physically based rendering using shaders/custom effects?

[Vaquero]

Thank you for your quick reply. Unfortunately, it doesn't answer my question. I figured, there is no out-of-the-box built-in support, so my question is, how do I get there? Using custom effects and composers? Or exporting GLSL shaders completely from 3ds max?

In the documentation there's this: "The lighting model controls how the surface properties of an object interact with lights to produce shading. The default composer automatically applies a lighting model effect that uses the Lambert model for diffuse shading and the Phong model for specular reflectance." So if I don't want Lambert or Phong, but instead some PBR, I would have to use custom effects to somehow insert the PBR code into the shaders?
Since I'm just wild guessing, help is very much appreciated, if anyone has experience writing shaders for Vizard.