Why can't we have composite with overlay?
Why isn't it allowed to have the X composite extension turned on and overlay support in the nvidia driver?
Doesn't the overlay hardware just read the framebuffer and put the video where it sees a certain keycolour? Admittedly with composite and transparency you might get some funny effects over the video sometimes but I can't see any technical reason why it wouldn't work. And it would allow perfect vsync in a composite environment (which isn't currently possible at all).
Am I missing something here?