Was it completely broken using TTM? Just wondering why you didn't try that.
Also, I thought FBO and pretty much everything new that was in this code was only enabled if you were using the new memory manager. Are you sure it was enabled for these tests?
Of course, the larger point you made here that the driver still has a long way to go is absolutely correct. It's exciting to finally see some progress, though. Hopefully 3D r6xx/r7xx won't be far behind.
Yep, this link seems to confirm it - you're not enabling FBO for these tests. http://airlied.livejournal.com/66706.html
It also seems like they weren't aware of these serious regressions - maybe a non-mobility card would fare better?