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This is not about Wayland support. It is about "true" fractional scaling support via the protocol mentioned in the article, instead of apps rendering at integer scales and then the compositor scaling them down to achieve a fractional overall factor. I guess this should make fonts look better and save some resources.

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Thanks, good to see that Wayland gets some love, I guess I never had any problems with how Firefox looks, but I don't mind if it removes one layer of "abstraction".

If you didn't have fractional scaling enabled for your monitor, then you wouldn't have noticed a difference.

I do have it enabled, that's why I notice a difference between XWayland and Wayland, otherwise I don't think I would have ever searched for the environment variable.

My understanding is that downscaling basically throws away the effects of font hinting and of any type of algorithm aligning glyph edges to the pixel grid to make them look sharper.

So depending on the user's personal tastes, their vision, their monitor's DPI and the font rendering algorithms used, the difference might range from clearly perceptible to none.

At hidpi scales, you don't do font hinting or align to pixel grid. The resolution is high enough, so it is not needed to distort glyph shapes.

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