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David Barker authored
We would expect that these new functions would be slower than the old masked SAD/SSE functions, as they do additional work (blending two inputs and comparing to a third, rather than just comparing two inputs). This is true for the SAD functions, which are about 50% slower (depending on block size and bit depth). However, the sub-pixel SSE functions are comparable to the old speed for the accelerated special cases (xoffset or yoffset = 0 or 4), and are between 40-90% faster for the generic case. Change-Id: I1a296ed8fc9e3edc313a6add516ff76b17cd3e9f
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