terrainBlendBuffers = new ComputeBuffer(batchesT.Length, 16, ComputeBufferType.Constant);
terrainBlendBuffers[i].SetData(batchesT);
prop = new MaterialPropertyBlock();
terrainBlendBuffers[i].name = "terrainBlend";
prop.SetConstantBuffer("_TerrainBlendParamsInstanced", terrainBlendBuffers, 0, terrainBlendBuffers[i].count * 16);
Graphics.DrawMeshInstanced(mesh, submeshIndex, _blendMaterial, batchM, batchM.Length, prop,
ShadowCastingMode.Off, true, layer, Camera.current);
I wrote this code, but my CBuffer is 0 as showed in renderdoc:
Very similar code works if I use structured buffers instead.
This is URP Unity 2021.3.9. The only info I found is this:
is this an actual bug or I am getting something wrong?
I wonder if it broke with the introduction of
Graphics.RenderMeshInstanced
I need to check if it works with it
Will it work if you manually define ComputeBufferMode.Dynamic (add at the end of ComputeBuffer constructor).
Also - how do you use it in shader? Like this through macro?
CBUFFER_START(YourConstantBuffer)
float _someYrBufferValue;
CBUFFER_END
Or manually through
cbuffer YourConstantBuffer {
float someValue;
}
Constant buffers definitely works with CommandBuffer.SetGlobalConstantBuffer, maybe something with MPB here.
1 Like
no, I tried all the combinations.
Ah and one more - if you just do MPB.SetBuffer ?
SetBuffer is a structured buffer. With StructuredBuffers it works. Are you asking me to use SetBuffer as constant buffer? hmmm
I mean, I wouldn’t be totally surprised if it worked 
didn’t work. if I had the time I’d test the Graphics.RenderMeshInstanced hyphotesis, but I have to move to other tasks now
I missed the edit. In the shader they are defined as:
CBUFFER_START( TerrainBlend )
float4 _TerrainBlendParamsInstanced[256];
CBUFFER_END
ok same result with RenderMeshInstanced too
Any chance you found a solution?
