Poisson disk ray-marched ambient occlusion.
I3D '11: Symposium on Interactive 3D Graphics and Games San Francisco California February, 2011(2011)
摘要
Ambient occlusion (AO) [Pharr and Green 2004] provides an approximation to global illumination. It can be computed in real-time if restricted to screen-space [Mittring 2007; Loos and Sloan 2010], at the cost of an approximation of solutions computed in geometric space, thus introducing a loss of quality.
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