Add basic cmake configuration for slang

Signed-off-by: Tobias Frisch <tfrisch@uni-koblenz.de>

modules/shader_compiler/CMakeLists.txt

@@ -53,6 +53,9 @@ include(config/GLSLANG.cmake)
 include(config/Murmur3.cmake)
 include(config/Shady.cmake)
 
+# Check and load SLANG
+include(config/SLANG.cmake)
+
 # link the required libraries to the module
 target_link_libraries(vkcv_shader_compiler ${vkcv_shader_compiler_libraries} vkcv)
 

modules/shader_compiler/config/SLANG.cmake

+
+use_git_submodule("${vkcv_shader_compiler_lib_path}/slang" slang_status)
+
+if (${slang_status})
+	add_subdirectory(config/slang)
+	
+	list(APPEND vkcv_shader_compiler_libraries slang)
+	list(APPEND vkcv_shader_compiler_includes ${vkcv_shader_compiler_lib})
+endif ()

modules/shader_compiler/config/slang/CMakeLists.txt

+cmake_minimum_required(VERSION 3.9)
+
+project(slang)
+
+# settings c++ standard for slang
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+find_package(Vulkan REQUIRED)
+
+set(slang_base external/source/base)
+
+set(slang_dir ../../${vkcv_shader_compiler_lib}/slang)
+
+set(slang_source ${slang_dir}/source)
+set(slang_source_compiler_core ${slang_source}/compiler-core)
+set(slang_source_core ${slang_source}/core)
+set(slang_source_slang ${slang_source}/slang)
+
+file(GLOB slang_sources 
+        ${slang_source_compiler_core}/*.cpp
+        ${slang_source_core}/*.cpp
+        ${slang_source_slang}/*.cpp
+)
+
+if (${VMA_STATIC_VULKAN_FUNCTIONS})
+	add_library(slang STATIC ${slang_sources})
+else()
+	add_library(slang SHARED ${slang_sources})
+endif()
+
+set_target_properties(
+        slang PROPERTIES
+		
+		CXX_EXTENSIONS OFF
+		CXX_STANDARD ${CMAKE_CXX_STANDARD}
+		CXX_STANDARD_REQUIRED ON
+)
+
+target_include_directories(slang PUBLIC ${slang_base} ${slang_source})
+
+# Only link to Vulkan if static linking is used
+if (NOT ${VMA_DYNAMIC_VULKAN_FUNCTIONS})
+	target_link_libraries(slang PUBLIC Vulkan::Vulkan)
+endif()