Re:Measuring keyboard-to-photon latency with a light sensor
by conistonwater on Sunday May 31, 2020 @11:40AM
(#23370213)
What's going on with those two editors that the input latency is two frames on average? I would have expected it to be somewhere around 1 frame just because the editors aren't doing any extra work like auto-completion. Two whole frames sounds pretty bad.
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Re:Measuring keyboard-to-photon latency with a light sensor
by raphlinus on Sunday May 31, 2020 @11:43AM
(#23370241)
A large part of that is the extra frame of latency added by the compositor. One experiment that I'd very much like to do is try to get Windows to promote a window to using hardware overlays (this is sometimes called "DirectFlip" but the public documentation on it is very sparse) and see how much that helps.