AW: vmd-l: Re: Is there someway to render protein picture without background color?

From: Norman Geist (norman.geist_at_uni-greifswald.de)
Date: Thu Sep 19 2019 - 04:13:05 CDT

Hey John,

very cool new feature with that alpha channel output. I immediately tried it
and it perfectly worked with the Tachyon Optix Internal, however it didn't
work tough with the Interactive renderer. The interactive rendering window
is just black and the resulting image only contains the alpha channel by the
looks of things.

Bests
Norman Geis

> -----Ursprüngliche Nachricht-----
> Von: owner-namd-l_at_ks.uiuc.edu [mailto:owner-namd-l_at_ks.uiuc.edu] Im
> Auftrag von John Stone
> Gesendet: Mittwoch, 18. September 2019 17:19
> An: jiali wang <jialiwangnamd_at_gmail.com>
> Cc: namd-l_at_ks.uiuc.edu
> Betreff: Re: vmd-l: Re: namd-l: Is there someway to render protein picture
> without background color?
>
> Hi,
> As I mentioned, this is a feature in the new test versions of VMD 1.9.4,
> so you'll need to download the new version to get both the support for
> alpha channel (transparency) and PNG image file format, both of which
> are required for this feature. Try one of the VMD 1.9.4 test builds and
> let us know if you need further help.
>
> Best,
> John Stone
> vmd_at_ks.uiuc.edu
>
>
> On Wed, Sep 18, 2019 at 11:14:28AM -0400, jiali wang wrote:
> > Dear John,
> > Thank you so much for your reply. I am using ubuntu system with VMD
> > 1.93. I am trying to use TCL console to type the command you
provided.
> > it's says:
> > Info) Rendering current scene to 'alphachannel.png' ...
> > ERROR) Unrecognized image file extension, writing Targa file.
> > OptiXDisplayDevice) Total rendering time: 0.19 sec
> > Info) Rendering complete.
> > But, I found I can not open the output file. after I change the file
type
> > to TAG, I could open that, but it shows no transparent background
> > effect?
> > Do you know what happened??
> > thank you so much for your help!
> > best regards,
> > JIali
>
> --
> 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/

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