[0x69420]

i frequently generate something resembling this and/or the hamming distance texture in a fairly dumb manual way, by just doing blend mode overlay on progressively smaller checkerboards.

it's my go-to for lining up pixel-perfect uv maps for more geometric/mechanical 3d assets -- the recursive nature means you can have an easy time hitting, say, the exact corners or centers of luxels if you feel the need.