Rendering Forest Scenes in Real-Time

Philippe Decaudin 1 Fabrice Neyret 1
1 EVASION - Virtual environments for animation and image synthesis of natural objects
GRAVIR - IMAG - Graphisme, Vision et Robotique, Inria Grenoble - Rhône-Alpes, CNRS - Centre National de la Recherche Scientifique : FR71
Abstract : Forests are crucial for scene realism in applications such as flight simulators. This paper proposes a new representation allowing for the real-time rendering of realistic forests covering an arbitrary terrain. It lets us produce dense forests corresponding to continuous non-repetitive fields made of thousands of trees with full parallax. Our representation draws on volumetric textures and aperiodic tiling: the forest consists of a set of edge-compatible prisms containing forest samples which are aperiodically mapped onto the ground. The representation allows for quality rendering, thanks to appropriate 3D non-linear filtering. It relies on LODs and on a GPU-friendly structure to achieve real-time performance. Dynamic lighting and shadowing are beyond the scope of this paper. On the other hand, we require no advanced graphics feature except 3D textures and decent fill and vertex transform rates. However we can take advantage of vertex shaders so that the slicing of the volumetric texture is entirely done on the GPU.
Type de document :
Communication dans un congrès
Alexander Keller and Henrik Wann Jensen. EGSR04: 15th Eurographics Symposium on Rendering, Jun 2004, Norrköping, Sweden. Eurographics Association, pp.93--102, 2004, <http://www.eg.org/EG/DL/WS/EGWR/EGSR04/PDF/093-102.pdf>
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Contributeur : Fabrice Neyret <>
Soumis le : jeudi 18 novembre 2010 - 15:26:53
Dernière modification le : jeudi 29 mars 2012 - 15:44:02
Document(s) archivé(s) le : samedi 19 février 2011 - 03:05:03

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Philippe Decaudin, Fabrice Neyret. Rendering Forest Scenes in Real-Time. Alexander Keller and Henrik Wann Jensen. EGSR04: 15th Eurographics Symposium on Rendering, Jun 2004, Norrköping, Sweden. Eurographics Association, pp.93--102, 2004, <http://www.eg.org/EG/DL/WS/EGWR/EGSR04/PDF/093-102.pdf>. <inria-00537458>

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