Add missing MoltenVK submodules.

.gitmodules

@@ -61,3 +61,9 @@
 [submodule "MarathonRecompResources"]
 	path = MarathonRecompResources
 	url = https://github.com/IsaacMarovitz/MarathonRecompResources
+[submodule "thirdparty/MoltenVK/MoltenVK"]
+	path = thirdparty/MoltenVK/MoltenVK
+	url = https://github.com/KhronosGroup/MoltenVK.git
+[submodule "thirdparty/MoltenVK/SPIRV-Cross"]
+	path = thirdparty/MoltenVK/SPIRV-Cross
+	url = https://github.com/KhronosGroup/SPIRV-Cross.git

thirdparty/MoltenVK/CMakeLists.txt

@@ -0,0 +1,86 @@
+# Simple CMake script to compile MoltenVK with SPIRV-Cross as a shared library target
+
+# Prepare MoltenVK Git revision
+find_package(Git)
+if(GIT_FOUND)
+    execute_process(COMMAND ${GIT_EXECUTABLE} rev-parse --short HEAD
+            OUTPUT_VARIABLE MVK_GIT_REV
+            WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/MoltenVK
+            ERROR_QUIET
+            OUTPUT_STRIP_TRAILING_WHITESPACE)
+endif()
+set(MVK_GENERATED_INCLUDES ${CMAKE_CURRENT_BINARY_DIR}/Generated)
+file(WRITE ${MVK_GENERATED_INCLUDES}/mvkGitRevDerived.h "static const char* mvkRevString = \"${MVK_GIT_REV}\";")
+message(STATUS "MoltenVK revision: ${MVK_GIT_REV}")
+
+# Prepare MoltenVK version
+file(READ ${CMAKE_CURRENT_SOURCE_DIR}/MoltenVK/MoltenVK/MoltenVK/API/mvk_private_api.h MVK_PRIVATE_API)
+string(REGEX MATCH "#define MVK_VERSION_MAJOR   [0-9]+" MVK_VERSION_MAJOR_LINE "${MVK_PRIVATE_API}")
+string(REGEX MATCH "[0-9]+" MVK_VERSION_MAJOR "${MVK_VERSION_MAJOR_LINE}")
+string(REGEX MATCH "#define MVK_VERSION_MINOR   [0-9]+" MVK_VERSION_MINOR_LINE "${MVK_PRIVATE_API}")
+string(REGEX MATCH "[0-9]+" MVK_VERSION_MINOR "${MVK_VERSION_MINOR_LINE}")
+string(REGEX MATCH "#define MVK_VERSION_PATCH   [0-9]+" MVK_VERSION_PATCH_LINE "${MVK_PRIVATE_API}")
+string(REGEX MATCH "[0-9]+" MVK_VERSION_PATCH "${MVK_VERSION_PATCH_LINE}")
+set(MVK_VERSION "${MVK_VERSION_MAJOR}.${MVK_VERSION_MINOR}.${MVK_VERSION_PATCH}")
+message(STATUS "MoltenVK version: ${MVK_VERSION}")
+
+# Find required system libraries
+find_library(APPKIT_LIBRARY AppKit REQUIRED)
+find_library(FOUNDATION_LIBRARY Foundation REQUIRED)
+find_library(IOKIT_LIBRARY IOKit REQUIRED)
+find_library(IOSURFACE_LIBRARY IOSurface REQUIRED)
+find_library(METAL_LIBRARY Metal REQUIRED)
+find_library(QUARTZCORE_LIBRARY QuartzCore REQUIRED)
+
+# SPIRV-Cross
+option(SPIRV_CROSS_CLI "" OFF)
+option(SPIRV_CROSS_ENABLE_TESTS "" OFF)
+option(SPIRV_CROSS_ENABLE_HLSL "" OFF)
+option(SPIRV_CROSS_ENABLE_CPP "" OFF)
+option(SPIRV_CROSS_SKIP_INSTALL "" ON)
+add_subdirectory(SPIRV-Cross)
+
+# Common
+set(MVK_COMMON_DIR ${CMAKE_CURRENT_SOURCE_DIR}/MoltenVK/Common)
+file(GLOB_RECURSE MVK_COMMON_SOURCES CONFIGURE_DEPENDS
+    ${MVK_COMMON_DIR}/*.cpp
+    ${MVK_COMMON_DIR}/*.m
+    ${MVK_COMMON_DIR}/*.mm)
+set(MVK_COMMON_INCLUDES ${MVK_COMMON_DIR})
+
+add_library(MoltenVKCommon STATIC ${MVK_COMMON_SOURCES})
+target_include_directories(MoltenVKCommon PUBLIC ${MVK_COMMON_INCLUDES})
+target_compile_options(MoltenVKCommon PRIVATE -w)
+
+# MoltenVKShaderConverter
+set(MVK_SHADER_CONVERTER_DIR ${CMAKE_CURRENT_SOURCE_DIR}/MoltenVK/MoltenVKShaderConverter)
+file(GLOB_RECURSE MVK_SHADER_CONVERTER_SOURCES CONFIGURE_DEPENDS
+    ${MVK_SHADER_CONVERTER_DIR}/MoltenVKShaderConverter/*.cpp
+    ${MVK_SHADER_CONVERTER_DIR}/MoltenVKShaderConverter/*.m
+    ${MVK_SHADER_CONVERTER_DIR}/MoltenVKShaderConverter/*.mm)
+set(MVK_SHADER_CONVERTER_INCLUDES ${MVK_SHADER_CONVERTER_DIR} ${MVK_SHADER_CONVERTER_DIR}/include)
+
+add_library(MoltenVKShaderConverter STATIC ${MVK_SHADER_CONVERTER_SOURCES})
+target_include_directories(MoltenVKShaderConverter PUBLIC ${MVK_SHADER_CONVERTER_INCLUDES})
+target_compile_options(MoltenVKShaderConverter PRIVATE -w)
+target_link_libraries(MoltenVKShaderConverter PRIVATE spirv-cross-msl spirv-cross-reflect MoltenVKCommon)
+target_compile_definitions(MoltenVKShaderConverter PRIVATE MVK_EXCLUDE_SPIRV_TOOLS=1)
+
+# MoltenVK
+set(MVK_DIR ${CMAKE_CURRENT_SOURCE_DIR}/MoltenVK/MoltenVK)
+file(GLOB_RECURSE MVK_SOURCES CONFIGURE_DEPENDS
+    ${MVK_DIR}/MoltenVK/*.cpp
+    ${MVK_DIR}/MoltenVK/*.m
+    ${MVK_DIR}/MoltenVK/*.mm)
+file(GLOB MVK_SRC_INCLUDES LIST_DIRECTORIES ON ${MVK_DIR}/MoltenVK/*)
+set(MVK_INCLUDES
+    ${MVK_SRC_INCLUDES} ${MVK_GENERATED_INCLUDES} ${MVK_DIR}/include
+    ${MARATHON_RECOMP_THIRDPARTY_ROOT}/Vulkan-Headers/include)
+
+add_library(MoltenVK SHARED ${MVK_SOURCES})
+target_include_directories(MoltenVK PRIVATE ${MVK_INCLUDES})
+target_compile_options(MoltenVK PRIVATE -w)
+target_link_libraries(MoltenVK PRIVATE
+    ${APPKIT_LIBRARY} ${FOUNDATION_LIBRARY} ${IOKIT_LIBRARY} ${IOSURFACE_LIBRARY} ${METAL_LIBRARY} ${QUARTZCORE_LIBRARY}
+    spirv-cross-msl MoltenVKCommon MoltenVKShaderConverter)
+target_compile_definitions(MoltenVK PRIVATE MVK_FRAMEWORK_VERSION=${MVK_VERSION} MVK_USE_CEREAL=0)