[Paraview] Mono and Stereo Rendering in the CAVE
Aashish Chaudhary
aashish.chaudhary at kitware.com
Wed Mar 30 09:22:45 EDT 2016
On Tue, Mar 29, 2016 at 11:14 PM, Faiz Abidi <fabidi89 at vt.edu> wrote:
> Aashish and David - the stereo is off (0) in the xorg.conf file. Paul (
> CC'd) told me the reason for that - "If stereo is enabled that interferes
> with the nvidia driver-level blending. This is a known issue in linux.
> Nvidia has put it on their RFE list but it is not clear when it will be
> done/fixed." So, I can't do what that link suggested. Although, I still
> tried :) Outcome was weird. I tested on one wall, and what was happening
> was that I saw left eye for a while, and then that faded, and then I got
> the right eye for a while, and then that faded, and again I got a left
> eye. I got both eyes for a while as well, but then it again faded. This
> process continued, clearly suggesting that there's some issue at the driver
> level as Paul mentioned.
>
I might be a recent issue since in the past we tried this successfully.
> Btw, Crystal eyes didn't work like before, and threw OpenGL errors.
>
This is strange that suggests me that something is still wrong in the setup
(It's hard to tell unless I can access the system).
> So, I tested the above using Anaglyph.
>
> Mark - I am using 1 process per DISPLAY (or projector you could say). We
> have 8 projectors here each doing left, and right eye active stereo. So, I
> would spawn 16 processes when I can get active stereo to work.
>
> I think at this point we have no choice but to look into editing the
> source code of Paraview, and see if we can customize it for our CAVE.
> This issue seems like unique.
>
Given all the errors problems you are having, Passive stereo would be the
way to go. Passive stereo use-case is not unique per say though.
> If you have any suggestions on where I should start looking into, that
> would be great help!
>
> If anyone has any other ideas, I am happy to listen, and test it here.
>
> On Tue, Mar 29, 2016 at 2:44 PM, Stock, Mark <Mark.Stock at nrel.gov> wrote:
>
>> Faiz,
>>
>> Number 3 strikes me as odd: your graphics card and projectors should be
>> capable of quad-buffered stereo, so you should only be using one MPI
>> process per projector (i.e. 1 process per DISPLAY).
>>
>> I agree with previous posters in that you should try to get the
>> synchronization with your glasses working first. How are the projectors
>> synchronized (and what kinds of video cards are you using)?
>>
>> Mark
>> (manages a 6-projector stereo setup at NREL and heavy user of ParaView)
>>
>> From: ParaView <paraview-bounces at paraview.org<mailto:
>> paraview-bounces at paraview.org>> on behalf of Faiz Abidi <fabidi89 at vt.edu
>> <mailto:fabidi89 at vt.edu>>
>> Date: Saturday, March 26, 2016 at 12:19 AM
>> To: Aashish Chaudhary <aashish.chaudhary at kitware.com<mailto:
>> aashish.chaudhary at kitware.com>>
>> Cc: Nicholas Polys <npolys at vt.edu<mailto:npolys at vt.edu>>, Lance
>> Arsenault <lanceman at vt.edu<mailto:lanceman at vt.edu>>, "
>> paraview at paraview.org<mailto:paraview at paraview.org>" <
>> paraview at paraview.org<mailto:paraview at paraview.org>>
>> Subject: Re: [Paraview] Mono and Stereo Rendering in the CAVE
>>
>> Hi Ashish,
>>
>> Thanks for your email. I was just now reading an old thread by you on a
>> similar topic answering someone's query on a similar problem.
>>
>> 1. Yes, you are right. Two projectors per wall doing active stereo. So,
>> in my PVX file, for doing only one half of the wall, I define Display=:0.0
>> (left eye) and Display=:0.1 (right eye).
>>
>> 2. Yes, active stereo on each half of the wall.
>>
>> 3. Umm, no. Here's what's happening. Sorry if I didn't explain properly
>> before. I use two processes to drive one half of the wall using mpi. I put
>> on glasses and don't see anything with my right eye and see two images with
>> my left. I tend to think this is where I am doing something wrong. I tried
>> using 1 process to drive one half of the wall but same result.
>>
>> I just tried running glxgears in stereo and see an error - "Error:
>> couldn't get an rgb double-buffered visual". :/ But I am running
>> InstantReality projects in the same CAVE using stereo. This is a bit weird.
>>
>> Btw, I am using one powerful machine with 4 graphics card on it to drive
>> the entire CAVE.
>>
>> Thanks again for your help! If you have any more ideas, I would be glad
>> to hear.
>>
>> On Fri, Mar 25, 2016 at 11:45 PM, Aashish Chaudhary <
>> aashish.chaudhary at kitware.com<mailto:aashish.chaudhary at kitware.com>>
>> wrote:
>> Hi Faiz,
>>
>> Few things:
>>
>> 1| You have two projectors per wall each covering half of the wall
>> 2| You are trying to do active stereo on each half part of the wall
>> 3| You put glasses on and you see both left and right eye on the half
>> wall from the same projector
>>
>> If this is the case, it sounds like your active stereo is not working.
>> Are you sure your driver is setup up correctly? Before you try to work on
>> cluster setup, just try working on one projector for debugging purposes. If
>> I were you I would do this:
>>
>> 1) Just use PVX to run on one projector (half wall)
>> 2) Make sure your driver is setup correctly. If this is linux try running
>> glxgears in stereo mode (
>> http://manpages.ubuntu.com/manpages/karmic/man1/glxgears.1.html)
>> 3) If 2) works then something is wrong with VTK/ParaView/Config somewhere.
>> 4) Make sure that your active glasses are working meaning that they are
>> syncing with the transmitter which is connected to the node
>>
>> Hope this helps.
>>
>>
>>
>>
>> On Fri, Mar 25, 2016 at 7:28 PM, Faiz Abidi <fabidi89 at vt.edu<mailto:
>> fabidi89 at vt.edu>> wrote:
>> Alright, I updated the pvx file some, just the correct coordinates.
>>
>> <?xml version="1.0" ?>
>> <pvx>
>> <Process Type="client" />
>> <Process Type="server">
>> <!-- Tiled wall in Kitware -->
>> <EyeSeparation Value="0.065"/>
>> <Machine Name="CTL"
>> Environment="DISPLAY=:0.4"
>> Geometry="2560x1600+0+0"
>> FullScreen="0"
>> ShowBorders="0"
>> LowerLeft="-1.524 -0.381 -1.524"
>> LowerRight="1.524 -0.381 -1.524"
>> UpperRight="1.524 1.524 -1.524"/>
>> <Machine Name="CTR"
>> Environment="DISPLAY=:0.5"
>> Geometry="2560x1600+0+0"
>> FullScreen="1"
>> ShowBorders="0"
>> LowerLeft="-1.524 -0.381 -1.524"
>> LowerRight="1.524 -0.381 -1.524"
>> UpperRight="1.524 1.524 -1.524"/>
>> <Machine Name="CBL"
>> Environment="DISPLAY=:0.6"
>> Geometry="2560x1600+0+0"
>> FullScreen="1"
>> ShowBorders="0"
>> LowerLeft="-1.524 -1.524 -1.524"
>> LowerRight="1.524 -1.524 -1.524"
>> UpperRight="1.524 0.381 -1.524"/>
>> <Machine Name="CBR"
>> Environment="DISPLAY=:0.7"
>> Geometry="2560x1600+0+0"
>> FullScreen="1"
>> ShowBorders="0"
>> LowerLeft="-1.524 -1.524 -1.524"
>> LowerRight="1.524 -1.524 -1.524"
>> UpperRight="1.524 0.381 -1.524"/>
>> </Process>
>> </pvx>
>>
>> I tried attaching an image for reference but my email didn't go through.
>> I can see the two images (left eye, right eye) with an eye separation of
>> 0.065, but for some reason, I see both the images with stereo glasses on in
>> each eye. Any more ideas?
>>
>> Lance (CC'd) had an idea that maybe, we can do passive stereo rendering
>> as well. Would you recommend that given our projectors here do support
>> active stereo? I am still trying though to make it work with active stereo.
>> Is there someway to define the viewpoints in the pvx file? Also, is there
>> some kind of a schema for this pvx file published somewhere?
>>
>> Thanks for all your help!
>>
>> On Fri, Mar 25, 2016 at 6:04 PM, Faiz Abidi <fabidi89 at vt.edu<mailto:
>> fabidi89 at vt.edu>> wrote:
>> Alright, I updated the pvx file some, just the correct coordinates.
>>
>> <?xml version="1.0" ?>
>> <pvx>
>> <Process Type="client" />
>> <Process Type="server">
>> <!-- Tiled wall in Kitware -->
>> <EyeSeparation Value="0.065"/>
>> <Machine Name="CTL"
>> Environment="DISPLAY=:0.4"
>> Geometry="2560x1600+0+0"
>> FullScreen="0"
>> ShowBorders="0"
>> LowerLeft="-1.524 -0.381 -1.524"
>> LowerRight="1.524 -0.381 -1.524"
>> UpperRight="1.524 1.524 -1.524"/>
>> <Machine Name="CTR"
>> Environment="DISPLAY=:0.5"
>> Geometry="2560x1600+0+0"
>> FullScreen="1"
>> ShowBorders="0"
>> LowerLeft="-1.524 -0.381 -1.524"
>> LowerRight="1.524 -0.381 -1.524"
>> UpperRight="1.524 1.524 -1.524"/>
>> <Machine Name="CBL"
>> Environment="DISPLAY=:0.6"
>> Geometry="2560x1600+0+0"
>> FullScreen="1"
>> ShowBorders="0"
>> LowerLeft="-1.524 -1.524 -1.524"
>> LowerRight="1.524 -1.524 -1.524"
>> UpperRight="1.524 0.381 -1.524"/>
>> <Machine Name="CBR"
>> Environment="DISPLAY=:0.7"
>> Geometry="2560x1600+0+0"
>> FullScreen="1"
>> ShowBorders="0"
>> LowerLeft="-1.524 -1.524 -1.524"
>> LowerRight="1.524 -1.524 -1.524"
>> UpperRight="1.524 0.381 -1.524"/>
>> </Process>
>> </pvx>
>>
>> Attached is one image for reference. I can clearly the two images with an
>> eye separation of 0.065, but for some reason, I see both the images with
>> stereo glasses on. Any more ideas?
>>
>> Lance (CC'd) had an idea that maybe, we can do passive stereo rendering
>> as well. Would you recommend that given our projectors here do support
>> active stereo? I am still trying though to make it work with active stereo.
>> Is there someway to define the viewpoints in the pvx file? Also, is there
>> some kind of a schema for this pvx file published somewhere?
>>
>> Thanks for all your help!
>>
>> On Fri, Mar 25, 2016 at 4:55 PM, Faiz Abidi <fabidi89 at vt.edu<mailto:
>> fabidi89 at vt.edu>> wrote:
>> I can see the error from both the client, and the server.
>>
>> Just tried RedBlue and I got a left eye but no right eye. When I changed
>> the server's type to from Same as Client to CrystalEyes, I get the same
>> errors in vtkOpenGLCamera.cxx.
>>
>> On Fri, Mar 25, 2016 at 4:34 PM, David E DeMarle <
>> dave.demarle at kitware.com<mailto:dave.demarle at kitware.com>> wrote:
>> Is that error message from the client or server process?
>>
>> Also, try just RedBlue at first and verify that you get two perspectives.
>> Then in the properties panel, change the server's type to from Same as
>> Client to CrystalEyes.
>>
>>
>> David E DeMarle
>> Kitware, Inc.
>> R&D Engineer
>> 21 Corporate Drive
>> Clifton Park, NY 12065-8662
>> Phone: 518-881-4909<tel:518-881-4909>
>>
>> On Fri, Mar 25, 2016 at 4:27 PM, Faiz Abidi <fabidi89 at vt.edu<mailto:
>> fabidi89 at vt.edu>> wrote:
>> I do enable --stereo on the client side when connecting to the server,
>> but when I give --stereo-type="Crystal Eyes", I get OpenGL errors in
>> vtkOpenGLCamera.cxx. I don't get that when I don't specify the stereo type.
>> I *think* that's because "Crystal Eyes" ain't supported by the projectors
>> we have here (not sure).
>>
>> Yes, I checked the stereo type in the properties panel. It sets it to
>> Anaglyph, and Server Stereo Type = Same as Client.
>>
>> On Fri, Mar 25, 2016 at 4:07 PM, David E DeMarle <
>> dave.demarle at kitware.com<mailto:dave.demarle at kitware.com>> wrote:
>>
>> Have you started the client that connects to the pvserver with --stereo
>> and verified the stereo type for client and server jobs the view section of
>> the properties panel?
>>
>> On Mar 25, 2016 3:43 PM, "Faiz Abidi" <fabidi89 at vt.edu<mailto:
>> fabidi89 at vt.edu>> wrote:
>> Hi guys,
>>
>> I have setup Paraview5 in a CAVE environment at Virginia Tech. I got mono
>> to work but I am stuck with Stereo rendering.
>>
>> Below is my stereo cave.pvx file.
>>
>> <?xml version="1.0" ?>
>> <pvx>
>> <Process Type="client" />
>> <Process Type="server">
>> <!-- Tiled wall in Kitware -->
>> <EyeSeparation Value="0.065"/>
>> <Machine Name="CTL"
>> Environment="DISPLAY=:0.4"
>> Geometry="2560x1600+0+0"
>> FullScreen="1"
>> ShowBorders="0"
>> LowerLeft="-1 -1 -1"
>> LowerRight="1 -1 -1"
>> UpperRight="1 1 -1"/>
>> <Machine Name="CTR"
>> Environment="DISPLAY=:0.5"
>> Geometry="2560x1600+0+0"
>> FullScreen="1"
>> ShowBorders="0"
>> LowerLeft="-1 -1 1"
>> LowerRight="1 -1 -1"
>> UpperRight="1 1 -1"/>
>> <Machine Name="CBL"
>> Environment="DISPLAY=:0.6"
>> Geometry="2560x1600+0+0"
>> FullScreen="1"
>> ShowBorders="0"
>> LowerLeft="-1 -1 -1"
>> LowerRight="1 -1 -1"
>> UpperRight="1 1 -1"/>
>> <Machine Name="CBR"
>> Environment="DISPLAY=:0.7"
>> Geometry="2560x1600+0+0"
>> FullScreen="1"
>> ShowBorders="0"
>> LowerLeft="-1 -1 -1"
>> LowerRight="1 -1 -1"
>> UpperRight="1 1 -1"/>
>> </Process>
>> </pvx>
>>
>> The problem is that I don't see any distinction between the left, and the
>> right eye. I would have attached images if it helps but that may make my
>> email too big to be approved by the moderator.
>>
>> About the setup in the lab - we have 8 projectors driving this 4-sdied
>> cave, 2 projectors for each wall. The projectors do active stereo,
>> 2560x1600 resolution.
>>
>> We think the issue maybe with setting up the correct view frustum but not
>> sure. Anybody seen this issue before?
>> --
>> Faiz Abidi | Master's Student at Virginia Tech | www.faizabidi.com<
>> http://www.faizabidi.com> | +1-540-998-6636<tel:%2B1-540-998-6636>
>>
>> _______________________________________________
>> Powered by www.kitware.com<http://www.kitware.com>
>>
>> Visit other Kitware open-source projects at
>> http://www.kitware.com/opensource/opensource.html
>>
>> Please keep messages on-topic and check the ParaView Wiki at:
>> http://paraview.org/Wiki/ParaView
>>
>> Search the list archives at: http://markmail.org/search/?q=ParaView
>>
>> Follow this link to subscribe/unsubscribe:
>> http://public.kitware.com/mailman/listinfo/paraview
>>
>>
>>
>>
>> --
>> Faiz Abidi | Master's Student at Virginia Tech | www.faizabidi.com<
>> http://www.faizabidi.com> | +1-540-998-6636<tel:%2B1-540-998-6636>
>>
>>
>>
>>
>> --
>> Faiz Abidi | Master's Student at Virginia Tech | www.faizabidi.com<
>> http://www.faizabidi.com> | +1-540-998-6636<tel:%2B1-540-998-6636>
>>
>>
>>
>> --
>> Faiz Abidi | Master's Student at Virginia Tech | www.faizabidi.com<
>> http://www.faizabidi.com> | +1-540-998-6636<tel:%2B1-540-998-6636>
>>
>>
>>
>> --
>> Faiz Abidi | Master's Student at Virginia Tech | www.faizabidi.com<
>> http://www.faizabidi.com> | +1-540-998-6636<tel:%2B1-540-998-6636>
>>
>> _______________________________________________
>> Powered by www.kitware.com<http://www.kitware.com>
>>
>> Visit other Kitware open-source projects at
>> http://www.kitware.com/opensource/opensource.html
>>
>> Please keep messages on-topic and check the ParaView Wiki at:
>> http://paraview.org/Wiki/ParaView
>>
>> Search the list archives at: http://markmail.org/search/?q=ParaView
>>
>> Follow this link to subscribe/unsubscribe:
>> http://public.kitware.com/mailman/listinfo/paraview
>>
>>
>>
>>
>> --
>> | Aashish Chaudhary
>> | Technical Leader
>> | Kitware Inc.
>> | http://www.kitware.com/company/team/chaudhary.html
>>
>>
>>
>> --
>> Faiz Abidi | Master's Student at Virginia Tech | www.faizabidi.com<
>> http://www.faizabidi.com> | +1-540-998-6636
>>
>
>
>
> --
> Faiz Abidi | Master's Student at Virginia Tech | www.faizabidi.com |
> +1-540-998-6636
>
--
*| Aashish Chaudhary | Technical Leader | Kitware Inc. *
*| http://www.kitware.com/company/team/chaudhary.html
<http://www.kitware.com/company/team/chaudhary.html>*
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://public.kitware.com/pipermail/paraview/attachments/20160330/f19123c7/attachment.html>
More information about the ParaView
mailing list