定义一系列描述 Unity 如何渲染帧的命令和设置。
| disposed | 当 RenderPipeline 无效或被销毁时,返回 true。 | 
| ProcessRenderRequests | Executes RenderRequests submitted using Camera.SubmitRenderRequests. | 
| Render | Entry point method that defines custom rendering for this RenderPipeline. | 
| BeginCameraRendering | Calls the RenderPipelineManager.beginCameraRendering delegate. | 
| BeginContextRendering | Calls the RenderPipelineManager.beginContextRendering and RenderPipelineManager.beginFrameRendering delegates. | 
| BeginFrameRendering | Calls the RenderPipelineManager.beginFrameRendering delegate. | 
| EndCameraRendering | Calls the RenderPipelineManager.endCameraRendering delegate. | 
| EndContextRendering | Calls the RenderPipelineManager.endContextRendering and RenderPipelineManager.endFrameRendering delegates. | 
| EndFrameRendering | Calls the RenderPipelineManager.endFrameRendering delegate. |