Some time ago I created this example to show that it's possible to do with MMF.
Maybe someone would like to use it or make it more efficient even for the request in this Thread: Parallax Scrolling / Raster Method
I'm using global values to store the scroll coefficients because arrays pulled down the FPS.
- Some pixels on the right were not pasted (caused by rounded values)
--> resize width of both (!) overlays + 1 pixel
- Frame stagnates if a part of the source overlay is pasted in full length (every time the scroll value of this lines starts at 0)
--> ??? ... no idea