Function LoadShaders

source/common/rendering/gl/gl_shader.cpp:117–164

}

static void LoadShaders()
{
	static bool loaded = false;
	if (loaded)
		return;
	loaded = true;

	try
	{
		FString path = CreateProgramCacheName(false);
		FileReader fr;
		if (!fr.OpenFile(path.GetChars()))
			I_Error("Could not open shader file");

		char magic[4];
		fr.Read(magic, 4);
		if (memcmp(magic, ShaderMagic, 4) != 0)
			I_Error("Not a shader cache file");

		uint32_t count = fr.ReadUInt32();
		if (count > 512)
			I_Error("Too many shaders cached");

		for (uint32_t i = 0; i < count; i++)
		{
			char hexdigest[33];
			if (fr.Read(hexdigest, 32) != 32)
				I_Error("Read error");
			hexdigest[32] = 0;

			std::unique_ptr<ProgramBinary> binary(new ProgramBinary());
			binary->format = fr.ReadUInt32();
			uint32_t size = fr.ReadUInt32();
			if (size > 1024 * 1024)
				I_Error("Shader too big, probably file corruption");

			binary->data.Resize(size);
			if (fr.Read(binary->data.Data(), binary->data.Size()) != binary->data.Size())
				I_Error("Read error");

			ShaderCache[hexdigest] = std::move(binary);
		}
	}
	catch (...)
	{
		ShaderCache.clear();
	}
}

static void SaveShaders()
{