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List:       freedesktop-xorg
Subject:    Re: Xegl lives!
From:       Michel =?ISO-8859-1?Q?D=E4nzer?= <michel () daenzer ! net>
Date:       2005-05-25 18:57:47
Message-ID: 1117047467.5645.422.camel () localhost
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On Wed, 2005-05-25 at 11:12 -0400, Jim Gettys wrote:
> 
> >From all I've seen, there are two major issues left in GL based
> solutions:
> 
> 	a) memory management.  With composite, we'll pay a heavy price for not
> having pixels in the right place in the right time, and be putting major
> pressure on off screen memory.  We have no experience here, and I expect
> we're going to need substantial experimentation to "get it right".
> 	b) interactivity: a GL program can cause the GPU to stay busy for
> extended periods.  How do we address this issue?
> 
> We must have solutions for both a) and b) to successfully make a
> transition to GL based servers.

I basically agree with the rest of your post, but b) here isn't new
compared to a non-GL server, so I don't think it's a requirement for the
transition.

(On second thought, a) only seems crucial for compositing, in which case
it applies to non-GL servers as well, and I suspect some GL
implementations might actually already be better for that than the
non-GL alternatives we have, but we'll see)


-- 
Earthling Michel Dänzer      |     Debian (powerpc), X and DRI developer
Libre software enthusiast    |   http://svcs.affero.net/rm.php?r=daenzer


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