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Backends, Examples: WebGPU: header optimization. Added the code for using Dawn “pre-built” library. (#8381)

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BrutPitt
2025-11-01 10:43:26 +01:00
committed by ocornut
parent f1becf7e4b
commit 3cc8b470a6
5 changed files with 133 additions and 113 deletions
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80
examples/example_sdl2_wgpu/CMakeLists.txt
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@@ -67,8 +67,6 @@ if(EMSCRIPTEN)
add_compile_options(-sDISABLE_EXCEPTION_CATCHING=1 -DIMGUI_DISABLE_FILE_FUNCTIONS=1)
else() # Native/Desktop build
find_package(SDL2 REQUIRED) # SDL_MAIN_HANDLED
if(NOT IMGUI_DAWN_DIR AND NOT IMGUI_WGPU_DIR) # if it's Native/Desktop build, IMGUI_DAWN_DIR or IMGUI_WGPU_DIR must be specified
message(FATAL_ERROR "Please specify the Dawn or WGPU base directory")
endif()
@@ -82,45 +80,52 @@ else() # Native/Desktop build
set(OS_LIBRARIES "-framework CoreFoundation -framework QuartzCore -framework Metal -framework MetalKit -framework Cocoa")
endif()
find_package(SDL2 REQUIRED) # SDL_MAIN_HANDLED
if(IMGUI_DAWN_DIR) # DAWN-Native build options
set(IMGUI_DAWN_DIR CACHE PATH "Path to Dawn repository")
if(NOT IMGUI_DAWN_DIR)
message(FATAL_ERROR "Please specify the Dawn repository by setting IMGUI_DAWN_DIR")
endif()
list(APPEND CMAKE_PREFIX_PATH ${IMGUI_DAWN_DIR})
find_package(Threads) # required from Dawn installation
find_package(Dawn) # Search for a Dawn installation using IMGUI_DAWN_DIR in CMAKE_PREFIX_PATH
if(Dawn_FOUND)
message("Dawn Installation has been found!")
set(LIBRARIES dawn::webgpu_dawn ${OS_LIBRARIES})
else()
set(IMGUI_DAWN_DIR CACHE PATH "Path to Dawn repository")
option(DAWN_USE_GLFW OFF) # disable buildin GLFW in DAWN when we use SDL2 / SDL3
option(DAWN_USE_GLFW OFF) # disable buildin GLFW in DAWN when we use SDL2 / SDL3
option(DAWN_FETCH_DEPENDENCIES "Use fetch_dawn_dependencies.py as an alternative to using depot_tools" ON)
set(DAWN_BUILD_MONOLITHIC_LIBRARY "STATIC" CACHE STRING "Build monolithic library: SHARED, STATIC, or OFF.")
option(DAWN_FETCH_DEPENDENCIES "Use fetch_dawn_dependencies.py as an alternative to using depot_tools" ON)
set(DAWN_BUILD_MONOLITHIC_LIBRARY "STATIC" CACHE STRING "Build monolithic library: SHARED, STATIC, or OFF.")
# Dawn builds many things by default - disable things we don't need
option(DAWN_BUILD_SAMPLES "Enables building Dawn's samples" OFF)
option(TINT_BUILD_CMD_TOOLS "Build the Tint command line tools" OFF)
option(TINT_BUILD_DOCS "Build documentation" OFF)
option(TINT_BUILD_TESTS "Build tests" OFF)
if(NOT APPLE)
option(TINT_BUILD_MSL_WRITER "Build the MSL output writer" OFF)
endif()
if(WIN32)
option(DAWN_FORCE_SYSTEM_COMPONENT_LOAD "Allow system component fallback" ON)
option(TINT_BUILD_SPV_READER "Build the SPIR-V input reader" OFF)
option(TINT_BUILD_WGSL_READER "Build the WGSL input reader" ON)
option(TINT_BUILD_GLSL_WRITER "Build the GLSL output writer" OFF)
option(TINT_BUILD_GLSL_VALIDATOR "Build the GLSL output validator" OFF)
option(TINT_BUILD_SPV_WRITER "Build the SPIR-V output writer" ON)
option(TINT_BUILD_WGSL_WRITER "Build the WGSL output writer" ON)
endif()
# check if WAYLAND is the current Session Type and enable DAWN_USE_WAYLAND Wayland option @compile time
# You can override this using: cmake -DDAWN_USE_WAYLAND=X (X = ON | OFF)
if(LINUX)
if($ENV{XDG_SESSION_TYPE} MATCHES wayland)
option(DAWN_USE_WAYLAND "Enable support for Wayland surface" ON)
# Dawn builds many things by default - disable things we don't need
option(DAWN_BUILD_SAMPLES "Enables building Dawn's samples" OFF)
option(TINT_BUILD_CMD_TOOLS "Build the Tint command line tools" OFF)
option(TINT_BUILD_DOCS "Build documentation" OFF)
option(TINT_BUILD_TESTS "Build tests" OFF)
if(NOT APPLE)
option(TINT_BUILD_MSL_WRITER "Build the MSL output writer" OFF)
endif()
if(WIN32)
option(DAWN_FORCE_SYSTEM_COMPONENT_LOAD "Allow system component fallback" ON)
option(TINT_BUILD_SPV_READER "Build the SPIR-V input reader" OFF)
option(TINT_BUILD_WGSL_READER "Build the WGSL input reader" ON)
option(TINT_BUILD_GLSL_WRITER "Build the GLSL output writer" OFF)
option(TINT_BUILD_GLSL_VALIDATOR "Build the GLSL output validator" OFF)
option(TINT_BUILD_SPV_WRITER "Build the SPIR-V output writer" ON)
option(TINT_BUILD_WGSL_WRITER "Build the WGSL output writer" ON)
endif()
# check if WAYLAND is the current Session Type and enable DAWN_USE_WAYLAND Wayland option @compile time
# You can override this using: cmake -DDAWN_USE_WAYLAND=X (X = ON | OFF)
if(LINUX)
if($ENV{XDG_SESSION_TYPE} MATCHES wayland)
option(DAWN_USE_WAYLAND "Enable support for Wayland surface" ON)
endif()
endif()
add_subdirectory("${IMGUI_DAWN_DIR}" "${CMAKE_CURRENT_BINARY_DIR}/dawn" EXCLUDE_FROM_ALL)
set(LIBRARIES webgpu_dawn ${OS_LIBRARIES})
endif()
add_subdirectory("${IMGUI_DAWN_DIR}" "${CMAKE_CURRENT_BINARY_DIR}/dawn" EXCLUDE_FROM_ALL)
set(LIBRARIES webgpu_dawn ${OS_LIBRARIES})
else() # WGPU-Native build options
set(WGPU_NATIVE_LIB_DIR ${IMGUI_WGPU_DIR}/lib)
@@ -163,12 +168,15 @@ endif()
if(NOT EMSCRIPTEN) # WegGPU-Native settings
if(IMGUI_DAWN_DIR)
target_compile_definitions(${IMGUI_EXECUTABLE} PUBLIC "IMGUI_IMPL_WEBGPU_BACKEND_DAWN")
if(NOT Dawn_FOUND)
target_link_libraries(${IMGUI_EXECUTABLE} INTERFACE webgpu_cpp)
endif()
else()
target_compile_definitions(${IMGUI_EXECUTABLE} PUBLIC "IMGUI_IMPL_WEBGPU_BACKEND_WGPU")
target_include_directories(${IMGUI_EXECUTABLE} PUBLIC ${IMGUI_WGPU_DIR}/include)
endif()
target_link_libraries(${IMGUI_EXECUTABLE} INTERFACE webgpu_cpp PUBLIC ${LIBRARIES} ${SDL2_LIBRARIES})
target_link_libraries(${IMGUI_EXECUTABLE} PUBLIC ${LIBRARIES} ${SDL2_LIBRARIES})
else() # Emscripten settings
set(CMAKE_EXECUTABLE_SUFFIX ".html")