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Parallel path tracing using incoherent path-atom binning

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Coulthurst, David, Dubla, Piotr, Debattista, Kurt, McIntosh-Smith, Simon and Chalmers, Alan (2008) Parallel path tracing using incoherent path-atom binning. In: SCCG08 Spring Conference on Computer Graphics, Budmerice Castle, Slovakia, 21-23 Apr 2008. Published in: Proceedings of the 24th Spring Conference on Computer Graphics pp. 91-95. doi:10.1145/1921264.1921275 ISSN 9781605589572.

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Official URL: http://dx.doi.org/10.1145/1921264.1921275

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Abstract

Current parallel graphics algorithms minimise memory access latency by tracing packets of coherent rays. This coherency, however, breaks down after several bounces, and is unsuited to acceleration techniques such as selective rendering. This paper presents an unbiased path tracing algorithm which is insensitive to the coherency of the rays traced, allowing it to run on diverse architectures including massively SIMD processors. Bins of path-atoms are created and processed to form a path tracing circular buffer. Latency is hidden by n-buffering the load/save operations between bins. We demonstrate our approach as an implementation on the massively parallel SIMD architecture, the ClearSpeed CSX600.

Item Type: Conference Item (Paper)
Divisions: Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group)
Journal or Publication Title: Proceedings of the 24th Spring Conference on Computer Graphics
Publisher: ACM
ISSN: 9781605589572
Book Title: Proceedings of the 24th Spring Conference on Computer Graphics - SCCG '08
Official Date: 2008
Dates:
DateEvent
2008Published
Page Range: pp. 91-95
DOI: 10.1145/1921264.1921275
Status: Peer Reviewed
Publication Status: Published
Conference Paper Type: Paper
Title of Event: SCCG08 Spring Conference on Computer Graphics
Type of Event: Conference
Location of Event: Budmerice Castle, Slovakia
Date(s) of Event: 21-23 Apr 2008

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