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At a certain point, the DPI is just too high. I like the effort they went to with 4/5, so you could still get pixel perfect rendering.
Once the DPI is high enough, you don't need (or *want*!) pixel perfect rendering. Bitmap displays are a pointless fight against Nyquist.
I yearn for the day we can ditch all this hacky pixel grid nonsense and just embrace mathematically ideal sinc resizing like we do for audio
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