[x264-devel] 8x8 and 16x16 Altivec implementation of variance

Jason Garrett-Glaser darkshikari at gmail.com
Sat Jan 24 02:57:11 CET 2009

On Fri, Jan 23, 2009 at 5:52 PM, Jason Garrett-Glaser
<darkshikari at gmail.com> wrote:
>>> The 8x8 doesn't such a big speed-up because the data is 8-bytes
>>> aligned, not 16-bytes aligned, so it's necessary to permute it before
>>> using it.
> Why not just set the alignment to 16 in frame.c?

Ah, nevermind, I was obviously thinking of stride alignment, not
actual alignment.  Of course, I figure stride alignment would help...

Dark Shikari

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