diff --git a/addons/material_maker/engine/gen_buffer.gd b/addons/material_maker/engine/gen_buffer.gd
index 79f498a..b7f0f90 100644
--- a/addons/material_maker/engine/gen_buffer.gd
+++ b/addons/material_maker/engine/gen_buffer.gd
@@ -22,6 +22,9 @@ func get_parameter_defs():
 
 func get_input_defs():
 	return [ { name="in", type="rgba" } ]
+	
+func get_output_defs():
+	return [ { type="rgba" } ]
 
 func _get_shader_code(uv : String, output_index : int, context : MMGenContext):
 	var source = get_source(0)
diff --git a/addons/material_maker/engine/gen_shader.gd b/addons/material_maker/engine/gen_shader.gd
index 82136fa..2e98e53 100644
--- a/addons/material_maker/engine/gen_shader.gd
+++ b/addons/material_maker/engine/gen_shader.gd
@@ -33,6 +33,15 @@ func get_output_defs():
 func set_shader_model(data: Dictionary):
 	shader_model = data
 	init_parameters()
+	if shader_model.has("outputs"):
+		for i in range(shader_model.outputs.size()):
+			var output = shader_model.outputs[i]
+			if output.has("rgba"):
+				shader_model.outputs[i].type = "rgba"
+			elif output.has("rgb"):
+				shader_model.outputs[i].type = "rgb"
+			else:
+				shader_model.outputs[i].type = "f"
 
 func find_keyword_call(string, keyword):
 	var search_string = "$%s(" % keyword
diff --git a/addons/material_maker/graph_edit.gd b/addons/material_maker/graph_edit.gd
index 880ab96..c29dd6e 100644
--- a/addons/material_maker/graph_edit.gd
+++ b/addons/material_maker/graph_edit.gd
@@ -64,7 +64,9 @@ func remove_node(node):
 # Global operations on graph
 
 func update_tab_title():
+	print("update_tab_title")
 	if !get_parent().has_method("set_tab_title"):
+		print("no set_tab_title method")
 		return
 	var title = "[unnamed]"
 	if save_path != null:
@@ -115,7 +117,7 @@ func new_material():
 	if generator != null:
 		add_child(generator)
 		update_graph(generator.get_children(), generator.connections)
-		set_save_path(filename)
+		set_save_path(null)
 		set_need_save(false)
 		center_view()
 
diff --git a/addons/material_maker/nodes/generic.gd b/addons/material_maker/nodes/generic.gd
index 1c39db4..457c8ff 100644
--- a/addons/material_maker/nodes/generic.gd
+++ b/addons/material_maker/nodes/generic.gd
@@ -180,17 +180,14 @@ func update_node():
 	var outputs = generator.get_output_defs()
 	for i in range(outputs.size()):
 		var output = outputs[i]
-		var enable_right = false
+		var enable_right = true
 		var color_right = Color(0.5, 0.5, 0.5)
-		if typeof(output) == TYPE_DICTIONARY:
-			if output.has("rgb"):
-				enable_right = true
-				color_right = Color(0.5, 0.5, 1.0)
-			elif output.has("rgba"):
-				enable_right = true
-				color_right = Color(0.0, 0.5, 0.0, 0.5)
-			elif output.has("f"):
-				enable_right = true
+		assert(typeof(output) == TYPE_DICTIONARY)
+		assert(output.has("type"))
+		enable_right = true
+		match output.type:
+			"rgb": color_right = Color(0.5, 0.5, 1.0)
+			"rgba": color_right = Color(0.0, 0.5, 0.0, 0.5)
 		set_slot(i, is_slot_enabled_left(i), get_slot_type_left(i), get_slot_color_left(i), enable_right, 0, color_right)
 		if i >= get_child_count():
 			var control = Control.new()
diff --git a/addons/material_maker/nodes/warp/warp.tscn b/addons/material_maker/nodes/warp/warp.tscn
index 00decbf..9c01860 100644
--- a/addons/material_maker/nodes/warp/warp.tscn
+++ b/addons/material_maker/nodes/warp/warp.tscn
@@ -4,31 +4,15 @@
 
 [sub_resource type="Theme" id=1]
 
-
-[node name="Warp" type="GraphNode" index="0"]
-
-anchor_left = 0.0
-anchor_top = 0.0
-anchor_right = 0.0
-anchor_bottom = 0.0
+[node name="Warp" type="GraphNode"]
 margin_left = 1.0
 margin_top = 1.0
 margin_right = 91.0
 margin_bottom = 84.0
-rect_pivot_offset = Vector2( 0, 0 )
-rect_clip_content = false
 mouse_filter = 1
-mouse_default_cursor_shape = 0
-size_flags_horizontal = 1
-size_flags_vertical = 1
 theme = SubResource( 1 )
 title = "Warp"
-offset = Vector2( 0, 0 )
 show_close = true
-resizable = false
-selected = false
-comment = false
-overlay = 0
 slot/0/left_enabled = true
 slot/0/left_type = 0
 slot/0/left_color = Color( 0.5, 0.5, 1, 1 )
@@ -48,78 +32,27 @@ slot/2/right_enabled = false
 slot/2/right_type = 0
 slot/2/right_color = Color( 1, 1, 1, 1 )
 script = ExtResource( 1 )
-_sections_unfolded = [ "Theme", "slot", "slot/1" ]
 
-[node name="Label1" type="Label" parent="." index="0"]
-
-anchor_left = 0.0
-anchor_top = 0.0
-anchor_right = 0.0
-anchor_bottom = 0.0
+[node name="Label1" type="Label" parent="."]
 margin_left = 16.0
 margin_top = 24.0
 margin_right = 90.0
 margin_bottom = 38.0
-rect_pivot_offset = Vector2( 0, 0 )
-rect_clip_content = false
-mouse_filter = 2
-mouse_default_cursor_shape = 0
-size_flags_horizontal = 1
-size_flags_vertical = 4
 text = "Source"
-percent_visible = 1.0
-lines_skipped = 0
-max_lines_visible = -1
 
-[node name="Label2" type="Label" parent="." index="1"]
-
-anchor_left = 0.0
-anchor_top = 0.0
-anchor_right = 0.0
-anchor_bottom = 0.0
+[node name="Label2" type="Label" parent="."]
 margin_left = 16.0
 margin_top = 38.0
 margin_right = 90.0
 margin_bottom = 52.0
-rect_pivot_offset = Vector2( 0, 0 )
-rect_clip_content = false
-mouse_filter = 2
-mouse_default_cursor_shape = 0
-size_flags_horizontal = 1
-size_flags_vertical = 4
 text = "Displace"
-percent_visible = 1.0
-lines_skipped = 0
-max_lines_visible = -1
 
-[node name="amount" type="SpinBox" parent="." index="2"]
-
-anchor_left = 0.0
-anchor_top = 0.0
-anchor_right = 0.0
-anchor_bottom = 0.0
+[node name="amount" type="SpinBox" parent="."]
 margin_left = 16.0
 margin_top = 53.0
 margin_right = 90.0
 margin_bottom = 77.0
-rect_pivot_offset = Vector2( 0, 0 )
-rect_clip_content = false
-mouse_filter = 0
-mouse_default_cursor_shape = 0
-size_flags_horizontal = 1
-size_flags_vertical = 1
-min_value = 0.0
 max_value = 1.0
 step = 0.05
-page = 0.0
 value = 0.5
-exp_edit = false
-rounded = false
-editable = true
-prefix = ""
-suffix = ""
-_sections_unfolded = [ "Caret", "Placeholder" ]
-
 [connection signal="close_request" from="." to="." method="queue_free"]
-
-
diff --git a/addons/material_maker/widgets/gradient_editor.gd b/addons/material_maker/widgets/gradient_editor.gd
index 9c209fc..e79453a 100644
--- a/addons/material_maker/widgets/gradient_editor.gd
+++ b/addons/material_maker/widgets/gradient_editor.gd
@@ -56,7 +56,6 @@ func set_value(v):
 			remove_child(c)
 			c.free()
 	for p in value.points:
-		print(p)
 		add_cursor(p.v*(rect_size.x-GradientCursor.WIDTH), p.c)
 	update_shader()