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Re: OpenGL Extensions
- To: cygwin at sources dot redhat dot com
- Subject: Re: OpenGL Extensions
- From: Andre Bleau <bleau at igb dot umontreal dot ca>
- Date: Fri, 02 Feb 2001 14:33:11 -0500
>I want to use following extensions:
>glLockArraysEXT( GLint first, GLsizei count );
>glUnlockArraysEXT( void );
>
>My card supports EXT_compiled_vertex_arrays. I tried to follow a GL extension
>manual
>(http://reality.sgi.com/blythe/sig99/advanced99/notes/node396.html), but
>it didn't work. What to do?
>
Cygwin's OpenGL implementation is just a repackaging of Micro$oft
implemention, which do not support extensions. The html doc you mentionned
suggests a sensible way to get around the problem, but I didn't try it
myself, having no card specific extensions to load.
One problem with the suggested code might be that it is written for Visual
C++, which has _WIN32 defined. The last version of gcc for Cygwin
(2.92.2-7) has _WIN32 undefined by default; try compiling with -mwin32. If
you still encounter problems, please report to this list the complete error
messages you receive, instead of just saying "it didn't work".
Regards,
André Bleau, Cygwin's OpenGL maintainer.
André Bleau, ing., associé de recherche
bleau@igb.umontreal.ca
Laboratoire de recherche en Imagerie et en Orthopédie
École de Technologie Supérieure
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