VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Thu Aug 29 2002 - 09:40:40 CDT

Dear Pawel,
  Glad that fixed your problem.

  John Stone
  johns_at_ks.uiuc.edu

On Wed, Aug 28, 2002 at 08:37:34PM -0500, Pawel Kedzierski wrote:
>
> Dear John,
>
> Indeed there was a message "Cannot get stencil buffer". I've checked
> the X11 config and it turned out that the X server was running at 16bpp.
> I've changed that to 24bpp and everything works as expected. I would
> even say that the movement is smoother than on our SGI workstation :-),
> although it does flicker noticeably.
>
> Great thanks again,
>
> Pawel
>
> On Wed, Aug 28, 2002 at 02:58:20PM -0500, John Stone wrote:
> >
> > Dear Pawel,
> > Do you get any informational messages in the VMD console
> > when you switch the stereo mode to the scanline-interleaved mode
> > in VMD? If VMD encounters a problem acquiring a stencil buffer it
> > normally prints a message to the console when you switch modes.
> > I suspect that you may be encountering trouble getting a video mode
> > with a stencil buffer. Can you send me the console output from your
> > VMD session when you switch stereo modes? I expect it will help me
> > determine your problem. If you're indeed failing to get a stencil
> > buffer, then the easiest way to solve the problem is to make sure
> > that you've got the board running in a 32-bit color video mode, as
> > I found that the 16-bit color modes didn't want to provide me with
> > a stencil buffer. Let us know if you need more help with this.
> > It could also be that you've enabled a high resolution display mode,
> > antialiasing, and other options which may be competing with the stencil
> > buffer for video memory, choosing a medium resolution display mode
> > such as 1280x1024 initially might make it simpler to debug.
> >
> > You asked about the driver software/Windows etc: You don't need
> > any special drivers to use VMD with the scanline interleaved stereo
> > hardware such as the Eye3D, you just need to have a video mode that
> > has a stencil buffer, which any card will provide if you set it up
> > with the right video mode.
> >
> > Thanks,
> > John Stone
> > vmd_at_ks.uiuc.edu
> >
> > On Tue, Aug 27, 2002 at 11:49:49PM -0500, Pawel Kedzierski wrote:
> > ... <cut>
>
> --
> Pawel Kedzierski, kedziers_at_ccmsi.us
> Chemistry/CREST, Jacson State University 

-- 
NIH Resource for Macromolecular Modeling and Bioinformatics
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