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Deep Coherent Ray Tracing

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3 Author(s)

Tracing secondary rays, such as reflection, refraction and shadow rays, can often be the most costly step in a modern real-time ray tracer. In this paper, we examine this problem by using suitable ray coherence measures and present a thorough evaluation of different reordering heuristics for secondary rays. We also present a simple system design for more coherent scene traversal by caching secondary rays and using sorted packet-tracing. Although the results are only slightly incremental to current research, we believe this study is an interesting contribution for further research in the field.

Published in:

Interactive Ray Tracing, 2007. RT '07. IEEE Symposium on

Date of Conference:

10-12 Sept. 2007