Packet-based Hierarchal Soft Shadow Mapping - Inria - Institut national de recherche en sciences et technologies du numérique Access content directly
Journal Articles Computer Graphics Forum Year : 2009

Packet-based Hierarchal Soft Shadow Mapping


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.
Fichier principal
Vignette du fichier
Packet-based_Hierarchal_Soft_Shadow_Mapping.pdf (1.21 Mo) Télécharger le fichier
Vignette du fichier
bridge1.jpg (59.95 Ko) Télécharger le fichier
Origin Files produced by the author(s)
Format Figure, Image

Dates and versions

inria-00390541 , version 1 (23-05-2011)


  • HAL Id : inria-00390541 , version 1


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


Gmail Mastodon Facebook X LinkedIn More