Bug NativeSpline.EvaluatePosition(..) throws an IndexOutOfRangeException exception when used in IJobFor

Case: 1410516

Hey, so this is kind of a big bug which I am surprised made it in, unless of course I am somehow missing something.

When

EvaluatePosition(..)

is called on a

NativeSpline

in a

IJobFor

's

Execute(..)

method, a

IndexOutOfRangeException: Index 29 is out of restricted IJobParallelFor range [0...0] in ReadWriteBuffer.

exception is thrown.

Simply add a script with the follow code to a GameObject along with a SplineContainer component (with at least two knots) and hit play.

Code (CSharp):

1. using Unity.Collections;
2. using Unity.Jobs;
3. using UnityEngine;
4. using UnityEngine.Splines;
5.  
6. public class SplineJobSample : MonoBehaviour
7. {
8.     private void Start()
9.     {
10.         var spline = GetComponent<SplineContainer>().Spline;
11.         var nativeSpline = new NativeSpline(spline, Allocator.TempJob);
12.         var splineJob = new SplineTestJob()
13.         {
14.             NativeSpline = nativeSpline,
15.         };
16.      
17.         splineJob.Schedule(1, default).Complete();
18.         nativeSpline.Dispose();
19.     }
20.  
21.     private struct SplineTestJob : IJobFor
22.     {
23.         public NativeSpline NativeSpline;
24.  
25.         public void Execute(int index)
26.         {
27.             var result = NativeSpline.EvaluatePosition(0.5f);
28.             Debug.Log("Result: " + result);
29.         }
30.     }
31. }