[vtkusers] OpenGL fails to initialize for Windows 7, VTK 7.0

Matthias Blaicher matthias at blaicher.com
Mon Feb 22 14:33:38 EST 2016

Hi David,

I guess you are right, it looks like this is the issue. According to
OpenGL Extensions Viewer, the card exposes OpenGL 4.

If I understood it correctly, the problem seems to be that gpu_shader4
is not exposed in the 2.1 context. And 3.2 is tested but fails (have to
check that for my card).

Is there any patch, which would try a 3.1 context too? I've seen some
commits in master (e.g. ca65662fa "Merge topic
'try_more_recent_opengl_add_getversion'"). I'll give the master branch a
spin and report back.



On 02/22/2016 08:21 PM, David Gobbi wrote:
> Might be a compatibility issue, see the following discussion:
> http://public.kitware.com/pipermail/vtk-developers/2016-February/033168.html
>   - David
> On Mon, Feb 22, 2016 at 11:30 AM, Matthias Blaicher
> <matthias at blaicher.com <mailto:matthias at blaicher.com>> wrote:
>     Hi all,
>     I've build VTK 7.0 for Python 3.5 and non-visual stuff works great.
>     However, as soon as I want to open an OpenGL context, I get errors. This
>     is on an Intel Graphics card. I do also have VTK 6.3 by Anaconda on
>     Python 2 an there everything works great.
>     Some screenshots are attached. The first error message is
>      > FvtkWin32OpenGLRenderWindow: failed to get valid pixel format.
>     Does anybody have an idea what I'm doing wrong?
>     Best,
>     Matthias

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