Actually, "morphological filtering" is a new anti-aliasing scheme from AMD/ATI which, purportedly, works with any DirectX application. According to AMD/ATI it will not yeild any bad side effects compared to other forms of anti-aliasing which do require support of some kind, in order to have zero artifacts.
As I said I'm really not familiar with this filter but I have seen similar attempts in the past where the filters have done nothing but twist everything on screen into funky shapes. Good intentions, bad result.
