[Wayland-bugs] [Bug 96982] xf86-input-libinput: Rough and lopsided mouse movement in games/apps that reposition mouse

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96982

--- Comment #11 from Danni H <dannihfoss at fastmail.fm> ---
Hmm, what sort of odd and inconsistent behavior? Do you have an example? My
understanding is that moving the mouse 5.5 pixels from 100 to 105.5 would
result in mouse pointer integral at 105 with 0.5 leftover, with the mouse
moving another 0.5 the next frame to bring it to 106. Is there a corner case
I'm not aware of?

If this isn't a satisfactory workaround, I think at least we should add 0.5 to
the destination coordinates when warping the pointer - this would at least
center the mouse pointer in sub-pixel space around the target pixel, such that
it would take an equal amount of movement in any direction to move to the next
pixel. It wouldn't be as smooth as evdev but it would at least be less lopsided
and it wouldn't feel quite so much like pushing a bus up a hill.

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