15でましたね。速くなったんでしょうか。
RenderMan Pro Server 15.0 Released
・Unlimited Threading
・Volume Rendering
・New Texture Format: Ptex - The renderer now supports the Ptex texture format providing per-face texture mapping.
・Filter Regions - The shading language supports a new type called filterregion for accessing the texture system.
・Unlocked Procedurals - In prior releases, all procedural primitive geometry was run serially and could not be run simultaneously in multiple threads. This release adds a new attribute that allows this restriction to be removed.
・Subdivision Surface API - There is a new API for subdivision surfaces, providing limit surface and subdivision evaluation services for both procedural plugins and standalone applications.
・Imager Shaders - The renderer now supports arbitrary imager shaders operating on both pixel samples and final pixel values.
・New Re-rendering Features include support for editing multiple lights simultaneously, the re-renderer can freely switch between displaying the scene with full results or just the results from the current edit, support for shader objects in the re-rendering mode of prman has been improved, support for the new volumetric primitives and limited support for co-shader edits has been added.