Bug 448111

Summary: Map is unreadable when it is moved with the mouse pointer
Product: [Applications] marble Reporter: Laurent Bonnaud <L.Bonnaud>
Component: generalAssignee: marble-bugs
Status: RESOLVED INTENTIONAL    
Severity: normal CC: rahn
Priority: NOR    
Version: 22.12.3   
Target Milestone: ---   
Platform: Flatpak   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: Degraded map
Normal quality map

Description Laurent Bonnaud 2022-01-08 11:57:28 UTC
SUMMARY

Moving the map with the mouse pointer makes the map temporarily unreadable

STEPS TO REPRODUCE
1. Move the map with the mouse pointer and do not release the mouse button
2. Map is strongly degraded
3. Release the mouse button and see how the map suddenly improves

OBSERVED RESULT

Quality degradation during movement

EXPECTED RESULT

Same map quality during movement as when map is static

SOFTWARE/OS VERSIONS

$ flatpak info org.kde.marble//stable

Marble - Virtual Globe

          ID: org.kde.marble
         Ref: app/org.kde.marble/x86_64/stable
        Arch: x86_64
      Branch: stable
     Version: 21.12.1
     License: LGPL-2.1-or-later
      Origin: flathub
  Collection: org.flathub.Stable
Installation: system
   Installed: 237.3 MB
     Runtime: org.kde.Platform/x86_64/5.15-21.08
         Sdk: org.kde.Sdk/x86_64/5.15-21.08

      Commit: e5df76dd61ee708f4b8b7a838331fa6dcba0fa99d0ca635057fa12710d3ed2d1
      Parent: 562104dc0f72eeeda48d4fc3216436bb77dbde998076e4cfbd1881a0b11e52c9
     Subject: Update to 21.12.1 (0a4b16e6)
        Date: 2022-01-06 20:08:40 +0000
Comment 1 Laurent Bonnaud 2022-01-08 11:58:29 UTC
Created attachment 145217 [details]
Degraded map

Note how the "Paris" label is not degraded
Comment 2 Laurent Bonnaud 2022-01-08 11:59:42 UTC
Created attachment 145218 [details]
Normal quality map

Note how the "Paris" label is now perfectly readable
Comment 3 Laurent Bonnaud 2022-01-08 12:00:26 UTC
(In reply to Laurent Bonnaud from comment #1)
> Created attachment 145217 [details]
> Degraded map
> 
> Note how the "Paris" label is not degraded

Note how the "Paris" label is *unreadable*
Comment 4 Torsten Rahn 2023-04-04 12:35:48 UTC
This is not a bug, but a feature (and the older Marble versions defaulted for LowQuality for performance reasons):

Go to "Settings" -> "Configure Marble ..." and on the "View" tab change the "Map Quality" inside the "During animations" ComboBox to "High Quality".
Comment 5 Torsten Rahn 2023-04-04 12:41:36 UTC
Actually "LowQuality" seems to be still the default during animations in the current Marble master. I will likely change this to "NormalQuality" for the next release.
Comment 6 Laurent Bonnaud 2023-04-04 18:45:46 UTC
Great!
Thanks for the info, and for the new default setting!