VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Wed Aug 28 2002 - 14:58:20 CDT

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:
>
> Dear VMD list,
>
> I have installed VMD (1.7.1) on a RedHat 7.3, Nvidia Quattro
> with Nvidia drivers, and connected the Eyes3D Premium adptor, emitter
> and glasses. The emitter and glasses are functional, i.e. i am able to
> switch the stereo modes. I run VMD and I switch the stereo
> "line-blanking" mode, but I don't see the 3D display. I believe
> that without the glasses I should recognize than odd and even lines
> display shifted images, but it does not happen.
>
> What else should I do? Does VMD need some special X11 mode? or
> drivers? I've read VMD supports stereo with this hardware, but the
> Eyes3D kit come with windows-drivers only.
>
> Thank You in advance,
>
> Pawel Kedzierski
>
> --
> Pawel Kedzierski, kedziers_at_ccmsi.us
> Chemistry/CREST, Jacson State University 

-- 
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