This is more of an exercise in learning the limitations of blink script than a functional tool, although it does have some useful alterations and allows for a lot of customisation. The end result is a way of using Point Position and Normals renders to relight an image with a choice of point or spotlight. Directional is easily achieved using these same methods but is not currently part of the script. It will likely be added in future updates.
Gizmos and Games 