This shader just blurrs the Z-Buffer-Shadow. It doesn't look as good as conitecs shader so you can use their at once.
actaully it doesnt even do that, it makes a seperate flattened model of its own (not the built in zbuffer shadows) multiple times and scales them with different alpha values, which is very slow. So to be honest its not even better than nothing unless you dont mind taking a fps hit like that.
