RichardGP. I understand your desire.

But currently 3DGS does not have such soft real-time shader. Conitec works on a solution and there is already a first set of shadow-shaders in a beta version. Some users also made similar shadow-shaders but they also do work only in beta versions of the engine because of new exposed post-processing features.

So we have to wait for a christmas present or for 2008. Nobody knows it.