Re: [PyOpenGL-Users] Setting Up on New Machine

[Mike C. F. <mcf...@vr...>]

On 12-02-02 10:45 AM, Ian Mallett wrote:
> Hi,
>
> I just got a new laptop (64 bit, Py2.6), and am going through the 
> cursory install-everything phase.
>
> I'm having trouble with PyOpenGL.  Standard OpenGL calls appear to be 
> undefined.  The following minimal example:
>
>     from OpenGL.GL import *
>     from OpenGL.GLU import *
>     from OpenGL.GLUT import *
>     import pygame
>     from pygame.locals import *
>     pygame.init()
>
>     Screen = (640,480)
>     pygame.display.set_mode(Screen,OPENGL|DOUBLEBUF)
>
>     glEnable(GL_LIGHTING)
>
>
> . . . produces (after creating a window, and, therefore hopefully, a 
> context):
>
>     Traceback (most recent call last):
>       File "C:\Users\Ian Mallett\Desktop\t.py", line 11, in <module>
>         glEnable(GL_LIGHTING)
>       File
>     "C:\dev\Python26\lib\site-packages\pyopengl-3.0.2a3-py2.6.egg\OpenGL\platform\baseplatform.py",
>     line 377, in __call__
>         self.__name__, self.__name__,
>     NullFunctionError: Attempt to call an undefined function glEnable,
>     check for bool(glEnable) before calling
>
> Help?  Thanks,
> Ian
That sounds like a failure in the platform module, that is, either it 
doesn't find the DLL, or finds the wrong DLL.  The most likely cause 
there is the "64-bit" ness of the machine, as I don't have a 64-bit 
Windows machine on which to test/work... actually, scratch that, just 
realized that my server *did* come with a 64-bit Windows... just need to 
give up the server for an afternoon.  My guess is that opengl32, glut32, 
glu32 are renamed to something like opengl64 or the like.  Guess I 
should fire up Win64 and find out.  OpenGL_accelerate is definitely 
going to be broken/MIA, as it requires compilation and I haven't done 
that for Win64 before.

You could probably put a pdb call in platform/win32.py and figure it out 
before I get there (I'm going to have to pick up my son in a few 
minutes), but if not I'll try to get to it this afternoon.

Thanks,
Mike