Use different arrays for each field

[SupinePandora43]

as an option

[MultiArray(typeof(Vector3), IndividualArrays = true)]
public readonly partial struct Vector3MultiArray
{
}

[System.Runtime.InteropServices.StructLayout(System.Runtime.InteropServices.LayoutKind.Auto)]
partial struct Vector3MultiArray : global::StructureOfArraysGenerator.IMultiArray<Vector3MultiArray>
{
-   readonly byte[] __value;
+   readonly float[] __valueX;
+   readonly float[] __valueY;
+   readonly float[] __valueZ;
    readonly int __length;
-   readonly int __byteSize;
-   readonly int __byteOffsetX;
-   readonly int __byteOffsetY;
-   readonly int __byteOffsetZ;

    public int Length => __length;
-   public Span<float> X => MemoryMarshal.CreateSpan(ref Unsafe.As<byte, float>(ref Unsafe.Add(ref GetArrayDataReference(__value), __byteOffsetX)), __length);
-   public Span<float> Y => MemoryMarshal.CreateSpan(ref Unsafe.As<byte, float>(ref Unsafe.Add(ref GetArrayDataReference(__value), __byteOffsetY)), __length);
-   public Span<float> Z => MemoryMarshal.CreateSpan(ref Unsafe.As<byte, float>(ref Unsafe.Add(ref GetArrayDataReference(__value), __byteOffsetZ)), __length);
+   public Span<float> X => __valueX;
+   public Span<float> Y => __valueY;
+   public Span<float> Z => __valueZ;

...

}

this will allow to have more than 2^(32-1)/sizeof(T) elements in a single array.

[VoilaNeighbor]

It's hard to see a use case where we have so many elements in use simultaneously. Maybe segments (chunks) could be a better solution, as the Parquet format does.

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