NativeArray for Jobs System Need Help

Hello, this is my first post

Is there a work around to this code to make it work?

Code (CSharp):

1. NativeArray<float[,]> MatricesResults = new NativeArray<float[,]>(Matrices.Count, Allocator.Persistent);

Error I get:
The type 'float[*,*]' must be a non-nullable value type in order to use it as parameter 'T' in the generic type or method 'NativeArray<T>'

I want to get multidimensional arrays as result using the Jobs System.

 

Hi, can't have native collections inside native collections, unless its an unsafe one.
Also, no managed types are available either.

Solution to this example however, is to convert multi-dimensional array to a single dimensional array.

Size will be [row * column], index would be [index / row, index % row] + you'd be able to utilize NativeArray<float>.
(actual index access may vary, and depend on implementation)

 

Hello, thank you.

I'll give it a try and see if it works

 

Forgot to mention, if you need matrices - there's float2x2 or float3x3, so you could just use that instead. Its part of Unity Mathematics.

https://docs.unity3d.com/Packages/com.unity.mathematics@0.0/api/Unity.Mathematics.float2x2.html
https://docs.unity3d.com/Packages/com.unity.mathematics@0.0/api/Unity.Mathematics.float3x3.html
https://docs.unity3d.com/Packages/com.unity.mathematics@0.0/api/Unity.Mathematics.float4x4.html

Those are structs, so they'd work with NativeArray just fine. Plus burst compatible.

 

ok, I finally settled with NativeMultiHashmap<int, float> MatriceResults
so i can have multiple multidimensional array as results in a IJobParallelFor.

the [row * column] seems to be working fine, Thank You <3

though I find it weird that the values are reversed after I put them into the NativeMultiHashMap.
So I just put the results in a List first and traverse it backwards.

 

Iirc the hashmap is non-ordererd where I believe they have a hashset that is order bound. I remember seeing those in the collection package docs