Computer graphics processing and selective visual display system – Computer graphics display memory system – Memory partitioning
Reexamination Certificate
2005-12-14
2008-09-02
Tung, Kee M. (Department: 2628)
Computer graphics processing and selective visual display system
Computer graphics display memory system
Memory partitioning
C345S422000, C345S530000
Reexamination Certificate
active
07420568
ABSTRACT:
A tiled graphics memory permits graphics data to be stored in different tile formats. One application is selecting a tile format optimized for the data generated for particular graphical surfaces in different rendering modes. Consequently, the tile format can be selected to optimize memory access efficiency and/or packing efficiency. In one embodiment a first tile format stores pixel data in a format storing two different types of pixel data whereas a second tile format stores one type of pixel data. In one implementation, a z-only tile format is provided to store only z data but no stencil data. At least one other tile format is provided to store both z data and stencil data. In one implementation, z data and stencil data are stored in different portions of a tile to facilitate separate memory accesses of z and stencil data.
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Bittel Donald A.
McAllister David Kirk
Molnar Steven E.
Cooley Godward Kronish LLP
Hsu Joni
Nvidia Corporation
Tung Kee M.
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