Yes it would be possible! There isn’t GPU hardware that does it, but it could be done in GPU or CPU software. (This is slower than GPU hardware texture filterin

Yes it would be possible! There isn’t GPU hardware that does it, but it could be done in GPU or CPU software. (This is slower than GPU hardware texture filtering.) Hard to say how much it would help the visual quality, but it’s easy to calculate the costs, which are largely memory. A map map consumes 1/3rd more memory than a texture. If you add a 2nd set of points starting at 75% zoom, then I think (napkin math) it’ll bring your memory consumption closer to 2x the original texture. https://en.wikipedia.org/wiki/Mipmap#Mechanism https://en.wikipedia.org/wiki/Mipmap#Mechanism