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Interactive voxelized epipolar shadow volumes

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Chris WymanAuthors Info & Claims

SA '10: ACM SIGGRAPH ASIA 2010 Sketches

Article No.: 53, Pages 1 - 2

https://doi.org/10.1145/1899950.1900003

Published: 15 December 2010 Publication History

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Abstract

Current algorithms for rendering shadows inside participating media hit a bottleneck when computing light visibility throughout the media. These algorithms rely either on sampling along viewing rays, often thrashing memory caches, or slower analytic solutions using object-space computations, such as shadow volumes.

We present a new cache-coherent sampling technique that computes volumetric light visibility that requires as little as one texture lookup per pixel. We efficiently voxelize shadow volumes in epipolar-space using standard parallel scan operations. The only step dependent on geometric complexity is an image-space voxelization [Eisemann and Décoret 2006] that often takes under a millisecond. This allows us to render shadows in participating media at up to 300 frames per second.

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References

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Billeter, M., Sintorn, E., and Assarsson, U. 2010. Real time volumetric shadows using polygonal light volumes. In Proc. High Performance Graphics, 39--45.

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Cited By

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Eisemann EAssarsson USchwarz MValient MWimmer M(2013)Efficient real-time shadowsACM SIGGRAPH 2013 Courses10.1145/2504435.2504453(1-54)Online publication date: 21-Jul-2013
https://dl.acm.org/doi/10.1145/2504435.2504453
Woo APoulin P(2012)BibliographyShadow Algorithms Data Miner10.1201/b11901-9(197-238)Online publication date: 23-Aug-2012
https://doi.org/10.1201/b11901-9
Eisemann EAssarsson USchwarz MValient MWimmer M(2012)Efficient real-time shadowsACM SIGGRAPH 2012 Courses10.1145/2343483.2343500(1-53)Online publication date: 5-Aug-2012
https://dl.acm.org/doi/10.1145/2343483.2343500

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Information & Contributors

Information

Published In

SA '10: ACM SIGGRAPH ASIA 2010 Sketches

December 2010

98 pages

ISBN:9781450305235

DOI:10.1145/1899950

Conference Chairs:
Marie-Paule Cani
Grenoble Universités & INRIA
,
Alla Sheffer
The University of British Columbia

Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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SIGCHI: ACM Special Interest Group on Computer-Human Interaction

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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 15 December 2010

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SIGGRAPH

SA '10: SIGGRAPH ASIA 2010

December 15 - 18, 2010

Seoul, Republic of Korea

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Overall Acceptance Rate 178 of 869 submissions, 20%

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Eisemann EAssarsson USchwarz MValient MWimmer M(2013)Efficient real-time shadowsACM SIGGRAPH 2013 Courses10.1145/2504435.2504453(1-54)Online publication date: 21-Jul-2013
https://dl.acm.org/doi/10.1145/2504435.2504453
Woo APoulin P(2012)BibliographyShadow Algorithms Data Miner10.1201/b11901-9(197-238)Online publication date: 23-Aug-2012
https://doi.org/10.1201/b11901-9
Eisemann EAssarsson USchwarz MValient MWimmer M(2012)Efficient real-time shadowsACM SIGGRAPH 2012 Courses10.1145/2343483.2343500(1-53)Online publication date: 5-Aug-2012
https://dl.acm.org/doi/10.1145/2343483.2343500

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