Re: View with OpenGL problem

From: Fons Rademakers (Fons.Rademakers@cern.ch)
Date: Fri Dec 04 1998 - 16:30:07 MET 

Hi Bruce,

   the macro GL.C looks like this (on Linux, Solaris should be
pretty similar):

{
   gSystem.Load("/usr/X11/lib/libXmu.so");
   gSystem.Load("$ROOTSYS/opengl/lib/libMesaGL.so");
   gSystem.Load("$ROOTSYS/opengl/lib/libMesaGLU.so");
   gSystem.Load("$ROOTSYS/lib/libRGL.so");
}


The idea is that you put a link in $ROOTSYS to your OpenGL
directory: cd $ROOTSYS; ln -s /usr/local/src/Mesa-2.2 opengl

If you use another version of OpenGL modify accordingly.

Also you probably still have to build $ROOTSYS/lib/libRGL.so (the
ROOT interface to OpenGL). With the current Makefile this requires
you do:

export OPENGL=/usr/local/src/Mesa-2.2
cd $ROOTSYS/src; make

The new Makefile (coming soon) will just trigger on the existence
of $ROOTSYS/opengl so you won't need to set the $OPENGL anymore.


Cheers, Fons.


O'NEEL Bruce wrote:
> 
> Hi,
>   When I run with my newly rebuilt root on Solaris I get the following
> problem when I choose "View with OpenGL" off of the menu.  A brief
> search for Mesa or OpenGL on the root site mentions loading GL.C, but,
> no GL.C seems to come with either 2.00/13 or 2.20/01.  Obviously I'm
> doing something silly...
> 
> Thanks!
> 
> cheers
> 
> bruce
> 
> root [0] .x demos.C
> root [1] TFile**                hsimple.root
>  TFile*         hsimple.root
>   KEY: TH1F     hpx;1   This is the px distribution
>   KEY: TH2F     hpxpy;1 py vs px
>   KEY: TProfile hprof;1 Profile of pz versus px
>   KEY: TNtuple  ntuple;1        Demo ntuple
> Error in <TROOT::Macro>: macro GL.C not found in path .:/isdc/software/root/macros
> Error in <TPad::x3d>: OpenGL shared libraries not loaded

-- 
Org:    CERN, European Laboratory for Particle Physics.
Mail:   1211 Geneve 23, Switzerland          Phone: +41 22 7679248
E-Mail: Fons.Rademakers@cern.ch              Fax:   +41 22 7677910

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