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Method and apparatus for early culling of occluded objects

  • US 6,924,801 B1
  • Filed: 02/09/1999
  • Issued: 08/02/2005
  • Est. Priority Date: 02/09/1999
  • Status: Expired due to Term
First Claim
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1. A system, used as a host for a graphics pipeline, comprising:

  • a host processor executing a graphics application program, wherein the graphics application program is capable to implement;

    a generation stage for creation, acquisition, and modification of information to be displayed, and organizing the information into application data structures; and

    a traversal stage for traversal of the application data structures, and passing on appropriate graphics data; and

    a graphics processor, communicatively couples to the host processor, capable to implement;

    a transformation stage for transformation of graphics data from object space coordinates into eye-space coordinates, performing requested lighting operation, clipping the transformed data in clip-space, and projecting resulting coordinates into window-space;

    a rasterization stage for rendering window-space primitives into a frame buffer, and performing shading calculations, texture lookups and calculations, and per-pixel operations;

    a feedback loop permitting the rasterization stage to return information to the traversal stage; and

    a display stage for scanning resulting pixels in frame buffer for display to a display device.

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