Determines how images are blended with existing pixels when drawn.
@:value(cast 1)@:enum@:implinlineread onlyAdditive:BlendMode = 1
@:value(cast 2)@:enum@:implinlineread onlyMultiply:BlendMode = 2
@:value(cast 0)@:enum@:implinlineread onlyNormal:BlendMode = 0
@:value(cast 3)@:enum@:implinlineread onlyScreen:BlendMode = 3