Most games haven't rendered directly into the "screen buffer" for 15-20 years.
Vast majority of titles use deferred rendering, and lighting is done off screen too. Usually the only thing done to the "screen buffer" is a final post-process pass or a copy.
Vast majority of titles use deferred rendering, and lighting is done off screen too. Usually the only thing done to the "screen buffer" is a final post-process pass or a copy.