That’s not correct. See physically based rendering (pbr book) chapter 8. Non-antialiasing is just taking fewer samples and not attenuating the aliasing artifac

That’s not correct. See physically based rendering (pbr book) chapter 8. Non-antialiasing is just taking fewer samples and not attenuating the aliasing artifact band with a filter. A gui is more complex. Most graphics are collections of blocks. But then if you do any effects like filling a bezier curve or shadow you are back to the point sampling model.