(Jobs) Accessing Array of Structures as Array of Components of Structures (Native Slice Stride?)

I have a structure like

Code (CSharp):

1. public struct Placement
2. {
3.     public float3 position;
4.     public float3 forward;
5.     public float3 up;
6. }

I have a

NativeArray<Placement>

that is required later. The jobs that fill the position, forward, and up of this struct are different and they require a

NativeSlice<float3>

each to write to. I would like to use this array of Placement structs as the input to these jobs (possibly having all 3 run in parallel without dependencies on each other). I DO NOT want to copy this AoS to three separate Arrays and back.

I think NativeSlice.SliceWithStride comes into play here, but I can't tell from the horrendous documentation.

Please don't provide me any alternatives. I know they exist, but I'd like a solution that fits the above criteria. Thank you!

 

This has nothing to do with burst but...
you are on the right track

Code (CSharp):

1. NativeArray<Placement> placement = new NativeArray<Placement>(1234, Allocator.Temp);
2.  
3. NativeSlice<float3> position = placement.Slice().SliceWithStride<float3>(0);
4. NativeSlice<float3> forward = placement.Slice().SliceWithStride<float3>(12);
5. NativeSlice<float3> up = placement.Slice().SliceWithStride<float3>(24);

You're kind of playing with fire with these magic numbers though, so I'd usually do something like this to be a bit safer.

Code (CSharp):

1.     [StructLayout(LayoutKind.Explicit)]
2.     public struct Placement
3.     {
4.         public const int PositionOffset = 0;
5.         public const int ForwardOffset = 12;
6.         public const int UpOffset = 24;
7.    
8.         [FieldOffset(PositionOffset)]
9.         public float3 position;
10.  
11.         [FieldOffset(ForwardOffset)]
12.         public float3 forward;
13.  
14.         [FieldOffset(UpOffset)]
15.         public float3 up;
16.     }

Code (CSharp):

1. NativeSlice<float3> position = placement.Slice().SliceWithStride<float3>(Placement.PositionOffset);
2. NativeSlice<float3> forward = placement.Slice().SliceWithStride<float3>(Placement.ForwardOffset);
3. NativeSlice<float3> up = placement.Slice().SliceWithStride<float3>(Placement.UpOffset);