I said: try it with something sensible like a level or model. It creates a split view as described by sswift above: "Well maybe if you render two screens, one with the camera rotated 90 degrees down" - give or take.
I was thinking that the edge and extremity of the effect might be masked if the lower portion is behind icons and the harsh edge is masked by the edge of the icons themselves.
I was thinking that the edge and extremity of the effect might be masked if the lower portion is behind icons and the harsh edge is masked by the edge of the icons themselves.