A request that can be used for making specific rendering requests.
You can use a RenderRequest and Camera.ProcessRenderRequests to request a specific set of RenderRexture resuls. This is useful for custom scene tooling and baking.
| isValid | Is this request properly formed. | 
| mode | The type of request. | 
| outputSpace | Defines in which space render requests will be be outputted. | 
| result | The result of the request. |