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Octree Light Propagation Volumes

John David Olovsson
EA DICE, Sweden

Michael Doggett
Lund University, Sweden

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Ingår i: Proceedings of SIGRAD 2013; Visual Computing; June 13-14; 2013; Norrköping; Sweden

Linköping Electronic Conference Proceedings 94:4, s. 27-33

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Publicerad: 2013-11-04

ISBN: 978-91-7519-455-4

ISSN: 1650-3686 (tryckt), 1650-3740 (online)

Abstract

This paper presents a new method for representing Light Propagation Volumes using an octree data structure; and for allowing light from regular point light sources to be injected into them. The resulting technique uses full octrees with the help of a separate data structure for representing the octree structure. The octree structure enables light propagation to be performed at a lower resolution than the base resolution; resulting in fast propagation and overall faster rendering times. The implementation of the technique is capable of rendering the Sponza scene at 9 frames per second; which is 8% faster than the original LPV technique.

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