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  1. Qt
  2. QTBUG-88225

Text looks bad when grayscale antialiasing enabled

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Details

    • Bug
    • Resolution: Unresolved
    • P2: Important
    • None
    • 5.15.1
    • GUI: Text handling
    • None
    • Windows
    • Windows

    Description

      Windows 10 (Version 2004, Build 19041.572)

      Scaling 100%

      "Smooth edges of screen fonts" - enabled

      "Turn on ClearType" - disabled

      (this corresponds to PixelStructure = 0 in the registry)

      Telegram (GDI mode - Freetype looks good)

      Picard (started in 2.5.1 - according to the change history they updated to Qt 5.15.1)

      OBS Studio

      Virtualbox

      In the case of Telegram I tried adding

      setHintingPreference(QFont::PreferVerticalHinting)

      ..and that seemed to fix it. Applications shouldn't have to do this though - Qt could detect grayscale antialiasing on Windows and default to the appropriate hinting automatically.

       

       

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-80967 Font hinting configuration pickup is broken in 5.14.0

          • 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
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              esabraha Eskil Abrahamsen Blomfeldt
              gordy Gordon Cowie
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              Dates

                Created:
                Updated:

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