[Interest] MacOS Antialiasing disabled after Qt-5.13.0

[Patrick Stinson]

It seems as though antialiasing has become disabled on macOS after upgrading to Qt-5.13.0 even when setting Qt::AA_EnableHighDpiScaling on QApplication prior to instantiation.

Pixmaps are rendered with low dpi and QGraphicsView antialiasing quality has drastically reduced on High-DPI displays and disappeared all together on Low-DPI displays. First screenshot is from low-dpi display and second is from high-dpi (Apple retina) display. Pixmaps should be very sharp, QGraphicsView paths should be high-quality antialiased.

Thanks!
-Patrick




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