I want to start a thread to discuss about dirty and clean global illumination. In my opinion GI only worked good for reflector, nothing else. Because the photons that came fron background gives the object skin the dirty light. It is somewhat not honest global illumination. The real global illumination should be soft photons. I had to use bi-gradient to get the soft photons. I only can make two choices for the scene with GI is with Bi-Gradient for soft photons or Texture map for refector. I think it is really silly to have this choice. I need em both.