getNodeAccess( node, shaderStage ) {

		if ( shaderStage !== 'compute' )
			return NodeAccess.READ_ONLY;

		return node.access;

	}
Returns the node access for the given node and shader stage.

@param {StorageTextureNode|StorageBufferNode} node - The storage node.
@param {string} shaderStage - The shader stage.
@return {string} The node access.