System and method for packing data in different formats in a tiled graphics memory
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United States of America Patent
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Sep 2, 2008
Grant Date -
N/A
app pub date -
Dec 14, 2005
filing date -
Dec 17, 2003
priority date (Note) -
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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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Cited Art Landscape
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