On Tue, Aug 4, 2009 at 9:54 AM, Dave Airlie <[email protected]> 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. > > Dave. > > Which branch? And does it work? I'm wondering if it might be worth trying if only to see if it solves my KMS slowness bug ( https://bugs.freedesktop.org/show_bug.cgi?id=23085) -- that's the selfish reason for my question ;). And I'm sorry for my lack of knowledge on the subject, but why would UTS be unnecessary? Is all 2d rendering done in such a way that it can be done in video memory? Or perhaps I am misunderstanding what UTS and DFS actually do.
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