An unsigned scalar integer function to be used within the visual shader graph. Accept an unsigned integer scalar ([code]x[/code]) to the input port and transform it according to [member function]. A function to be applied to the scalar. See [enum Function] for options. Negates the [code]x[/code] using [code]-(x)[/code]. Returns the result of bitwise [code]NOT[/code] operation on the integer. Translates to [code]~a[/code] in the Godot Shader Language. Represents the size of the [enum Function] enum.