Dolphin multimonitor support.

[Qaazavaca Qaanic]

good luck getting the hud to follow the camera, that will involve modding the game engine, not an easy task.
if the hud merely disappears without changing size when the camera moves, you'd have to change whatever compare or position is being done.
if the hud changes size when you move the camera, you'd have to move the hud plane further forward.