[Bf-committers] OpenGl in windowsVista ... bad news....

[Frédéric van der Essen]

Quote from www.opengl.org :

Microsoft's current plan for OpenGL on Windows Vista is to layer OpenGL 
over Direct3D in order to use OpenGL with a composited desktop to obtain 
the Aeroglass experience. If an OpenGL ICD is run - the desktop 
compositor will switch off - significantly degrading the user 
experience. In practice this means for OpenGL under Aeroglass:

* OpenGL performance will be significantly reduced - perhaps as much as 50%
* OpenGL on Windows will be fixed at a vanilla version of OpenGL 1.4
* No extensions will be possible to expose future hardware innovations

It would be technically straightforward to provide an OpenGL ICD within 
the full Aeroglass experience without compromising the stability or the 
security of the operating system. Layering OpenGL over Direct3D is a 
policy decision more than a technical decision.

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