New Mesh() VBO returns null???

What up Unity forum.

I create new Meshes and assign it to a game object I instantiate at runtime.
Problem is when I use glMapBuffer in my native plugin, it returns a NULL value and I can't update it.

Code (CSharp):

1.  int[] vertSizes = new int[activeChunks];
2.         int[] triSizes = new int[activeChunks];
3.         VoxelNativeInterface.GetChunkMeshSizes(vertSizes, triSizes);
4.  
5.         uint[] chunkVBOs = new uint[activeChunks];
6.         uint[] chunkEBOs = new uint[activeChunks];
7.  
8.         int i = 0;
9.         Debug.Log("Active chunks " + activeChunks);
10.         foreach (GameObject chunk in chunks)
11.         {
12.             var filter = chunk.GetComponent<MeshFilter>();
13.             var mesh = new Mesh();
14.             mesh.MarkDynamic();
15.             filter.sharedMesh = mesh;
16.  
17.             Debug.Log("i " + i);
18.             Debug.Log("Vert sizes " + vertSizes[i]);
19.             Debug.Log("tri sizes " + triSizes[i]);
20.  
21.             //Vector3[] newVecs = new Vector3[vertSizes[i]];
22.             //for (int j = 0; j < vertSizes[i]; j++)
23.             //    newVecs[j] = Vector3.zero;
24.             mesh.indexFormat = UnityEngine.Rendering.IndexFormat.UInt32;
25.             mesh.vertices = new Vector3[vertSizes[i]];
26.             mesh.normals = new Vector3[vertSizes[i]];
27.             mesh.uv = new Vector2[0];
28.             mesh.triangles = new int[triSizes[i]];
29.  
30.             mesh.UploadMeshData(true);
31.             chunkVBOs[i] = (uint)mesh.GetNativeVertexBufferPtr(0);
32.             chunkEBOs[i] = (uint)mesh.GetNativeIndexBufferPtr();
33.  
34.             Debug.Log("mesh vertexBuffer count " + mesh.vertexBufferCount);
35.             Debug.Log("mesh vertex count " + mesh.vertexCount);
36.             Debug.Log("mesh indices count " + mesh.GetIndexCount(0));
37.  
38.             Debug.Log("buffer to int: " + (uint)mesh.GetNativeVertexBufferPtr(0));
39.  
40.             i++;
41.         }
42.         for (int j = 0; j < i; j++)
43.         {
44.             Debug.Log("ChunkVBO [" + j + "] " + (uint)chunkVBOs[j]);
45.             Debug.Log("ChunkEBO [" + j + "] " + (uint)chunkEBOs[j]);
46.         }
47.         Debug.Log("Binding chunks");
48.         //GL.IssuePluginEvent(VoxelNativeInterface.BindChunks(activeChunks, chunkVBOs, chunkEBOs), 1);
49.         VoxelNativeInterface.BindChunks(activeChunks, chunkVBOs, chunkEBOs);

Native C++

Code (Boo):

1.  
2.     GLint bufferSize = 0;
3.     void *vboDataPtr = BeginModifyVertexBuffer(bufferSize);
4.  
5.     LogToUnity("BufferSize: " + to_string(bufferSize));
6.     LogToUnity("VBO: " + to_string(m_vbo) + ", EBO: " + to_string(m_ebo));
7.     if (!vboDataPtr)
8.     {
9.         LogToUnity("VBO IS NULLL!");
10.         return;
11.     }
12.  
13.     int vertexStride = bufferSize / m_vertices.size();
14.     char *bufferPtr = (char *)vboDataPtr;
15.     Vertex *vertexPtr = (Vertex*)bufferPtr;
16.  
17.     for (int i = 0; i < m_vertices.size(); i++)
18.     {
19.         const VoxelVertex &src = m_vertices[i];
20.         Vertex &dst = *(Vertex*)bufferPtr;
21.  
22.         dst.pos.x = src.position.x;
23.         dst.pos.y = src.position.y;
24.         dst.pos.z = src.position.z;
25.         dst.normal.x = src.normal.x;
26.         dst.normal.y = src.normal.y;
27.         dst.normal.z = src.normal.z;
28.         bufferPtr += vertexStride;
29.     }
30.  
31.     string msg = "VBO buffer size: " + to_string(bufferSize);
32.     LogToUnity(msg);
33.     EndModifyVertexBuffer();

 

did you find out what the problem was?