Learning Metal with "UsingARenderPipelineToRenderPrimitives"

Hello, Metal is a hard biscuit. the first part of my project is to draw wired platonic solids, I replaced the triangle with a cube which I want to rotate with two sliders. But I don't no how, the MTKView is the view of the viewController, the sliders will rotate too, or not ? Would you developers use the XIP ?