Render Pipeline manager.
| currentPipeline | Returns the instance of the current RenderPipeline. |
| beginCameraRendering | Use this to perform per camera render logic or operations before SRP begins a Camera render. This event is issued by an SRP. |
| beginFrameRendering | Use this to perform pre-render logic or operations before an SRP render begins. This event is issued by an SRP. |
| endCameraRendering | Use this to perform per-camera render logic or operations after an SRP ends a Camera render. This event is issued by an SRP. |
| endFrameRendering | Use this to perform post-render logic or operations when an SRP render ends. This event is issued by an SRP. |