Question Sending enums to compute shader?

Hey guys! I'm having problems sending an enum value to a compute shader.

What I basically have is a component Shape with a public enum ShapeType and a public attribute shapeType of type ShapeType, so I can select it from the inspector.

Code (CSharp):

1.      
2. public class Shape : MonoBehaviour
3. {
4.     public enum ShapeType {Sphere, Cube, Torus}
5.    
6.     public ShapeType shapeType;
7. }

In my main script I'm rendering a texture using a compute shader which looks like this

Code (CSharp):

1. Texture2D<float4> source;
2. RWTexture2D<float4> result;
3.  
4. struct Shape {
5.      int shapeType;
6. };
7.  
8. StructuredBuffer<Shape> shapes;
9. int numShapes = 0;
10.  
11. [numthreads(8,8,1)]
12. void CSMain (uint3 id : SV_DispatchThreadID)
13. {
14.      Shape shape = shapes[0];
15.      result[id.xy] = float4(63.75 * shape.shapeType, 0, 0, 0.0);
16. }

The texture is rendered on OnRenderImage which is also where I set the structured buffer and its size. There I get all the objects with Shape in my scene and convert them to an array of ShapeData struct which looks like this.

Code (CSharp):

1.    
2. struct ShapeData {
3.      public int shapeType;
4.    
5.      public static int GetSize() {
6.             return sizeof (int);
7.       }
8. }

The problem is, when I change the shape type of an object in the scene, the screen stays black, indicating that the shape type remains 0, even though it should be a shade of red. Am I missing something?