I'm working on a church model using cycles.
I need a material for the coloured glasses of the church. So i need a material that permits the diffuse lighting around the window, but avoiding the direct lighting of the floor. How can I achieve this effect?
In other words, the light (coming from outside the church, I'm using a sun light) should illuminate the glass and diffuse smooth lighting on the elements close to the window. At the same time, however, the glass material should prevent the light rays from impacting on the floor, avoiding the creation of the light print on the floor.