> which renders a 2880x1800 frame and does a non-integer scale down to the panel's native resolution, trading sharpness for extra space.
This isn't how it really works. It doesn't render 2880x1800 frame and scale down, it will just render at the resolution given for the size of the widgets desired. Any modern GPU can do that, the only time down scaling is needed is if you have a higher resolution bitmap that you want rendered at a lower resolution (or you can scale up, anyways, modern applications should not be rendering fixed sized bitmaps to ever need to do that).
Edit: never mind, that is how it actually works. I never realized MacOS never got true resolution independence like WPF.
This isn't how it really works. It doesn't render 2880x1800 frame and scale down, it will just render at the resolution given for the size of the widgets desired. Any modern GPU can do that, the only time down scaling is needed is if you have a higher resolution bitmap that you want rendered at a lower resolution (or you can scale up, anyways, modern applications should not be rendering fixed sized bitmaps to ever need to do that).
Edit: never mind, that is how it actually works. I never realized MacOS never got true resolution independence like WPF.