Cool, but its a little hard to work with it. I tried it out in UDK with an inverse fresnel/square root/power/glow nodes, and the sphere mesh gave bad look from the side view. Also, I noticed that the effect is not that visible if there are other textured objects behind the lamp/volumetric light. For your presentations:…
Thanks. I kinda made something for directional light as well, It slowly fades as you look at it directly and avoids clearcut edges, but it gives funny results from certain angles, which is mostly because of the cone shape.