On Sun, 10 Aug 2003, Carsten Haitzler wrote:
> On Sat, 9 Aug 2003 22:07:21 -0700 (PDT) Mark Vojkovich <[EMAIL PROTECTED]>
> babbled:
>
> > On Sun, 10 Aug 2003, Carsten Haitzler wrote:
> >
> > > Would I be correct in the assumption that the only accelerated path for
> > > xrender is the identity transform (1:1 scale)? all other transforms are done
> > > in software? (my initial tests here with xfree86 4.3.0 & nvidia's latest
> > > drivers(as of about a month ago) seem to indicate as much...) (and yes... my
> > > drivers are using acceleration... GL definitely is). ?
> > >
> >
> > The NVIDIA drivers fall back to software if the source or mask
> > have any transform.
>
> really? very interesting as i'm getting my own mmx asm bleding routines blending
> @ 32bpp being 35 times faster than xrender (blending at 1:! scaling, no
> transform, nearest filter for scaling).
RENDER is slow, so that's not surprising.
>
> display is 24bpp (src picture is 32bpp, with alpha, component alpha set, repeat
> set to true, dither true). i am not sure.. but a 35 TIMES speed difference with
> software being the faster... sounds wrong to me.
>
Software being faster than what? It's all in software. I don't
check to see if the transform is identity. If there's a transform,
I punt.
Mark.
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