Multiple DrawMeshInstancedIndirect???

Hello, I have a simple question, can you call DrawMeshInstancedIndirect multiple times in a frame?
I have a list of unique materials and I want to draw all the sprites grouped by the same material.
Each time I call DrawMeshInstancedIndirect I pass a different material and compute buffer, but it seems to be rendering only the last time I call DrawMeshInstancedIndirect..
Any ideas?

Code (CSharp):

1. class RenderInformation {
2.   public ComputeBuffer matrixBuffer;
3.   public ComputeBuffer argsBuffer;
4.   public Material material;
5.   public uint[] args;
6. }

Code (CSharp):

1. for(int i = 0; i < renderInfos.Length; i++)
2.       Graphics.DrawMeshInstancedIndirect(instanceMesh, 0, renderInfos[i].material, new Bounds(Vector2.zero, Vector3.one * 100), renderInfos[i].argsBuffer);
3.    

 

The materials are different.

That's how I update the buffers:

Code (CSharp):

1. int UpdateBuffers(int renderIndex) {
2.     ClearMatrixBuffer();
3.     processable.SetFilter(new SpriteSheetMaterial { material = renderInfos[renderIndex].material });
4.     NativeArray<RenderData> data = processable.ToComponentDataArray<RenderData>(Allocator.TempJob);
5.     int instanceCount = data.Length;
6.     Debug.Log("Material name:" + renderInfos[renderIndex].material);
7.     Debug.Log("Entities with that material:" + instanceCount);
8.     if(instanceCount > 0) {
9.       NativeArray<float4x2> matrix = new NativeArray<float4x2>(instanceCount, Allocator.TempJob);
10.       var job = new CalculateMatrixJob() {
11.         datas = data,
12.         matrix = matrix
13.       };
14.       JobHandle jobHandle = job.Schedule();
15.       jobHandle.Complete();
16.       renderInfos[renderIndex].matrixBuffer = new ComputeBuffer(instanceCount, 32);
17.       renderInfos[renderIndex].matrixBuffer.SetData(job.matrix);
18.       renderInfos[renderIndex].material.SetBuffer("matrixBuffer", renderInfos[renderIndex].matrixBuffer);
19.       renderInfos[renderIndex].args[1] = (uint)instanceCount;
20.       renderInfos[renderIndex].argsBuffer.SetData(renderInfos[renderIndex].args);
21.       matrix.Dispose();
22.     }
23.     data.Dispose();
24.     return instanceCount;
25.   }

A simple job to fast create the matrix4x2:

Code (CSharp):

1. [BurstCompile]
2. struct CalculateMatrixJob : IJob {
3.   public NativeArray<float4x2> matrix;
4.   [ReadOnly] public NativeArray<RenderData> datas;
5.   public void Execute() {
6.     for(int i = 0; i < datas.Length; i++)
7.       matrix[i] = new float4x2(datas[i].transform, datas[i].uv);
8.   }
9. }

And that's how I call the whole thing:

Code (CSharp):

1. for(int i = 0; i < renderInfos.Length; i++) {
2.       if(UpdateBuffers(i) > 0)
3.         Graphics.DrawMeshInstancedIndirect(instanceMesh, 0, renderInfos[i].material, new Bounds(Vector2.zero, Vector3.one * 100), renderInfos[i].argsBuffer);
4.     }

 

Oh.. ok that's sad.. I was clearing all the buffers every time and that's why only the last one got rendered

1. ClearMatrixBuffer();

I just had to tell him to clear the buffer he is working on.
I don't remove this post so more people can have some examples on DrawMeshInstancedIndirect