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Øyvind "pippin" Kolås authored
Implement an adaptive caching policy; that meets the needs of affine transformations. Running averages are kept of x/y deltas as well as the magnitudes of the deltas of coordinates leading to cache misses. The initial rectangle used is a small one; subsequent rectangles have extents up to 64 pixels wide/tall; when tracked deltas are more diagonal than axis aligned smaller more square regions are tracked.
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