anti-aliasing is not done in shaders. you could still do some blurring with a post-processing shader, but you'd need a7 for that. i'm not sure if there are some kind of per-object blurring shaders - maybe with a vertex shader similar to one of the fur shaders.
That's not true, the view uses a false 3d plane to render from, and since you can do ppes by using and editing the render buffer then you would be able to make anti-aliasing the same way you could anything else.
