"...which will create seamlessly-tileable textures for other plugins which require them like CC Sphere, CC Cylinder, Polar Coordinates, etc. or any 3D program. It works by creating a copy of the texture offset by 50%, and smoothly interpolating between the offset and the original texture."
It may be easier than using an Offset filter and Paint/Clone. By the way, Pixel Bender filters work in Photoshop and After Effects CS4 and above.