Possible to texture parts of array modifier?

Support Materials and Textures
1

I have an Plane object that has 2 Array Modifiers (so the object duplicates two times). I would like to apply a unique texture to each plane, but currently can only use the same texture across all duplicated planes.

I know I can Apply the modifiers, but the problem is that I am animating the array modifiers (since the offset of the Plane is offset by two animated Empties).

Is there a way to uniquely texture each duplicated object? Or is there a way to Apply the array modifiers but keep the animation going?

Thanks!

2

The only thing that comes to mind is projection mapping. Then different parts of the array will receive only the part of the texture that strikes them along the z-axis.