Real-Time Rendering of Rough Refraction

Charles de Rousiers; Adrien Bousseau; Kartic Subr; Nicolas Holzschuch; Ravi Ramamoorthi

doi:10.1109/TVCG.2011.282

Journal Articles IEEE Transactions on Visualization and Computer Graphics Year : 2012

Real-Time Rendering of Rough Refraction

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Charles de Rousiers

Function : Author
PersonId : 884947

Models and Algorithms for Visualization and Rendering

Adrien Bousseau

Function : Author
PersonId : 912884
IdHAL : adrien-bousseau
ORCID : 0000-0002-8003-9575

Rendering and virtual environments with sound

Kartic Subr

Function : Author
PersonId : 906450

Department of Computer science [University College of London]

Nicolas Holzschuch

Function : Author
PersonId : 502
IdHAL : nicolas-holzschuch
ORCID : 0000-0002-5673-6960
IdRef : 136663982

Models and Algorithms for Visualization and Rendering

Ravi Ramamoorthi

Function : Author

Department of Electrical Engineering and Computer Science [Berkeley]

Abstract

We present an algorithm to render objects made of transparent materials with rough surfaces in real-time, under all-frequency distant illumination. Rough surfaces cause wide scattering as light enters and exits objects, which significantly complicates the rendering of such materials. We present two contributions to approximate the successive scattering events at interfaces, due to rough refraction: First, an approximation of the Bidirectional Transmittance Distribution Function (BTDF), using spherical Gaussians, suitable for real-time estimation of environment lighting using pre-convolution; second, a combination of cone tracing and macro-geometry filtering to efficiently integrate the scattered rays at the exiting interface of the object. We demonstrate the quality of our approximation by comparison against stochastic ray-tracing. Furthermore we propose two extensions to our method for supporting spatially varying roughness on object surfaces and local lighting for thin objects.

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Graphics [cs.GR]

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Nicolas Holzschuch : Connect in order to contact the contributor

https://inria.hal.science/hal-00652076

Submitted on : Wednesday, December 14, 2011-6:12:47 PM

Last modification on : Thursday, April 4, 2024-9:28:55 PM

Long-term archiving on: Thursday, March 15, 2012-2:45:09 AM

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hal-00652076 , version 1 (14-12-2011)

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HAL Id : hal-00652076 , version 1
DOI : 10.1109/TVCG.2011.282

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Charles de Rousiers, Adrien Bousseau, Kartic Subr, Nicolas Holzschuch, Ravi Ramamoorthi. Real-Time Rendering of Rough Refraction. IEEE Transactions on Visualization and Computer Graphics, 2012, 18 (10), pp.1591-1602. ⟨10.1109/TVCG.2011.282⟩. ⟨hal-00652076⟩

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Real-Time Rendering of Rough Refraction

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