Log of /xvidcore/src/motion/sad.h
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1.18.2.4 -
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Thu Nov 13 23:11:24 2003 UTC (20 years, 6 months ago) by
edgomez
Branch:
dev-api-4
Changes since
1.18.2.3: +11 -0 lines
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previous 1.18.2.3
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branch point 1.18
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next main 1.26
MMXed the calculation of SSE for 8x8 16bit blocks. This helps quite
a lot VHQ=4 mode.
My tests show with trellis:chroma_me:
- ~20% speed improvement for vhq=4.
- at least 5% when using vhq=1.
Of course this speedup vanishes if more CPU intensive features are
used. CruNcher who used gmc/qpel, noticed "only" a ~5% speed
improvement.
NB: i'm of course talking about overall speed improvement. Such a
small patch for such a big improvement :-)
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