> This may have been asked before, but is there any way to make specular fade off
> with fresnel (or reflection falloff)?
>
> The reason I ask is because of these rather interesting demonstrations of
> real-world specular&  fresnel:
> Everything is Shiny: http://filmicgames.com/archives/547
> Everything has Fresnel: http://filmicgames.com/archives/557
>
> Clearly materials in the real world have specular that fades with fresnel. But
> the only way I can think to achieve that in POV (3.7 beta) is to use an aoi
> texture to blend between 2 different finishes. Which then means I can't use a
> normal map (since the aoi uses the true shape of the surface).
>
> Any ideas?
>
> --
> Tek
> evilsuperbrain.com
>
>
>

As a starting point, you can give an ior to your objects, even if they 
are opaque.
interior{ior IOR}

You can add metallic with a small value.

You can use variable reflection with the fresnel keyword.

I don't think that it will exactly reproduce the real world, as at least 
part of the effect is related to polarisation.




Alain

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