Comment 173 for bug 182038

Patch to switch to turn off offscreen pixmaps when using XAA. This is the exact patch used by Fedora.

The XAAOffscreenPixmaps feature seems to be an early optimization trick that never really worked right; often it resulted in *worse* performance than having no optimization at all. So most distros turn it off, using a patch like this one. As extensively discussed above, the trick could also introduce some severe visual glitches, and these are resolved by switching the option off.

This patch is uploaded to the queue for release team approval.