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Enhancing and Optimizing the Render Cache

Bruce Walter 1 George Drettakis 2, 3 Donald P. Greenberg 1 
2 iMAGIS - Models, Algorithms and Geometry for Computer Generated Image Graphics
GRAVIR - IMAG - Laboratoire d'informatique GRAphique, VIsion et Robotique de Grenoble, Inria Grenoble - Rhône-Alpes
3 REVES - Rendering and virtual environments with sound
CRISAM - Inria Sophia Antipolis - Méditerranée
Abstract : Interactive rendering often requires the use of simplified shading algorithms with reduced illumination fidelity. Higher quality rendering algorithms are usually too slow for interactive use. The render cache is a technique to bridge this performance gap and allow ray-based renderers to be used in interactive contexts by providing automatic sample interpolation, frame-to-frame sample reuse, and prioritized sampling. In this paper we present several extensions to the original render cache including predictive sampling, reorganized computation for better memory coherence, an additional interpolation filter to handle sparser data, and SIMD acceleration. These optimizations allow the render cache to scale to larger resolutions, reduce its visual artifacts, and provide better handling of low sample rates. We also provide a downloadable binary to allow researchers to evaluate and use the render cache.
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Submitted on : Friday, July 22, 2011 - 4:06:02 PM
Last modification on : Friday, November 18, 2022 - 9:26:48 AM
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  • HAL Id : inria-00606729, version 1



Bruce Walter, George Drettakis, Donald P. Greenberg. Enhancing and Optimizing the Render Cache. Proceedings of the Eurographics Workshop on Rendering, Eurographics, Jun 2002, Pise, Italy. pp.37-42. ⟨inria-00606729⟩



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