The following useful sketchup video tutorial is shared by W Design Corp. This tutorial is designed for advanced modelers as sound knowledge in modeling & sketchup materials is required. The tutorial sheds light on the detailed processes for creating realistic grass with the use of proxies in V-ray for SketchUp.
The tutorial is made in three different ways. For this purpose, 4 different sketchup plugins like 3D Tree Maker (extensions.sketchup.com) , Raytracer (extensions.sketchup.com), Chair Fullmer Tools (extensions.sketchup.com) and skatter (http://getskatter.com/) are used.
V-Ray Proxy can control scene memory as well as renders significant amounts of geometry to improve detail and perplexity in scenes. V-Ray Proxy objects can be loaded and unloaded dynamically at render time, which saves huge RAM resources.