From: John Stone (
Date: Mon May 28 2007 - 15:32:26 CDT

  At present, in order to use the "snapshot" rendering method on Unix systems,
you must run VMD with a fully functional windowing system (either
by local connection or by setting DISPLAY appropriately). If you want
to run VMD in text mode, you can still use the various other rendering
methods like Tachyon, TachyonInternal, POV3, and other renderers
that don't need a connection to the windowing system.

  John Stone

On Sun, May 27, 2007 at 06:05:03PM -0300, Cesar Luis Avila wrote:
> I read on the documentation that taychon does not support clipping
> planes, which is a very important feature for me in this case.
> Is there a way in linux to create such a buffer through ssh? ssh -X is
> not a solution since it uses the rendering capabilities of the local
> machine.
> Regards
> Cesar
> Axel Kohlmeyer escribió:
> >On Thu, 24 May 2007, Cesar Luis Avila wrote:
> >
> >
> >cesar,
> >
> >CLA> I would like to render a picture in a remote server with vmd using
> >GLSL CLA> capabilities. I connect to the server using ssh, and launch the
> >script using
> >CLA>
> >CLA> vmd -dispdev text < renderpicture.tcl > logfile
> >CLA>
> >CLA> Within the script I have a line
> >CLA> display rendermode GLSL
> >CLA> render snapshot picture.tga
> >
> >to render a snapshot, you have to have a buffer to take it from.
> >if you run in textmode, this buffer does not exist.
> >
> >you can try, e.g., the TachyonInternal renderer instead.
> >there will be some differences and some unsupported
> >features, however, tachyon is usually (for obvious reasons)
> >closest to the snapshot output.
> >
> >cheers,
> > axel.
> >
> >CLA>
> >CLA> but in the log file I see
> >CLA> ERROR) Illegal rendering mode: GLSL
> >CLA> Info) Rendering current scene to 'picture.tga' ...
> >CLA> Info) Rendering complete.
> >CLA>
> >CLA> And the picture file is empty.
> >CLA>
> >CLA> Since there is no display device it sounds logical that there is no
> >CLA> picture to render. Is there a way to overcome this?
> >CLA>
> >
> >

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