Mixxx

flickering waveforms with Qt5 and fractional HiDPI scaling

Bug #1762092 reported by Be
12
This bug affects 2 people
Affects Status Importance Assigned to Milestone
Mixxx
New
Medium
Unassigned

Bug Description

Using QT_SCREEN_SCALE_FACTORS to scale Mixxx's GUI with Qt5 for my 3840 x 2160 display on GNU/Linux (with Wayland) works well for integer scale factors (2.0 and 3.0), but with fractional scaling like my preferred 2.5 scaling, there is subtle flickering in the waveforms with the RGB GL renderer.

Be (be.ing)
Changed in mixxx:
milestone: none → 2.2.0
importance: Undecided → Medium
Revision history for this message
Be (be.ing) wrote :

Qt documentation says:
Note: Non-integer scale factors may cause significant scaling/painting artifacts.
http://doc.qt.io/qt-5/highdpi.html

Revision history for this message
Be (be.ing) wrote :

I've been using a scale factor of 3.0 since enabling Qt's automatic scaling in https://github.com/mixxxdj/mixxx/pull/1521 , so this doesn't personally affect me anymore.

Daniel Schürmann (daschuer)
Changed in mixxx:
milestone: 2.2.0 → 2.2.1
Daniel Schürmann (daschuer)
Changed in mixxx:
milestone: 2.2.1 → none
Revision history for this message
Swiftb0y (swiftb0y) wrote :

Mixxx now uses GitHub for bug tracking. This bug has been migrated to:
https://github.com/mixxxdj/mixxx/issues/9223

lock status: Metadata changes locked and limited to project staff
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