On Mon, Jun 25, 2012 at 1:00 AM, Siarhei Siamashka <[email protected]> wrote: > On Mon, Jun 18, 2012 at 9:09 PM, Søren Sandmann <[email protected]> wrote: >> Siarhei Siamashka <[email protected]> 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 > used now.
Looking forward to seeing the patch. I'll be really interested to compare performance on Loongson and iwMMXt when I can switch the scaling functions over to multiply-add. _______________________________________________ Pixman mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/pixman
