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Extrapolation of nonresident mipmap data using the resident mipmap data
Extrapolation of nonresident mipmap data using the resident mipmap data
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机译：使用常驻mipmap数据外推非常驻mipmap数据
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摘要
PROBLEM TO BE SOLVED: To improve the appearance of low resolution texture map data that is used, while high resolution mipmaps are being retrieved from a high latency storage resource.;SOLUTION: A multi-threaded graphics processor is configured to use to extrapolate low resolution mipmaps stored in physical memory to produce extrapolated texture values, while high-resolution nonresident mipmaps are retrieved from a high latency storage resource and converted into resident mipmaps. The extrapolated texture values provide an improved image that appears sharper, as compared with using the low-resolution mipmap level texture data, in place of the temporarily unavailable high-resolution mipmap level texture data. An extrapolation threshold LOD is used for deciding when extrapolated magnification or minification texture filtering is to be used. The extrapolation threshold LOD can be used to smoothly transition from the use of extrapolated filtering to the use of interpolated filtering, when a nonresident mipmap is converted to a resident mipmap.;COPYRIGHT: (C)2009,JPO&INPIT
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