> All of these involve external monitors as far as I can tell

This happens on the native displays of MacBooks and iMacs, too. Try any of the 'looks larger'/'looks smaller' settings and it'll show up.

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crazygringo an hour ago | parent [-]

I've repeatedly explained that's not the case. Not on any Mac I've ever owned, and I already explained I thoroughly investigated my current M4 MBA. It's not showing.

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delta_p_delta_x an hour ago | parent [-]

That just means you can't perceive it. Sorry, but raster scaling is how Apple's algorithm works, and just because you can't see it doesn't mean it is not the case.

For the record, this isn't just visual. Rasterising to a framebuffer that is considerably larger than the physical resolution and then scaling produces a tangible effect on battery life. Not that it matters much with the impressive efficiency of the M-series SoCs, but it is there nonetheless.

	▲	crazygringo an hour ago \| parent [-]
		I work a lot with Photoshop. I've studied digital signal processing. Believe me, I will perceive ringing when it's there. You seem to be fundamentally misunderstanding. Yes, raster scaling is how it works. I haven't disputed that anywhere. I'm saying the ringing artifact specifically that you're complaining about is not happening on my setup, nor does it seem to be widespread. You were complaining about the specific Lanczos algorithm due to its noticeable ringing, I'm saying that therefore doesn't seem to be the algorithm being used on mine, nor is there any documentation that's the algorithm Apple uses. Your criticism seems to be based on partially wrong information, even if something like it seems to happen on certain external displays -- whatever it is, it's not a universal problem. If you somehow missed my other comment, please read it: https://news.ycombinator.com/item?id=46801536