From: Norman Geist (norman.geist_at_uni-greifswald.de)
Date: Thu Nov 27 2014 - 03:19:00 CST

> -----Ursprüngliche Nachricht-----
> Von: owner-vmd-l_at_ks.uiuc.edu [mailto:owner-vmd-l_at_ks.uiuc.edu] Im
> Auftrag von John Stone
> Gesendet: Mittwoch, 26. November 2014 20:42
> An: Norman Geist
> Cc: VMD Mailing List
> Betreff: Re: vmd-l: Re: Need testers: VMD 1.9.2 w/ interactive GPU ray
> tracing w/ AO, depth of field, etc.
>
> Norman,
> Thanks for the note. The depth of field focal blur effect
> will work fine on any size structure if the aperature (f/stop number)
> and focal distance are set appropriately. It is easiest to adjust
> these parameters while using the interactive ray tracer, since you can
> see the effects of changing parameters immediately.
>
> That said, it is critically important to note that depth-of-field is
> currently only available when rendering with a perspective projection.
>
> If you're using orthographic projection, the depth of field effect will
> be disabled in both Tachyon and in the GPU-accelerated TachyonL-OptiX
> renderers in VMD.

Guess this was the issue =D
After some playing with the arrow keys I was able to produce a nice picture.

>
> Thanks for noting about OptiX working for you over ssh now. Did you
> have
> to change anything on your end, or just running the new VMD version
> solved the problem?? If just running the new version solved the
> problem,
> this may be due to the newer version of the OptiX library that's linked
> into
> the latest test builds.

No, i didn't change anything on my site, simply using
vmd-1.9.2beta1optixtest4 solved it.
Thanks.

>
> Cheers,
> John Stone
> vmd_at_ks.uiuc.edu
>
> On Wed, Nov 26, 2014 at 09:32:21AM +0100, Norman Geist wrote:
> > Hey John,
> >
> > The 1st thing that came to my mind when I tried the interactive
> Tachyon was:
> > "Cool" ;D
> > I didn't really understood how the depth-of-field blur is supposed to
> work,
> > maybe it only shows effect
> > on rather large systems which actually have a particular physical
> depth.
> >
> > Away from that, using Optix via ssh now also works for us.
> >
> > Norman Geist.
> >
> > > -----Ursprüngliche Nachricht-----
> > > Von: owner-vmd-l_at_ks.uiuc.edu [mailto:owner-vmd-l_at_ks.uiuc.edu] Im
> > > Auftrag von John Stone
> > > Gesendet: Donnerstag, 13. November 2014 07:22
> > > An: vmd-l_at_ks.uiuc.edu
> > > Betreff: vmd-l: Re: Need testers: VMD 1.9.2 w/ interactive GPU ray
> > > tracing w/ AO, depth of field, etc.
> > >
> > > Hi,
> > > I've posted another updated test version of VMD with the
> > > interactive GPU-accelerated ray tracer. The new version adds
> > > support for depth-of-field effects (see new items at the bottom of
> the
> > > "Display Settings" menu), and many other improvements:
> > > http://www.ks.uiuc.edu/Research/vmd/alpha/optix/
> > >
> > > I will be posting new example images with depth of field and
> > > other features tomorrow as I get a chance.
> > >
> > > Cheers,
> > > John Stone
> > > vmd_at_ks.uiuc.edu
> > >
> > >
> > > On Thu, Oct 30, 2014 at 11:33:12AM -0500, John Stone wrote:
> > > > Hi,
> > > > Since VMD 1.9.2 beta 1 was released, I have been working
> > > > hard on making the first version of a new interactive GPU ray
> > > > tracing feature available before VMD 1.9.2 ships. I have had
> > > > a small group of people testing the code up until now, but I
> > > > think it's time to get feedback from a broader range of users,
> > > > particularly since several hundred people have already been
> > > > downloading and testing the previous VMD beta version that
> > > > includes the batch-only version of the GPU ray tracer.
> > > >
> > > > The new VMD build _REQUIRES_ the latest NVIDIA driver versions.
> > > > You MUST be running NVIDIA driver version 344.xx or later
> otherwise
> > > > you will not be able to use new GPU ray tracer.
> > > > Best results will be obtained on GPUs that contain several
> gigabytes
> > > > of GPU memory. GPUs with 4GB of memory are in the sweet spot
> where
> > > > you can render even fairly large scenes without running out of
> > > memory.
> > > >
> > > > The reward for going through the trouble to update to the latest
> > > > driver version is that this new version of VMD can do real-time
> > > > interactive ray tracing for large molecular scenes, at rates of
> > > > 20 to 60 frames per second, even when sophisticated rendering
> > > > effects such as ambient occlusion light or depth of field are
> > > > enabled, by virtue of the use of a progressive rendering approach
> > > > that refines the image when the view orientation is not changing.
> > > >
> > > > The new interactive GPU ray tracer is currently listed in the VMD
> > > > File|Render menu as "TachyonL-OptiX (live real-time GPU
> display)".
> > > >
> > > > The interactive ray tracer will open a new graphics display
> window,
> > > > which uses similar control keys to the main VMD graphics display,
> > > > and it also supports the use of the SpaceNavigator input devices.
> > > >
> > > > I have posted a 64-bit Linux VMD test build for RHEL 5.x systems,
> > > > and I'm writing initial documentation for it here:
> > > > http://www.ks.uiuc.edu/Research/vmd/alpha/optix/
> > > >
> > > > The new VMD test version also supports depth-of-field rendering
> in
> > > > the standard CPU versions Tachyon, and POV-Ray.
> > > >
> > > > I would appreciate feedback users have when they begin testing
> > > > the new features. I will be updating the documentation as
> > > > questions, problems, and solutions arise.
> > > >
> > > > Cheers,
> > > > John Stone
> > > > vmd_at_ks.uiuc.edu
> > > >
> > > > --
> > > > 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/
> > >
> > > --
> > > 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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>
> --
> 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/