“Percentage-Closer Soft Shadows”

  • ©Randima Fernando




    Percentage-Closer Soft Shadows



    One of the fundamental problems in computer graphics is generating accurate soft shadows from area light sources. Soft shadows provide valuable cues about the relationships between objects, becoming sharper as objects contact each other and more blurry (softer) the further they are apart.


    Hasenfratz, J., Lapierre, M., Holzschuch, N., and Sillion, F. A Survey of Real-Time Soft Shadow Algorithms. Computer Graphics Forum, Vol. 22, No. 4 (December 2003)
    Reeves, W. T., Salesin, D. H., and Cook, R. I. Rendering Antialiased Shadows with Depth Maps. In Computer Graphics (SIGGRAPH 1987 Proceedings), pages 283–291, July 1987.
    Williams, L. Casting Curved Shadows on Curved Surfaces. In Computer Graphics (SIGGRAPH 1978 Proceedings), pages 270–274, August 1978.

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