firstly thanks for this shader!!
i am trying to rebuild help file, i have imported there mine Xfile, but i am getting strange error light coming in through front side (corner) and doing strange light artifact on opposite site corner as the light is coming.
have i export wrongly Xfile? i am using KwXport.
in zip there are two variations one is one side wall second has thick walls.
SoftShadowsXfile.ZIP (8.5 kB)