1
$\begingroup$

I can't manage to produce a metallic looking sphere despite trying many things. I have the basics working, i.e shadows, refraction etc. but I'm not sure what combination of these will allow me to produce a metallic surface. I know that it should be reflective and retain it's color but how do I go about accomplishing that? This is my spec and diffuse calc: specular code = vec(1,1,1) * pow((std::max(0.f, dot(light, reflection))), spec)//white specular highlights

diffuse code = vec diffuse = col*std::max(0.f, dot(normal, light));//col = object col

I test if the object that is hit is reflective and calculate the reflection ray, but how do I make it look metallic after producing the reflective image on the sphere?

Improve this question
$\endgroup$
9
  • $\begingroup$ Look up Cook-Torrance. $\endgroup$
    – lightxbulb
    Mar 29, 2020 at 20:20
  • $\begingroup$ Note that how you render the image doesn't really affect whether the surface is metallic. A rasterizer is just as capable of getting a surface to appear metallic as a raytracer. It's all about the lighting model you employ. $\endgroup$
    – Nicol Bolas
    Mar 30, 2020 at 1:33
  • $\begingroup$ won't the way the light interacts with the surface determine whether its metallic or not? $\endgroup$
    – JerSci
    Mar 30, 2020 at 5:52
  • $\begingroup$ Could you post an image? $\endgroup$
    – Simon F
    Mar 30, 2020 at 6:37
  • $\begingroup$ I'm not sure of what exactly $\endgroup$
    – JerSci
    Mar 30, 2020 at 6:38

0

Reset to default

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.