Bug [1.1.0-exp.1] LockBufferForWrite: Multiple uploads in flight for buffer x of size 4194304

I get the following log at 1.1.0-exp.1 with Unity 2022.3.10f1

Spoiler

LockBufferForWrite: Multiple uploads in flight for buffer 000001B464BDCE78 (bufferHandle: 8137) of size 4194304. Falling back to slow path. LockBufferForWrite() should be called only once per frame on D3D11.
UnityEngine.GraphicsBuffer:LockBufferForWrite<byte> (int,int)
Unity.Rendering.SparseUploader:Begin (int,int,int) (at ./Library/PackageCache/com.unity.entities.graphics@1.1.0-exp.1/Unity.Entities.Graphics/SparseUploader.cs:683)
Unity.Rendering.EntitiesGraphicsSystem:StartUpdate (int,int,int) (at ./Library/PackageCache/com.unity.entities.graphics@1.1.0-exp.1/Unity.Entities.Graphics/EntitiesGraphicsSystem.cs:2530)
Unity.Rendering.EntitiesGraphicsSystem:UpdateAllBatches (Unity.Jobs.JobHandle) (at ./Library/PackageCache/com.unity.entities.graphics@1.1.0-exp.1/Unity.Entities.Graphics/EntitiesGraphicsSystem.cs:2001)
Unity.Rendering.EntitiesGraphicsSystem:UpdateEntitiesGraphicsBatches (Unity.Jobs.JobHandle) (at ./Library/PackageCache/com.unity.entities.graphics@1.1.0-exp.1/Unity.Entities.Graphics/EntitiesGraphicsSystem.cs:1227)
Unity.Rendering.EntitiesGraphicsSystem:OnUpdate () (at ./Library/PackageCache/com.unity.entities.graphics@1.1.0-exp.1/Unity.Entities.Graphics/EntitiesGraphicsSystem.cs:1327)
Unity.Entities.SystemBase:Update () (at ./Library/PackageCache/com.unity.entities@1.1.0-exp.1/Unity.Entities/SystemBase.cs:418)
Unity.Entities.ComponentSystemGroup:UpdateAllSystems () (at ./Library/PackageCache/com.unity.entities@1.1.0-exp.1/Unity.Entities/ComponentSystemGroup.cs:723)
Unity.Entities.ComponentSystemGroup:OnUpdate () (at ./Library/PackageCache/com.unity.entities@1.1.0-exp.1/Unity.Entities/ComponentSystemGroup.cs:681)
Unity.Entities.SystemBase:Update () (at ./Library/PackageCache/com.unity.entities@1.1.0-exp.1/Unity.Entities/SystemBase.cs:418)
Unity.Entities.ScriptBehaviourUpdateOrder/DummyDelegateWrapper:TriggerUpdate () (at ./Library/PackageCache/com.unity.entities@1.1.0-exp.1/Unity.Entities/ScriptBehaviourUpdateOrder.cs:523)

 

I believe it's just a environment subscene that able to run on mobile. Before that at 1.0.16, I never get this log. I only the log occasionally though at editor and seems like doesn't make the game stop working.

 

New update. I get the same log at windows player runtime with extremely simple subscene.

Spoiler

 

I also get same logs on the same unity version.

It happens with my package for rendering sprites for dots. I use writing to ComputeBuffer through NativeArray to pass data to StructurredBuffer on GPU, I use parallel jobs to fill array with data. This logs start to appear when both game and scene windows are NOT active and at the same time I'm starting to see graphics artifacts which seems like invalidated data was passed to buffer. It is odd, because I call BeginWrite and EndWrite 1 time each frame but logs tell me opposite. I try to find source of graphic artifacts for a long time already, maybe it is related to how buffers behaves, at least it has same reproduction way.

UPD: this happens frequently when Profiler is opened and even if game window is opened

 

Looks like it's regression at Unity 2022.3.10f1. It's reproducible at both 1.1.0-exp.1 and 1.0.16

 

Not sure whether it's related issue but currently when u have 2 subscene that has real time light and u keep swapping between 2 subscene at Scene Asset of Subscene game object, you will see the light intensity keep increasing until crazy exposure. Looks like graphics never release properly and keep stacking.