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High-Quality Adaptive Soft Shadow Mapping

Abstract : The recent soft shadow mapping technique allows the rendering in real-time of convincing soft shadows on complex and dynamic scenes using a single shadow map. While attractive, this method suffers from shadow overestimation and becomes both expensive and approximate when dealing with large penumbrae. This paper proposes new solutions removing these limitations and hence providing an efficient and practical technique for soft shadow generation. First, we propose a new visibility computation procedure based on the detection of occluder contours which is more accurate and faster while reducing aliasing. Secondly, we present a shadow map multi-resolution strategy keeping the computation complexity almost independent on the light size while maintaining high-quality rendering. Finally, we propose a view dependent adaptive strategy, that automatically reduces the screen resolution in the region of large penumbrae, thus allowing us to keep very high frame rates in any situation.
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Contributor : Gaël Guennebaud Connect in order to contact the contributor
Submitted on : Wednesday, January 21, 2009 - 4:39:41 PM
Last modification on : Monday, July 4, 2022 - 10:24:41 AM


  • HAL Id : inria-00355007, version 1


Gael Guennebaud, Loic Barthe, Mathias Paulin. High-Quality Adaptive Soft Shadow Mapping. Computer Graphics Forum, 2007, Proceedings of Eurographics 2007, 26 (3), pp.525-534. ⟨inria-00355007⟩



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