[Bf-committers] ati slow swap buffer perfomance
john at namke.com
Thu Sep 9 15:09:20 CEST 2004
no, this isn't the problem I encountered. I believe that fix was the 'gradual
slowdown' problem with ATI cards - the problem I (and many others) have is the
slow display of menus and GUI elements... it can take around 10 seconds to
display the 'file' menu for example.
I know that I could replace my graphics card, but I like my fanless dual head
ATI - it works fine for everything else...
Quoting Ton Roosendaal <ton at blender.org>:
> I think you missed the release log for 2.34. The problem was located
> and found, which was switching all glFinish calls with glFlush. Please
> verify if it works for you!
> On Thursday, Sep 9, 2004, at 11:13 Europe/Amsterdam, john tuffen wrote:
> > Hi Tom,
> > ... well - as you pointed out - it was a while ago (against something
> > like
> > v2.32?). I can take a look when I get home to where the code is
> > (was?). My
> > quick hack basically involved removing all of the calls which switched
> > to the
> > front buffer (thus drawing things to the back buffer), and adding
> > 'swapbuffers'
> > calls at appropriate places to ensure the content was actually
> > displayed. As I
> > say, this was a very quick hack, and made menus (in general all of the
> > UI
> > interaction in fact) much more responsive. The down side was that all
> > of the
> > calls to 'swapbuffers' caused much flickering in vertex-paint mode (on
> > my
> > machine). Bringing the build to a different machine to test, I found
> > that all
> > of the display flickered all of the time... not good at all.
> > So, I was at the stage where what I actually wanted was a
> > 'swapbuffers' that
> > only worked on small screen areas - or a different approach entirely.
> > I'll see what code I can find at home, and email it later...
> > cheers,
> > john..
> > --
> > http://www.minimism.com/
> > Quoting Tom Musgrove <tommusgrove__ at hotmail.com>:
> >> In April and in June there was discussion regarding fixing the slow
> >> drawing
> >> of menus for ATI cards..
> >> Specifically John Tuffen had mentioned his personal progress in
> >> April, and
> >> Ton had mentioned a discussion with Daniel on potential solutions.
> >> http://www.blender.org/pipermail/bf-committers/2004-April/005784.html
> >> http://www.blender.org/pipermail/bf-committers/2004-April/005791.html
> >> http://www.blender.org/pipermail/bf-committers/2004-June/006450.html
> >> Is there still a plan to fix this issue?
> >> If not, if John is still around could I see your patch?
> >> Thanks,
> >> Tom M.
> >> LetterRip
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> Ton Roosendaal Blender Foundation ton at blender.org
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