VMD-L Mailing List

From: Vani Vemparala (vanivemparala_at_gmail.com)
Date: Fri Oct 11 2013 - 05:24:09 CDT

John,

The VDW/Licorice representations with GLSL off and on are here:
http://www.imsc.res.in/~vani/vmd/GLSL-ON-OFF-protein-VDW-licorice.jpg

The same protein with 'NewCartoon' representation here:
http://www.imsc.res.in/~vani/vmd/GLSL-ON-OFF-protein.jpg

-Thank You
Vani

On Mon, Oct 7, 2013 at 10:37 PM, John Stone <johns_at_ks.uiuc.edu> wrote:

> Hi,
> I have to concur with Axel, something appears to be quite broken with the
> OpenGL driver on your Mac. I have heard that a number of other Mac users
> with
> Intel chips have had intermittent issues with various driver versions.
> I don't know if it's possible to roll back a driver update on MacOS, or
> whether you might be able to install a newer driver, but either way, the
> driver you have is clearly not working correctly. Since the screen is
> nearly
> all black, my guess is that they have a bug in the implementation of
> gl_FrontFacing, or something similar. There's a tiny sliver of blue from
> the
> curved portion of the "D" in VMD, which makes me think that this may be a
> bug with surface normal handling, likely specifically with gl_FrontFracing.
> What happens if you load a molecule and set the representation to VDW or
> CPK, or Licorice? Do you still see mostly black, or do any of the spheres
> show up? They are rendered with a different shader that doesn't depend on
> gl_FrontFacing, so that's why I ask. Another thing to try: disable cueing
> and see if that has any effect.
>
> Cheers,
> John Stone
> vmd_at_ks.uiuc.edu
>
> On Fri, Oct 04, 2013 at 07:33:13AM +0200, Axel Kohlmeyer wrote:
> > On Fri, Oct 4, 2013 at 6:30 AM, Vani Vemparala <vanivemparala_at_gmail.com>
> wrote:
> > > Hello all,
> > >
> > > I recently purchased a MAC mini with the following specifications:
> > >
> > > MAC OSX version 10.8.5
> > > Graphics Intel HD Graphics 4000 512 MB
> > > MAC mini specifications: 2.3 GHz Intel Core i7
> > > Memory 4 GB 1600 MHZ DDR3
> > >
> > > I installed VMD 1.9.1 (I tried both CUDA and NO-CUDA versions of VMD)
> and
> > > have been having problems with GLSL rendering. The VMD start up
> message is
> > > below and a figure comparing the VMD GUI window with and without GLSL
> > > rendering is located at:
> > > http://www.imsc.res.in/~vani/vmd/GLSL.jpg
> > >
> > > Any suggestions in this regard would be really helpful.
> >
> > looks like a broken OpenGL driver. happens a lot with intel chipset
> graphics.
> > the linux version of the intel driver had been very broken for OpenGL
> > with GLSL for the last 3-4 years or so and is behaving decently only
> > since about a couple of months ago .
> >
> > axel.
> >
> > >
> > > -Thanks
> > > Vani
> > > ------------------------------
> > >
> -----------------------------------------------------------------------------
> > > /Users/vani $ vmd
> > > Info) VMD for MACOSXX86, version 1.9.1 (February 4, 2012)
> > > 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, 8 CPUs detected.
> > > Info) OpenGL renderer: Intel HD Graphics 4000 OpenGL Engine
> > > Info) Features: STENCIL MDE MTX NPOT PP PS GLSL(OVF)
> > > Info) Full GLSL rendering mode is available.
> > > Info) Textures: 2-D (16384x16384), 3-D (2048x2048x2048),
> Multitexture (8)
> > > Info) Dynamically loaded 2 plugins in directory:
> > > Info) /Applications/VMD1.9.1.app/Contents/vmd/plugins/MACOSXX86/molfile
> > > vmd > Info) VMD for MACOSXX86, version 1.9.1 (February 4, 2012)
> > >
> --------------------------------------------------------------------------------------------------------------
> >
> >
> >
> > --
> > Dr. Axel Kohlmeyer akohlmey_at_gmail.com http://goo.gl/1wk0
> > International Centre for Theoretical Physics, Trieste. Italy.
>
> --
> NIH Center for Macromolecular Modeling and Bioinformatics
> Beckman Institute for Advanced Science and Technology
> University of Illinois, 405 N. Mathews Ave, Urbana, IL 61801
> http://www.ks.uiuc.edu/~johns/ Phone: 217-244-3349
> http://www.ks.uiuc.edu/Research/vmd/
>