V-Ray is a renderer plugin for Rhinoceros. In order to use V-Ray, you must first select it as your current renderer. You can do that by clicking on the Render menu and choosing V-Ray for Rhino from the Current Renderer menu:

 

[Choose Renderer dialog]

 

The V-Ray parameters are divided into several tabs in the render scene dialog; additionally each tab is divided into several rollouts:

[Render Options dialog]

 

For a more detailed description of each rollout, check out the sections below:

 

Global switches

System

Camera

Environment

Image Sampler (Antialiasing)

DMC sampler

Color mapping

VFB channels

Output

Indirect Illumination (GI)

Brute force GI

Irradiance map

Global photon map

Light cache

Caustics

Default displacement

RTEngine