Does metacity compositor use acceleration?

[chombee]

On Tue, 2008-04-01 at 09:25 +1100, Christopher James Halse Rogers wrote:
> On Mon, 2008-03-31 at 20:57 +0100, chombee wrote:
> > I want to use the metacity compositor but I'm finding that it's much
> > slower than with no compositor or with compiz. Something's up. I'm using
> > an Nvidia Quadro4 900 XGL, and have the nvidia driver enabled via the
> > ...
> Does that mean that you are using Xgl?  You probably don't want to be -
> nvidia's 2d acceleration isn't so terrible that you need to put an extra
> layer in there to use the 3d engine to do 2d.

Dunno if I'm using XGL. How do I tell? It doesn't appear anywhere in my
xorg.conf, and the package xserver-xgl is not installed, so I guess I'm
not using it.