Issue with partially unload an asset.

Unity Engine
1

Hi @unity_bill

In docs for memory management there is one section about unloading partially unload asset:
https://docs.unity3d.com/Packages/com.unity.addressables@1.2/manual/MemoryManagement.html

This case doesnt work for me. I cant unload only just one asset from memory. Even, Im making mirroring load-unload operation there is still reference to asset (in my case im trying load/unload Sprite). In detailed memory profile i got this ref (see screenshot).

Am I doing something wrong?

Loading two different sprites from same bundle:

Addressables.LoadAssetAsync<Sprite>("Assets/Sprites/A/element_fire.png").Completed += handle =>
{
      _opCache.Add(handle);
      image.sprite = handle.Result;
};

Addressables.LoadAssetAsync<Sprite>("Assets/Sprites/B/element_fire_1.png").Completed += handle =>
{
    image2.sprite = handle.Result;
};

Trying unload only one sprite:

           foreach (var sprite in _opCache)
           {
                Addressables.Release(sprite);  
            }
         
            _opCache.Clear();
                         
            image.sprite = null;

            Resources.UnloadUnusedAssets();

I found that reference staying inside of LRUCacheAllocationStrategy, as released operation with referenece to asset (m_Result). When I cleared result to null in ProviderOperation.Destroy() everythings works now. Can you please check/confirm this issue and suggest fix for that?

4994663--487835--Capture.PNG

2

That definitely sounds like a bug. We will take a look at your suggested solution and make sure the references get cleared in the Destroy in all cases (there may be more than just the ProviderOperation that have this issue)

3

Hi, is there any progress on that please?