VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Mon Apr 26 2004 - 11:58:41 CDT

Dallas,
  What happens if you turn off the Display->antialiasing checkbox
and then use Snapshot again? Its possible that ATI's new drivers
don't work entirely correctly in that regard, and since its reporting
6-samples per pixel, that uses a LOT of video memory. Give that a shot
and let me know if you get any different behavior. If you have a chance,
you might also try an another run of their 'fglrxconfig' utility with
less agressive performance options to see if that cures the corrupted
snapshot renderings you're getting. The FireGL X1 I've tested with here
worked fine with older revs of the ATI drivers, but I've definitely
seen bugs in some of the newer versions on my test machine, which I've
reported to them already.

  John Stone
  vmd_at_ks.uiuc.edu

On Mon, Apr 26, 2004 at 07:11:12AM +1000, Dallas Warren wrote:
> John,
>
> > Send your VMD OpenGL startup messges, I'm curious to see what features
> >its finding on your FireGL X1, as I've got a 128MB FireGL X1 here that
> >never exhibited this particular problem, though I've been running an
> >older driver version due to bugs I've experienced with the newer ones.
>
> Info) VMD for LINUX, version 1.8.2 (December 4, 2003)
> Info) http://www.ks.uiuc.edu/Research/vmd/
> Info) Email questions and bug reports to vmd_at_ks.uiuc.edu
> Info) Please include this reference in published work using VMD:
> Info) Humphrey, W., Dalke, A. and Schulten, K., `VMD - Visual
> Info) Molecular Dynamics', J. Molec. Graphics 1996, 14.1, 33-38.
> Info) -------------------------------------------------------------
> Info) Multithreading available, 2 CPUs detected.
> Info) OpenGL renderer: Fire GL X1 Pentium 4 (SSE2) (FireGL) (GNU_ICD)
> Info) Features: STENCIL MSAA(6) RN MTX TCM
> Info) Textures: 2-D (2048x2048), 3-D (2048x2048x2048), Multitexture (8)
>
> Catch ya,
>
> Dr. Dallas Warren
> Research Fellow
> Department of Pharmaceutical Biology and Pharmacology
> Victorian College of Pharmacy, Monash University
> 381 Royal Parade, Parkville VIC 3010
> dallas.warren_at_vcp.monash.edu.au
> +61 3 9903 9083
> --------------------------------------------------------------------------
> When the only tool you own is a hammer, every problem begins to resemble a
> nail. 

-- 
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