Computer graphics processing and selective visual display system – Computer graphics processing
Reexamination Certificate
2005-03-29
2005-03-29
Bella, Matthew C. (Department: 2676)
Computer graphics processing and selective visual display system
Computer graphics processing
Reexamination Certificate
active
06873323
ABSTRACT:
A method and apparatus for supporting anti-aliasing oversampling in a video graphics system that utilizes a custom memory for storage of the frame buffer is presented. The custom memory includes a memory array that stores the frame buffer as well as a data path that performs at least a portion of the blending operations associated with pixel fragments generated by a graphics processor. The fragments produced by a graphics processor are oversampled fragments such that each fragment may include a plurality of samples. If the sample set for a particular pixel location can be compressed, the compressed sample set is stored within the frame buffer of the custom memory circuit. However, if such compression is not possible, pointer information is stored within the frame buffer on the custom memory, and a sample memory controller included on the graphics processor maintains a complete sample set for the pixel location within a sample memory. When the sample memory controller maintains a complete sample set for a pixel location, the frame buffer stores a pointer corresponding to the location of the sample set.
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Schilling, A., “A New Simple and Efficient Antialiasing with Subpixel Masks”, SIGGRAPH: Computer Graphics, ACM Press, NY, NY, 1991, pp. 133-141.*
Schilling, Andreas, “A New Simple and Efficient Antialiasing with Subpixel Masks,” SIGGRAPH: Computer Graphics, ACM Press, Inc. NY,NY, 1991, pp 133-141.*
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FBRAM: A New Form of Memory Optimized fo 3D Graphics.
ATI International SRL
Bella Matthew C.
Singh Dalip K.
Vedder Price Kaufman & Kammholz P.C.
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