On Tue, 2009-08-04 at 11:54 +1000, Dave Airlie wrote: > On Tue, 2009-08-04 at 09:49 +0800, Joel Feiner wrote: > > 2009/8/4 Michel Dänzer <[email protected]> > > <snip> > > > > I wonder if maybe the slowdown I'm seeing is because the > > radeon driver > > is temporarily lacking UploadToScreen and DownloadFromScreen > > hooks with > > KMS, though I'm not sure what those would be used for with > > text > > rendering. > > > > Off-topic, but if I may enquire out of intellectual curiosity: why > > doesn't the KMS version of Radeon have UTS and DFS acceleration? > > The code is in the branch, but its really ugly, I was hoping to actual > do it cleaner which might involve a new kernel interface to ask for the > current placement of a buffer object so we can decide whether to just > memcpy or we need to blit for DFS. I'm not sure I saw a good reason for > UTS, doing Host data blits isn't really useful with BOs at least with > the current code.
One potential benefit of UTS is pipelining. But I agree that DFS is probably more important. -- Earthling Michel Dänzer | http://www.vmware.com Libre software enthusiast | Debian, X and DRI developer _______________________________________________ xorg-devel mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-devel
