Originally Posted by krionius
I see. So I should imagine XGL as an extension like Composite? So it is an extension. That sounds better. I would do it like that just like NVidia says it will do. If I want to use it, I have to add this extension only. I will try it this weekend using gentoo's wiki page, I hope.
No, the issue is that XGL is NOT an extension like aiglx is. XGL is a whole new X server running on top of another X server capable of doing OpenGL.