On Gwe, 2005-11-25 at 14:23 -0500, Lee Revell wrote: > On Fri, 2005-11-25 at 20:13 +0100, Arjan van de Ven wrote: > > of course sometimes having less but more coarse locks is actually > > faster. Taking/dropping a lock is not free. far from it. > > True but couldn't it be a problem for devices like unichrome where you > have 3D and MPEG acceleration and they have to play nice? It just seems > like there may have been an implicit assumption that devices only > support one type of hardware acceleration.
Not really. The DRI locking is what the driver makes of it. Generally GPUs are internally very coarse grained and don't like doing different jobs at the same time anyway. The nearest thing I think to look at it as would be futex locks, and DRI could probably use futex locks with some glue for the X authentication side of things. However futex locks are not in FreeBSD and may never be (IBM patent questions for non-GPL), and DRI predates futexes by a large margin. ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
