3rd party: Add webgpu cmake file (#84)

CMakeLists.txt

@@ -33,6 +33,7 @@ option( BGFX_USE_OVR          "Build with OVR support."                       OF
 option( BGFX_AMALGAMATED      "Amalgamated bgfx build for faster compilation" OFF )
 option( BX_AMALGAMATED        "Amalgamated bx build for faster compilation"   OFF )
 option( BGFX_CONFIG_DEBUG     "Enables debug configuration on all builds"     OFF )
+option( BGFX_CONFIG_RENDERER_WEBGPU     "Enables the webgpu renderer"         OFF )
 set( BGFX_OPENGL_VERSION   "" CACHE STRING "Specify minimum OpenGL version" )
 set( BGFX_OPENGLES_VERSION "" CACHE STRING "Specify minimum OpenGL ES version" )
 
@@ -108,7 +109,7 @@ if( BGFX_INSTALL )
 	install(FILES ${BGFX_DIR}/LICENSE DESTINATION ${CMAKE_INSTALL_DOCDIR})
 	install(FILES readme.md DESTINATION ${CMAKE_INSTALL_DOCDIR})
 
-	install( TARGETS bgfx bimg bx astc-codec astc edtaa3 etc1 etc2 iqa squish nvtt pvrtc
+	install( TARGETS bgfx bimg bx astc-codec astc edtaa3 etc1 etc2 iqa squish nvtt pvrtc webgpu
 			 EXPORT "${TARGETS_EXPORT_NAME}"
 			 LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
 			 ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"

cmake/3rdparty/spirv-cross.cmake

@@ -24,7 +24,6 @@ target_compile_definitions( spirv-cross PRIVATE SPIRV_CROSS_EXCEPTIONS_TO_ASSERT
 target_include_directories( spirv-cross PUBLIC
 	${BGFX_DIR}/3rdparty/spirv-cross
 	${BGFX_DIR}/3rdparty/spirv-cross/include
-	${BGFX_DIR}/3rdparty/webgpu/include
 )
 
 if( MSVC )

cmake/3rdparty/webgpu.cmake

@@ -0,0 +1,31 @@
+# bgfx.cmake - bgfx building in cmake
+# Written in 2017 by Joshua Brookover <joshua.al.brookover@gmail.com>
+
+# To the extent possible under law, the author(s) have dedicated all copyright
+# and related and neighboring rights to this software to the public domain
+# worldwide. This software is distributed without any warranty.
+
+# You should have received a copy of the CC0 Public Domain Dedication along with
+# this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
+
+if( TARGET webgpu )
+	return()
+endif()
+
+file(
+	GLOB
+    WEBGPU_SOURCES
+	${BGFX_DIR}/3rdparty/webgpu/include/webgpu/*.h
+    # ${BGFX_DIR}/3rdparty/webgpu/webgpu_cpp.cpp  # requires dawn to be installed
+)
+
+# Library without sources is interface
+#add_library( webgpu STATIC ${WEBGPU_SOURCES} )
+add_library(webgpu INTERFACE)
+target_include_directories( webgpu 
+    # PUBLIC
+    INTERFACE
+	    $<BUILD_INTERFACE:${BGFX_DIR}/3rdparty/webgpu/include>
+)
+
+# set_target_properties( webgpu PROPERTIES FOLDER "bgfx/3rdparty" )

cmake/bgfx.cmake

@@ -42,6 +42,16 @@ endif()
 # Create the bgfx target
 add_library( bgfx ${BGFX_SOURCES} )
 
+if(BGFX_CONFIG_RENDERER_WEBGPU)
+    include(cmake/3rdparty/webgpu.cmake)
+    target_compile_definitions( bgfx PRIVATE BGFX_CONFIG_RENDERER_WEBGPU=1)
+    if (EMSCRIPTEN)
+        target_link_options(bgfx PRIVATE "-s USE_WEBGPU=1")
+    else()
+        target_link_libraries(bgfx PRIVATE webgpu)
+    endif()
+endif()
+
 # Enable BGFX_CONFIG_DEBUG in Debug configuration
 target_compile_definitions( bgfx PRIVATE "$<$<CONFIG:Debug>:BGFX_CONFIG_DEBUG=1>" )
 if(BGFX_CONFIG_DEBUG)
@@ -120,4 +130,4 @@ set_target_properties( bgfx PROPERTIES FOLDER "bgfx" )
 # in Xcode we need to specify this file as objective-c++ (instead of renaming to .mm)
 if (XCODE)
 	set_source_files_properties(${BGFX_DIR}/src/renderer_vk.cpp PROPERTIES LANGUAGE OBJCXX XCODE_EXPLICIT_FILE_TYPE sourcecode.cpp.objcpp)
-endif()
+endif()

cmake/tools/shaderc.cmake

@@ -15,18 +15,19 @@ include( cmake/3rdparty/glsl-optimizer.cmake )
 include( cmake/3rdparty/glslang.cmake )
 include( cmake/3rdparty/spirv-cross.cmake )
 include( cmake/3rdparty/spirv-tools.cmake )
+include( cmake/3rdparty/webgpu.cmake )
 
 add_executable( shaderc ${BGFX_DIR}/tools/shaderc/shaderc.cpp ${BGFX_DIR}/tools/shaderc/shaderc.h ${BGFX_DIR}/tools/shaderc/shaderc_glsl.cpp ${BGFX_DIR}/tools/shaderc/shaderc_hlsl.cpp ${BGFX_DIR}/tools/shaderc/shaderc_pssl.cpp ${BGFX_DIR}/tools/shaderc/shaderc_spirv.cpp ${BGFX_DIR}/tools/shaderc/shaderc_metal.cpp )
 target_compile_definitions( shaderc PRIVATE "-D_CRT_SECURE_NO_WARNINGS" )
 set_target_properties( shaderc PROPERTIES FOLDER "bgfx/tools" )
-target_link_libraries( shaderc bx bimg bgfx-vertexlayout bgfx-shader-spirv fcpp glsl-optimizer glslang spirv-cross spirv-tools )
+target_link_libraries(shaderc PRIVATE bx bimg bgfx-vertexlayout bgfx-shader-spirv fcpp glsl-optimizer glslang spirv-cross spirv-tools webgpu)
 
 if( BGFX_CUSTOM_TARGETS )
 	add_dependencies( tools shaderc )
 endif()
 
 if (ANDROID)
-	target_link_libraries( shaderc log )
+    target_link_libraries(shaderc PRIVATE log)
 elseif (IOS)
 	set_target_properties(shaderc PROPERTIES MACOSX_BUNDLE ON
 											 MACOSX_BUNDLE_GUI_IDENTIFIER shaderc)