BlobAsset unique per prefab on baking.

[celest wigeon]

How to make sure blob assets are unique per prefab (no wasted memory) when baking multiple prefab copies?

[sharp pier]

how are you creating your blob asset

it simply depends how you add it to the store

if you give it the same guid they will all share the same memory

if you give it different guids they will be unique even if the data matches

[celest wigeon]

How do i give guid for it?

{
    public GameObject Prefab;

    private class CreatureEntityBaker : Baker<CreatureEntityAuthoring>
    {
        public override void Bake(CreatureEntityAuthoring authoring)
        {
            Debug.Log("Bake");

            if (authoring.Prefab != null)
            {
                Debug.Log("Bake Prefab");

                Client_CreatureEntityVisual visual = authoring.Prefab.GetComponent<Client_CreatureEntityVisual>();

                if (visual != null)
                {
                    Debug.Log("Bake Visual");

                    AssetReference assetRef = new AssetReference();

                    assetRef.SetEditorAsset(authoring.Prefab);

                    if (assetRef.RuntimeKeyIsValid())
                    {
                        Debug.Log("Bake Addressable");

                        var builder = new BlobBuilder(Allocator.TempJob);

                        ref var root = ref builder.ConstructRoot<GameplayAbilityCollection>();

                        var abilityBuilder = builder.Allocate(ref root.Values, visual.Abilities.Length);

                        for (int it = 0; it < visual.Abilities.Length; ++it)
                        {
                            Bake(visual.Abilities[it].Animation, ref abilityBuilder[0], ref builder);
                        }

                        AddComponent(new CreatureEntity()
                        {
                            Abilities = builder.CreateBlobAssetReference<GameplayAbilityCollection>(Allocator.Persistent)
                        });

                        builder.Dispose();
                    }
                }
            }
        }
    }
}```

there are no guids on my blob builder

How do i create with guids? i can use the asset ref guid as key maybe

[sharp pier]

so you're just creating a new blob here, none of it will be shared

if you want to share identical blob memory between entities you need to pass it to a blob asset store

in bakers this is done via
AddBlobAsset

and a few other overloads

you can either manually set a guid or just let the blob storage mem compare

basically if a blob that matches already exists, it will dispose your blob and replace the reference with the existing blob so now they both point to the same memory