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VRCAI
2006
ACM

Parallel-split shadow maps for large-scale virtual environments

9 years 11 months ago
Parallel-split shadow maps for large-scale virtual environments
Shadowing effects dramatically enhance the realism of virtual environments by providing useful visual cues. Shadow mapping is an efficient algorithm for real-time shadow rendering, which is extensively adopted in real-time applications by its generality and efficiency. However, shadow mapping usually suffers from the inherent aliasing errors due to the image-based nature. In this paper, we present the Parallel-Split Shadow Maps (PSSMs) scheme, which splits the view frustum into different parts by using the planes parallel to the view plane and then generates multiple smaller shadow maps for the split parts. A fast and robust split strategy based on the analysis of shadow map aliasing has been proposed, which produces a moderate aliasing distribution over the whole depth range. By applying the geometry approximation procedure to each of the split parts instead of the whole scene, the tighter bounding shapes of visible objects enhance the utilization of the shadow map resolution. Hard...
Fan Zhang, Hanqiu Sun, Leilei Xu, Lee Kit Lun
Added 14 Jun 2010
Updated 14 Jun 2010
Type Conference
Year 2006
Where VRCAI
Authors Fan Zhang, Hanqiu Sun, Leilei Xu, Lee Kit Lun
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