[CountSessine]

It would be interesting to know how the cost of allocating a new fbo would compare to the cost of zeroing it out. My guess is that the cost of getting into the kernel to do the allocation in the first place would dominate, but by how much would be something neat to measure.

[chris_wot]

If it's costing a lot of time to clear a buffer, doesn't that tend to indicate that's something the video card manufacturer should design an enhancement or fix for?