[R] rgl/compiz problem

[Simon Blomberg]

My laptop has an nVidia card. Maybe that's why it works?

Simon.

On Wed, 2008-08-13 at 13:17 +0000, Ben Bolker wrote:
> Barry Rowlingson <b.rowlingson <at> lancaster.ac.uk> writes:
> 
> > 
> > I have just encountered the problem with rgl where plot3d figures
> > don't interact with the mouse. My plots zoom in and out with the mouse
> > wheel but the mouse buttons do nothing. I can't rotate the plot.
> > 
> > This has been mentioned and discussed here and in other lists before,
> > and the solution is to turn off Ubuntu's fancy graphics.  Back in
> > March, Ben Bolker said:
> > 
> > """
> > unfortunately rgl and compiz/etc. both try to use
> > the same OpenGL interface, so you can't use both at
> > the same time.
> > """
> > 
> > This has echoes of when TCP/IP was in its infancy back in the days of
> > DOS, and only one program could access the network interface at a time
> > (until TCP/IP software got its act together). Is OpenGL really in the
> > same position now? Or is Compiz being "greedy" in some sense? Surely
> > two OpenGL applications can run at the same time? Or is it because rgl
> > is running 'within' another OpenGL window already, so there's some
> > nesting problem going on?
> > 
> >  Google Earth works fine, and I think that uses OpenGL. Anyone had any
> > ideas since March?
> > 
> > I'm on Ubuntu 8.04 and R 2.7.1
> > 
> > Barry
> 
>   Unfortunately, an apparently knowledgeable compiz person
> said:
> 
> This is a limitation of DRI, DRI2 should fix this, and should hopefully be in
> most drivers by Xorg 7.5(maybe 7.6), nvidia has there on implementation, that's
> why it works on it
> 
> http://forum.compiz-fusion.org/showthread.php?t=8462
> 
>   And poking around,
> 
> http://www.phoronix.com/scan.php?page=news_item&px=NjYzNw
> 
> "sometime in 2009" is the closest I could get to finding
> an expected date when this would be available ...
> 
>   Ben Bolker
> 
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-- 
Simon Blomberg, BSc (Hons), PhD, MAppStat. 
Lecturer and Consultant Statistician 
Faculty of Biological and Chemical Sciences 
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email: S.Blomberg1_at_uq.edu.au

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