Schizophrenic renderer when in fullscreen mode?

SDL Development
5

You can create a ‘target texture’ (separate from the backbuffer) to which all your rendering is done. Then, once a frame, you copy that texture to the backbuffer. So your updateScreen function becomes:

	SDL_SetRenderTarget(renderer, NULL);
	SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
	SDL_RenderClear(renderer);
	SDL_RenderCopy(renderer, texture, NULL, NULL);
	SDL_RenderPresent(renderer);
	SDL_SetRenderTarget(renderer, texture);

Now you can change just one pixel (or none) each frame.