VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Thu Jun 02 2005 - 15:12:06 CDT

Sabuj,
  The issue is that the old quadros use the older generation NVidia
GPU chips which are incapable of supporting the floating point fragment
shader operations required for GLSL. All of the newer (even cheap)
NVidia video boards are now capable of GLSL. The new Quadro 3x00 and 4x00
boards do GLSL, but not the older x00 series cards. The availability
of GL_ARB_shading_language_100 is only one of several extensions that
must be present in order for VMD to make use of programmable shading.
The one that's missing on the old Quadro is the fragment shader object.

  John Stone
  vmd_at_ks.uiuc.edu

On Thu, Jun 02, 2005 at 01:57:54PM -0500, sabuj pattanayek wrote:
> Hi all,
>
> Has anyone been able to get GLSL rendering mode working for Quadro's
> using any of the nvidia drivers including the latest 7664 under vmd
> 1.8.3? Does it work under windows for quadros?
>
> It always says GLSL(OV) is unavailable for our lab's quadro 750 and 980
> xgl's.
>
> I'm not sure why a sub $100 geforce 5500fx can render using glsl under
> linux but the $300+ quadros cannot, even though glxinfo shows the
> availability of GL_ARB_shading_language_100 .
>
> Thanks,
> Sabuj Pattanayek
>
>
> Warren DeLano wrote:
> >nVidia driver bug relieve, at last!
> >
> >The latest Linux driver build from NVidia (7664) seems to have fixed the
> >segmentation fault issues with PyMOL and hopefully VMD too.
> >
> ><http://www.nvidia.com/object/unix.html>
> >
> >If you are still experiencing problems, then please try uprading to this
> >new
> >driver. If the problems continue, then do please let us know -- but
> >hopefully that will not be necessary.
> >
> >Cheers,
> >Warren
> >
> >--
> >Warren L. DeLano, Ph.D.
> >Principal Scientist
> >
> >. DeLano Scientific LLC
> >. 400 Oyster Point Blvd., Suite 213
> >. South San Francisco, CA 94080 USA
> >. Biz:(650)-872-0942 Tech:(650)-872-0834
> >. Fax:(650)-872-0273 Cell:(650)-346-1154
> >. mailto:warren_at_delsci.com
> >
> >
> >
> >
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-- 
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
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