Method and apparatus for texture level of detail dithering

Details Method and apparatus for texture level of detail dithering Method and apparatus for texture level of detail dithering

G - Physics

06

T

G06T 15/00 (2006.01) G06T 15/20 (2006.01)

Patent

CA 2267487

A computationally efficient method for minimizing the visible effects of texture LOD transitions across a polygon. The minimization is accomplished by adding a dithering offset value to the LOD value computed for each pixel covered by a graphics primitive to produce a dithered pixel LOD value. The dithering offsets mat be generated from a table look-up based on the location of the pixel within a span of pixels. The dithered pixel LOD value is used to as an index in the selection of a single LOD texture map from which a textured pixel value is retrieved. The range of dithering offset values can be adjusted by modulating the values in the table look--up.

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