Re: [PyOpenGL-Users] gluBuild3DMipmaps

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

Andrew Wilson wrote:
> Hello,
>   I found a newer glu version compiled for win32.  Unfortunately winxp 
> has a file protection scheme that won't allow me to overwrite 
> glu32.dll with the newer version.  Is there a way to force pyopengl to 
> use different dll's?
There is, though it feels a bit hacky and has AFAIK never been tested.  
Here's an example where I make the GLU DLL a completely unrelated 
library (so there will be no GLU functionality at all):

 >>> import ctypes
 >>> glu = ctypes.CDLL( '/usr/lib/libFLAC.so' )
 >>> platform.GLU = glu
 >>> from OpenGL.GLU import *
 >>> gluGetString
<OpenGL.platform.gluGetString object at 0x2aaaabc82f10>
 >>> gluGetString( GLU_VERSION )
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File 
"/var/pylive/src/OpenGL-dev/OpenGL-ctypes/OpenGL/platform/__init__.py", 
line 186, in __call__
    self.__name__, self.__name__,
OpenGL.error.NullFunctionError: Attempt to call an undefined function 
gluGetString, check for bool(gluGetString) before calling

(You will need to use WinDLL, not CDLL for win32).  You may want to use 
OpenGL.platform.ctypesloader.loadLibrary( ctypes.windll, 
path_to_your_library ) instead of the bald ctypes operations, as older 
ctypes versions should be supported with that function.

Good luck,
Mike

>
> On 2/8/07, *Andrew Wilson* <and...@al... 
> <mailto:and...@al...>> wrote:
>
>     Hey Mike,
>       You hit the nail on the head, my version of GLU is '1.2.2.0
>     <http://1.2.2.0> Microsoft Corporation'. This may be a silly
>     question, is there any way to update glu to 1.3 on win32?
>       Thanks
>       Andrew
>

-- 
________________________________________________
  Mike C. Fletcher
  Designer, VR Plumber, Coder
  http://www.vrplumber.com
  http://blog.vrplumber.com