Is XAA still supported in recent and future xserver?

Matt Dew matt at osource.org
Mon Sep 13 12:47:23 PDT 2010


On Mon, Sep 13, 2010 at 1:17 PM, Mark Kettenis <mark.kettenis at xs4all.nl> 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.
>

Does anyone have a list of what hardware XAA outperforms EXA?  and possibly why?

Matt


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