VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Fri Aug 03 2018 - 08:30:47 CDT

Peter,
  Try the test version of VMD 1.9.4 and let me know if you still
observe the same phenomena.

Best,
  John

On Fri, Aug 03, 2018 at 11:17:28AM +0200, Peter Kroon wrote:
> Hi John,
>
>
> no worries, well deserved holidays (and conferences) get priority :)
>
> The TachyonInternal does handle DoF correctly (other than the inversion
> of dof_fnumber). But the problem I have there is that I can't simply
> tell it to make an image at a resolution of 3kx4k.
>
> Scene generation for Tachyon external does work (mostly), but the
> external Tachyon seems to ignore the FocalLength parameter.
>
>
> Which VMD test version are you referring to exactly? I'm running 1.9.3
> at the moment.
>
>
> Peter
>
>
> On 02-08-18 18:58, John Stone wrote:
> > Hi,
> > Sorry for the slow response, I'm still digging out of a pile of emails
> > that accumulated while I was away from the office for a few weeks.
> > Did you try using the built-in version of Tachyon I ship with VMD itself?
> >
> > Tachyon always had DoF, but the parameterization has changed somewhat from
> > the old versions to now, and the way VMD talks to Tachyon has changed also.
> >
> > I haven't made the bleeding edge version of the Tachyon code available yet
> > because I've been revising its API to allow it to support interactive ray
> > tracing for machines that lack GPUs, and that aren't supported by OSPRay.
> >
> > If you have a problem that crops up with the test VMD build (and its built-in
> > version of Tachyon) on the web site, then let me know and I will address it.
> > If TachyonInternal works but the external does not, that may be a scene
> > file generation issue (two different code paths). In any case, it should
> > be easy to resolve any loose ends that may arise here.
> >
> > Best,
> > John
> >
> > On Wed, Aug 01, 2018 at 10:48:45AM +0200, Peter Kroon wrote:
> >> Hi all!
> >>
> >> I sent this mail earlier, but I think it got buried in everyone's
> >> holidays. Does anyone who's just come back from their well-earned
> >> holidays and conferences have any insights?
> >>
> >>
> >> Peter
> >>
> >>
> >> On 09-07-18 16:36, Peter Kroon wrote:
> >>> Hello world!
> >>>
> >>>
> >>> I would like to turn a VMD scene into a pretty picture. I want this
> >>> picture to be high resolution (~3315x4000px), and using AO and Depth of
> >>> Field. I have tried the following, continually running into issues:
> >>>
> >>> 1) Use Tachyon-OptiX: I can't put the desired resolution. If I do, it
> >>> fails immediately with a memory error. See also
> >>> http://www.ks.uiuc.edu/Research/vmd/mailing_list/vmd-l/27940.html
> >>>
> >>> 2) Use Tachyon internal: Creates a super fuzzy picture, probably because
> >>> the meaning of 'Aperture' changed from 'x' to '1/x'.
> >>>
> >>> 3) Use external Tachyon renderer: If I fix the 'Aperture'; and changing
> >>> FocalDist to FocalLength I *almost* get the picture I want, but it seems
> >>> the FocalLength option is simply ignored (see also
> >>> http://www.ks.uiuc.edu/Research/vmd/mailing_list/vmd-l/15285.html). This
> >>> happens with both 0.98.9 and 0.99b6.
> >>>
> >>> Does anyone have anything else I can try? I build all the software from
> >>> source, in case it matters.
> >>>
> >>>
> >>> Peter
> >>>
> >>
> >
> >
>
> 

-- 
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/