| index | Index of the random write target in the shader. | 
| buffer | Buffer to set as the write target. | 
| preserveCounterValue | Whether to leave the append/consume counter value unchanged. | 
| rt | RenderTargetIdentifier to set as the write target. | 
Set random write target for Shader Model 4.5 level pixel shaders.
This is the CommandBuffer equivalent of Graphics.SetRandomWriteTarget. The same limitations nad exceptions applies to this call.