Async Loading Scene code works in editor and mono build but it doesn't in IL2CPP build

Unity Engine
, ,
1

the following code:

    static async Task<(Entity, Entity, Entity, Entity, Entity)> LoadAssetAndCreatePrefabs(World customWorld)
        {
            var customWorldUnmanaged = customWorld.Unmanaged;
            var sceneGuid = new Hash128("52b77c03e0aae864286b8f57b3216c18");
            var sceneEntity = SceneSystem.LoadSceneAsync(customWorldUnmanaged, new EntitySceneReference(sceneGuid, 0));

            while (SceneSystem.IsSceneLoaded(customWorldUnmanaged, sceneEntity) == false)
            {
                customWorld.Update();
                await Task.Yield();
            }

            EntityManager worldEntityManager = customWorld.EntityManager;
            var query = worldEntityManager.CreateEntityQuery(typeof(PrefabsComponent));
            var prefabHolder = query.ToComponentDataArray<PrefabsComponent>(Allocator.Temp);
            var component = prefabHolder[0];
           
            return (component.RedFood, component.BlueFood, component.RedDoofus, component.BlueDoofus, component.SpecialDoofus);
        }

in conjunction with:

UNITY_DISABLE_AUTOMATIC_SYSTEM_BOOTSTRAP_RUNTIME_WORLD

works fine in editor and in a mono client. However in an IL2CPP I get this error:

ArgumentException: Cannot find TypeIndex for type hash 7881543491081840453. Check in the debug file ExportedTypes.log of your project Logs folder (<projectName>/Logs) the corresponding Component type name for the type hash 7881543491081840453. And ensure your runtime depends on all assemblies defining the Component types your data uses.
  at Unity.Entities.Serialization.SerializeUtility.ReadTypeArray (Unity.Entities.Serialization.BinaryReader reader, Unity.Entities.Serialization.DotsSerializationReader dotsReader) [0x000c2] in .\Library\PackageCache\com.unity.entities@1.0.0-pre.15\Unity.Entities\Serialization\SerializeUtility.cs:520
  at Unity.Entities.Serialization.SerializeUtility.EndDeserializeWorld (Unity.Entities.ExclusiveEntityTransaction manager, Unity.Entities.Serialization.DotsSerializationReader dotsReader, Unity.Entities.Serialization.SerializeUtility+WorldDeserializationStatus& status, Unity.Entities.Serialization.SerializeUtility+WorldDeserializationResult& deserializationResult, System.Object[] unityObjects) [0x000bd] in .\Library\PackageCache\com.unity.entities@1.0.0-pre.15\Unity.Entities\Serialization\SerializeUtility.cs:861
  at Unity.Scenes.AsyncLoadSceneOperation+AsyncLoadSceneJob.Execute () [0x000d9] in .\Library\PackageCache\com.unity.entities@1.0.0-pre.15\Unity.Scenes\AsyncLoadSceneOperation.cs:160
  at Unity.Jobs.IJobExtensions+JobStruct`1[T].Execute (T& data, System.IntPtr additionalPtr, System.IntPtr bufferRangePatchData, Unity.Jobs.LowLevel.Unsafe.JobRanges& ranges, System.Int32 jobIndex) [0x00008] in C:\build\output\unity\unity\Runtime\Jobs\Managed\IJob.cs:58

is it expected? do you have a fix? Or should I report a bug instead?

2

This means the hash has generated differently in mono and il2cpp. Every time I reported a case of this the Unity dev team has been very interested and fixed it quickly.

It would be extremely useful to provide what component is generating differently, you can find this in the editor via

TypeIndex typeIndex = TypeManager.GetTypeIndexFromStableTypeHash(7881543491081840453);
Type type = TypeManager.GetType(typeIndex);
3

`yeah, easy. However I am not sure there are others:

0x6d60de0c03b9a745 - 7881543491081840453 - Unity.Rendering.PerInstanceCullingTag

4

Hmm i was not expecting that component.

5

which means?

6

Apparently, it was trimmed
Add a link.xml

<linker>
<!--Preserve entire assembly-->
<assembly fullname="Unity.Entities.Graphics" preserve="all"/>
</linker>
7

thank you