[Pixman] [PATCH] Add a version of bilinear_interpolation for precision <=4

[Siarhei Siamashka]

On Thu, 24 Jan 2013 15:35:24 -0500
Jeff Muizelaar <jmuizelaar at mozilla.com> wrote:

> Having 4 or fewer bits means we can do two components at
> a time in a single 32 bit register.
> 
> Here are the results for firefox-fishtank on a Pandaboard with
> 4.6.3 and PIXMAN_DISABLE="arm-neon"
> 
> Before:
> [ # ]  backend                         test   min(s) median(s) stddev. count
> [  0]    image           t-firefox-fishtank    7.841    7.910   0.70%    6/6
> 
> After:
> [ # ]  backend                         test   min(s) median(s) stddev. count
> [  0]    image           t-firefox-fishtank    6.951    6.995   1.11%    6/6

That's pretty cool, thanks. I just wonder if you might be also possibly
interested in a 4-bit bilinear scaling for SSE2 backend? It could
provide quite a significant performance improvement.

-- 
Best regards,
Siarhei Siamashka