| name | Variable name in shader code. | 
| nameID | Property name ID, use Shader.PropertyToID to get it. | 
| val | Value to set. | 
Set a Matrix parameter.
Constant buffers are shared between all kernels in a single compute shader asset. Therefore this function affects all kernels in this ComputeShader.
See Also: SetFloat, SetFloats, SetInt, SetInts, SetBool, SetBuffer,  SetMatrixArray, SetTexture, SetVector, SetVectorArray.