[Pixman] [PATCH 0/4] More VMX enhancements
ppaalanen at gmail.com
Mon Sep 7 04:04:18 PDT 2015
On Sun, 6 Sep 2015 18:27:07 +0300
Oded Gabbay <oded.gabbay at gmail.com> wrote:
> This patch-set contains optimizations for two existing VMX fast-paths and a new
> VMX fast-path function.
> The optimization ideas came from Siarhei's recent implementation of over_n_8888
> VMX fast path (see http://lists.freedesktop.org/archives/pixman/2015-September/003951.html).
> The new function I added is actually one that I already implemented a couple
> of months ago, but it produced conflicting results regarding the performance.
> However, I now optimized it and it now shows considerable performance
> improvement over the non-vmx path.
> The last patch removes many helper functions that caused the less than stellar
> performance the current fast-paths provide. I removed them as I don't want
> anyone to try and use them, because there are much better alternatives, as
> I've demonstrated with this patch-set.
> Oded Gabbay (4):
> vmx: optimize scaled_nearest_scanline_vmx_8888_8888_OVER
> vmx: optimize vmx_composite_over_n_8888_8888_ca
> vmx: implement fast path vmx_composite_over_n_8_8888
> vmx: Remove unused expensive functions
> pixman/pixman-vmx.c | 439 ++++++++++++++++++----------------------------------
> 1 file changed, 150 insertions(+), 289 deletions(-)
nice diffstat. :-)
This series is:
Acked-by: Pekka Paalanen <pekka.paalanen at collabora.co.uk>
I did notice a few minor issues. Patch 1 has a dereference before
NULL-check, and you sometimes forget the space before an opening
I suppose there is no danger of regressing operations you didn't
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