Duplicating a Custom Render Texture at runtime

Unity Engine
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1

In order to create a duplicate (copy) of a Custom Render Texture at runtime should I?

A) use the constructor and copy the attributes:

CustomRenderTexture tempCustomRT;

Init()
{
	...
	
	skyMaterial = customRT.material;
	
	if (skyMaterial != null)
	{
	    skyMaterial = new Material(skyMaterial);
	
	    tempCustomRT = new CustomRenderTexture(customRT.width, customRT.height, customRT.format)
	    {
	        dimension = customRT.dimension,
	        descriptor = customRT.descriptor,
	        depth = customRT.depth,
	        antiAliasing = customRT.antiAliasing,
	        format = customRT.format,
	        depthStencilFormat = customRT.depthStencilFormat,
	        initializationMode = customRT.initializationMode,
	        initializationSource = customRT.initializationSource,
	        initializationMaterial = skyMaterial,
	        material = skyMaterial,
	        shaderPass = customRT.shaderPass,
	        updateMode = customRT.updateMode,
	        updatePeriod = customRT.updatePeriod
	    };
	
	    tempCustomRT.Create();
	
	    if (tempCustomRT.IsCreated())
	    {
	        hdriSkyOverride.hdriSky.value = tempCustomRT;
	    }                       
	}
	
	
	...
}


private void OnDestroy()
{
    if (tempCustomRT != null)
    {
        if (tempCustomRT.IsCreated())
        {
        tempCustomRT.DiscardContents();
        tempCustomRT.Release();
        }
        tempCustomRT = null;
    }
}

B) Create a temp custom RT

var tempCustomRT = CustomRenderTexture.GetTemporary(customRT.descriptor);