if from_node:
if from_node.type=='NORMAL_MAP':
from_node, _ = get_linked_node_and_socket(node_tree, from_node.inputs["Color"])
+ elif from_node.type=='RGBTOBW':
+ from_node, _ = get_linked_node_and_socket(node_tree, from_node.inputs["Color"])
if alpha_socket:
alpha_from, _ = get_linked_node_and_socket(node_tree, alpha_socket)