LoadImageAsync fails to generate mipmaps

[akioCL]

When trying to load an image using AsyncImageLoader.LoadImageAsync with default LoaderSettings, I get the following error:

"InvalidOperationException: The writeable UNKNOWN_OBJECT_TYPE FilterMipmapJob.outputMipmap is the same UNKNOWN_OBJECT_TYPE as FilterMipmapJob.inputMipmap, two containers may not be the same (aliasing)."

It seems to be related to the jobs that are creating the mipmaps. I can workaround the issue by disabling mipmap generation.

Unity Version: 2021.2.0b4.3123 Personal

[Looooong]

I haven't tested with Unity 2021 yet. Probably, some changes with the Jobs System or Burst break filter mipmap job. I will take a look at this later.

[nickyonge]

Confirming that I'm getting this same behaviour on Unity 2020.3.1f1 Plus. Full stack trace:

InvalidOperationException: The writeable UNKNOWN_OBJECT_TYPE FilterMipmapJob.outputMipmap is the same UNKNOWN_OBJECT_TYPE as FilterMipmapJob.inputMipmap, two containers may not be the same (aliasing).
Unity.Jobs.LowLevel.Unsafe.JobsUtility.ScheduleParallelFor (Unity.Jobs.LowLevel.Unsafe.JobsUtility+JobScheduleParameters& parameters, System.Int32 arrayLength, System.Int32 innerloopBatchCount) (at <10564ed154d647e194bef4aef8878649>:0)
Unity.Jobs.IJobParallelForExtensions.Schedule[T] (T jobData, System.Int32 arrayLength, System.Int32 innerloopBatchCount, Unity.Jobs.JobHandle dependsOn) (at <10564ed154d647e194bef4aef8878649>:0)
AsyncImageLoader+ImageImporter.ProcessRawTextureData (Unity.Collections.NativeArray`1[T] rawTextureView, System.Int32 mipmapCount) (at Assets/UnityAsyncImageLoader/Runtime/ImageImporter.cs:228)
AsyncImageLoader+ImageImporter+<CreateNewTextureAsync>d__17.MoveNext () (at Assets/UnityAsyncImageLoader/Runtime/ImageImporter.cs:103)
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () (at <eae584ce26bc40229c1b1aa476bfa589>:0)
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) (at <eae584ce26bc40229c1b1aa476bfa589>:0)
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) (at <eae584ce26bc40229c1b1aa476bfa589>:0)
System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) (at <eae584ce26bc40229c1b1aa476bfa589>:0)
System.Runtime.CompilerServices.TaskAwaiter`1[TResult].GetResult () (at <eae584ce26bc40229c1b1aa476bfa589>:0)
AsyncImageLoader+<CreateFromImageAsync>d__9.MoveNext () (at Assets/UnityAsyncImageLoader/Runtime/AsyncImageLoader.cs:105)
UnityEngine.Debug:LogException(Exception)
<CreateFromImageAsync>d__9:MoveNext() (at Assets/UnityAsyncImageLoader/Runtime/AsyncImageLoader.cs:108)
System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1:SetException(Exception)
<CreateNewTextureAsync>d__17:MoveNext() (at Assets/UnityAsyncImageLoader/Runtime/ImageImporter.cs:106)
UnityEngine.UnitySynchronizationContext:ExecuteTasks()

[ookii-tsuki]

@Looooong was this fixed yet, because I'm still getting the same issue

[Looooong]

@Looooong was this fixed yet, because I'm still getting the same issue

Sorry, I haven't fixed this yet. PR is welcomed.

[Looooong]

@akioCL @nickyonge @ookii-tsuki I published a fix in version 0.1.2. I tested and it works in Unity 2021.2. If you are using Unity 2020 or 2021.1, can you check and see if it works for you as well?

[Looooong]

This is fixed, further improved and unit tested.