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Azur/imgui-builds/CMakeLists.txt

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CMake
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meta: build system for Dear ImGui + GL3W + FreeType2 * Add build instructions for Dear ImGui that build the SDL + OpenGL 3 / OpenGL ES 2 backend. * Use Dear ImGui's bundled GL3W as a loader (including in azur itself, which has not been using a loader until now). * Properly select headers for OpenGL ES 2.0 (with the VAO extension) and attributes for WebGL; clear up OpenGL 4 error codes. * If FreeType2 is available through pkg-config, or if empscripten is used (since it has a FreeType port), use FreeType to render fonts in Dear ImGui for much-appreciated hinting quality. Minor changes: * Add window title to azur_init(). * Use emscripten's infinite loop simulation to make sure everything stays in the same thread. This is needed for Dear ImGui to work.
2021-07-05 14:03:21 +02:00
# The Dear ImGui library for SDL + OpenGL3/OpenGLES2
set(SOURCES
../imgui/imgui.cpp
../imgui/imgui_demo.cpp
../imgui/imgui_draw.cpp
../imgui/imgui_tables.cpp
../imgui/imgui_widgets.cpp
../imgui/backends/imgui_impl_opengl3.cpp
../imgui/backends/imgui_impl_sdl.cpp)
# Use Freetype if the library is installed, or the emscripten port
if(AZUR_PLATFORM_EMSCRIPTEN)
list(APPEND SOURCES ../imgui/misc/freetype/imgui_freetype.cpp)
else()
pkg_check_modules(freetype2 freetype2 IMPORTED_TARGET)
if(freetype2_FOUND)
list(APPEND SOURCES ../imgui/misc/freetype/imgui_freetype.cpp)
endif()
endif()
add_library(imgui ${SOURCES})
# Try to reduce the size of the binary code by including individual functions
# from the archive, instead of whole files
target_compile_options(imgui PRIVATE -ffunction-sections)
target_compile_options(imgui INTERFACE -Wl,--gc-sections)
meta: update ImGui, make GL3W as external module
2021-09-02 14:59:51 +02:00
# Use the included ImGui loader on desktop
meta: build system for Dear ImGui + GL3W + FreeType2 * Add build instructions for Dear ImGui that build the SDL + OpenGL 3 / OpenGL ES 2 backend. * Use Dear ImGui's bundled GL3W as a loader (including in azur itself, which has not been using a loader until now). * Properly select headers for OpenGL ES 2.0 (with the VAO extension) and attributes for WebGL; clear up OpenGL 4 error codes. * If FreeType2 is available through pkg-config, or if empscripten is used (since it has a FreeType port), use FreeType to render fonts in Dear ImGui for much-appreciated hinting quality. Minor changes: * Add window title to azur_init(). * Use emscripten's infinite loop simulation to make sure everything stays in the same thread. This is needed for Dear ImGui to work.
2021-07-05 14:03:21 +02:00
if(AZUR_GRAPHICS_OPENGL_3_3)
meta: update ImGui, make GL3W as external module
2021-09-02 14:59:51 +02:00
# Nothing do, loader is built-in
meta: build system for Dear ImGui + GL3W + FreeType2 * Add build instructions for Dear ImGui that build the SDL + OpenGL 3 / OpenGL ES 2 backend. * Use Dear ImGui's bundled GL3W as a loader (including in azur itself, which has not been using a loader until now). * Properly select headers for OpenGL ES 2.0 (with the VAO extension) and attributes for WebGL; clear up OpenGL 4 error codes. * If FreeType2 is available through pkg-config, or if empscripten is used (since it has a FreeType port), use FreeType to render fonts in Dear ImGui for much-appreciated hinting quality. Minor changes: * Add window title to azur_init(). * Use emscripten's infinite loop simulation to make sure everything stays in the same thread. This is needed for Dear ImGui to work.
2021-07-05 14:03:21 +02:00
# Use the autonomous GLES 2.0 loader otherwise
elseif(AZUR_GRAPHICS_OPENGL_ES_2_0)
target_compile_definitions(imgui PUBLIC
-DIMGUI_IMPL_OPENGL_ES2)
endif()
# FreeType2 settings
if(freetype2_FOUND)
target_compile_definitions(imgui PUBLIC -DIMGUI_ENABLE_FREETYPE)
target_include_directories(imgui PRIVATE ../imgui/misc/freetype)
target_link_libraries(imgui PUBLIC PkgConfig::freetype2)
elseif(AZUR_PLATFORM_EMSCRIPTEN)
target_compile_definitions(imgui PUBLIC -DIMGUI_ENABLE_FREETYPE)
target_include_directories(imgui PRIVATE ../imgui/misc/freetype)
target_compile_options(imgui PUBLIC -sUSE_FREETYPE=2)
target_link_options(imgui INTERFACE -sUSE_FREETYPE=2)
endif()
# Provide include directories
target_include_directories(imgui PUBLIC ../imgui ../imgui/backends)