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Real-time Soft Shadow Mapping by Backprojection

Gael Guennebaud 1, * Loic Barthe 2 Mathias Paulin 2 
* Corresponding author
2 IRIT-VORTEX - Visual Objects from Reality To Expression
IRIT - Institut de recherche en informatique de Toulouse
Abstract : We present a new real-time soft shadow algorithm using a single shadow map per light source. Therefore, our algorithm is well suited to render both complex and dynamic scenes, and it handles all rasterizable geometries. The key idea of our method is to use the shadow map as a simple and uniform discretized represention of the scene, thus allowing us to generate realistic soft shadows in most cases. In particular it naturally handles occluder fusion. Also, our algorithm deals with rectangular light sources as well as textured light sources with high precision, and it maps well to programmable graphics hardware.
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Conference papers
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Contributor : Gaël Guennebaud Connect in order to contact the contributor
Submitted on : Wednesday, January 21, 2009 - 4:50:55 PM
Last modification on : Monday, July 4, 2022 - 8:48:23 AM


  • HAL Id : inria-00355020, version 1


Gael Guennebaud, Loic Barthe, Mathias Paulin. Real-time Soft Shadow Mapping by Backprojection. Eurographics Symposium on Rendering 2006, Jun 2006, Nicosia, Cyprus. pp.227-234. ⟨inria-00355020⟩



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