Tomas Akenine-Möller, Ulf Assarsson. Approximate Soft Shadows on Arbitrary Surfaces using Penumbra Wedges. In Simon Gibson, Paul E. Debevec, editors, Proceedings of the 13th Eurographics Workshop on Rendering Techniques, Pisa, Italy, June 26-28, 2002. Volume 28 of ACM International Conference Proceeding Series, pages 297-305, Eurographics Association, 2002.
Abstract is missing.