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

[Ken Martin]

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.

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
> >> >
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> >> >
> >> _______________________________________________
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> >>
> >> Visit other Kitware open-source projects at
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> >>
> >> Please keep messages on-topic and check the VTK FAQ at:
> >> http://www.vtk.org/Wiki/VTK_FAQ
> >>
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> >>
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> _______________________________________________
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>
> Please keep messages on-topic and check the VTK FAQ at:
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>
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>


-- 
Ken Martin PhD
Distinguished Engineer
Kitware Inc.
28 Corporate Drive
Clifton Park NY 12065

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