Details
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Bug
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Resolution: Unresolved
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P2: Important
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None
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6.9.1
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None
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Linux/X11
Description
For some fonts it seems, that the variableAxes qml property does not work, although google fonts does list them under variable axes, and google manages to make them variable. When using the code below, this shows by all Text lines being rendered with weight 400 (regular). It works correctly in Qt 6.7.3 and 6.8.2.
Broken fonts are e.g. public sans and source sans 3. Working fonts are roboto, noto sans, and dyna puff. I've written the following qml app to demonstrate the issue (full project attached):
import QtQuick import QtQuick.Controls.Material import QtQuick.Layouts Window { width: 640 height: 480 visible: true title: qsTr("Hello World") id: root property string normalFamilyPath: "https://github.com/uswds/public-sans/raw/refs/heads/develop/fonts/variable/PublicSans%5Bwght%5D.ttf" FontLoader{ id: fontLoader; source: root.normalFamilyPath; } ListModel { id: fontModel ListElement { displayName: "PublicSans"; normalFamilyPath: "https://github.com/google/fonts/raw/c53c4df931d3fd0122a30b06d13126cfaad8e014/ofl/publicsans/PublicSans%5Bwght%5D.ttf"; } ListElement { displayName: "SourceSans3"; normalFamilyPath: "https://github.com/google/fonts/raw/4591e3457ab8be6d70167aa6818922b91e78ab2d/ofl/sourcesans3/SourceSans3%5Bwght%5D.ttf"; } ListElement { displayName: "Roboto"; normalFamilyPath: "https://github.com/google/fonts/raw/980ecc3ef7368a861abfb636a42f0952cada6720/ofl/roboto/Roboto%5Bwdth,wght%5D.ttf"; } ListElement { displayName: "Noto Sans"; normalFamilyPath: "https://github.com/google/fonts/raw/b8a5c309307ae1f13ae03724fe46454ec63fad63/ofl/notosans/NotoSans%5Bwdth,wght%5D.ttf"; } ListElement { displayName: "DynaPuff + PublicSans"; normalFamilyPath: "https://github.com/google/fonts/raw/19cdcec59967f4aa6defb86bd0550dff1ac43abb/ofl/dynapuff/DynaPuff%5Bwdth,wght%5D.ttf"; } } ColumnLayout { anchors.fill: parent ComboBox { Layout.fillWidth: true model: fontModel textRole: "displayName" onCurrentIndexChanged: { const item = fontModel.get(currentIndex) console.log("Selected:", item.displayName) root.normalFamilyPath = item.normalFamilyPath } } Text { text: "Cats don't fly (weight 900)." font { family: fontLoader.name variableAxes: { "wght": 900 } pixelSize: 32 } } Text { text: "Cats don't fly (weight 700)." font { family: fontLoader.name variableAxes: { "wght": 700 } pixelSize: 32 } } Text { text: "Cats don't fly (weight 400)." font { family: fontLoader.name variableAxes: { "wght": 400 } pixelSize: 32 } } Text { text: "Cats don't fly (weight 100)." font { family: fontLoader.name variableAxes: { "wght": 100 } pixelSize: 32 } } } }