Correct, mesh warping is for slices. If you look at my image of the Datapath vs Individual GPU Outputs, the Advanced Output of the Datapath has connecting boundaries because Resolume thinks its one display. If you slice and warp each of the quadrants, you can not pull your mesh across these boarders because the video will bleed into undesirable quadrants. This can't happen in the Individual GPU Outputs. I suppose you would have to add a mask if this happens.