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Commit 01fd54d7 authored by David Edmundson's avatar David Edmundson
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Aurorae: Add dummy window for working device pixel ratio 

Aurorae uses a QQuickWindow that receives an implicit scale through the
QPA. Unfortunately there's a known quirk with device pixel ratio not
being followed when offscreen surfaces are never shown and an
independent render control is used.

Without this QQuickRenderControl::grab ends up using a buffer the size
of the window * dpr, but with the contents rendered at 1x in the corner
along with incorrect device pixel ratio information.

This patch copies a used solution from EffectQuickView. This can be
resolved more neatly with newer Qt.

BUG: 452730
BUG: 465790
parent 38cd1fc4
Pipeline #336149 passed with stage
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