Unload all engine resources?

Is it possible to unload all resources being used by the engine and then reload them?

Basically, I’m evaluating using Urho to write a front-end for the Pi 2. When a user would go to launch an application (e.g. a game), the system would need to minimize the memory being used by the front-end, run the application using a blocking call, and then reload the system resources when the other application exited.

I would like to use Urho for the front-end as it will be a 3d interface instead of the typical 2d-style interface in use by most system front-ends.

cache->ReleaseAllResources()
GetResource() reload it if necessary

Thanks I really should just read the documentation more, huh. I’ve spent too many years being spoiled by Intellisense >.>