The rendering is done through v-ray asset editor. The V-Ray Asset Editor contains four different tabs ranging from Material Editor, Light Editor, Geometry Editor, and Render Settings Tab. These can be utilized for controlling V-Ray assets and settings.
Asset Editor Button is available in V-ray Toolbar. One can also avail it from Extensions > V-Ray > V-Ray Render and Options > Asset Editor.
Material Editor tab provides information and manages all the materials in the sketchup scene.
Light Asset Lister/Editor tab comprises of information and manages all the lights in the sketchup scene.
Geometry Asset Lister/Editor tab comprises of information on v-ray geometry assets in the sketchup scene.
V-Ray Render Settings tab provides controls for the V-Ray renderer.
Watch the online demonstration.