Possible for a Compute Buffer to pass a struct containing a Vector3 array?

I want to know if it is possible to pass a structured buffer to my material containing a struct that has a Vector3 array. I feel like this should be doable - my buffer stride is initialized properly.

Ultimately my goal is to have this flexibility, given that I initialize the size of positions[] before filling and setting the data on the buffer:

Code (CSharp):

1. struct Line
2. {
3.     public Vector3[] positions;
4. }

As opposed to a fixed set of Vector3:

Code (CSharp):

1. struct Line
2. {
3.     public Vector3 position0;
4.     public Vector3 position1;
5.     public Vector3 position2;
6.     public Vector3 position3;
7. }

On the shader side, I'm passing this Vector3 array along like so:

Code (CSharp):

1. struct Line
2. {
3.     float3 positions[4];
4. };
5.  
6. uniform StructuredBuffer<Line> lineBuffer;
7.  
8. struct v2g
9. {
10.     float4  pos : SV_POSITION;
11.     float3    positions[4] : LINEPOSITIONS;
12. };
13.  
14. v2g vert(appdata_base v, uint id : SV_VertexID)
15. {
16.     Line line = lineBuffer[id];
17.  
18.     v2g OUT;
19.     OUT.pos = mul(_Object2World, v.vertex);
20.     OUT.positions = line.positions;
21.     return OUT;
22. }

However, I'm getting no errors that would indicate that this isn't allowed, instead it just doesn't work. The former (fixed) count of Vector3's, and the below shader snippet does work however:

Code (CSharp):

1. struct Line
2. {
3.     float3 position0;
4.     float3 position1;
5.     float3 position2;
6.     float3 position3;
7. };
8.  
9. uniform StructuredBuffer<Line> lineBuffer;
10.  
11. struct v2g
12. {
13.     float4  pos : SV_POSITION;
14.     float3    position0 : LINEPOSITION0;
15.     float3    position1 : LINEPOSITION1;
16.     float3    position2 : LINEPOSITION2;
17.     float3    position3 : LINEPOSITION3;
18. };
19.  
20. v2g vert(appdata_base v, uint id : SV_VertexID)
21. {
22.     Line line = lineBuffer[id];
23.  
24.     v2g OUT;
25.     OUT.pos = mul(_Object2World, v.vertex);
26.     OUT.position0 = line.position0;
27.     OUT.position1 = line.position1;
28.     OUT.position2 = line.position2;
29.     OUT.position3 = line.position3;
30.     return OUT;
31. }

Any ideas if this is doable?

 

Bumping -- anyone?