Systems and methods for caching depth information of three-dimensional images
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United States of America Patent
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Apr 24, 2001
Grant Date -
N/A
app pub date -
Jul 16, 1997
filing date -
Jul 26, 1996
priority date (Note) -
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Abstract
A Z-cache is provided for use in rasterizing computer generated images. The Z-cache allows for caching depth information such that a depth buffer may be implemented in system memory without degradation in performance of a depth routine for determining the visible information in a display. The Z-cache may store and compare pixel depth information. Thus, methods of using a z-cache in a graphics system as well as a graphics system, a processing system and a rasterizer are provided which utilize a Z-cache.
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