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Mail Archives: cygwin/2003/06/04/10:12:57

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Date: Wed, 04 Jun 2003 10:12:24 -0400
To: cygwin AT cygwin DOT com
From: Andre Bleau <bleau AT igb DOT umontreal DOT ca>
Subject: Re: linking cygwins glX (in libGL.a) with MS hardware opengl32
libraries
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X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id h54ECvL30451

Sorry Steve K, but you are heading toward a dead end.

The hardware accelerated openGL drivers cannot be accessed from X window, 
and there is no way we can change this. Basicalty, we cannot "teach" 
drivers writen by graphic hardware manufacturers how to draw in an X-window 
context. So you have to choose between:

1- Keep your app as is, using X window through GLX, and forget hardware 
acceleration.

2- Rewrite your app to use wgl and M$-specific functions to manage windows 
and input (this can be a substantial rewrite) and use hardware accelerated 
openGL for drawing.

3- Use some portable window management layer, like GLUT, and use hardware 
accelerated openGL for drawing.



André Bleau, Cygwin's OpenGL package maintainer.

email: bleau at igb dot umontreal dot ca
(Fight SPAM: encode your email-address)

Please address all questions and problem reports about Cygwin's OpenGL 
package to cygwin AT cygwin DOT com . 


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