| Interface | Description | 
|---|---|
| AppProfiler | 
 Can be hooked into the application (and render manager)
  to receive callbacks about specific frame steps. 
 | 
| Enum | Description | 
|---|---|
| AppStep | 
 Indicates an application-level step within the profiled
  frame. 
 | 
| SpStep | 
 Indicates a scene processor-level step within the profiled
 frame. 
 | 
| VpStep | 
 Indicates a ViewPort-level step within the profiled
  frame. 
 |