VMD-L Mailing List

From: Norman Geist (norman.geist_at_uni-greifswald.de)
Date: Fri Apr 08 2016 - 01:46:12 CDT

Could you maybe provide a screenshot?

Norman Geist

> -----Ursprüngliche Nachricht-----
> Von: owner-vmd-l_at_ks.uiuc.edu [mailto:owner-vmd-l_at_ks.uiuc.edu] Im Auftrag
> von Yoav Atsmon-Raz
> Gesendet: Donnerstag, 7. April 2016 22:35
> An: johns_at_ks.uiuc.edu
> Cc: vmd-l_at_ks.uiuc.edu
> Betreff: RE: vmd-l: setting up a 4k HD TV for passive stereoscopic 3d
>
> Hi John, i actually changed the scanning option of the TV to "just scan"
from its
> factory setting and the row interleaved option started to work although
the
> axises' are not being rendered correctly. Is it suppose to be this way? Is
there
> anyway to fix this? Generally we still have some anomalies at the sides of
the
> screen although whenever something appears primarily in the center, it
seems
> just fine.
>
> Thanks in advance, Yoav
> ________________________________________
> From: owner-vmd-l_at_ks.uiuc.edu [owner-vmd-l_at_ks.uiuc.edu] on behalf of
> Norman Geist [norman.geist_at_uni-greifswald.de]
> Sent: Wednesday, April 06, 2016 11:30 PM
> To: 'John Stone'
> Cc: VMD Mailing List
> Subject: AW: vmd-l: setting up a 4k HD TV for passive stereoscopic 3d
>
> I agree with John,
>
> we do also use passive 3D displays with VMD and it works as easy as:
>
> 1. Set the display resolution to the TVs native resolution, otherwise row
> interleaved stereo won't ever work. (think about it)
> 2. Leave the 3D options of the TV totally untouched, do not even activate
> it. Everything is already in place on the screen of your TV having row
> interleaved polarization filters.
> 3. Set VMD to row interleaved and potentially swap eyes. (Remember moving
> the VMD graphics window only one pixel in Y direction will cause the eyes
to
> swap again, so you may want to adjust the eyes to fullscreen)
>
> Good luck
>
> 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, 7. April 2016 02:19
> > An: Yoav Atsmon-Raz <yoav.atsmonraz_at_ucalgary.ca>
> > Cc: vmd-l_at_ks.uiuc.edu
> > Betreff: Re: vmd-l: setting up a 4k HD TV for passive stereoscopic 3d
> >
> > Hi,
> > It seems from the list below that you did not yet try setting VMD to
> > row-interleaved stereo while the TV is set to the normal display mode,
> > i.e. leaing the TV in a non-3D display mode and having VMD do all of the
> > stereo processing. I would recommend trying that combination rather
than
> the
> > approach of things you tried up to this point. You will also want to
make
> > sure that your GPUs are driving the TV in a so-called 4:4:4 color mode
> > where there is no chrominance downsampling, as that would interfere with
> > correct stereoscopic display. On the LG TVs you may also want to set
the
> > TV to "video game" mode, so that it disables any post-processing
> > motion compensation filters that can smear out the row-interleaved
> > stereo that VMD generates.
> >
> > Cheers,
> > John Stone
> > vmd_at_ks.uiuc.edu
> >
> > On Wed, Apr 06, 2016 at 07:49:10PM +0000, Yoav Atsmon-Raz wrote:
> > > Hi John,
> > >
> > > Strangely part of my message was cut out from the original message so
> i'll post
> > it now instead:
> > > ---------------------------------
> > > Our setup is as follows:
> > >
> > > GPUs: 2 X Nvidia Gefroce 980 Ti using the Nvidia 352.63 driver
> > > OS: Ubuntu 14.04
> > > The CPU/RAM is a X99 Workstation with a Xeon octocore and 32 GB of
> ram.
> > >
> > > Things we tried so far:
> > > 1) Swapping out HDMI cables;
> > > 2) removing SLI bridge
> > > 3) switching from Unity to XFCE4
> > > 4) reinstalling nvidia drivers
> > > 5) testing the 3d TV on its own 3d self test that worked great.
> > > 6) Trying to visualize the same molecule with Chimera (same problem).
> > >
> > > We're really at a loss for ideas here and are willing to try anything,
> so if anyone
> > has a suggestion based on their own experience with passive 3d tvs, i'll
> be more
> > then happy to hear about it.
> > >
> > > Thanks in advance, Yoav
> > > ---------------
> > >
> > >
> > > ________________________________________
> > > From: John Stone [johns_at_ks.uiuc.edu]
> > > Sent: Wednesday, April 06, 2016 1:31 PM
> > > To: Yoav Atsmon-Raz
> > > Cc: vmd-l_at_ks.uiuc.edu
> > > Subject: Re: vmd-l: setting up a 4k HD TV for passive stereoscopic 3d
> > >
> > > Hi,
> > > We will need more information to be able to help you out.
> > > In general, you have two major approaches for using passive
> > > stereo on a TV. One way is to depend on the GPU and its graphics
> > > driver to supply quad-buffered stereo, and drive the TV using
> > > an HDMI stereo 3-D signal and video mode. In that mode, you would
> > > tell VMD to use quad-buffered stereo in the Display | Stereo menu,
> > > and you might need to set the TV mode to enable 3-D display.
> > >
> > > The other way of getting stereo is to run the TV in a normal
> > > (non-stereo) display mode, and leave the GPU driver set with
> > > quad-buffered stereo off/disabled. In that mode, VMD would
> > > generate the stereo signal itself using row-interleaved
> > > OpenGL rasterization in software, and you will need to ensure
> > > the correct left/right eye mapping by turning on/off the stereo
> > > eye swap feature in the Display | Stereo menu if you move
> > > the OpenGL window around on the screen.
> > >
> > > If you can tell us more specifically exactly what steps you've
> > > taken we can give further guidance.
> > >
> > > Cheers,
> > > John Stone
> > > vmd_at_ks.uiuc.edu
> > >
> > >
> > > On Wed, Apr 06, 2016 at 06:45:49PM +0000, Yoav Atsmon-Raz wrote:
> > > > Greetings everyone, recently our research group has purchased an LG
> > UF8500 4k HDTV that has passive spectroscopic 3d integrated into it and
we
> are
> > interested in using it to display proteins with VMD. We have used the
> stereo>rows
> > option and while we do get a 3d image the protein appears as horizontal
> stacks
> > that push out of the screen instead of a spheroid shape which we should
be
> > getting. We also tried every of the other options in the stereo menu,
but
> neither
> > one of them is giving us the right shape in terms of depth
> > > --
> > > 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/
>