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Backends, Examples: removed Emscripten < 4.0.10 support. Removed IMGUI_IMPL_WEBGPU_BACKEND_WGPU. (#9281, #8381)

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- This commit removes the option of using -sUSE_WEBGPU=1 from CMake and make
- Compiling with a version of Emscripten >= 4.0.10 will work the same way as it was before
- Compiling with a version of Emscripten < 4.0.10 will print an error message and abort the build (in the case of CMake)
- Since there can only be 1 implementation for the backend in the case of Emscripten, this commit cleans the code accordingly
This commit is contained in:
Yan Pujante
2026-03-09 15:45:34 +01:00
committed by ocornut
parent 6f8bdb7bf7
commit e92820db2a
14 changed files with 24 additions and 161 deletions
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examples/example_glfw_wgpu/CMakeLists.txt
+8 -21
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@@ -52,23 +52,15 @@ set(IMGUI_EXAMPLE_SOURCE_FILES
)
if(EMSCRIPTEN)
if(NOT IMGUI_EMSCRIPTEN_WEBGPU_FLAG) # if IMGUI_EMSCRIPTEN_WEBGPU_FLAG not used, set by current EMSCRIPTEN version
if(EMSCRIPTEN_VERSION VERSION_GREATER_EQUAL "4.0.10")
set(IMGUI_EMSCRIPTEN_WEBGPU_FLAG "--use-port=emdawnwebgpu" CACHE STRING "Choose between --use-port=emdawnwebgpu (Dawn implementation of EMSCRIPTEN) and -sUSE_WEBGPU=1 (WGPU implementation of EMSCRIPTEN, deprecated in 4.0.10): default to --use-port=emdawnwebgpu for EMSCRIPTEN >= 4.0.10")
else()
set(IMGUI_EMSCRIPTEN_WEBGPU_FLAG "-sUSE_WEBGPU=1" CACHE STRING "Use -sUSE_WEBGPU=1 for EMSCRIPTEN WGPU implementation")
endif()
else() # if IMGUI_EMSCRIPTEN_WEBGPU_FLAG used, check correct version
if(EMSCRIPTEN_VERSION VERSION_LESS "4.0.10" AND "${IMGUI_EMSCRIPTEN_WEBGPU_FLAG}" MATCHES "emdawnwebgpu")
# it's necessary EMSCRIPTEN >= v4.0.10 (although "--use-port=path/to/emdawnwebgpu.port.py" is supported/tested from v4.0.8)
message(FATAL_ERROR "emdawnwebgpu needs EMSCRIPTEN version >= 4.0.10")
endif()
if(EMSCRIPTEN_VERSION VERSION_GREATER_EQUAL "4.0.10")
set(IMGUI_EMSCRIPTEN_WEBGPU_FLAG "--use-port=emdawnwebgpu" CACHE STRING "Default to --use-port=emdawnwebgpu. You can override to provide your own local port.")
else()
message(FATAL_ERROR "emdawnwebgpu needs EMSCRIPTEN version >= 4.0.10")
endif()
if(EMSCRIPTEN_VERSION VERSION_GREATER_EQUAL "3.1.57")
if(NOT IMGUI_EMSCRIPTEN_GLFW3)
# Defaults to contrib.glfw3 because Emscripten version is > 3.1.57
set(IMGUI_EMSCRIPTEN_GLFW3 "--use-port=contrib.glfw3" CACHE STRING "Choose between --use-port=contrib.glfw3 and -sUSE_GLFW=3 for GLFW implementation (default to --use-port=contrib.glfw3)")
else() # cannot use contrib.glfw3 prior to 3.1.57
set(IMGUI_EMSCRIPTEN_GLFW3 "-sUSE_GLFW=3" CACHE STRING "Use -sUSE_GLFW=3 for GLFW implementation" FORCE)
endif()
set(LIBRARIES glfw)
@@ -165,7 +157,6 @@ endif()
# In this example IMGUI_IMPL_WEBGPU_BACKEND_DAWN / IMGUI_IMPL_WEBGPU_BACKEND_WGPU internal define is set according to:
# EMSCRIPTEN: by used FLAG
# --use-port=emdawnwebgpu --> IMGUI_IMPL_WEBGPU_BACKEND_DAWN defined
# -sUSE_WEBGPU=1 --> IMGUI_IMPL_WEBGPU_BACKEND_WGPU defined
# NATIVE: by used SDK installation directory
# if IMGUI_DAWN_DIR is valid --> IMGUI_IMPL_WEBGPU_BACKEND_DAWN defined
# if IMGUI_WGPU_DIR is valid --> IMGUI_IMPL_WEBGPU_BACKEND_WGPU defined
@@ -191,12 +182,8 @@ else() # Emscripten settings
endif()
message(STATUS "Using ${IMGUI_EMSCRIPTEN_GLFW3} GLFW implementation")
if("${IMGUI_EMSCRIPTEN_WEBGPU_FLAG}" MATCHES "emdawnwebgpu")
target_compile_options(${IMGUI_EXECUTABLE} PUBLIC "${IMGUI_EMSCRIPTEN_WEBGPU_FLAG}")
target_compile_definitions(${IMGUI_EXECUTABLE} PUBLIC "IMGUI_IMPL_WEBGPU_BACKEND_DAWN")
else()
target_compile_definitions(${IMGUI_EXECUTABLE} PUBLIC "IMGUI_IMPL_WEBGPU_BACKEND_WGPU")
endif()
target_compile_options(${IMGUI_EXECUTABLE} PUBLIC "${IMGUI_EMSCRIPTEN_WEBGPU_FLAG}")
target_compile_definitions(${IMGUI_EXECUTABLE} PUBLIC "IMGUI_IMPL_WEBGPU_BACKEND_DAWN")
message(STATUS "Using ${IMGUI_EMSCRIPTEN_WEBGPU_FLAG} WebGPU implementation")
target_link_options(${IMGUI_EXECUTABLE} PRIVATE