Method GetProgram

pcsx2/GS/Renderers/OpenGL/GLShaderCache.cpp:271–321

}

std::optional<GLProgram> GLShaderCache::GetProgram(
	const std::string_view vertex_shader, const std::string_view fragment_shader, const PreLinkCallback& callback)
{
	if (!m_program_binary_supported || !m_blob_file)
	{
#ifdef PCSX2_DEVBUILD
		Common::Timer timer;
#endif

		std::optional<GLProgram> res = CompileProgram(vertex_shader, fragment_shader, callback, false);

#ifdef PCSX2_DEVBUILD
		Console.WriteLn("Time to compile shader without caching: %.2fms", timer.GetTimeMilliseconds());
#endif
		return res;
	}

	const auto key = GetCacheKey(vertex_shader, fragment_shader);
	auto iter = m_index.find(key);
	if (iter == m_index.end())
		return CompileAndAddProgram(key, vertex_shader, fragment_shader, callback);

	std::vector<u8> data(iter->second.blob_size);
	if (std::fseek(m_blob_file, iter->second.file_offset, SEEK_SET) != 0 ||
		std::fread(data.data(), 1, iter->second.blob_size, m_blob_file) != iter->second.blob_size)
	{
		Console.Error("Read blob from file failed");
		return {};
	}

#ifdef PCSX2_DEVBUILD
	Common::Timer timer;
#endif

	GLProgram prog;
	if (prog.CreateFromBinary(data.data(), static_cast<u32>(data.size()), iter->second.blob_format))
	{
#ifdef PCSX2_DEVBUILD
		Console.WriteLn("Time to create program from binary: %.2fms", timer.GetTimeMilliseconds());
#endif

		return std::optional<GLProgram>(std::move(prog));
	}

	Console.Warning(
		"Failed to create program from binary, this may be due to a driver or GPU Change. Recreating cache.");
	if (!Recreate())
		return CompileProgram(vertex_shader, fragment_shader, callback, false);
	else
		return CompileAndAddProgram(key, vertex_shader, fragment_shader, callback);
}

bool GLShaderCache::GetProgram(GLProgram* out_program, const std::string_view vertex_shader,
	const std::string_view fragment_shader, const PreLinkCallback& callback /* = */)