> For an opaque window, yes, I see slightly faster compositing. For a
> translucent window I can't tell the difference. For a translucent
> image over a translucent image, thousands is clearly slower.

Well, I've found something that's clearly faster in thousands than millions,
but it's not something I use all that often: video. The difference there is
astounding. And that makes sense, because the frames aren't being pre-rendered
do it's not re-dithering them when it does compositing.

Also, I've been doing some more digging, and it looks like the PCI bus on the
7x00 is a problem. I've seen figures as low as 17 MB/s quoted for PCI bus
benchmarks. :-P


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