[Pixman] [PATCH] sse2: Using MMX and SSE 4.1
siarhei.siamashka at gmail.com
Sun Jun 24 22:00:44 PDT 2012
On Mon, Jun 18, 2012 at 9:09 PM, Søren Sandmann <sandmann at cs.au.dk> wrote:
> Siarhei Siamashka <siarhei.siamashka at gmail.com> writes:
>> This is also a very useful test, but it effectively requires to have
>> an alternative double precision implementation for all the pixman
>> functionality to be verified. For bilinear scaling it means that at
>> least various types of repeats need to be handled, etc. And this
>> sounds like a lot of work.
> Yeah, I agree that it's a lot of work and that dropping to 7 bits is
> easier in the short term.
OK, I got 7-bit variant of SSE2 bilinear scaling working. It shows
quite a good speed boost thanks to PMADDWD instruction, which can be
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