Lee Griggs shows how to use the user data string shader in C4DtoA.
Arnold lets you work with arbitrary user data that you can later use at shading or render time. It’s a great way to connect multiple textures to a bunch of different objects with a single shader. In Cinema 4D, Arnold has the User Data String Shader for this task.
This new quick tip tutorial from Arnold Rendering Specialist Lee Griggs shows how you can hook up many textures to a single shader and apply those to various objects using the User Data String Shader.