Question NativeArray.Slice throughs ArgumentException: Slice may not be used on a restricted range array

Hi,

Passing a persistent allocated nativearray to a job's constructor then calling Slice on it always throws. ArgumentException: Slice may not be used on a restricted range array
I tried Slice(0,1) to make sure I am not overflowing the index and still got the same exception.

Code (CSharp):

1.  
2.     public struct Job : IJobParallelFor
3.     {
4.         public NativeArray<Vector3> summonedPos;
5.  
6.         public void Execute(int index)
7.         {
8.             var ns = summonedPos.Slice(0, 1);
9.             //ArgumentException: Slice may not be used on a restricted range array
10.             //I checked and positive that summonedPos length is more than 1
11.         }
12.     }
13.  
14.    public class JobManager : MonoBehaviour
15.     {
16.         private NativeArray<SpawnPoint.ParallelData> _spawnersArray;
17.         private Job _job;
18.        
19.        public void Initialize()
20.         {
21.             _summonedPos = new NativeArray<Vector3>(_spawnPoints.Length * 50, Allocator.Persistent);
22.             _job = new Job
23.             {
24.                 summonedPos = _summonedPos
25.             };
26.         }
27.  

Thanks for advance.

 

Because you're in a parallel job so what index you can use on the NativeArray is restricted for safety.

Either you need to mark the NativeArray [ReadOnly] (the best approach) or if you are certain it's safe to write to an arbitrary index you need to use [NativeDisableParallelForRestriction]

 

Thank you very much.
I will use NativeDisableParallelForRestriction, since it's a multidimensional array and each thread has a distinct slice (inner array) so the threads won't overwrite each other.