Faster Deferred Rendering

3TATUK · 2013-10-17T03:14:43

Does anyone know any tip/tricks for speeding up deferred renderer gbuffer population? This is what I've come up with so far: A) only usetwo buffers: RGB diffuse, RGBA16F normal+depth in alpha B) attach DEPTH_COMPONENT32F to FBO C) reconstruct world position in screen-quad pass from normal buffer depth saved in alpha {texture2D().w} I drop from 240 FPS using forward rendering to 150 FPS with this deferred... Is that appropriate overhead? Or am I missing something? Also, with 60 lights, I drop below 60 FPS, even though I see these youtube demos of deferred rendering with hundreds of lights? I'm still doing the lighting in the geometry pass ... Is it somehow possible to do the lights in the screen-quad pass?