@ Braxton. Yes you could also assign it to a model, but in a different way, because Matts DLL makes a fast screenshot (btw.: thats the problem of the mirror).
It would be possible to realize it with a shader, for example with the watershader from steempipe. Steempipes watershader uses a extern skin for his water.

@Yulor. It isn't a fake mirror. The mirror is 100% correct. The only problem is the fast switching of the camera between two positions.

The link to the renderview.dll:
renderview

MfG
Jerome