RenderMan Interface Specification

The RenderMan Interface Specification (RIS) is a set of guidelines and standards for creating and processing 3D graphics, primarily developed by Pixar. It defines how software should communicate with rendering engines, which translate 3D models and scenes into realistic images. By following these standards, different software tools can work together seamlessly, making it easier for artists to create high-quality visual content in films and animations. Essentially, RIS provides a common language for the complex tasks involved in rendering, ensuring consistency and efficiency in the production pipeline.