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  Stackless KD-Tree Traversal for High Performance GPU Ray Tracing

Popov, S., Günther, J., Seidel, H.-P., & Slusallek, P. (2007). Stackless KD-Tree Traversal for High Performance GPU Ray Tracing. In D. Cohen-Or, & P. Slavik (Eds.), Eurographics 2007 (pp. 415-424). Oxford, UK: Blackwell.

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StacklessGPURT.pdf (Publisher version), 5KB
 
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 Creators:
Popov, Stefan1, Author           
Günther, Johannes2, Author           
Seidel, Hans-Peter2, Author           
Slusallek, Philipp, Author
Affiliations:
1International Max Planck Research School, MPI for Informatics, Max Planck Society, ou_1116551              
2Computer Graphics, MPI for Informatics, Max Planck Society, ou_40047              

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 Abstract: Significant advances have been achieved for realtime ray tracing recently, but realtime performance for complex scenes still requires large computational resources not yet available from the CPUs in standard PCs. Incidentally, most of these PCs also contain modern GPUs that do offer much larger raw compute power. However, limitations in the programming and memory model have so far kept the performance of GPU ray tracers well below that of their CPU counterparts. In this paper we present a novel packet ray traversal implementation that completely eliminates the need for maintaining a stack during kd-tree traversal and that reduces the number of traversal steps per ray. While CPUs benefit moderately from the stackless approach, it improves GPU performance significantly. We achieve a peak performance of over 16 million rays per second for reasonably complex scenes, including complex shading and secondary rays. Several examples show that with this new technique GPUs can actually outperform equivalent CPU based ray tracers.

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Language(s): eng - English
 Dates: 2008-02-282007
 Publication Status: Issued
 Pages: -
 Publishing info: Oxford, UK : Blackwell
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 356545
Other: Local-ID: C12573CC004A8E26-75606E8C6B6DADCDC12572F8003074FE-popov:07:GPURT
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Title: Untitled Event
Place of Event: Prague, Czech Republic
Start-/End Date: 2007-09-03 - 2007-09-07

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Title: Eurographics 2007
Source Genre: Proceedings
 Creator(s):
Cohen-Or, Daniel, Editor
Slavik, Pavel, Editor
Affiliations:
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Publ. Info: Oxford, UK : Blackwell
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 415 - 424 Identifier: -

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Title: Computer Graphics Forum
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