Real-time Soft Shadow Mapping by Backprojection

Guennebaud, Gaël; Barthe, Loïc; Paulin, Mathias

Real-time Soft Shadow Mapping by Backprojection

Files

227-234.pdf (435.53 KB)

Date

2006

Authors

Guennebaud, Gaël
Barthe, Loïc
Paulin, Mathias

Publisher

The Eurographics Association

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.

        @inproceedings{:10.2312/EGWR/EGSR06/227-234
,
booktitle = {Symposium on Rendering
},
editor = {Tomas Akenine-Moeller and Wolfgang Heidrich
},
title = {{Real-time Soft Shadow Mapping by Backprojection
}},
author = {Guennebaud, Gaël and 
Barthe, Loïc and 
Paulin, Mathias
},
year = {2006
},
publisher = {The Eurographics Association
},
ISSN = {1727-3463
},
ISBN = {3-905673-35-5
},
DOI = {/10.2312/EGWR/EGSR06/227-234
}
}