Multi-layered Indirect Texturing for Tree Rendering

García, Ismael; Patow, Gustavo; Szirmay-Kalos, László; Sbert, Mateu

Multi-layered Indirect Texturing for Tree Rendering

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Date

2007

Authors

García, Ismael
Patow, Gustavo
Szirmay-Kalos, László
Sbert, Mateu

Publisher

The Eurographics Association

Abstract

This paper presents a technique to render in real time complex trees using billboard clouds as an impostor simplification for the original polygonal tree, combined with a new texture-based representation for the foliage. The technique provides several new contributions with respect to previous approaches. The new algorithm allows progressive level of detail both at the geometric and at the shader levels. It also preserves the parallax effects of the original polygonal model keeping leaf positions, orientations, and preserving the overlapping of the leaves as seen from any view point. In addition, the texture-based representation provides high-definition close views without introducing high memory requeriments. We adapted a realistic lighting model with soft shadows and a global illumination precomputation, allowing to render highly complex scenes with thousands of trees in real time.

        @inproceedings{:10.2312/NPH/NPH07/055-062
,
booktitle = {Eurographics Workshop on Natural Phenomena
},
editor = {D. Ebert and S. Merillou
},
title = {{Multi-layered Indirect Texturing for Tree Rendering
}},
author = {García, Ismael and 
Patow, Gustavo and 
Szirmay-Kalos, László and 
Sbert, Mateu
},
year = {2007
},
publisher = {The Eurographics Association
},
ISSN = {1816-0867
},
ISBN = {978-3-905673-49-4
},
DOI = {/10.2312/NPH/NPH07/055-062
}
}