[Mesa3d-users] blank openGL canvas in window

[Brian S. <B....@bi...>]

Hi,

I'm involved in beta testing a scientific application being written in
python/tcl/tk/C/OpenGL
(http://www.ccpn.ac.uk/ccpn_suite/Analysis/analysis.html). On my system
(Athlon/RH8/NVidia Geforce4 MX 440), the application runs, but the OpenGL
part of the windows (where the data is shown) is blank when I use the
NVidia driver (various versions now up to 5336) and ensure that the NVidia
libraries are being loaded (checked with lsof). If I use the Mesa
libraries by setting my LD_LIBRARY_PATH appropriately (still using the
NVidia driver) the contents of the windows are visible.

At another site they had a similar problem on RH 7.3 systems using Matrox
Millenium G450 cards and the mga driver from XFree86 4.2.0 when they
compiled against Mesa 6 and forced the Mesa 6 libs to be loaded (Mesa 3.4 
system libraries seem to be prefered!).

The developers have given me example programs to test where the problems 
come in - basically a plain C/OpenGl program works fine, but when they add 
the python/tcl/tk wrapper the problem is the same.

Has anyone seen anything similar and have any clues/pointers as to how to 
get out of this?

Many thanks.

-- 
Dr. Brian O. Smith ---------------------- B.Smith at bio.gla.ac.uk
          Division of Biochemistry & Molecular Biology, 
              Institute Biomedical & Life Sciences, 
Joseph Black Building, University of Glasgow, Glasgow G12 8QQ, UK.
Tel: 0141 330 5167/6459                         Fax: 0141 330 8640