[vtkusers] VTK/OpenGL2 application over VirtualGL/TurboVNC?

[Róbert Špir]

It was a few months ago, so probably paraview 5.1 or 5.2 with qt4.
Certainly not 5.3 with qt5. I don't know what kind of widget it was using.

On Mon, Apr 24, 2017 at 3:45 PM, Elvis Stansvik <
elvis.stansvik at orexplore.com> wrote:

> 2017-04-24 15:32 GMT+02:00 Ken Martin <ken.martin at kitware.com>:
> > I believe for Qt5 you should be using the new QVTKOpenGLWidget that was
> > recently written. From what I understand the old QVTKWidget has some
> issues
> > with Qt5. So that might be worth looking into. I believe that is what
> > ParaView uses now.
>
> Ah yes, it's on our TODO to try out the new QVTKOpenGLWidget. At the
> moment we have our own .deb packaged VTK 7.1.1, but will try out the
> new widget once we're on a version that has it.
>
> Let's hope that magically solves the problem.
>
> Robert: You mentioned ParaView running without problems. Do you know
> if that was with a version that uses Qt 4 or 5, and if 5, if it uses
> the new QVTKOpenGLWidget or not?
>
> Elvis
>
> >
> > On Mon, Apr 24, 2017 at 9:18 AM, Elvis Stansvik
> > <elvis.stansvik at orexplore.com> wrote:
> >>
> >> 2017-04-24 15:00 GMT+02:00 Ken Martin <ken.martin at kitware.com>:
> >> > And you ran it over virtualGL/TurboVNC?
> >>
> >> Yep. See attached screenshot. This was when I ran
> >>
> >>     vglrun bin/vtkRenderingOpenGL2CxxTests TestVBOPLYMapper -D
> >> ExternalData/Testing -I
> >>
> >> in a TurboVNC session from my own laptop to the server machine.
> >>
> >> Out of curiosity, since we're using Qt 5 in our application, I tried
> >> running the QVTKRenderWindowInteractor.py script, as a quick test, and
> >> it gives the same error as when running our app:
> >>
> >> ERROR: In
> >> /buildbot/vtk7-builder/build/Rendering/OpenGL2/
> vtkOpenGLRenderWindow.cxx,
> >> line 628
> >> vtkXOpenGLRenderWindow (0x25e1670): GLEW could not be initialized.
> >>
> >> So maybe the problem is related to Qt 5 + VTK somehow?
> >>
> >> In our application (C++), we use a custom QVTKWidget subclass. I'll
> >> try to make a minimal test case that uses our custom class, but
> >> QVTKRenderWindowInteractor.py exhibiting the same problem seems to
> >> suggest it might be related to Qt + VTK.
> >>
> >> I also verified that the SmartVolumeMapper example works fine, even
> >> when modified to use the vtkGPUVolumeRayCastMapper instead (which is
> >> what we're using).
> >>
> >> Elvis
> >>
> >> >
> >> > You can run it with -I added on if you want it to stay up so you can
> >> > interact with it
> >> >
> >> > vtkRenderingOpenGL2CxxTests TestVBOPLYMapper -D ExternalData\Testing
> -I
> >> >
> >> >
> >> >
> >> > On Mon, Apr 24, 2017 at 8:57 AM, Elvis Stansvik
> >> > <elvis.stansvik at orexplore.com> wrote:
> >> >>
> >> >> 2017-04-24 14:10 GMT+02:00 Ken Martin <ken.martin at kitware.com>:
> >> >> > Elvis, could you try running the following test?
> >> >> >
> >> >> > ctest -R VBOPLY -VV
> >> >> >
> >> >> > or explicitly as
> >> >> >
> >> >> > vtkRenderingOpenGL2CxxTests TestVBOPLYMapper -D
> ExternalData\Testing
> >> >> >
> >> >> > and send me the output? That test checks for OpenGL2 support and
> >> >> > prints
> >> >> > out
> >> >> > an error message if it fails to get a valid context.
> >> >>
> >> >> Everything seems fine. The output is
> >> >>
> >> >> first render time: 0.381111
> >> >> opengl version 4.5
> >> >> interactive render time: 0.0321125
> >> >> number of triangles: 871414
> >> >> triangles per second: 2.71363e+07
> >> >>
> >> >> and I could see the dragon render quickly before disappearing.
> >> >>
> >> >> I'll try to cook up a minimal example that sets up a volume rendering
> >> >> pipeline similar to what I have in our application, and try to
> >> >> reproduce the problem I get there.
> >> >>
> >> >> Elvis
> >> >>
> >> >> >
> >> >> > Thanks!
> >> >> > Ken
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> > On Mon, Apr 24, 2017 at 7:50 AM, Elvis Stansvik
> >> >> > <elvis.stansvik at orexplore.com> wrote:
> >> >> >>
> >> >> >> 2017-04-24 13:35 GMT+02:00 Andreas Buykx <A.Buykx at dianafea.com>:
> >> >> >> > We have been busy trying to get OpenGL2 to work on our linux
> >> >> >> > backend
> >> >> >> > machines using TigerVNC and we needed to build our own mesa to
> get
> >> >> >> > the
> >> >> >> > OpenGL support required by the VTK OpenGL2 layer. I'm not sure
> >> >> >> > what
> >> >> >> > version
> >> >> >> > of mesa was required, my colleague who worked on this is on
> >> >> >> > holiday.
> >> >> >> > So far
> >> >> >> > the transition to VTK OpenGL2  is in an experimental stage, we
> >> >> >> > will
> >> >> >> > probably
> >> >> >> > not roll it out until after our next release. We are very
> >> >> >> > interested
> >> >> >> > in
> >> >> >> > exchanging experiences though...
> >> >> >>
> >> >> >> Alright. My quick test server was a Thinkpad T460p laptop with
> >> >> >> NVIDIA
> >> >> >> proprietary driver, so not using Mesa. The laptop is running
> Ubuntu
> >> >> >> 16.04.
> >> >> >>
> >> >> >> I followed pretty much the instructions at
> >> >> >> https://github.com/aancel/admin/wiki/VirtualGL-on-Ubuntu to set
> it
> >> >> >> up.
> >> >> >>
> >> >> >> I'm attaching the output I get from `vglrun glxinfo` in a terminal
> >> >> >> when connected to the server. It looks good to me.
> >> >> >>
> >> >> >> The result when trying to run our VTK application is
> >> >> >>
> >> >> >> ERROR: In
> >> >> >>
> >> >> >>
> >> >> >> /buildbot/vtk7-builder/build/Rendering/OpenGL2/
> vtkOpenGLRenderWindow.cxx,
> >> >> >> line 628
> >> >> >> vtkXOpenGLRenderWindow (0x94e5e0): GLEW could not be initialized.
> >> >> >>
> >> >> >> followed by a segmentation fault.
> >> >> >>
> >> >> >> This is with VTK 7.1.1, configured with the OpenGL2 backend.
> >> >> >>
> >> >> >> I'm attaching the backtrace (I had to modify the /usr/bin/vglrun
> >> >> >> script to run gdb in order to get it).
> >> >> >>
> >> >> >> I assume I would get the same problem with a minimal VTK example,
> >> >> >> but
> >> >> >> have yet to try this.
> >> >> >>
> >> >> >> Cheers,
> >> >> >> Elvis
> >> >> >>
> >> >> >> >
> >> >> >> > Kind regards,
> >> >> >> > Andreas
> >> >> >> >
> >> >> >> >> -----Original Message-----
> >> >> >> >> From: vtkusers [mailto:vtkusers-bounces at vtk.org] On Behalf Of
> >> >> >> >> Elvis
> >> >> >> >> Stansvik
> >> >> >> >> Sent: Monday, April 24, 2017 1:12 PM
> >> >> >> >> To: Róbert Špir
> >> >> >> >> Cc: VTK Users
> >> >> >> >> Subject: Re: [vtkusers] VTK/OpenGL2 application over
> >> >> >> >> VirtualGL/TurboVNC?
> >> >> >> >>
> >> >> >> >> 2017-04-24 12:53 GMT+02:00 Róbert Špir <spir.robert at gmail.com
> >:
> >> >> >> >> > Hi Elvis,
> >> >> >> >> > I tried it without success, but paraview runs without
> problems,
> >> >> >> >> > so
> >> >> >> >> > there's got to be some way...
> >> >> >> >>
> >> >> >> >> Ah, that's an interesting piece of info.
> >> >> >> >>
> >> >> >> >> Perhaps there's some ParaView dev here who knows what might set
> >> >> >> >> ParaView apart in this context?
> >> >> >> >>
> >> >> >> >> Elvis
> >> >> >> >>
> >> >> >> >> >
> >> >> >> >> > Robert
> >> >> >> >> >
> >> >> >> >> > -----Original Message-----
> >> >> >> >> > From: vtkusers [mailto:vtkusers-bounces at vtk.org] On Behalf
> Of
> >> >> >> >> > Elvis
> >> >> >> >> > Stansvik
> >> >> >> >> > Sent: Monday, April 24, 2017 12:51 PM
> >> >> >> >> > To: VTK Users <vtkusers at vtk.org>
> >> >> >> >> > Subject: [vtkusers] VTK/OpenGL2 application over
> >> >> >> >> > VirtualGL/TurboVNC?
> >> >> >> >> >
> >> >> >> >> > Has anyone successfully run a VTK application using the
> OpenGL2
> >> >> >> >> > backend over VirtualGL/TurboVNC?
> >> >> >> >> >
> >> >> >> >> > GLEW fails to initialize when I try to run the application
> >> >> >> >> > using
> >> >> >> >> > vglrun. I'm ready to give up, since this was just a casual
> >> >> >> >> > experiment,
> >> >> >> >> > but I thought I'd ask first if anyone has it running. The
> >> >> >> >> > output
> >> >> >> >> > from
> >> >> >> >> > `vglrun glxinfo` looks good to me.
> >> >> >> >> >
> >> >> >> >> > Elvis
> >> >> >> >> > _______________________________________________
> >> >> >> >> > 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 VTK FAQ at:
> >> >> >> >> > http://www.vtk.org/Wiki/VTK_FAQ
> >> >> >> >> >
> >> >> >> >> > Search the list archives at:
> >> >> >> >> > http://markmail.org/search/?q=vtkusers
> >> >> >> >> >
> >> >> >> >> > Follow this link to subscribe/unsubscribe:
> >> >> >> >> > http://public.kitware.com/mailman/listinfo/vtkusers
> >> >> >> >> >
> >> >> >> >> _______________________________________________
> >> >> >> >> 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 VTK FAQ at:
> >> >> >> >> http://www.vtk.org/Wiki/VTK_FAQ
> >> >> >> >>
> >> >> >> >> Search the list archives at:
> >> >> >> >> http://markmail.org/search/?q=vtkusers
> >> >> >> >>
> >> >> >> >> Follow this link to subscribe/unsubscribe:
> >> >> >> >> http://public.kitware.com/mailman/listinfo/vtkusers
> >> >> >>
> >> >> >> _______________________________________________
> >> >> >> 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 VTK FAQ at:
> >> >> >> http://www.vtk.org/Wiki/VTK_FAQ
> >> >> >>
> >> >> >> Search the list archives at: http://markmail.org/search/?q=
> vtkusers
> >> >> >>
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> >> >> >>
> >> >> >
> >> >> >
> >> >> >
> >> >> > --
> >> >> > Ken Martin PhD
> >> >> > Distinguished Engineer
> >> >> > Kitware Inc.
> >> >> > 28 Corporate Drive
> >> >> > Clifton Park NY 12065
> >> >> >
> >> >> > This communication, including all attachments, contains
> confidential
> >> >> > and
> >> >> > legally privileged information, and it is intended only for the use
> >> >> > of
> >> >> > the
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> >> >> > you
> >> >> > are
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> or
> >> >> > any
> >> >> > action taken in reliance on it is prohibited and may be unlawful.
> If
> >> >> > you
> >> >> > received this communication in error please notify us immediately
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> >> >> > destroy the original message.  Thank you.
> >> >
> >> >
> >> >
> >> >
> >> > --
> >> > Ken Martin PhD
> >> > Distinguished Engineer
> >> > Kitware Inc.
> >> > 28 Corporate Drive
> >> > Clifton Park NY 12065
> >> >
> >> > This communication, including all attachments, contains confidential
> and
> >> > legally privileged information, and it is intended only for the use of
> >> > the
> >> > addressee.  Access to this email by anyone else is unauthorized. If
> you
> >> > are
> >> > not the intended recipient, any disclosure, copying, distribution or
> any
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> you
> >> > received this communication in error please notify us immediately and
> >> > destroy the original message.  Thank you.
> >
> >
> >
> >
> > --
> > Ken Martin PhD
> > Distinguished Engineer
> > Kitware Inc.
> > 28 Corporate Drive
> > Clifton Park NY 12065
> >
> > This communication, including all attachments, contains confidential and
> > legally privileged information, and it is intended only for the use of
> the
> > addressee.  Access to this email by anyone else is unauthorized. If you
> are
> > not the intended recipient, any disclosure, copying, distribution or any
> > action taken in reliance on it is prohibited and may be unlawful. If you
> > received this communication in error please notify us immediately and
> > destroy the original message.  Thank you.
> _______________________________________________
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>
> Visit other Kitware open-source projects at http://www.kitware.com/
> opensource/opensource.html
>
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