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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
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: |
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| 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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