I wasted a couple of hours unsuccessfully trying to implement this for bug 573889 before giving up. This is miles away from the fennec 2.0 critical path so off my TODO list; hopefully someone else can grab this in the interim. The current TextureImageGLX implementation is very slow.

This will likely end up blocking bug 580405, but I'll wait to set the dep until we know how the simpleton ThebesLayerOGL+BasicTextureImage compares with BasicThebesLayer.

Hacked on this as a Friday-evening digression, but it's maxed out my ability and time. I see a lot of rendering glitches with this; incomplete and/or incorrect updates, parts of the page disappearing/reappearing, and random old X pixels on init or scrolling. Hopefully someone else can use this patch as a starter kit.

This was added in bug 640082.