Access shadowmaps on forward shading

Hello im trying to implement a toon shader in the forward renderer of ue4 (basically i had to make an unlit material and calculate my own lighting) the problem is there is no way to catch shadows. There is anyway to access the shadowmaps in runtime (i don’t care if it in the material editor or in a c++/blueprint class if i can g et the texture and sent it then to the material editor as a parameter) thanks.

Unlit materials will not have access to shadow maps.