| src | Append/consume buffer to copy the counter from. | 
| dst | A buffer to copy the counter to. | 
| dstOffsetBytes | Target byte offset in dstbuffer. | 
Adds a command to copy ComputeBuffer or GraphicsBuffer counter value.
Note: this command can not be used on LightEvent command buffers.
See Also: ComputeBuffer.CopyCount and GraphicsBuffer.CopyCount.