Re: [ROOT] WARNING about ROOT with OpenGL

From: Fons Rademakers (Fons.Rademakers@cern.ch)
Date: Wed Nov 17 2004 - 19:42:52 MET


If you install ATI or NVidia accelerated drivers they come with their
own libGL.so that is installed over the Mesa one in the same /usr/lib
location. The includes are not overwritten so they still say 4.0.4 (on
RH 9). Doing a strings on the NVidia libGL.so I see references to
"NVIDIA", but are there any references we can find in the bad MesaGL lib
to distinguish them?

Cheers, Fons.



On Wed, 2004-11-17 at 19:07, Rene Brun wrote:
> Hi Christian,
> 
> Yes, I should have mentionned that the problem is with MesaGL.
> 
> When installing ROOT from source, configure takes first the versions in /usr.
> FedoraCore2 ships with a bad version of MesaGL in /usr
> 
> May be configure should be changed to start with other possible GL versions?
> 
> Rene Brun
> 
> Christian Holm Christensen wrote:
> > 
> > Hi Rene,
> > 
> > On Wed, 2004-11-17 at 16:33 +0100, Rene Brun wrote:
> > > We had recently several reports about ROOT crashing when starting the OpenGL
> > > viewer. We have now identified the problem to be with the GL versions shipped
> > > with some Linux flavours, including recent versions like FedoraCore2 or SLC3.
> > > Please check the file in /usr/include/GL/gl.h
> > > If this file indicates 3.4, 3.5 or even worst 5.2, you should upgrade
> > > your GL version to the current GL release 6.2.
> > > You can import this version from http://mesa3d.org
> > 
> > I guess this is only true if you're using `real' Mesa.
> > 
> > If you're using the `XFree86' GL libraries, then version 4.0.4 works
> > fine for me.
> > 
> >         OS:             Debian GNU/Linux unstable (sid)
> >         XFree86:        4.3.0 (dfsg 1)
> >         GL:             xlibmesa-gl-dev 4.3.0, nvidia-glx-dev 1.0.6629
> > 
> > GL kept SIGSEGV on me some time ago, but that was due to an incomplete
> > build (my mistake).
> > 
> > Yours,
> > 
> > --
> >  ___  |  Christian Holm Christensen
> >   |_| |  -------------------------------------------------------------
> >     | |  Address: Sankt Hansgade 23, 1. th.  Phone:  (+45) 35 35 96 91
> >      _|           DK-2200 Copenhagen N       Cell:   (+45) 24 61 85 91
> >     _|            Denmark                    Office: (+45) 353  25 404
> >  ____|   Email:   cholm@nbi.dk               Web:    www.nbi.dk/~cholm
> >  | |
-- 
Org:    CERN, European Laboratory for Particle Physics.
Mail:   1211 Geneve 23, Switzerland
E-Mail: Fons.Rademakers@cern.ch              Phone: +41 22 7679248
WWW:    http://www.rademakers.org/fons/      Fax:   +41 22 7679480



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