw.org/docs/latest/window.html#window_refresh) if you
want to keep the window contents updated during a move or size operation.
The `events` tool is included in the GLFW source tree as `tests/events.c` and is
built along with the library. It prints all information provided to every
callback supported by GLFW as events occur. Each event is listed with the time
and a unique number to make discussions about event logs easier. The tool has
command-line options for creating multiple windows and full screen windows.
Always include the __operating system name and version__ (e.g. `Windows
7 64-bit` or `Ubuntu 15.10`). If you are using an official release of GLFW,
include the __GLFW release version__ (e.g. `3.1.2`), otherwise include the
__GLFW commit ID__ (e.g. `3795d78b14ef06008889cc422a1fb8d642597751`) from Git.
If you are running your program in a virtual machine, please mention this and
include the __VM name and version__ (e.g. `VirtualBox 5.1`).
Please also include any __error messages__ provided to your application via the
[error
callback](https://www.glfw.org/docs/latest/intro_guide.html#error_handling) and
if relevant, the __output of `events`__ when reporting this kind of bug. If
this tool doesn't run on the machine, mention this instead.
__X11:__ If possible, please include what desktop environment (e.g. GNOME,
Unity, KDE) and/or window manager (e.g. Openbox, dwm, Window Maker) you are
running. If the bug is related to keyboard input, please include any input
method (e.g. ibus, SCIM) you are using.
#### Quick template
```
OS and version:
Release or commit:
Error messages:
events output:
```
### Reporting some other library bug
Always include the __operating system name and version__ (e.g. `Windows
7 64-bit` or `Ubuntu 15.10`). If you are using an official release of GLFW,
include the __GLFW release version__ (e.g. `3.1.2`), otherwise include the
__GLFW commit ID__ (e.g. `3795d78b14ef06008889cc422a1fb8d642597751`) from Git.
Please also include any __error messages__ provided to your application via the
[error
callback](https://www.glfw.org/docs/latest/intro_guide.html#error_handling), if
relevant.
#### Quick template
```
OS and version:
Release or commit:
Error messages:
```
### Reporting a documentation bug
If you found a bug in the documentation, including this file, then it's fine to
just link to that web page or mention that source file. You don't need to match
the source to the output or vice versa.
### Reporting a website bug
If the bug is in the documentation (anything under `/docs/`) then please see the
section above. Bugs in the rest of the site are reported to the [website
source repository](https://github.com/glfw/website/issues).
## Requesting a feature
Please explain why you need the feature and how you intend to use it. If you
have a specific API design in mind, please add that as well. If you have or are
planning to write code for the feature, see the section below.
If there already is a request for the feature you need, add your specific use
case unless it is already mentioned. If it is, give it a :+1:.
## Contributing a bug fix
__Note:__ You must have all necessary [intellectual
property rights](https://en.wikipedia.org/wiki/Intellectual_property) to any
code you contribute. If you did not write the code yourself, you must explain
where it came from and under what license you received it. Even code using the
same license as GLFW may not be copied without attribution.
__There is no preferred patch size__. A one character fix is just as welcome as
a thousand line one, if that is the appropriate size for the fix.
In addition to the code, a complete bug fix includes:
- Change log entry in `README.md`, describing the incorrect behavior
- Credits entries for all authors of the bug fix
Bug fixes will not be rejected because they don't include all the above parts,
but please keep in mind that maintainer time is finite and that there are many
other bugs and features to work on.
If the patch fixes a bug introduced after the last release, it should not get
a change log entry.
If you haven't already, read the excellent article [How to Write a Git Commit
Message](https://chris.beams.io/posts/git-commit/).
## Contributing a feature
__Note:__ You must have all necessary rights to any code you contribute. If you
did not write the code yourself, you must explain where it came from and under
what license. Even code using the same license as GLFW may not be copied
without attribution.
__Note:__ If you haven't already implemented the feature, check first if there
already is an open issue for it and if it's already being developed in an
[experimental branch](https://github.com/glfw/glfw/branches/all).
__There is no preferred patch size__. A one character change is just as welcome
as one adding a thousand line one, if that is the appropriate size for the
feature.
In addition to the code, a complete feature includes:
- Change log entry in `README.md`, listing all new symbols
- News page entry, briefly describing the feature
- Guide documentation, with minimal examples, in the relevant guide
- Reference documentation, with all applicable tags
- Cross-references and mentions in appropriate places
- Credits entries for all authors of the feature
If the feature requires platform-specific code, at minimum stubs must be added
for the new platform function to all supported and experimental platforms.
If it adds a new callback, support for it must be added to `tests/event.c`.
If it adds a new monitor property, support for it must be added to
`tests/monitor.c`.
If it adds a new OpenGL, OpenGL ES or Vulkan option or extension, support
for it must be added to `tests/glfwinfo.c` and the behavior of the library when
the extension is missing documented in `docs/compat.dox`.
If you haven't already, read the excellent article [How to Write a Git Commit
Message](https://chris.beams.io/posts/git-commit/).
Features will not be rejected because they don't include all the above parts,
but please keep in mind that maintainer time is finite and that there are many
other features and bugs to work on.
Please also keep in mind that any part of the public API that has been included
in a release cannot be changed until the next _major_ version. Features can be
added and existing parts can sometimes be overloaded (in the general sense of
doing more things, not in the C++ sense), but code written to the API of one
minor release should both compile and run on subsequent minor releases.

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/*!
@page build_guide Building applications
@tableofcontents
This is about compiling and linking applications that use GLFW. For information on
how to write such applications, start with the
[introductory tutorial](@ref quick_guide). For information on how to compile
the GLFW library itself, see @ref compile_guide.
This is not a tutorial on compilation or linking. It assumes basic
understanding of how to compile and link a C program as well as how to use the
specific compiler of your chosen development environment. The compilation
and linking process should be explained in your C programming material and in
the documentation for your development environment.
@section build_include Including the GLFW header file
You should include the GLFW header in the source files where you use OpenGL or
GLFW.
@code
#include <GLFW/glfw3.h>
@endcode
This header declares the GLFW API and by default also includes the OpenGL header
from your development environment. See below for how to control this.
The GLFW header also defines any platform-specific macros needed by your OpenGL
header, so it can be included without needing any window system headers.
For example, under Windows you are normally required to include `windows.h`
before the OpenGL header, which would bring in the whole Win32 API. The GLFW
header duplicates the small number of macros needed.
It does this only when needed, so if `windows.h` _is_ included, the GLFW header
does not try to redefine those symbols. The reverse is not true, i.e.
`windows.h` cannot cope if any of its symbols have already been defined.
In other words:
- Do _not_ include the OpenGL headers yourself, as GLFW does this for you
- Do _not_ include `windows.h` or other platform-specific headers unless you
plan on using those APIs directly
- If you _do_ need to include such headers, do it _before_ including
the GLFW header and it will handle this
If you are using an OpenGL extension loading library such as
[glad](https://github.com/Dav1dde/glad), the extension loader header should
be included _before_ the GLFW one.
@code
#include <glad/gl.h>
#include <GLFW/glfw3.h>
@endcode
Alternatively the @ref GLFW_INCLUDE_NONE macro (described below) can be used to
prevent the GLFW header from including the OpenGL header.
@code
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#include <glad/gl.h>
@endcode
@subsection build_macros GLFW header option macros
These macros may be defined before the inclusion of the GLFW header and affect
its behavior.
@anchor GLFW_DLL
__GLFW_DLL__ is required on Windows when using the GLFW DLL, to tell the
compiler that the GLFW functions are defined in a DLL.
The following macros control which OpenGL or OpenGL ES API header is included.
Only one of these may be defined at a time.
@anchor GLFW_INCLUDE_GLCOREARB
__GLFW_INCLUDE_GLCOREARB__ makes the GLFW header include the modern
`GL/glcorearb.h` header (`OpenGL/gl3.h` on macOS) instead of the regular OpenGL
header.
@anchor GLFW_INCLUDE_ES1
__GLFW_INCLUDE_ES1__ makes the GLFW header include the OpenGL ES 1.x `GLES/gl.h`
header instead of the regular OpenGL header.
@anchor GLFW_INCLUDE_ES2
__GLFW_INCLUDE_ES2__ makes the GLFW header include the OpenGL ES 2.0
`GLES2/gl2.h` header instead of the regular OpenGL header.
@anchor GLFW_INCLUDE_ES3
__GLFW_INCLUDE_ES3__ makes the GLFW header include the OpenGL ES 3.0
`GLES3/gl3.h` header instead of the regular OpenGL header.
@anchor GLFW_INCLUDE_ES31
__GLFW_INCLUDE_ES31__ makes the GLFW header include the OpenGL ES 3.1
`GLES3/gl31.h` header instead of the regular OpenGL header.
@anchor GLFW_INCLUDE_ES32
__GLFW_INCLUDE_ES31__ makes the GLFW header include the OpenGL ES 3.2
`GLES3/gl32.h` header instead of the regular OpenGL header.
@anchor GLFW_INCLUDE_NONE
__GLFW_INCLUDE_NONE__ makes the GLFW header not include any OpenGL or OpenGL ES
API header. This is useful in combination with an extension loading library.
If none of the above inclusion macros are defined, the standard OpenGL `GL/gl.h`
header (`OpenGL/gl.h` on macOS) is included.
The following macros control the inclusion of additional API headers. Any
number of these may be defined simultaneously, and/or together with one of the
above macros.
@anchor GLFW_INCLUDE_VULKAN
__GLFW_INCLUDE_VULKAN__ makes the GLFW header include the Vulkan
`vulkan/vulkan.h` header in addition to any selected OpenGL or OpenGL ES header.
@anchor GLFW_INCLUDE_GLEXT
__GLFW_INCLUDE_GLEXT__ makes the GLFW header include the appropriate extension
header for the OpenGL or OpenGL ES header selected above after and in addition
to that header.
@anchor GLFW_INCLUDE_GLU
__GLFW_INCLUDE_GLU__ makes the header include the GLU header in addition to the
header selected above. This should only be used with the standard OpenGL header
and only for compatibility with legacy code. GLU has been deprecated and should
not be used in new code.
@note GLFW does not provide any of the API headers mentioned above. They must
be provided by your development environment or your OpenGL, OpenGL ES or Vulkan
SDK.
@note None of these macros may be defined during the compilation of GLFW itself.
If your build includes GLFW and you define any these in your build files, make
sure they are not applied to the GLFW sources.
@section build_link Link with the right libraries
GLFW is essentially a wrapper of various platform-specific APIs and therefore
needs to link against many different system libraries. If you are using GLFW as
a shared library / dynamic library / DLL then it takes care of these links.
However, if you are using GLFW as a static library then your executable will
need to link against these libraries.
On Windows and macOS, the list of system libraries is static and can be
hard-coded into your build environment. See the section for your development
environment below. On Linux and other Unix-like operating systems, the list
varies but can be retrieved in various ways as described below.
A good general introduction to linking is
[Beginner's Guide to Linkers](https://www.lurklurk.org/linkers/linkers.html) by
David Drysdale.
@subsection build_link_win32 With MinGW or Visual C++ on Windows
The static version of the GLFW library is named `glfw3`. When using this
version, it is also necessary to link with some libraries that GLFW uses.
When using MinGW to link an application with the static version of GLFW, you
must also explicitly link with `gdi32`. Other toolchains including MinGW-w64
include it in the set of default libraries along with other dependencies like
`user32` and `kernel32`.
If you are using GLU, you must also link with `glu32`.
The link library for the GLFW DLL is named `glfw3dll`. When compiling an
application that uses the DLL version of GLFW, you need to define the @ref
GLFW_DLL macro _before_ any inclusion of the GLFW header. This can be done
either with a compiler switch or by defining it in your source code.
An application using the GLFW DLL does not need to link against any of its
dependencies, but you still have to link against `glu32` if it uses GLU.
@subsection build_link_cmake_source With CMake and GLFW source
This section is about using CMake to compile and link GLFW along with your
application. If you want to use an installed binary instead, see @ref
build_link_cmake_package.
With a few changes to your `CMakeLists.txt` you can have the GLFW source tree
built along with your application.
When including GLFW as part of your build, you probably don't want to build the
GLFW tests, examples and documentation. To disable these, set the corresponding
cache variables before adding the GLFW source tree.
@code
set(GLFW_BUILD_DOCS OFF CACHE BOOL "" FORCE)
set(GLFW_BUILD_TESTS OFF CACHE BOOL "" FORCE)
set(GLFW_BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)
@endcode
Then add the root directory of the GLFW source tree to your project. This
will add the `glfw` target and the necessary cache variables to your project.
@code{.cmake}
add_subdirectory(path/to/glfw)
@endcode
Once GLFW has been added to the project, link against it with the `glfw` target.
This adds all link-time dependencies of GLFW as it is currently configured,
the include directory for the GLFW header and, when applicable, the @ref
GLFW_DLL macro.
@code{.cmake}
target_link_libraries(myapp glfw)
@endcode
Note that the dependencies do not include OpenGL or GLU, as GLFW loads any
OpenGL, OpenGL ES or Vulkan libraries it needs at runtime and does not use GLU.
If your application calls OpenGL directly, instead of using a modern
[extension loader library](@ref context_glext_auto) you can find it by requiring
the OpenGL package.
@code{.cmake}
find_package(OpenGL REQUIRED)
@endcode
If OpenGL is found, the `OPENGL_FOUND` variable is true and the
`OPENGL_INCLUDE_DIR` and `OPENGL_gl_LIBRARY` cache variables can be used.
@code{.cmake}
target_include_directories(myapp PUBLIC ${OPENGL_INCLUDE_DIR})
target_link_libraries(myapp ${OPENGL_gl_LIBRARY})
@endcode
The OpenGL CMake package also looks for GLU. If GLU is found, the
`OPENGL_GLU_FOUND` variable is true and the `OPENGL_INCLUDE_DIR` and
`OPENGL_glu_LIBRARY` cache variables can be used.
@code{.cmake}
target_link_libraries(myapp ${OPENGL_glu_LIBRARY})
@endcode
@note GLU has been deprecated and should not be used in new code, but some
legacy code requires it. See the [section on GLU](@ref moving_glu) in the
transition guide for suggested replacements.
@subsection build_link_cmake_package With CMake and installed GLFW binaries
This section is about using CMake to link GLFW after it has been built and
installed. If you want to build it along with your application instead, see
@ref build_link_cmake_source.
With a few changes to your `CMakeLists.txt` you can locate the package and
target files generated when GLFW is installed.
@code{.cmake}
find_package(glfw3 3.3 REQUIRED)
@endcode
Once GLFW has been added to the project, link against it with the `glfw` target.
This adds all link-time dependencies of GLFW as it is currently configured,
the include directory for the GLFW header and, when applicable, the @ref
GLFW_DLL macro.
@code{.cmake}
target_link_libraries(myapp glfw)
@endcode
Note that the dependencies do not include OpenGL or GLU, as GLFW loads any
OpenGL, OpenGL ES or Vulkan libraries it needs at runtime and does not use GLU.
If your application calls OpenGL directly, instead of using a modern
[extension loader library](@ref context_glext_auto) you can find it by requiring
the OpenGL package.
@code{.cmake}
find_package(OpenGL REQUIRED)
@endcode
If OpenGL is found, the `OPENGL_FOUND` variable is true and the
`OPENGL_INCLUDE_DIR` and `OPENGL_gl_LIBRARY` cache variables can be used.
@code{.cmake}
target_include_directories(myapp PUBLIC ${OPENGL_INCLUDE_DIR})
target_link_libraries(myapp ${OPENGL_gl_LIBRARY})
@endcode
The OpenGL CMake package also looks for GLU. If GLU is found, the
`OPENGL_GLU_FOUND` variable is true and the `OPENGL_INCLUDE_DIR` and
`OPENGL_glu_LIBRARY` cache variables can be used.
@code{.cmake}
target_link_libraries(myapp ${OPENGL_glu_LIBRARY})
@endcode
@note GLU has been deprecated and should not be used in new code, but some
legacy code requires it. See the [section on GLU](@ref moving_glu) in the
transition guide for suggested replacements.
@subsection build_link_pkgconfig With makefiles and pkg-config on Unix
GLFW supports [pkg-config](https://www.freedesktop.org/wiki/Software/pkg-config/),
and the `glfw3.pc` pkg-config file is generated when the GLFW library is built
and is installed along with it. A pkg-config file describes all necessary
compile-time and link-time flags and dependencies needed to use a library. When
they are updated or if they differ between systems, you will get the correct
ones automatically.
A typical compile and link command-line when using the static version of the
GLFW library may look like this:
@code{.sh}
cc `pkg-config --cflags glfw3` -o myprog myprog.c `pkg-config --static --libs glfw3`
@endcode
If you are using the shared version of the GLFW library, omit the `--static`
flag.
@code{.sh}
cc `pkg-config --cflags glfw3` -o myprog myprog.c `pkg-config --libs glfw3`
@endcode
You can also use the `glfw3.pc` file without installing it first, by using the
`PKG_CONFIG_PATH` environment variable.
@code{.sh}
env PKG_CONFIG_PATH=path/to/glfw/src cc `pkg-config --cflags glfw3` -o myprog myprog.c `pkg-config --libs glfw3`
@endcode
The dependencies do not include OpenGL or GLU, as GLFW loads any OpenGL, OpenGL
ES or Vulkan libraries it needs at runtime and does not use GLU. On macOS, GLU
is built into the OpenGL framework, so if you need GLU you don't need to do
anything extra. If you need GLU and are using Linux or BSD, you should add the
`glu` pkg-config package.
@code{.sh}
cc `pkg-config --cflags glfw3 glu` -o myprog myprog.c `pkg-config --libs glfw3 glu`
@endcode
@note GLU has been deprecated and should not be used in new code, but some
legacy code requires it. See the [section on GLU](@ref moving_glu) in the
transition guide for suggested replacements.
If you are using the static version of the GLFW library, make sure you don't
link statically against GLU.
@code{.sh}
cc `pkg-config --cflags glfw3 glu` -o myprog myprog.c `pkg-config --static --libs glfw3` `pkg-config --libs glu`
@endcode
@subsection build_link_xcode With Xcode on macOS
If you are using the dynamic library version of GLFW, add it to the project
dependencies.
If you are using the static library version of GLFW, add it and the Cocoa,
OpenGL, IOKit and CoreVideo frameworks to the project as dependencies. They can
all be found in `/System/Library/Frameworks`.
@subsection build_link_osx With command-line on macOS
It is recommended that you use [pkg-config](@ref build_link_pkgconfig) when
building from the command line on macOS. That way you will get any new
dependencies added automatically. If you still wish to build manually, you need
to add the required frameworks and libraries to your command-line yourself using
the `-l` and `-framework` switches.
If you are using the dynamic GLFW library, which is named `libglfw.3.dylib`, do:
@code{.sh}
cc -o myprog myprog.c -lglfw -framework Cocoa -framework OpenGL -framework IOKit -framework CoreVideo
@endcode
If you are using the static library, named `libglfw3.a`, substitute `-lglfw3`
for `-lglfw`.
Note that you do not add the `.framework` extension to a framework when linking
against it from the command-line.
The OpenGL framework contains both the OpenGL and GLU APIs, so there is nothing
special to do when using GLU. Also note that even though your machine may have
`libGL`-style OpenGL libraries, they are for use with the X Window System and
will _not_ work with the macOS native version of GLFW.
*/

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/*!
@page compat_guide Standards conformance
@tableofcontents
This guide describes the various API extensions used by this version of GLFW.
It lists what are essentially implementation details, but which are nonetheless
vital knowledge for developers intending to deploy their applications on a wide
range of machines.
The information in this guide is not a part of GLFW API, but merely
preconditions for some parts of the library to function on a given machine. Any
part of this information may change in future versions of GLFW and that will not
be considered a breaking API change.
@section compat_x11 X11 extensions, protocols and IPC standards
As GLFW uses Xlib directly, without any intervening toolkit
library, it has sole responsibility for interacting well with the many and
varied window managers in use on Unix-like systems. In order for applications
and window managers to work well together, a number of standards and
conventions have been developed that regulate behavior outside the scope of the
X11 API; most importantly the
[Inter-Client Communication Conventions Manual](https://www.tronche.com/gui/x/icccm/)
(ICCCM) and
[Extended Window Manager Hints](https://standards.freedesktop.org/wm-spec/wm-spec-latest.html)
(EWMH) standards.
GLFW uses the `_MOTIF_WM_HINTS` window property to support borderless windows.
If the running window manager does not support this property, the
`GLFW_DECORATED` hint will have no effect.
GLFW uses the ICCCM `WM_DELETE_WINDOW` protocol to intercept the user
attempting to close the GLFW window. If the running window manager does not
support this protocol, the close callback will never be called.
GLFW uses the EWMH `_NET_WM_PING` protocol, allowing the window manager notify
the user when the application has stopped responding, i.e. when it has ceased to
process events. If the running window manager does not support this protocol,
the user will not be notified if the application locks up.
GLFW uses the EWMH `_NET_WM_STATE_FULLSCREEN` window state to tell the window
manager to make the GLFW window full screen. If the running window manager does
not support this state, full screen windows may not work properly. GLFW has
a fallback code path in case this state is unavailable, but every window manager
behaves slightly differently in this regard.
GLFW uses the EWMH `_NET_WM_BYPASS_COMPOSITOR` window property to tell a
compositing window manager to un-redirect full screen GLFW windows. If the
running window manager uses compositing but does not support this property then
additional copying may be performed for each buffer swap of full screen windows.
GLFW uses the
[clipboard manager protocol](https://www.freedesktop.org/wiki/ClipboardManager/)
to push a clipboard string (i.e. selection) owned by a GLFW window about to be
destroyed to the clipboard manager. If there is no running clipboard manager,
the clipboard string will be unavailable once the window has been destroyed.
GLFW uses the
[X drag-and-drop protocol](https://www.freedesktop.org/wiki/Specifications/XDND/)
to provide file drop events. If the application originating the drag does not
support this protocol, drag and drop will not work.
GLFW uses the XRandR 1.3 extension to provide multi-monitor support. If the
running X server does not support this version of this extension, multi-monitor
support will not function and only a single, desktop-spanning monitor will be
reported.
GLFW uses the XRandR 1.3 and Xf86vidmode extensions to provide gamma ramp
support. If the running X server does not support either or both of these
extensions, gamma ramp support will not function.
GLFW uses the Xkb extension and detectable auto-repeat to provide keyboard
input. If the running X server does not support this extension, a non-Xkb
fallback path is used.
GLFW uses the XInput2 extension to provide raw, non-accelerated mouse motion
when the cursor is disabled. If the running X server does not support this
extension, regular accelerated mouse motion will be used.
GLFW uses both the XRender extension and the compositing manager to support
transparent window framebuffers. If the running X server does not support this
extension or there is no running compositing manager, the
`GLFW_TRANSPARENT_FRAMEBUFFER` framebuffer hint will have no effect.
@section compat_wayland Wayland protocols and IPC standards
As GLFW uses libwayland directly, without any intervening toolkit library, it
has sole responsibility for interacting well with every compositor in use on
Unix-like systems. Most of the features are provided by the core protocol,
while cursor support is provided by the libwayland-cursor helper library, EGL
integration by libwayland-egl, and keyboard handling by
[libxkbcommon](https://xkbcommon.org/). In addition, GLFW uses some protocols
from wayland-protocols to provide additional features if the compositor
supports them.
GLFW uses xkbcommon 0.5.0 to provide compose key support. When it has been
built against an older xkbcommon, the compose key will be disabled even if it
has been configured in the compositor.
GLFW uses the [xdg-shell
protocol](https://cgit.freedesktop.org/wayland/wayland-protocols/tree/stable/xdg-shell/xdg-shell.xml)
to provide better window management. This protocol is part of
wayland-protocols 1.12, and mandatory at build time. If the running compositor
does not support this protocol, the older [wl_shell
interface](https://cgit.freedesktop.org/wayland/wayland/tree/protocol/wayland.xml#n972)
will be used instead. This will result in a worse integration with the
desktop, especially on tiling compositors.
GLFW uses the [relative pointer
protocol](https://cgit.freedesktop.org/wayland/wayland-protocols/tree/unstable/relative-pointer/relative-pointer-unstable-v1.xml)
alongside the [pointer constraints
protocol](https://cgit.freedesktop.org/wayland/wayland-protocols/tree/unstable/pointer-constraints/pointer-constraints-unstable-v1.xml)
to implement disabled cursor. These two protocols are part of
wayland-protocols 1.1, and mandatory at build time. If the running compositor
does not support both of these protocols, disabling the cursor will have no
effect.
GLFW uses the [idle inhibit
protocol](https://cgit.freedesktop.org/wayland/wayland-protocols/tree/unstable/idle-inhibit/idle-inhibit-unstable-v1.xml)
to prohibit the screensaver from starting. This protocol is part of
wayland-protocols 1.6, and mandatory at build time. If the running compositor
does not support this protocol, the screensaver may start even for full screen
windows.
GLFW uses the [xdg-decoration
protocol](https://cgit.freedesktop.org/wayland/wayland-protocols/tree/unstable/xdg-decoration/xdg-decoration-unstable-v1.xml)
to request decorations to be drawn around its windows. This protocol is part
of wayland-protocols 1.15, and mandatory at build time. If the running
compositor does not support this protocol, a very simple frame will be drawn by
GLFW itself, using the [viewporter
protocol](https://cgit.freedesktop.org/wayland/wayland-protocols/tree/stable/viewporter/viewporter.xml)
alongside
[subsurfaces](https://cgit.freedesktop.org/wayland/wayland/tree/protocol/wayland.xml#n2598).
This protocol is part of wayland-protocols 1.4, and mandatory at build time.
If the running compositor does not support this protocol either, no decorations
will be drawn around windows.
@section compat_glx GLX extensions
The GLX API is the default API used to create OpenGL contexts on Unix-like
systems using the X Window System.
GLFW uses the GLX 1.3 `GLXFBConfig` functions to enumerate and select framebuffer pixel
formats. If GLX 1.3 is not supported, @ref glfwInit will fail.
GLFW uses the `GLX_MESA_swap_control,` `GLX_EXT_swap_control` and
`GLX_SGI_swap_control` extensions to provide vertical retrace synchronization
(or _vsync_), in that order of preference. Where none of these extension are
available, calling @ref glfwSwapInterval will have no effect.
GLFW uses the `GLX_ARB_multisample` extension to create contexts with
multisampling anti-aliasing. Where this extension is unavailable, the
`GLFW_SAMPLES` hint will have no effect.
GLFW uses the `GLX_ARB_create_context` extension when available, even when
creating OpenGL contexts of version 2.1 and below. Where this extension is
unavailable, the `GLFW_CONTEXT_VERSION_MAJOR` and `GLFW_CONTEXT_VERSION_MINOR`
hints will only be partially supported, the `GLFW_OPENGL_DEBUG_CONTEXT` hint
will have no effect, and setting the `GLFW_OPENGL_PROFILE` or
`GLFW_OPENGL_FORWARD_COMPAT` hints to `GLFW_TRUE` will cause @ref
glfwCreateWindow to fail.
GLFW uses the `GLX_ARB_create_context_profile` extension to provide support for
context profiles. Where this extension is unavailable, setting the
`GLFW_OPENGL_PROFILE` hint to anything but `GLFW_OPENGL_ANY_PROFILE`, or setting
`GLFW_CLIENT_API` to anything but `GLFW_OPENGL_API` or `GLFW_NO_API` will cause
@ref glfwCreateWindow to fail.
GLFW uses the `GLX_ARB_context_flush_control` extension to provide control over
whether a context is flushed when it is released (made non-current). Where this
extension is unavailable, the `GLFW_CONTEXT_RELEASE_BEHAVIOR` hint will have no
effect and the context will always be flushed when released.
GLFW uses the `GLX_ARB_framebuffer_sRGB` and `GLX_EXT_framebuffer_sRGB`
extensions to provide support for sRGB framebuffers. Where both of these
extensions are unavailable, the `GLFW_SRGB_CAPABLE` hint will have no effect.
@section compat_wgl WGL extensions
The WGL API is used to create OpenGL contexts on Microsoft Windows and other
implementations of the Win32 API, such as Wine.
GLFW uses either the `WGL_EXT_extension_string` or the
`WGL_ARB_extension_string` extension to check for the presence of all other WGL
extensions listed below. If both are available, the EXT one is preferred. If
neither is available, no other extensions are used and many GLFW features
related to context creation will have no effect or cause errors when used.
GLFW uses the `WGL_EXT_swap_control` extension to provide vertical retrace
synchronization (or _vsync_). Where this extension is unavailable, calling @ref
glfwSwapInterval will have no effect.
GLFW uses the `WGL_ARB_pixel_format` and `WGL_ARB_multisample` extensions to
create contexts with multisampling anti-aliasing. Where these extensions are
unavailable, the `GLFW_SAMPLES` hint will have no effect.
GLFW uses the `WGL_ARB_create_context` extension when available, even when
creating OpenGL contexts of version 2.1 and below. Where this extension is
unavailable, the `GLFW_CONTEXT_VERSION_MAJOR` and `GLFW_CONTEXT_VERSION_MINOR`
hints will only be partially supported, the `GLFW_OPENGL_DEBUG_CONTEXT` hint
will have no effect, and setting the `GLFW_OPENGL_PROFILE` or
`GLFW_OPENGL_FORWARD_COMPAT` hints to `GLFW_TRUE` will cause @ref
glfwCreateWindow to fail.
GLFW uses the `WGL_ARB_create_context_profile` extension to provide support for
context profiles. Where this extension is unavailable, setting the
`GLFW_OPENGL_PROFILE` hint to anything but `GLFW_OPENGL_ANY_PROFILE` will cause
@ref glfwCreateWindow to fail.
GLFW uses the `WGL_ARB_context_flush_control` extension to provide control over
whether a context is flushed when it is released (made non-current). Where this
extension is unavailable, the `GLFW_CONTEXT_RELEASE_BEHAVIOR` hint will have no
effect and the context will always be flushed when released.
GLFW uses the `WGL_ARB_framebuffer_sRGB` and `WGL_EXT_framebuffer_sRGB`
extensions to provide support for sRGB framebuffers. Where both of these
extension are unavailable, the `GLFW_SRGB_CAPABLE` hint will have no effect.
@section compat_osx OpenGL on macOS
Support for OpenGL 3.2 and above was introduced with OS X 10.7 and even then
only forward-compatible, core profile contexts are supported. Support for
OpenGL 4.1 was introduced with OS X 10.9, also limited to forward-compatible,
core profile contexts. There is also still no mechanism for requesting debug
contexts or no-error contexts. Versions of Mac OS X earlier than 10.7 support
at most OpenGL version 2.1.
Because of this, on OS X 10.7 and later, the `GLFW_CONTEXT_VERSION_MAJOR` and
`GLFW_CONTEXT_VERSION_MINOR` hints will cause @ref glfwCreateWindow to fail if
given version 3.0 or 3.1. The `GLFW_OPENGL_FORWARD_COMPAT` hint must be set to
`GLFW_TRUE` and the `GLFW_OPENGL_PROFILE` hint must be set to
`GLFW_OPENGL_CORE_PROFILE` when creating OpenGL 3.2 and later contexts. The
`GLFW_OPENGL_DEBUG_CONTEXT` and `GLFW_CONTEXT_NO_ERROR` hints are ignored.
Also, on Mac OS X 10.6 and below, the `GLFW_CONTEXT_VERSION_MAJOR` and
`GLFW_CONTEXT_VERSION_MINOR` hints will fail if given a version above 2.1,
setting the `GLFW_OPENGL_PROFILE` or `GLFW_OPENGL_FORWARD_COMPAT` hints to
a non-default value will cause @ref glfwCreateWindow to fail and the
`GLFW_OPENGL_DEBUG_CONTEXT` hint is ignored.
@section compat_vulkan Vulkan loader and API
By default, GLFW uses the standard system-wide Vulkan loader to access the
Vulkan API on all platforms except macOS. This is installed by both graphics
drivers and Vulkan SDKs. If either the loader or at least one minimally
functional ICD is missing, @ref glfwVulkanSupported will return `GLFW_FALSE` and
all other Vulkan-related functions will fail with an @ref GLFW_API_UNAVAILABLE
error.
@section compat_wsi Vulkan WSI extensions
The Vulkan WSI extensions are used to create Vulkan surfaces for GLFW windows on
all supported platforms.
GLFW uses the `VK_KHR_surface` and `VK_KHR_win32_surface` extensions to create
surfaces on Microsoft Windows. If any of these extensions are not available,
@ref glfwGetRequiredInstanceExtensions will return an empty list and window
surface creation will fail.
GLFW uses the `VK_KHR_surface` and `VK_MVK_macos_surface` extensions to create
surfaces on macOS. If any of these extensions are not available, @ref
glfwGetRequiredInstanceExtensions will return an empty list and window surface
creation will fail.
GLFW uses the `VK_KHR_surface` and either the `VK_KHR_xlib_surface` or
`VK_KHR_xcb_surface` extensions to create surfaces on X11. If `VK_KHR_surface`
or both `VK_KHR_xlib_surface` and `VK_KHR_xcb_surface` are not available, @ref
glfwGetRequiredInstanceExtensions will return an empty list and window surface
creation will fail.
GLFW uses the `VK_KHR_surface` and `VK_KHR_wayland_surface` extensions to create
surfaces on Wayland. If any of these extensions are not available, @ref
glfwGetRequiredInstanceExtensions will return an empty list and window surface
creation will fail.
*/

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/*!
@page compile_guide Compiling GLFW
@tableofcontents
This is about compiling the GLFW library itself. For information on how to
build applications that use GLFW, see @ref build_guide.
@section compile_cmake Using CMake
GLFW uses [CMake](https://cmake.org/) to generate project files or makefiles
for a particular development environment. If you are on a Unix-like system such
as Linux or FreeBSD or have a package system like Fink, MacPorts, Cygwin or
Homebrew, you can install its CMake package. If not, you can download
installers for Windows and macOS from the
[CMake website](https://cmake.org/).
@note CMake only generates project files or makefiles. It does not compile the
actual GLFW library. To compile GLFW, first generate these files for your
chosen development environment and then use them to compile the actual GLFW
library.
@subsection compile_deps Dependencies
Once you have installed CMake, make sure that all other dependencies are
available. On some platforms, GLFW needs a few additional packages to be
installed. See the section for your chosen platform and development environment
below.
@subsubsection compile_deps_msvc Dependencies for Visual C++ on Windows
The Windows SDK bundled with Visual C++ already contains all the necessary
headers, link libraries and tools except for CMake. Move on to @ref
compile_generate.
@subsubsection compile_deps_mingw Dependencies for MinGW or MinGW-w64 on Windows
Both the MinGW and the MinGW-w64 packages already contain all the necessary
headers, link libraries and tools except for CMake. Move on to @ref
compile_generate.
@subsubsection compile_deps_mingw_cross Dependencies for MinGW or MinGW-w64 cross-compilation
Both Cygwin and many Linux distributions have MinGW or MinGW-w64 packages. For
example, Cygwin has the `mingw64-i686-gcc` and `mingw64-x86_64-gcc` packages
for 32- and 64-bit version of MinGW-w64, while Debian GNU/Linux and derivatives
like Ubuntu have the `mingw-w64` package for both.
GLFW has CMake toolchain files in the `CMake/` directory that set up
cross-compilation of Windows binaries. To use these files you add an option
when running `cmake` to generate the project files or makefiles:
@code{.sh}
cmake -DCMAKE_TOOLCHAIN_FILE=<toolchain-file> .
@endcode
The exact toolchain file to use depends on the prefix used by the MinGW or
MinGW-w64 binaries on your system. You can usually see this in the /usr
directory. For example, both the Debian/Ubuntu and Cygwin MinGW-w64 packages
have `/usr/x86_64-w64-mingw32` for the 64-bit compilers, so the correct
invocation would be:
@code{.sh}
cmake -DCMAKE_TOOLCHAIN_FILE=CMake/x86_64-w64-mingw32.cmake .
@endcode
For more details see the article
[CMake Cross Compiling](https://gitlab.kitware.com/cmake/community/wikis/doc/cmake/CrossCompiling) on
the CMake wiki.
Once you have this set up, move on to @ref compile_generate.
@subsubsection compile_deps_xcode Dependencies for Xcode on macOS
Xcode comes with all necessary tools except for CMake. The required headers
and libraries are included in the core macOS frameworks. Xcode can be
downloaded from the Mac App Store or from the ADC Member Center.
Once you have Xcode installed, move on to @ref compile_generate.
@subsubsection compile_deps_x11 Dependencies for Linux and X11
To compile GLFW for X11, you need to have the X11 packages installed, as well as
the basic development tools like GCC and make. For example, on Ubuntu and other
distributions based on Debian GNU/Linux, you need to install the `xorg-dev`
package, which pulls in all X.org header packages.
Once you have installed the necessary packages, move on to @ref
compile_generate.
@subsubsection compile_deps_wayland Dependencies for Linux and Wayland
To compile GLFW for Wayland, you need to have the Wayland packages installed,
as well as the basic development tools like GCC and make. For example, on
Ubuntu and other distributions based on Debian GNU/Linux, you need to install
the `libwayland-dev` package, which contains all Wayland headers and pulls in
wayland-scanner, as well as the `wayland-protocols` and `extra-cmake-modules`
packages.
Once you have installed the necessary packages, move on to @ref
compile_generate.
@subsection compile_deps_osmesa Dependencies for Linux and OSMesa
To compile GLFW for OSMesa, you need to install the OSMesa library and header
packages. For example, on Ubuntu and other distributions based on Debian
GNU/Linux, you need to install the `libosmesa6-dev` package. The OSMesa library
is required at runtime for context creation and is loaded on demand.
Once you have installed the necessary packages, move on to @ref
compile_generate.
@subsection compile_generate Generating build files with CMake
Once you have all necessary dependencies it is time to generate the project
files or makefiles for your development environment. CMake needs to know two
paths for this: the path to the _root_ directory of the GLFW source tree (i.e.
_not_ the `src` subdirectory) and the target path for the generated files and
compiled binaries. If these are the same, it is called an in-tree build,
otherwise it is called an out-of-tree build.
One of several advantages of out-of-tree builds is that you can generate files
and compile for different development environments using a single source tree.
@note This section is about generating the project files or makefiles necessary
to compile the GLFW library, not about compiling the actual library.
@subsubsection compile_generate_cli Generating files with the CMake command-line tool
To make an in-tree build, enter the _root_ directory of the GLFW source tree
(i.e. _not_ the `src` subdirectory) and run CMake. The current directory is
used as target path, while the path provided as an argument is used to find the
source tree.
@code{.sh}
cd <glfw-root-dir>
cmake .
@endcode
To make an out-of-tree build, make a directory outside of the source tree, enter
it and run CMake with the (relative or absolute) path to the root of the source
tree as an argument.
@code{.sh}
mkdir glfw-build
cd glfw-build
cmake <glfw-root-dir>
@endcode
Once you have generated the project files or makefiles for your chosen
development environment, move on to @ref compile_compile.
@subsubsection compile_generate_gui Generating files with the CMake GUI
If you are using the GUI version, choose the root of the GLFW source tree as
source location and the same directory or another, empty directory as the
destination for binaries. Choose _Configure_, change any options you wish to,
_Configure_ again to let the changes take effect and then _Generate_.
Once you have generated the project files or makefiles for your chosen
development environment, move on to @ref compile_compile.
@subsection compile_compile Compiling the library
You should now have all required dependencies and the project files or makefiles
necessary to compile GLFW. Go ahead and compile the actual GLFW library with
these files, as you would with any other project.
Once the GLFW library is compiled, you are ready to build your applications,
linking it to the GLFW library. See @ref build_guide for more information.
@subsection compile_options CMake options
The CMake files for GLFW provide a number of options, although not all are
available on all supported platforms. Some of these are de facto standards
among projects using CMake and so have no `GLFW_` prefix.
If you are using the GUI version of CMake, these are listed and can be changed
from there. If you are using the command-line version of CMake you can use the
`ccmake` ncurses GUI to set options. Some package systems like Ubuntu and other
distributions based on Debian GNU/Linux have this tool in a separate
`cmake-curses-gui` package.
Finally, if you don't want to use any GUI, you can set options from the `cmake`
command-line with the `-D` flag.
@code{.sh}
cmake -DBUILD_SHARED_LIBS=ON .
@endcode
@subsubsection compile_options_shared Shared CMake options
@anchor BUILD_SHARED_LIBS
__BUILD_SHARED_LIBS__ determines whether GLFW is built as a static
library or as a DLL / shared library / dynamic library.
@anchor GLFW_BUILD_EXAMPLES
__GLFW_BUILD_EXAMPLES__ determines whether the GLFW examples are built
along with the library.
@anchor GLFW_BUILD_TESTS
__GLFW_BUILD_TESTS__ determines whether the GLFW test programs are
built along with the library.
@anchor GLFW_BUILD_DOCS
__GLFW_BUILD_DOCS__ determines whether the GLFW documentation is built along
with the library.
@anchor GLFW_VULKAN_STATIC
__GLFW_VULKAN_STATIC__ determines whether to use the Vulkan loader linked
directly with the application.
@subsubsection compile_options_win32 Windows specific CMake options
@anchor USE_MSVC_RUNTIME_LIBRARY_DLL
__USE_MSVC_RUNTIME_LIBRARY_DLL__ determines whether to use the DLL version or the
static library version of the Visual C++ runtime library. If set to `ON`, the
DLL version of the Visual C++ library is used.
@anchor GLFW_USE_HYBRID_HPG
__GLFW_USE_HYBRID_HPG__ determines whether to export the `NvOptimusEnablement` and
`AmdPowerXpressRequestHighPerformance` symbols, which force the use of the
high-performance GPU on Nvidia Optimus and AMD PowerXpress systems. These symbols
need to be exported by the EXE to be detected by the driver, so the override
will not work if GLFW is built as a DLL.
@section compile_manual Compiling GLFW manually
If you wish to compile GLFW without its CMake build environment then you will
have to do at least some of the platform detection yourself. GLFW needs
a configuration macro to be defined in order to know what window system it's
being compiled for and also has optional, platform-specific ones for various
features.
When building with CMake, the `glfw_config.h` configuration header is generated
based on the current platform and CMake options. The GLFW CMake environment
defines @b GLFW_USE_CONFIG_H, which causes this header to be included by
`internal.h`. Without this macro, GLFW will expect the necessary configuration
macros to be defined on the command-line.
The window creation API is used to create windows, handle input, monitors, gamma
ramps and clipboard. The options are:
- @b _GLFW_COCOA to use the Cocoa frameworks
- @b _GLFW_WIN32 to use the Win32 API
- @b _GLFW_X11 to use the X Window System
- @b _GLFW_WAYLAND to use the Wayland API (experimental and incomplete)
- @b _GLFW_OSMESA to use the OSMesa API (headless and non-interactive)
If you are building GLFW as a shared library / dynamic library / DLL then you
must also define @b _GLFW_BUILD_DLL. Otherwise, you must not define it.
If you are linking the Vulkan loader directly with your application then you
must also define @b _GLFW_VULKAN_STATIC. Otherwise, GLFW will attempt to use the
external version.
If you are using a custom name for the Vulkan, EGL, GLX, OSMesa, OpenGL, GLESv1
or GLESv2 library, you can override the default names by defining those you need
of @b _GLFW_VULKAN_LIBRARY, @b _GLFW_EGL_LIBRARY, @b _GLFW_GLX_LIBRARY, @b
_GLFW_OSMESA_LIBRARY, @b _GLFW_OPENGL_LIBRARY, @b _GLFW_GLESV1_LIBRARY and @b
_GLFW_GLESV2_LIBRARY. Otherwise, GLFW will use the built-in default names.
For the EGL context creation API, the following options are available:
- @b _GLFW_USE_EGLPLATFORM_H to use an existing `EGL/eglplatform.h` header file
for native handle types (fallback)
@note None of the @ref build_macros may be defined during the compilation of
GLFW. If you define any of these in your build files, make sure they are not
applied to the GLFW sources.
*/

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/*!
@page context_guide Context guide
@tableofcontents
This guide introduces the OpenGL and OpenGL ES context related functions of
GLFW. For details on a specific function in this category, see the @ref
context. There are also guides for the other areas of the GLFW API.
- @ref intro_guide
- @ref window_guide
- @ref vulkan_guide
- @ref monitor_guide
- @ref input_guide
@section context_object Context objects
A window object encapsulates both a top-level window and an OpenGL or OpenGL ES
context. It is created with @ref glfwCreateWindow and destroyed with @ref
glfwDestroyWindow or @ref glfwTerminate. See @ref window_creation for more
information.
As the window and context are inseparably linked, the window object also serves
as the context handle.
To test the creation of various kinds of contexts and see their properties, run
the `glfwinfo` test program.
@note Vulkan does not have a context and the Vulkan instance is created via the
Vulkan API itself. If you will be using Vulkan to render to a window, disable
context creation by setting the [GLFW_CLIENT_API](@ref GLFW_CLIENT_API_hint)
hint to `GLFW_NO_API`. For more information, see the @ref vulkan_guide.
@subsection context_hints Context creation hints
There are a number of hints, specified using @ref glfwWindowHint, related to
what kind of context is created. See
[context related hints](@ref window_hints_ctx) in the window guide.
@subsection context_sharing Context object sharing
When creating a window and its OpenGL or OpenGL ES context with @ref
glfwCreateWindow, you can specify another window whose context the new one
should share its objects (textures, vertex and element buffers, etc.) with.
@code
GLFWwindow* second_window = glfwCreateWindow(640, 480, "Second Window", NULL, first_window);
@endcode
Object sharing is implemented by the operating system and graphics driver. On
platforms where it is possible to choose which types of objects are shared, GLFW
requests that all types are shared.
See the relevant chapter of the [OpenGL](https://www.opengl.org/registry/) or
[OpenGL ES](https://www.khronos.org/opengles/) reference documents for more
information. The name and number of this chapter unfortunately varies between
versions and APIs, but has at times been named _Shared Objects and Multiple
Contexts_.
GLFW comes with a barebones object sharing example program called `sharing`.
@subsection context_offscreen Offscreen contexts
GLFW doesn't support creating contexts without an associated window. However,
contexts with hidden windows can be created with the
[GLFW_VISIBLE](@ref GLFW_VISIBLE_hint) window hint.
@code
glfwWindowHint(GLFW_VISIBLE, GLFW_FALSE);
GLFWwindow* offscreen_context = glfwCreateWindow(640, 480, "", NULL, NULL);
@endcode
The window never needs to be shown and its context can be used as a plain
offscreen context. Depending on the window manager, the size of a hidden
window's framebuffer may not be usable or modifiable, so framebuffer
objects are recommended for rendering with such contexts.
You should still [process events](@ref events) as long as you have at least one
window, even if none of them are visible.
@macos The first time a window is created the menu bar is created. This is not
desirable for example when writing a command-line only application. Menu bar
creation can be disabled with the @ref GLFW_COCOA_MENUBAR init hint.
@subsection context_less Windows without contexts
You can disable context creation by setting the
[GLFW_CLIENT_API](@ref GLFW_CLIENT_API_hint) hint to `GLFW_NO_API`. Windows
without contexts must not be passed to @ref glfwMakeContextCurrent or @ref
glfwSwapBuffers.
@section context_current Current context
Before you can make OpenGL or OpenGL ES calls, you need to have a current
context of the correct type. A context can only be current for a single thread
at a time, and a thread can only have a single context current at a time.
When moving a context between threads, you must make it non-current on the old
thread before making it current on the new one.
The context of a window is made current with @ref glfwMakeContextCurrent.
@code
glfwMakeContextCurrent(window);
@endcode
The window of the current context is returned by @ref glfwGetCurrentContext.
@code
GLFWwindow* window = glfwGetCurrentContext();
@endcode
The following GLFW functions require a context to be current. Calling any these
functions without a current context will generate a @ref GLFW_NO_CURRENT_CONTEXT
error.
- @ref glfwSwapInterval
- @ref glfwExtensionSupported
- @ref glfwGetProcAddress
@section context_swap Buffer swapping
See @ref buffer_swap in the window guide.
@section context_glext OpenGL and OpenGL ES extensions
One of the benefits of OpenGL and OpenGL ES is their extensibility.
Hardware vendors may include extensions in their implementations that extend the
API before that functionality is included in a new version of the OpenGL or
OpenGL ES specification, and some extensions are never included and remain
as extensions until they become obsolete.
An extension is defined by:
- An extension name (e.g. `GL_ARB_debug_output`)
- New OpenGL tokens (e.g. `GL_DEBUG_SEVERITY_HIGH_ARB`)
- New OpenGL functions (e.g. `glGetDebugMessageLogARB`)
Note the `ARB` affix, which stands for Architecture Review Board and is used
for official extensions. The extension above was created by the ARB, but there
are many different affixes, like `NV` for Nvidia and `AMD` for, well, AMD. Any
group may also use the generic `EXT` affix. Lists of extensions, together with
their specifications, can be found at the
[OpenGL Registry](https://www.opengl.org/registry/) and
[OpenGL ES Registry](https://www.khronos.org/registry/gles/).
@subsection context_glext_auto Loading extension with a loader library
An extension loader library is the easiest and best way to access both OpenGL and
OpenGL ES extensions and modern versions of the core OpenGL or OpenGL ES APIs.
They will take care of all the details of declaring and loading everything you
need. One such library is [glad](https://github.com/Dav1dde/glad) and there are
several others.
The following example will use glad but all extension loader libraries work
similarly.
First you need to generate the source files using the glad Python script. This
example generates a loader for any version of OpenGL, which is the default for
both GLFW and glad, but loaders for OpenGL ES, as well as loaders for specific
API versions and extension sets can be generated. The generated files are
written to the `output` directory.
@code{.sh}
python main.py --generator c --no-loader --out-path output
@endcode
The `--no-loader` option is added because GLFW already provides a function for
loading OpenGL and OpenGL ES function pointers, one that automatically uses the
selected context creation API, and glad can call this instead of having to
implement its own. There are several other command-line options as well. See
the glad documentation for details.
Add the generated `output/src/glad.c`, `output/include/glad/glad.h` and
`output/include/KHR/khrplatform.h` files to your build. Then you need to
include the glad header file, which will replace the OpenGL header of your
development environment. By including the glad header before the GLFW header,
it suppresses the development environment's OpenGL or OpenGL ES header.
@code
#include <glad/glad.h>
#include <GLFW/glfw3.h>
@endcode
Finally you need to initialize glad once you have a suitable current context.
@code
window = glfwCreateWindow(640, 480, "My Window", NULL, NULL);
if (!window)
{
...
}
glfwMakeContextCurrent(window);
gladLoadGLLoader((GLADloadproc) glfwGetProcAddress);
@endcode
Once glad has been loaded, you have access to all OpenGL core and extension
functions supported by both the context you created and the glad loader you
generated and you are ready to start rendering.
You can specify a minimum required OpenGL or OpenGL ES version with
[context hints](@ref window_hints_ctx). If your needs are more complex, you can
check the actual OpenGL or OpenGL ES version with
[context attributes](@ref window_attribs_ctx), or you can check whether
a specific version is supported by the current context with the
`GLAD_GL_VERSION_x_x` booleans.
@code
if (GLAD_GL_VERSION_3_2)
{
// Call OpenGL 3.2+ specific code
}
@endcode
To check whether a specific extension is supported, use the `GLAD_GL_xxx`
booleans.
@code
if (GLAD_GL_ARB_debug_output)
{
// Use GL_ARB_debug_output
}
@endcode
@subsection context_glext_manual Loading extensions manually
__Do not use this technique__ unless it is absolutely necessary. An
[extension loader library](@ref context_glext_auto) will save you a ton of
tedious, repetitive, error prone work.
To use a certain extension, you must first check whether the context supports
that extension and then, if it introduces new functions, retrieve the pointers
to those functions. GLFW provides @ref glfwExtensionSupported and @ref
glfwGetProcAddress for manual loading of extensions and new API functions.
This section will demonstrate manual loading of OpenGL extensions. The loading
of OpenGL ES extensions is identical except for the name of the extension header.
@subsubsection context_glext_header The glext.h header
The `glext.h` extension header is a continually updated file that defines the
interfaces for all OpenGL extensions. The latest version of this can always be
found at the [OpenGL Registry](https://www.opengl.org/registry/). There are also
extension headers for the various versions of OpenGL ES at the
[OpenGL ES Registry](https://www.khronos.org/registry/gles/). It it strongly
recommended that you use your own copy of the extension header, as the one
included in your development environment may be several years out of date and
may not include the extensions you wish to use.
The header defines function pointer types for all functions of all extensions it
supports. These have names like `PFNGLGETDEBUGMESSAGELOGARBPROC` (for
`glGetDebugMessageLogARB`), i.e. the name is made uppercase and `PFN` (pointer
to function) and `PROC` (procedure) are added to the ends.
To include the extension header, define @ref GLFW_INCLUDE_GLEXT before including
the GLFW header.
@code
#define GLFW_INCLUDE_GLEXT
#include <GLFW/glfw3.h>
@endcode
@subsubsection context_glext_string Checking for extensions
A given machine may not actually support the extension (it may have older
drivers or a graphics card that lacks the necessary hardware features), so it
is necessary to check at run-time whether the context supports the extension.
This is done with @ref glfwExtensionSupported.
@code
if (glfwExtensionSupported("GL_ARB_debug_output"))
{
// The extension is supported by the current context
}
@endcode
The argument is a null terminated ASCII string with the extension name. If the
extension is supported, @ref glfwExtensionSupported returns `GLFW_TRUE`,
otherwise it returns `GLFW_FALSE`.
@subsubsection context_glext_proc Fetching function pointers
Many extensions, though not all, require the use of new OpenGL functions.
These functions often do not have entry points in the client API libraries of
your operating system, making it necessary to fetch them at run time. You can
retrieve pointers to these functions with @ref glfwGetProcAddress.
@code
PFNGLGETDEBUGMESSAGELOGARBPROC pfnGetDebugMessageLog = glfwGetProcAddress("glGetDebugMessageLogARB");
@endcode
In general, you should avoid giving the function pointer variables the (exact)
same name as the function, as this may confuse your linker. Instead, you can
use a different prefix, like above, or some other naming scheme.
Now that all the pieces have been introduced, here is what they might look like
when used together.
@code
#define GLFW_INCLUDE_GLEXT
#include <GLFW/glfw3.h>
#define glGetDebugMessageLogARB pfnGetDebugMessageLog
PFNGLGETDEBUGMESSAGELOGARBPROC pfnGetDebugMessageLog;
// Flag indicating whether the extension is supported
int has_ARB_debug_output = 0;
void load_extensions(void)
{
if (glfwExtensionSupported("GL_ARB_debug_output"))
{
pfnGetDebugMessageLog = (PFNGLGETDEBUGMESSAGELOGARBPROC)
glfwGetProcAddress("glGetDebugMessageLogARB");
has_ARB_debug_output = 1;
}
}
void some_function(void)
{
if (has_ARB_debug_output)
{
// Now the extension function can be called as usual
glGetDebugMessageLogARB(...);
}
}
@endcode
*/

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<p>
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</p>
</address>
</body>
</html>

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<a href="https://www.glfw.org/" id="glfwhome">GLFW</a>
<ul class="glfwnavbar">
<li><a href="https://www.glfw.org/documentation.html">Documentation</a></li>
<li><a href="https://www.glfw.org/download.html">Download</a></li>
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/*!
@page input_guide Input guide
@tableofcontents
This guide introduces the input related functions of GLFW. For details on
a specific function in this category, see the @ref input. There are also guides
for the other areas of GLFW.
- @ref intro_guide
- @ref window_guide
- @ref context_guide
- @ref vulkan_guide
- @ref monitor_guide
GLFW provides many kinds of input. While some can only be polled, like time, or
only received via callbacks, like scrolling, many provide both callbacks and
polling. Callbacks are more work to use than polling but is less CPU intensive
and guarantees that you do not miss state changes.
All input callbacks receive a window handle. By using the
[window user pointer](@ref window_userptr), you can access non-global structures
or objects from your callbacks.
To get a better feel for how the various events callbacks behave, run the
`events` test program. It register every callback supported by GLFW and prints
out all arguments provided for every event, along with time and sequence
information.
@section events Event processing
GLFW needs to poll the window system for events both to provide input to the
application and to prove to the window system that the application hasn't locked
up. Event processing is normally done each frame after
[buffer swapping](@ref buffer_swap). Even when you have no windows, event
polling needs to be done in order to receive monitor and joystick connection
events.
There are three functions for processing pending events. @ref glfwPollEvents,
processes only those events that have already been received and then returns
immediately.
@code
glfwPollEvents();
@endcode
This is the best choice when rendering continuously, like most games do.
If you only need to update the contents of the window when you receive new
input, @ref glfwWaitEvents is a better choice.
@code
glfwWaitEvents();
@endcode
It puts the thread to sleep until at least one event has been received and then
processes all received events. This saves a great deal of CPU cycles and is
useful for, for example, editing tools.
If you want to wait for events but have UI elements or other tasks that need
periodic updates, @ref glfwWaitEventsTimeout lets you specify a timeout.
@code
glfwWaitEventsTimeout(0.7);
@endcode
It puts the thread to sleep until at least one event has been received, or until
the specified number of seconds have elapsed. It then processes any received
events.
If the main thread is sleeping in @ref glfwWaitEvents, you can wake it from
another thread by posting an empty event to the event queue with @ref
glfwPostEmptyEvent.
@code
glfwPostEmptyEvent();
@endcode
Do not assume that callbacks will _only_ be called in response to the above
functions. While it is necessary to process events in one or more of the ways
above, window systems that require GLFW to register callbacks of its own can
pass events to GLFW in response to many window system function calls. GLFW will
pass those events on to the application callbacks before returning.
For example, on Windows the system function that @ref glfwSetWindowSize is
implemented with will send window size events directly to the event callback
that every window has and that GLFW implements for its windows. If you have set
a [window size callback](@ref window_size) GLFW will call it in turn with the
new size before everything returns back out of the @ref glfwSetWindowSize call.
@section input_keyboard Keyboard input
GLFW divides keyboard input into two categories; key events and character
events. Key events relate to actual physical keyboard keys, whereas character
events relate to the Unicode code points generated by pressing some of them.
Keys and characters do not map 1:1. A single key press may produce several
characters, and a single character may require several keys to produce. This
may not be the case on your machine, but your users are likely not all using the
same keyboard layout, input method or even operating system as you.
@subsection input_key Key input
If you wish to be notified when a physical key is pressed or released or when it
repeats, set a key callback.
@code
glfwSetKeyCallback(window, key_callback);
@endcode
The callback function receives the [keyboard key](@ref keys), platform-specific
scancode, key action and [modifier bits](@ref mods).
@code
void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
if (key == GLFW_KEY_E && action == GLFW_PRESS)
activate_airship();
}
@endcode
The action is one of `GLFW_PRESS`, `GLFW_REPEAT` or `GLFW_RELEASE`. The key
will be `GLFW_KEY_UNKNOWN` if GLFW lacks a key token for it, for example
_E-mail_ and _Play_ keys.
The scancode is unique for every key, regardless of whether it has a key token.
Scancodes are platform-specific but consistent over time, so keys will have
different scancodes depending on the platform but they are safe to save to disk.
You can query the scancode for any [named key](@ref keys) on the current
platform with @ref glfwGetKeyScancode.
@code
const int scancode = glfwGetKeyScancode(GLFW_KEY_X);
set_key_mapping(scancode, swap_weapons);
@endcode
The last reported state for every [named key](@ref keys) is also saved in
per-window state arrays that can be polled with @ref glfwGetKey.
@code
int state = glfwGetKey(window, GLFW_KEY_E);
if (state == GLFW_PRESS)
{
activate_airship();
}
@endcode
The returned state is one of `GLFW_PRESS` or `GLFW_RELEASE`.
This function only returns cached key event state. It does not poll the
system for the current physical state of the key.
@anchor GLFW_STICKY_KEYS
Whenever you poll state, you risk missing the state change you are looking for.
If a pressed key is released again before you poll its state, you will have
missed the key press. The recommended solution for this is to use a
key callback, but there is also the `GLFW_STICKY_KEYS` input mode.
@code
glfwSetInputMode(window, GLFW_STICKY_KEYS, GLFW_TRUE);
@endcode
When sticky keys mode is enabled, the pollable state of a key will remain
`GLFW_PRESS` until the state of that key is polled with @ref glfwGetKey. Once
it has been polled, if a key release event had been processed in the meantime,
the state will reset to `GLFW_RELEASE`, otherwise it will remain `GLFW_PRESS`.
@anchor GLFW_LOCK_KEY_MODS
If you wish to know what the state of the Caps Lock and Num Lock keys was when
input events were generated, set the `GLFW_LOCK_KEY_MODS` input mode.
@code
glfwSetInputMode(window, GLFW_LOCK_KEY_MODS, GLFW_TRUE);
@endcode
When this input mode is enabled, any callback that receives
[modifier bits](@ref mods) will have the @ref GLFW_MOD_CAPS_LOCK bit set if Caps
Lock was on when the event occurred and the @ref GLFW_MOD_NUM_LOCK bit set if
Num Lock was on.
The `GLFW_KEY_LAST` constant holds the highest value of any
[named key](@ref keys).
@subsection input_char Text input
GLFW supports text input in the form of a stream of
[Unicode code points](https://en.wikipedia.org/wiki/Unicode), as produced by the
operating system text input system. Unlike key input, text input obeys keyboard
layouts and modifier keys and supports composing characters using
[dead keys](https://en.wikipedia.org/wiki/Dead_key). Once received, you can
encode the code points into UTF-8 or any other encoding you prefer.
Because an `unsigned int` is 32 bits long on all platforms supported by GLFW,
you can treat the code point argument as native endian UTF-32.
If you wish to offer regular text input, set a character callback.
@code
glfwSetCharCallback(window, character_callback);
@endcode
The callback function receives Unicode code points for key events that would
have led to regular text input and generally behaves as a standard text field on
that platform.
@code
void character_callback(GLFWwindow* window, unsigned int codepoint)
{
}
@endcode
@subsection input_key_name Key names
If you wish to refer to keys by name, you can query the keyboard layout
dependent name of printable keys with @ref glfwGetKeyName.
@code
const char* key_name = glfwGetKeyName(GLFW_KEY_W, 0);
show_tutorial_hint("Press %s to move forward", key_name);
@endcode
This function can handle both [keys and scancodes](@ref input_key). If the
specified key is `GLFW_KEY_UNKNOWN` then the scancode is used, otherwise it is
ignored. This matches the behavior of the key callback, meaning the callback
arguments can always be passed unmodified to this function.
@section input_mouse Mouse input
Mouse input comes in many forms, including mouse motion, button presses and
scrolling offsets. The cursor appearance can also be changed, either to
a custom image or a standard cursor shape from the system theme.
@subsection cursor_pos Cursor position
If you wish to be notified when the cursor moves over the window, set a cursor
position callback.
@code
glfwSetCursorPosCallback(window, cursor_position_callback);
@endcode
The callback functions receives the cursor position, measured in screen
coordinates but relative to the top-left corner of the window content area. On
platforms that provide it, the full sub-pixel cursor position is passed on.
@code
static void cursor_position_callback(GLFWwindow* window, double xpos, double ypos)
{
}
@endcode
The cursor position is also saved per-window and can be polled with @ref
glfwGetCursorPos.
@code
double xpos, ypos;
glfwGetCursorPos(window, &xpos, &ypos);
@endcode
@subsection cursor_mode Cursor mode
@anchor GLFW_CURSOR
The `GLFW_CURSOR` input mode provides several cursor modes for special forms of
mouse motion input. By default, the cursor mode is `GLFW_CURSOR_NORMAL`,
meaning the regular arrow cursor (or another cursor set with @ref glfwSetCursor)
is used and cursor motion is not limited.
If you wish to implement mouse motion based camera controls or other input
schemes that require unlimited mouse movement, set the cursor mode to
`GLFW_CURSOR_DISABLED`.
@code
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
@endcode
This will hide the cursor and lock it to the specified window. GLFW will then
take care of all the details of cursor re-centering and offset calculation and
providing the application with a virtual cursor position. This virtual position
is provided normally via both the cursor position callback and through polling.
@note You should not implement your own version of this functionality using
other features of GLFW. It is not supported and will not work as robustly as
`GLFW_CURSOR_DISABLED`.
If you only wish the cursor to become hidden when it is over a window but still
want it to behave normally, set the cursor mode to `GLFW_CURSOR_HIDDEN`.
@code
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_HIDDEN);
@endcode
This mode puts no limit on the motion of the cursor.
To exit out of either of these special modes, restore the `GLFW_CURSOR_NORMAL`
cursor mode.
@code
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
@endcode
@anchor GLFW_RAW_MOUSE_MOTION
@subsection raw_mouse_motion Raw mouse motion
When the cursor is disabled, raw (unscaled and unaccelerated) mouse motion can
be enabled if available.
Raw mouse motion is closer to the actual motion of the mouse across a surface.
It is not affected by the scaling and acceleration applied to the motion of the
desktop cursor. That processing is suitable for a cursor while raw motion is
better for controlling for example a 3D camera. Because of this, raw mouse
motion is only provided when the cursor is disabled.
Call @ref glfwRawMouseMotionSupported to check if the current machine provides
raw motion and set the `GLFW_RAW_MOUSE_MOTION` input mode to enable it. It is
disabled by default.
@code
if (glfwRawMouseMotionSupported())
glfwSetInputMode(window, GLFW_RAW_MOUSE_MOTION, GLFW_TRUE);
@endcode
If supported, raw mouse motion can be enabled or disabled per-window and at any
time but it will only be provided when the cursor is disabled.
@subsection cursor_object Cursor objects
GLFW supports creating both custom and system theme cursor images, encapsulated
as @ref GLFWcursor objects. They are created with @ref glfwCreateCursor or @ref
glfwCreateStandardCursor and destroyed with @ref glfwDestroyCursor, or @ref
glfwTerminate, if any remain.
@subsubsection cursor_custom Custom cursor creation
A custom cursor is created with @ref glfwCreateCursor, which returns a handle to
the created cursor object. For example, this creates a 16x16 white square
cursor with the hot-spot in the upper-left corner:
@code
unsigned char pixels[16 * 16 * 4];
memset(pixels, 0xff, sizeof(pixels));
GLFWimage image;
image.width = 16;
image.height = 16;
image.pixels = pixels;
GLFWcursor* cursor = glfwCreateCursor(&image, 0, 0);
@endcode
If cursor creation fails, `NULL` will be returned, so it is necessary to check
the return value.
The image data is 32-bit, little-endian, non-premultiplied RGBA, i.e. eight bits
per channel with the red channel first. The pixels are arranged canonically as
sequential rows, starting from the top-left corner.
@subsubsection cursor_standard Standard cursor creation
A cursor with a [standard shape](@ref shapes) from the current system cursor
theme can be can be created with @ref glfwCreateStandardCursor.
@code
GLFWcursor* cursor = glfwCreateStandardCursor(GLFW_HRESIZE_CURSOR);
@endcode
These cursor objects behave in the exact same way as those created with @ref
glfwCreateCursor except that the system cursor theme provides the actual image.
@subsubsection cursor_destruction Cursor destruction
When a cursor is no longer needed, destroy it with @ref glfwDestroyCursor.
@code
glfwDestroyCursor(cursor);
@endcode
Cursor destruction always succeeds. If the cursor is current for any window,
that window will revert to the default cursor. This does not affect the cursor
mode. All remaining cursors are destroyed when @ref glfwTerminate is called.
@subsubsection cursor_set Cursor setting
A cursor can be set as current for a window with @ref glfwSetCursor.
@code
glfwSetCursor(window, cursor);
@endcode
Once set, the cursor image will be used as long as the system cursor is over the
content area of the window and the [cursor mode](@ref cursor_mode) is set
to `GLFW_CURSOR_NORMAL`.
A single cursor may be set for any number of windows.
To revert to the default cursor, set the cursor of that window to `NULL`.
@code
glfwSetCursor(window, NULL);
@endcode
When a cursor is destroyed, any window that has it set will revert to the
default cursor. This does not affect the cursor mode.
@subsection cursor_enter Cursor enter/leave events
If you wish to be notified when the cursor enters or leaves the content area of
a window, set a cursor enter/leave callback.
@code
glfwSetCursorEnterCallback(window, cursor_enter_callback);
@endcode
The callback function receives the new classification of the cursor.
@code
void cursor_enter_callback(GLFWwindow* window, int entered)
{
if (entered)
{
// The cursor entered the content area of the window
}
else
{
// The cursor left the content area of the window
}
}
@endcode
You can query whether the cursor is currently inside the content area of the
window with the [GLFW_HOVERED](@ref GLFW_HOVERED_attrib) window attribute.
@code
if (glfwGetWindowAttrib(window, GLFW_HOVERED))
{
highlight_interface();
}
@endcode
@subsection input_mouse_button Mouse button input
If you wish to be notified when a mouse button is pressed or released, set
a mouse button callback.
@code
glfwSetMouseButtonCallback(window, mouse_button_callback);
@endcode
The callback function receives the [mouse button](@ref buttons), button action
and [modifier bits](@ref mods).
@code
void mouse_button_callback(GLFWwindow* window, int button, int action, int mods)
{
if (button == GLFW_MOUSE_BUTTON_RIGHT && action == GLFW_PRESS)
popup_menu();
}
@endcode
The action is one of `GLFW_PRESS` or `GLFW_RELEASE`.
Mouse button states for [named buttons](@ref buttons) are also saved in
per-window state arrays that can be polled with @ref glfwGetMouseButton.
@code
int state = glfwGetMouseButton(window, GLFW_MOUSE_BUTTON_LEFT);
if (state == GLFW_PRESS)
{
upgrade_cow();
}
@endcode
The returned state is one of `GLFW_PRESS` or `GLFW_RELEASE`.
This function only returns cached mouse button event state. It does not poll
the system for the current state of the mouse button.
@anchor GLFW_STICKY_MOUSE_BUTTONS
Whenever you poll state, you risk missing the state change you are looking for.
If a pressed mouse button is released again before you poll its state, you will have
missed the button press. The recommended solution for this is to use a
mouse button callback, but there is also the `GLFW_STICKY_MOUSE_BUTTONS`
input mode.
@code
glfwSetInputMode(window, GLFW_STICKY_MOUSE_BUTTONS, GLFW_TRUE);
@endcode
When sticky mouse buttons mode is enabled, the pollable state of a mouse button
will remain `GLFW_PRESS` until the state of that button is polled with @ref
glfwGetMouseButton. Once it has been polled, if a mouse button release event
had been processed in the meantime, the state will reset to `GLFW_RELEASE`,
otherwise it will remain `GLFW_PRESS`.
The `GLFW_MOUSE_BUTTON_LAST` constant holds the highest value of any
[named button](@ref buttons).
@subsection scrolling Scroll input
If you wish to be notified when the user scrolls, whether with a mouse wheel or
touchpad gesture, set a scroll callback.
@code
glfwSetScrollCallback(window, scroll_callback);
@endcode
The callback function receives two-dimensional scroll offsets.
@code
void scroll_callback(GLFWwindow* window, double xoffset, double yoffset)
{
}
@endcode
A normal mouse wheel, being vertical, provides offsets along the Y-axis.
@section joystick Joystick input
The joystick functions expose connected joysticks and controllers, with both
referred to as joysticks. It supports up to sixteen joysticks, ranging from
`GLFW_JOYSTICK_1`, `GLFW_JOYSTICK_2` up to and including `GLFW_JOYSTICK_16` or
`GLFW_JOYSTICK_LAST`. You can test whether a [joystick](@ref joysticks) is
present with @ref glfwJoystickPresent.
@code
int present = glfwJoystickPresent(GLFW_JOYSTICK_1);
@endcode
Each joystick has zero or more axes, zero or more buttons, zero or more hats,
a human-readable name, a user pointer and an SDL compatible GUID.
When GLFW is initialized, detected joysticks are added to the beginning of
the array. Once a joystick is detected, it keeps its assigned ID until it is
disconnected or the library is terminated, so as joysticks are connected and
disconnected, there may appear gaps in the IDs.
Joystick axis, button and hat state is updated when polled and does not require
a window to be created or events to be processed. However, if you want joystick
connection and disconnection events reliably delivered to the
[joystick callback](@ref joystick_event) then you must
[process events](@ref events).
To see all the properties of all connected joysticks in real-time, run the
`joysticks` test program.
@subsection joystick_axis Joystick axis states
The positions of all axes of a joystick are returned by @ref
glfwGetJoystickAxes. See the reference documentation for the lifetime of the
returned array.
@code
int count;
const float* axes = glfwGetJoystickAxes(GLFW_JOYSTICK_5, &count);
@endcode
Each element in the returned array is a value between -1.0 and 1.0.
@subsection joystick_button Joystick button states
The states of all buttons of a joystick are returned by @ref
glfwGetJoystickButtons. See the reference documentation for the lifetime of the
returned array.
@code
int count;
const unsigned char* buttons = glfwGetJoystickButtons(GLFW_JOYSTICK_3, &count);
@endcode
Each element in the returned array is either `GLFW_PRESS` or `GLFW_RELEASE`.
For backward compatibility with earlier versions that did not have @ref
glfwGetJoystickHats, the button array by default also includes all hats. See
the reference documentation for @ref glfwGetJoystickButtons for details.
@subsection joystick_hat Joystick hat states
The states of all hats are returned by @ref glfwGetJoystickHats. See the
reference documentation for the lifetime of the returned array.
@code
int count;
const unsigned char* hats = glfwGetJoystickHats(GLFW_JOYSTICK_7, &count);
@endcode
Each element in the returned array is one of the following:
Name | Value
---- | -----
`GLFW_HAT_CENTERED` | 0
`GLFW_HAT_UP` | 1
`GLFW_HAT_RIGHT` | 2
`GLFW_HAT_DOWN` | 4
`GLFW_HAT_LEFT` | 8
`GLFW_HAT_RIGHT_UP` | `GLFW_HAT_RIGHT` \| `GLFW_HAT_UP`
`GLFW_HAT_RIGHT_DOWN` | `GLFW_HAT_RIGHT` \| `GLFW_HAT_DOWN`
`GLFW_HAT_LEFT_UP` | `GLFW_HAT_LEFT` \| `GLFW_HAT_UP`
`GLFW_HAT_LEFT_DOWN` | `GLFW_HAT_LEFT` \| `GLFW_HAT_DOWN`
The diagonal directions are bitwise combinations of the primary (up, right, down
and left) directions and you can test for these individually by ANDing it with
the corresponding direction.
@code
if (hats[2] & GLFW_HAT_RIGHT)
{
// State of hat 2 could be right-up, right or right-down
}
@endcode
For backward compatibility with earlier versions that did not have @ref
glfwGetJoystickHats, all hats are by default also included in the button array.
See the reference documentation for @ref glfwGetJoystickButtons for details.
@subsection joystick_name Joystick name
The human-readable, UTF-8 encoded name of a joystick is returned by @ref
glfwGetJoystickName. See the reference documentation for the lifetime of the
returned string.
@code
const char* name = glfwGetJoystickName(GLFW_JOYSTICK_4);
@endcode
Joystick names are not guaranteed to be unique. Two joysticks of the same model
and make may have the same name. Only the [joystick token](@ref joysticks) is
guaranteed to be unique, and only until that joystick is disconnected.
@subsection joystick_userptr Joystick user pointer
Each joystick has a user pointer that can be set with @ref
glfwSetJoystickUserPointer and queried with @ref glfwGetJoystickUserPointer.
This can be used for any purpose you need and will not be modified by GLFW. The
value will be kept until the joystick is disconnected or until the library is
terminated.
The initial value of the pointer is `NULL`.
@subsection joystick_event Joystick configuration changes
If you wish to be notified when a joystick is connected or disconnected, set
a joystick callback.
@code
glfwSetJoystickCallback(joystick_callback);
@endcode
The callback function receives the ID of the joystick that has been connected
and disconnected and the event that occurred.
@code
void joystick_callback(int jid, int event)
{
if (event == GLFW_CONNECTED)
{
// The joystick was connected
}
else if (event == GLFW_DISCONNECTED)
{
// The joystick was disconnected
}
}
@endcode
For joystick connection and disconnection events to be delivered on all
platforms, you need to call one of the [event processing](@ref events)
functions. Joystick disconnection may also be detected and the callback
called by joystick functions. The function will then return whatever it
returns for a disconnected joystick.
Only @ref glfwGetJoystickName and @ref glfwGetJoystickUserPointer will return
useful values for a disconnected joystick and only before the monitor callback
returns.
@subsection gamepad Gamepad input
The joystick functions provide unlabeled axes, buttons and hats, with no
indication of where they are located on the device. Their order may also vary
between platforms even with the same device.
To solve this problem the SDL community crowdsourced the
[SDL_GameControllerDB](https://github.com/gabomdq/SDL_GameControllerDB) project,
a database of mappings from many different devices to an Xbox-like gamepad.
GLFW supports this mapping format and contains a copy of the mappings
available at the time of release. See @ref gamepad_mapping for how to update
this at runtime. Mappings will be assigned to joysticks automatically any time
a joystick is connected or the mappings are updated.
You can check whether a joystick is both present and has a gamepad mapping with
@ref glfwJoystickIsGamepad.
@code
if (glfwJoystickIsGamepad(GLFW_JOYSTICK_2))
{
// Use as gamepad
}
@endcode
If you are only interested in gamepad input you can use this function instead of
@ref glfwJoystickPresent.
You can query the human-readable name provided by the gamepad mapping with @ref
glfwGetGamepadName. This may or may not be the same as the
[joystick name](@ref joystick_name).
@code
const char* name = glfwGetGamepadName(GLFW_JOYSTICK_7);
@endcode
To retrieve the gamepad state of a joystick, call @ref glfwGetGamepadState.
@code
GLFWgamepadstate state;
if (glfwGetGamepadState(GLFW_JOYSTICK_3, &state))
{
if (state.buttons[GLFW_GAMEPAD_BUTTON_A])
{
input_jump();
}
input_speed(state.axes[GLFW_GAMEPAD_AXIS_RIGHT_TRIGGER]);
}
@endcode
The @ref GLFWgamepadstate struct has two arrays; one for button states and one
for axis states. The values for each button and axis are the same as for the
@ref glfwGetJoystickButtons and @ref glfwGetJoystickAxes functions, i.e.
`GLFW_PRESS` or `GLFW_RELEASE` for buttons and -1.0 to 1.0 inclusive for axes.
The sizes of the arrays and the positions within each array are fixed.
The [button indices](@ref gamepad_buttons) are `GLFW_GAMEPAD_BUTTON_A`,
`GLFW_GAMEPAD_BUTTON_B`, `GLFW_GAMEPAD_BUTTON_X`, `GLFW_GAMEPAD_BUTTON_Y`,
`GLFW_GAMEPAD_BUTTON_LEFT_BUMPER`, `GLFW_GAMEPAD_BUTTON_RIGHT_BUMPER`,
`GLFW_GAMEPAD_BUTTON_BACK`, `GLFW_GAMEPAD_BUTTON_START`,
`GLFW_GAMEPAD_BUTTON_GUIDE`, `GLFW_GAMEPAD_BUTTON_LEFT_THUMB`,
`GLFW_GAMEPAD_BUTTON_RIGHT_THUMB`, `GLFW_GAMEPAD_BUTTON_DPAD_UP`,
`GLFW_GAMEPAD_BUTTON_DPAD_RIGHT`, `GLFW_GAMEPAD_BUTTON_DPAD_DOWN` and
`GLFW_GAMEPAD_BUTTON_DPAD_LEFT`.
For those who prefer, there are also the `GLFW_GAMEPAD_BUTTON_CROSS`,
`GLFW_GAMEPAD_BUTTON_CIRCLE`, `GLFW_GAMEPAD_BUTTON_SQUARE` and
`GLFW_GAMEPAD_BUTTON_TRIANGLE` aliases for the A, B, X and Y button indices.
The [axis indices](@ref gamepad_axes) are `GLFW_GAMEPAD_AXIS_LEFT_X`,
`GLFW_GAMEPAD_AXIS_LEFT_Y`, `GLFW_GAMEPAD_AXIS_RIGHT_X`,
`GLFW_GAMEPAD_AXIS_RIGHT_Y`, `GLFW_GAMEPAD_AXIS_LEFT_TRIGGER` and
`GLFW_GAMEPAD_AXIS_RIGHT_TRIGGER`.
The `GLFW_GAMEPAD_BUTTON_LAST` and `GLFW_GAMEPAD_AXIS_LAST` constants equal
the largest available index for each array.
@subsection gamepad_mapping Gamepad mappings
GLFW contains a copy of the mappings available in
[SDL_GameControllerDB](https://github.com/gabomdq/SDL_GameControllerDB) at the
time of release. Newer ones can be added at runtime with @ref
glfwUpdateGamepadMappings.
@code
const char* mappings = load_file_contents("game/data/gamecontrollerdb.txt");
glfwUpdateGamepadMappings(mappings);
@endcode
This function supports everything from single lines up to and including the
unmodified contents of the whole `gamecontrollerdb.txt` file.
Below is a description of the mapping format. Please keep in mind that __this
description is not authoritative__. The format is defined by the SDL and
SDL_GameControllerDB projects and their documentation and code takes precedence.
Each mapping is a single line of comma-separated values describing the GUID,
name and layout of the gamepad. Lines that do not begin with a hexadecimal
digit are ignored.
The first value is always the gamepad GUID, a 32 character long hexadecimal
string that typically identifies its make, model, revision and the type of
connection to the computer. When this information is not available, the GUID is
generated using the gamepad name. GLFW uses the SDL 2.0.5+ GUID format but can
convert from the older formats.
The second value is always the human-readable name of the gamepad.
All subsequent values are in the form `<field>:<value>` and describe the layout
of the mapping. These fields may not all be present and may occur in any order.
The button fields are `a`, `b`, `c`, `d`, `back`, `start`, `guide`, `dpup`,
`dpright`, `dpdown`, `dpleft`, `leftshoulder`, `rightshoulder`, `leftstick` and
`rightstick`.
The axis fields are `leftx`, `lefty`, `rightx`, `righty`, `lefttrigger` and
`righttrigger`.
The value of an axis or button field can be a joystick button, a joystick axis,
a hat bitmask or empty. Joystick buttons are specified as `bN`, for example
`b2` for the third button. Joystick axes are specified as `aN`, for example
`a7` for the eighth button. Joystick hat bit masks are specified as `hN.N`, for
example `h0.8` for left on the first hat. More than one bit may be set in the
mask.
Before an axis there may be a `+` or `-` range modifier, for example `+a3` for
the positive half of the fourth axis. This restricts input to only the positive
or negative halves of the joystick axis. After an axis or half-axis there may
be the `~` inversion modifier, for example `a2~` or `-a7~`. This negates the
values of the gamepad axis.
The hat bit mask match the [hat states](@ref hat_state) in the joystick
functions.
There is also the special `platform` field that specifies which platform the
mapping is valid for. Possible values are `Windows`, `Mac OS X` and `Linux`.
Below is an example of what a gamepad mapping might look like. It is the
one built into GLFW for Xbox controllers accessed via the XInput API on Windows.
This example has been broken into several lines to fit on the page, but real
gamepad mappings must be a single line.
@code{.unparsed}
78696e70757401000000000000000000,XInput Gamepad (GLFW),platform:Windows,a:b0,
b:b1,x:b2,y:b3,leftshoulder:b4,rightshoulder:b5,back:b6,start:b7,leftstick:b8,
rightstick:b9,leftx:a0,lefty:a1,rightx:a2,righty:a3,lefttrigger:a4,
righttrigger:a5,dpup:h0.1,dpright:h0.2,dpdown:h0.4,dpleft:h0.8,
@endcode
@note GLFW does not yet support the output range and modifiers `+` and `-` that
were recently added to SDL. The input modifiers `+`, `-` and `~` are supported
and described above.
@section time Time input
GLFW provides high-resolution time input, in seconds, with @ref glfwGetTime.
@code
double seconds = glfwGetTime();
@endcode
It returns the number of seconds since the timer was started when the library
was initialized with @ref glfwInit. The platform-specific time sources used
usually have micro- or nanosecond resolution.
You can modify the reference time with @ref glfwSetTime.
@code
glfwSetTime(4.0);
@endcode
This sets the timer to the specified time, in seconds.
You can also access the raw timer value, measured in 1&nbsp;/&nbsp;frequency
seconds, with @ref glfwGetTimerValue.
@code
uint64_t value = glfwGetTimerValue();
@endcode
The frequency of the raw timer varies depending on what time sources are
available on the machine. You can query its frequency, in Hz, with @ref
glfwGetTimerFrequency.
@code
uint64_t freqency = glfwGetTimerFrequency();
@endcode
@section clipboard Clipboard input and output
If the system clipboard contains a UTF-8 encoded string or if it can be
converted to one, you can retrieve it with @ref glfwGetClipboardString. See the
reference documentation for the lifetime of the returned string.
@code
const char* text = glfwGetClipboardString(NULL);
if (text)
{
insert_text(text);
}
@endcode
If the clipboard is empty or if its contents could not be converted, `NULL` is
returned.
The contents of the system clipboard can be set to a UTF-8 encoded string with
@ref glfwSetClipboardString.
@code
glfwSetClipboardString(NULL, "A string with words in it");
@endcode
@section path_drop Path drop input
If you wish to receive the paths of files and/or directories dropped on
a window, set a file drop callback.
@code
glfwSetDropCallback(window, drop_callback);
@endcode
The callback function receives an array of paths encoded as UTF-8.
@code
void drop_callback(GLFWwindow* window, int count, const char** paths)
{
int i;
for (i = 0; i < count; i++)
handle_dropped_file(paths[i]);
}
@endcode
The path array and its strings are only valid until the file drop callback
returns, as they may have been generated specifically for that event. You need
to make a deep copy of the array if you want to keep the paths.
*/

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/*!
@page internals_guide Internal structure
@tableofcontents
There are several interfaces inside GLFW. Each interface has its own area of
responsibility and its own naming conventions.
@section internals_public Public interface
The most well-known is the public interface, described in the glfw3.h header
file. This is implemented in source files shared by all platforms and these
files contain no platform-specific code. This code usually ends up calling the
platform and internal interfaces to do the actual work.
The public interface uses the OpenGL naming conventions except with GLFW and
glfw instead of GL and gl. For struct members, where OpenGL sets no precedent,
it use headless camel case.
Examples: `glfwCreateWindow`, `GLFWwindow`, `GLFW_RED_BITS`
@section internals_native Native interface
The [native interface](@ref native) is a small set of publicly available
but platform-specific functions, described in the glfw3native.h header file and
used to gain access to the underlying window, context and (on some platforms)
display handles used by the platform interface.
The function names of the native interface are similar to those of the public
interface, but embeds the name of the interface that the returned handle is
from.
Examples: `glfwGetX11Window`, `glfwGetWGLContext`
@section internals_internal Internal interface
The internal interface consists of utility functions used by all other
interfaces. It is shared code implemented in the same shared source files as
the public and event interfaces. The internal interface is described in the
internal.h header file.
The internal interface is in charge of GLFW's global data, which it stores in
a `_GLFWlibrary` struct named `_glfw`.
The internal interface uses the same style as the public interface, except all
global names have a leading underscore.
Examples: `_glfwIsValidContextConfig`, `_GLFWwindow`, `_glfw.monitorCount`
@section internals_platform Platform interface
The platform interface implements all platform-specific operations as a service
to the public interface. This includes event processing. The platform
interface is never directly called by application code and never directly calls
application-provided callbacks. It is also prohibited from modifying the
platform-independent part of the internal structs. Instead, it calls the event
interface when events interesting to GLFW are received.
The platform interface mirrors those parts of the public interface that needs to
perform platform-specific operations on some or all platforms. The are also
named the same except that the glfw function prefix is replaced by
_glfwPlatform.
Examples: `_glfwPlatformCreateWindow`
The platform interface also defines structs that contain platform-specific
global and per-object state. Their names mirror those of the internal
interface, except that an interface-specific suffix is added.
Examples: `_GLFWwindowX11`, `_GLFWcontextWGL`
These structs are incorporated as members into the internal interface structs
using special macros that name them after the specific interface used. This
prevents shared code from accidentally using these members.
Examples: `window->win32.handle`, `_glfw.x11.display`
@section internals_event Event interface
The event interface is implemented in the same shared source files as the public
interface and is responsible for delivering the events it receives to the
application, either via callbacks, via window state changes or both.
The function names of the event interface use a `_glfwInput` prefix and the
ObjectEvent pattern.
Examples: `_glfwInputWindowFocus`, `_glfwInputCursorPos`
@section internals_static Static functions
Static functions may be used by any interface and have no prefixes or suffixes.
These use headless camel case.
Examples: `isValidElementForJoystick`
@section internals_config Configuration macros
GLFW uses a number of configuration macros to select at compile time which
interfaces and code paths to use. They are defined in the glfw_config.h header file,
which is generated from the `glfw_config.h.in` file by CMake.
Configuration macros the same style as tokens in the public interface, except
with a leading underscore.
Examples: `_GLFW_WIN32`, `_GLFW_BUILD_DLL`
*/

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/*!
@page intro_guide Introduction to the API
@tableofcontents
This guide introduces the basic concepts of GLFW and describes initialization,
error handling and API guarantees and limitations. For a broad but shallow
tutorial, see @ref quick_guide instead. For details on a specific function in
this category, see the @ref init.
There are also guides for the other areas of GLFW.
- @ref window_guide
- @ref context_guide
- @ref vulkan_guide
- @ref monitor_guide
- @ref input_guide
@section intro_init Initialization and termination
Before most GLFW functions may be called, the library must be initialized.
This initialization checks what features are available on the machine,
enumerates monitors and joysticks, initializes the timer and performs any
required platform-specific initialization.
Only the following functions may be called before the library has been
successfully initialized, and only from the main thread.
- @ref glfwGetVersion
- @ref glfwGetVersionString
- @ref glfwGetError
- @ref glfwSetErrorCallback
- @ref glfwInitHint
- @ref glfwInit
- @ref glfwTerminate
Calling any other function before successful initialization will cause a @ref
GLFW_NOT_INITIALIZED error.
@subsection intro_init_init Initializing GLFW
The library is initialized with @ref glfwInit, which returns `GLFW_FALSE` if an
error occurred.
@code
if (!glfwInit())
{
// Handle initialization failure
}
@endcode
If any part of initialization fails, any parts that succeeded are terminated as
if @ref glfwTerminate had been called. The library only needs to be initialized
once and additional calls to an already initialized library will return
`GLFW_TRUE` immediately.
Once the library has been successfully initialized, it should be terminated
before the application exits. Modern systems are very good at freeing resources
allocated by programs that exit, but GLFW sometimes has to change global system
settings and these might not be restored without termination.
@subsection init_hints Initialization hints
Initialization hints are set before @ref glfwInit and affect how the library
behaves until termination. Hints are set with @ref glfwInitHint.
@code
glfwInitHint(GLFW_JOYSTICK_HAT_BUTTONS, GLFW_FALSE);
@endcode
The values you set hints to are never reset by GLFW, but they only take effect
during initialization. Once GLFW has been initialized, any values you set will
be ignored until the library is terminated and initialized again.
Some hints are platform specific. These may be set on any platform but they
will only affect their specific platform. Other platforms will ignore them.
Setting these hints requires no platform specific headers or functions.
@subsubsection init_hints_shared Shared init hints
@anchor GLFW_JOYSTICK_HAT_BUTTONS
__GLFW_JOYSTICK_HAT_BUTTONS__ specifies whether to also expose joystick hats as
buttons, for compatibility with earlier versions of GLFW that did not have @ref
glfwGetJoystickHats. Set this with @ref glfwInitHint.
@subsubsection init_hints_osx macOS specific init hints
@anchor GLFW_COCOA_CHDIR_RESOURCES_hint
__GLFW_COCOA_CHDIR_RESOURCES__ specifies whether to set the current directory to
the application to the `Contents/Resources` subdirectory of the application's
bundle, if present. Set this with @ref glfwInitHint.
@anchor GLFW_COCOA_MENUBAR_hint
__GLFW_COCOA_MENUBAR__ specifies whether to create a basic menu bar, either from
a nib or manually, when the first window is created, which is when AppKit is
initialized. Set this with @ref glfwInitHint.
@subsubsection init_hints_values Supported and default values
Initialization hint | Default value | Supported values
------------------------------- | ------------- | ----------------
@ref GLFW_JOYSTICK_HAT_BUTTONS | `GLFW_TRUE` | `GLFW_TRUE` or `GLFW_FALSE`
@ref GLFW_COCOA_CHDIR_RESOURCES | `GLFW_TRUE` | `GLFW_TRUE` or `GLFW_FALSE`
@ref GLFW_COCOA_MENUBAR | `GLFW_TRUE` | `GLFW_TRUE` or `GLFW_FALSE`
@subsection intro_init_terminate Terminating GLFW
Before your application exits, you should terminate the GLFW library if it has
been initialized. This is done with @ref glfwTerminate.
@code
glfwTerminate();
@endcode
This will destroy any remaining window, monitor and cursor objects, restore any
modified gamma ramps, re-enable the screensaver if it had been disabled and free
any other resources allocated by GLFW.
Once the library is terminated, it is as if it had never been initialized and
you will need to initialize it again before being able to use GLFW. If the
library was not initialized or had already been terminated, it return
immediately.
@section error_handling Error handling
Some GLFW functions have return values that indicate an error, but this is often
not very helpful when trying to figure out what happened or why it occurred.
Other functions have no return value reserved for errors, so error notification
needs a separate channel. Finally, far from all GLFW functions have return
values.
The last [error code](@ref errors) for the calling thread can be queried at any
time with @ref glfwGetError.
@code
int code = glfwGetError(NULL);
if (code != GLFW_NO_ERROR)
handle_error(code);
@endcode
If no error has occurred since the last call, @ref GLFW_NO_ERROR (zero) is
returned. The error is cleared before the function returns.
The error code indicates the general category of the error. Some error codes,
such as @ref GLFW_NOT_INITIALIZED has only a single meaning, whereas others like
@ref GLFW_PLATFORM_ERROR are used for many different errors.
GLFW often has more information about an error than its general category. You
can retrieve a UTF-8 encoded human-readable description along with the error
code. If no error has occurred since the last call, the description is set to
`NULL`.
@code
const char* description;
int code = glfwGetError(&description);
if (description)
display_error_message(code, description);
@endcode
The retrieved description string is only valid until the next error occurs.
This means you must make a copy of it if you want to keep it.
You can also set an error callback, which will be called each time an error
occurs. It is set with @ref glfwSetErrorCallback.
@code
glfwSetErrorCallback(error_callback);
@endcode
The error callback receives the same error code and human-readable description
returned by @ref glfwGetError.
@code
void error_callback(int code, const char* description)
{
display_error_message(code, description);
}
@endcode
The error callback is called after the error is stored, so calling @ref
glfwGetError from within the error callback returns the same values as the
callback argument.
The description string passed to the callback is only valid until the error
callback returns. This means you must make a copy of it if you want to keep it.
__Reported errors are never fatal.__ As long as GLFW was successfully
initialized, it will remain initialized and in a safe state until terminated
regardless of how many errors occur. If an error occurs during initialization
that causes @ref glfwInit to fail, any part of the library that was initialized
will be safely terminated.
Do not rely on a currently invalid call to generate a specific error, as in the
future that same call may generate a different error or become valid.
@section coordinate_systems Coordinate systems
GLFW has two primary coordinate systems: the _virtual screen_ and the window
_content area_ or _content area_. Both use the same unit: _virtual screen
coordinates_, or just _screen coordinates_, which don't necessarily correspond
to pixels.
<img src="spaces.svg" width="90%" />
Both the virtual screen and the content area coordinate systems have the X-axis
pointing to the right and the Y-axis pointing down.
Window and monitor positions are specified as the position of the upper-left
corners of their content areas relative to the virtual screen, while cursor
positions are specified relative to a window's content area.
Because the origin of the window's content area coordinate system is also the
point from which the window position is specified, you can translate content
area coordinates to the virtual screen by adding the window position. The
window frame, when present, extends out from the content area but does not
affect the window position.
Almost all positions and sizes in GLFW are measured in screen coordinates
relative to one of the two origins above. This includes cursor positions,
window positions and sizes, window frame sizes, monitor positions and video mode
resolutions.
Two exceptions are the [monitor physical size](@ref monitor_size), which is
measured in millimetres, and [framebuffer size](@ref window_fbsize), which is
measured in pixels.
Pixels and screen coordinates may map 1:1 on your machine, but they won't on
every other machine, for example on a Mac with a Retina display. The ratio
between screen coordinates and pixels may also change at run-time depending on
which monitor the window is currently considered to be on.
@section guarantees_limitations Guarantees and limitations
This section describes the conditions under which GLFW can be expected to
function, barring bugs in the operating system or drivers. Use of GLFW outside
of these limits may work on some platforms, or on some machines, or some of the
time, or on some versions of GLFW, but it may break at any time and this will
not be considered a bug.
@subsection lifetime Pointer lifetimes
GLFW will never free any pointer you provide to it and you must never free any
pointer it provides to you.
Many GLFW functions return pointers to dynamically allocated structures, strings
or arrays, and some callbacks are provided with strings or arrays. These are
always managed by GLFW and should never be freed by the application. The
lifetime of these pointers is documented for each GLFW function and callback.
If you need to keep this data, you must copy it before its lifetime expires.
Many GLFW functions accept pointers to structures or strings allocated by the
application. These are never freed by GLFW and are always the responsibility of
the application. If GLFW needs to keep the data in these structures or strings,
it is copied before the function returns.
Pointer lifetimes are guaranteed not to be shortened in future minor or patch
releases.
@subsection reentrancy Reentrancy
GLFW event processing and object destruction are not reentrant. This means that
the following functions must not be called from any callback function:
- @ref glfwDestroyWindow
- @ref glfwDestroyCursor
- @ref glfwPollEvents
- @ref glfwWaitEvents
- @ref glfwWaitEventsTimeout
- @ref glfwTerminate
These functions may be made reentrant in future minor or patch releases, but
functions not on this list will not be made non-reentrant.
@subsection thread_safety Thread safety
Most GLFW functions must only be called from the main thread (the thread that
calls main), but some may be called from any thread once the library has been
initialized. Before initialization the whole library is thread-unsafe.
The reference documentation for every GLFW function states whether it is limited
to the main thread.
Initialization, termination, event processing and the creation and
destruction of windows, cursors and OpenGL and OpenGL ES contexts are all
restricted to the main thread due to limitations of one or several platforms.
Because event processing must be performed on the main thread, all callbacks
except for the error callback will only be called on that thread. The error
callback may be called on any thread, as any GLFW function may generate errors.
The error code and description may be queried from any thread.
- @ref glfwGetError
Empty events may be posted from any thread.
- @ref glfwPostEmptyEvent
The window user pointer and close flag may be read and written from any thread,
but this is not synchronized by GLFW.
- @ref glfwGetWindowUserPointer
- @ref glfwSetWindowUserPointer
- @ref glfwWindowShouldClose
- @ref glfwSetWindowShouldClose
These functions for working with OpenGL and OpenGL ES contexts may be called
from any thread, but the window object is not synchronized by GLFW.
- @ref glfwMakeContextCurrent
- @ref glfwGetCurrentContext
- @ref glfwSwapBuffers
- @ref glfwSwapInterval
- @ref glfwExtensionSupported
- @ref glfwGetProcAddress
The raw timer functions may be called from any thread.
- @ref glfwGetTimerFrequency
- @ref glfwGetTimerValue
The regular timer may be used from any thread, but reading and writing the timer
offset is not synchronized by GLFW.
- @ref glfwGetTime
- @ref glfwSetTime
Library version information may be queried from any thread.
- @ref glfwGetVersion
- @ref glfwGetVersionString
All Vulkan related functions may be called from any thread.
- @ref glfwVulkanSupported
- @ref glfwGetRequiredInstanceExtensions
- @ref glfwGetInstanceProcAddress
- @ref glfwGetPhysicalDevicePresentationSupport
- @ref glfwCreateWindowSurface
GLFW uses synchronization objects internally only to manage the per-thread
context and error states. Additional synchronization is left to the
application.
Functions that may currently be called from any thread will always remain so,
but functions that are currently limited to the main thread may be updated to
allow calls from any thread in future releases.
@subsection compatibility Version compatibility
GLFW uses [Semantic Versioning](https://semver.org/). This guarantees source
and binary backward compatibility with earlier minor versions of the API. This
means that you can drop in a newer version of the library and existing programs
will continue to compile and existing binaries will continue to run.
Once a function or constant has been added, the signature of that function or
value of that constant will remain unchanged until the next major version of
GLFW. No compatibility of any kind is guaranteed between major versions.
Undocumented behavior, i.e. behavior that is not described in the documentation,
may change at any time until it is documented.
If the reference documentation and the implementation differ, the reference
documentation will almost always take precedence and the implementation will be
fixed in the next release. The reference documentation will also take
precedence over anything stated in a guide.
@subsection event_order Event order
The order of arrival of related events is not guaranteed to be consistent
across platforms. The exception is synthetic key and mouse button release
events, which are always delivered after the window defocus event.
@section intro_version Version management
GLFW provides mechanisms for identifying what version of GLFW your application
was compiled against as well as what version it is currently running against.
If you are loading GLFW dynamically (not just linking dynamically), you can use
this to verify that the library binary is compatible with your application.
@subsection intro_version_compile Compile-time version
The compile-time version of GLFW is provided by the GLFW header with the
`GLFW_VERSION_MAJOR`, `GLFW_VERSION_MINOR` and `GLFW_VERSION_REVISION` macros.
@code
printf("Compiled against GLFW %i.%i.%i\n",
GLFW_VERSION_MAJOR,
GLFW_VERSION_MINOR,
GLFW_VERSION_REVISION);
@endcode
@subsection intro_version_runtime Run-time version
The run-time version can be retrieved with @ref glfwGetVersion, a function that
may be called regardless of whether GLFW is initialized.
@code
int major, minor, revision;
glfwGetVersion(&major, &minor, &revision);
printf("Running against GLFW %i.%i.%i\n", major, minor, revision);
@endcode
@subsection intro_version_string Version string
GLFW 3 also provides a compile-time generated version string that describes the
version, platform, compiler and any platform-specific compile-time options.
This is primarily intended for submitting bug reports, to allow developers to
see which code paths are enabled in a binary.
The version string is returned by @ref glfwGetVersionString, a function that may
be called regardless of whether GLFW is initialized.
__Do not use the version string__ to parse the GLFW library version. The @ref
glfwGetVersion function already provides the version of the running library
binary.
The format of the string is as follows:
- The version of GLFW
- The name of the window system API
- The name of the context creation API
- Any additional options or APIs
For example, when compiling GLFW 3.0 with MinGW using the Win32 and WGL
back ends, the version string may look something like this:
@code
3.0.0 Win32 WGL MinGW
@endcode
*/

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/*!
@mainpage notitle
@section main_intro Introduction
GLFW is a free, Open Source, multi-platform library for OpenGL, OpenGL ES and
Vulkan application development. It provides a simple, platform-independent API
for creating windows, contexts and surfaces, reading input, handling events, etc.
@ref news_33 list new features, caveats and deprecations.
@ref quick_guide is a guide for users new to GLFW. It takes you through how to
write a small but complete program.
There are guides for each section of the API:
- @ref intro_guide – initialization, error handling and high-level design
- @ref window_guide – creating and working with windows and framebuffers
- @ref context_guide – working with OpenGL and OpenGL ES contexts
- @ref vulkan_guide - working with Vulkan objects and extensions
- @ref monitor_guide – enumerating and working with monitors and video modes
- @ref input_guide – receiving events, polling and processing input
Once you have written a program, see @ref compile_guide and @ref build_guide.
The [reference documentation](modules.html) provides more detailed information
about specific functions.
@ref moving_guide explains what has changed and how to update existing code to
use the new API.
There is a section on @ref guarantees_limitations for pointer lifetimes,
reentrancy, thread safety, event order and backward and forward compatibility.
The [FAQ](https://www.glfw.org/faq.html) answers many common questions about the
design, implementation and use of GLFW.
Finally, @ref compat_guide explains what APIs, standards and protocols GLFW uses
and what happens when they are not present on a given machine.
This documentation was generated with Doxygen. The sources for it are available
in both the [source distribution](https://www.glfw.org/download.html) and
[GitHub repository](https://github.com/glfw/glfw).
*/

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/*!
@page monitor_guide Monitor guide
@tableofcontents
This guide introduces the monitor related functions of GLFW. For details on
a specific function in this category, see the @ref monitor. There are also
guides for the other areas of GLFW.
- @ref intro_guide
- @ref window_guide
- @ref context_guide
- @ref vulkan_guide
- @ref input_guide
@section monitor_object Monitor objects
A monitor object represents a currently connected monitor and is represented as
a pointer to the [opaque](https://en.wikipedia.org/wiki/Opaque_data_type) type
@ref GLFWmonitor. Monitor objects cannot be created or destroyed by the
application and retain their addresses until the monitors they represent are
disconnected or until the library is [terminated](@ref intro_init_terminate).
Each monitor has a current video mode, a list of supported video modes,
a virtual position, a human-readable name, an estimated physical size and
a gamma ramp. One of the monitors is the primary monitor.
The virtual position of a monitor is in
[screen coordinates](@ref coordinate_systems) and, together with the current
video mode, describes the viewports that the connected monitors provide into the
virtual desktop that spans them.
To see how GLFW views your monitor setup and its available video modes, run the
`monitors` test program.
@subsection monitor_monitors Retrieving monitors
The primary monitor is returned by @ref glfwGetPrimaryMonitor. It is the user's
preferred monitor and is usually the one with global UI elements like task bar
or menu bar.
@code
GLFWmonitor* primary = glfwGetPrimaryMonitor();
@endcode
You can retrieve all currently connected monitors with @ref glfwGetMonitors.
See the reference documentation for the lifetime of the returned array.
@code
int count;
GLFWmonitor** monitors = glfwGetMonitors(&count);
@endcode
The primary monitor is always the first monitor in the returned array, but other
monitors may be moved to a different index when a monitor is connected or
disconnected.
@subsection monitor_event Monitor configuration changes
If you wish to be notified when a monitor is connected or disconnected, set
a monitor callback.
@code
glfwSetMonitorCallback(monitor_callback);
@endcode
The callback function receives the handle for the monitor that has been
connected or disconnected and the event that occurred.
@code
void monitor_callback(GLFWmonitor* monitor, int event)
{
if (event == GLFW_CONNECTED)
{
// The monitor was connected
}
else if (event == GLFW_DISCONNECTED)
{
// The monitor was disconnected
}
}
@endcode
If a monitor is disconnected, all windows that are full screen on it will be
switched to windowed mode before the callback is called. Only @ref
glfwGetMonitorName and @ref glfwGetMonitorUserPointer will return useful values
for a disconnected monitor and only before the monitor callback returns.
@section monitor_properties Monitor properties
Each monitor has a current video mode, a list of supported video modes,
a virtual position, a human-readable name, a user pointer, an estimated physical
size and a gamma ramp.
@subsection monitor_modes Video modes
GLFW generally does a good job selecting a suitable video mode when you create
a full screen window, change its video mode or make a windowed one full
screen, but it is sometimes useful to know exactly which video modes are
supported.
Video modes are represented as @ref GLFWvidmode structures. You can get an
array of the video modes supported by a monitor with @ref glfwGetVideoModes.
See the reference documentation for the lifetime of the returned array.
@code
int count;
GLFWvidmode* modes = glfwGetVideoModes(monitor, &count);
@endcode
To get the current video mode of a monitor call @ref glfwGetVideoMode. See the
reference documentation for the lifetime of the returned pointer.
@code
const GLFWvidmode* mode = glfwGetVideoMode(monitor);
@endcode
The resolution of a video mode is specified in
[screen coordinates](@ref coordinate_systems), not pixels.
@subsection monitor_size Physical size
The physical size of a monitor in millimetres, or an estimation of it, can be
retrieved with @ref glfwGetMonitorPhysicalSize. This has no relation to its
current _resolution_, i.e. the width and height of its current
[video mode](@ref monitor_modes).
@code
int width_mm, height_mm;
glfwGetMonitorPhysicalSize(monitor, &width_mm, &height_mm);
@endcode
While this can be used to calculate the raw DPI of a monitor, this is often not
useful. Instead use the [monitor content scale](@ref monitor_scale) and
[window content scale](@ref window_scale) to scale your content.
@subsection monitor_scale Content scale
The content scale for a monitor can be retrieved with @ref
glfwGetMonitorContentScale.
@code
float xscale, yscale;
glfwGetMonitorContentScale(monitor, &xscale, &yscale);
@endcode
The content scale is the ratio between the current DPI and the platform's
default DPI. This is especially important for text and any UI elements. If the
pixel dimensions of your UI scaled by this look appropriate on your machine then
it should appear at a reasonable size on other machines regardless of their DPI
and scaling settings. This relies on the system DPI and scaling settings being
somewhat correct.
The content scale may depend on both the monitor resolution and pixel density
and on user settings. It may be very different from the raw DPI calculated from
the physical size and current resolution.
@subsection monitor_pos Virtual position
The position of the monitor on the virtual desktop, in
[screen coordinates](@ref coordinate_systems), can be retrieved with @ref
glfwGetMonitorPos.
@code
int xpos, ypos;
glfwGetMonitorPos(monitor, &xpos, &ypos);
@endcode
@subsection monitor_workarea Work area
The area of a monitor not occupied by global task bars or menu bars is the work
area. This is specified in [screen coordinates](@ref coordinate_systems) and
can be retrieved with @ref glfwGetMonitorWorkarea.
@code
int xpos, ypos, width, height;
glfwGetMonitorWorkarea(monitor, &xpos, &ypos, &width, &height);
@endcode
@subsection monitor_name Human-readable name
The human-readable, UTF-8 encoded name of a monitor is returned by @ref
glfwGetMonitorName. See the reference documentation for the lifetime of the
returned string.
@code
const char* name = glfwGetMonitorName(monitor);
@endcode
Monitor names are not guaranteed to be unique. Two monitors of the same model
and make may have the same name. Only the monitor handle is guaranteed to be
unique, and only until that monitor is disconnected.
@subsection monitor_userptr User pointer
Each monitor has a user pointer that can be set with @ref
glfwSetMonitorUserPointer and queried with @ref glfwGetMonitorUserPointer. This
can be used for any purpose you need and will not be modified by GLFW. The
value will be kept until the monitor is disconnected or until the library is
terminated.
The initial value of the pointer is `NULL`.
@subsection monitor_gamma Gamma ramp
The gamma ramp of a monitor can be set with @ref glfwSetGammaRamp, which accepts
a monitor handle and a pointer to a @ref GLFWgammaramp structure.
@code
GLFWgammaramp ramp;
unsigned short red[256], green[256], blue[256];
ramp.size = 256;
ramp.red = red;
ramp.green = green;
ramp.blue = blue;
for (i = 0; i < ramp.size; i++)
{
// Fill out gamma ramp arrays as desired
}
glfwSetGammaRamp(monitor, &ramp);
@endcode
The gamma ramp data is copied before the function returns, so there is no need
to keep it around once the ramp has been set.
It is recommended that your gamma ramp have the same size as the current gamma
ramp for that monitor.
The current gamma ramp for a monitor is returned by @ref glfwGetGammaRamp. See
the reference documentation for the lifetime of the returned structure.
@code
const GLFWgammaramp* ramp = glfwGetGammaRamp(monitor);
@endcode
If you wish to set a regular gamma ramp, you can have GLFW calculate it for you
from the desired exponent with @ref glfwSetGamma, which in turn calls @ref
glfwSetGammaRamp with the resulting ramp.
@code
glfwSetGamma(monitor, 1.0);
@endcode
To experiment with gamma correction via the @ref glfwSetGamma function, run the
`gamma` test program.
@note The software controlled gamma ramp is applied _in addition_ to the
hardware gamma correction, which today is usually an approximation of sRGB
gamma. This means that setting a perfectly linear ramp, or gamma 1.0, will
produce the default (usually sRGB-like) behavior.
*/

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/*!
@page moving_guide Moving from GLFW 2 to 3
@tableofcontents
This is a transition guide for moving from GLFW 2 to 3. It describes what has
changed or been removed, but does _not_ include
[new features](@ref news) unless they are required when moving an existing code
base onto the new API. For example, the new multi-monitor functions are
required to create full screen windows with GLFW 3.
@section moving_removed Changed and removed features
@subsection moving_renamed_files Renamed library and header file
The GLFW 3 header is named @ref glfw3.h and moved to the `GLFW` directory, to
avoid collisions with the headers of other major versions. Similarly, the GLFW
3 library is named `glfw3,` except when it's installed as a shared library on
Unix-like systems, where it uses the
[soname](https://en.wikipedia.org/wiki/soname) `libglfw.so.3`.
@par Old syntax
@code
#include <GL/glfw.h>
@endcode
@par New syntax
@code
#include <GLFW/glfw3.h>
@endcode
@subsection moving_threads Removal of threading functions
The threading functions have been removed, including the per-thread sleep
function. They were fairly primitive, under-used, poorly integrated and took
time away from the focus of GLFW (i.e. context, input and window). There are
better threading libraries available and native threading support is available
in both [C++11](https://en.cppreference.com/w/cpp/thread) and
[C11](https://en.cppreference.com/w/c/thread), both of which are gaining
traction.
If you wish to use the C++11 or C11 facilities but your compiler doesn't yet
support them, see the
[TinyThread++](https://gitorious.org/tinythread/tinythreadpp) and
[TinyCThread](https://github.com/tinycthread/tinycthread) projects created by
the original author of GLFW. These libraries implement a usable subset of the
threading APIs in C++11 and C11, and in fact some GLFW 3 test programs use
TinyCThread.
However, GLFW 3 has better support for _use from multiple threads_ than GLFW
2 had. Contexts can be made current on any thread, although only a single
thread at a time, and the documentation explicitly states which functions may be
used from any thread and which must only be used from the main thread.
@par Removed functions
`glfwSleep`, `glfwCreateThread`, `glfwDestroyThread`, `glfwWaitThread`,
`glfwGetThreadID`, `glfwCreateMutex`, `glfwDestroyMutex`, `glfwLockMutex`,
`glfwUnlockMutex`, `glfwCreateCond`, `glfwDestroyCond`, `glfwWaitCond`,
`glfwSignalCond`, `glfwBroadcastCond` and `glfwGetNumberOfProcessors`.
@par Removed types
`GLFWthreadfun`
@subsection moving_image Removal of image and texture loading
The image and texture loading functions have been removed. They only supported
the Targa image format, making them mostly useful for beginner level examples.
To become of sufficiently high quality to warrant keeping them in GLFW 3, they
would need not only to support other formats, but also modern extensions to
OpenGL texturing. This would either add a number of external
dependencies (libjpeg, libpng, etc.), or force GLFW to ship with inline versions
of these libraries.
As there already are libraries doing this, it is unnecessary both to duplicate
the work and to tie the duplicate to GLFW. The resulting library would also be
platform-independent, as both OpenGL and stdio are available wherever GLFW is.
@par Removed functions
`glfwReadImage`, `glfwReadMemoryImage`, `glfwFreeImage`, `glfwLoadTexture2D`,
`glfwLoadMemoryTexture2D` and `glfwLoadTextureImage2D`.
@subsection moving_stdcall Removal of GLFWCALL macro
The `GLFWCALL` macro, which made callback functions use
[__stdcall](https://msdn.microsoft.com/en-us/library/zxk0tw93.aspx) on Windows,
has been removed. GLFW is written in C, not Pascal. Removing this macro means
there's one less thing for application programmers to remember, i.e. the
requirement to mark all callback functions with `GLFWCALL`. It also simplifies
the creation of DLLs and DLL link libraries, as there's no need to explicitly
disable `@n` entry point suffixes.
@par Old syntax
@code
void GLFWCALL callback_function(...);
@endcode
@par New syntax
@code
void callback_function(...);
@endcode
@subsection moving_window_handles Window handle parameters
Because GLFW 3 supports multiple windows, window handle parameters have been
added to all window-related GLFW functions and callbacks. The handle of
a newly created window is returned by @ref glfwCreateWindow (formerly
`glfwOpenWindow`). Window handles are pointers to the
[opaque](https://en.wikipedia.org/wiki/Opaque_data_type) type @ref GLFWwindow.
@par Old syntax
@code
glfwSetWindowTitle("New Window Title");
@endcode
@par New syntax
@code
glfwSetWindowTitle(window, "New Window Title");
@endcode
@subsection moving_monitor Explicit monitor selection
GLFW 3 provides support for multiple monitors. To request a full screen mode window,
instead of passing `GLFW_FULLSCREEN` you specify which monitor you wish the
window to use. The @ref glfwGetPrimaryMonitor function returns the monitor that
GLFW 2 would have selected, but there are many other
[monitor functions](@ref monitor_guide). Monitor handles are pointers to the
[opaque](https://en.wikipedia.org/wiki/Opaque_data_type) type @ref GLFWmonitor.
@par Old basic full screen
@code
glfwOpenWindow(640, 480, 8, 8, 8, 0, 24, 0, GLFW_FULLSCREEN);
@endcode
@par New basic full screen
@code
window = glfwCreateWindow(640, 480, "My Window", glfwGetPrimaryMonitor(), NULL);
@endcode
@note The framebuffer bit depth parameters of `glfwOpenWindow` have been turned
into [window hints](@ref window_hints), but as they have been given
[sane defaults](@ref window_hints_values) you rarely need to set these hints.
@subsection moving_autopoll Removal of automatic event polling
GLFW 3 does not automatically poll for events in @ref glfwSwapBuffers, meaning
you need to call @ref glfwPollEvents or @ref glfwWaitEvents yourself. Unlike
buffer swap, which acts on a single window, the event processing functions act
on all windows at once.
@par Old basic main loop
@code
while (...)
{
// Process input
// Render output
glfwSwapBuffers();
}
@endcode
@par New basic main loop
@code
while (...)
{
// Process input
// Render output
glfwSwapBuffers(window);
glfwPollEvents();
}
@endcode
@subsection moving_context Explicit context management
Each GLFW 3 window has its own OpenGL context and only you, the application
programmer, can know which context should be current on which thread at any
given time. Therefore, GLFW 3 leaves that decision to you.
This means that you need to call @ref glfwMakeContextCurrent after creating
a window before you can call any OpenGL functions.
@subsection moving_hidpi Separation of window and framebuffer sizes
Window positions and sizes now use screen coordinates, which may not be the same
as pixels on machines with high-DPI monitors. This is important as OpenGL uses
pixels, not screen coordinates. For example, the rectangle specified with
`glViewport` needs to use pixels. Therefore, framebuffer size functions have
been added. You can retrieve the size of the framebuffer of a window with @ref
glfwGetFramebufferSize function. A framebuffer size callback has also been
added, which can be set with @ref glfwSetFramebufferSizeCallback.
@par Old basic viewport setup
@code
glfwGetWindowSize(&width, &height);
glViewport(0, 0, width, height);
@endcode
@par New basic viewport setup
@code
glfwGetFramebufferSize(window, &width, &height);
glViewport(0, 0, width, height);
@endcode
@subsection moving_window_close Window closing changes
The `GLFW_OPENED` window parameter has been removed. As long as the window has
not been destroyed, whether through @ref glfwDestroyWindow or @ref
glfwTerminate, the window is "open".
A user attempting to close a window is now just an event like any other. Unlike
GLFW 2, windows and contexts created with GLFW 3 will never be destroyed unless
you choose them to be. Each window now has a close flag that is set to
`GLFW_TRUE` when the user attempts to close that window. By default, nothing else
happens and the window stays visible. It is then up to you to either destroy
the window, take some other action or ignore the request.
You can query the close flag at any time with @ref glfwWindowShouldClose and set
it at any time with @ref glfwSetWindowShouldClose.
@par Old basic main loop
@code
while (glfwGetWindowParam(GLFW_OPENED))
{
...
}
@endcode
@par New basic main loop
@code
while (!glfwWindowShouldClose(window))
{
...
}
@endcode
The close callback no longer returns a value. Instead, it is called after the
close flag has been set so it can override its value, if it chooses to, before
event processing completes. You may however not call @ref glfwDestroyWindow
from the close callback (or any other window related callback).
@par Old syntax
@code
int GLFWCALL window_close_callback(void);
@endcode
@par New syntax
@code
void window_close_callback(GLFWwindow* window);
@endcode
@note GLFW never clears the close flag to `GLFW_FALSE`, meaning you can use it
for other reasons to close the window as well, for example the user choosing
Quit from an in-game menu.
@subsection moving_hints Persistent window hints
The `glfwOpenWindowHint` function has been renamed to @ref glfwWindowHint.
Window hints are no longer reset to their default values on window creation, but
instead retain their values until modified by @ref glfwWindowHint or @ref
glfwDefaultWindowHints, or until the library is terminated and re-initialized.
@subsection moving_video_modes Video mode enumeration
Video mode enumeration is now per-monitor. The @ref glfwGetVideoModes function
now returns all available modes for a specific monitor instead of requiring you
to guess how large an array you need. The `glfwGetDesktopMode` function, which
had poorly defined behavior, has been replaced by @ref glfwGetVideoMode, which
returns the current mode of a monitor.
@subsection moving_char_up Removal of character actions
The action parameter of the [character callback](@ref GLFWcharfun) has been
removed. This was an artefact of the origin of GLFW, i.e. being developed in
English by a Swede. However, many keyboard layouts require more than one key to
produce characters with diacritical marks. Even the Swedish keyboard layout
requires this for uncommon cases like ü.
@par Old syntax
@code
void GLFWCALL character_callback(int character, int action);
@endcode
@par New syntax
@code
void character_callback(GLFWwindow* window, int character);
@endcode
@subsection moving_cursorpos Cursor position changes
The `glfwGetMousePos` function has been renamed to @ref glfwGetCursorPos,
`glfwSetMousePos` to @ref glfwSetCursorPos and `glfwSetMousePosCallback` to @ref
glfwSetCursorPosCallback.
The cursor position is now `double` instead of `int`, both for the direct
functions and for the callback. Some platforms can provide sub-pixel cursor
movement and this data is now passed on to the application where available. On
platforms where this is not provided, the decimal part is zero.
GLFW 3 only allows you to position the cursor within a window using @ref
glfwSetCursorPos (formerly `glfwSetMousePos`) when that window is active.
Unless the window is active, the function fails silently.
@subsection moving_wheel Wheel position replaced by scroll offsets
The `glfwGetMouseWheel` function has been removed. Scrolling is the input of
offsets and has no absolute position. The mouse wheel callback has been
replaced by a [scroll callback](@ref GLFWscrollfun) that receives
two-dimensional floating point scroll offsets. This allows you to receive
precise scroll data from for example modern touchpads.
@par Old syntax
@code
void GLFWCALL mouse_wheel_callback(int position);
@endcode
@par New syntax
@code
void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
@endcode
@par Removed functions
`glfwGetMouseWheel`
@subsection moving_repeat Key repeat action
The `GLFW_KEY_REPEAT` enable has been removed and key repeat is always enabled
for both keys and characters. A new key action, `GLFW_REPEAT`, has been added
to allow the [key callback](@ref GLFWkeyfun) to distinguish an initial key press
from a repeat. Note that @ref glfwGetKey still returns only `GLFW_PRESS` or
`GLFW_RELEASE`.
@subsection moving_keys Physical key input
GLFW 3 key tokens map to physical keys, unlike in GLFW 2 where they mapped to
the values generated by the current keyboard layout. The tokens are named
according to the values they would have using the standard US layout, but this
is only a convenience, as most programmers are assumed to know that layout.
This means that (for example) `GLFW_KEY_LEFT_BRACKET` is always a single key and
is the same key in the same place regardless of what keyboard layouts the users
of your program has.
The key input facility was never meant for text input, although using it that
way worked slightly better in GLFW 2. If you were using it to input text, you
should be using the character callback instead, on both GLFW 2 and 3. This will
give you the characters being input, as opposed to the keys being pressed.
GLFW 3 has key tokens for all keys on a standard 105 key keyboard, so instead of
having to remember whether to check for `'a'` or `'A'`, you now check for
`GLFW_KEY_A`.
@subsection moving_joystick Joystick function changes
The `glfwGetJoystickPos` function has been renamed to @ref glfwGetJoystickAxes.
The `glfwGetJoystickParam` function and the `GLFW_PRESENT`, `GLFW_AXES` and
`GLFW_BUTTONS` tokens have been replaced by the @ref glfwJoystickPresent
function as well as axis and button counts returned by the @ref
glfwGetJoystickAxes and @ref glfwGetJoystickButtons functions.
@subsection moving_mbcs Win32 MBCS support
The Win32 port of GLFW 3 will not compile in
[MBCS mode](https://msdn.microsoft.com/en-us/library/5z097dxa.aspx).
However, because the use of the Unicode version of the Win32 API doesn't affect
the process as a whole, but only those windows created using it, it's perfectly
possible to call MBCS functions from other parts of the same application.
Therefore, even if an application using GLFW has MBCS mode code, there's no need
for GLFW itself to support it.
@subsection moving_windows Support for versions of Windows older than XP
All explicit support for version of Windows older than XP has been removed.
There is no code that actively prevents GLFW 3 from running on these earlier
versions, but it uses Win32 functions that those versions lack.
Windows XP was released in 2001, and by now (January 2015) it has not only
replaced almost all earlier versions of Windows, but is itself rapidly being
replaced by Windows 7 and 8. The MSDN library doesn't even provide
documentation for version older than Windows 2000, making it difficult to
maintain compatibility with these versions even if it was deemed worth the
effort.
The Win32 API has also not stood still, and GLFW 3 uses many functions only
present on Windows XP or later. Even supporting an OS as new as XP (new
from the perspective of GLFW 2, which still supports Windows 95) requires
runtime checking for a number of functions that are present only on modern
version of Windows.
@subsection moving_syskeys Capture of system-wide hotkeys
The ability to disable and capture system-wide hotkeys like Alt+Tab has been
removed. Modern applications, whether they're games, scientific visualisations
or something else, are nowadays expected to be good desktop citizens and allow
these hotkeys to function even when running in full screen mode.
@subsection moving_terminate Automatic termination
GLFW 3 does not register @ref glfwTerminate with `atexit` at initialization,
because `exit` calls registered functions from the calling thread and while it
is permitted to call `exit` from any thread, @ref glfwTerminate must only be
called from the main thread.
To release all resources allocated by GLFW, you should call @ref glfwTerminate
yourself, from the main thread, before the program terminates. Note that this
destroys all windows not already destroyed with @ref glfwDestroyWindow,
invalidating any window handles you may still have.
@subsection moving_glu GLU header inclusion
GLFW 3 does not by default include the GLU header and GLU itself has been
deprecated by [Khronos](https://en.wikipedia.org/wiki/Khronos_Group). __New
projects should not use GLU__, but if you need it for legacy code that
has been moved to GLFW 3, you can request that the GLFW header includes it by
defining @ref GLFW_INCLUDE_GLU before the inclusion of the GLFW header.
@par Old syntax
@code
#include <GL/glfw.h>
@endcode
@par New syntax
@code
#define GLFW_INCLUDE_GLU
#include <GLFW/glfw3.h>
@endcode
There are many libraries that offer replacements for the functionality offered
by GLU. For the matrix helper functions, see math libraries like
[GLM](https://github.com/g-truc/glm) (for C++),
[linmath.h](https://github.com/datenwolf/linmath.h) (for C) and others. For the
tessellation functions, see for example
[libtess2](https://github.com/memononen/libtess2).
@section moving_tables Name change tables
@subsection moving_renamed_functions Renamed functions
| GLFW 2 | GLFW 3 | Notes |
| --------------------------- | ----------------------------- | ----- |
| `glfwOpenWindow` | @ref glfwCreateWindow | All channel bit depths are now hints
| `glfwCloseWindow` | @ref glfwDestroyWindow | |
| `glfwOpenWindowHint` | @ref glfwWindowHint | Now accepts all `GLFW_*_BITS` tokens |
| `glfwEnable` | @ref glfwSetInputMode | |
| `glfwDisable` | @ref glfwSetInputMode | |
| `glfwGetMousePos` | @ref glfwGetCursorPos | |
| `glfwSetMousePos` | @ref glfwSetCursorPos | |
| `glfwSetMousePosCallback` | @ref glfwSetCursorPosCallback | |
| `glfwSetMouseWheelCallback` | @ref glfwSetScrollCallback | Accepts two-dimensional scroll offsets as doubles |
| `glfwGetJoystickPos` | @ref glfwGetJoystickAxes | |
| `glfwGetWindowParam` | @ref glfwGetWindowAttrib | |
| `glfwGetGLVersion` | @ref glfwGetWindowAttrib | Use `GLFW_CONTEXT_VERSION_MAJOR`, `GLFW_CONTEXT_VERSION_MINOR` and `GLFW_CONTEXT_REVISION` |
| `glfwGetDesktopMode` | @ref glfwGetVideoMode | Returns the current mode of a monitor |
| `glfwGetJoystickParam` | @ref glfwJoystickPresent | The axis and button counts are provided by @ref glfwGetJoystickAxes and @ref glfwGetJoystickButtons |
@subsection moving_renamed_types Renamed types
| GLFW 2 | GLFW 3 | Notes |
| ------------------- | --------------------- | |
| `GLFWmousewheelfun` | @ref GLFWscrollfun | |
| `GLFWmouseposfun` | @ref GLFWcursorposfun | |
@subsection moving_renamed_tokens Renamed tokens
| GLFW 2 | GLFW 3 | Notes |
| --------------------------- | ---------------------------- | ----- |
| `GLFW_OPENGL_VERSION_MAJOR` | `GLFW_CONTEXT_VERSION_MAJOR` | Renamed as it applies to OpenGL ES as well |
| `GLFW_OPENGL_VERSION_MINOR` | `GLFW_CONTEXT_VERSION_MINOR` | Renamed as it applies to OpenGL ES as well |
| `GLFW_FSAA_SAMPLES` | `GLFW_SAMPLES` | Renamed to match the OpenGL API |
| `GLFW_ACTIVE` | `GLFW_FOCUSED` | Renamed to match the window focus callback |
| `GLFW_WINDOW_NO_RESIZE` | `GLFW_RESIZABLE` | The default has been inverted |
| `GLFW_MOUSE_CURSOR` | `GLFW_CURSOR` | Used with @ref glfwSetInputMode |
| `GLFW_KEY_ESC` | `GLFW_KEY_ESCAPE` | |
| `GLFW_KEY_DEL` | `GLFW_KEY_DELETE` | |
| `GLFW_KEY_PAGEUP` | `GLFW_KEY_PAGE_UP` | |
| `GLFW_KEY_PAGEDOWN` | `GLFW_KEY_PAGE_DOWN` | |
| `GLFW_KEY_KP_NUM_LOCK` | `GLFW_KEY_NUM_LOCK` | |
| `GLFW_KEY_LCTRL` | `GLFW_KEY_LEFT_CONTROL` | |
| `GLFW_KEY_LSHIFT` | `GLFW_KEY_LEFT_SHIFT` | |
| `GLFW_KEY_LALT` | `GLFW_KEY_LEFT_ALT` | |
| `GLFW_KEY_LSUPER` | `GLFW_KEY_LEFT_SUPER` | |
| `GLFW_KEY_RCTRL` | `GLFW_KEY_RIGHT_CONTROL` | |
| `GLFW_KEY_RSHIFT` | `GLFW_KEY_RIGHT_SHIFT` | |
| `GLFW_KEY_RALT` | `GLFW_KEY_RIGHT_ALT` | |
| `GLFW_KEY_RSUPER` | `GLFW_KEY_RIGHT_SUPER` | |
*/

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/*!
@page news Release notes
@tableofcontents
@section news_33 Release notes for version 3.3
These are the release notes for version 3.3. For a more detailed view including
all fixed bugs see the [version history](https://www.glfw.org/changelog.html).
Please review the caveats, deprecations and removals if your project was written
against an earlier version of GLFW 3.
@subsection features_33 New features in version 3.3
@subsubsection gamepad_33 Gamepad input via SDL_GameControllerDB
GLFW can now remap game controllers to a standard Xbox-like layout using
a built-in copy of SDL_GameControllerDB. Call @ref glfwJoystickIsGamepad to
check if a joystick has a mapping, @ref glfwGetGamepadState to retrieve its
input state, @ref glfwUpdateGamepadMappings to add newer mappings and @ref
glfwGetGamepadName and @ref glfwGetJoystickGUID for mapping related information.
For more information see @ref gamepad.
@subsubsection moltenvk_33 Support for Vulkan on macOS via MoltenVK
GLFW now supports [MoltenVK](https://moltengl.com/moltenvk/), a Vulkan
implementation on top of the Metal API, and its `VK_MVK_macos_surface` window
surface creation extension. MoltenVK is included in the [macOS Vulkan
SDK](https://vulkan.lunarg.com/).
For more information see @ref vulkan_guide.
@subsubsection content_scale_33 Content scale queries for DPI-aware rendering
GLFW now provides content scales for windows and monitors, i.e. the ratio
between their current DPI and the platform's default DPI, with @ref
glfwGetWindowContentScale and @ref glfwGetMonitorContentScale.
Changes of the content scale of a window can be received with the window content
scale callback, set with @ref glfwSetWindowContentScaleCallback.
The @ref GLFW_SCALE_TO_MONITOR window hint enables automatic resizing of a
window by the content scale of the monitor it is placed, on platforms like
Windows where this is necessary. This takes effect both on creation and when
the window is moved between monitors. It is related to but different from
[GLFW_COCOA_RETINA_FRAMEBUFFER](@ref GLFW_COCOA_RETINA_FRAMEBUFFER_hint).
For more information see @ref window_scale.
@subsubsection setwindowattrib_33 Support for updating window attributes
GLFW now supports changing the [GLFW_DECORATED](@ref GLFW_DECORATED_attrib),
[GLFW_RESIZABLE](@ref GLFW_RESIZABLE_attrib),
[GLFW_FLOATING](@ref GLFW_FLOATING_attrib),
[GLFW_AUTO_ICONIFY](@ref GLFW_AUTO_ICONIFY_attrib) and
[GLFW_FOCUS_ON_SHOW](@ref GLFW_FOCUS_ON_SHOW_attrib) attributes for existing
windows with @ref glfwSetWindowAttrib.
For more information see @ref window_attribs.
@subsubsection raw_motion_33 Support for raw mouse motion
GLFW now supports raw (unscaled and unaccelerated) mouse motion in disabled
cursor mode with the [GLFW_RAW_MOUSE_MOTION](@ref GLFW_RAW_MOUSE_MOTION) input
mode. Raw mouse motion input is not yet implemented on macOS. Call @ref
glfwRawMouseMotionSupported to check if GLFW can provide raw mouse motion on the
current system.
For more information see @ref raw_mouse_motion.
@subsubsection joysticks_33 Joystick hats
GLFW can now return the state of hats (i.e. POVs or D-pads) of a joystick with
@ref glfwGetJoystickHats. For compatibility, hats are also exposed as buttons.
This can be disabled with the @ref GLFW_JOYSTICK_HAT_BUTTONS initialization
hint.
For more information see @ref joystick_hat.
@subsubsection geterror_33 Error query
GLFW now supports querying the last error code for the calling thread and its
human-readable description with @ref glfwGetError. This can be used instead of
or together with the error callback.
For more information see @ref error_handling.
@subsubsection init_hints_33 Support for initialization hints
GLFW now supports setting library initialization hints with @ref glfwInitHint.
These must be set before initialization to take effect. Some of these hints are
platform specific but are safe to set on any platform.
For more information see @ref init_hints.
@subsubsection attention_33 User attention request
GLFW now supports requesting user attention with @ref
glfwRequestWindowAttention. Where possible this calls attention to the
specified window. On platforms like macOS it calls attention to the whole
application.
For more information see @ref window_attention.
@subsubsection maximize_33 Window maximization callback
GLFW now supports notifying the application that the window has been maximized
@ref glfwSetWindowMaximizeCallback. This is called both when the window was
maximized by the user and when it was done with @ref glfwMaximizeWindow.
For more information see @ref window_maximize.
@subsubsection workarea_33 Query for the monitor work area
GLFW now supports querying the work area of a monitor, i.e. the area not
occupied by task bars or global menu bars, with @ref glfwGetMonitorWorkarea. On
platforms that lack this concept, the whole area of the monitor is returned.
For more information see @ref monitor_workarea.
@subsubsection transparency_33 Transparent windows and framebuffers
GLFW now supports the creation of windows with transparent framebuffers on
systems with desktop compositing enabled with the @ref
GLFW_TRANSPARENT_FRAMEBUFFER window hint and attribute. This hint must be set
before window creation and leaves any window decorations opaque.
GLFW now also supports whole window transparency with @ref glfwGetWindowOpacity
and @ref glfwSetWindowOpacity. This value controls the opacity of the whole
window including decorations and unlike framebuffer transparency can be changed
at any time after window creation.
For more information see @ref window_transparency.
@subsubsection key_scancode_33 Query for the scancode of a key
GLFW now supports querying the platform dependent scancode of any physical key
with @ref glfwGetKeyScancode.
For more information see @ref input_key.
@subsubsection center_cursor_33 Cursor centering window hint
GLFW now supports controlling whether the cursor is centered over newly created
full screen windows with the [GLFW_CENTER_CURSOR](@ref GLFW_CENTER_CURSOR_hint)
window hint. It is enabled by default.
@subsubsection cursor_hover_33 Mouse cursor hover window attribute
GLFW now supports polling whether the cursor is hovering over the window content
area with the [GLFW_HOVERED](@ref GLFW_HOVERED_attrib) window attribute. This
attribute corresponds to the [cursor enter/leave](@ref cursor_enter) event.
@subsubsection focusonshow_33 Window hint and attribute for input focus on show
GLFW now has the [GLFW_FOCUS_ON_SHOW](@ref GLFW_DECORATED_hint) window hint and
attribute for controlling whether a window gets input focus when shown. It is
enabled by default. It applies both when creating an visible window with @ref
glfwCreateWindow and when showing it with @ref glfwShowWindow.
This is a workaround for GLFW 3.0 lacking @ref glfwFocusWindow and will be
corrected in the next major version.
For more information see @ref window_hide.
@subsubsection device_userptr_33 Monitor and joystick user pointers
GLFW now supports setting and querying user pointers for connected monitors and
joysticks with @ref glfwSetMonitorUserPointer, @ref glfwGetMonitorUserPointer,
@ref glfwSetJoystickUserPointer and @ref glfwGetJoystickUserPointer.
For more information see @ref monitor_userptr and @ref joystick_userptr.
@subsubsection macos_nib_33 macOS menu bar from nib file
GLFW will now load a `MainMenu.nib` file if found in the `Contents/Resources`
directory of the application bundle, as a way to replace the GLFW menu bar
without recompiling GLFW. This behavior can be disabled with the
[GLFW_COCOA_MENUBAR](@ref GLFW_COCOA_MENUBAR_hint) initialization hint.
@subsubsection glext_33 Support for more context creation extensions
The context hint @ref GLFW_SRGB_CAPABLE now supports OpenGL ES via
`WGL_EXT_colorspace`, the context hint @ref GLFW_CONTEXT_NO_ERROR now supports
`WGL_ARB_create_context_no_error` and `GLX_ARB_create_context_no_error`, the
context hint @ref GLFW_CONTEXT_RELEASE_BEHAVIOR now supports
`EGL_KHR_context_flush_control` and @ref glfwGetProcAddress now supports
`EGL_KHR_get_all_proc_addresses`.
@subsubsection osmesa_33 OSMesa off-screen context creation support
GLFW now supports creating off-screen OpenGL contexts using
[OSMesa](https://www.mesa3d.org/osmesa.html) by setting
[GLFW_CONTEXT_CREATION_API](@ref GLFW_CONTEXT_CREATION_API_hint) to
`GLFW_OSMESA_CONTEXT_API`. Native access function have been added to retrieve
the OSMesa color and depth buffers.
There is also a new null backend that uses OSMesa as its native context
creation API, intended for automated testing. This backend does not provide
input.
@subsection caveats_33 Caveats for version 3.3
@subsubsection joystick_layout_33 Layout of joysticks have changed
The way joystick elements are arranged have changed to match SDL2 in order to
support SDL_GameControllerDB mappings. The layout of joysticks may
change again if required for compatibility with SDL2. If you need a known and
stable layout for game controllers, see if you can switch to @ref gamepad.
Existing code that depends on a specific joystick layout will likely have to be
updated.
@subsubsection wait_events_33 No window required to wait for events
The @ref glfwWaitEvents and @ref glfwWaitEventsTimeout functions no longer need
a window to be created to wait for events. Before version 3.3 these functions
would return immediately if there were no user-created windows. On platforms
where only windows can receive events, an internal helper window is used.
Existing code that depends on the earlier behavior will likely have to be
updated.
@subsubsection gamma_ramp_size_33 Gamma ramp size of 256 may be rejected
The documentation for versions before 3.3 stated that a gamma ramp size of 256
would always be accepted. This was never the case on X11 and could lead to
artifacts on macOS. The @ref glfwSetGamma function has been updated to always
generate a ramp of the correct size.
Existing code that hardcodes a size of 256 should be updated to use the size of
the current ramp of a monitor when setting a new ramp for that monitor.
@subsubsection xinput_deadzone_33 Windows XInput deadzone removed
GLFW no longer applies any deadzone to the input state received from the XInput
API. This was never done for any other platform joystick API so this change
makes the behavior more consistent but you will need to apply your own deadzone
if desired.
@subsubsection x11_clipboard_33 X11 clipboard transfer limits
GLFW now supports reading clipboard text via the `INCR` method, which removes
the limit on how much text can be read with @ref glfwGetClipboardString.
However, writing via this method is not yet supported, so you may not be able to
write a very large string with @ref glfwSetClipboardString even if you read it
from the clipboard earlier.
The exact size limit for writing to the clipboard is negotiated with each
receiving application but is at least several tens of kilobytes. Note that only
the read limit has changed. Any string that could be written before still can
be.
@subsubsection x11_linking_33 X11 extension libraries are loaded dynamically
GLFW now loads all X11 extension libraries at initialization. The only X11
library you need to link against is `libX11`. The header files for the
extension libraries are still required for compilation.
Existing projects and makefiles that link GLFW directly against the extension
libraries should still build correctly but will add these libraries as load-time
dependencies.
@subsubsection cmake_version_33 CMake 3.0 or later is required
The minimum CMake version has been raised from 2.8.12 to 3.0. This is only
a requirement of the GLFW CMake files. The GLFW source files do not depend on
CMake.
@subsection deprecations_33 Deprecations in version 3.3
@subsubsection charmods_callback_33 Character with modifiers callback
The character with modifiers callback set with @ref glfwSetCharModsCallback has
been deprecated and should if possible not be used.
Existing code should still work but further bug fixes will likely not be made.
The callback will be removed in the next major version.
@subsubsection clipboard_window_33 Window parameter to clipboard functions
The window parameter of the clipboard functions @ref glfwGetClipboardString and
@ref glfwSetClipboardString has been deprecated and is no longer used on any
platform. On platforms where the clipboard must be owned by a specific window,
an internal helper window is used.
Existing code should still work unless it depends on a specific window owning
the clipboard. New code may pass `NULL` as the window argument. The parameter
will be removed in a future release.
@subsection removals_33 Removals in 3.3
@subsubsection macos_options_33 macOS specific CMake options and macros
The `GLFW_USE_RETINA`, `GLFW_USE_CHDIR` and `GLFW_USE_MENUBAR` CMake options and
the `_GLFW_USE_RETINA`, `_GLFW_USE_CHDIR` and `_GLFW_USE_MENUBAR` compile-time
macros have been removed.
These options and macros are replaced by the window hint
[GLFW_COCOA_RETINA_FRAMEBUFFER](@ref GLFW_COCOA_RETINA_FRAMEBUFFER_hint)
and the init hints
[GLFW_COCOA_CHDIR_RESOURCES](@ref GLFW_COCOA_CHDIR_RESOURCES_hint) and
[GLFW_COCOA_MENUBAR](@ref GLFW_COCOA_MENUBAR_hint).
Existing projects and makefiles that set these options or define these macros
during compilation of GLFW will still build but it will have no effect and the
default behaviors will be used.
@subsubsection vulkan_sdk_33 LunarG Vulkan SDK dependency
The GLFW test programs that previously depended on the LunarG Vulkan SDK now
instead uses a Vulkan loader generated by
[glad2](https://github.com/Dav1dde/glad). This means the GLFW CMake files no
longer look for the Vulkan SDK.
Existing CMake projects that depended on the Vulkan SDK cache variables from
GLFW will need to call `find_package(Vulkan)` themselves. CMake 3.7 and later
already comes with a
[Vulkan find module](https://cmake.org/cmake/help/latest/module/FindVulkan.html)
similar to the one GLFW previously included.
@subsubsection lib_suffix_33 CMake option LIB_SUFFIX
The `LIB_SUFFIX` CMake option has been removed. GLFW now uses the
GNUInstallDirs CMake package to handle platform specific details like the
library directory suffix and the `LIB_SUFFIX` CMake option has been removed.
Existing projects and makefiles that set the `LIB_SUFFIX` option will use the
suffix chosen by the GNUInstallDirs package and the option will be ignored.
@subsubsection mir_removed_33 Mir support
The experimental Mir support has been completely removed as the Mir project has
implemented support for the Wayland protocol and is recommending that
applications use that instead.
Existing projects and makefiles that select Mir when compiling GLFW will fail.
Use Wayland or X11 instead.
@subsection symbols_33 New symbols in version 3.3
@subsubsection functions_33 New functions in version 3.3
- @ref glfwInitHint
- @ref glfwGetError
- @ref glfwGetMonitorWorkarea
- @ref glfwGetMonitorContentScale
- @ref glfwGetMonitorUserPointer
- @ref glfwSetMonitorUserPointer
- @ref glfwWindowHintString
- @ref glfwGetWindowContentScale
- @ref glfwGetWindowOpacity
- @ref glfwSetWindowOpacity
- @ref glfwRequestWindowAttention
- @ref glfwSetWindowAttrib
- @ref glfwSetWindowMaximizeCallback
- @ref glfwSetWindowContentScaleCallback
- @ref glfwRawMouseMotionSupported
- @ref glfwGetKeyScancode
- @ref glfwGetJoystickHats
- @ref glfwGetJoystickGUID
- @ref glfwGetJoystickUserPointer
- @ref glfwSetJoystickUserPointer
- @ref glfwJoystickIsGamepad
- @ref glfwUpdateGamepadMappings
- @ref glfwGetGamepadName
- @ref glfwGetGamepadState
@subsubsection types_33 New types in version 3.3
- @ref GLFWwindowmaximizefun
- @ref GLFWwindowcontentscalefun
- @ref GLFWgamepadstate
@subsubsection constants_33 New constants in version 3.3
- @ref GLFW_NO_ERROR
- @ref GLFW_JOYSTICK_HAT_BUTTONS
- @ref GLFW_COCOA_CHDIR_RESOURCES
- @ref GLFW_COCOA_MENUBAR
- @ref GLFW_CENTER_CURSOR
- @ref GLFW_TRANSPARENT_FRAMEBUFFER
- @ref GLFW_HOVERED
- @ref GLFW_FOCUS_ON_SHOW
- @ref GLFW_SCALE_TO_MONITOR
- @ref GLFW_COCOA_RETINA_FRAMEBUFFER
- @ref GLFW_COCOA_FRAME_NAME
- @ref GLFW_COCOA_GRAPHICS_SWITCHING
- @ref GLFW_X11_CLASS_NAME
- @ref GLFW_X11_INSTANCE_NAME
- @ref GLFW_OSMESA_CONTEXT_API
- @ref GLFW_HAT_CENTERED
- @ref GLFW_HAT_UP
- @ref GLFW_HAT_RIGHT
- @ref GLFW_HAT_DOWN
- @ref GLFW_HAT_LEFT
- @ref GLFW_HAT_RIGHT_UP
- @ref GLFW_HAT_RIGHT_DOWN
- @ref GLFW_HAT_LEFT_UP
- @ref GLFW_HAT_LEFT_DOWN
- @ref GLFW_MOD_CAPS_LOCK
- @ref GLFW_MOD_NUM_LOCK
- @ref GLFW_LOCK_KEY_MODS
- @ref GLFW_RAW_MOUSE_MOTION
- @ref GLFW_GAMEPAD_BUTTON_A
- @ref GLFW_GAMEPAD_BUTTON_B
- @ref GLFW_GAMEPAD_BUTTON_X
- @ref GLFW_GAMEPAD_BUTTON_Y
- @ref GLFW_GAMEPAD_BUTTON_LEFT_BUMPER
- @ref GLFW_GAMEPAD_BUTTON_RIGHT_BUMPER
- @ref GLFW_GAMEPAD_BUTTON_BACK
- @ref GLFW_GAMEPAD_BUTTON_START
- @ref GLFW_GAMEPAD_BUTTON_GUIDE
- @ref GLFW_GAMEPAD_BUTTON_LEFT_THUMB
- @ref GLFW_GAMEPAD_BUTTON_RIGHT_THUMB
- @ref GLFW_GAMEPAD_BUTTON_DPAD_UP
- @ref GLFW_GAMEPAD_BUTTON_DPAD_RIGHT
- @ref GLFW_GAMEPAD_BUTTON_DPAD_DOWN
- @ref GLFW_GAMEPAD_BUTTON_DPAD_LEFT
- @ref GLFW_GAMEPAD_BUTTON_LAST
- @ref GLFW_GAMEPAD_BUTTON_CROSS
- @ref GLFW_GAMEPAD_BUTTON_CIRCLE
- @ref GLFW_GAMEPAD_BUTTON_SQUARE
- @ref GLFW_GAMEPAD_BUTTON_TRIANGLE
- @ref GLFW_GAMEPAD_AXIS_LEFT_X
- @ref GLFW_GAMEPAD_AXIS_LEFT_Y
- @ref GLFW_GAMEPAD_AXIS_RIGHT_X
- @ref GLFW_GAMEPAD_AXIS_RIGHT_Y
- @ref GLFW_GAMEPAD_AXIS_LEFT_TRIGGER
- @ref GLFW_GAMEPAD_AXIS_RIGHT_TRIGGER
- @ref GLFW_GAMEPAD_AXIS_LAST
@section news_32 Release notes for 3.2
These are the release notes for version 3.2. For a more detailed view including
all fixed bugs see the [version history](https://www.glfw.org/changelog.html).
@subsection features_32 New features in version 3.2
@subsubsection news_32_vulkan Support for Vulkan
GLFW now supports basic integration with Vulkan with @ref glfwVulkanSupported,
@ref glfwGetRequiredInstanceExtensions, @ref glfwGetInstanceProcAddress, @ref
glfwGetPhysicalDevicePresentationSupport and @ref glfwCreateWindowSurface.
Vulkan header inclusion can be selected with
@ref GLFW_INCLUDE_VULKAN.
@subsubsection news_32_setwindowmonitor Window mode switching
GLFW now supports switching between windowed and full screen modes and updating
the monitor and desired resolution and refresh rate of full screen windows with
@ref glfwSetWindowMonitor.
@subsubsection news_32_maximize Window maxmimization support
GLFW now supports window maximization with @ref glfwMaximizeWindow and the
@ref GLFW_MAXIMIZED window hint and attribute.
@subsubsection news_32_focus Window input focus control
GLFW now supports giving windows input focus with @ref glfwFocusWindow.
@subsubsection news_32_sizelimits Window size limit support
GLFW now supports setting both absolute and relative window size limits with
@ref glfwSetWindowSizeLimits and @ref glfwSetWindowAspectRatio.
@subsubsection news_32_keyname Localized key names
GLFW now supports querying the localized name of printable keys with @ref
glfwGetKeyName, either by key token or by scancode.
@subsubsection news_32_waittimeout Wait for events with timeout
GLFW now supports waiting for events for a set amount of time with @ref
glfwWaitEventsTimeout.
@subsubsection news_32_icon Window icon support
GLFW now supports setting the icon of windows with @ref glfwSetWindowIcon.
@subsubsection news_32_timer Raw timer access
GLFW now supports raw timer values with @ref glfwGetTimerValue and @ref
glfwGetTimerFrequency.
@subsubsection news_32_joystick Joystick connection callback
GLFW now supports notifying when a joystick has been connected or disconnected
with @ref glfwSetJoystickCallback.
@subsubsection news_32_noapi Context-less windows
GLFW now supports creating windows without a OpenGL or OpenGL ES context by
setting the [GLFW_CLIENT_API](@ref GLFW_CLIENT_API_hint) hint to `GLFW_NO_API`.
@subsubsection news_32_contextapi Run-time context creation API selection
GLFW now supports selecting and querying the context creation API at run-time
with the @ref GLFW_CONTEXT_CREATION_API hint and attribute.
@subsubsection news_32_noerror Error-free context creation
GLFW now supports creating and querying OpenGL and OpenGL ES contexts that do
not emit errors with the @ref GLFW_CONTEXT_NO_ERROR hint, provided the machine
supports the `GL_KHR_no_error` extension.
@subsubsection news_32_cmake CMake config-file package support
GLFW now supports being used as a
[config-file package](@ref build_link_cmake_package) from other projects for
easy linking with the library and its dependencies.
@section news_31 Release notes for 3.1
These are the release notes for version 3.1. For a more detailed view including
all fixed bugs see the [version history](https://www.glfw.org/changelog.html).
@subsection features_31 New features in version 3.1
@subsubsection news_31_cursor Custom mouse cursor images
GLFW now supports creating and setting both custom cursor images and standard
cursor shapes. They are created with @ref glfwCreateCursor or @ref
glfwCreateStandardCursor, set with @ref glfwSetCursor and destroyed with @ref
glfwDestroyCursor.
@see @ref cursor_object
@subsubsection news_31_drop Path drop event
GLFW now provides a callback for receiving the paths of files and directories
dropped onto GLFW windows. The callback is set with @ref glfwSetDropCallback.
@see @ref path_drop
@subsubsection news_31_emptyevent Main thread wake-up
GLFW now provides the @ref glfwPostEmptyEvent function for posting an empty
event from another thread to the main thread event queue, causing @ref
glfwWaitEvents to return.
@see @ref events
@subsubsection news_31_framesize Window frame size query
GLFW now supports querying the size, on each side, of the frame around the
content area of a window, with @ref glfwGetWindowFrameSize.
@see [Window size](@ref window_size)
@subsubsection news_31_autoiconify Simultaneous multi-monitor rendering
GLFW now supports disabling auto-iconification of full screen windows with
the [GLFW_AUTO_ICONIFY](@ref GLFW_AUTO_ICONIFY_hint) window hint. This is
intended for people building multi-monitor installations, where you need windows
to stay in full screen despite losing input focus.
@subsubsection news_31_floating Floating windows
GLFW now supports floating windows, also called topmost or always on top, for
easier debugging with the @ref GLFW_FLOATING window hint and attribute.
@subsubsection news_31_focused Initially unfocused windows
GLFW now supports preventing a windowed mode window from gaining input focus on
creation, with the [GLFW_FOCUSED](@ref GLFW_FOCUSED_hint) window hint.
@subsubsection news_31_direct Direct access for window attributes and cursor position
GLFW now queries the window input focus, visibility and iconification attributes
and the cursor position directly instead of returning cached data.
@subsubsection news_31_charmods Character with modifiers callback
GLFW now provides a callback for character events with modifier key bits. The
callback is set with @ref glfwSetCharModsCallback. Unlike the regular character
callback, this will report character events that will not result in a character
being input, for example if the Control key is held down.
@see @ref input_char
@subsubsection news_31_single Single buffered framebuffers
GLFW now supports the creation of single buffered windows, with the @ref
GLFW_DOUBLEBUFFER hint.
@subsubsection news_31_glext Macro for including extension header
GLFW now includes the extension header appropriate for the chosen OpenGL or
OpenGL ES header when @ref GLFW_INCLUDE_GLEXT is defined. GLFW does not provide
these headers. They must be provided by your development environment or your
OpenGL or OpenGL ES SDK.
@subsubsection news_31_release Context release behaviors
GLFW now supports controlling and querying whether the pipeline is flushed when
a context is made non-current, with the @ref GLFW_CONTEXT_RELEASE_BEHAVIOR hint
and attribute, provided the machine supports the `GL_KHR_context_flush_control`
extension.
@subsubsection news_31_wayland (Experimental) Wayland support
GLFW now has an _experimental_ Wayland display protocol backend that can be
selected on Linux with a CMake option.
@subsubsection news_31_mir (Experimental) Mir support
GLFW now has an _experimental_ Mir display server backend that can be selected
on Linux with a CMake option.
@section news_30 Release notes for 3.0
These are the release notes for version 3.0. For a more detailed view including
all fixed bugs see the [version history](https://www.glfw.org/changelog.html).
@subsection features_30 New features in version 3.0
@subsubsection news_30_cmake CMake build system
GLFW now uses the CMake build system instead of the various makefiles and
project files used by earlier versions. CMake is available for all platforms
supported by GLFW, is present in most package systems and can generate
makefiles and/or project files for most popular development environments.
For more information on how to use CMake, see the
[CMake manual](https://cmake.org/cmake/help/documentation.html).
@subsubsection news_30_multiwnd Multi-window support
GLFW now supports the creation of multiple windows, each with their own OpenGL
or OpenGL ES context, and all window functions now take a window handle. Event
callbacks are now per-window and are provided with the handle of the window that
received the event. The @ref glfwMakeContextCurrent function has been added to
select which context is current on a given thread.
@subsubsection news_30_multimon Multi-monitor support
GLFW now explicitly supports multiple monitors. They can be enumerated with
@ref glfwGetMonitors, queried with @ref glfwGetVideoModes, @ref
glfwGetMonitorPos, @ref glfwGetMonitorName and @ref glfwGetMonitorPhysicalSize,
and specified at window creation to make the newly created window full screen on
that specific monitor.
@subsubsection news_30_unicode Unicode support
All string arguments to GLFW functions and all strings returned by GLFW now use
the UTF-8 encoding. This includes the window title, error string, clipboard
text, monitor and joystick names as well as the extension function arguments (as
ASCII is a subset of UTF-8).
@subsubsection news_30_clipboard Clipboard text I/O
GLFW now supports reading and writing plain text to and from the system
clipboard, with the @ref glfwGetClipboardString and @ref glfwSetClipboardString
functions.
@subsubsection news_30_gamma Gamma ramp support
GLFW now supports setting and reading back the gamma ramp of monitors, with the
@ref glfwGetGammaRamp and @ref glfwSetGammaRamp functions. There is also @ref
glfwSetGamma, which generates a ramp from a gamma value and then sets it.
@subsubsection news_30_gles OpenGL ES support
GLFW now supports the creation of OpenGL ES contexts, by setting the
[GLFW_CLIENT_API](@ref GLFW_CLIENT_API_hint) hint to `GLFW_OPENGL_ES_API`, where
creation of such contexts are supported. Note that GLFW _does not implement_
OpenGL ES, so your driver must provide support in a way usable by GLFW. Modern
Nvidia and Intel drivers support creation of OpenGL ES context using the GLX and
WGL APIs, while AMD provides an EGL implementation instead.
@subsubsection news_30_egl (Experimental) EGL support
GLFW now has an experimental EGL context creation back end that can be selected
through CMake options.
@subsubsection news_30_hidpi High-DPI support
GLFW now supports high-DPI monitors on both Windows and macOS, giving windows
full resolution framebuffers where other UI elements are scaled up. To achieve
this, @ref glfwGetFramebufferSize and @ref glfwSetFramebufferSizeCallback have
been added. These work with pixels, while the rest of the GLFW API works with
screen coordinates. This is important as OpenGL uses pixels, not screen
coordinates.
@subsubsection news_30_error Error callback
GLFW now has an error callback, which can provide your application with much
more detailed diagnostics than was previously possible. The callback is passed
an error code and a description string.
@subsubsection news_30_wndptr Per-window user pointer
Each window now has a user-defined pointer, retrieved with @ref
glfwGetWindowUserPointer and set with @ref glfwSetWindowUserPointer, to make it
easier to integrate GLFW into C++ code.
@subsubsection news_30_iconifyfun Window iconification callback
Each window now has a callback for iconification and restoration events,
which is set with @ref glfwSetWindowIconifyCallback.
@subsubsection news_30_wndposfun Window position callback
Each window now has a callback for position events, which is set with @ref
glfwSetWindowPosCallback.
@subsubsection news_30_wndpos Window position query
The position of a window can now be retrieved using @ref glfwGetWindowPos.
@subsubsection news_30_focusfun Window focus callback
Each windows now has a callback for focus events, which is set with @ref
glfwSetWindowFocusCallback.
@subsubsection news_30_enterleave Cursor enter/leave callback
Each window now has a callback for when the mouse cursor enters or leaves its
content area, which is set with @ref glfwSetCursorEnterCallback.
@subsubsection news_30_wndtitle Initial window title
The title of a window is now specified at creation time, as one of the arguments
to @ref glfwCreateWindow.
@subsubsection news_30_hidden Hidden windows
Windows can now be hidden with @ref glfwHideWindow, shown using @ref
glfwShowWindow and created initially hidden with the @ref GLFW_VISIBLE window
hint and attribute. This allows for off-screen rendering in a way compatible
with most drivers, as well as moving a window to a specific position before
showing it.
@subsubsection news_30_undecorated Undecorated windows
Windowed mode windows can now be created without decorations, e.g. things like
a frame, a title bar, with the @ref GLFW_DECORATED window hint and attribute.
This allows for the creation of things like splash screens.
@subsubsection news_30_keymods Modifier key bit masks
[Modifier key bit mask](@ref mods) parameters have been added to the
[mouse button](@ref GLFWmousebuttonfun) and [key](@ref GLFWkeyfun) callbacks.
@subsubsection news_30_scancode Platform-specific scancodes
A scancode parameter has been added to the [key callback](@ref GLFWkeyfun). Keys
that don't have a [key token](@ref keys) still get passed on with the key
parameter set to `GLFW_KEY_UNKNOWN`. These scancodes will vary between machines
and are intended to be used for key bindings.
@subsubsection news_30_jsname Joystick names
The name of a joystick can now be retrieved using @ref glfwGetJoystickName.
@subsubsection news_30_doxygen Doxygen documentation
You are reading it.
*/

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/*!
@page quick_guide Getting started
@tableofcontents
This guide takes you through writing a simple application using GLFW 3. The
application will create a window and OpenGL context, render a rotating triangle
and exit when the user closes the window or presses _Escape_. This guide will
introduce a few of the most commonly used functions, but there are many more.
This guide assumes no experience with earlier versions of GLFW. If you
have used GLFW 2 in the past, read @ref moving_guide, as some functions
behave differently in GLFW 3.
@section quick_steps Step by step
@subsection quick_include Including the GLFW header
In the source files of your application where you use OpenGL or GLFW, you need
to include the GLFW 3 header file.
@code
#include <GLFW/glfw3.h>
@endcode
This defines all the constants, types and function prototypes of the GLFW API.
It also includes the OpenGL header from your development environment and
defines all the constants and types necessary for it to work on your platform
without including any platform-specific headers.
In other words:
- Do _not_ include the OpenGL header yourself, as GLFW does this for you in
a platform-independent way
- Do _not_ include `windows.h` or other platform-specific headers unless
you plan on using those APIs yourself
- If you _do_ need to include such headers, include them _before_ the GLFW
header and it will detect this
On some platforms supported by GLFW the OpenGL header and link library only
expose older versions of OpenGL. The most extreme case is Windows, which only
exposes OpenGL 1.2. The easiest way to work around this is to use an
[extension loader library](@ref context_glext_auto).
If you are using such a library then you should include its header _before_ the
GLFW header. This lets it replace the OpenGL header included by GLFW without
conflicts. This example uses
[glad2](https://github.com/Dav1dde/glad), but the same rule applies to all such
libraries.
@code
#include <glad/gl.h>
#include <GLFW/glfw3.h>
@endcode
@subsection quick_init_term Initializing and terminating GLFW
Before you can use most GLFW functions, the library must be initialized. On
successful initialization, `GLFW_TRUE` is returned. If an error occurred,
`GLFW_FALSE` is returned.
@code
if (!glfwInit())
{
// Initialization failed
}
@endcode
Note that `GLFW_TRUE` and `GLFW_FALSE` are and will always be one and zero.
When you are done using GLFW, typically just before the application exits, you
need to terminate GLFW.
@code
glfwTerminate();
@endcode
This destroys any remaining windows and releases any other resources allocated by
GLFW. After this call, you must initialize GLFW again before using any GLFW
functions that require it.
@subsection quick_capture_error Setting an error callback
Most events are reported through callbacks, whether it's a key being pressed,
a GLFW window being moved, or an error occurring. Callbacks are C functions (or
C++ static methods) that are called by GLFW with arguments describing the event.
In case a GLFW function fails, an error is reported to the GLFW error callback.
You can receive these reports with an error callback. This function must have
the signature below but may do anything permitted in other callbacks.
@code
void error_callback(int error, const char* description)
{
fprintf(stderr, "Error: %s\n", description);
}
@endcode
Callback functions must be set, so GLFW knows to call them. The function to set
the error callback is one of the few GLFW functions that may be called before
initialization, which lets you be notified of errors both during and after
initialization.
@code
glfwSetErrorCallback(error_callback);
@endcode
@subsection quick_create_window Creating a window and context
The window and its OpenGL context are created with a single call to @ref
glfwCreateWindow, which returns a handle to the created combined window and
context object
@code
GLFWwindow* window = glfwCreateWindow(640, 480, "My Title", NULL, NULL);
if (!window)
{
// Window or OpenGL context creation failed
}
@endcode
This creates a 640 by 480 windowed mode window with an OpenGL context. If
window or OpenGL context creation fails, `NULL` will be returned. You should
always check the return value. While window creation rarely fails, context
creation depends on properly installed drivers and may fail even on machines
with the necessary hardware.
By default, the OpenGL context GLFW creates may have any version. You can
require a minimum OpenGL version by setting the `GLFW_CONTEXT_VERSION_MAJOR` and
`GLFW_CONTEXT_VERSION_MINOR` hints _before_ creation. If the required minimum
version is not supported on the machine, context (and window) creation fails.
@code
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
GLFWwindow* window = glfwCreateWindow(640, 480, "My Title", NULL, NULL);
if (!window)
{
// Window or context creation failed
}
@endcode
The window handle is passed to all window related functions and is provided to
along to all window related callbacks, so they can tell which window received
the event.
When a window and context is no longer needed, destroy it.
@code
glfwDestroyWindow(window);
@endcode
Once this function is called, no more events will be delivered for that window
and its handle becomes invalid.
@subsection quick_context_current Making the OpenGL context current
Before you can use the OpenGL API, you must have a current OpenGL context.
@code
glfwMakeContextCurrent(window);
@endcode
The context will remain current until you make another context current or until
the window owning the current context is destroyed.
If you are using an [extension loader library](@ref context_glext_auto) to
access modern OpenGL then this is when to initialize it, as the loader needs
a current context to load from. This example uses
[glad](https://github.com/Dav1dde/glad), but the same rule applies to all such
libraries.
@code
gladLoadGL(glfwGetProcAddress);
@endcode
@subsection quick_window_close Checking the window close flag
Each window has a flag indicating whether the window should be closed.
When the user attempts to close the window, either by pressing the close widget
in the title bar or using a key combination like Alt+F4, this flag is set to 1.
Note that __the window isn't actually closed__, so you are expected to monitor
this flag and either destroy the window or give some kind of feedback to the
user.
@code
while (!glfwWindowShouldClose(window))
{
// Keep running
}
@endcode
You can be notified when the user is attempting to close the window by setting
a close callback with @ref glfwSetWindowCloseCallback. The callback will be
called immediately after the close flag has been set.
You can also set it yourself with @ref glfwSetWindowShouldClose. This can be
useful if you want to interpret other kinds of input as closing the window, like
for example pressing the _Escape_ key.
@subsection quick_key_input Receiving input events
Each window has a large number of callbacks that can be set to receive all the
various kinds of events. To receive key press and release events, create a key
callback function.
@code
static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
glfwSetWindowShouldClose(window, GLFW_TRUE);
}
@endcode
The key callback, like other window related callbacks, are set per-window.
@code
glfwSetKeyCallback(window, key_callback);
@endcode
In order for event callbacks to be called when events occur, you need to process
events as described below.
@subsection quick_render Rendering with OpenGL
Once you have a current OpenGL context, you can use OpenGL normally. In this
tutorial, a multi-colored rotating triangle will be rendered. The framebuffer
size needs to be retrieved for `glViewport`.
@code
int width, height;
glfwGetFramebufferSize(window, &width, &height);
glViewport(0, 0, width, height);
@endcode
You can also set a framebuffer size callback using @ref
glfwSetFramebufferSizeCallback and be notified when the size changes.
Actual rendering with OpenGL is outside the scope of this tutorial, but there
are [many](https://open.gl/) [excellent](https://learnopengl.com/)
[tutorial](http://openglbook.com/) [sites](http://ogldev.atspace.co.uk/) that
teach modern OpenGL. Some of them use GLFW to create the context and window
while others use GLUT or SDL, but remember that OpenGL itself always works the
same.
@subsection quick_timer Reading the timer
To create smooth animation, a time source is needed. GLFW provides a timer that
returns the number of seconds since initialization. The time source used is the
most accurate on each platform and generally has micro- or nanosecond
resolution.
@code
double time = glfwGetTime();
@endcode
@subsection quick_swap_buffers Swapping buffers
GLFW windows by default use double buffering. That means that each window has
two rendering buffers; a front buffer and a back buffer. The front buffer is
the one being displayed and the back buffer the one you render to.
When the entire frame has been rendered, the buffers need to be swapped with one
another, so the back buffer becomes the front buffer and vice versa.
@code
glfwSwapBuffers(window);
@endcode
The swap interval indicates how many frames to wait until swapping the buffers,
commonly known as _vsync_. By default, the swap interval is zero, meaning
buffer swapping will occur immediately. On fast machines, many of those frames
will never be seen, as the screen is still only updated typically 60-75 times
per second, so this wastes a lot of CPU and GPU cycles.
Also, because the buffers will be swapped in the middle the screen update,
leading to [screen tearing](https://en.wikipedia.org/wiki/Screen_tearing).
For these reasons, applications will typically want to set the swap interval to
one. It can be set to higher values, but this is usually not recommended,
because of the input latency it leads to.
@code
glfwSwapInterval(1);
@endcode
This function acts on the current context and will fail unless a context is
current.
@subsection quick_process_events Processing events
GLFW needs to communicate regularly with the window system both in order to
receive events and to show that the application hasn't locked up. Event
processing must be done regularly while you have visible windows and is normally
done each frame after buffer swapping.
There are two methods for processing pending events; polling and waiting. This
example will use event polling, which processes only those events that have
already been received and then returns immediately.
@code
glfwPollEvents();
@endcode
This is the best choice when rendering continually, like most games do. If
instead you only need to update your rendering once you have received new input,
@ref glfwWaitEvents is a better choice. It waits until at least one event has
been received, putting the thread to sleep in the meantime, and then processes
all received events. This saves a great deal of CPU cycles and is useful for,
for example, many kinds of editing tools.
@section quick_example Putting it together
Now that you know how to initialize GLFW, create a window and poll for
keyboard input, it's possible to create a simple program.
This program creates a 640 by 480 windowed mode window and starts a loop that
clears the screen, renders a triangle and processes events until the user either
presses _Escape_ or closes the window.
@snippet simple.c code
The program above can be found in the
[source package](https://www.glfw.org/download.html) as `examples/simple.c`
and is compiled along with all other examples when you build GLFW. If you
built GLFW from the source package then already have this as `simple.exe` on
Windows, `simple` on Linux or `simple.app` on macOS.
This tutorial used only a few of the many functions GLFW provides. There are
guides for each of the areas covered by GLFW. Each guide will introduce all the
functions for that category.
- @ref intro_guide
- @ref window_guide
- @ref context_guide
- @ref monitor_guide
- @ref input_guide
You can access reference documentation for any GLFW function by clicking it and
the reference for each function links to related functions and guide sections.
The tutorial ends here. Once you have written a program that uses GLFW, you
will need to compile and link it. How to do that depends on the development
environment you are using and is best explained by the documentation for that
environment. To learn about the details that are specific to GLFW, see
@ref build_guide.
*/

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/*!
@page vulkan_guide Vulkan guide
@tableofcontents
This guide is intended to fill the gaps between the [Vulkan
documentation](https://www.khronos.org/vulkan/) and the rest of the GLFW
documentation and is not a replacement for either. It assumes some familiarity
with Vulkan concepts like loaders, devices, queues and surfaces and leaves it to
the Vulkan documentation to explain the details of Vulkan functions.
To develop for Vulkan you should download the [LunarG Vulkan
SDK](https://vulkan.lunarg.com/) for your platform. Apart from headers and link
libraries, they also provide the validation layers necessary for development.
For details on a specific function in this category, see the @ref vulkan. There
are also guides for the other areas of the GLFW API.
- @ref intro_guide
- @ref window_guide
- @ref context_guide
- @ref monitor_guide
- @ref input_guide
@section vulkan_loader Linking against the Vulkan loader
By default, GLFW will look for the Vulkan loader on demand at runtime via its
standard name (`vulkan-1.dll` on Windows, `libvulkan.so.1` on Linux and other
Unix-like systems and `libvulkan.1.dylib` on macOS). This means that GLFW does
not need to be linked against the loader. However, it also means that if you
are using the static library form of the Vulkan loader GLFW will either fail to
find it or (worse) use the wrong one.
The @ref GLFW_VULKAN_STATIC CMake option makes GLFW call the Vulkan loader
directly instead of dynamically loading it at runtime. Not linking against the
Vulkan loader will then be a compile-time error.
@macos Because the Vulkan loader and ICD are not installed globally on macOS,
you need to set up the application bundle according to the LunarG SDK
documentation. This is explained in more detail in the
[SDK documentation for macOS](https://vulkan.lunarg.com/doc/sdk/latest/mac/getting_started.html).
@section vulkan_include Including the Vulkan and GLFW header files
To include the Vulkan header, define @ref GLFW_INCLUDE_VULKAN before including
the GLFW header.
@code
#define GLFW_INCLUDE_VULKAN
#include <GLFW/glfw3.h>
@endcode
If you instead want to include the Vulkan header from a custom location or use
your own custom Vulkan header then do this before the GLFW header.
@code
#include <path/to/vulkan.h>
#include <GLFW/glfw3.h>
@endcode
Unless a Vulkan header is included, either by the GLFW header or above it, any
GLFW functions that take or return Vulkan types will not be declared.
The `VK_USE_PLATFORM_*_KHR` macros do not need to be defined for the Vulkan part
of GLFW to work. Define them only if you are using these extensions directly.
@section vulkan_support Querying for Vulkan support
If you are linking directly against the Vulkan loader then you can skip this
section. The canonical desktop loader library exports all Vulkan core and
Khronos extension functions, allowing them to be called directly.
If you are loading the Vulkan loader dynamically instead of linking directly
against it, you can check for the availability of a loader and ICD with @ref
glfwVulkanSupported.
@code
if (glfwVulkanSupported())
{
// Vulkan is available, at least for compute
}
@endcode
This function returns `GLFW_TRUE` if the Vulkan loader and any minimally
functional ICD was found.
If if one or both were not found, calling any other Vulkan related GLFW function
will generate a @ref GLFW_API_UNAVAILABLE error.
@subsection vulkan_proc Querying Vulkan function pointers
To load any Vulkan core or extension function from the found loader, call @ref
glfwGetInstanceProcAddress. To load functions needed for instance creation,
pass `NULL` as the instance.
@code
PFN_vkCreateInstance pfnCreateInstance = (PFN_vkCreateInstance)
glfwGetInstanceProcAddress(NULL, "vkCreateInstance");
@endcode
Once you have created an instance, you can load from it all other Vulkan core
functions and functions from any instance extensions you enabled.
@code
PFN_vkCreateDevice pfnCreateDevice = (PFN_vkCreateDevice)
glfwGetInstanceProcAddress(instance, "vkCreateDevice");
@endcode
This function in turn calls `vkGetInstanceProcAddr`. If that fails, the
function falls back to a platform-specific query of the Vulkan loader (i.e.
`dlsym` or `GetProcAddress`). If that also fails, the function returns `NULL`.
For more information about `vkGetInstanceProcAddr`, see the Vulkan
documentation.
Vulkan also provides `vkGetDeviceProcAddr` for loading device-specific versions
of Vulkan function. This function can be retrieved from an instance with @ref
glfwGetInstanceProcAddress.
@code
PFN_vkGetDeviceProcAddr pfnGetDeviceProcAddr = (PFN_vkGetDeviceProcAddr)
glfwGetInstanceProcAddress(instance, "vkGetDeviceProcAddr");
@endcode
Device-specific functions may execute a little bit faster, due to not having to
dispatch internally based on the device passed to them. For more information
about `vkGetDeviceProcAddr`, see the Vulkan documentation.
@section vulkan_ext Querying required Vulkan extensions
To do anything useful with Vulkan you need to create an instance. If you want
to use Vulkan to render to a window, you must enable the instance extensions
GLFW requires to create Vulkan surfaces.
To query the instance extensions required, call @ref
glfwGetRequiredInstanceExtensions.
@code
uint32_t count;
const char** extensions = glfwGetRequiredInstanceExtensions(&count);
@endcode
These extensions must all be enabled when creating instances that are going to
be passed to @ref glfwGetPhysicalDevicePresentationSupport and @ref
glfwCreateWindowSurface. The set of extensions will vary depending on platform
and may also vary depending on graphics drivers and other factors.
If it fails it will return `NULL` and GLFW will not be able to create Vulkan
window surfaces. You can still use Vulkan for off-screen rendering and compute
work.
If successful the returned array will always include `VK_KHR_surface`, so if
you don't require any additional extensions you can pass this list directly to
the `VkInstanceCreateInfo` struct.
@code
VkInstanceCreateInfo ici;
memset(&ici, 0, sizeof(ici));
ici.enabledExtensionCount = count;
ici.ppEnabledExtensionNames = extensions;
...
@endcode
Additional extensions may be required by future versions of GLFW. You should
check whether any extensions you wish to enable are already in the returned
array, as it is an error to specify an extension more than once in the
`VkInstanceCreateInfo` struct.
@section vulkan_present Querying for Vulkan presentation support
Not every queue family of every Vulkan device can present images to surfaces.
To check whether a specific queue family of a physical device supports image
presentation without first having to create a window and surface, call @ref
glfwGetPhysicalDevicePresentationSupport.
@code
if (glfwGetPhysicalDevicePresentationSupport(instance, physical_device, queue_family_index))
{
// Queue family supports image presentation
}
@endcode
The `VK_KHR_surface` extension additionally provides the
`vkGetPhysicalDeviceSurfaceSupportKHR` function, which performs the same test on
an existing Vulkan surface.
@section vulkan_window Creating the window
Unless you will be using OpenGL or OpenGL ES with the same window as Vulkan,
there is no need to create a context. You can disable context creation with the
[GLFW_CLIENT_API](@ref GLFW_CLIENT_API_hint) hint.
@code
glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
GLFWwindow* window = glfwCreateWindow(640, 480, "Window Title", NULL, NULL);
@endcode
See @ref context_less for more information.
@section vulkan_surface Creating a Vulkan window surface
You can create a Vulkan surface (as defined by the `VK_KHR_surface` extension)
for a GLFW window with @ref glfwCreateWindowSurface.
@code
VkSurfaceKHR surface;
VkResult err = glfwCreateWindowSurface(instance, window, NULL, &surface);
if (err)
{
// Window surface creation failed
}
@endcode
If an OpenGL or OpenGL ES context was created on the window, the context has
ownership of the presentation on the window and a Vulkan surface cannot be
created.
It is your responsibility to destroy the surface. GLFW does not destroy it for
you. Call `vkDestroySurfaceKHR` function from the same extension to destroy it.
*/

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link_libraries(glfw)
include_directories(${glfw_INCLUDE_DIRS} "${GLFW_SOURCE_DIR}/deps")
if (MATH_LIBRARY)
link_libraries("${MATH_LIBRARY}")
endif()
if (MSVC)
add_definitions(-D_CRT_SECURE_NO_WARNINGS)
endif()
if (GLFW_USE_OSMESA)
add_definitions(-DUSE_NATIVE_OSMESA)
endif()
if (WIN32)
set(ICON glfw.rc)
elseif (APPLE)
set(ICON glfw.icns)
set_source_files_properties(glfw.icns PROPERTIES
MACOSX_PACKAGE_LOCATION "Resources")
endif()
set(GLAD_GL "${GLFW_SOURCE_DIR}/deps/glad/gl.h"
"${GLFW_SOURCE_DIR}/deps/glad_gl.c")
set(GETOPT "${GLFW_SOURCE_DIR}/deps/getopt.h"
"${GLFW_SOURCE_DIR}/deps/getopt.c")
set(TINYCTHREAD "${GLFW_SOURCE_DIR}/deps/tinycthread.h"
"${GLFW_SOURCE_DIR}/deps/tinycthread.c")
add_executable(boing WIN32 MACOSX_BUNDLE boing.c ${ICON} ${GLAD_GL})
add_executable(gears WIN32 MACOSX_BUNDLE gears.c ${ICON} ${GLAD_GL})
add_executable(heightmap WIN32 MACOSX_BUNDLE heightmap.c ${ICON} ${GLAD_GL})
add_executable(offscreen offscreen.c ${ICON} ${GLAD_GL})
add_executable(particles WIN32 MACOSX_BUNDLE particles.c ${ICON} ${TINYCTHREAD} ${GETOPT} ${GLAD_GL})
add_executable(sharing WIN32 MACOSX_BUNDLE sharing.c ${ICON} ${GLAD_GL})
add_executable(simple WIN32 MACOSX_BUNDLE simple.c ${ICON} ${GLAD_GL})
add_executable(splitview WIN32 MACOSX_BUNDLE splitview.c ${ICON} ${GLAD_GL})
add_executable(wave WIN32 MACOSX_BUNDLE wave.c ${ICON} ${GLAD_GL})
target_link_libraries(particles "${CMAKE_THREAD_LIBS_INIT}")
if (RT_LIBRARY)
target_link_libraries(particles "${RT_LIBRARY}")
endif()
set(WINDOWS_BINARIES boing gears heightmap particles sharing simple splitview wave)
set(CONSOLE_BINARIES offscreen)
set_target_properties(${WINDOWS_BINARIES} ${CONSOLE_BINARIES} PROPERTIES
FOLDER "GLFW3/Examples")
if (MSVC)
# Tell MSVC to use main instead of WinMain for Windows subsystem executables
set_target_properties(${WINDOWS_BINARIES} PROPERTIES
LINK_FLAGS "/ENTRY:mainCRTStartup")
endif()
if (APPLE)
set_target_properties(boing PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Boing")
set_target_properties(gears PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Gears")
set_target_properties(heightmap PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Heightmap")
set_target_properties(particles PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Particles")
set_target_properties(sharing PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Sharing")
set_target_properties(simple PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Simple")
set_target_properties(splitview PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "SplitView")
set_target_properties(wave PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Wave")
set_target_properties(${WINDOWS_BINARIES} PROPERTIES
RESOURCE glfw.icns
MACOSX_BUNDLE_SHORT_VERSION_STRING ${GLFW_VERSION}
MACOSX_BUNDLE_LONG_VERSION_STRING ${GLFW_VERSION_FULL}
MACOSX_BUNDLE_ICON_FILE glfw.icns
MACOSX_BUNDLE_INFO_PLIST "${GLFW_SOURCE_DIR}/CMake/MacOSXBundleInfo.plist.in")
endif()

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/*****************************************************************************
* Title: GLBoing
* Desc: Tribute to Amiga Boing.
* Author: Jim Brooks <gfx@jimbrooks.org>
* Original Amiga authors were R.J. Mical and Dale Luck.
* GLFW conversion by Marcus Geelnard
* Notes: - 360' = 2*PI [radian]
*
* - Distances between objects are created by doing a relative
* Z translations.
*
* - Although OpenGL enticingly supports alpha-blending,
* the shadow of the original Boing didn't affect the color
* of the grid.
*
* - [Marcus] Changed timing scheme from interval driven to frame-
* time based animation steps (which results in much smoother
* movement)
*
* History of Amiga Boing:
*
* Boing was demonstrated on the prototype Amiga (codenamed "Lorraine") in
* 1985. According to legend, it was written ad-hoc in one night by
* R. J. Mical and Dale Luck. Because the bouncing ball animation was so fast
* and smooth, attendees did not believe the Amiga prototype was really doing
* the rendering. Suspecting a trick, they began looking around the booth for
* a hidden computer or VCR.
*****************************************************************************/
#if defined(_MSC_VER)
// Make MS math.h define M_PI
#define _USE_MATH_DEFINES
#endif
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <glad/gl.h>
#include <GLFW/glfw3.h>
#include <linmath.h>
/*****************************************************************************
* Various declarations and macros
*****************************************************************************/
/* Prototypes */
void init( void );
void display( void );
void reshape( GLFWwindow* window, int w, int h );
void key_callback( GLFWwindow* window, int key, int scancode, int action, int mods );
void mouse_button_callback( GLFWwindow* window, int button, int action, int mods );
void cursor_position_callback( GLFWwindow* window, double x, double y );
void DrawBoingBall( void );
void BounceBall( double dt );
void DrawBoingBallBand( GLfloat long_lo, GLfloat long_hi );
void DrawGrid( void );
#define RADIUS 70.f
#define STEP_LONGITUDE 22.5f /* 22.5 makes 8 bands like original Boing */
#define STEP_LATITUDE 22.5f
#define DIST_BALL (RADIUS * 2.f + RADIUS * 0.1f)
#define VIEW_SCENE_DIST (DIST_BALL * 3.f + 200.f)/* distance from viewer to middle of boing area */
#define GRID_SIZE (RADIUS * 4.5f) /* length (width) of grid */
#define BOUNCE_HEIGHT (RADIUS * 2.1f)
#define BOUNCE_WIDTH (RADIUS * 2.1f)
#define SHADOW_OFFSET_X -20.f
#define SHADOW_OFFSET_Y 10.f
#define SHADOW_OFFSET_Z 0.f
#define WALL_L_OFFSET 0.f
#define WALL_R_OFFSET 5.f
/* Animation speed (50.0 mimics the original GLUT demo speed) */
#define ANIMATION_SPEED 50.f
/* Maximum allowed delta time per physics iteration */
#define MAX_DELTA_T 0.02f
/* Draw ball, or its shadow */
typedef enum { DRAW_BALL, DRAW_BALL_SHADOW } DRAW_BALL_ENUM;
/* Vertex type */
typedef struct {float x; float y; float z;} vertex_t;
/* Global vars */
int windowed_xpos, windowed_ypos, windowed_width, windowed_height;
int width, height;
GLfloat deg_rot_y = 0.f;
GLfloat deg_rot_y_inc = 2.f;
int override_pos = GLFW_FALSE;
GLfloat cursor_x = 0.f;
GLfloat cursor_y = 0.f;
GLfloat ball_x = -RADIUS;
GLfloat ball_y = -RADIUS;
GLfloat ball_x_inc = 1.f;
GLfloat ball_y_inc = 2.f;
DRAW_BALL_ENUM drawBallHow;
double t;
double t_old = 0.f;
double dt;
/* Random number generator */
#ifndef RAND_MAX
#define RAND_MAX 4095
#endif
/*****************************************************************************
* Truncate a degree.
*****************************************************************************/
GLfloat TruncateDeg( GLfloat deg )
{
if ( deg >= 360.f )
return (deg - 360.f);
else
return deg;
}
/*****************************************************************************
* Convert a degree (360-based) into a radian.
* 360' = 2 * PI
*****************************************************************************/
double deg2rad( double deg )
{
return deg / 360 * (2 * M_PI);
}
/*****************************************************************************
* 360' sin().
*****************************************************************************/
double sin_deg( double deg )
{
return sin( deg2rad( deg ) );
}
/*****************************************************************************
* 360' cos().
*****************************************************************************/
double cos_deg( double deg )
{
return cos( deg2rad( deg ) );
}
/*****************************************************************************
* Compute a cross product (for a normal vector).
*
* c = a x b
*****************************************************************************/
void CrossProduct( vertex_t a, vertex_t b, vertex_t c, vertex_t *n )
{
GLfloat u1, u2, u3;
GLfloat v1, v2, v3;
u1 = b.x - a.x;
u2 = b.y - a.y;
u3 = b.y - a.z;
v1 = c.x - a.x;
v2 = c.y - a.y;
v3 = c.z - a.z;
n->x = u2 * v3 - v2 * u3;
n->y = u3 * v1 - v3 * u1;
n->z = u1 * v2 - v1 * u2;
}
#define BOING_DEBUG 0
/*****************************************************************************
* init()
*****************************************************************************/
void init( void )
{
/*
* Clear background.
*/
glClearColor( 0.55f, 0.55f, 0.55f, 0.f );
glShadeModel( GL_FLAT );
}
/*****************************************************************************
* display()
*****************************************************************************/
void display(void)
{
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
glPushMatrix();
drawBallHow = DRAW_BALL_SHADOW;
DrawBoingBall();
DrawGrid();
drawBallHow = DRAW_BALL;
DrawBoingBall();
glPopMatrix();
glFlush();
}
/*****************************************************************************
* reshape()
*****************************************************************************/
void reshape( GLFWwindow* window, int w, int h )
{
mat4x4 projection, view;
glViewport( 0, 0, (GLsizei)w, (GLsizei)h );
glMatrixMode( GL_PROJECTION );
mat4x4_perspective( projection,
2.f * (float) atan2( RADIUS, 200.f ),
(float)w / (float)h,
1.f, VIEW_SCENE_DIST );
glLoadMatrixf((const GLfloat*) projection);
glMatrixMode( GL_MODELVIEW );
{
vec3 eye = { 0.f, 0.f, VIEW_SCENE_DIST };
vec3 center = { 0.f, 0.f, 0.f };
vec3 up = { 0.f, -1.f, 0.f };
mat4x4_look_at( view, eye, center, up );
}
glLoadMatrixf((const GLfloat*) view);
}
void key_callback( GLFWwindow* window, int key, int scancode, int action, int mods )
{
if (action != GLFW_PRESS)
return;
if (key == GLFW_KEY_ESCAPE && mods == 0)
glfwSetWindowShouldClose(window, GLFW_TRUE);
if ((key == GLFW_KEY_ENTER && mods == GLFW_MOD_ALT) ||
(key == GLFW_KEY_F11 && mods == GLFW_MOD_ALT))
{
if (glfwGetWindowMonitor(window))
{
glfwSetWindowMonitor(window, NULL,
windowed_xpos, windowed_ypos,
windowed_width, windowed_height, 0);
}
else
{
GLFWmonitor* monitor = glfwGetPrimaryMonitor();
if (monitor)
{
const GLFWvidmode* mode = glfwGetVideoMode(monitor);
glfwGetWindowPos(window, &windowed_xpos, &windowed_ypos);
glfwGetWindowSize(window, &windowed_width, &windowed_height);
glfwSetWindowMonitor(window, monitor, 0, 0, mode->width, mode->height, mode->refreshRate);
}
}
}
}
static void set_ball_pos ( GLfloat x, GLfloat y )
{
ball_x = (width / 2) - x;
ball_y = y - (height / 2);
}
void mouse_button_callback( GLFWwindow* window, int button, int action, int mods )
{
if (button != GLFW_MOUSE_BUTTON_LEFT)
return;
if (action == GLFW_PRESS)
{
override_pos = GLFW_TRUE;
set_ball_pos(cursor_x, cursor_y);
}
else
{
override_pos = GLFW_FALSE;
}
}
void cursor_position_callback( GLFWwindow* window, double x, double y )
{
cursor_x = (float) x;
cursor_y = (float) y;
if ( override_pos )
set_ball_pos(cursor_x, cursor_y);
}
/*****************************************************************************
* Draw the Boing ball.
*
* The Boing ball is sphere in which each facet is a rectangle.
* Facet colors alternate between red and white.
* The ball is built by stacking latitudinal circles. Each circle is composed
* of a widely-separated set of points, so that each facet is noticeably large.
*****************************************************************************/
void DrawBoingBall( void )
{
GLfloat lon_deg; /* degree of longitude */
double dt_total, dt2;
glPushMatrix();
glMatrixMode( GL_MODELVIEW );
/*
* Another relative Z translation to separate objects.
*/
glTranslatef( 0.0, 0.0, DIST_BALL );
/* Update ball position and rotation (iterate if necessary) */
dt_total = dt;
while( dt_total > 0.0 )
{
dt2 = dt_total > MAX_DELTA_T ? MAX_DELTA_T : dt_total;
dt_total -= dt2;
BounceBall( dt2 );
deg_rot_y = TruncateDeg( deg_rot_y + deg_rot_y_inc*((float)dt2*ANIMATION_SPEED) );
}
/* Set ball position */
glTranslatef( ball_x, ball_y, 0.0 );
/*
* Offset the shadow.
*/
if ( drawBallHow == DRAW_BALL_SHADOW )
{
glTranslatef( SHADOW_OFFSET_X,
SHADOW_OFFSET_Y,
SHADOW_OFFSET_Z );
}
/*
* Tilt the ball.
*/
glRotatef( -20.0, 0.0, 0.0, 1.0 );
/*
* Continually rotate ball around Y axis.
*/
glRotatef( deg_rot_y, 0.0, 1.0, 0.0 );
/*
* Set OpenGL state for Boing ball.
*/
glCullFace( GL_FRONT );
glEnable( GL_CULL_FACE );
glEnable( GL_NORMALIZE );
/*
* Build a faceted latitude slice of the Boing ball,
* stepping same-sized vertical bands of the sphere.
*/
for ( lon_deg = 0;
lon_deg < 180;
lon_deg += STEP_LONGITUDE )
{
/*
* Draw a latitude circle at this longitude.
*/
DrawBoingBallBand( lon_deg,
lon_deg + STEP_LONGITUDE );
}
glPopMatrix();
return;
}
/*****************************************************************************
* Bounce the ball.
*****************************************************************************/
void BounceBall( double delta_t )
{
GLfloat sign;
GLfloat deg;
if ( override_pos )
return;
/* Bounce on walls */
if ( ball_x > (BOUNCE_WIDTH/2 + WALL_R_OFFSET ) )
{
ball_x_inc = -0.5f - 0.75f * (GLfloat)rand() / (GLfloat)RAND_MAX;
deg_rot_y_inc = -deg_rot_y_inc;
}
if ( ball_x < -(BOUNCE_HEIGHT/2 + WALL_L_OFFSET) )
{
ball_x_inc = 0.5f + 0.75f * (GLfloat)rand() / (GLfloat)RAND_MAX;
deg_rot_y_inc = -deg_rot_y_inc;
}
/* Bounce on floor / roof */
if ( ball_y > BOUNCE_HEIGHT/2 )
{
ball_y_inc = -0.75f - 1.f * (GLfloat)rand() / (GLfloat)RAND_MAX;
}
if ( ball_y < -BOUNCE_HEIGHT/2*0.85 )
{
ball_y_inc = 0.75f + 1.f * (GLfloat)rand() / (GLfloat)RAND_MAX;
}
/* Update ball position */
ball_x += ball_x_inc * ((float)delta_t*ANIMATION_SPEED);
ball_y += ball_y_inc * ((float)delta_t*ANIMATION_SPEED);
/*
* Simulate the effects of gravity on Y movement.
*/
if ( ball_y_inc < 0 ) sign = -1.0; else sign = 1.0;
deg = (ball_y + BOUNCE_HEIGHT/2) * 90 / BOUNCE_HEIGHT;
if ( deg > 80 ) deg = 80;
if ( deg < 10 ) deg = 10;
ball_y_inc = sign * 4.f * (float) sin_deg( deg );
}
/*****************************************************************************
* Draw a faceted latitude band of the Boing ball.
*
* Parms: long_lo, long_hi
* Low and high longitudes of slice, resp.
*****************************************************************************/
void DrawBoingBallBand( GLfloat long_lo,
GLfloat long_hi )
{
vertex_t vert_ne; /* "ne" means south-east, so on */
vertex_t vert_nw;
vertex_t vert_sw;
vertex_t vert_se;
vertex_t vert_norm;
GLfloat lat_deg;
static int colorToggle = 0;
/*
* Iterate through the points of a latitude circle.
* A latitude circle is a 2D set of X,Z points.
*/
for ( lat_deg = 0;
lat_deg <= (360 - STEP_LATITUDE);
lat_deg += STEP_LATITUDE )
{
/*
* Color this polygon with red or white.
*/
if ( colorToggle )
glColor3f( 0.8f, 0.1f, 0.1f );
else
glColor3f( 0.95f, 0.95f, 0.95f );
#if 0
if ( lat_deg >= 180 )
if ( colorToggle )
glColor3f( 0.1f, 0.8f, 0.1f );
else
glColor3f( 0.5f, 0.5f, 0.95f );
#endif
colorToggle = ! colorToggle;
/*
* Change color if drawing shadow.
*/
if ( drawBallHow == DRAW_BALL_SHADOW )
glColor3f( 0.35f, 0.35f, 0.35f );
/*
* Assign each Y.
*/
vert_ne.y = vert_nw.y = (float) cos_deg(long_hi) * RADIUS;
vert_sw.y = vert_se.y = (float) cos_deg(long_lo) * RADIUS;
/*
* Assign each X,Z with sin,cos values scaled by latitude radius indexed by longitude.
* Eg, long=0 and long=180 are at the poles, so zero scale is sin(longitude),
* while long=90 (sin(90)=1) is at equator.
*/
vert_ne.x = (float) cos_deg( lat_deg ) * (RADIUS * (float) sin_deg( long_lo + STEP_LONGITUDE ));
vert_se.x = (float) cos_deg( lat_deg ) * (RADIUS * (float) sin_deg( long_lo ));
vert_nw.x = (float) cos_deg( lat_deg + STEP_LATITUDE ) * (RADIUS * (float) sin_deg( long_lo + STEP_LONGITUDE ));
vert_sw.x = (float) cos_deg( lat_deg + STEP_LATITUDE ) * (RADIUS * (float) sin_deg( long_lo ));
vert_ne.z = (float) sin_deg( lat_deg ) * (RADIUS * (float) sin_deg( long_lo + STEP_LONGITUDE ));
vert_se.z = (float) sin_deg( lat_deg ) * (RADIUS * (float) sin_deg( long_lo ));
vert_nw.z = (float) sin_deg( lat_deg + STEP_LATITUDE ) * (RADIUS * (float) sin_deg( long_lo + STEP_LONGITUDE ));
vert_sw.z = (float) sin_deg( lat_deg + STEP_LATITUDE ) * (RADIUS * (float) sin_deg( long_lo ));
/*
* Draw the facet.
*/
glBegin( GL_POLYGON );
CrossProduct( vert_ne, vert_nw, vert_sw, &vert_norm );
glNormal3f( vert_norm.x, vert_norm.y, vert_norm.z );
glVertex3f( vert_ne.x, vert_ne.y, vert_ne.z );
glVertex3f( vert_nw.x, vert_nw.y, vert_nw.z );
glVertex3f( vert_sw.x, vert_sw.y, vert_sw.z );
glVertex3f( vert_se.x, vert_se.y, vert_se.z );
glEnd();
#if BOING_DEBUG
printf( "----------------------------------------------------------- \n" );
printf( "lat = %f long_lo = %f long_hi = %f \n", lat_deg, long_lo, long_hi );
printf( "vert_ne x = %.8f y = %.8f z = %.8f \n", vert_ne.x, vert_ne.y, vert_ne.z );
printf( "vert_nw x = %.8f y = %.8f z = %.8f \n", vert_nw.x, vert_nw.y, vert_nw.z );
printf( "vert_se x = %.8f y = %.8f z = %.8f \n", vert_se.x, vert_se.y, vert_se.z );
printf( "vert_sw x = %.8f y = %.8f z = %.8f \n", vert_sw.x, vert_sw.y, vert_sw.z );
#endif
}
/*
* Toggle color so that next band will opposite red/white colors than this one.
*/
colorToggle = ! colorToggle;
/*
* This circular band is done.
*/
return;
}
/*****************************************************************************
* Draw the purple grid of lines, behind the Boing ball.
* When the Workbench is dropped to the bottom, Boing shows 12 rows.
*****************************************************************************/
void DrawGrid( void )
{
int row, col;
const int rowTotal = 12; /* must be divisible by 2 */
const int colTotal = rowTotal; /* must be same as rowTotal */
const GLfloat widthLine = 2.0; /* should be divisible by 2 */
const GLfloat sizeCell = GRID_SIZE / rowTotal;
const GLfloat z_offset = -40.0;
GLfloat xl, xr;
GLfloat yt, yb;
glPushMatrix();
glDisable( GL_CULL_FACE );
/*
* Another relative Z translation to separate objects.
*/
glTranslatef( 0.0, 0.0, DIST_BALL );
/*
* Draw vertical lines (as skinny 3D rectangles).
*/
for ( col = 0; col <= colTotal; col++ )
{
/*
* Compute co-ords of line.
*/
xl = -GRID_SIZE / 2 + col * sizeCell;
xr = xl + widthLine;
yt = GRID_SIZE / 2;
yb = -GRID_SIZE / 2 - widthLine;
glBegin( GL_POLYGON );
glColor3f( 0.6f, 0.1f, 0.6f ); /* purple */
glVertex3f( xr, yt, z_offset ); /* NE */
glVertex3f( xl, yt, z_offset ); /* NW */
glVertex3f( xl, yb, z_offset ); /* SW */
glVertex3f( xr, yb, z_offset ); /* SE */
glEnd();
}
/*
* Draw horizontal lines (as skinny 3D rectangles).
*/
for ( row = 0; row <= rowTotal; row++ )
{
/*
* Compute co-ords of line.
*/
yt = GRID_SIZE / 2 - row * sizeCell;
yb = yt - widthLine;
xl = -GRID_SIZE / 2;
xr = GRID_SIZE / 2 + widthLine;
glBegin( GL_POLYGON );
glColor3f( 0.6f, 0.1f, 0.6f ); /* purple */
glVertex3f( xr, yt, z_offset ); /* NE */
glVertex3f( xl, yt, z_offset ); /* NW */
glVertex3f( xl, yb, z_offset ); /* SW */
glVertex3f( xr, yb, z_offset ); /* SE */
glEnd();
}
glPopMatrix();
return;
}
/*======================================================================*
* main()
*======================================================================*/
int main( void )
{
GLFWwindow* window;
/* Init GLFW */
if( !glfwInit() )
exit( EXIT_FAILURE );
window = glfwCreateWindow( 400, 400, "Boing (classic Amiga demo)", NULL, NULL );
if (!window)
{
glfwTerminate();
exit( EXIT_FAILURE );
}
glfwSetWindowAspectRatio(window, 1, 1);
glfwSetFramebufferSizeCallback(window, reshape);
glfwSetKeyCallback(window, key_callback);
glfwSetMouseButtonCallback(window, mouse_button_callback);
glfwSetCursorPosCallback(window, cursor_position_callback);
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
glfwSwapInterval( 1 );
glfwGetFramebufferSize(window, &width, &height);
reshape(window, width, height);
glfwSetTime( 0.0 );
init();
/* Main loop */
for (;;)
{
/* Timing */
t = glfwGetTime();
dt = t - t_old;
t_old = t;
/* Draw one frame */
display();
/* Swap buffers */
glfwSwapBuffers(window);
glfwPollEvents();
/* Check if we are still running */
if (glfwWindowShouldClose(window))
break;
}
glfwTerminate();
exit( EXIT_SUCCESS );
}

359
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/*
* 3-D gear wheels. This program is in the public domain.
*
* Command line options:
* -info print GL implementation information
* -exit automatically exit after 30 seconds
*
*
* Brian Paul
*
*
* Marcus Geelnard:
* - Conversion to GLFW
* - Time based rendering (frame rate independent)
* - Slightly modified camera that should work better for stereo viewing
*
*
* Camilla Löwy:
* - Removed FPS counter (this is not a benchmark)
* - Added a few comments
* - Enabled vsync
*/
#if defined(_MSC_VER)
// Make MS math.h define M_PI
#define _USE_MATH_DEFINES
#endif
#include <math.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <glad/gl.h>
#include <GLFW/glfw3.h>
/**
Draw a gear wheel. You'll probably want to call this function when
building a display list since we do a lot of trig here.
Input: inner_radius - radius of hole at center
outer_radius - radius at center of teeth
width - width of gear teeth - number of teeth
tooth_depth - depth of tooth
**/
static void
gear(GLfloat inner_radius, GLfloat outer_radius, GLfloat width,
GLint teeth, GLfloat tooth_depth)
{
GLint i;
GLfloat r0, r1, r2;
GLfloat angle, da;
GLfloat u, v, len;
r0 = inner_radius;
r1 = outer_radius - tooth_depth / 2.f;
r2 = outer_radius + tooth_depth / 2.f;
da = 2.f * (float) M_PI / teeth / 4.f;
glShadeModel(GL_FLAT);
glNormal3f(0.f, 0.f, 1.f);
/* draw front face */
glBegin(GL_QUAD_STRIP);
for (i = 0; i <= teeth; i++) {
angle = i * 2.f * (float) M_PI / teeth;
glVertex3f(r0 * (float) cos(angle), r0 * (float) sin(angle), width * 0.5f);
glVertex3f(r1 * (float) cos(angle), r1 * (float) sin(angle), width * 0.5f);
if (i < teeth) {
glVertex3f(r0 * (float) cos(angle), r0 * (float) sin(angle), width * 0.5f);
glVertex3f(r1 * (float) cos(angle + 3 * da), r1 * (float) sin(angle + 3 * da), width * 0.5f);
}
}
glEnd();
/* draw front sides of teeth */
glBegin(GL_QUADS);
da = 2.f * (float) M_PI / teeth / 4.f;
for (i = 0; i < teeth; i++) {
angle = i * 2.f * (float) M_PI / teeth;
glVertex3f(r1 * (float) cos(angle), r1 * (float) sin(angle), width * 0.5f);
glVertex3f(r2 * (float) cos(angle + da), r2 * (float) sin(angle + da), width * 0.5f);
glVertex3f(r2 * (float) cos(angle + 2 * da), r2 * (float) sin(angle + 2 * da), width * 0.5f);
glVertex3f(r1 * (float) cos(angle + 3 * da), r1 * (float) sin(angle + 3 * da), width * 0.5f);
}
glEnd();
glNormal3f(0.0, 0.0, -1.0);
/* draw back face */
glBegin(GL_QUAD_STRIP);
for (i = 0; i <= teeth; i++) {
angle = i * 2.f * (float) M_PI / teeth;
glVertex3f(r1 * (float) cos(angle), r1 * (float) sin(angle), -width * 0.5f);
glVertex3f(r0 * (float) cos(angle), r0 * (float) sin(angle), -width * 0.5f);
if (i < teeth) {
glVertex3f(r1 * (float) cos(angle + 3 * da), r1 * (float) sin(angle + 3 * da), -width * 0.5f);
glVertex3f(r0 * (float) cos(angle), r0 * (float) sin(angle), -width * 0.5f);
}
}
glEnd();
/* draw back sides of teeth */
glBegin(GL_QUADS);
da = 2.f * (float) M_PI / teeth / 4.f;
for (i = 0; i < teeth; i++) {
angle = i * 2.f * (float) M_PI / teeth;
glVertex3f(r1 * (float) cos(angle + 3 * da), r1 * (float) sin(angle + 3 * da), -width * 0.5f);
glVertex3f(r2 * (float) cos(angle + 2 * da), r2 * (float) sin(angle + 2 * da), -width * 0.5f);
glVertex3f(r2 * (float) cos(angle + da), r2 * (float) sin(angle + da), -width * 0.5f);
glVertex3f(r1 * (float) cos(angle), r1 * (float) sin(angle), -width * 0.5f);
}
glEnd();
/* draw outward faces of teeth */
glBegin(GL_QUAD_STRIP);
for (i = 0; i < teeth; i++) {
angle = i * 2.f * (float) M_PI / teeth;
glVertex3f(r1 * (float) cos(angle), r1 * (float) sin(angle), width * 0.5f);
glVertex3f(r1 * (float) cos(angle), r1 * (float) sin(angle), -width * 0.5f);
u = r2 * (float) cos(angle + da) - r1 * (float) cos(angle);
v = r2 * (float) sin(angle + da) - r1 * (float) sin(angle);
len = (float) sqrt(u * u + v * v);
u /= len;
v /= len;
glNormal3f(v, -u, 0.0);
glVertex3f(r2 * (float) cos(angle + da), r2 * (float) sin(angle + da), width * 0.5f);
glVertex3f(r2 * (float) cos(angle + da), r2 * (float) sin(angle + da), -width * 0.5f);
glNormal3f((float) cos(angle), (float) sin(angle), 0.f);
glVertex3f(r2 * (float) cos(angle + 2 * da), r2 * (float) sin(angle + 2 * da), width * 0.5f);
glVertex3f(r2 * (float) cos(angle + 2 * da), r2 * (float) sin(angle + 2 * da), -width * 0.5f);
u = r1 * (float) cos(angle + 3 * da) - r2 * (float) cos(angle + 2 * da);
v = r1 * (float) sin(angle + 3 * da) - r2 * (float) sin(angle + 2 * da);
glNormal3f(v, -u, 0.f);
glVertex3f(r1 * (float) cos(angle + 3 * da), r1 * (float) sin(angle + 3 * da), width * 0.5f);
glVertex3f(r1 * (float) cos(angle + 3 * da), r1 * (float) sin(angle + 3 * da), -width * 0.5f);
glNormal3f((float) cos(angle), (float) sin(angle), 0.f);
}
glVertex3f(r1 * (float) cos(0), r1 * (float) sin(0), width * 0.5f);
glVertex3f(r1 * (float) cos(0), r1 * (float) sin(0), -width * 0.5f);
glEnd();
glShadeModel(GL_SMOOTH);
/* draw inside radius cylinder */
glBegin(GL_QUAD_STRIP);
for (i = 0; i <= teeth; i++) {
angle = i * 2.f * (float) M_PI / teeth;
glNormal3f(-(float) cos(angle), -(float) sin(angle), 0.f);
glVertex3f(r0 * (float) cos(angle), r0 * (float) sin(angle), -width * 0.5f);
glVertex3f(r0 * (float) cos(angle), r0 * (float) sin(angle), width * 0.5f);
}
glEnd();
}
static GLfloat view_rotx = 20.f, view_roty = 30.f, view_rotz = 0.f;
static GLint gear1, gear2, gear3;
static GLfloat angle = 0.f;
/* OpenGL draw function & timing */
static void draw(void)
{
glClearColor(0.0, 0.0, 0.0, 0.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glRotatef(view_rotx, 1.0, 0.0, 0.0);
glRotatef(view_roty, 0.0, 1.0, 0.0);
glRotatef(view_rotz, 0.0, 0.0, 1.0);
glPushMatrix();
glTranslatef(-3.0, -2.0, 0.0);
glRotatef(angle, 0.0, 0.0, 1.0);
glCallList(gear1);
glPopMatrix();
glPushMatrix();
glTranslatef(3.1f, -2.f, 0.f);
glRotatef(-2.f * angle - 9.f, 0.f, 0.f, 1.f);
glCallList(gear2);
glPopMatrix();
glPushMatrix();
glTranslatef(-3.1f, 4.2f, 0.f);
glRotatef(-2.f * angle - 25.f, 0.f, 0.f, 1.f);
glCallList(gear3);
glPopMatrix();
glPopMatrix();
}
/* update animation parameters */
static void animate(void)
{
angle = 100.f * (float) glfwGetTime();
}
/* change view angle, exit upon ESC */
void key( GLFWwindow* window, int k, int s, int action, int mods )
{
if( action != GLFW_PRESS ) return;
switch (k) {
case GLFW_KEY_Z:
if( mods & GLFW_MOD_SHIFT )
view_rotz -= 5.0;
else
view_rotz += 5.0;
break;
case GLFW_KEY_ESCAPE:
glfwSetWindowShouldClose(window, GLFW_TRUE);
break;
case GLFW_KEY_UP:
view_rotx += 5.0;
break;
case GLFW_KEY_DOWN:
view_rotx -= 5.0;
break;
case GLFW_KEY_LEFT:
view_roty += 5.0;
break;
case GLFW_KEY_RIGHT:
view_roty -= 5.0;
break;
default:
return;
}
}
/* new window size */
void reshape( GLFWwindow* window, int width, int height )
{
GLfloat h = (GLfloat) height / (GLfloat) width;
GLfloat xmax, znear, zfar;
znear = 5.0f;
zfar = 30.0f;
xmax = znear * 0.5f;
glViewport( 0, 0, (GLint) width, (GLint) height );
glMatrixMode( GL_PROJECTION );
glLoadIdentity();
glFrustum( -xmax, xmax, -xmax*h, xmax*h, znear, zfar );
glMatrixMode( GL_MODELVIEW );
glLoadIdentity();
glTranslatef( 0.0, 0.0, -20.0 );
}
/* program & OpenGL initialization */
static void init(void)
{
static GLfloat pos[4] = {5.f, 5.f, 10.f, 0.f};
static GLfloat red[4] = {0.8f, 0.1f, 0.f, 1.f};
static GLfloat green[4] = {0.f, 0.8f, 0.2f, 1.f};
static GLfloat blue[4] = {0.2f, 0.2f, 1.f, 1.f};
glLightfv(GL_LIGHT0, GL_POSITION, pos);
glEnable(GL_CULL_FACE);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_DEPTH_TEST);
/* make the gears */
gear1 = glGenLists(1);
glNewList(gear1, GL_COMPILE);
glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, red);
gear(1.f, 4.f, 1.f, 20, 0.7f);
glEndList();
gear2 = glGenLists(1);
glNewList(gear2, GL_COMPILE);
glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, green);
gear(0.5f, 2.f, 2.f, 10, 0.7f);
glEndList();
gear3 = glGenLists(1);
glNewList(gear3, GL_COMPILE);
glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, blue);
gear(1.3f, 2.f, 0.5f, 10, 0.7f);
glEndList();
glEnable(GL_NORMALIZE);
}
/* program entry */
int main(int argc, char *argv[])
{
GLFWwindow* window;
int width, height;
if( !glfwInit() )
{
fprintf( stderr, "Failed to initialize GLFW\n" );
exit( EXIT_FAILURE );
}
glfwWindowHint(GLFW_DEPTH_BITS, 16);
glfwWindowHint(GLFW_TRANSPARENT_FRAMEBUFFER, GLFW_TRUE);
window = glfwCreateWindow( 300, 300, "Gears", NULL, NULL );
if (!window)
{
fprintf( stderr, "Failed to open GLFW window\n" );
glfwTerminate();
exit( EXIT_FAILURE );
}
// Set callback functions
glfwSetFramebufferSizeCallback(window, reshape);
glfwSetKeyCallback(window, key);
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
glfwSwapInterval( 1 );
glfwGetFramebufferSize(window, &width, &height);
reshape(window, width, height);
// Parse command-line options
init();
// Main loop
while( !glfwWindowShouldClose(window) )
{
// Draw gears
draw();
// Update animation
animate();
// Swap buffers
glfwSwapBuffers(window);
glfwPollEvents();
}
// Terminate GLFW
glfwTerminate();
// Exit program
exit( EXIT_SUCCESS );
}

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//========================================================================
// Heightmap example program using OpenGL 3 core profile
// Copyright (c) 2010 Olivier Delannoy
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <assert.h>
#include <stddef.h>
#include <glad/gl.h>
#include <GLFW/glfw3.h>
/* Map height updates */
#define MAX_CIRCLE_SIZE (5.0f)
#define MAX_DISPLACEMENT (1.0f)
#define DISPLACEMENT_SIGN_LIMIT (0.3f)
#define MAX_ITER (200)
#define NUM_ITER_AT_A_TIME (1)
/* Map general information */
#define MAP_SIZE (10.0f)
#define MAP_NUM_VERTICES (80)
#define MAP_NUM_TOTAL_VERTICES (MAP_NUM_VERTICES*MAP_NUM_VERTICES)
#define MAP_NUM_LINES (3* (MAP_NUM_VERTICES - 1) * (MAP_NUM_VERTICES - 1) + \
2 * (MAP_NUM_VERTICES - 1))
/**********************************************************************
* Default shader programs
*********************************************************************/
static const char* vertex_shader_text =
"#version 150\n"
"uniform mat4 project;\n"
"uniform mat4 modelview;\n"
"in float x;\n"
"in float y;\n"
"in float z;\n"
"\n"
"void main()\n"
"{\n"
" gl_Position = project * modelview * vec4(x, y, z, 1.0);\n"
"}\n";
static const char* fragment_shader_text =
"#version 150\n"
"out vec4 color;\n"
"void main()\n"
"{\n"
" color = vec4(0.2, 1.0, 0.2, 1.0); \n"
"}\n";
/**********************************************************************
* Values for shader uniforms
*********************************************************************/
/* Frustum configuration */
static GLfloat view_angle = 45.0f;
static GLfloat aspect_ratio = 4.0f/3.0f;
static GLfloat z_near = 1.0f;
static GLfloat z_far = 100.f;
/* Projection matrix */
static GLfloat projection_matrix[16] = {
1.0f, 0.0f, 0.0f, 0.0f,
0.0f, 1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f
};
/* Model view matrix */
static GLfloat modelview_matrix[16] = {
1.0f, 0.0f, 0.0f, 0.0f,
0.0f, 1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f
};
/**********************************************************************
* Heightmap vertex and index data
*********************************************************************/
static GLfloat map_vertices[3][MAP_NUM_TOTAL_VERTICES];
static GLuint map_line_indices[2*MAP_NUM_LINES];
/* Store uniform location for the shaders
* Those values are setup as part of the process of creating
* the shader program. They should not be used before creating
* the program.
*/
static GLuint mesh;
static GLuint mesh_vbo[4];
/**********************************************************************
* OpenGL helper functions
*********************************************************************/
/* Creates a shader object of the specified type using the specified text
*/
static GLuint make_shader(GLenum type, const char* text)
{
GLuint shader;
GLint shader_ok;
GLsizei log_length;
char info_log[8192];
shader = glCreateShader(type);
if (shader != 0)
{
glShaderSource(shader, 1, (const GLchar**)&text, NULL);
glCompileShader(shader);
glGetShaderiv(shader, GL_COMPILE_STATUS, &shader_ok);
if (shader_ok != GL_TRUE)
{
fprintf(stderr, "ERROR: Failed to compile %s shader\n", (type == GL_FRAGMENT_SHADER) ? "fragment" : "vertex" );
glGetShaderInfoLog(shader, 8192, &log_length,info_log);
fprintf(stderr, "ERROR: \n%s\n\n", info_log);
glDeleteShader(shader);
shader = 0;
}
}
return shader;
}
/* Creates a program object using the specified vertex and fragment text
*/
static GLuint make_shader_program(const char* vs_text, const char* fs_text)
{
GLuint program = 0u;
GLint program_ok;
GLuint vertex_shader = 0u;
GLuint fragment_shader = 0u;
GLsizei log_length;
char info_log[8192];
vertex_shader = make_shader(GL_VERTEX_SHADER, vs_text);
if (vertex_shader != 0u)
{
fragment_shader = make_shader(GL_FRAGMENT_SHADER, fs_text);
if (fragment_shader != 0u)
{
/* make the program that connect the two shader and link it */
program = glCreateProgram();
if (program != 0u)
{
/* attach both shader and link */
glAttachShader(program, vertex_shader);
glAttachShader(program, fragment_shader);
glLinkProgram(program);
glGetProgramiv(program, GL_LINK_STATUS, &program_ok);
if (program_ok != GL_TRUE)
{
fprintf(stderr, "ERROR, failed to link shader program\n");
glGetProgramInfoLog(program, 8192, &log_length, info_log);
fprintf(stderr, "ERROR: \n%s\n\n", info_log);
glDeleteProgram(program);
glDeleteShader(fragment_shader);
glDeleteShader(vertex_shader);
program = 0u;
}
}
}
else
{
fprintf(stderr, "ERROR: Unable to load fragment shader\n");
glDeleteShader(vertex_shader);
}
}
else
{
fprintf(stderr, "ERROR: Unable to load vertex shader\n");
}
return program;
}
/**********************************************************************
* Geometry creation functions
*********************************************************************/
/* Generate vertices and indices for the heightmap
*/
static void init_map(void)
{
int i;
int j;
int k;
GLfloat step = MAP_SIZE / (MAP_NUM_VERTICES - 1);
GLfloat x = 0.0f;
GLfloat z = 0.0f;
/* Create a flat grid */
k = 0;
for (i = 0 ; i < MAP_NUM_VERTICES ; ++i)
{
for (j = 0 ; j < MAP_NUM_VERTICES ; ++j)
{
map_vertices[0][k] = x;
map_vertices[1][k] = 0.0f;
map_vertices[2][k] = z;
z += step;
++k;
}
x += step;
z = 0.0f;
}
#if DEBUG_ENABLED
for (i = 0 ; i < MAP_NUM_TOTAL_VERTICES ; ++i)
{
printf ("Vertice %d (%f, %f, %f)\n",
i, map_vertices[0][i], map_vertices[1][i], map_vertices[2][i]);
}
#endif
/* create indices */
/* line fan based on i
* i+1
* | / i + n + 1
* | /
* |/
* i --- i + n
*/
/* close the top of the square */
k = 0;
for (i = 0 ; i < MAP_NUM_VERTICES -1 ; ++i)
{
map_line_indices[k++] = (i + 1) * MAP_NUM_VERTICES -1;
map_line_indices[k++] = (i + 2) * MAP_NUM_VERTICES -1;
}
/* close the right of the square */
for (i = 0 ; i < MAP_NUM_VERTICES -1 ; ++i)
{
map_line_indices[k++] = (MAP_NUM_VERTICES - 1) * MAP_NUM_VERTICES + i;
map_line_indices[k++] = (MAP_NUM_VERTICES - 1) * MAP_NUM_VERTICES + i + 1;
}
for (i = 0 ; i < (MAP_NUM_VERTICES - 1) ; ++i)
{
for (j = 0 ; j < (MAP_NUM_VERTICES - 1) ; ++j)
{
int ref = i * (MAP_NUM_VERTICES) + j;
map_line_indices[k++] = ref;
map_line_indices[k++] = ref + 1;
map_line_indices[k++] = ref;
map_line_indices[k++] = ref + MAP_NUM_VERTICES;
map_line_indices[k++] = ref;
map_line_indices[k++] = ref + MAP_NUM_VERTICES + 1;
}
}
#ifdef DEBUG_ENABLED
for (k = 0 ; k < 2 * MAP_NUM_LINES ; k += 2)
{
int beg, end;
beg = map_line_indices[k];
end = map_line_indices[k+1];
printf ("Line %d: %d -> %d (%f, %f, %f) -> (%f, %f, %f)\n",
k / 2, beg, end,
map_vertices[0][beg], map_vertices[1][beg], map_vertices[2][beg],
map_vertices[0][end], map_vertices[1][end], map_vertices[2][end]);
}
#endif
}
static void generate_heightmap__circle(float* center_x, float* center_y,
float* size, float* displacement)
{
float sign;
/* random value for element in between [0-1.0] */
*center_x = (MAP_SIZE * rand()) / (1.0f * RAND_MAX);
*center_y = (MAP_SIZE * rand()) / (1.0f * RAND_MAX);
*size = (MAX_CIRCLE_SIZE * rand()) / (1.0f * RAND_MAX);
sign = (1.0f * rand()) / (1.0f * RAND_MAX);
sign = (sign < DISPLACEMENT_SIGN_LIMIT) ? -1.0f : 1.0f;
*displacement = (sign * (MAX_DISPLACEMENT * rand())) / (1.0f * RAND_MAX);
}
/* Run the specified number of iterations of the generation process for the
* heightmap
*/
static void update_map(int num_iter)
{
assert(num_iter > 0);
while(num_iter)
{
/* center of the circle */
float center_x;
float center_z;
float circle_size;
float disp;
size_t ii;
generate_heightmap__circle(&center_x, &center_z, &circle_size, &disp);
disp = disp / 2.0f;
for (ii = 0u ; ii < MAP_NUM_TOTAL_VERTICES ; ++ii)
{
GLfloat dx = center_x - map_vertices[0][ii];
GLfloat dz = center_z - map_vertices[2][ii];
GLfloat pd = (2.0f * (float) sqrt((dx * dx) + (dz * dz))) / circle_size;
if (fabs(pd) <= 1.0f)
{
/* tx,tz is within the circle */
GLfloat new_height = disp + (float) (cos(pd*3.14f)*disp);
map_vertices[1][ii] += new_height;
}
}
--num_iter;
}
}
/**********************************************************************
* OpenGL helper functions
*********************************************************************/
/* Create VBO, IBO and VAO objects for the heightmap geometry and bind them to
* the specified program object
*/
static void make_mesh(GLuint program)
{
GLuint attrloc;
glGenVertexArrays(1, &mesh);
glGenBuffers(4, mesh_vbo);
glBindVertexArray(mesh);
/* Prepare the data for drawing through a buffer inidices */
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mesh_vbo[3]);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(GLuint)* MAP_NUM_LINES * 2, map_line_indices, GL_STATIC_DRAW);
/* Prepare the attributes for rendering */
attrloc = glGetAttribLocation(program, "x");
glBindBuffer(GL_ARRAY_BUFFER, mesh_vbo[0]);
glBufferData(GL_ARRAY_BUFFER, sizeof(GLfloat) * MAP_NUM_TOTAL_VERTICES, &map_vertices[0][0], GL_STATIC_DRAW);
glEnableVertexAttribArray(attrloc);
glVertexAttribPointer(attrloc, 1, GL_FLOAT, GL_FALSE, 0, 0);
attrloc = glGetAttribLocation(program, "z");
glBindBuffer(GL_ARRAY_BUFFER, mesh_vbo[2]);
glBufferData(GL_ARRAY_BUFFER, sizeof(GLfloat) * MAP_NUM_TOTAL_VERTICES, &map_vertices[2][0], GL_STATIC_DRAW);
glEnableVertexAttribArray(attrloc);
glVertexAttribPointer(attrloc, 1, GL_FLOAT, GL_FALSE, 0, 0);
attrloc = glGetAttribLocation(program, "y");
glBindBuffer(GL_ARRAY_BUFFER, mesh_vbo[1]);
glBufferData(GL_ARRAY_BUFFER, sizeof(GLfloat) * MAP_NUM_TOTAL_VERTICES, &map_vertices[1][0], GL_DYNAMIC_DRAW);
glEnableVertexAttribArray(attrloc);
glVertexAttribPointer(attrloc, 1, GL_FLOAT, GL_FALSE, 0, 0);
}
/* Update VBO vertices from source data
*/
static void update_mesh(void)
{
glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(GLfloat) * MAP_NUM_TOTAL_VERTICES, &map_vertices[1][0]);
}
/**********************************************************************
* GLFW callback functions
*********************************************************************/
static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
switch(key)
{
case GLFW_KEY_ESCAPE:
/* Exit program on Escape */
glfwSetWindowShouldClose(window, GLFW_TRUE);
break;
}
}
static void error_callback(int error, const char* description)
{
fprintf(stderr, "Error: %s\n", description);
}
int main(int argc, char** argv)
{
GLFWwindow* window;
int iter;
double dt;
double last_update_time;
int frame;
float f;
GLint uloc_modelview;
GLint uloc_project;
int width, height;
GLuint shader_program;
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GLFW_TRUE);
window = glfwCreateWindow(800, 600, "GLFW OpenGL3 Heightmap demo", NULL, NULL);
if (! window )
{
glfwTerminate();
exit(EXIT_FAILURE);
}
/* Register events callback */
glfwSetKeyCallback(window, key_callback);
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
/* Prepare opengl resources for rendering */
shader_program = make_shader_program(vertex_shader_text, fragment_shader_text);
if (shader_program == 0u)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glUseProgram(shader_program);
uloc_project = glGetUniformLocation(shader_program, "project");
uloc_modelview = glGetUniformLocation(shader_program, "modelview");
/* Compute the projection matrix */
f = 1.0f / tanf(view_angle / 2.0f);
projection_matrix[0] = f / aspect_ratio;
projection_matrix[5] = f;
projection_matrix[10] = (z_far + z_near)/ (z_near - z_far);
projection_matrix[11] = -1.0f;
projection_matrix[14] = 2.0f * (z_far * z_near) / (z_near - z_far);
glUniformMatrix4fv(uloc_project, 1, GL_FALSE, projection_matrix);
/* Set the camera position */
modelview_matrix[12] = -5.0f;
modelview_matrix[13] = -5.0f;
modelview_matrix[14] = -20.0f;
glUniformMatrix4fv(uloc_modelview, 1, GL_FALSE, modelview_matrix);
/* Create mesh data */
init_map();
make_mesh(shader_program);
/* Create vao + vbo to store the mesh */
/* Create the vbo to store all the information for the grid and the height */
/* setup the scene ready for rendering */
glfwGetFramebufferSize(window, &width, &height);
glViewport(0, 0, width, height);
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
/* main loop */
frame = 0;
iter = 0;
last_update_time = glfwGetTime();
while (!glfwWindowShouldClose(window))
{
++frame;
/* render the next frame */
glClear(GL_COLOR_BUFFER_BIT);
glDrawElements(GL_LINES, 2* MAP_NUM_LINES , GL_UNSIGNED_INT, 0);
/* display and process events through callbacks */
glfwSwapBuffers(window);
glfwPollEvents();
/* Check the frame rate and update the heightmap if needed */
dt = glfwGetTime();
if ((dt - last_update_time) > 0.2)
{
/* generate the next iteration of the heightmap */
if (iter < MAX_ITER)
{
update_map(NUM_ITER_AT_A_TIME);
update_mesh();
iter += NUM_ITER_AT_A_TIME;
}
last_update_time = dt;
frame = 0;
}
}
glfwTerminate();
exit(EXIT_SUCCESS);
}

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//========================================================================
// Offscreen rendering example
// Copyright (c) Camilla Löwy <elmindreda@glfw.org>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
#include <glad/gl.h>
#include <GLFW/glfw3.h>
#if USE_NATIVE_OSMESA
#define GLFW_EXPOSE_NATIVE_OSMESA
#include <GLFW/glfw3native.h>
#endif
#include "linmath.h"
#include <stdlib.h>
#include <stdio.h>
#define STB_IMAGE_WRITE_IMPLEMENTATION
#include <stb_image_write.h>
static const struct
{
float x, y;
float r, g, b;
} vertices[3] =
{
{ -0.6f, -0.4f, 1.f, 0.f, 0.f },
{ 0.6f, -0.4f, 0.f, 1.f, 0.f },
{ 0.f, 0.6f, 0.f, 0.f, 1.f }
};
static const char* vertex_shader_text =
"#version 110\n"
"uniform mat4 MVP;\n"
"attribute vec3 vCol;\n"
"attribute vec2 vPos;\n"
"varying vec3 color;\n"
"void main()\n"
"{\n"
" gl_Position = MVP * vec4(vPos, 0.0, 1.0);\n"
" color = vCol;\n"
"}\n";
static const char* fragment_shader_text =
"#version 110\n"
"varying vec3 color;\n"
"void main()\n"
"{\n"
" gl_FragColor = vec4(color, 1.0);\n"
"}\n";
static void error_callback(int error, const char* description)
{
fprintf(stderr, "Error: %s\n", description);
}
int main(void)
{
GLFWwindow* window;
GLuint vertex_buffer, vertex_shader, fragment_shader, program;
GLint mvp_location, vpos_location, vcol_location;
float ratio;
int width, height;
mat4x4 mvp;
char* buffer;
glfwSetErrorCallback(error_callback);
glfwInitHint(GLFW_COCOA_MENUBAR, GLFW_FALSE);
if (!glfwInit())
exit(EXIT_FAILURE);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
glfwWindowHint(GLFW_VISIBLE, GLFW_FALSE);
window = glfwCreateWindow(640, 480, "Simple example", NULL, NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
// NOTE: OpenGL error checks have been omitted for brevity
glGenBuffers(1, &vertex_buffer);
glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
vertex_shader = glCreateShader(GL_VERTEX_SHADER);
glShaderSource(vertex_shader, 1, &vertex_shader_text, NULL);
glCompileShader(vertex_shader);
fragment_shader = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(fragment_shader, 1, &fragment_shader_text, NULL);
glCompileShader(fragment_shader);
program = glCreateProgram();
glAttachShader(program, vertex_shader);
glAttachShader(program, fragment_shader);
glLinkProgram(program);
mvp_location = glGetUniformLocation(program, "MVP");
vpos_location = glGetAttribLocation(program, "vPos");
vcol_location = glGetAttribLocation(program, "vCol");
glEnableVertexAttribArray(vpos_location);
glVertexAttribPointer(vpos_location, 2, GL_FLOAT, GL_FALSE,
sizeof(vertices[0]), (void*) 0);
glEnableVertexAttribArray(vcol_location);
glVertexAttribPointer(vcol_location, 3, GL_FLOAT, GL_FALSE,
sizeof(vertices[0]), (void*) (sizeof(float) * 2));
glfwGetFramebufferSize(window, &width, &height);
ratio = width / (float) height;
glViewport(0, 0, width, height);
glClear(GL_COLOR_BUFFER_BIT);
mat4x4_ortho(mvp, -ratio, ratio, -1.f, 1.f, 1.f, -1.f);
glUseProgram(program);
glUniformMatrix4fv(mvp_location, 1, GL_FALSE, (const GLfloat*) mvp);
glDrawArrays(GL_TRIANGLES, 0, 3);
#if USE_NATIVE_OSMESA
glfwGetOSMesaColorBuffer(window, &width, &height, NULL, (void**) &buffer);
#else
buffer = calloc(4, width * height);
glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
#endif
// Write image Y-flipped because OpenGL
stbi_write_png("offscreen.png",
width, height, 4,
buffer + (width * 4 * (height - 1)),
-width * 4);
#if USE_NATIVE_OSMESA
// Here is where there's nothing
#else
free(buffer);
#endif
glfwDestroyWindow(window);
glfwTerminate();
exit(EXIT_SUCCESS);
}

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//========================================================================
// Context sharing example
// Copyright (c) Camilla Löwy <elmindreda@glfw.org>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
#include <glad/gl.h>
#include <GLFW/glfw3.h>
#include <stdio.h>
#include <stdlib.h>
#include "getopt.h"
#include "linmath.h"
static const char* vertex_shader_text =
"#version 110\n"
"uniform mat4 MVP;\n"
"attribute vec2 vPos;\n"
"varying vec2 texcoord;\n"
"void main()\n"
"{\n"
" gl_Position = MVP * vec4(vPos, 0.0, 1.0);\n"
" texcoord = vPos;\n"
"}\n";
static const char* fragment_shader_text =
"#version 110\n"
"uniform sampler2D texture;\n"
"uniform vec3 color;\n"
"varying vec2 texcoord;\n"
"void main()\n"
"{\n"
" gl_FragColor = vec4(color * texture2D(texture, texcoord).rgb, 1.0);\n"
"}\n";
static const vec2 vertices[4] =
{
{ 0.f, 0.f },
{ 1.f, 0.f },
{ 1.f, 1.f },
{ 0.f, 1.f }
};
static void error_callback(int error, const char* description)
{
fprintf(stderr, "Error: %s\n", description);
}
static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
if (action == GLFW_PRESS && key == GLFW_KEY_ESCAPE)
glfwSetWindowShouldClose(window, GLFW_TRUE);
}
int main(int argc, char** argv)
{
GLFWwindow* windows[2];
GLuint texture, program, vertex_buffer;
GLint mvp_location, vpos_location, color_location, texture_location;
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
windows[0] = glfwCreateWindow(400, 400, "First", NULL, NULL);
if (!windows[0])
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwSetKeyCallback(windows[0], key_callback);
glfwMakeContextCurrent(windows[0]);
// Only enable vsync for the first of the windows to be swapped to
// avoid waiting out the interval for each window
glfwSwapInterval(1);
// The contexts are created with the same APIs so the function
// pointers should be re-usable between them
gladLoadGL(glfwGetProcAddress);
// Create the OpenGL objects inside the first context, created above
// All objects will be shared with the second context, created below
{
int x, y;
char pixels[16 * 16];
GLuint vertex_shader, fragment_shader;
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
srand((unsigned int) glfwGetTimerValue());
for (y = 0; y < 16; y++)
{
for (x = 0; x < 16; x++)
pixels[y * 16 + x] = rand() % 256;
}
glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, 16, 16, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, pixels);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
vertex_shader = glCreateShader(GL_VERTEX_SHADER);
glShaderSource(vertex_shader, 1, &vertex_shader_text, NULL);
glCompileShader(vertex_shader);
fragment_shader = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(fragment_shader, 1, &fragment_shader_text, NULL);
glCompileShader(fragment_shader);
program = glCreateProgram();
glAttachShader(program, vertex_shader);
glAttachShader(program, fragment_shader);
glLinkProgram(program);
mvp_location = glGetUniformLocation(program, "MVP");
color_location = glGetUniformLocation(program, "color");
texture_location = glGetUniformLocation(program, "texture");
vpos_location = glGetAttribLocation(program, "vPos");
glGenBuffers(1, &vertex_buffer);
glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
}
glUseProgram(program);
glUniform1i(texture_location, 0);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, texture);
glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer);
glEnableVertexAttribArray(vpos_location);
glVertexAttribPointer(vpos_location, 2, GL_FLOAT, GL_FALSE,
sizeof(vertices[0]), (void*) 0);
windows[1] = glfwCreateWindow(400, 400, "Second", NULL, windows[0]);
if (!windows[1])
{
glfwTerminate();
exit(EXIT_FAILURE);
}
// Place the second window to the right of the first
{
int xpos, ypos, left, right, width;
glfwGetWindowSize(windows[0], &width, NULL);
glfwGetWindowFrameSize(windows[0], &left, NULL, &right, NULL);
glfwGetWindowPos(windows[0], &xpos, &ypos);
glfwSetWindowPos(windows[1], xpos + width + left + right, ypos);
}
glfwSetKeyCallback(windows[1], key_callback);
glfwMakeContextCurrent(windows[1]);
// While objects are shared, the global context state is not and will
// need to be set up for each context
glUseProgram(program);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, texture);
glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer);
glEnableVertexAttribArray(vpos_location);
glVertexAttribPointer(vpos_location, 2, GL_FLOAT, GL_FALSE,
sizeof(vertices[0]), (void*) 0);
while (!glfwWindowShouldClose(windows[0]) &&
!glfwWindowShouldClose(windows[1]))
{
int i;
const vec3 colors[2] =
{
{ 0.8f, 0.4f, 1.f },
{ 0.3f, 0.4f, 1.f }
};
for (i = 0; i < 2; i++)
{
int width, height;
mat4x4 mvp;
glfwGetFramebufferSize(windows[i], &width, &height);
glfwMakeContextCurrent(windows[i]);
glViewport(0, 0, width, height);
mat4x4_ortho(mvp, 0.f, 1.f, 0.f, 1.f, 0.f, 1.f);
glUniformMatrix4fv(mvp_location, 1, GL_FALSE, (const GLfloat*) mvp);
glUniform3fv(color_location, 1, colors[i]);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
glfwSwapBuffers(windows[i]);
}
glfwWaitEvents();
}
glfwTerminate();
exit(EXIT_SUCCESS);
}

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//========================================================================
// Simple GLFW example
// Copyright (c) Camilla Löwy <elmindreda@glfw.org>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
//! [code]
#include <glad/gl.h>
#include <GLFW/glfw3.h>
#include "linmath.h"
#include <stdlib.h>
#include <stdio.h>
static const struct
{
float x, y;
float r, g, b;
} vertices[3] =
{
{ -0.6f, -0.4f, 1.f, 0.f, 0.f },
{ 0.6f, -0.4f, 0.f, 1.f, 0.f },
{ 0.f, 0.6f, 0.f, 0.f, 1.f }
};
static const char* vertex_shader_text =
"#version 110\n"
"uniform mat4 MVP;\n"
"attribute vec3 vCol;\n"
"attribute vec2 vPos;\n"
"varying vec3 color;\n"
"void main()\n"
"{\n"
" gl_Position = MVP * vec4(vPos, 0.0, 1.0);\n"
" color = vCol;\n"
"}\n";
static const char* fragment_shader_text =
"#version 110\n"
"varying vec3 color;\n"
"void main()\n"
"{\n"
" gl_FragColor = vec4(color, 1.0);\n"
"}\n";
static void error_callback(int error, const char* description)
{
fprintf(stderr, "Error: %s\n", description);
}
static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
glfwSetWindowShouldClose(window, GLFW_TRUE);
}
int main(void)
{
GLFWwindow* window;
GLuint vertex_buffer, vertex_shader, fragment_shader, program;
GLint mvp_location, vpos_location, vcol_location;
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
window = glfwCreateWindow(640, 480, "Simple example", NULL, NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwSetKeyCallback(window, key_callback);
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
glfwSwapInterval(1);
// NOTE: OpenGL error checks have been omitted for brevity
glGenBuffers(1, &vertex_buffer);
glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
vertex_shader = glCreateShader(GL_VERTEX_SHADER);
glShaderSource(vertex_shader, 1, &vertex_shader_text, NULL);
glCompileShader(vertex_shader);
fragment_shader = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(fragment_shader, 1, &fragment_shader_text, NULL);
glCompileShader(fragment_shader);
program = glCreateProgram();
glAttachShader(program, vertex_shader);
glAttachShader(program, fragment_shader);
glLinkProgram(program);
mvp_location = glGetUniformLocation(program, "MVP");
vpos_location = glGetAttribLocation(program, "vPos");
vcol_location = glGetAttribLocation(program, "vCol");
glEnableVertexAttribArray(vpos_location);
glVertexAttribPointer(vpos_location, 2, GL_FLOAT, GL_FALSE,
sizeof(vertices[0]), (void*) 0);
glEnableVertexAttribArray(vcol_location);
glVertexAttribPointer(vcol_location, 3, GL_FLOAT, GL_FALSE,
sizeof(vertices[0]), (void*) (sizeof(float) * 2));
while (!glfwWindowShouldClose(window))
{
float ratio;
int width, height;
mat4x4 m, p, mvp;
glfwGetFramebufferSize(window, &width, &height);
ratio = width / (float) height;
glViewport(0, 0, width, height);
glClear(GL_COLOR_BUFFER_BIT);
mat4x4_identity(m);
mat4x4_rotate_Z(m, m, (float) glfwGetTime());
mat4x4_ortho(p, -ratio, ratio, -1.f, 1.f, 1.f, -1.f);
mat4x4_mul(mvp, p, m);
glUseProgram(program);
glUniformMatrix4fv(mvp_location, 1, GL_FALSE, (const GLfloat*) mvp);
glDrawArrays(GL_TRIANGLES, 0, 3);
glfwSwapBuffers(window);
glfwPollEvents();
}
glfwDestroyWindow(window);
glfwTerminate();
exit(EXIT_SUCCESS);
}
//! [code]

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//========================================================================
// This is an example program for the GLFW library
//
// The program uses a "split window" view, rendering four views of the
// same scene in one window (e.g. uesful for 3D modelling software). This
// demo uses scissors to separete the four different rendering areas from
// each other.
//
// (If the code seems a little bit strange here and there, it may be
// because I am not a friend of orthogonal projections)
//========================================================================
#include <glad/gl.h>
#include <GLFW/glfw3.h>
#if defined(_MSC_VER)
// Make MS math.h define M_PI
#define _USE_MATH_DEFINES
#endif
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <linmath.h>
//========================================================================
// Global variables
//========================================================================
// Mouse position
static double xpos = 0, ypos = 0;
// Window size
static int width, height;
// Active view: 0 = none, 1 = upper left, 2 = upper right, 3 = lower left,
// 4 = lower right
static int active_view = 0;
// Rotation around each axis
static int rot_x = 0, rot_y = 0, rot_z = 0;
// Do redraw?
static int do_redraw = 1;
//========================================================================
// Draw a solid torus (use a display list for the model)
//========================================================================
#define TORUS_MAJOR 1.5
#define TORUS_MINOR 0.5
#define TORUS_MAJOR_RES 32
#define TORUS_MINOR_RES 32
static void drawTorus(void)
{
static GLuint torus_list = 0;
int i, j, k;
double s, t, x, y, z, nx, ny, nz, scale, twopi;
if (!torus_list)
{
// Start recording displaylist
torus_list = glGenLists(1);
glNewList(torus_list, GL_COMPILE_AND_EXECUTE);
// Draw torus
twopi = 2.0 * M_PI;
for (i = 0; i < TORUS_MINOR_RES; i++)
{
glBegin(GL_QUAD_STRIP);
for (j = 0; j <= TORUS_MAJOR_RES; j++)
{
for (k = 1; k >= 0; k--)
{
s = (i + k) % TORUS_MINOR_RES + 0.5;
t = j % TORUS_MAJOR_RES;
// Calculate point on surface
x = (TORUS_MAJOR + TORUS_MINOR * cos(s * twopi / TORUS_MINOR_RES)) * cos(t * twopi / TORUS_MAJOR_RES);
y = TORUS_MINOR * sin(s * twopi / TORUS_MINOR_RES);
z = (TORUS_MAJOR + TORUS_MINOR * cos(s * twopi / TORUS_MINOR_RES)) * sin(t * twopi / TORUS_MAJOR_RES);
// Calculate surface normal
nx = x - TORUS_MAJOR * cos(t * twopi / TORUS_MAJOR_RES);
ny = y;
nz = z - TORUS_MAJOR * sin(t * twopi / TORUS_MAJOR_RES);
scale = 1.0 / sqrt(nx*nx + ny*ny + nz*nz);
nx *= scale;
ny *= scale;
nz *= scale;
glNormal3f((float) nx, (float) ny, (float) nz);
glVertex3f((float) x, (float) y, (float) z);
}
}
glEnd();
}
// Stop recording displaylist
glEndList();
}
else
{
// Playback displaylist
glCallList(torus_list);
}
}
//========================================================================
// Draw the scene (a rotating torus)
//========================================================================
static void drawScene(void)
{
const GLfloat model_diffuse[4] = {1.0f, 0.8f, 0.8f, 1.0f};
const GLfloat model_specular[4] = {0.6f, 0.6f, 0.6f, 1.0f};
const GLfloat model_shininess = 20.0f;
glPushMatrix();
// Rotate the object
glRotatef((GLfloat) rot_x * 0.5f, 1.0f, 0.0f, 0.0f);
glRotatef((GLfloat) rot_y * 0.5f, 0.0f, 1.0f, 0.0f);
glRotatef((GLfloat) rot_z * 0.5f, 0.0f, 0.0f, 1.0f);
// Set model color (used for orthogonal views, lighting disabled)
glColor4fv(model_diffuse);
// Set model material (used for perspective view, lighting enabled)
glMaterialfv(GL_FRONT, GL_DIFFUSE, model_diffuse);
glMaterialfv(GL_FRONT, GL_SPECULAR, model_specular);
glMaterialf(GL_FRONT, GL_SHININESS, model_shininess);
// Draw torus
drawTorus();
glPopMatrix();
}
//========================================================================
// Draw a 2D grid (used for orthogonal views)
//========================================================================
static void drawGrid(float scale, int steps)
{
int i;
float x, y;
mat4x4 view;
glPushMatrix();
// Set background to some dark bluish grey
glClearColor(0.05f, 0.05f, 0.2f, 0.0f);
glClear(GL_COLOR_BUFFER_BIT);
// Setup modelview matrix (flat XY view)
{
vec3 eye = { 0.f, 0.f, 1.f };
vec3 center = { 0.f, 0.f, 0.f };
vec3 up = { 0.f, 1.f, 0.f };
mat4x4_look_at(view, eye, center, up);
}
glLoadMatrixf((const GLfloat*) view);
// We don't want to update the Z-buffer
glDepthMask(GL_FALSE);
// Set grid color
glColor3f(0.0f, 0.5f, 0.5f);
glBegin(GL_LINES);
// Horizontal lines
x = scale * 0.5f * (float) (steps - 1);
y = -scale * 0.5f * (float) (steps - 1);
for (i = 0; i < steps; i++)
{
glVertex3f(-x, y, 0.0f);
glVertex3f(x, y, 0.0f);
y += scale;
}
// Vertical lines
x = -scale * 0.5f * (float) (steps - 1);
y = scale * 0.5f * (float) (steps - 1);
for (i = 0; i < steps; i++)
{
glVertex3f(x, -y, 0.0f);
glVertex3f(x, y, 0.0f);
x += scale;
}
glEnd();
// Enable Z-buffer writing again
glDepthMask(GL_TRUE);
glPopMatrix();
}
//========================================================================
// Draw all views
//========================================================================
static void drawAllViews(void)
{
const GLfloat light_position[4] = {0.0f, 8.0f, 8.0f, 1.0f};
const GLfloat light_diffuse[4] = {1.0f, 1.0f, 1.0f, 1.0f};
const GLfloat light_specular[4] = {1.0f, 1.0f, 1.0f, 1.0f};
const GLfloat light_ambient[4] = {0.2f, 0.2f, 0.3f, 1.0f};
float aspect;
mat4x4 view, projection;
// Calculate aspect of window
if (height > 0)
aspect = (float) width / (float) height;
else
aspect = 1.f;
// Clear screen
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Enable scissor test
glEnable(GL_SCISSOR_TEST);
// Enable depth test
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
// ** ORTHOGONAL VIEWS **
// For orthogonal views, use wireframe rendering
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
// Enable line anti-aliasing
glEnable(GL_LINE_SMOOTH);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
// Setup orthogonal projection matrix
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-3.0 * aspect, 3.0 * aspect, -3.0, 3.0, 1.0, 50.0);
// Upper left view (TOP VIEW)
glViewport(0, height / 2, width / 2, height / 2);
glScissor(0, height / 2, width / 2, height / 2);
glMatrixMode(GL_MODELVIEW);
{
vec3 eye = { 0.f, 10.f, 1e-3f };
vec3 center = { 0.f, 0.f, 0.f };
vec3 up = { 0.f, 1.f, 0.f };
mat4x4_look_at( view, eye, center, up );
}
glLoadMatrixf((const GLfloat*) view);
drawGrid(0.5, 12);
drawScene();
// Lower left view (FRONT VIEW)
glViewport(0, 0, width / 2, height / 2);
glScissor(0, 0, width / 2, height / 2);
glMatrixMode(GL_MODELVIEW);
{
vec3 eye = { 0.f, 0.f, 10.f };
vec3 center = { 0.f, 0.f, 0.f };
vec3 up = { 0.f, 1.f, 0.f };
mat4x4_look_at( view, eye, center, up );
}
glLoadMatrixf((const GLfloat*) view);
drawGrid(0.5, 12);
drawScene();
// Lower right view (SIDE VIEW)
glViewport(width / 2, 0, width / 2, height / 2);
glScissor(width / 2, 0, width / 2, height / 2);
glMatrixMode(GL_MODELVIEW);
{
vec3 eye = { 10.f, 0.f, 0.f };
vec3 center = { 0.f, 0.f, 0.f };
vec3 up = { 0.f, 1.f, 0.f };
mat4x4_look_at( view, eye, center, up );
}
glLoadMatrixf((const GLfloat*) view);
drawGrid(0.5, 12);
drawScene();
// Disable line anti-aliasing
glDisable(GL_LINE_SMOOTH);
glDisable(GL_BLEND);
// ** PERSPECTIVE VIEW **
// For perspective view, use solid rendering
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
// Enable face culling (faster rendering)
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glFrontFace(GL_CW);
// Setup perspective projection matrix
glMatrixMode(GL_PROJECTION);
mat4x4_perspective(projection,
65.f * (float) M_PI / 180.f,
aspect,
1.f, 50.f);
glLoadMatrixf((const GLfloat*) projection);
// Upper right view (PERSPECTIVE VIEW)
glViewport(width / 2, height / 2, width / 2, height / 2);
glScissor(width / 2, height / 2, width / 2, height / 2);
glMatrixMode(GL_MODELVIEW);
{
vec3 eye = { 3.f, 1.5f, 3.f };
vec3 center = { 0.f, 0.f, 0.f };
vec3 up = { 0.f, 1.f, 0.f };
mat4x4_look_at( view, eye, center, up );
}
glLoadMatrixf((const GLfloat*) view);
// Configure and enable light source 1
glLightfv(GL_LIGHT1, GL_POSITION, light_position);
glLightfv(GL_LIGHT1, GL_AMBIENT, light_ambient);
glLightfv(GL_LIGHT1, GL_DIFFUSE, light_diffuse);
glLightfv(GL_LIGHT1, GL_SPECULAR, light_specular);
glEnable(GL_LIGHT1);
glEnable(GL_LIGHTING);
// Draw scene
drawScene();
// Disable lighting
glDisable(GL_LIGHTING);
// Disable face culling
glDisable(GL_CULL_FACE);
// Disable depth test
glDisable(GL_DEPTH_TEST);
// Disable scissor test
glDisable(GL_SCISSOR_TEST);
// Draw a border around the active view
if (active_view > 0 && active_view != 2)
{
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0.0, 2.0, 0.0, 2.0, 0.0, 1.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef((GLfloat) ((active_view - 1) & 1), (GLfloat) (1 - (active_view - 1) / 2), 0.0f);
glColor3f(1.0f, 1.0f, 0.6f);
glBegin(GL_LINE_STRIP);
glVertex2i(0, 0);
glVertex2i(1, 0);
glVertex2i(1, 1);
glVertex2i(0, 1);
glVertex2i(0, 0);
glEnd();
}
}
//========================================================================
// Framebuffer size callback function
//========================================================================
static void framebufferSizeFun(GLFWwindow* window, int w, int h)
{
width = w;
height = h > 0 ? h : 1;
do_redraw = 1;
}
//========================================================================
// Window refresh callback function
//========================================================================
static void windowRefreshFun(GLFWwindow* window)
{
drawAllViews();
glfwSwapBuffers(window);
do_redraw = 0;
}
//========================================================================
// Mouse position callback function
//========================================================================
static void cursorPosFun(GLFWwindow* window, double x, double y)
{
int wnd_width, wnd_height, fb_width, fb_height;
double scale;
glfwGetWindowSize(window, &wnd_width, &wnd_height);
glfwGetFramebufferSize(window, &fb_width, &fb_height);
scale = (double) fb_width / (double) wnd_width;
x *= scale;
y *= scale;
// Depending on which view was selected, rotate around different axes
switch (active_view)
{
case 1:
rot_x += (int) (y - ypos);
rot_z += (int) (x - xpos);
do_redraw = 1;
break;
case 3:
rot_x += (int) (y - ypos);
rot_y += (int) (x - xpos);
do_redraw = 1;
break;
case 4:
rot_y += (int) (x - xpos);
rot_z += (int) (y - ypos);
do_redraw = 1;
break;
default:
// Do nothing for perspective view, or if no view is selected
break;
}
// Remember cursor position
xpos = x;
ypos = y;
}
//========================================================================
// Mouse button callback function
//========================================================================
static void mouseButtonFun(GLFWwindow* window, int button, int action, int mods)
{
if ((button == GLFW_MOUSE_BUTTON_LEFT) && action == GLFW_PRESS)
{
// Detect which of the four views was clicked
active_view = 1;
if (xpos >= width / 2)
active_view += 1;
if (ypos >= height / 2)
active_view += 2;
}
else if (button == GLFW_MOUSE_BUTTON_LEFT)
{
// Deselect any previously selected view
active_view = 0;
}
do_redraw = 1;
}
static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
glfwSetWindowShouldClose(window, GLFW_TRUE);
}
//========================================================================
// main
//========================================================================
int main(void)
{
GLFWwindow* window;
// Initialise GLFW
if (!glfwInit())
{
fprintf(stderr, "Failed to initialize GLFW\n");
exit(EXIT_FAILURE);
}
glfwWindowHint(GLFW_SAMPLES, 4);
// Open OpenGL window
window = glfwCreateWindow(500, 500, "Split view demo", NULL, NULL);
if (!window)
{
fprintf(stderr, "Failed to open GLFW window\n");
glfwTerminate();
exit(EXIT_FAILURE);
}
// Set callback functions
glfwSetFramebufferSizeCallback(window, framebufferSizeFun);
glfwSetWindowRefreshCallback(window, windowRefreshFun);
glfwSetCursorPosCallback(window, cursorPosFun);
glfwSetMouseButtonCallback(window, mouseButtonFun);
glfwSetKeyCallback(window, key_callback);
// Enable vsync
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
glfwSwapInterval(1);
if (GLAD_GL_ARB_multisample || GLAD_GL_VERSION_1_3)
glEnable(GL_MULTISAMPLE_ARB);
glfwGetFramebufferSize(window, &width, &height);
framebufferSizeFun(window, width, height);
// Main loop
for (;;)
{
// Only redraw if we need to
if (do_redraw)
windowRefreshFun(window);
// Wait for new events
glfwWaitEvents();
// Check if the window should be closed
if (glfwWindowShouldClose(window))
break;
}
// Close OpenGL window and terminate GLFW
glfwTerminate();
exit(EXIT_SUCCESS);
}

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/*****************************************************************************
* Wave Simulation in OpenGL
* (C) 2002 Jakob Thomsen
* http://home.in.tum.de/~thomsen
* Modified for GLFW by Sylvain Hellegouarch - sh@programmationworld.com
* Modified for variable frame rate by Marcus Geelnard
* 2003-Jan-31: Minor cleanups and speedups / MG
* 2010-10-24: Formatting and cleanup - Camilla Löwy
*****************************************************************************/
#if defined(_MSC_VER)
// Make MS math.h define M_PI
#define _USE_MATH_DEFINES
#endif
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <glad/gl.h>
#include <GLFW/glfw3.h>
#include <linmath.h>
// Maximum delta T to allow for differential calculations
#define MAX_DELTA_T 0.01
// Animation speed (10.0 looks good)
#define ANIMATION_SPEED 10.0
GLfloat alpha = 210.f, beta = -70.f;
GLfloat zoom = 2.f;
double cursorX;
double cursorY;
struct Vertex
{
GLfloat x, y, z;
GLfloat r, g, b;
};
#define GRIDW 50
#define GRIDH 50
#define VERTEXNUM (GRIDW*GRIDH)
#define QUADW (GRIDW - 1)
#define QUADH (GRIDH - 1)
#define QUADNUM (QUADW*QUADH)
GLuint quad[4 * QUADNUM];
struct Vertex vertex[VERTEXNUM];
/* The grid will look like this:
*
* 3 4 5
* *---*---*
* | | |
* | 0 | 1 |
* | | |
* *---*---*
* 0 1 2
*/
//========================================================================
// Initialize grid geometry
//========================================================================
void init_vertices(void)
{
int x, y, p;
// Place the vertices in a grid
for (y = 0; y < GRIDH; y++)
{
for (x = 0; x < GRIDW; x++)
{
p = y * GRIDW + x;
vertex[p].x = (GLfloat) (x - GRIDW / 2) / (GLfloat) (GRIDW / 2);
vertex[p].y = (GLfloat) (y - GRIDH / 2) / (GLfloat) (GRIDH / 2);
vertex[p].z = 0;
if ((x % 4 < 2) ^ (y % 4 < 2))
vertex[p].r = 0.0;
else
vertex[p].r = 1.0;
vertex[p].g = (GLfloat) y / (GLfloat) GRIDH;
vertex[p].b = 1.f - ((GLfloat) x / (GLfloat) GRIDW + (GLfloat) y / (GLfloat) GRIDH) / 2.f;
}
}
for (y = 0; y < QUADH; y++)
{
for (x = 0; x < QUADW; x++)
{
p = 4 * (y * QUADW + x);
quad[p + 0] = y * GRIDW + x; // Some point
quad[p + 1] = y * GRIDW + x + 1; // Neighbor at the right side
quad[p + 2] = (y + 1) * GRIDW + x + 1; // Upper right neighbor
quad[p + 3] = (y + 1) * GRIDW + x; // Upper neighbor
}
}
}
double dt;
double p[GRIDW][GRIDH];
double vx[GRIDW][GRIDH], vy[GRIDW][GRIDH];
double ax[GRIDW][GRIDH], ay[GRIDW][GRIDH];
//========================================================================
// Initialize grid
//========================================================================
void init_grid(void)
{
int x, y;
double dx, dy, d;
for (y = 0; y < GRIDH; y++)
{
for (x = 0; x < GRIDW; x++)
{
dx = (double) (x - GRIDW / 2);
dy = (double) (y - GRIDH / 2);
d = sqrt(dx * dx + dy * dy);
if (d < 0.1 * (double) (GRIDW / 2))
{
d = d * 10.0;
p[x][y] = -cos(d * (M_PI / (double)(GRIDW * 4))) * 100.0;
}
else
p[x][y] = 0.0;
vx[x][y] = 0.0;
vy[x][y] = 0.0;
}
}
}
//========================================================================
// Draw scene
//========================================================================
void draw_scene(GLFWwindow* window)
{
// Clear the color and depth buffers
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// We don't want to modify the projection matrix
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
// Move back
glTranslatef(0.0, 0.0, -zoom);
// Rotate the view
glRotatef(beta, 1.0, 0.0, 0.0);
glRotatef(alpha, 0.0, 0.0, 1.0);
glDrawElements(GL_QUADS, 4 * QUADNUM, GL_UNSIGNED_INT, quad);
glfwSwapBuffers(window);
}
//========================================================================
// Initialize Miscellaneous OpenGL state
//========================================================================
void init_opengl(void)
{
// Use Gouraud (smooth) shading
glShadeModel(GL_SMOOTH);
// Switch on the z-buffer
glEnable(GL_DEPTH_TEST);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
glVertexPointer(3, GL_FLOAT, sizeof(struct Vertex), vertex);
glColorPointer(3, GL_FLOAT, sizeof(struct Vertex), &vertex[0].r); // Pointer to the first color
glPointSize(2.0);
// Background color is black
glClearColor(0, 0, 0, 0);
}
//========================================================================
// Modify the height of each vertex according to the pressure
//========================================================================
void adjust_grid(void)
{
int pos;
int x, y;
for (y = 0; y < GRIDH; y++)
{
for (x = 0; x < GRIDW; x++)
{
pos = y * GRIDW + x;
vertex[pos].z = (float) (p[x][y] * (1.0 / 50.0));
}
}
}
//========================================================================
// Calculate wave propagation
//========================================================================
void calc_grid(void)
{
int x, y, x2, y2;
double time_step = dt * ANIMATION_SPEED;
// Compute accelerations
for (x = 0; x < GRIDW; x++)
{
x2 = (x + 1) % GRIDW;
for(y = 0; y < GRIDH; y++)
ax[x][y] = p[x][y] - p[x2][y];
}
for (y = 0; y < GRIDH; y++)
{
y2 = (y + 1) % GRIDH;
for(x = 0; x < GRIDW; x++)
ay[x][y] = p[x][y] - p[x][y2];
}
// Compute speeds
for (x = 0; x < GRIDW; x++)
{
for (y = 0; y < GRIDH; y++)
{
vx[x][y] = vx[x][y] + ax[x][y] * time_step;
vy[x][y] = vy[x][y] + ay[x][y] * time_step;
}
}
// Compute pressure
for (x = 1; x < GRIDW; x++)
{
x2 = x - 1;
for (y = 1; y < GRIDH; y++)
{
y2 = y - 1;
p[x][y] = p[x][y] + (vx[x2][y] - vx[x][y] + vy[x][y2] - vy[x][y]) * time_step;
}
}
}
//========================================================================
// Print errors
//========================================================================
static void error_callback(int error, const char* description)
{
fprintf(stderr, "Error: %s\n", description);
}
//========================================================================
// Handle key strokes
//========================================================================
void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
if (action != GLFW_PRESS)
return;
switch (key)
{
case GLFW_KEY_ESCAPE:
glfwSetWindowShouldClose(window, GLFW_TRUE);
break;
case GLFW_KEY_SPACE:
init_grid();
break;
case GLFW_KEY_LEFT:
alpha += 5;
break;
case GLFW_KEY_RIGHT:
alpha -= 5;
break;
case GLFW_KEY_UP:
beta -= 5;
break;
case GLFW_KEY_DOWN:
beta += 5;
break;
case GLFW_KEY_PAGE_UP:
zoom -= 0.25f;
if (zoom < 0.f)
zoom = 0.f;
break;
case GLFW_KEY_PAGE_DOWN:
zoom += 0.25f;
break;
default:
break;
}
}
//========================================================================
// Callback function for mouse button events
//========================================================================
void mouse_button_callback(GLFWwindow* window, int button, int action, int mods)
{
if (button != GLFW_MOUSE_BUTTON_LEFT)
return;
if (action == GLFW_PRESS)
{
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
glfwGetCursorPos(window, &cursorX, &cursorY);
}
else
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
}
//========================================================================
// Callback function for cursor motion events
//========================================================================
void cursor_position_callback(GLFWwindow* window, double x, double y)
{
if (glfwGetInputMode(window, GLFW_CURSOR) == GLFW_CURSOR_DISABLED)
{
alpha += (GLfloat) (x - cursorX) / 10.f;
beta += (GLfloat) (y - cursorY) / 10.f;
cursorX = x;
cursorY = y;
}
}
//========================================================================
// Callback function for scroll events
//========================================================================
void scroll_callback(GLFWwindow* window, double x, double y)
{
zoom += (float) y / 4.f;
if (zoom < 0)
zoom = 0;
}
//========================================================================
// Callback function for framebuffer resize events
//========================================================================
void framebuffer_size_callback(GLFWwindow* window, int width, int height)
{
float ratio = 1.f;
mat4x4 projection;
if (height > 0)
ratio = (float) width / (float) height;
// Setup viewport
glViewport(0, 0, width, height);
// Change to the projection matrix and set our viewing volume
glMatrixMode(GL_PROJECTION);
mat4x4_perspective(projection,
60.f * (float) M_PI / 180.f,
ratio,
1.f, 1024.f);
glLoadMatrixf((const GLfloat*) projection);
}
//========================================================================
// main
//========================================================================
int main(int argc, char* argv[])
{
GLFWwindow* window;
double t, dt_total, t_old;
int width, height;
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
window = glfwCreateWindow(640, 480, "Wave Simulation", NULL, NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwSetKeyCallback(window, key_callback);
glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
glfwSetMouseButtonCallback(window, mouse_button_callback);
glfwSetCursorPosCallback(window, cursor_position_callback);
glfwSetScrollCallback(window, scroll_callback);
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
glfwSwapInterval(1);
glfwGetFramebufferSize(window, &width, &height);
framebuffer_size_callback(window, width, height);
// Initialize OpenGL
init_opengl();
// Initialize simulation
init_vertices();
init_grid();
adjust_grid();
// Initialize timer
t_old = glfwGetTime() - 0.01;
while (!glfwWindowShouldClose(window))
{
t = glfwGetTime();
dt_total = t - t_old;
t_old = t;
// Safety - iterate if dt_total is too large
while (dt_total > 0.f)
{
// Select iteration time step
dt = dt_total > MAX_DELTA_T ? MAX_DELTA_T : dt_total;
dt_total -= dt;
// Calculate wave propagation
calc_grid();
}
// Compute height of each vertex
adjust_grid();
// Draw wave grid to OpenGL display
draw_scene(window);
glfwPollEvents();
}
glfwTerminate();
exit(EXIT_SUCCESS);
}

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/*************************************************************************
* GLFW 3.3 - www.glfw.org
* A library for OpenGL, window and input
*------------------------------------------------------------------------
* Copyright (c) 2002-2006 Marcus Geelnard
* Copyright (c) 2006-2018 Camilla Löwy <elmindreda@glfw.org>
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would
* be appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not
* be misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*
*************************************************************************/
#ifndef _glfw3_native_h_
#define _glfw3_native_h_
#ifdef __cplusplus
extern "C" {
#endif
/*************************************************************************
* Doxygen documentation
*************************************************************************/
/*! @file glfw3native.h
* @brief The header of the native access functions.
*
* This is the header file of the native access functions. See @ref native for
* more information.
*/
/*! @defgroup native Native access
* @brief Functions related to accessing native handles.
*
* **By using the native access functions you assert that you know what you're
* doing and how to fix problems caused by using them. If you don't, you
* shouldn't be using them.**
*
* Before the inclusion of @ref glfw3native.h, you may define zero or more
* window system API macro and zero or more context creation API macros.
*
* The chosen backends must match those the library was compiled for. Failure
* to do this will cause a link-time error.
*
* The available window API macros are:
* * `GLFW_EXPOSE_NATIVE_WIN32`
* * `GLFW_EXPOSE_NATIVE_COCOA`
* * `GLFW_EXPOSE_NATIVE_X11`
* * `GLFW_EXPOSE_NATIVE_WAYLAND`
*
* The available context API macros are:
* * `GLFW_EXPOSE_NATIVE_WGL`
* * `GLFW_EXPOSE_NATIVE_NSGL`
* * `GLFW_EXPOSE_NATIVE_GLX`
* * `GLFW_EXPOSE_NATIVE_EGL`
* * `GLFW_EXPOSE_NATIVE_OSMESA`
*
* These macros select which of the native access functions that are declared
* and which platform-specific headers to include. It is then up your (by
* definition platform-specific) code to handle which of these should be
* defined.
*/
/*************************************************************************
* System headers and types
*************************************************************************/
#if defined(GLFW_EXPOSE_NATIVE_WIN32) || defined(GLFW_EXPOSE_NATIVE_WGL)
// This is a workaround for the fact that glfw3.h needs to export APIENTRY (for
// example to allow applications to correctly declare a GL_ARB_debug_output
// callback) but windows.h assumes no one will define APIENTRY before it does
#if defined(GLFW_APIENTRY_DEFINED)
#undef APIENTRY
#undef GLFW_APIENTRY_DEFINED
#endif
#include <windows.h>
#elif defined(GLFW_EXPOSE_NATIVE_COCOA) || defined(GLFW_EXPOSE_NATIVE_NSGL)
#if defined(__OBJC__)
#import <Cocoa/Cocoa.h>
#else
#include <ApplicationServices/ApplicationServices.h>
typedef void* id;
#endif
#elif defined(GLFW_EXPOSE_NATIVE_X11) || defined(GLFW_EXPOSE_NATIVE_GLX)
#include <X11/Xlib.h>
#include <X11/extensions/Xrandr.h>
#elif defined(GLFW_EXPOSE_NATIVE_WAYLAND)
#include <wayland-client.h>
#endif
#if defined(GLFW_EXPOSE_NATIVE_WGL)
/* WGL is declared by windows.h */
#endif
#if defined(GLFW_EXPOSE_NATIVE_NSGL)
/* NSGL is declared by Cocoa.h */
#endif
#if defined(GLFW_EXPOSE_NATIVE_GLX)
#include <GL/glx.h>
#endif
#if defined(GLFW_EXPOSE_NATIVE_EGL)
#include <EGL/egl.h>
#endif
#if defined(GLFW_EXPOSE_NATIVE_OSMESA)
#include <GL/osmesa.h>
#endif
/*************************************************************************
* Functions
*************************************************************************/
#if defined(GLFW_EXPOSE_NATIVE_WIN32)
/*! @brief Returns the adapter device name of the specified monitor.
*
* @return The UTF-8 encoded adapter device name (for example `\\.\DISPLAY1`)
* of the specified monitor, or `NULL` if an [error](@ref error_handling)
* occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.1.
*
* @ingroup native
*/
GLFWAPI const char* glfwGetWin32Adapter(GLFWmonitor* monitor);
/*! @brief Returns the display device name of the specified monitor.
*
* @return The UTF-8 encoded display device name (for example
* `\\.\DISPLAY1\Monitor0`) of the specified monitor, or `NULL` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.1.
*
* @ingroup native
*/
GLFWAPI const char* glfwGetWin32Monitor(GLFWmonitor* monitor);
/*! @brief Returns the `HWND` of the specified window.
*
* @return The `HWND` of the specified window, or `NULL` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.0.
*
* @ingroup native
*/
GLFWAPI HWND glfwGetWin32Window(GLFWwindow* window);
#endif
#if defined(GLFW_EXPOSE_NATIVE_WGL)
/*! @brief Returns the `HGLRC` of the specified window.
*
* @return The `HGLRC` of the specified window, or `NULL` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.0.
*
* @ingroup native
*/
GLFWAPI HGLRC glfwGetWGLContext(GLFWwindow* window);
#endif
#if defined(GLFW_EXPOSE_NATIVE_COCOA)
/*! @brief Returns the `CGDirectDisplayID` of the specified monitor.
*
* @return The `CGDirectDisplayID` of the specified monitor, or
* `kCGNullDirectDisplay` if an [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.1.
*
* @ingroup native
*/
GLFWAPI CGDirectDisplayID glfwGetCocoaMonitor(GLFWmonitor* monitor);
/*! @brief Returns the `NSWindow` of the specified window.
*
* @return The `NSWindow` of the specified window, or `nil` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.0.
*
* @ingroup native
*/
GLFWAPI id glfwGetCocoaWindow(GLFWwindow* window);
#endif
#if defined(GLFW_EXPOSE_NATIVE_NSGL)
/*! @brief Returns the `NSOpenGLContext` of the specified window.
*
* @return The `NSOpenGLContext` of the specified window, or `nil` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.0.
*
* @ingroup native
*/
GLFWAPI id glfwGetNSGLContext(GLFWwindow* window);
#endif
#if defined(GLFW_EXPOSE_NATIVE_X11)
/*! @brief Returns the `Display` used by GLFW.
*
* @return The `Display` used by GLFW, or `NULL` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.0.
*
* @ingroup native
*/
GLFWAPI Display* glfwGetX11Display(void);
/*! @brief Returns the `RRCrtc` of the specified monitor.
*
* @return The `RRCrtc` of the specified monitor, or `None` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.1.
*
* @ingroup native
*/
GLFWAPI RRCrtc glfwGetX11Adapter(GLFWmonitor* monitor);
/*! @brief Returns the `RROutput` of the specified monitor.
*
* @return The `RROutput` of the specified monitor, or `None` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.1.
*
* @ingroup native
*/
GLFWAPI RROutput glfwGetX11Monitor(GLFWmonitor* monitor);
/*! @brief Returns the `Window` of the specified window.
*
* @return The `Window` of the specified window, or `None` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.0.
*
* @ingroup native
*/
GLFWAPI Window glfwGetX11Window(GLFWwindow* window);
/*! @brief Sets the current primary selection to the specified string.
*
* @param[in] string A UTF-8 encoded string.
*
* @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
* GLFW_PLATFORM_ERROR.
*
* @pointer_lifetime The specified string is copied before this function
* returns.
*
* @thread_safety This function must only be called from the main thread.
*
* @sa @ref clipboard
* @sa glfwGetX11SelectionString
* @sa glfwSetClipboardString
*
* @since Added in version 3.3.
*
* @ingroup native
*/
GLFWAPI void glfwSetX11SelectionString(const char* string);
/*! @brief Returns the contents of the current primary selection as a string.
*
* If the selection is empty or if its contents cannot be converted, `NULL`
* is returned and a @ref GLFW_FORMAT_UNAVAILABLE error is generated.
*
* @return The contents of the selection as a UTF-8 encoded string, or `NULL`
* if an [error](@ref error_handling) occurred.
*
* @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
* GLFW_PLATFORM_ERROR.
*
* @pointer_lifetime The returned string is allocated and freed by GLFW. You
* should not free it yourself. It is valid until the next call to @ref
* glfwGetX11SelectionString or @ref glfwSetX11SelectionString, or until the
* library is terminated.
*
* @thread_safety This function must only be called from the main thread.
*
* @sa @ref clipboard
* @sa glfwSetX11SelectionString
* @sa glfwGetClipboardString
*
* @since Added in version 3.3.
*
* @ingroup native
*/
GLFWAPI const char* glfwGetX11SelectionString(void);
#endif
#if defined(GLFW_EXPOSE_NATIVE_GLX)
/*! @brief Returns the `GLXContext` of the specified window.
*
* @return The `GLXContext` of the specified window, or `NULL` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.0.
*
* @ingroup native
*/
GLFWAPI GLXContext glfwGetGLXContext(GLFWwindow* window);
/*! @brief Returns the `GLXWindow` of the specified window.
*
* @return The `GLXWindow` of the specified window, or `None` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.2.
*
* @ingroup native
*/
GLFWAPI GLXWindow glfwGetGLXWindow(GLFWwindow* window);
#endif
#if defined(GLFW_EXPOSE_NATIVE_WAYLAND)
/*! @brief Returns the `struct wl_display*` used by GLFW.
*
* @return The `struct wl_display*` used by GLFW, or `NULL` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.2.
*
* @ingroup native
*/
GLFWAPI struct wl_display* glfwGetWaylandDisplay(void);
/*! @brief Returns the `struct wl_output*` of the specified monitor.
*
* @return The `struct wl_output*` of the specified monitor, or `NULL` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.2.
*
* @ingroup native
*/
GLFWAPI struct wl_output* glfwGetWaylandMonitor(GLFWmonitor* monitor);
/*! @brief Returns the main `struct wl_surface*` of the specified window.
*
* @return The main `struct wl_surface*` of the specified window, or `NULL` if
* an [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.2.
*
* @ingroup native
*/
GLFWAPI struct wl_surface* glfwGetWaylandWindow(GLFWwindow* window);
#endif
#if defined(GLFW_EXPOSE_NATIVE_EGL)
/*! @brief Returns the `EGLDisplay` used by GLFW.
*
* @return The `EGLDisplay` used by GLFW, or `EGL_NO_DISPLAY` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.0.
*
* @ingroup native
*/
GLFWAPI EGLDisplay glfwGetEGLDisplay(void);
/*! @brief Returns the `EGLContext` of the specified window.
*
* @return The `EGLContext` of the specified window, or `EGL_NO_CONTEXT` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.0.
*
* @ingroup native
*/
GLFWAPI EGLContext glfwGetEGLContext(GLFWwindow* window);
/*! @brief Returns the `EGLSurface` of the specified window.
*
* @return The `EGLSurface` of the specified window, or `EGL_NO_SURFACE` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.0.
*
* @ingroup native
*/
GLFWAPI EGLSurface glfwGetEGLSurface(GLFWwindow* window);
#endif
#if defined(GLFW_EXPOSE_NATIVE_OSMESA)
/*! @brief Retrieves the color buffer associated with the specified window.
*
* @param[in] window The window whose color buffer to retrieve.
* @param[out] width Where to store the width of the color buffer, or `NULL`.
* @param[out] height Where to store the height of the color buffer, or `NULL`.
* @param[out] format Where to store the OSMesa pixel format of the color
* buffer, or `NULL`.
* @param[out] buffer Where to store the address of the color buffer, or
* `NULL`.
* @return `GLFW_TRUE` if successful, or `GLFW_FALSE` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.3.
*
* @ingroup native
*/
GLFWAPI int glfwGetOSMesaColorBuffer(GLFWwindow* window, int* width, int* height, int* format, void** buffer);
/*! @brief Retrieves the depth buffer associated with the specified window.
*
* @param[in] window The window whose depth buffer to retrieve.
* @param[out] width Where to store the width of the depth buffer, or `NULL`.
* @param[out] height Where to store the height of the depth buffer, or `NULL`.
* @param[out] bytesPerValue Where to store the number of bytes per depth
* buffer element, or `NULL`.
* @param[out] buffer Where to store the address of the depth buffer, or
* `NULL`.
* @return `GLFW_TRUE` if successful, or `GLFW_FALSE` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.3.
*
* @ingroup native
*/
GLFWAPI int glfwGetOSMesaDepthBuffer(GLFWwindow* window, int* width, int* height, int* bytesPerValue, void** buffer);
/*! @brief Returns the `OSMesaContext` of the specified window.
*
* @return The `OSMesaContext` of the specified window, or `NULL` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.3.
*
* @ingroup native
*/
GLFWAPI OSMesaContext glfwGetOSMesaContext(GLFWwindow* window);
#endif
#ifdef __cplusplus
}
#endif
#endif /* _glfw3_native_h_ */

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set(common_HEADERS internal.h mappings.h
"${GLFW_BINARY_DIR}/src/glfw_config.h"
"${GLFW_SOURCE_DIR}/include/GLFW/glfw3.h"
"${GLFW_SOURCE_DIR}/include/GLFW/glfw3native.h")
set(common_SOURCES context.c init.c input.c monitor.c vulkan.c window.c)
if (_GLFW_COCOA)
set(glfw_HEADERS ${common_HEADERS} cocoa_platform.h cocoa_joystick.h
posix_thread.h nsgl_context.h egl_context.h osmesa_context.h)
set(glfw_SOURCES ${common_SOURCES} cocoa_init.m cocoa_joystick.m
cocoa_monitor.m cocoa_window.m cocoa_time.c posix_thread.c
nsgl_context.m egl_context.c osmesa_context.c)
elseif (_GLFW_WIN32)
set(glfw_HEADERS ${common_HEADERS} win32_platform.h win32_joystick.h
wgl_context.h egl_context.h osmesa_context.h)
set(glfw_SOURCES ${common_SOURCES} win32_init.c win32_joystick.c
win32_monitor.c win32_time.c win32_thread.c win32_window.c
wgl_context.c egl_context.c osmesa_context.c)
elseif (_GLFW_X11)
set(glfw_HEADERS ${common_HEADERS} x11_platform.h xkb_unicode.h posix_time.h
posix_thread.h glx_context.h egl_context.h osmesa_context.h)
set(glfw_SOURCES ${common_SOURCES} x11_init.c x11_monitor.c x11_window.c
xkb_unicode.c posix_time.c posix_thread.c glx_context.c
egl_context.c osmesa_context.c)
elseif (_GLFW_WAYLAND)
set(glfw_HEADERS ${common_HEADERS} wl_platform.h
posix_time.h posix_thread.h xkb_unicode.h egl_context.h
osmesa_context.h)
set(glfw_SOURCES ${common_SOURCES} wl_init.c wl_monitor.c wl_window.c
posix_time.c posix_thread.c xkb_unicode.c
egl_context.c osmesa_context.c)
ecm_add_wayland_client_protocol(glfw_SOURCES
PROTOCOL
"${WAYLAND_PROTOCOLS_PKGDATADIR}/stable/xdg-shell/xdg-shell.xml"
BASENAME xdg-shell)
ecm_add_wayland_client_protocol(glfw_SOURCES
PROTOCOL
"${WAYLAND_PROTOCOLS_PKGDATADIR}/unstable/xdg-decoration/xdg-decoration-unstable-v1.xml"
BASENAME xdg-decoration)
ecm_add_wayland_client_protocol(glfw_SOURCES
PROTOCOL
"${WAYLAND_PROTOCOLS_PKGDATADIR}/stable/viewporter/viewporter.xml"
BASENAME viewporter)
ecm_add_wayland_client_protocol(glfw_SOURCES
PROTOCOL
"${WAYLAND_PROTOCOLS_PKGDATADIR}/unstable/relative-pointer/relative-pointer-unstable-v1.xml"
BASENAME relative-pointer-unstable-v1)
ecm_add_wayland_client_protocol(glfw_SOURCES
PROTOCOL
"${WAYLAND_PROTOCOLS_PKGDATADIR}/unstable/pointer-constraints/pointer-constraints-unstable-v1.xml"
BASENAME pointer-constraints-unstable-v1)
ecm_add_wayland_client_protocol(glfw_SOURCES
PROTOCOL
"${WAYLAND_PROTOCOLS_PKGDATADIR}/unstable/idle-inhibit/idle-inhibit-unstable-v1.xml"
BASENAME idle-inhibit-unstable-v1)
elseif (_GLFW_OSMESA)
set(glfw_HEADERS ${common_HEADERS} null_platform.h null_joystick.h
posix_time.h posix_thread.h osmesa_context.h)
set(glfw_SOURCES ${common_SOURCES} null_init.c null_monitor.c null_window.c
null_joystick.c posix_time.c posix_thread.c osmesa_context.c)
endif()
if (_GLFW_X11 OR _GLFW_WAYLAND)
if ("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux")
set(glfw_HEADERS ${glfw_HEADERS} linux_joystick.h)
set(glfw_SOURCES ${glfw_SOURCES} linux_joystick.c)
else()
set(glfw_HEADERS ${glfw_HEADERS} null_joystick.h)
set(glfw_SOURCES ${glfw_SOURCES} null_joystick.c)
endif()
endif()
if (APPLE)
# For some reason, CMake doesn't know about .m
set_source_files_properties(${glfw_SOURCES} PROPERTIES LANGUAGE C)
endif()
# Make GCC and Clang warn about declarations that VS 2010 and 2012 won't accept
# for all source files that VS will build
if ("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR
"${CMAKE_C_COMPILER_ID}" STREQUAL "Clang" OR
"${CMAKE_C_COMPILER_ID}" STREQUAL "AppleClang")
if (WIN32)
set(windows_SOURCES ${glfw_SOURCES})
else()
set(windows_SOURCES ${common_SOURCES})
endif()
set_source_files_properties(${windows_SOURCES} PROPERTIES
COMPILE_FLAGS -Wdeclaration-after-statement)
endif()
# wenzel: changes begin
add_library(glfw_objects OBJECT ${glfw_SOURCES} ${glfw_HEADERS})
add_library(glfw $<TARGET_OBJECTS:glfw_objects>)
if (BUILD_SHARED_LIBS)
set_target_properties(glfw_objects PROPERTIES POSITION_INDEPENDENT_CODE ON)
endif()
set_target_properties(glfw PROPERTIES
OUTPUT_NAME ${GLFW_LIB_NAME}
# VERSION ${GLFW_VERSION}
# SOVERSION ${GLFW_VERSION_MAJOR}
)
# wenzel : changes end
if (BUILD_SHARED_LIBS)
set_target_properties(glfw PROPERTIES POSITION_INDEPENDENT_CODE ON
LIBRARY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
endif()
# wenzel: changes begin
target_include_directories(glfw PUBLIC
"$<BUILD_INTERFACE:${GLFW_SOURCE_DIR}/include>"
"$<INSTALL_INTERFACE:${CMAKE_INSTALL_FULL_INCLUDEDIR}>")
target_include_directories(glfw_objects PUBLIC
"$<BUILD_INTERFACE:${GLFW_SOURCE_DIR}/include>"
"$<INSTALL_INTERFACE:${CMAKE_INSTALL_FULL_INCLUDEDIR}>")
target_compile_definitions(glfw_objects PRIVATE _GLFW_USE_CONFIG_H)
target_include_directories(glfw_objects PRIVATE
"${GLFW_SOURCE_DIR}/src"
"${GLFW_BINARY_DIR}/src"
${glfw_INCLUDE_DIRS})
# HACK: When building on MinGW, WINVER and UNICODE need to be defined before
# the inclusion of stddef.h (by glfw3.h), which is itself included before
# win32_platform.h. We define them here until a saner solution can be found
# NOTE: MinGW-w64 and Visual C++ do /not/ need this hack.
target_compile_definitions(glfw_objects PRIVATE
"$<$<BOOL:${MINGW}>:UNICODE;WINVER=0x0501>")
# Enable a reasonable set of warnings (no, -Wextra is not reasonable)
target_compile_options(glfw_objects PRIVATE
"$<$<C_COMPILER_ID:Clang>:-Wall>"
"$<$<C_COMPILER_ID:Clang>:-Wno-deprecated-declarations>"
"$<$<C_COMPILER_ID:GNU>:-Wall>")
# wenzel: changes end
if (BUILD_SHARED_LIBS)
if (WIN32)
if (MINGW)
# Remove the lib prefix on the DLL (but not the import library)
set_target_properties(glfw PROPERTIES PREFIX "")
# Add a suffix to the import library to avoid naming conflicts
set_target_properties(glfw PROPERTIES IMPORT_SUFFIX "dll.a")
else()
# Add a suffix to the import library to avoid naming conflicts
set_target_properties(glfw PROPERTIES IMPORT_SUFFIX "dll.lib")
endif()
elseif (APPLE)
# Add -fno-common to work around a bug in Apple's GCC
# wenzel : changes begin
target_compile_options(glfw_objects PRIVATE "-fno-common")
set_target_properties(glfw PROPERTIES
INSTALL_NAME_DIR "${CMAKE_INSTALL_LIBDIR}")
# wenzel : changes end
elseif (UNIX)
# Hide symbols not explicitly tagged for export from the shared library
# wenzel : changes begin
target_compile_options(glfw_objects PRIVATE "-fvisibility=hidden")
# wenzel: changes end
endif()
target_compile_definitions(glfw INTERFACE GLFW_DLL)
target_link_libraries(glfw PRIVATE ${glfw_LIBRARIES})
else()
target_link_libraries(glfw INTERFACE ${glfw_LIBRARIES})
endif()
if (MSVC)
# wenzel: changes begin
target_compile_definitions(glfw_objects PRIVATE _CRT_SECURE_NO_WARNINGS)
# wenzel: changes end
endif()
if (GLFW_INSTALL)
install(TARGETS glfw
EXPORT glfwTargets
RUNTIME DESTINATION "bin"
ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}")
endif()

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//========================================================================
// GLFW 3.3 macOS - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2009-2019 Camilla Löwy <elmindreda@glfw.org>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
#include "internal.h"
#include <sys/param.h> // For MAXPATHLEN
// Needed for _NSGetProgname
#include <crt_externs.h>
// Change to our application bundle's resources directory, if present
//
static void changeToResourcesDirectory(void)
{
char resourcesPath[MAXPATHLEN];
CFBundleRef bundle = CFBundleGetMainBundle();
if (!bundle)
return;
CFURLRef resourcesURL = CFBundleCopyResourcesDirectoryURL(bundle);
CFStringRef last = CFURLCopyLastPathComponent(resourcesURL);
if (CFStringCompare(CFSTR("Resources"), last, 0) != kCFCompareEqualTo)
{
CFRelease(last);
CFRelease(resourcesURL);
return;
}
CFRelease(last);
if (!CFURLGetFileSystemRepresentation(resourcesURL,
true,
(UInt8*) resourcesPath,
MAXPATHLEN))
{
CFRelease(resourcesURL);
return;
}
CFRelease(resourcesURL);
chdir(resourcesPath);
}
// Set up the menu bar (manually)
// This is nasty, nasty stuff -- calls to undocumented semi-private APIs that
// could go away at any moment, lots of stuff that really should be
// localize(d|able), etc. Add a nib to save us this horror.
//
static void createMenuBar(void)
{
size_t i;
NSString* appName = nil;
NSDictionary* bundleInfo = [[NSBundle mainBundle] infoDictionary];
NSString* nameKeys[] =
{
@"CFBundleDisplayName",
@"CFBundleName",
@"CFBundleExecutable",
};
// Try to figure out what the calling application is called
for (i = 0; i < sizeof(nameKeys) / sizeof(nameKeys[0]); i++)
{
id name = bundleInfo[nameKeys[i]];
if (name &&
[name isKindOfClass:[NSString class]] &&
![name isEqualToString:@""])
{
appName = name;
break;
}
}
if (!appName)
{
char** progname = _NSGetProgname();
if (progname && *progname)
appName = @(*progname);
else
appName = @"GLFW Application";
}
NSMenu* bar = [[NSMenu alloc] init];
[NSApp setMainMenu:bar];
NSMenuItem* appMenuItem =
[bar addItemWithTitle:@"" action:NULL keyEquivalent:@""];
NSMenu* appMenu = [[NSMenu alloc] init];
[appMenuItem setSubmenu:appMenu];
[appMenu addItemWithTitle:[NSString stringWithFormat:@"About %@", appName]
action:@selector(orderFrontStandardAboutPanel:)
keyEquivalent:@""];
[appMenu addItem:[NSMenuItem separatorItem]];
NSMenu* servicesMenu = [[NSMenu alloc] init];
[NSApp setServicesMenu:servicesMenu];
[[appMenu addItemWithTitle:@"Services"
action:NULL
keyEquivalent:@""] setSubmenu:servicesMenu];
[servicesMenu release];
[appMenu addItem:[NSMenuItem separatorItem]];
[appMenu addItemWithTitle:[NSString stringWithFormat:@"Hide %@", appName]
action:@selector(hide:)
keyEquivalent:@"h"];
[[appMenu addItemWithTitle:@"Hide Others"
action:@selector(hideOtherApplications:)
keyEquivalent:@"h"]
setKeyEquivalentModifierMask:NSEventModifierFlagOption | NSEventModifierFlagCommand];
[appMenu addItemWithTitle:@"Show All"
action:@selector(unhideAllApplications:)
keyEquivalent:@""];
[appMenu addItem:[NSMenuItem separatorItem]];
[appMenu addItemWithTitle:[NSString stringWithFormat:@"Quit %@", appName]
action:@selector(terminate:)
keyEquivalent:@"q"];
NSMenuItem* windowMenuItem =
[bar addItemWithTitle:@"" action:NULL keyEquivalent:@""];
[bar release];
NSMenu* windowMenu = [[NSMenu alloc] initWithTitle:@"Window"];
[NSApp setWindowsMenu:windowMenu];
[windowMenuItem setSubmenu:windowMenu];
[windowMenu addItemWithTitle:@"Minimize"
action:@selector(performMiniaturize:)
keyEquivalent:@"m"];
[windowMenu addItemWithTitle:@"Zoom"
action:@selector(performZoom:)
keyEquivalent:@""];
[windowMenu addItem:[NSMenuItem separatorItem]];
[windowMenu addItemWithTitle:@"Bring All to Front"
action:@selector(arrangeInFront:)
keyEquivalent:@""];
// TODO: Make this appear at the bottom of the menu (for consistency)
[windowMenu addItem:[NSMenuItem separatorItem]];
[[windowMenu addItemWithTitle:@"Enter Full Screen"
action:@selector(toggleFullScreen:)
keyEquivalent:@"f"]
setKeyEquivalentModifierMask:NSEventModifierFlagControl | NSEventModifierFlagCommand];
// Prior to Snow Leopard, we need to use this oddly-named semi-private API
// to get the application menu working properly.
SEL setAppleMenuSelector = NSSelectorFromString(@"setAppleMenu:");
[NSApp performSelector:setAppleMenuSelector withObject:appMenu];
}
// Create key code translation tables
//
static void createKeyTables(void)
{
int scancode;
memset(_glfw.ns.keycodes, -1, sizeof(_glfw.ns.keycodes));
memset(_glfw.ns.scancodes, -1, sizeof(_glfw.ns.scancodes));
_glfw.ns.keycodes[0x1D] = GLFW_KEY_0;
_glfw.ns.keycodes[0x12] = GLFW_KEY_1;
_glfw.ns.keycodes[0x13] = GLFW_KEY_2;
_glfw.ns.keycodes[0x14] = GLFW_KEY_3;
_glfw.ns.keycodes[0x15] = GLFW_KEY_4;
_glfw.ns.keycodes[0x17] = GLFW_KEY_5;
_glfw.ns.keycodes[0x16] = GLFW_KEY_6;
_glfw.ns.keycodes[0x1A] = GLFW_KEY_7;
_glfw.ns.keycodes[0x1C] = GLFW_KEY_8;
_glfw.ns.keycodes[0x19] = GLFW_KEY_9;
_glfw.ns.keycodes[0x00] = GLFW_KEY_A;
_glfw.ns.keycodes[0x0B] = GLFW_KEY_B;
_glfw.ns.keycodes[0x08] = GLFW_KEY_C;
_glfw.ns.keycodes[0x02] = GLFW_KEY_D;
_glfw.ns.keycodes[0x0E] = GLFW_KEY_E;
_glfw.ns.keycodes[0x03] = GLFW_KEY_F;
_glfw.ns.keycodes[0x05] = GLFW_KEY_G;
_glfw.ns.keycodes[0x04] = GLFW_KEY_H;
_glfw.ns.keycodes[0x22] = GLFW_KEY_I;
_glfw.ns.keycodes[0x26] = GLFW_KEY_J;
_glfw.ns.keycodes[0x28] = GLFW_KEY_K;
_glfw.ns.keycodes[0x25] = GLFW_KEY_L;
_glfw.ns.keycodes[0x2E] = GLFW_KEY_M;
_glfw.ns.keycodes[0x2D] = GLFW_KEY_N;
_glfw.ns.keycodes[0x1F] = GLFW_KEY_O;
_glfw.ns.keycodes[0x23] = GLFW_KEY_P;
_glfw.ns.keycodes[0x0C] = GLFW_KEY_Q;
_glfw.ns.keycodes[0x0F] = GLFW_KEY_R;
_glfw.ns.keycodes[0x01] = GLFW_KEY_S;
_glfw.ns.keycodes[0x11] = GLFW_KEY_T;
_glfw.ns.keycodes[0x20] = GLFW_KEY_U;
_glfw.ns.keycodes[0x09] = GLFW_KEY_V;
_glfw.ns.keycodes[0x0D] = GLFW_KEY_W;
_glfw.ns.keycodes[0x07] = GLFW_KEY_X;
_glfw.ns.keycodes[0x10] = GLFW_KEY_Y;
_glfw.ns.keycodes[0x06] = GLFW_KEY_Z;
_glfw.ns.keycodes[0x27] = GLFW_KEY_APOSTROPHE;
_glfw.ns.keycodes[0x2A] = GLFW_KEY_BACKSLASH;
_glfw.ns.keycodes[0x2B] = GLFW_KEY_COMMA;
_glfw.ns.keycodes[0x18] = GLFW_KEY_EQUAL;
_glfw.ns.keycodes[0x32] = GLFW_KEY_GRAVE_ACCENT;
_glfw.ns.keycodes[0x21] = GLFW_KEY_LEFT_BRACKET;
_glfw.ns.keycodes[0x1B] = GLFW_KEY_MINUS;
_glfw.ns.keycodes[0x2F] = GLFW_KEY_PERIOD;
_glfw.ns.keycodes[0x1E] = GLFW_KEY_RIGHT_BRACKET;
_glfw.ns.keycodes[0x29] = GLFW_KEY_SEMICOLON;
_glfw.ns.keycodes[0x2C] = GLFW_KEY_SLASH;
_glfw.ns.keycodes[0x0A] = GLFW_KEY_WORLD_1;
_glfw.ns.keycodes[0x33] = GLFW_KEY_BACKSPACE;
_glfw.ns.keycodes[0x39] = GLFW_KEY_CAPS_LOCK;
_glfw.ns.keycodes[0x75] = GLFW_KEY_DELETE;
_glfw.ns.keycodes[0x7D] = GLFW_KEY_DOWN;
_glfw.ns.keycodes[0x77] = GLFW_KEY_END;
_glfw.ns.keycodes[0x24] = GLFW_KEY_ENTER;
_glfw.ns.keycodes[0x35] = GLFW_KEY_ESCAPE;
_glfw.ns.keycodes[0x7A] = GLFW_KEY_F1;
_glfw.ns.keycodes[0x78] = GLFW_KEY_F2;
_glfw.ns.keycodes[0x63] = GLFW_KEY_F3;
_glfw.ns.keycodes[0x76] = GLFW_KEY_F4;
_glfw.ns.keycodes[0x60] = GLFW_KEY_F5;
_glfw.ns.keycodes[0x61] = GLFW_KEY_F6;
_glfw.ns.keycodes[0x62] = GLFW_KEY_F7;
_glfw.ns.keycodes[0x64] = GLFW_KEY_F8;
_glfw.ns.keycodes[0x65] = GLFW_KEY_F9;
_glfw.ns.keycodes[0x6D] = GLFW_KEY_F10;
_glfw.ns.keycodes[0x67] = GLFW_KEY_F11;
_glfw.ns.keycodes[0x6F] = GLFW_KEY_F12;
_glfw.ns.keycodes[0x69] = GLFW_KEY_F13;
_glfw.ns.keycodes[0x6B] = GLFW_KEY_F14;
_glfw.ns.keycodes[0x71] = GLFW_KEY_F15;
_glfw.ns.keycodes[0x6A] = GLFW_KEY_F16;
_glfw.ns.keycodes[0x40] = GLFW_KEY_F17;
_glfw.ns.keycodes[0x4F] = GLFW_KEY_F18;
_glfw.ns.keycodes[0x50] = GLFW_KEY_F19;
_glfw.ns.keycodes[0x5A] = GLFW_KEY_F20;
_glfw.ns.keycodes[0x73] = GLFW_KEY_HOME;
_glfw.ns.keycodes[0x72] = GLFW_KEY_INSERT;
_glfw.ns.keycodes[0x7B] = GLFW_KEY_LEFT;
_glfw.ns.keycodes[0x3A] = GLFW_KEY_LEFT_ALT;
_glfw.ns.keycodes[0x3B] = GLFW_KEY_LEFT_CONTROL;
_glfw.ns.keycodes[0x38] = GLFW_KEY_LEFT_SHIFT;
_glfw.ns.keycodes[0x37] = GLFW_KEY_LEFT_SUPER;
_glfw.ns.keycodes[0x6E] = GLFW_KEY_MENU;
_glfw.ns.keycodes[0x47] = GLFW_KEY_NUM_LOCK;
_glfw.ns.keycodes[0x79] = GLFW_KEY_PAGE_DOWN;
_glfw.ns.keycodes[0x74] = GLFW_KEY_PAGE_UP;
_glfw.ns.keycodes[0x7C] = GLFW_KEY_RIGHT;
_glfw.ns.keycodes[0x3D] = GLFW_KEY_RIGHT_ALT;
_glfw.ns.keycodes[0x3E] = GLFW_KEY_RIGHT_CONTROL;
_glfw.ns.keycodes[0x3C] = GLFW_KEY_RIGHT_SHIFT;
_glfw.ns.keycodes[0x36] = GLFW_KEY_RIGHT_SUPER;
_glfw.ns.keycodes[0x31] = GLFW_KEY_SPACE;
_glfw.ns.keycodes[0x30] = GLFW_KEY_TAB;
_glfw.ns.keycodes[0x7E] = GLFW_KEY_UP;
_glfw.ns.keycodes[0x52] = GLFW_KEY_KP_0;
_glfw.ns.keycodes[0x53] = GLFW_KEY_KP_1;
_glfw.ns.keycodes[0x54] = GLFW_KEY_KP_2;
_glfw.ns.keycodes[0x55] = GLFW_KEY_KP_3;
_glfw.ns.keycodes[0x56] = GLFW_KEY_KP_4;
_glfw.ns.keycodes[0x57] = GLFW_KEY_KP_5;
_glfw.ns.keycodes[0x58] = GLFW_KEY_KP_6;
_glfw.ns.keycodes[0x59] = GLFW_KEY_KP_7;
_glfw.ns.keycodes[0x5B] = GLFW_KEY_KP_8;
_glfw.ns.keycodes[0x5C] = GLFW_KEY_KP_9;
_glfw.ns.keycodes[0x45] = GLFW_KEY_KP_ADD;
_glfw.ns.keycodes[0x41] = GLFW_KEY_KP_DECIMAL;
_glfw.ns.keycodes[0x4B] = GLFW_KEY_KP_DIVIDE;
_glfw.ns.keycodes[0x4C] = GLFW_KEY_KP_ENTER;
_glfw.ns.keycodes[0x51] = GLFW_KEY_KP_EQUAL;
_glfw.ns.keycodes[0x43] = GLFW_KEY_KP_MULTIPLY;
_glfw.ns.keycodes[0x4E] = GLFW_KEY_KP_SUBTRACT;
for (scancode = 0; scancode < 256; scancode++)
{
// Store the reverse translation for faster key name lookup
if (_glfw.ns.keycodes[scancode] >= 0)
_glfw.ns.scancodes[_glfw.ns.keycodes[scancode]] = scancode;
}
}
// Retrieve Unicode data for the current keyboard layout
//
static GLFWbool updateUnicodeDataNS(void)
{
if (_glfw.ns.inputSource)
{
CFRelease(_glfw.ns.inputSource);
_glfw.ns.inputSource = NULL;
_glfw.ns.unicodeData = nil;
}
_glfw.ns.inputSource = TISCopyCurrentKeyboardLayoutInputSource();
if (!_glfw.ns.inputSource)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Cocoa: Failed to retrieve keyboard layout input source");
return GLFW_FALSE;
}
_glfw.ns.unicodeData =
TISGetInputSourceProperty(_glfw.ns.inputSource,
kTISPropertyUnicodeKeyLayoutData);
if (!_glfw.ns.unicodeData)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Cocoa: Failed to retrieve keyboard layout Unicode data");
return GLFW_FALSE;
}
return GLFW_TRUE;
}
// Load HIToolbox.framework and the TIS symbols we need from it
//
static GLFWbool initializeTIS(void)
{
// This works only because Cocoa has already loaded it properly
_glfw.ns.tis.bundle =
CFBundleGetBundleWithIdentifier(CFSTR("com.apple.HIToolbox"));
if (!_glfw.ns.tis.bundle)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Cocoa: Failed to load HIToolbox.framework");
return GLFW_FALSE;
}
CFStringRef* kPropertyUnicodeKeyLayoutData =
CFBundleGetDataPointerForName(_glfw.ns.tis.bundle,
CFSTR("kTISPropertyUnicodeKeyLayoutData"));
_glfw.ns.tis.CopyCurrentKeyboardLayoutInputSource =
CFBundleGetFunctionPointerForName(_glfw.ns.tis.bundle,
CFSTR("TISCopyCurrentKeyboardLayoutInputSource"));
_glfw.ns.tis.GetInputSourceProperty =
CFBundleGetFunctionPointerForName(_glfw.ns.tis.bundle,
CFSTR("TISGetInputSourceProperty"));
_glfw.ns.tis.GetKbdType =
CFBundleGetFunctionPointerForName(_glfw.ns.tis.bundle,
CFSTR("LMGetKbdType"));
if (!kPropertyUnicodeKeyLayoutData ||
!TISCopyCurrentKeyboardLayoutInputSource ||
!TISGetInputSourceProperty ||
!LMGetKbdType)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Cocoa: Failed to load TIS API symbols");
return GLFW_FALSE;
}
_glfw.ns.tis.kPropertyUnicodeKeyLayoutData =
*kPropertyUnicodeKeyLayoutData;
return updateUnicodeDataNS();
}
@interface GLFWHelper : NSObject
@end
@implementation GLFWHelper
- (void)selectedKeyboardInputSourceChanged:(NSObject* )object
{
updateUnicodeDataNS();
}
- (void)doNothing:(id)object
{
}
@end // GLFWHelper
@interface GLFWApplicationDelegate : NSObject <NSApplicationDelegate>
@end
@implementation GLFWApplicationDelegate
- (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender
{
_GLFWwindow* window;
for (window = _glfw.windowListHead; window; window = window->next)
_glfwInputWindowCloseRequest(window);
return NSTerminateCancel;
}
- (void)applicationDidChangeScreenParameters:(NSNotification *) notification
{
_GLFWwindow* window;
for (window = _glfw.windowListHead; window; window = window->next)
{
if (window->context.client != GLFW_NO_API)
[window->context.nsgl.object update];
}
_glfwPollMonitorsNS();
}
- (void)applicationWillFinishLaunching:(NSNotification *)notification
{
if (_glfw.hints.init.ns.menubar)
{
// In case we are unbundled, make us a proper UI application
[NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];
// Menu bar setup must go between sharedApplication above and
// finishLaunching below, in order to properly emulate the behavior
// of NSApplicationMain
if ([[NSBundle mainBundle] pathForResource:@"MainMenu" ofType:@"nib"])
{
[[NSBundle mainBundle] loadNibNamed:@"MainMenu"
owner:NSApp
topLevelObjects:&_glfw.ns.nibObjects];
}
else
createMenuBar();
}
}
- (void)applicationDidFinishLaunching:(NSNotification *)notification
{
[NSApp stop:nil];
_glfwPlatformPostEmptyEvent();
}
- (void)applicationDidHide:(NSNotification *)notification
{
int i;
for (i = 0; i < _glfw.monitorCount; i++)
_glfwRestoreVideoModeNS(_glfw.monitors[i]);
}
@end // GLFWApplicationDelegate
//////////////////////////////////////////////////////////////////////////
////// GLFW platform API //////
//////////////////////////////////////////////////////////////////////////
int _glfwPlatformInit(void)
{
@autoreleasepool {
_glfw.ns.helper = [[GLFWHelper alloc] init];
[NSThread detachNewThreadSelector:@selector(doNothing:)
toTarget:_glfw.ns.helper
withObject:nil];
if (NSApp)
_glfw.ns.finishedLaunching = GLFW_TRUE;
[NSApplication sharedApplication];
_glfw.ns.delegate = [[GLFWApplicationDelegate alloc] init];
if (_glfw.ns.delegate == nil)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Cocoa: Failed to create application delegate");
return GLFW_FALSE;
}
[NSApp setDelegate:_glfw.ns.delegate];
NSEvent* (^block)(NSEvent*) = ^ NSEvent* (NSEvent* event)
{
if ([event modifierFlags] & NSEventModifierFlagCommand)
[[NSApp keyWindow] sendEvent:event];
return event;
};
_glfw.ns.keyUpMonitor =
[NSEvent addLocalMonitorForEventsMatchingMask:NSEventMaskKeyUp
handler:block];
if (_glfw.hints.init.ns.chdir)
changeToResourcesDirectory();
// Press and Hold prevents some keys from emitting repeated characters
NSDictionary* defaults = @{@"ApplePressAndHoldEnabled":@NO};
[[NSUserDefaults standardUserDefaults] registerDefaults:defaults];
[[NSNotificationCenter defaultCenter]
addObserver:_glfw.ns.helper
selector:@selector(selectedKeyboardInputSourceChanged:)
name:NSTextInputContextKeyboardSelectionDidChangeNotification
object:nil];
createKeyTables();
_glfw.ns.eventSource = CGEventSourceCreate(kCGEventSourceStateHIDSystemState);
if (!_glfw.ns.eventSource)
return GLFW_FALSE;
CGEventSourceSetLocalEventsSuppressionInterval(_glfw.ns.eventSource, 0.0);
if (!initializeTIS())
return GLFW_FALSE;
_glfwInitTimerNS();
_glfwInitJoysticksNS();
_glfwPollMonitorsNS();
return GLFW_TRUE;
} // autoreleasepool
}
void _glfwPlatformTerminate(void)
{
@autoreleasepool {
if (_glfw.ns.inputSource)
{
CFRelease(_glfw.ns.inputSource);
_glfw.ns.inputSource = NULL;
_glfw.ns.unicodeData = nil;
}
if (_glfw.ns.eventSource)
{
CFRelease(_glfw.ns.eventSource);
_glfw.ns.eventSource = NULL;
}
if (_glfw.ns.delegate)
{
[NSApp setDelegate:nil];
[_glfw.ns.delegate release];
_glfw.ns.delegate = nil;
}
if (_glfw.ns.helper)
{
[[NSNotificationCenter defaultCenter]
removeObserver:_glfw.ns.helper
name:NSTextInputContextKeyboardSelectionDidChangeNotification
object:nil];
[[NSNotificationCenter defaultCenter]
removeObserver:_glfw.ns.helper];
[_glfw.ns.helper release];
_glfw.ns.helper = nil;
}
if (_glfw.ns.keyUpMonitor)
[NSEvent removeMonitor:_glfw.ns.keyUpMonitor];
free(_glfw.ns.clipboardString);
_glfwTerminateNSGL();
_glfwTerminateJoysticksNS();
} // autoreleasepool
}
const char* _glfwPlatformGetVersionString(void)
{
return _GLFW_VERSION_NUMBER " Cocoa NSGL EGL OSMesa"
#if defined(_GLFW_BUILD_DLL)
" dynamic"
#endif
;
}

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//========================================================================
// GLFW 3.3 Cocoa - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2006-2017 Camilla Löwy <elmindreda@glfw.org>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
#include <IOKit/IOKitLib.h>
#include <IOKit/IOCFPlugIn.h>
#include <IOKit/hid/IOHIDLib.h>
#include <IOKit/hid/IOHIDKeys.h>
#define _GLFW_PLATFORM_JOYSTICK_STATE _GLFWjoystickNS ns
#define _GLFW_PLATFORM_LIBRARY_JOYSTICK_STATE
#define _GLFW_PLATFORM_MAPPING_NAME "Mac OS X"
// Cocoa-specific per-joystick data
//
typedef struct _GLFWjoystickNS
{
IOHIDDeviceRef device;
CFMutableArrayRef axes;
CFMutableArrayRef buttons;
CFMutableArrayRef hats;
} _GLFWjoystickNS;
void _glfwInitJoysticksNS(void);
void _glfwTerminateJoysticksNS(void);

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//========================================================================
// GLFW 3.3 Cocoa - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2009-2019 Camilla Löwy <elmindreda@glfw.org>
// Copyright (c) 2012 Torsten Walluhn <tw@mad-cad.net>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
#include "internal.h"
#include <unistd.h>
#include <ctype.h>
#include <string.h>
#include <mach/mach.h>
#include <mach/mach_error.h>
#include <CoreFoundation/CoreFoundation.h>
#include <Kernel/IOKit/hidsystem/IOHIDUsageTables.h>
// Joystick element information
//
typedef struct _GLFWjoyelementNS
{
IOHIDElementRef native;
uint32_t usage;
int index;
long minimum;
long maximum;
} _GLFWjoyelementNS;
// Returns the value of the specified element of the specified joystick
//
static long getElementValue(_GLFWjoystick* js, _GLFWjoyelementNS* element)
{
IOHIDValueRef valueRef;
long value = 0;
if (js->ns.device)
{
if (IOHIDDeviceGetValue(js->ns.device,
element->native,
&valueRef) == kIOReturnSuccess)
{
value = IOHIDValueGetIntegerValue(valueRef);
}
}
return value;
}
// Comparison function for matching the SDL element order
//
static CFComparisonResult compareElements(const void* fp,
const void* sp,
void* user)
{
const _GLFWjoyelementNS* fe = fp;
const _GLFWjoyelementNS* se = sp;
if (fe->usage < se->usage)
return kCFCompareLessThan;
if (fe->usage > se->usage)
return kCFCompareGreaterThan;
if (fe->index < se->index)
return kCFCompareLessThan;
if (fe->index > se->index)
return kCFCompareGreaterThan;
return kCFCompareEqualTo;
}
// Removes the specified joystick
//
static void closeJoystick(_GLFWjoystick* js)
{
int i;
if (!js->present)
return;
for (i = 0; i < CFArrayGetCount(js->ns.axes); i++)
free((void*) CFArrayGetValueAtIndex(js->ns.axes, i));
CFRelease(js->ns.axes);
for (i = 0; i < CFArrayGetCount(js->ns.buttons); i++)
free((void*) CFArrayGetValueAtIndex(js->ns.buttons, i));
CFRelease(js->ns.buttons);
for (i = 0; i < CFArrayGetCount(js->ns.hats); i++)
free((void*) CFArrayGetValueAtIndex(js->ns.hats, i));
CFRelease(js->ns.hats);
_glfwFreeJoystick(js);
_glfwInputJoystick(js, GLFW_DISCONNECTED);
}
// Callback for user-initiated joystick addition
//
static void matchCallback(void* context,
IOReturn result,
void* sender,
IOHIDDeviceRef device)
{
int jid;
char name[256];
char guid[33];
CFIndex i;
CFTypeRef property;
uint32_t vendor = 0, product = 0, version = 0;
_GLFWjoystick* js;
CFMutableArrayRef axes, buttons, hats;
for (jid = 0; jid <= GLFW_JOYSTICK_LAST; jid++)
{
if (_glfw.joysticks[jid].ns.device == device)
return;
}
axes = CFArrayCreateMutable(NULL, 0, NULL);
buttons = CFArrayCreateMutable(NULL, 0, NULL);
hats = CFArrayCreateMutable(NULL, 0, NULL);
property = IOHIDDeviceGetProperty(device, CFSTR(kIOHIDProductKey));
if (property)
{
CFStringGetCString(property,
name,
sizeof(name),
kCFStringEncodingUTF8);
}
else
strncpy(name, "Unknown", sizeof(name));
property = IOHIDDeviceGetProperty(device, CFSTR(kIOHIDVendorIDKey));
if (property)
CFNumberGetValue(property, kCFNumberSInt32Type, &vendor);
property = IOHIDDeviceGetProperty(device, CFSTR(kIOHIDProductIDKey));
if (property)
CFNumberGetValue(property, kCFNumberSInt32Type, &product);
property = IOHIDDeviceGetProperty(device, CFSTR(kIOHIDVersionNumberKey));
if (property)
CFNumberGetValue(property, kCFNumberSInt32Type, &version);
// Generate a joystick GUID that matches the SDL 2.0.5+ one
if (vendor && product)
{
sprintf(guid, "03000000%02x%02x0000%02x%02x0000%02x%02x0000",
(uint8_t) vendor, (uint8_t) (vendor >> 8),
(uint8_t) product, (uint8_t) (product >> 8),
(uint8_t) version, (uint8_t) (version >> 8));
}
else
{
sprintf(guid, "05000000%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x00",
name[0], name[1], name[2], name[3],
name[4], name[5], name[6], name[7],
name[8], name[9], name[10]);
}
CFArrayRef elements =
IOHIDDeviceCopyMatchingElements(device, NULL, kIOHIDOptionsTypeNone);
for (i = 0; i < CFArrayGetCount(elements); i++)
{
IOHIDElementRef native = (IOHIDElementRef)
CFArrayGetValueAtIndex(elements, i);
if (CFGetTypeID(native) != IOHIDElementGetTypeID())
continue;
const IOHIDElementType type = IOHIDElementGetType(native);
if ((type != kIOHIDElementTypeInput_Axis) &&
(type != kIOHIDElementTypeInput_Button) &&
(type != kIOHIDElementTypeInput_Misc))
{
continue;
}
CFMutableArrayRef target = NULL;
const uint32_t usage = IOHIDElementGetUsage(native);
const uint32_t page = IOHIDElementGetUsagePage(native);
if (page == kHIDPage_GenericDesktop)
{
switch (usage)
{
case kHIDUsage_GD_X:
case kHIDUsage_GD_Y:
case kHIDUsage_GD_Z:
case kHIDUsage_GD_Rx:
case kHIDUsage_GD_Ry:
case kHIDUsage_GD_Rz:
case kHIDUsage_GD_Slider:
case kHIDUsage_GD_Dial:
case kHIDUsage_GD_Wheel:
target = axes;
break;
case kHIDUsage_GD_Hatswitch:
target = hats;
break;
case kHIDUsage_GD_DPadUp:
case kHIDUsage_GD_DPadRight:
case kHIDUsage_GD_DPadDown:
case kHIDUsage_GD_DPadLeft:
case kHIDUsage_GD_SystemMainMenu:
case kHIDUsage_GD_Select:
case kHIDUsage_GD_Start:
target = buttons;
break;
}
}
else if (page == kHIDPage_Simulation)
{
switch (usage)
{
case kHIDUsage_Sim_Accelerator:
case kHIDUsage_Sim_Brake:
case kHIDUsage_Sim_Throttle:
case kHIDUsage_Sim_Rudder:
case kHIDUsage_Sim_Steering:
target = axes;
break;
}
}
else if (page == kHIDPage_Button || page == kHIDPage_Consumer)
target = buttons;
if (target)
{
_GLFWjoyelementNS* element = calloc(1, sizeof(_GLFWjoyelementNS));
element->native = native;
element->usage = usage;
element->index = (int) CFArrayGetCount(target);
element->minimum = IOHIDElementGetLogicalMin(native);
element->maximum = IOHIDElementGetLogicalMax(native);
CFArrayAppendValue(target, element);
}
}
CFRelease(elements);
CFArraySortValues(axes, CFRangeMake(0, CFArrayGetCount(axes)),
compareElements, NULL);
CFArraySortValues(buttons, CFRangeMake(0, CFArrayGetCount(buttons)),
compareElements, NULL);
CFArraySortValues(hats, CFRangeMake(0, CFArrayGetCount(hats)),
compareElements, NULL);
js = _glfwAllocJoystick(name, guid,
(int) CFArrayGetCount(axes),
(int) CFArrayGetCount(buttons),
(int) CFArrayGetCount(hats));
js->ns.device = device;
js->ns.axes = axes;
js->ns.buttons = buttons;
js->ns.hats = hats;
_glfwInputJoystick(js, GLFW_CONNECTED);
}
// Callback for user-initiated joystick removal
//
static void removeCallback(void* context,
IOReturn result,
void* sender,
IOHIDDeviceRef device)
{
int jid;
for (jid = 0; jid <= GLFW_JOYSTICK_LAST; jid++)
{
if (_glfw.joysticks[jid].ns.device == device)
{
closeJoystick(_glfw.joysticks + jid);
break;
}
}
}
//////////////////////////////////////////////////////////////////////////
////// GLFW internal API //////
//////////////////////////////////////////////////////////////////////////
// Initialize joystick interface
//
void _glfwInitJoysticksNS(void)
{
CFMutableArrayRef matching;
const long usages[] =
{
kHIDUsage_GD_Joystick,
kHIDUsage_GD_GamePad,
kHIDUsage_GD_MultiAxisController
};
_glfw.ns.hidManager = IOHIDManagerCreate(kCFAllocatorDefault,
kIOHIDOptionsTypeNone);
matching = CFArrayCreateMutable(kCFAllocatorDefault,
0,
&kCFTypeArrayCallBacks);
if (!matching)
{
_glfwInputError(GLFW_PLATFORM_ERROR, "Cocoa: Failed to create array");
return;
}
for (int i = 0; i < sizeof(usages) / sizeof(long); i++)
{
const long page = kHIDPage_GenericDesktop;
CFMutableDictionaryRef dict =
CFDictionaryCreateMutable(kCFAllocatorDefault,
0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
if (!dict)
continue;
CFNumberRef pageRef = CFNumberCreate(kCFAllocatorDefault,
kCFNumberLongType,
&page);
CFNumberRef usageRef = CFNumberCreate(kCFAllocatorDefault,
kCFNumberLongType,
&usages[i]);
if (pageRef && usageRef)
{
CFDictionarySetValue(dict,
CFSTR(kIOHIDDeviceUsagePageKey),
pageRef);
CFDictionarySetValue(dict,
CFSTR(kIOHIDDeviceUsageKey),
usageRef);
CFArrayAppendValue(matching, dict);
}
if (pageRef)
CFRelease(pageRef);
if (usageRef)
CFRelease(usageRef);
CFRelease(dict);
}
IOHIDManagerSetDeviceMatchingMultiple(_glfw.ns.hidManager, matching);
CFRelease(matching);
IOHIDManagerRegisterDeviceMatchingCallback(_glfw.ns.hidManager,
&matchCallback, NULL);
IOHIDManagerRegisterDeviceRemovalCallback(_glfw.ns.hidManager,
&removeCallback, NULL);
IOHIDManagerScheduleWithRunLoop(_glfw.ns.hidManager,
CFRunLoopGetMain(),
kCFRunLoopDefaultMode);
IOHIDManagerOpen(_glfw.ns.hidManager, kIOHIDOptionsTypeNone);
// Execute the run loop once in order to register any initially-attached
// joysticks
CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0, false);
}
// Close all opened joystick handles
//
void _glfwTerminateJoysticksNS(void)
{
int jid;
for (jid = 0; jid <= GLFW_JOYSTICK_LAST; jid++)
closeJoystick(_glfw.joysticks + jid);
CFRelease(_glfw.ns.hidManager);
_glfw.ns.hidManager = NULL;
}
//////////////////////////////////////////////////////////////////////////
////// GLFW platform API //////
//////////////////////////////////////////////////////////////////////////
int _glfwPlatformPollJoystick(_GLFWjoystick* js, int mode)
{
if (mode & _GLFW_POLL_AXES)
{
CFIndex i;
for (i = 0; i < CFArrayGetCount(js->ns.axes); i++)
{
_GLFWjoyelementNS* axis = (_GLFWjoyelementNS*)
CFArrayGetValueAtIndex(js->ns.axes, i);
const long raw = getElementValue(js, axis);
// Perform auto calibration
if (raw < axis->minimum)
axis->minimum = raw;
if (raw > axis->maximum)
axis->maximum = raw;
const long size = axis->maximum - axis->minimum;
if (size == 0)
_glfwInputJoystickAxis(js, (int) i, 0.f);
else
{
const float value = (2.f * (raw - axis->minimum) / size) - 1.f;
_glfwInputJoystickAxis(js, (int) i, value);
}
}
}
if (mode & _GLFW_POLL_BUTTONS)
{
CFIndex i;
for (i = 0; i < CFArrayGetCount(js->ns.buttons); i++)
{
_GLFWjoyelementNS* button = (_GLFWjoyelementNS*)
CFArrayGetValueAtIndex(js->ns.buttons, i);
const char value = getElementValue(js, button) - button->minimum;
const int state = (value > 0) ? GLFW_PRESS : GLFW_RELEASE;
_glfwInputJoystickButton(js, (int) i, state);
}
for (i = 0; i < CFArrayGetCount(js->ns.hats); i++)
{
const int states[9] =
{
GLFW_HAT_UP,
GLFW_HAT_RIGHT_UP,
GLFW_HAT_RIGHT,
GLFW_HAT_RIGHT_DOWN,
GLFW_HAT_DOWN,
GLFW_HAT_LEFT_DOWN,
GLFW_HAT_LEFT,
GLFW_HAT_LEFT_UP,
GLFW_HAT_CENTERED
};
_GLFWjoyelementNS* hat = (_GLFWjoyelementNS*)
CFArrayGetValueAtIndex(js->ns.hats, i);
long state = getElementValue(js, hat) - hat->minimum;
if (state < 0 || state > 8)
state = 8;
_glfwInputJoystickHat(js, (int) i, states[state]);
}
}
return js->present;
}
void _glfwPlatformUpdateGamepadGUID(char* guid)
{
if ((strncmp(guid + 4, "000000000000", 12) == 0) &&
(strncmp(guid + 20, "000000000000", 12) == 0))
{
char original[33];
strncpy(original, guid, sizeof(original) - 1);
sprintf(guid, "03000000%.4s0000%.4s000000000000",
original, original + 16);
}
}

571
cs440-acg/ext/nanogui/ext/glfw/src/cocoa_monitor.m Normal file
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@@ -0,0 +1,571 @@
//========================================================================
// GLFW 3.3 macOS - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2019 Camilla Löwy <elmindreda@glfw.org>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
#include "internal.h"
#include <stdlib.h>
#include <limits.h>
#include <math.h>
#include <IOKit/graphics/IOGraphicsLib.h>
#include <ApplicationServices/ApplicationServices.h>
// Get the name of the specified display, or NULL
//
static char* getDisplayName(CGDirectDisplayID displayID)
{
io_iterator_t it;
io_service_t service;
CFDictionaryRef info;
if (IOServiceGetMatchingServices(kIOMasterPortDefault,
IOServiceMatching("IODisplayConnect"),
&it) != 0)
{
// This may happen if a desktop Mac is running headless
return NULL;
}
while ((service = IOIteratorNext(it)) != 0)
{
info = IODisplayCreateInfoDictionary(service,
kIODisplayOnlyPreferredName);
CFNumberRef vendorIDRef =
CFDictionaryGetValue(info, CFSTR(kDisplayVendorID));
CFNumberRef productIDRef =
CFDictionaryGetValue(info, CFSTR(kDisplayProductID));
if (!vendorIDRef || !productIDRef)
{
CFRelease(info);
continue;
}
unsigned int vendorID, productID;
CFNumberGetValue(vendorIDRef, kCFNumberIntType, &vendorID);
CFNumberGetValue(productIDRef, kCFNumberIntType, &productID);
if (CGDisplayVendorNumber(displayID) == vendorID &&
CGDisplayModelNumber(displayID) == productID)
{
// Info dictionary is used and freed below
break;
}
CFRelease(info);
}
IOObjectRelease(it);
if (!service)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Cocoa: Failed to find service port for display");
return NULL;
}
CFDictionaryRef names =
CFDictionaryGetValue(info, CFSTR(kDisplayProductName));
CFStringRef nameRef;
if (!names || !CFDictionaryGetValueIfPresent(names, CFSTR("en_US"),
(const void**) &nameRef))
{
// This may happen if a desktop Mac is running headless
CFRelease(info);
return NULL;
}
const CFIndex size =
CFStringGetMaximumSizeForEncoding(CFStringGetLength(nameRef),
kCFStringEncodingUTF8);
char* name = calloc(size + 1, 1);
CFStringGetCString(nameRef, name, size, kCFStringEncodingUTF8);
CFRelease(info);
return name;
}
// Check whether the display mode should be included in enumeration
//
static GLFWbool modeIsGood(CGDisplayModeRef mode)
{
uint32_t flags = CGDisplayModeGetIOFlags(mode);
if (!(flags & kDisplayModeValidFlag) || !(flags & kDisplayModeSafeFlag))
return GLFW_FALSE;
if (flags & kDisplayModeInterlacedFlag)
return GLFW_FALSE;
if (flags & kDisplayModeStretchedFlag)
return GLFW_FALSE;
#if MAC_OS_X_VERSION_MAX_ALLOWED <= 101100
CFStringRef format = CGDisplayModeCopyPixelEncoding(mode);
if (CFStringCompare(format, CFSTR(IO16BitDirectPixels), 0) &&
CFStringCompare(format, CFSTR(IO32BitDirectPixels), 0))
{
CFRelease(format);
return GLFW_FALSE;
}
CFRelease(format);
#endif /* MAC_OS_X_VERSION_MAX_ALLOWED */
return GLFW_TRUE;
}
// Convert Core Graphics display mode to GLFW video mode
//
static GLFWvidmode vidmodeFromCGDisplayMode(CGDisplayModeRef mode,
CVDisplayLinkRef link)
{
GLFWvidmode result;
result.width = (int) CGDisplayModeGetWidth(mode);
result.height = (int) CGDisplayModeGetHeight(mode);
result.refreshRate = (int) round(CGDisplayModeGetRefreshRate(mode));
if (result.refreshRate == 0)
{
const CVTime time = CVDisplayLinkGetNominalOutputVideoRefreshPeriod(link);
if (!(time.flags & kCVTimeIsIndefinite))
result.refreshRate = (int) (time.timeScale / (double) time.timeValue);
}
#if MAC_OS_X_VERSION_MAX_ALLOWED <= 101100
CFStringRef format = CGDisplayModeCopyPixelEncoding(mode);
if (CFStringCompare(format, CFSTR(IO16BitDirectPixels), 0) == 0)
{
result.redBits = 5;
result.greenBits = 5;
result.blueBits = 5;
}
else
#endif /* MAC_OS_X_VERSION_MAX_ALLOWED */
{
result.redBits = 8;
result.greenBits = 8;
result.blueBits = 8;
}
#if MAC_OS_X_VERSION_MAX_ALLOWED <= 101100
CFRelease(format);
#endif /* MAC_OS_X_VERSION_MAX_ALLOWED */
return result;
}
// Starts reservation for display fading
//
static CGDisplayFadeReservationToken beginFadeReservation(void)
{
CGDisplayFadeReservationToken token = kCGDisplayFadeReservationInvalidToken;
if (CGAcquireDisplayFadeReservation(5, &token) == kCGErrorSuccess)
{
CGDisplayFade(token, 0.3,
kCGDisplayBlendNormal,
kCGDisplayBlendSolidColor,
0.0, 0.0, 0.0,
TRUE);
}
return token;
}
// Ends reservation for display fading
//
static void endFadeReservation(CGDisplayFadeReservationToken token)
{
if (token != kCGDisplayFadeReservationInvalidToken)
{
CGDisplayFade(token, 0.5,
kCGDisplayBlendSolidColor,
kCGDisplayBlendNormal,
0.0, 0.0, 0.0,
FALSE);
CGReleaseDisplayFadeReservation(token);
}
}
// Finds and caches the NSScreen corresponding to the specified monitor
//
GLFWbool refreshMonitorScreen(_GLFWmonitor* monitor)
{
if (monitor->ns.screen)
return GLFW_TRUE;
for (NSScreen* screen in [NSScreen screens])
{
NSNumber* displayID = [screen deviceDescription][@"NSScreenNumber"];
// HACK: Compare unit numbers instead of display IDs to work around
// display replacement on machines with automatic graphics
// switching
if (monitor->ns.unitNumber == CGDisplayUnitNumber([displayID unsignedIntValue]))
{
monitor->ns.screen = screen;
return GLFW_TRUE;
}
}
_glfwInputError(GLFW_PLATFORM_ERROR, "Cocoa: Failed to find a screen for monitor");
return GLFW_FALSE;
}
//////////////////////////////////////////////////////////////////////////
////// GLFW internal API //////
//////////////////////////////////////////////////////////////////////////
// Poll for changes in the set of connected monitors
//
void _glfwPollMonitorsNS(void)
{
uint32_t i, j, displayCount, disconnectedCount;
CGDirectDisplayID* displays;
_GLFWmonitor** disconnected = NULL;
CGGetOnlineDisplayList(0, NULL, &displayCount);
displays = calloc(displayCount, sizeof(CGDirectDisplayID));
CGGetOnlineDisplayList(displayCount, displays, &displayCount);
for (i = 0; i < _glfw.monitorCount; i++)
_glfw.monitors[i]->ns.screen = nil;
disconnectedCount = _glfw.monitorCount;
if (disconnectedCount)
{
disconnected = calloc(_glfw.monitorCount, sizeof(_GLFWmonitor*));
memcpy(disconnected,
_glfw.monitors,
_glfw.monitorCount * sizeof(_GLFWmonitor*));
}
for (i = 0; i < displayCount; i++)
{
_GLFWmonitor* monitor;
const uint32_t unitNumber = CGDisplayUnitNumber(displays[i]);
if (CGDisplayIsAsleep(displays[i]))
continue;
for (j = 0; j < disconnectedCount; j++)
{
// HACK: Compare unit numbers instead of display IDs to work around
// display replacement on machines with automatic graphics
// switching
if (disconnected[j] && disconnected[j]->ns.unitNumber == unitNumber)
{
disconnected[j] = NULL;
break;
}
}
const CGSize size = CGDisplayScreenSize(displays[i]);
char* name = getDisplayName(displays[i]);
if (!name)
name = _glfw_strdup("Unknown");
monitor = _glfwAllocMonitor(name, size.width, size.height);
monitor->ns.displayID = displays[i];
monitor->ns.unitNumber = unitNumber;
free(name);
_glfwInputMonitor(monitor, GLFW_CONNECTED, _GLFW_INSERT_LAST);
}
for (i = 0; i < disconnectedCount; i++)
{
if (disconnected[i])
_glfwInputMonitor(disconnected[i], GLFW_DISCONNECTED, 0);
}
free(disconnected);
free(displays);
}
// Change the current video mode
//
void _glfwSetVideoModeNS(_GLFWmonitor* monitor, const GLFWvidmode* desired)
{
CFArrayRef modes;
CFIndex count, i;
CVDisplayLinkRef link;
CGDisplayModeRef native = NULL;
GLFWvidmode current;
const GLFWvidmode* best;
best = _glfwChooseVideoMode(monitor, desired);
_glfwPlatformGetVideoMode(monitor, &current);
if (_glfwCompareVideoModes(&current, best) == 0)
return;
CVDisplayLinkCreateWithCGDisplay(monitor->ns.displayID, &link);
modes = CGDisplayCopyAllDisplayModes(monitor->ns.displayID, NULL);
count = CFArrayGetCount(modes);
for (i = 0; i < count; i++)
{
CGDisplayModeRef dm = (CGDisplayModeRef) CFArrayGetValueAtIndex(modes, i);
if (!modeIsGood(dm))
continue;
const GLFWvidmode mode = vidmodeFromCGDisplayMode(dm, link);
if (_glfwCompareVideoModes(best, &mode) == 0)
{
native = dm;
break;
}
}
if (native)
{
if (monitor->ns.previousMode == NULL)
monitor->ns.previousMode = CGDisplayCopyDisplayMode(monitor->ns.displayID);
CGDisplayFadeReservationToken token = beginFadeReservation();
CGDisplaySetDisplayMode(monitor->ns.displayID, native, NULL);
endFadeReservation(token);
}
CFRelease(modes);
CVDisplayLinkRelease(link);
}
// Restore the previously saved (original) video mode
//
void _glfwRestoreVideoModeNS(_GLFWmonitor* monitor)
{
if (monitor->ns.previousMode)
{
CGDisplayFadeReservationToken token = beginFadeReservation();
CGDisplaySetDisplayMode(monitor->ns.displayID,
monitor->ns.previousMode, NULL);
endFadeReservation(token);
CGDisplayModeRelease(monitor->ns.previousMode);
monitor->ns.previousMode = NULL;
}
}
//////////////////////////////////////////////////////////////////////////
////// GLFW platform API //////
//////////////////////////////////////////////////////////////////////////
void _glfwPlatformFreeMonitor(_GLFWmonitor* monitor)
{
}
void _glfwPlatformGetMonitorPos(_GLFWmonitor* monitor, int* xpos, int* ypos)
{
@autoreleasepool {
const CGRect bounds = CGDisplayBounds(monitor->ns.displayID);
if (xpos)
*xpos = (int) bounds.origin.x;
if (ypos)
*ypos = (int) bounds.origin.y;
} // autoreleasepool
}
void _glfwPlatformGetMonitorContentScale(_GLFWmonitor* monitor,
float* xscale, float* yscale)
{
@autoreleasepool {
if (!refreshMonitorScreen(monitor))
return;
const NSRect points = [monitor->ns.screen frame];
const NSRect pixels = [monitor->ns.screen convertRectToBacking:points];
if (xscale)
*xscale = (float) (pixels.size.width / points.size.width);
if (yscale)
*yscale = (float) (pixels.size.height / points.size.height);
} // autoreleasepool
}
void _glfwPlatformGetMonitorWorkarea(_GLFWmonitor* monitor,
int* xpos, int* ypos,
int* width, int* height)
{
@autoreleasepool {
if (!refreshMonitorScreen(monitor))
return;
const NSRect frameRect = [monitor->ns.screen visibleFrame];
if (xpos)
*xpos = frameRect.origin.x;
if (ypos)
*ypos = _glfwTransformYNS(frameRect.origin.y + frameRect.size.height - 1);
if (width)
*width = frameRect.size.width;
if (height)
*height = frameRect.size.height;
} // autoreleasepool
}
GLFWvidmode* _glfwPlatformGetVideoModes(_GLFWmonitor* monitor, int* count)
{
@autoreleasepool {
CFArrayRef modes;
CFIndex found, i, j;
GLFWvidmode* result;
CVDisplayLinkRef link;
*count = 0;
CVDisplayLinkCreateWithCGDisplay(monitor->ns.displayID, &link);
modes = CGDisplayCopyAllDisplayModes(monitor->ns.displayID, NULL);
found = CFArrayGetCount(modes);
result = calloc(found, sizeof(GLFWvidmode));
for (i = 0; i < found; i++)
{
CGDisplayModeRef dm = (CGDisplayModeRef) CFArrayGetValueAtIndex(modes, i);
if (!modeIsGood(dm))
continue;
const GLFWvidmode mode = vidmodeFromCGDisplayMode(dm, link);
for (j = 0; j < *count; j++)
{
if (_glfwCompareVideoModes(result + j, &mode) == 0)
break;
}
// Skip duplicate modes
if (i < *count)
continue;
(*count)++;
result[*count - 1] = mode;
}
CFRelease(modes);
CVDisplayLinkRelease(link);
return result;
} // autoreleasepool
}
void _glfwPlatformGetVideoMode(_GLFWmonitor* monitor, GLFWvidmode *mode)
{
@autoreleasepool {
CGDisplayModeRef displayMode;
CVDisplayLinkRef link;
CVDisplayLinkCreateWithCGDisplay(monitor->ns.displayID, &link);
displayMode = CGDisplayCopyDisplayMode(monitor->ns.displayID);
*mode = vidmodeFromCGDisplayMode(displayMode, link);
CGDisplayModeRelease(displayMode);
CVDisplayLinkRelease(link);
} // autoreleasepool
}
GLFWbool _glfwPlatformGetGammaRamp(_GLFWmonitor* monitor, GLFWgammaramp* ramp)
{
@autoreleasepool {
uint32_t i, size = CGDisplayGammaTableCapacity(monitor->ns.displayID);
CGGammaValue* values = calloc(size * 3, sizeof(CGGammaValue));
CGGetDisplayTransferByTable(monitor->ns.displayID,
size,
values,
values + size,
values + size * 2,
&size);
_glfwAllocGammaArrays(ramp, size);
for (i = 0; i < size; i++)
{
ramp->red[i] = (unsigned short) (values[i] * 65535);
ramp->green[i] = (unsigned short) (values[i + size] * 65535);
ramp->blue[i] = (unsigned short) (values[i + size * 2] * 65535);
}
free(values);
return GLFW_TRUE;
} // autoreleasepool
}
void _glfwPlatformSetGammaRamp(_GLFWmonitor* monitor, const GLFWgammaramp* ramp)
{
@autoreleasepool {
int i;
CGGammaValue* values = calloc(ramp->size * 3, sizeof(CGGammaValue));
for (i = 0; i < ramp->size; i++)
{
values[i] = ramp->red[i] / 65535.f;
values[i + ramp->size] = ramp->green[i] / 65535.f;
values[i + ramp->size * 2] = ramp->blue[i] / 65535.f;
}
CGSetDisplayTransferByTable(monitor->ns.displayID,
ramp->size,
values,
values + ramp->size,
values + ramp->size * 2);
free(values);
} // autoreleasepool
}
//////////////////////////////////////////////////////////////////////////
////// GLFW native API //////
//////////////////////////////////////////////////////////////////////////
GLFWAPI CGDirectDisplayID glfwGetCocoaMonitor(GLFWmonitor* handle)
{
_GLFWmonitor* monitor = (_GLFWmonitor*) handle;
_GLFW_REQUIRE_INIT_OR_RETURN(kCGNullDirectDisplay);
return monitor->ns.displayID;
}

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