Runtime ShaderCompilation with Include Features

.idea/.name

@@ -1 +1 @@
-OpenVulkano
+openVulkanoCpp

cmake/SetupVulkan.cmake

@@ -4,7 +4,17 @@ function(SetupVulkan TARGET)
         target_link_libraries(${TARGET} PRIVATE ${MoltenVK_LIBRARIES})
     else ()
         find_package(Vulkan REQUIRED)
+        get_filename_component(Vulkan_SDK_DIR "${Vulkan_LIBRARIES}" DIRECTORY) # Get VulkanSDK/[version]/Bin
         target_link_libraries(${TARGET} PRIVATE Vulkan::Vulkan)
+        if(CMAKE_BUILD_TYPE MATCHES "Debug")
+            target_link_libraries(${TARGET} PRIVATE "${Vulkan_SDK_DIR}/shaderc_combinedd.lib" 
+            "${Vulkan_SDK_DIR}/spirv-cross-cored.lib" "${Vulkan_SDK_DIR}/spirv-cross-glsld.lib" 
+            "${Vulkan_SDK_DIR}/spirv-cross-hlsld.lib")
+        else()
+            target_link_libraries(${TARGET} PRIVATE "${Vulkan_SDK_DIR}/shaderc_combined.lib" 
+			"${Vulkan_SDK_DIR}/spirv-cross-core.lib" "${Vulkan_SDK_DIR}/spirv-cross-glsl.lib" 
+			"${Vulkan_SDK_DIR}/spirv-cross-hlsl.lib")
+        endif()
     endif ()
     target_include_directories(${TARGET} PUBLIC ${Vulkan_INCLUDE_DIR})
 
@@ -17,4 +27,5 @@ function(SetupVulkan TARGET)
         find_package(XCB REQUIRED)
         target_link_libraries(${TARGET} PRIVATE ${XCB_LIBRARIES})
     endif()
-endfunction()
+endfunction()
+

examples/main.cpp

@@ -17,10 +17,17 @@
 #include <vector>
 #include <string>
 
+#include "Shader/ShaderCompiler.hpp"
+
 using namespace OpenVulkano;
 
 int main(int argc, char** argv)
 {
+	// TEST CASE
+	if (false)
+		ShaderCompiler::CompileGLSLToSpirv(R"(D:\Projects\OpenVulkano\openVulkanoCpp\Shader\grid.vert)", "", "main",
+		                                   shaderc_vertex_shader, false);
+
 	std::vector<std::string> examples = {
 		"Cubes Example App",
 		"Moving Cube Example App",

openVulkanoCpp/Shader/ShaderCompiler.cpp

@@ -0,0 +1,100 @@
+#include "ShaderCompiler.hpp"
+
+namespace OpenVulkano
+{
+	Unique<void*> ShaderCompiler::CompileGLSLToSpirv(const std::string& absPath, const std::string& incPath,
+	                                                 const std::string& entryPoint, shaderc_shader_kind shaderStage,
+	                                                 bool bHaveIncludes)
+	{
+		Array<char> file = Utils::ReadFile(absPath, false, true);
+
+#if defined(_DEBUG)
+		printf("Compiling shader: %s\n", absPath.c_str());
+		printf("%s\n", file.Data() + 1);
+#endif
+
+		shaderc::Compiler shaderCompiler;
+		shaderc::CompileOptions options;
+
+		if (bHaveIncludes) options.SetIncluder(std::make_unique<ShaderIncluder>(incPath));
+		options.SetSourceLanguage(shaderc_source_language_glsl);
+		options.SetSuppressWarnings();
+
+		shaderc::PreprocessedSourceCompilationResult preResult =
+		shaderCompiler.PreprocessGlsl(file.Data(), shaderStage, entryPoint.c_str(), options);
+
+		if (preResult.GetCompilationStatus() != shaderc_compilation_status_success)
+		{
+			throw std::runtime_error("Failed to preprocess shader: " + preResult.GetErrorMessage());
+			return nullptr;
+		}
+
+		shaderc::CompilationResult result =
+		shaderCompiler.CompileGlslToSpv(static_cast<const char*>(preResult.begin()), shaderStage, "", options);
+
+		if (result.GetCompilationStatus() != shaderc_compilation_status_success)
+		{
+			throw std::runtime_error("Failed to compile shader: " + result.GetErrorMessage());
+			return nullptr;
+		}
+
+		Unique<void*> spirv = std::make_unique<void*>((void*) result.begin());
+		return spirv;
+	}
+
+	ShaderIncluder::ShaderIncluder(const std::string& path)
+	{
+		// TODO : Add the path to your include folder
+		m_includes.push_back(path);
+	}
+
+	shaderc_include_result* ShaderIncluder::GetInclude(const char* requested_source, shaderc_include_type type,
+	                                                   const char* requesting_source, uint64_t include_depth)
+	{
+		const char* includePath = GetActualPath(requested_source);
+		const char* content = RecordInclude(includePath);
+
+		shaderc_include_result* result = new shaderc_include_result();
+		result->content = content;
+		result->content_length = strlen(content);
+		result->source_name = includePath;
+		result->source_name_length = strlen(includePath);
+		result->user_data = nullptr;
+
+		return result;
+	}
+
+	void ShaderIncluder::ReleaseInclude(shaderc_include_result* data) { delete data; }
+
+	std::string ShaderIncluder::ResolveInclude(const std::string requestedSource)
+	{
+		// Check if the file exists in the include paths
+		for (const std::string& includePath: m_includes)
+		{
+			std::string path = includePath + requestedSource;
+			return path;
+		}
+
+		return "";
+	}
+
+	const char* ShaderIncluder::RecordInclude(const std::string& requestedSource)
+	{
+		Array<char> data = Utils::ReadFile(requestedSource);
+
+		char* result = new char[data.Size() + 1];
+		strcpy_s(result, data.Size(), data.Data());
+
+		return result;
+	}
+
+	const char* ShaderIncluder::GetActualPath(const std::string& requestedSource)
+	{
+		std::string includePath = ResolveInclude(requestedSource);
+
+		char* result = new char[includePath.size() + 1];
+		strcpy_s(result, includePath.size(), includePath.c_str());
+
+		return result;
+	}
+}

openVulkanoCpp/Shader/ShaderCompiler.hpp

@@ -0,0 +1,45 @@
+#pragma once
+
+#include "Base/Utils.hpp"
+#include "Base/Wrapper.hpp"
+
+#include <spirv_cross/spirv_hlsl.hpp>
+#include <spirv_cross/spirv_glsl.hpp>
+#include <shaderc/shaderc.hpp>
+
+namespace OpenVulkano
+{
+	class ShaderIncluder : public shaderc::CompileOptions::IncluderInterface
+	{
+	public:
+		ShaderIncluder(const std::string& path);
+		~ShaderIncluder() override = default;
+
+		shaderc_include_result* GetInclude(const char* requested_source, shaderc_include_type type,
+		                                   const char* requesting_source, uint64_t include_depth) override;
+		void ReleaseInclude(shaderc_include_result* data) override;
+
+	private:
+		std::string ResolveInclude(const std::string requestedSource);
+		const char* RecordInclude(const std::string& requestedSource);
+		const char* GetActualPath(const std::string& requestedSource);
+
+	private:
+		std::vector<std::string> m_includes;
+	};
+
+	class ShaderCompiler
+	{
+	public:
+		/**
+		 * @param absPath - absolute path of the shader that needs to be compiled
+		 * @param incPath - include path that will be used to resolve includes
+		 * @param entryPoint - the name of the void function in the shader
+		 * @param shaderStage - type of the shader that needs to be compiled
+		 * @param bHaveIncludes - if incPath is empty, make it false
+		 */
+		static Unique<void*> CompileGLSLToSpirv(const std::string& absPath,
+		                                       const std::string& incPath, const std::string& entryPoint,
+		                                       shaderc_shader_kind shaderStage, bool bHaveIncludes);
+	};
+}

openVulkanoCpp/Vulkan/Resources/ManagedBuffer.hpp

@@ -27,6 +27,10 @@ namespace OpenVulkano::Vulkan
 		vk::MemoryPropertyFlags properties;
 		void* mapped = nullptr;
 
+		ManagedBuffer(MemoryAllocation* alloc, vk::DeviceSize offset, vk::DeviceSize size, vk::Buffer buffer, vk::BufferUsageFlags usageFlags, vk::MemoryPropertyFlags  memProperties)
+				: allocation(alloc), offset(offset), size(size), buffer(buffer), usage(usageFlags), properties(memProperties), mapped(nullptr)
+		{}
+
 		~ManagedBuffer()
 		{
 			allocation->device.destroy(buffer);

openVulkanoCpp/Vulkan/Resources/MemoryPool.cpp

@@ -131,7 +131,7 @@ namespace OpenVulkano::Vulkan
 		uint32_t offset = Utils::Align(allocation->used, memoryRequirements.alignment);
 		device->device.bindBufferMemory(buffer, allocation->memory, offset);
 		allocation->used += size + (offset - allocation->used);
-		return ManagedBufferPtr{ new ManagedBuffer({allocation, offset, size, buffer, usage, properties, nullptr}) };
+		return ManagedBufferPtr{ new ManagedBuffer(allocation, offset, size, buffer, usage, properties) };
 	}
 
 	MemoryPool::ManagedBufferPtr MemoryPool::CreateSharedMemoryBuffer(size_t size)
@@ -150,4 +150,9 @@ namespace OpenVulkano::Vulkan
 		}
 		return CreateBuffer(size, vk::BufferUsageFlagBits::eVertexBuffer, vk::MemoryPropertyFlagBits::eHostCoherent/* | vk::MemoryPropertyFlagBits::eDeviceLocal*/);
 	}
+
+	void ManagedBufferDeleter::operator()(ManagedBuffer* buffer)
+	{
+		MemoryPool::ReleaseBuffer(buffer);
+	}
 }

openVulkanoCpp/Vulkan/Resources/MemoryPool.hpp

@@ -17,7 +17,11 @@ namespace OpenVulkano::Vulkan
 	class Device;
 	class MemoryAllocation;
 	class ManagedBuffer;
-	struct ManagedBufferDeleter;
+
+	struct ManagedBufferDeleter
+	{
+		void operator()(ManagedBuffer* buffer);
+	};
 
 	class MemoryPool
 	{
@@ -55,12 +59,4 @@ namespace OpenVulkano::Vulkan
 
 		static void ReleaseBuffer(ManagedBuffer* buffer);
 	};
-
-	struct ManagedBufferDeleter
-	{
-		void operator()(ManagedBuffer* buffer)
-		{
-			MemoryPool::ReleaseBuffer(buffer);
-		}
-	};
 }