An Optimized Soft Shadow Volume Algorithm with Real-Time Performance

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Date
2003
Authors
Assarsson, Ulf
Dougherty, Michael
Mounier, Michael
Akenine-Möller, Tomas
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
Abstract
In this paper, we present several optimizations to our previously presented soft shadow volume algorithm. Our optimizations include tighter wedges, heavily optimized pixel shader code for both rectangular and spherical light sources, a frame buffer blending technique to overcome the limitation of 8-bit frame buffers, and a simple culling algorithm. These together give real-time performance, and for simple models we get frame rates of over 150 fps. For more complex models 50 fps is normal. In addition to optimizations, two simple techniques for improving the visual quality are also presented.
Description

        
@inproceedings{
:10.2312/EGGH03/033-040
,
booktitle = {
Graphics Hardware
},
editor = {
M. Doggett and W. Heidrich and W. Mark and A. Schilling
},
title = {{
An Optimized Soft Shadow Volume Algorithm with Real-Time Performance
}},
author = {
Assarsson, Ulf
 and 
Dougherty, Michael
 and 
Mounier, Michael
 and 
Akenine-Möller, Tomas
},
year = {
2003
},
publisher = {
The Eurographics Association
},
ISSN = {
1727-3471
},
ISBN = {
1-58113-739-1
},
DOI = {
/10.2312/EGGH03/033-040
}
}
Citation
URI
https://doi.org/10.2312/EGGH03/033-040
Collections
EGGH03: SIGGRAPH/Eurographics Workshop on Graphics Hardware 2003