forget to invert frametime from framerate

src/renderer.cpp

@@ -105,7 +105,7 @@ renAllocateGroup(uint entity_count, shader_wrapper shader)
 void
 renDoRenderLoop(render_state* rs, uint framerate, frame_callback_fn cb_func)
 {
-	uint delay = (framerate > 0) ? framerate : 0;
+	uint delay = (framerate > 0) ? 1 / framerate : 0;
 	uint frameStart, frameTime;
 	bool running = true;
 	SDL_Event e;