Papers by William T. Reeves

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Rendering Antialiased Shadows with Depth Maps

William T. Reeves, David H. 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

Paper (PDF)

Available in the Proceedings of SIGGRAPH 1987.