Warping and Partitioning for Low Error Shadow Maps

Lloyd, D. Brandon; Tuft, David; Yoon, Sung-eui; Manocha, Dinesh

Warping and Partitioning for Low Error Shadow Maps

Files

215-226.pdf (946.38 KB)

Date

2006

Authors

Lloyd, D. Brandon
Tuft, David
Yoon, Sung-eui
Manocha, Dinesh

Publisher

The Eurographics Association

Abstract

We evaluate several shadow map algorithms based on warping and partitioning using the maximum perspective aliasing error over the entire view frustum. With respect to our error metric, we show that a range of warping parameters corresponding to several previous warping algorithms have the same error. We also analyze several partitioning schemes to determine which produces the least maximum error using the least number of partitions. Finally, we show how warping and partitioning can be combined for interactive rendering of low error shadows in scenes with a high depth range.

        @inproceedings{:10.2312/EGWR/EGSR06/215-226
,
booktitle = {Symposium on Rendering
},
editor = {Tomas Akenine-Moeller and Wolfgang Heidrich
},
title = {{Warping and Partitioning for Low Error Shadow Maps
}},
author = {Lloyd, D. Brandon and 
Tuft, David and 
Yoon, Sung-eui and 
Manocha, Dinesh
},
year = {2006
},
publisher = {The Eurographics Association
},
ISSN = {1727-3463
},
ISBN = {3-905673-35-5
},
DOI = {/10.2312/EGWR/EGSR06/215-226
}
}