For graphics you probably want a quasirandom https://en.m.wikipedia.org/wiki/Low-discrepancy_sequence https://en.m.wikipedia.org/wiki/Low-discrepancy_sequence

For graphics you probably want a quasirandom https://en.m.wikipedia.org/wiki/Low-discrepancy_sequence https://en.m.wikipedia.org/wiki/Low-discrepancy_sequence A purely random function can lead to clumping and aliasing.