[PyOpenGL-Devel] [ pyopengl-Bugs-1921652 ] call to glFogCoordfEXT fails on Windows

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Bugs item #1921652, was opened at 2008-03-20 15:19
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Category: GL
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Christopher Unkel (cunkel)
Assigned to: Nobody/Anonymous (nobody)
Summary: call to glFogCoordfEXT fails on Windows

Initial Comment:
PyOpenGL-3.0.0.b1-py2.5egg on Python 2.5.2 on win32

When running NeHe lesson 4.1:

Traceback (most recent call last):
  File "c:\python25\lib\site-packages\PyOpenGL-3.0.0b1-py2.5.egg\OpenGL\GLUT\special.py", line 110, in safeCall
    return function( *args, **named )
  File "lesson41.py", line 226, in DrawGLScene
    glFogCoordfEXT( 1.0);       glTexCoord2f(0.0, 0.0); glVertex3f(-2.5,-2.5,-15.0);
  File "c:\python25\lib\site-packages\PyOpenGL-3.0.0b1-py2.5.egg\OpenGL\platform\baseplatform.py", line 252, in __call__
    if self.extension and self.load():
  File "c:\python25\lib\site-packages\PyOpenGL-3.0.0b1-py2.5.egg\OpenGL\platform\baseplatform.py", line 234, in load
    func = functionTypeFor( self.DLL )(
NameError: global name 'functionTypeFor' is not defined
GLUT callback forcing low-level exit on error: global name 'functionTypeFor' is not defined

I see no evidence that a global functionTypeFor should be in scope.  The following patch resolves the problem:

*** PyOpenGL-3.0.0b1-py2.5.egg/OpenGL/platform/baseplatform.py  Thu Mar 20 14:56:50 2008
--- PyOpenGL-3.0.0b1-py2.5.not/OpenGL/platform/baseplatform.py  Thu Mar 20 13:15:43 2008
***************
*** 231,237 ****
                from OpenGL import platform
                pointer = platform.PLATFORM.getExtensionProcedure( self.__name__ )
                if pointer:
!                       func = functionTypeFor( self.DLL )(
                                self.restype,
                                *self.argtypes
                        )(
--- 231,237 ----
                from OpenGL import platform
                pointer = platform.PLATFORM.getExtensionProcedure( self.__name__ )
                if pointer:
!                       func = platform.PLATFORM.functionTypeFor( self.DLL )(
                                self.restype,
                                *self.argtypes
                        )(

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