https://forum.simplymaya.com/showthre...threadid=18534

Sorry I just rather not type it all out again :p

In your case for step three -- don't bother creating a "map" of your reflectivity... just move the slider in the shader attributes... it should be the same reflectivity across the entire surface (you need to create a map if, for instance, only a water-puddle on the floor is reflective so you don't reflect the entire floor.)