Resolved Status of Burstable scheduling? e.g. scheduling jobs inside [BurstCompile] ISystem.OnUpdate

I found that I couldn't schedule jobs from a

[BurstCompile] ISystem.OnUpdate

, even if the system and jobs involved did nothing, and regardless of whether it was an

IJob

or

IJobParallelFor

or had come from a

LambdaSingleJobDescription

- they all failed to burst compile with various different arcane reasons.

When fishing around the

com.unity.entities

source, I found the following:

Code (CSharp):

1.  
2.         //disabling burst in dotsrt until burstable scheduling works
3. #if !UNITY_DOTSRUNTIME
4.         [BurstCompile]
5. #endif
6.         public void OnUpdate(ref SystemState state)
7.         {
8.             var localToWorldType = state.GetComponentTypeHandle<LocalToWorld>(true);
9.             var childType = state.GetBufferTypeHandle<Child>(true);
10. // ...

It seems that every

ISystem.OnUpdate

with a scheduled job is guarded with that preprocessor condition. The one above (in

LocalToParentSystem.cs

) is the only one I saw with a comment suggesting some reasoning.

So apparently this is a known thing. Is there an open bug or thread for it, or any more info to share on this?

A side question is regarding the usage of

UNITY_DOTSRUNTIME

, although someone else opened a thread specifically asking about that.

EDIT: Oddly, adding the same

#if !UNITY_DOTSRUNTIME

to my own system didn't resolve the issue lol, I guess that define isn't set on user-code? Confusion compounds.

 

It doesn't work with job types defined in the Unity Engine without the Jobs/Collections package. The job types in the Job/Collections package and Entities package usually work. There's an IJobBurstScheduable if you need Bursted scheduling.

 

Oh wonderful, didn't know about the

BurstSchedulable

alternatives, found the

IJobParallelForBurstSchedulable

alternative when digging around there. Thanks!