OpenGL in Xine not double-buffered

[TechMage89]

When I run Xine with the OpenGL renderer, even when I select double buffering, I see awful tearing in the output. This happens regardless of the output method I choose (fragment shader or texture.) Is this a bug in the r500 mesa?

My machine has an x1600xt.

[NaterGator]

What window manager are you using?

[TechMage89]

Just metacity. I haven't had the time to muck with compiz