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Recirculating shade tree blender for a graphics system

  • US 7,176,919 B2
  • Filed: 10/04/2005
  • Issued: 02/13/2007
  • Est. Priority Date: 08/23/2000
  • Status: Expired due to Term
First Claim
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1. In a graphics system for video game play including interactive user input controls, a processing pipeline that renders and displays images at least in part in response to said interactive user input controls and to stored polygon vertex data and texture data, a multitexture processing subsystem for selectively mapping texture data corresponding to one or more different textures and/or texture characteristics to surfaces of said rendered and displayed images, said multitexture processing subsystem comprising:

  • a texture mapper that maps textures, andan interactive color/alpha-component blending unit configured within the pipeline to combine said mapped textures, rasterized color and/or alpha component data to produce a computed color and having a feedback mechanism that enables reintroduction of the computed color into the pipeline, wherein a processing of multiple textures is achieved by an iterative use/reuse of the blending unit,the blending unit being capable of iterating via said feed back mechanism at double the rate that said texture mapper can map said textures.

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