Hi guys,
If I drop a greyscale texture map into the IOR (reflection) map channel (with fresnel lock off obviously), which greyscale values (from 0-255) equate to what IOR values ?
Im assuming 0 -255RGB = 0 -100 IOR ??
Cheers
Steve
Ok, ive checked and the IRO does indeed go up to 100.
So on that basis, the rgb value for 1.6IOR is 4RGB.
That means a metal with a IOR value of 12 is 30RGB.
Ok cool 
Ok. This doesnt seem to be working. My reflections go all screwy when I use a IOR map…what am I doing wrong ?
The IOR map is a multiplier for the normal IOR, so it will go from 0 where the map is black to the user-specified IOR where the map is white.
Best regards,
Vlado