VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Tue Jul 15 2003 - 23:33:55 CDT

Romaric,
  Can you try running the test version of VMD that we've got
posted here and let me know if it yields any interesting OpenGL
errors or warnings as it runs? If there are any OpenGL errors
this version will complain about them and return a bit of minimal
info. If you get errors, then we'll proceed to the next step and I'll
build you a binary that has more aggressive OpenGL debugging enabled
and we can figure out why your display gets the funny initialization
problem sometimes:
  ftp://ftp.ks.uiuc.edu/pub/mdscope/vmd/alpha/

Thanks,
  John Stone
  vmd_at_ks.uiuc.edu

On Sat, Jul 12, 2003 at 01:20:52PM +0200, Romaric David wrote:
> John Stone wrote:
> >
> > Romaric,
> > Interesting. It is possible that this is a bug in VMD, the CAVE code
> > is very complicated due to tricky management of shared memory regions.
> >
> > Can you tell me some more about the problem you're experiencing?
> > Is this behavior "once per session" running VMD, or
> > does the B&W image come and go as VMD runs? Or, to put it another way,
> > if VMD starts up and looks fine, does it stay that way as you continue
> > to use it, or does this problem with B&W come and go as it runs?
> As far as I've seen (I've tried many times), it is a once per session
> behaviour : if it starts OK, it will stay OK.
>
> The good sign is to look at the x,y,z axes that are drawn as cylinders
> even if the molecule is represented as lines :
> - if they are in colour since the beginning, then the molecule will display OK
> - if they are B&W, the molecule on the lower screen will be B&W
> - if only the letters x,y,z show, the molecule won't be drawn on the lower
> screen.
>
> >
> > I can provide you with a test version of VMD 1.8.2 that has OpenGL
> > graphics debugging code enabled that you can use to run some further
> > tests if you're interested.
> Yes, I'd be glad to test it and maybe find track of this problem.
>
> Thanks,
> Romaric
> --
> --------------------------------------
> R. David - david_at_icps.u-strasbg.fr
> Tel. : 03 90 24 45 48 (Fax 45 47)
> -------------------------------------- 

-- 
NIH Resource for Macromolecular Modeling and Bioinformatics
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