Re: [PyOpenGL-Users] glGenVertexArrays producing 'invalid enumerant' error.

[Gordon W. <go...@to...>]

Enabling error checking did not change that particular failure.

Are you suggesting that that machine may not have glBindVertexArray? That's
a core function and the driver reports itself as 3.3.0 via glxinfo and lets
me acquire a core 3.3 context via pyopengl glut.

G

On Thu, Nov 10, 2011 at 1:44 PM, Mike C. Fletcher <vrp...@gm...>wrote:

> On 11-11-08 10:38 PM, Gordon Wrigley wrote:
> > On an impulse I tried broke.py on another linux machine I have access
> > to that has Nvidia drivers on it, the result was the same but the
> > details differed. Particularly problems 2, 3 & 4 were replaced by this:
> >
> > Traceback (most recent call last):
> >   File "broke.py", line 145, in <module>
> >     main(sys.argv)
> >   File "broke.py", line 115, in main
> >     glBindVertexArray(vao)
> >   File
> > "/usr/local/lib/python2.7/dist-packages/OpenGL/platform/baseplatform.py",
> > line 371, in __call__
> >     if self.load():
> >   File
> > "/usr/local/lib/python2.7/dist-packages/OpenGL/platform/baseplatform.py",
> > line 351, in load
> >     if not platform.PLATFORM.checkExtension( self.extension ):
> >   File
> > "/usr/local/lib/python2.7/dist-packages/OpenGL/platform/baseplatform.py",
> > line 246, in checkExtension
> >     result = extensions.hasGLExtension( name )
> >   File "/usr/local/lib/python2.7/dist-packages/OpenGL/extensions.py",
> > line 54, in hasGLExtension
> >     AVAILABLE_GL_EXTENSIONS[:] = glGetString( GL_EXTENSIONS ).split()
> > AttributeError: 'NoneType' object has no attribute 'split'
> Hmm, without error checking that will return None if the entry point is
> not provided by the context (i.e. a core/forward-compatible-only
> context).  That definitely will break.
>
> Thanks,
> Mike
>
> --
> ________________________________________________
>  Mike C. Fletcher
>  Designer, VR Plumber, Coder
>  http://www.vrplumber.com
>  http://blog.vrplumber.com
>
>