How to avoid using Resources.UnloadUnusedAssets() for dynamically unloaded scenes.

Hi. I'm working on large-scene streaming system for my project, and stuck in memory management.

In detail, my system loads and unloads subscene dynamically based on player's position, and the system call Resources.UnloadUnusedAssets() after scene unloaded for clearing memory. But I found that calling Resources.UnloadUnusedAssets() makes huge spike.

With some investigation, this issue can be solved by manually releasing referenced assets (

)

But the problem is that some assets are referenced over the multiple scenes (+ other script!), and hard to extracts only "unused asests".

So, my question is that:
1. How to get asset list which is referenced by specific scene?
2. How to unload "not used assets" without calling UnloadUnusedAssets()?, especially after scene unloaded.

Thanks.

 

Also, if I manage manually my assets, what assets should be destroyed manually?

Texture, Material, Shader, Mesh, AnimationClip, AnimationRuntimeController ...

Any other assets?

 

Hello!
Did you find a solution for that problem? I also need to avoid unload unused assets.

 

The best solution if you need fine-grained control over memory in Unity is the Addressables System.

You can check that out the package here: https://docs.unity3d.com/Packages/com.unity.addressables@1.19/manual/index.html
And here is its dedicated subforum: https://forum.unity.com/forums/addressables.156/

 

I have implemented my own asset management system, which tracking all references for trackable assets. For this, I should add my management component to all of my MeshRenderer, SkinnedMeshRenderer, AudioSource and so on.

 

Thanks for your replies!
I have looked into addressables system but for example meshes in scenes didnt get unloaded automatically as I expected. We now also looked into making an own system that unloads them.