getViewZNode( name = 'depth' ) {

		let viewZNode = this._viewZNodes[ name ];

		if ( viewZNode === undefined ) {

			const cameraNear = this._cameraNear;
			const cameraFar = this._cameraFar;

			this._viewZNodes[ name ] = viewZNode = perspectiveDepthToViewZ( this.getTextureNode( name ), cameraNear, cameraFar );

		}

		return viewZNode;

	}
Returns a viewZ node of this pass.

@param {string} [name='depth'] - The output name to get the viewZ node for. In most cases the default `'depth'` can be used however the parameter exists for custom depth outputs.
@return {Node} The viewZ node.