I am looking for a quite specific shader that allows a normal transparent texture (in this case a window texture), a slider to control how reflective the window is and for it to be affected by light, I have looked everywhere but cannot find
what do you mean by “affected by light”?
are you talking about refraction with a normal map?
if so that requires unity pro to start off, the water pro shader (aside of the reflective part) would then be a place to start off
not realtime reflections, just a cubemap