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Decoupled ray-marching of heterogeneous participating media

Published: 07 August 2011 Publication History

Abstract

We describe the integration of heterogeneous participating media into our production ray tracer. We specifically focus on the problem of computing the lighting without incurring a quadratic number of shader evaluations. The main difficulty in rendering volumes comes from the inability to analytically importance sample the transmission term:
[EQUATION]

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session video (tk050_11.mp4)

References

[1]
Lokovic, T., and Veach, E. 2000. Deep shadow maps. In Proceedings of the 27th annual conference on Computer graphics and interactive techniques, ACM Press/Addison-Wesley Publishing Co., New York, NY, USA, SIGGRAPH '00, 385--392.
[2]
Perlin, K., and Hoffert, E. M. 1989. Hypertexture. SIGGRAPH Comput. Graph. 23 (July), 253--262.
[3]
Yue, Y., Iwasaki, K., Chen, B.-Y., Dobashi, Y., and Nishita, T. 2010. Unbiased, adaptive stochastic sampling for rendering inhomogeneous participating media. ACM Trans. Graph. 29 (December), 177:1--177:8.

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      cover image ACM Conferences
      SIGGRAPH '11: ACM SIGGRAPH 2011 Talks
      August 2011
      73 pages
      ISBN:9781450309745
      DOI:10.1145/2037826
      • Conference Chair:
      • Mark Elendt
      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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      Published: 07 August 2011

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