Real-time approximate soft shadow rendering on GPU

Residential College	false
Status	已發表Published
	Real-time approximate soft shadow rendering on GPU
	Lu W.1; Meng W.1; Xue G.1; Wu E.1
	2009-03-01
Source Publication	Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao/Journal of Computer-Aided Design and Computer Graphics
ISSN	10039775
Volume	21 Issue:3
Abstract	This paper presents a real-time approximate soft shadow rendering algorithm which runs entirely on GPU by extending the shadow mapping algorithm. This is an algorithm with three passes. In the first pass the depth map is generated from the light view point. It is then followed with the second pass to extract the silhouette edge using geometry shader and to generate penumbra map by extending the silhouette vertex along the normal. The new generated primitive is automatically interpolated by GPU. For the part of the penumbra map which is occluded, it is diminated using the depth map generated in the first pass in fragment shader. For the overlapped part, a fake depth value is set for each of the fragments so that they will be blended automatically by hardware through depth comparison. In the rendering pass, for each fragment we first lookup the depth map to decide whether the fragment is in shadow. For those not in shadow, we lookup the penumbra map to get the penumbra value.
Keyword	Geometry shader Silhouette extraction Soft shadow
URL	View the original
Language	英語English
Fulltext Access	View Full-Text via Scopus
Document Type	Journal article
Collection	University of Macau
Affiliation	1.Institute of Software Chinese Academy of Sciences 2.Universidade de Macau 3.University of Chinese Academy of Sciences
Recommended Citation GB/T 7714	Lu W.,Meng W.,Xue G.,et al. Real-time approximate soft shadow rendering on GPU[J]. Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao/Journal of Computer-Aided Design and Computer Graphics, 2009, 21(3).
APA	Lu W.., Meng W.., Xue G.., & Wu E. (2009). Real-time approximate soft shadow rendering on GPU. Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao/Journal of Computer-Aided Design and Computer Graphics, 21(3).
MLA	Lu W.,et al."Real-time approximate soft shadow rendering on GPU".Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao/Journal of Computer-Aided Design and Computer Graphics 21.3(2009).

Files in This Item:
There are no files associated with this item.

If you have any objections to this item, please fill out the form below and the administrator will contact you as soon as possible.
Content:
Email：	*
Affiliation No.
Verification Code:	Refresh

Any comments and suggestions are welcomed.
Title:	*
Content:
Email：	*
Verification Code:	Refresh