Split-Plane Shadow Volumes

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Date
2005
Authors
Laine, Samuli
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
Abstract
We present a novel method for rendering shadow volumes. The core idea of the method is to locally choose between Z-pass and Z-fail algorithms on a per-tile basis. The choice is made by comparing the contents of the low-resolution depth buffer against an automatically constructed split plane.We show that this reduces the number of stencil updates substantially without affecting the resulting shadows. We outline a simple and efficient hardware implementation that enables the early tile culling stages to reject considerably more pixels than with shadow volume optimizations currently available in the hardware.
Description

        
@inproceedings{
:10.2312/EGGH/EGGH05/023-033
,
booktitle = {
Graphics Hardware
},
editor = {
Michael Meissner and Bengt-Olaf Schneider
},
title = {{
Split-Plane Shadow Volumes
}},
author = {
Laine, Samuli
},
year = {
2005
},
publisher = {
The Eurographics Association
},
ISSN = {
1727-3471
},
ISBN = {
1-59593-086-8
},
DOI = {
/10.2312/EGGH/EGGH05/023-033
}
}
Citation
URI
https://doi.org/10.2312/EGGH/EGGH05/023-033
Collections
EGGH05: SIGGRAPH/Eurographics Workshop on Graphics Hardware 2005