Anisotropic texture filtering with a modified number of texture samples
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United States of America Patent
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May 13, 2008
Grant Date -
N/A
app pub date -
Oct 11, 2005
filing date -
Oct 11, 2005
priority date (Note) -
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Abstract
Systems and methods for modifying the number of texture samples used to produce an anisotropically filtered texture mapped pixel may improve texture mapping performance. When the number of texture samples is reduced, fewer texels are read and fewer filtering computations are needed to produce a texture value for an anisotropic footprint. The number of texture samples is reduced based on the mip map level weight. The number of texture samples may also be modified using specific parameters for the coarse and/or fine mip map levels. The spacing between the texture samples along the major axis of anisotropy may be modified to improve image quality or texture cache performance.
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