Problem: Fresnel reflection and diffuse layer color

[Micha_cg]

Hallo,

today I was experimenting with rough surfaces and plastics and have got my old problem again - the diffuse layer color influence the fresnel reflection. I have posted it at the bug section some weeks befor, but ... . I think, it's not a VfR problem, more a general Vray issue: I can not build a black plastic sphere with a fresnel reflective plastic coating.

Regards Micha

Image 1: anything is ok


Image2: The reflection is colored? Plastic reflection should be without color, this is a metal propertie


Image3: no black plastic with reflections possible


PS: I have lower the general gamma for a better visible fresnel effect in the constant white environment.

[Micha_cg]

Problem: Fresnel reflection and diffuse layer color

Hmm ... I have restart a new scene and it works now.

[joe_b]

Problem: Fresnel reflection and diffuse layer color

Fresnel map is just returns a grey scale color. The reflection is essentially a "transparency" control so if you have a green diffuse color it will show through. Why is it you can't have a black plastic? Can you not just put a black diffuse color?

What made it "work" when you started a new scene?

I am not sure why that circle would be showing up in the center of your preview...that looks like some kind of transparency issue. Did you have a diffuse transparency map set or something along those lines?

[Micha_cg]

Problem: Fresnel reflection and diffuse layer color

Joe, I will send a bug report per email later. Only a first quick info - single reflection layer materials dosn't work anymore.

[joe_b]

Problem: Fresnel reflection and diffuse layer color

Joe, I will send a bug report per email later. Only a first quick info - single reflection layer materials dosn't work anymore.

Yeah we're working on these problems. I think Vlado has made some fixes that should knock all of this stuff out.

[Micha_cg]

Problem: Fresnel reflection and diffuse layer color

Good news. Thank you.