r|shaders is a collection of scripted procedural shaders able to simulate natural environment and surfaces as ground, snow, ice, lava, water, sand etc. The collection contains 8 materials for 3ds max. User can controls a lot of parameters in a simple and effective way to simulate a big amount of surfaces, some of it are derived from shaders developed for production environment as Roland Emmerich "2012" movie. The shaders can be mixed with others to create more complex final results.