Translate it yourself, it's easy to watch it next time! Ha ha
Otherwise, it is still very hard when you look at it next time! Experience talk! After all, we are all thinking in Chinese!
2.2 The Rendersystem Object The Rendersystem Object is actually an abstract class that defines the interface for the 3D API below. It is responsible for sending rendering Operations to the API, and sets a variety of rendering options. This class is Abstract because all IMplementation is specific to API-with API-Specific Subclasses for each rendering API (such as D3drendersystem For Direct3D). After starting with root :: initialise, the Rendersystem Object for the selected rendering API is becomes available through root :: getRendersystem () by root :: getrendersystem (). However, a typical procedure usually does not need to deal with the Rendersystem Object- you need to use all things for Rendering Object and Customising Settings, which should be available on SceneManager, Material, and other Scene-Oriented Classes. The following two situations require you to directly process the Rendersystem Object: 1) You want to create multiple rendering windows (in this case is a completely separated window, not multiple viewports -, for example, through RenderWindow Class Multi-Page Effect) 2) You need to use the Rendersystem Object to use other advanced features. For this reason, I will not further discuss the Rendersystem Object in these tutorials. You can assume that SceneManager handles the call to Rendersystem when appropriate.
