[Paraview] Mono and Stereo Rendering in the CAVE
Faiz Abidi
fabidi89 at vt.edu
Sat Mar 26 01:19:56 EDT 2016
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> 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> 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> 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> 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> 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
>>>>>
>>>>> On Fri, Mar 25, 2016 at 4:27 PM, Faiz Abidi <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> 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> 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
>>>>>>>> | +1-540-998-6636
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> Powered by 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 |
>>>>>> +1-540-998-6636
>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Faiz Abidi | Master's Student at Virginia Tech | www.faizabidi.com |
>>>> +1-540-998-6636
>>>>
>>>
>>>
>>>
>>> --
>>> Faiz Abidi | Master's Student at Virginia Tech | www.faizabidi.com |
>>> +1-540-998-6636
>>>
>>
>>
>>
>> --
>> Faiz Abidi | Master's Student at Virginia Tech | www.faizabidi.com |
>> +1-540-998-6636
>>
>> _______________________________________________
>> Powered by 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
> <http://www.kitware.com/company/team/chaudhary.html>*
>
--
Faiz Abidi | Master's Student at Virginia Tech | www.faizabidi.com |
+1-540-998-6636
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