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  1. Qt
  2. QTBUG-80967

Font hinting configuration pickup is broken in 5.14.0

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Details

    • Bug
    • Resolution: Done
    • P1: Critical
    • 5.14.1, 5.15.0 Alpha
    • 5.14.0
    • GUI: Font handling
    • None
    • Last Archlinux
      freetype 2.10.1
      fontconfig 2.13.91
    • Linux/X11
    • b31852c4caa36cc564e25adbdacfa534e1dfe7c0 (qt/qtbase/5.14.1)

    Description

      After upgrading 5.13.2->5.14.0 font rendering is changed in KDE applications despite no config changes were made. I have full hinting in fontconfig (see the attached config file), but after upgrade fonts are rendering with slight/no hinting (so, system configuration is ignored). In GTK applications everything is fine and fonts are rendering as before (full hinting). Downgrade to v.5.13.2 helps.

       

      UPD: setting `QT_AUTO_SCREEN_SCALE_FACTOR` to `0` or `QT_ENABLE_HIGHDPI_SCALING` to `0` helps me to get the proper font hinting on 5.14.0. But my DPI is not high (96).

      Attachments

        1. local.conf
          0.7 kB
        2. xdpyinfo.txt
          66 kB

        Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-80914 [reg] Antialising can't be disabled when high dpi scaling is enabled

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-88225 Text looks bad when grayscale antialiasing enabled

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Reported

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-80919 [REG 5.13->5.14] regression Qt::AA_EnableHighDpiScaling

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed
          For Gerrit Dashboard: QTBUG-80967
          # Subject Branch Project Status CR V
          286420,5 Restore QHighDPIScaling::isActive() 5.13 behavior 5.14.1 qt/qtbase Status: MERGED +2 0

          Activity

            People

              sorvig Morten Sørvig
              kite Roman Kosenko
              Votes:
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              16 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

                Gerrit Reviews

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