I got amazing startling revolutionary news...

In DX9 and DX10, nVidia and AMD rendering should be identical right. When you add AA and AF, the different algorithms might produce very slightly different colors not noticeable to the eye.

But in DX11, with "tessellation", does that mean driver can "optimize" how many more triangles to add?
ie original "ball" made using 60 triangles.
nvidia tessellation makes 300 triangles.
AMD tessellation makes 200 triangles - but it looks rounder!

just wondering how we gonna handle reference quality images..