Skip to Main content Skip to Navigation
Journal articles

Packet-based Hierarchal Soft Shadow Mapping

Yang Baoguang 1, 2 Jieqing Feng 1 Gael Guennebaud 3, 4 Xinguo Liu 1
4 IPARLA - Visualization and manipulation of complex data on wireless mobile devices
Université Sciences et Technologies - Bordeaux 1, Inria Bordeaux - Sud-Ouest, École Nationale Supérieure d'Électronique, Informatique et Radiocommunications de Bordeaux (ENSEIRB), CNRS - Centre National de la Recherche Scientifique : UMR5800
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.
Document type :
Journal articles
Complete list of metadata

Cited literature [26 references]  Display  Hide  Download


https://hal.inria.fr/inria-00390541
Contributor : Gaël Guennebaud <>
Submitted on : Monday, May 23, 2011 - 4:14:37 PM
Last modification on : Thursday, February 11, 2021 - 2:58:35 PM
Long-term archiving on: : Wednesday, August 24, 2011 - 2:20:33 AM

Files

Packet-based_Hierarchal_Soft_S...
Files produced by the author(s)

Identifiers

  • HAL Id : inria-00390541, version 1

Collections

Citation

Yang Baoguang, Jieqing Feng, Gael Guennebaud, Xinguo Liu. Packet-based Hierarchal Soft Shadow Mapping. Computer Graphics Forum, Wiley, 2009, Proceedings of Eurographics Symposium on Rendering 2009, 28 (4), pp.1121--1130. ⟨inria-00390541⟩

Share

Metrics

Record views

614

Files downloads

1637