From kwin  Tue Nov 21 19:55:27 2006
From: Philip Falkner <philip.falkner () gmail ! com>
Date: Tue, 21 Nov 2006 19:55:27 +0000
To: kwin
Subject: Re: kwin_composite on ati (xorg 7.1)
Message-Id: <200611211455.27705.philip.falkner () gmail ! com>
X-MARC-Message: https://marc.info/?l=kwin&m=116413949120428

On Tuesday 21 November 2006 10:21, Lubos Lunak wrote:
> On Tuesday 21 November 2006 09:05, Michael Thaler wrote:
> > > Due to a typo in the code it does not select TFP mode with Mesa libGL,
> > > it uses the SHM mode for you. I've fixed that already, you can try
> > > updating, then it may either work faster or it may not work at all (in
> > > which case you'll have to force SHM explicitly in kwinrc as I said in
> > > the svn commit
> >
> > log).
> >
> > OK, I just checked it out and compiled it. It seems to work, but I get
> > artifacts and once I move a window, the screen gets black and X (or maybe
> > even Linux?) crashes.
> >
> > This is with the open source r300 drivers and AIGLX enabled.
>
>  The radeon drivers reportedly don't support r300 that well yet. You'll
> have to force the SHM mode I guess.

I'm using r200 (Radeon 9000 AGP), and the only corruption I see is when moving 
windows too far offscreen (see Re: partial repaints).  The only crashes I get 
are when an indirect GL program gets run twice in a row; running a different 
indirect program (say, glxgears) between kwin runs avoids the crashes.

> > > > And I also get this error message:
> > > >
> > > > *********************************WARN_ONCE***************************
> > > >** **** File radeon_mm.c function radeon_mm_alloc line 216
> > > > Ran out of GART memory!
> > > > Please consider adjusting GARTSize option.
> > > > *********************************************************************
> > > >** **** Try R300_SPAN_DISABLE_LOCKING env var if this hangs.
> > >
> > > I know there are still some minor painting problems and the crash on
> > > exit. Somewhen somebody fixes it :).
> >
> > I am more concerned the "Ran out of GART memory" warning. I never saw
> > this before. It certainly does not happen with compiz or beryl or other
> > OpenGL apps.

Doesn't happen here at all.  Does changing GARTSize to, say, 64 have any 
effect?  That is, is kwin simply being a little more greedy than compiz/beryl, 
or massively more greedy?

-- 
Philip Falkner
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