Fractional devicePixelRatio makes 1/DPR pens anti-alias and breaks pixel-exact Qt render tests

Domain: frontend · Evidence E1 — Maintainer reviewed

qtpyside6highdpidevicepixelratioantialiasingpixel-testing

Summary

On a fractional devicePixelRatio the exact pixel assertions of a Qt/PySide render test fail, while the same suite passes on the offscreen platform (DPR=1). A cr…

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