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Packet-based Hierarchal Soft Shadow Mapping
Abstract : Recent soft shadow mapping techniques based on back-projection can render high quality soft shadows in real time. However, real time high quality rendering of large penumbrae is still challenging, especially when multi-layer shadow maps are used to reduce single light sample silhouette artifact. In this paper, we present an efficient algorithm to attack this problem. We first present a GPU-friendly packet-based approach rendering a packet of neighboring pixels together to amortize the cost of computing visibility factors. Then, we propose a hierarchical technique to quickly locate the contour edges, further reducing the computation cost. At last, we suggest a multi-view shadow map approach to reduce the single light sample artifact. We also demonstrate its higher image quality and higher efficiency compared to the existing depth peeling approaches.
Cited literature [26 references]
https://hal.inria.fr/inria-00390541
Contributor : Gaël Guennebaud Connect in order to contact the contributor
Submitted on : Monday, May 23, 2011 - 4:14:37 PM
Last modification on : Monday, December 20, 2021 - 4:50:11 PM
Long-term archiving on: : Wednesday, August 24, 2011 - 2:20:33 AM
Contributor : Gaël Guennebaud Connect in order to contact the contributor
Submitted on : Monday, May 23, 2011 - 4:14:37 PM
Last modification on : Monday, December 20, 2021 - 4:50:11 PM
Long-term archiving on: : Wednesday, August 24, 2011 - 2:20:33 AM
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