Soft Textured Shadow Volume

Forest Vincent 1 Loïc Barthe 1 Gael Guennebaud 2, 3 Mathias Paulin 1
3 IPARLA - Visualization and manipulation of complex data on wireless mobile devices
Université Sciences et Technologies - Bordeaux 1, Inria Bordeaux - Sud-Ouest, École Nationale Supérieure d'Électronique, Informatique et Radiocommunications de Bordeaux (ENSEIRB), CNRS - Centre National de la Recherche Scientifique : UMR5800
Abstract : Efficiently computing robust soft shadows is a challenging and time consuming task. On the one hand, the quality of image-based shadows is inherently limited by the discrete property of their framework. On the other hand, object-based algorithms do not exhibit such discretization issues but they can only efficiently deal with triangles having a constant transmittance factor. This paper addresses this limitation. We propose a general algorithm for the computation of robust and accurate soft shadows for triangles with a spatially varying transmittance. We then show how this technique can be efficiently included into object-based soft shadow algorithms. This results in unified object-based frameworks for computing robust direct shadows for both standard and perforated triangles in fully animated scenes.
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Article dans une revue
Computer Graphics Forum, Wiley, 2009, Proceedings of Eurographics Symposium on Rendering 2009, 28 (4), pp.1111--1120
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Forest Vincent, Loïc Barthe, Gael Guennebaud, Mathias Paulin. Soft Textured Shadow Volume. Computer Graphics Forum, Wiley, 2009, Proceedings of Eurographics Symposium on Rendering 2009, 28 (4), pp.1111--1120. 〈inria-00390534〉

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