[vtkusers] Offscreen Rendering & Linux

[Aashish Chaudhary]

Mark,

I believe that as of now if you want to use OpenGL driver and not Mesa it
requires opening an windows or else you have to use Mesa (like you did).
There is no workaround for the former case.

On Thu, Sep 23, 2010 at 6:48 AM, endlosschleife1 <
endlosschleife1 at googlemail.com> wrote:

> Hello,
>
> has anybody some experience with doing offscreen rendering under Linux with
> graphics acceleration support and give me some hints on how to get this to
> work?
>
> I'm using a vtkOpenGLRenderWindow and set OffScreenRendering to on. With
> that it does really not render into a window, but VTK still opens an X
> Window (apparently it needs its handle). So for instance when I try to start
> a VTK based app remotely via SSH I get the following error message:
>
> # An unexpected error has been detected by Java Runtime Environment:
> #
> #  SIGSEGV (0xb) at pc=0xb2b5b4f5, pid=16472, tid=3044047776
> #
> # Java VM: Java HotSpot(TM) Client VM (1.6.0-b105 mixed mode, sharing)
> # Problematic frame:
> # C  [libvtkRenderingJava.so.5.6.0+0x66c4f5]
> _ZN22vtkXOpenGLRenderWindow13CreateAWindowEv+0x37b
> #
> # An error report file with more information is saved as
> hs_err_pid16472.log
> #
> # If you would like to submit a bug report, please visit:
> #   http://java.sun.com/webapps/bugreport/crash.jsp
> #
>
> Is there any way around the need for VTK to open an X window? Basically I
> would like to know if that problem is even fixable or if I need to look for
> other workarounds.
>
> When I build VTK with MESA enabled it works, but the performance without
> accelaration is unacceptable.
>
> Thanks,
> Mark
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-- 
| Aashish Chaudhary
| R&D Engineer
| Kitware Inc.
| www.kitware.com
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