Is XAA still supported in recent and future xserver?

Vignatti Tiago (Nokia-MS/Helsinki) tiago.vignatti at nokia.com
Mon Sep 13 12:56:59 PDT 2010


On Mon, Sep 13, 2010 at 09:17:52PM +0200, ext Mark Kettenis wrote:
> > Date: Mon, 13 Sep 2010 22:09:29 +0300
> > From: Tiago Vignatti <tiago.vignatti at nokia.com>
> > 
> > On Mon, Sep 13, 2010 at 05:26:34PM +0200, ext Alex Deucher wrote:
> > > On Mon, Sep 13, 2010 at 11:18 AM, Matt Dew <matt at osource.org> wrote:
> > > > Is that something that should go on a TODO (wish)list?  Move remaining
> > > > DDXs from XXA to EXA? Maybe improve those drivers' performance on EXA
> > > > first?
> > > 
> > > I'm not sure it's worth the effort.  Much of the older hardware isn't
> > > even capable of EXA (lack of offset-based blitters for solid/copy and
> > > the lack of 3D engines for composite).  For hw that is, it's a lot of
> > > work for old hardware that hardly anyone one uses.  I suppose there
> > > are a few chips that are still used where it may make sense.  In many
> > > cases shadowfb is as fast or faster than the blitters on these old
> > > chips anyway. XAA is mostly sw rendering now anyway.
> > 
> > so this means we could deprecate XAA from the server, and if one cares about
> > it we recommend to use old servers?
> 
> No.  XAA does make a noticable difference on some hardware.

I believe you, but would be nice also to see numbers: which and how many
hardware, why perform better, is there way of enhance and so on.

             Tiago


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