We only uses one depth buffer now

src/Game/main.cpp

@@ -9,7 +9,9 @@ int main(int argc, char* argv[])
 
     Game game(argc, argv);
     while (game.Running()) {
+		PerformanceTimer::StartTimer("Game-Tick");
         game.Tick();
+		PerformanceTimer::StopTimer("Game-Tick");
     }
 
 	return 0;