Yi Xiao, Chi Sing Leung, Tze Yui Ho, Liang Wan and Tien Tsing Wong Concentric Spherical Representation for Omnidirectional Soft Shadow Computer Graphics Forum 32
Soft shadows play an important role in photo-realistic rendering. Although there are many efficient soft shadow algorithms, most of them focus on the one-side light source situation, where a planar light source is on the outside of the scene. In fact, in many situations, such as games, light sources are omnidirectional. They may be surrounded by a number of 3D objects. This paper proposes a soft shadow algorithm for the omnidirectional situation.
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