Hi

I rendered this 3D plan in a 2D view using a directional light and a raytraced shadows in a very high res setting - Shadow rays 5 and ray depth limit also set to 5 and as you can see the shadows on the floor or on other objects have some kind of layered and multiple-transparency effects - the shadows are cast by the wall which is opaque and is a polysurface and also by other objects but I think that the main probelm is by the wall.

HELp as this is urgent.

NIR