On Tue, Aug 4, 2009 at 10:02 AM, Joel Feiner <[email protected]> wrote:
> > > 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. > > I just saw the updated post on the bug report, so I now know which branch. I will check it out. Sorry for the email spam.
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