Deterioration of display quality with fractional interface scaling

[Fifis]

Good afternoon!

I have been using this version for quite a while, and I have been extremely happy with the interface... before I had to switch to a laptop that has a high DPI but a small screen size, so it uses interface scaling (‘Global scale’ on KDE 6 on my actual machine). How it produces smaller images for display... but upscales them via the nearest-neighbour interpolation.

In the examples below, the screen resolution is always 2560x1440, and the scaling is 100%, 125%, and 150%. The images have ben alighed to roughly match in the screenshots.

100%, all is fine, 1:1, crisp image:

125% – the image must have been crisp before NN rescaling:

150% – same, but at a different scale:

A close-up comparison between 100%, 125%, 150% image rendering quality:

Is it possible to have an option to ignore global scaling since the image is not supposed to be a part of the interface, but would rather rely on the actual physical pixels of the screen – as many of them as would be left after the interface finishes drawing?

Yours sincerely,
Andreï.