VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Thu Apr 05 2007 - 15:34:03 CDT

Hi,
  Indeed, the output from 'glxinfo' has verified that your current
video driver/library combination is _not_ exporting the OpenGL
programmable shading extensions at all, which is what you're
also seeing in the VMD startup messages.

In order to use VMD's GLSL features, 'glxinfo" must list the extensions:
  GL_ARB_shader_objects
  GL_ARB_vertex_shader
  GL_ARB_fragment_shader
  GL_ARB_shading_language_100

If you're missing any of those, then the GLSL shading mode will
be disabled, since VMD needs all of them in order for its shaders
to function correctly.

Hopefully your system adminstration team can correct this by setting
your machine up with an appropriate driver and OpenGL library.

Cheers,
  John Stone
  vmd_at_ks.uiuc.edu

On Thu, Apr 05, 2007 at 04:07:14PM -0400, Nichols A. Romero wrote:
> John,
>
> Thanks for taking a look at this. I'm attaching as a text file.
>
> I contacted my System Administrator and asked him if anything has changed.
> Unfortunately, I don't have the liberty
> of downgrading libraries, kernels, etc. myself. I can't even look at
> /var/log/messages.
>
>
> On 4/5/07, John Stone <johns_at_ks.uiuc.edu> wrote:
> >
> >Hi,
> > Interesting. It seems that your video driver is not advertising
> >_any_ of the OpenGL shading language extensions. The "Features" line
> >printed by VMD doesn't include any of the programmable shading extensions.
> >In a normal run on a machine that has all of the OpenGL extensions, you
> >would see "GLSL(OVF)" toward the end of the OpenGL features string
> >printed by VMD.
> >
> >Since you mentioned that you previously did have GLSL working on this
> >hardware, the most likely cause of problems is that your system's
> >OpenGL libraries or video driver version has been changed to one that
> >is less capable than you had previously. Can you email me the output
> >of "glxinfo" on this machine? I will be able to determine more about
> >your video driver and OpenGL library based on the output it prints.
> >
> >Thanks,
> > John Stone
> > vmd_at_ks.uiuc.edu
> >
> >On Thu, Apr 05, 2007 at 03:41:22PM -0400, Nichols A. Romero wrote:
> >> Hi,
> >>
> >> I hate to mail the list with this type of a problem, but I have no where
> >to
> >> turn.
> >>
> >> I did
> >> setenv VMDGLSLVERBOSE 1
> >> before I ran VMD. Not sure if that was correct.
> >>
> >> VMD 1.8.5 is given me the following message:
> >> Info) OpenGL renderer: Quadro FX Go1400/PCI/SSE2
> >> Info) Features: STENCIL MDE MTX NPOT PP PS
> >> Info) GLSL rendering mode is NOT available.
> >> Info) Textures: 2-D (4096x4096), 3-D (512x512x512), Multitexture (4)
> >>
> >> Following a previous thread that I found on the mailing list, here is
> >the
> >> output of
> >> locale:
> >> LANG=en_US.UTF-8
> >> LC_CTYPE="en_US.UTF-8"
> >> LC_NUMERIC="en_US.UTF-8"
> >> LC_TIME="en_US.UTF-8"
> >> LC_COLLATE="en_US.UTF-8"
> >> LC_MONETARY="en_US.UTF-8"
> >> LC_MESSAGES="en_US.UTF-8"
> >> LC_PAPER="en_US.UTF-8"
> >> LC_NAME="en_US.UTF-8"
> >> LC_ADDRESS="en_US.UTF-8"
> >> LC_TELEPHONE="en_US.UTF-8"
> >> LC_MEASUREMENT="en_US.UTF-8"
> >> LC_IDENTIFICATION="en_US.UTF-8"
> >> LC_ALL=
> >>
> >> GLSL rendering was available on my machine several weeks ago. I know for
> >> sure because I took a snap shot of a high quality image on my computer
> >and
> >> I still have it.
> >>
> >> There are patches applied to my computer all the time without my
> >knowledge
> >> and I wouldn't be suprised if one of the messed things up.
> >>
> >> Here is my kernel version:
> >> 2.6.9-42.0.10.EL
> >>
> >> Let me know if you can help.
> >> --
> >> Nichols A. Romero, Ph.D.
> >> 1613 Denise Dr. Apt. D
> >> Forest Hill, MD 21050
> >> 443-567-8328 (C)
> >> 410-306-0709 (O)
> >
> >--
> >NIH Resource for Macromolecular Modeling and Bioinformatics
> >Beckman Institute for Advanced Science and Technology
> >University of Illinois, 405 N. Mathews Ave, Urbana, IL 61801
> >Email: johns_at_ks.uiuc.edu Phone: 217-244-3349
> > WWW: http://www.ks.uiuc.edu/~johns/ Fax: 217-244-6078
> >
>
>
>
> --
> Nichols A. Romero, Ph.D.
> 1613 Denise Dr. Apt. D
> Forest Hill, MD 21050
> 443-567-8328 (C)
> 410-306-0709 (O) 

-- 
NIH Resource for Macromolecular Modeling and Bioinformatics
Beckman Institute for Advanced Science and Technology
University of Illinois, 405 N. Mathews Ave, Urbana, IL 61801
Email: johns_at_ks.uiuc.edu                 Phone: 217-244-3349
  WWW: http://www.ks.uiuc.edu/~johns/      Fax: 217-244-6078