Spotlight

A spotlight emits a cone of light. Only objects within the cone are illuminated. The cone produces light of two degrees of intensity, with a central brightly lit section (the umbra) that acts as a point source, and a surrounding dimly lit section (the penumbra) that merges with the surrounding deep shadow. The angles of these two sections can be individually specified by using the IDirect3DRMLight::GetPenumbra, IDirect3DRMLight::GetUmbra, IDirect3DRMLight::SetPenumbra, and IDirect3DRMLight::SetUmbra methods.