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List:       freedesktop-xorg
Subject:    Re: EXA for radeon experimental patch
From:       Michel =?ISO-8859-1?Q?D=E4nzer?= <michel () daenzer ! net>
Date:       2005-09-01 3:59:19
Message-ID: 1125547159.23262.86.camel () localhost
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On Thu, 2005-09-01 at 08:47 +1000, Benjamin Herrenschmidt wrote:
> > I'n not taking about migrating the whole framebuffer. Usually the composite 
> > operation is restricted to a window that quite a bit smaller, and all you 
> > need is a temporary pixmap in main memory that contains a copy of the window. 
> > DownloadFromScreen makes exactly this cheap.
> 
> It won't do it in many cases afaik. BTW. Somebody knows if radeon
> HOSTDATABLIT can be used to blit to host memory or only from host
> memory ?

As the name 'hostdata' implies, that mechanism is only suitable for
host->GPU transfers.


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

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