EXA for radeon experimental patch

Michel Dänzer michel at daenzer.net
Wed Aug 31 20:59:19 PDT 2005

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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