f886f29355
This patch replaces `round_fl_to_int` with `floor` and adjusts the maximum value accordingly. The call to `round_fl_to_int` is problematic here because it messes with the probability distribution at the edges of the value range, meaning the first and last values were only half as common as all other values. Since `round_fl_to_int` does `floor(val + 0.5)`, it will not introduce misbehavior in edge cases. Differential Revision: https://developer.blender.org/D13474