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  1. Qt
  2. QTBUG-77287

[REG 5.13.0 -> 5.13.1] Some fonts look crumbly when Text.NativeRendering is chosen

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • Icon: P1: Critical P1: Critical
    • None
    • 5.13.1
    • Quick: Other
    • Windows 10 64 bit
    • Windows

      1. Start Qt Creator.
      2. From the menu, select "Analyze" -> "QML Profiler Options" -> "Load QML Trace".
      3. Select a QML trace file, e.g. the one I attached.
        The times above the Timeline view look terribly crumbly:

        This is more obvious on a UHD screen.

      This problem did not exist in Qt Creator 4.10 beta1, which was still based on Qt 5.13.0

      The following piece of QML, as reported by antar in the comments below, seems to be a smaller example to reproduce the issue without Qt Creator:

      import QtQuick 2.12
import QtQuick.Window 2.12

Window {
  visible: true
  width: 640
  height: 480
  title: qsTr("Native Text Rendering")

  Column {
    anchors.centerIn: parent
    spacing: 10

    Repeater {
      model: 10

      Row {
        anchors.horizontalCenter: parent.horizontalCenter
        spacing: 10

        Text {
          text: "Font Size " + font.pixelSize
          font.family: "Open Sans"
          font.pixelSize: 8 + index
          renderType: Text.NativeRendering
        }
        Text {
          text: "Bold"
          font.family: "Open Sans"
          font.pixelSize: 8 + index
          font.bold: true
          renderType: Text.NativeRendering
        }
        Text {
          text: "Italic"
          font.family: "Open Sans"
          font.pixelSize: 8 + index
          font.italic: true
          renderType: Text.NativeRendering
        }
        Text {
          text: "BoldItalic"
          font.family: "Open Sans"
          font.pixelSize: 8 + index
          font.bold: true
          font.italic: true
          renderType: Text.NativeRendering
        }
      }
    }
  }
}

      The difference between 5.13.0 and 5.13.1 is apparent:

        1. qmltrace.qzt
          0.6 kB
          Robert Löhning
        2. crumbly.png
          18 kB
          Robert Löhning
        3. qtdiag.txt
          8 kB
          Robert Löhning
        4. Sans_5.13.1.PNG
          13 kB
          Antarpreet Singh Padda
        5. Sans_5.13.0.PNG
          16 kB
          Antarpreet Singh Padda
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            qt.team.quick.subscriptions Qt Quick and Widgets Team
            rlohning Robert Löhning
            Votes:
            3 Vote for this issue
            Watchers:
            8 Start watching this issue

              Created:
              Updated:

                There are no open Gerrit changes