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Rendering Antialiased Shadows with Depth Maps Bill Reeves, David Salesin, Robert L. Cook July 1987 We present a solution to the aliasing problem for shadow algorithms that use depth maps. The solution is based on a new filtering technique called percentage closer filtering. In addition to antialiasing, the improved algorithm provides soft shadow boundaries that resemble penumbrae. We describe ... [more] Available in the Proceedings of SIGGRAPH 1987. |