A multiple depth buffer implementation for radiosity

Authors:
Roel Martínez;László Szirmay-Kalos;Mateu Sbert
Affiliations:
Institut d'Informàtica i Aplicacions, Universitat de Girona;Department of Control Engineering and Information Technology, Technical University of Budapest;Institut d'Informàtica i Aplicacions, Universitat de Girona
Venue:
ICCSA'03 Proceedings of the 2003 international conference on Computational science and its applications: PartIII
Year:
2003

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Abstract

This paper presents a depth buffer implementation of the global line multipath algorithm for radiosity. The implementation makes use of bundles of parallel lines implemented with OpenGL's depth buffer. For each projection direction the new algorithm uses several pair of depth buffers and exploits coherence between them in order to improve the efficiency. Each depth buffer stores the patch IDs that are projected onto them and a pair of depth buffers with opposite normals are used in order to exchange the energy between patches.