Function LoadDXShader

BeefySysLib/platform/win/DXRenderDevice.cpp:237–335

static Func_D3DX10Compile gFunc_D3DX10Compile;

static bool LoadDXShader(const StringImpl& filePath, const StringImpl& entry, const StringImpl& profile, ID3D10Blob** outBuffer)
{
	HRESULT hr;
	String outObj = filePath + "_" + entry + "_" + profile;

	bool useCache = false;
	auto srcDate = ::BfpFile_GetTime_LastWrite(filePath.c_str());
	auto cacheDate = ::BfpFile_GetTime_LastWrite(outObj.c_str());
	if ((cacheDate != 0) && (cacheDate >= srcDate))
		useCache = true;

	if (!useCache)
	{
		if (gFunc_D3DX10CompileFromFileW == NULL)
		{
			auto lib = LoadLibraryA("D3DCompiler_47.dll");
			if (lib != NULL)
				gFunc_D3DX10CompileFromFileW = (Func_D3DX10CompileFromFileW)::GetProcAddress(lib, "D3DCompileFromFile");
		}

		if (gFunc_D3DX10CompileFromFileW == NULL)
			useCache = true;
	}

	if (!useCache)
	{
		bool useCompile = true;

		HRESULT dxResult;
		ID3D10Blob* errorMessage = NULL;
		if (useCompile)
		{
			if (gFunc_D3DX10Compile == NULL)
			{
				auto lib = LoadLibraryA("D3DCompiler_47.dll");
				if (lib != NULL)
					gFunc_D3DX10Compile = (Func_D3DX10Compile)::GetProcAddress(lib, "D3DCompile");
			}

			int memSize = 0;
			uint8* memPtr = LoadBinaryData(filePath, &memSize);

			dxResult = gFunc_D3DX10Compile(memPtr, memSize, "Shader", NULL, NULL, entry.c_str(), profile.c_str(),
				D3D10_SHADER_DEBUG | D3D10_SHADER_ENABLE_STRICTNESS, 0, outBuffer, &errorMessage);
		}
		else
		{
			if (gFunc_D3DX10CompileFromFileW == NULL)
			{
				auto lib = LoadLibraryA("D3DCompiler_47.dll");
				if (lib != NULL)
					gFunc_D3DX10CompileFromFileW = (Func_D3DX10CompileFromFileW)::GetProcAddress(lib, "D3DCompileFromFile");
			}
			
			dxResult = gFunc_D3DX10CompileFromFileW(UTF8Decode(filePath).c_str(), NULL, NULL, entry.c_str(), profile.c_str(),
				D3D10_SHADER_DEBUG | D3D10_SHADER_ENABLE_STRICTNESS, 0, outBuffer, &errorMessage);
		}