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Rendering surfaces in RenderMan relies on a layerable material called PxrSurface.
Note that the material described below is the full monolithic PxrSurface. For users wanting a simpler or quicker solution we provide other versions of this material ready for your needs without all the extra parameters to walk through. We suggest you use those when appropriate to be efficient. Other users or artists picking up your scenes or shots will thank you for thinking ahead about complexity and usage!
This is the same material model used in Pixar Animation Studios' feature animation. As such there are some important benefits to this material: