Opacity is not additive(*)
if you want full opacity, you need an infinite number of layers (or hope for round-off errors) or put a 100% opaque layer at the bottom.
(*) One clue is that it is not "commutative", in other words, Layer A over Layer B doesn't give the same result as Layer B over Layer A.
if you want full opacity, you need an infinite number of layers (or hope for round-off errors) or put a 100% opaque layer at the bottom.
(*) One clue is that it is not "commutative", in other words, Layer A over Layer B doesn't give the same result as Layer B over Layer A.