inria-00510252, version 1
Visibility Sampling on GPU and Applications
Elmar Eisemann
1, 2, 3Xavier Décoret 1, 2
Computer Graphics Forum 26, 3 (2007)
Abstract: In this paper, we show how recent GPUs can be used to very efficiently and conveniently sample the visibility between two surfaces, given a set of occluding triangles. We use bitwise arithmetics to evaluate, encode, and combine the samples blocked by each triangle. In particular, the number of operations is almost independent of the number of samples. Our method requires no CPU/GPU transfers, is fully implemented as geometric, vertex and fragment shaders, and thus does not impose to modify the way the geometry is sent to the graphics card. We finally present applications to soft shadows, and visibility analysis for level design. The ultimate version of this paper has been published at Eurographics 2007.
- 1: Laboratoire Jean Kuntzmann (LJK)
- CNRS : UMR5224 – Université Joseph Fourier - Grenoble I – Université Pierre Mendès-France - Grenoble II – Institut Polytechnique de Grenoble - Grenoble Institute of Technology
- 2: ARTIS (INRIA Grenoble Rhône-Alpes / LJK Laboratoire Jean Kuntzmann)
- CNRS : FR71 – INRIA – Laboratoire Jean Kuntzmann – CNRS : UMR5224 – Université Joseph Fourier - Grenoble I – Institut National Polytechnique de Grenoble (INPG)
- 3: Institut Télécom - Télécom ParisTech
- Télécom ParisTech
- Domain : Computer Science/Computer Graphics and Virtual Reality
- inria-00510252, version 1
- http://hal.inria.fr/inria-00510252
- oai:hal.inria.fr:inria-00510252
- From: Team Evasion
- Submitted for:
- Submitted on: Monday, 30 August 2010 09:18:26
- Updated on: Wednesday, 20 October 2010 16:53:52
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