[Wayland-bugs] [Bug 79056] New: RFE: pointer acceleration needs to take resolution into account

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=79056

          Priority: medium
            Bug ID: 79056
          Assignee: wayland-bugs at lists.freedesktop.org
           Summary: RFE: pointer acceleration needs to take resolution
                    into account
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: peter.hutterer at who-t.net
          Hardware: Other
            Status: ASSIGNED
           Version: unspecified
         Component: libinput
           Product: Wayland

Devices with uneven horizontal/vertical resolution are accelerated unevenly.
e.g. on the x220t, the touchpad is almost twice as wide as high. The resolution
reflects this:

    Event code 0 (ABS_X)
      Value   2618
      Min     1472
      Max     5472
      Resolution      75
    Event code 1 (ABS_Y)
      Value   2482
      Min     1408
      Max     4448
      Resolution     129

the acceleration code needs to take this resolution into account to pre-adjust
the coordinates. The goal is that a circle on the device reflects a circle on
the screen.

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