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Details

Type: Bug
Resolution: Done
Priority: P1: Critical
Fix Version/s: 5.9.0 RC
Affects Version/s: 5.8.0, 5.10
Component/s: Quick: SceneGraph
Labels:
None
Environment:
Linux, QNX

Commits:
9921b48c83490b450241d6c172f1375ab4efb6b1

Description

The following example creates separate distance field textures for each Text element:

import QtQuick 2.0

Item {
    width: 400
    height: 400

    Text {
        font.pixelSize: 24
        text: "My Sample Text"
    }

    Text {
        font.pixelSize: 25
        text: "My Sample Text"
    }
}

Output is:

qt.scenegraph.time.glyph: distancefield: 11 glyphs prepared in 1ms, rendering=0, upload=1
qt.scenegraph.time.glyph: distancefield: 11 glyphs prepared in 0ms, rendering=0, upload=0

This appears to be due to changes to the cache key between 5.6 and 5.8 – using QRawFont directly rather than a custom QString key.