multiRender

This is intermediate phase (before blurring) of screen space ambient occlusion (SSAO) effect. Benefit of SSAO is that it does not require ambient occlusion baked in the textures, so it

1. Saves ram (valuable especially on consoles and mobile)
2. Saves development time as no precomputation is needed
3. Works with dynamic scenes which is a major benefit (see physics-sim.mpg).