[vtkusers] Reply : Why could vtkgl::GenBuffers == NULL ?

[Oliver Kania]

Sadly, I am using VS 2008 on Windows and direct rendering.
Does someone know any other possible reason for vtkgl::GenBuffers == NULL ?

Regards,
Oliver

2010/5/27 Francois Bertel <francois.bertel at kitware.com>

> Are you using indirect rendering mode on Linux? If so, try VTK git, it
> should be fixed (a workaround for a nVidia bug in indirect rendering
> mode on Linux)
>
> On Thu, May 27, 2010 at 6:51 AM, Oliver Kania
> <kania.oliver at googlemail.com> wrote:
> > In a previous post, I said that my App crashes with VTK 5.6 but not 5.2
> > because GenBuffers == NULL during Interactor::Render.
> > I found a post in the archive that says GenBuffers is NULL if the OpenGl
> > Version is < 1.5 and
> > a certain extension is not loaded.
> > How do I query the OpenGL version which is used by VTK and how do I
> change
> > it ?
> > However, my driver supports GL > 2.0, and I guess VTK does load the best
> > possible version.
> > What other reason could there be for GenBuffers == NULL ?
> > Is it possible to avoid usage of this function by VTK ?
> >
> > Best Regards, Oliver
> >
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>
> --
> François Bertel, PhD  | Kitware Inc. Suite 204
> 1 (518) 371 3971 x113 | 28 Corporate Drive
>                      | Clifton Park NY 12065, USA
> _______________________________________________
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>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
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