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CGF
2005
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13 years 11 months ago
Hierarchical Penumbra Casting
We present a novel algorithm for rendering physically-based soft shadows in complex scenes. Instead of casting shadow rays, we place both the points to be shaded and the samples o...
Samuli Laine, Timo Aila
SIGGRAPH
1992
ACM
14 years 3 months ago
Computing the antipenumbra of an area light source
We define the antiumbra and the antipenumbra of a convex area light source shining through a sequence of convex areal holes in three dimensions. The antiumbra is the volume from w...
Seth J. Teller