srw writes "OpenGL is the industry choice for cross platform, hardware accelerated 3D graphics, and it is also the only way you can get fast 3D graphics on your Linux desktop. It now seems Windows Vista implements OpenGL via Direct3D, seriously degrading its performance and attractiveness to developers." From the article: "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 more than a technical decision."