System Maintenance scheduled for Sunday, June 24th and may limit functionality intermittently. IMPORTANT: When RenderMan 22 is released, the RenderMan 20 and 21 user documentation covering the renderer and bridge products will be retired to a download package. It will not be live on the website to avoid confusion between versions.
While Materials control the appearance of an object, patterns control the detail by varying the parameters of the material's Bxdf across a surface. This is similar to the way texture artists use textures to control the look of a material. RenderMan ships with a set of patterns that allow texturing, color correction, bumping, and various utility shading systems.
The patterns can be divided into the following categories: