The Lightspeed Automatic Interactive Lighting Preview System
Jonathan Ragan-Kelley, Charlie Kilpatrick, Brian W. Smith, Doug Epps, Paul Green, Christophe Hery, Frédo Durand
In ACM Transactions on Graphics, 26(3), July 2007.
Abstract: We present an automated approach for high-quality preview of feature-film rendering during lighting design. Similar to previous work, we use a deep-framebuffer shaded on the GPU to achieve interactive performance. Our first contribution is to generate the deep-framebuffer and corresponding shaders automatically through data-flow analysis and compilation of the original scene. Cache compression reduces automatically-generated deep-framebuffers to reasonable size for complex production scenes and shaders. We also propose a new structure, the indirect framebuffer, that decouples shading samples from final pixels and allows a deep-framebuffer to handle antialiasing, motion blur and transparency efficiently. Progressive refinement enables fast feedback at coarser resolution. We demonstrate our approach in real-world production.
Keyword(s): GPUs, RenderMan, data-flow analysis, interactive rendering, lighting preview, programmable shading
@article{Ragan-Kelley:2007:TLA,
author = {Jonathan Ragan-Kelley and Charlie Kilpatrick and Brian W. Smith and Doug Epps and Paul Green and Christophe Hery and Frédo Durand},
title = {The Lightspeed Automatic Interactive Lighting Preview System},
journal = {ACM Transactions on Graphics},
volume = {26},
number = {3},
pages = {25:1--25:11},
month = jul,
year = {2007},
}
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