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  1. Qt
  2. QTBUG-108204

Text rendering problem with text scaling on Windows 11

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    • Windows

    Description

      This seems to be a Windows 11 specific problem, at least not reproducible in Windows 10.

      When High DPI scaling is enabled ( i.e. QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling)) and system's display scale ((System > Display > Scale & layout > Scale) is set to 150% or 175%,
      some of the characters of the text are not drawn.

      The below is output in Application output. 

      "QWindowsFontEngineDirectWrite::addGlyphsToPath: GetGlyphRunOutline failed (Parametro non corretto.)"

      How to reproduce
      Qtbug108204-testFontScale.zip

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-108713 Native font rendering in some cases misses letters

          • 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.
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              esabraha Eskil Abrahamsen Blomfeldt
              nagrohn Nahomi Gröhn (Inactive)
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                Created:
                Updated:
                Resolved:

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