From: John Stone (
Date: Mon Oct 24 2005 - 13:15:07 CDT

  It sounds to me like there's something amiss with your video driver.
The startup messages VMD is printing indicate that you have at least got
minimal 3-D texturing support, though the max texture dimension is small.
That test version of VMD you're using has automatic texture downsampling
code so it should be attempting to squeeze the texture into the 128^3 limit
of your video card, even if your DX map is much larger. GLSL doesn't play
a factor in the specific problem you're having. Can you verify that you've
got the most recent video driver for your machine? Please double check
that and get back to me. How big is the DX map you're loading? Can you
email me the messages that VMD prints in the console when you load it?

  John Stone

On Mon, Oct 24, 2005 at 05:38:40PM +0200, wrote:
> Dear all,
> I have a problem with VMD (original, isn't it?)...
> I am currently using VMD 1.8.4 on windows2000 pro and I tried to visualize
> a potential map generated with this same VMD but it didn't work...the
> surface stays definitely white, even as I try to modify the color range in
> the graphics > color interface.
> When I tried the map I generated directly on my colleague's Linux version
> (1.8.3) I could visualize it. So I tried to visualize it through VNC on my
> PC but it is desperately white...
> So do you have any solution for me...
> When I launch VMD, I have the following messages :
> Info) VMD for WIN32, version 1.8.4a22 (October 11, 2005)
> Info)
> Info) Email questions and bug reports to
> 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) OpenGL renderer: Intel 915G
> Info) Features: STENCIL MDE CVA MTX PP
> Info) GLSL rendering mode is NOT available.
> Info) Textures: 2-D (2048x2048), 3-D (128x128x128), Multitexture (8)
> Can my problem be linked to the fact that GLSL rendering is not available?
> (what is GLSL? :-s)
> I am sorry if this problem has already been resolved within the mailing
> list, but I am new and I don't have much time to read all the previous
> messages of the list...
> Thanks in advance for any answer,

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