Fix multiscene ops and batch script generation

0.6.0:

- feat: button to generate a background rendering script to batch multi-scene
- fix: exposed checkbox to change scene AA settings, should be on except if there are NG_merges. (auto-off when using merge nodes buttons)
- fix: default generated scene have native AA
- fix: adding layers from object in other scene use active scene (stop always rerouting to 'Render' scene)

gen_vlayer.py

@@ -40,7 +40,11 @@ def add_rlayer(layer_name, scene=None, location=None, color=None, node_name=None
     return comp
 
 def connect_render_layer(rlayer, ng=None, out=None, frame=None):
-    scene = fn.get_render_scene()
+    if bpy.context.scene.name == 'Scene':
+        scene = fn.get_render_scene()
+    else:
+        scene = bpy.context.scene
+
     nodes = scene.node_tree.nodes
     links = scene.node_tree.links
 
@@ -147,6 +151,9 @@ def connect_render_layer(rlayer, ng=None, out=None, frame=None):
         # ng_in.outputs[vl_name]
         ngroup.links.new(ng_in.outputs[vl_name], aa.inputs[0]) # node_tree
         ngroup.links.new(aa.outputs[0], ng_out.inputs[vl_name]) # node_tree
+        
+        aa.mute = scene.use_aa # mute if native AA is used
+
 
     fn.reorganise_NG_nodegroup(ng) # decorative
 
@@ -210,8 +217,10 @@ def connect_render_layer(rlayer, ng=None, out=None, frame=None):
 def get_set_viewlayer_from_gp(ob, l, scene=None):
     '''setup ouptut from passed gp obj > layer'''
     if not scene:
-        # scene = bpy.context.scene
-        scene = fn.get_render_scene() # create if necessary
+        if bpy.context.scene.name != 'Scene':
+            scene = bpy.context.scene
+        else:
+            scene = fn.get_render_scene()
 
     node_tree = scene.node_tree
     nodes = node_tree.nodes