default to no multithreading for emscripten

* build(deps): bump the submodules group with 2 updates

Bumps the submodules group with 2 updates: [bgfx](https://github.com/bkaradzic/bgfx) and [bx](https://github.com/bkaradzic/bx).

CMakeLists.txt

@@ -45,7 +45,7 @@ cmake_dependent_option(
 )
 cmake_dependent_option(BGFX_WITH_WAYLAND "Use Wayland backend." ON "CMAKE_SYSTEM_NAME STREQUAL Linux" OFF)
 option(BGFX_CUSTOM_TARGETS "Include convenience custom targets." ON)
-option(BGFX_CONFIG_MULTITHREADED "Build bgfx with multithreaded configuration" ON)
+cmake_dependent_option(BGFX_CONFIG_MULTITHREADED "Build bgfx with multithreaded configuration" ON "NOT CMAKE_SYSTEM_NAME STREQUAL Emscripten" OFF)
 option(BGFX_CONFIG_RENDERER_WEBGPU "Enable the webgpu renderer" OFF)
 option(BGFX_CONFIG_DEBUG_ANNOTATION "Enable gfx debug annotations (default: on in debug)" OFF)
 

cmake/bgfx/3rdparty/spirv-opt.cmake

@@ -114,6 +114,7 @@ file(
 	${SPIRV_TOOLS}/source/val/validate_extensions.cpp
 	${SPIRV_TOOLS}/source/val/validate_function.cpp
 	${SPIRV_TOOLS}/source/val/validate_graph.cpp
+	${SPIRV_TOOLS}/source/val/validate_group.cpp
 	${SPIRV_TOOLS}/source/val/validate_id.cpp
 	${SPIRV_TOOLS}/source/val/validate_image.cpp
 	${SPIRV_TOOLS}/source/val/validate_instruction.cpp

cmake/bgfx/shaderc.cmake

@@ -38,6 +38,20 @@ target_include_directories(
 	PRIVATE ${BGFX_DIR}/3rdparty/dawn
 			${BGFX_DIR}/3rdparty/dawn/src
 )
+
+if(UNIX
+   AND NOT APPLE
+   AND NOT EMSCRIPTEN
+   AND NOT ANDROID
+)
+	target_include_directories(
+		shaderc
+		PRIVATE ${BGFX_DIR}/3rdparty/directx-headers/include/directx
+				${BGFX_DIR}/3rdparty/directx-headers/include
+				${BGFX_DIR}/3rdparty/directx-headers/include/wsl/stubs
+	)
+endif()
+
 if(BGFX_AMALGAMATED)
 	target_link_libraries(shaderc PRIVATE bgfx-shader)
 endif()