Lighting and shadowing methods and arrangements for use in computer graphic simulations

  • US 6,362,822 B1
  • Filed: 03/12/1999
  • Issued: 03/26/2002
  • Est. Priority Date: 03/12/1999
  • Status: Expired due to Term
First Claim
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1. A shadow rendering method for use in a computer system, the method comprising the steps of:

  • providing observer data of a simulated multi-dimensional scene;

    providing lighting data associated with a plurality of simulated light sources arranged to illuminate said scene, said lighting data including light image data;

    for each of said plurality of light sources, comparing at least a portion of said observer data with at least a portion of said lighting data to determine if a modeled point within said scene is illuminated by said light source and storing at least a portion of said light image data associated with said point and said light source in a light accumulation buffer; and

    then combining at least a portion of said light accumulation buffer with said observer data; and

    displaying resulting image data to a computer screen.

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