@Obscura ; @zachagreg ; Ok, here's what I've got about normal maps in DirectX: .- red channel drives the x axis tilt, 0 to 255 (left to right, -1 to 1), where 128 is the middle point, perpendicular to the projecting polygon -. green channel drives the y axis tilt, 0 to 255 (up to down, -1 to 1), where 128 is the middle…