From 938397f3f6671caabd55e5aa93ef14747148a493 Mon Sep 17 00:00:00 2001
From: RodZill4 <rodzilla@free.fr>
Date: Sat, 13 Oct 2018 17:31:37 +0200
Subject: [PATCH] More node editor progress, support for globals in generic
 nodes

---
 addons/material_maker/common.shader           | 101 -------------
 .../examples/wood_with_blood.ptex             |   2 +-
 .../material_maker/examples/wooden_floor.ptex |   2 +-
 addons/material_maker/graph_edit.gd           |  10 +-
 addons/material_maker/main_window.gd          |   1 +
 addons/material_maker/main_window.tscn        |   9 +-
 addons/material_maker/node_base.gd            |  29 +++-
 addons/material_maker/node_factory.gd         |  18 +++
 addons/material_maker/nodes/blur/blur.gd      |   2 +-
 .../nodes/decompose/decompose.gd              |   2 +-
 addons/material_maker/nodes/emboss/emboss.gd  |   2 +-
 .../material_maker/nodes/material/material.gd |   2 +-
 addons/material_maker/nodes/node_generic.gd   |  27 ++--
 .../nodes/normal_map/normal_map.gd            |   2 +-
 addons/material_maker/preview.tscn            |   2 +-
 addons/material_maker/renderer.gd             |  14 +-
 .../widgets/node_editor/node_editor.tscn      |  36 ++---
 .../widgets/node_editor/parameter.gd          |  39 +++++
 .../widgets/node_editor/parameter.tscn        | 142 ++++++++++++++++--
 addons/material_maker/widgets/tabs.gd         |  13 +-
 addons/material_maker/window_dialog.tscn      |   2 +-
 project.godot                                 |   2 +-
 22 files changed, 288 insertions(+), 171 deletions(-)
 create mode 100644 addons/material_maker/node_factory.gd

diff --git a/addons/material_maker/common.shader b/addons/material_maker/common.shader
index 3b48408..7a9927a 100644
--- a/addons/material_maker/common.shader
+++ b/addons/material_maker/common.shader
@@ -184,107 +184,6 @@ vec2 transform_norepeat(vec2 uv, vec2 translate, float rotate, vec2 scale) {
 	return clamp(transform(uv, translate, rotate, scale), vec2(0.0), vec2(1.0));
 }
 
-vec3 brick(vec2 uv, vec2 bmin, vec2 bmax, float mortar, float bevel) {
-	float color = 0.5;
-    vec2 c1 = (uv-bmin-vec2(mortar))/bevel;
-    vec2 c2 = (bmax-uv-vec2(mortar))/bevel;
-    vec2 c = min(c1, c2);
-    color = clamp(min(c.x, c.y), 0.0, 1.0);
-	return vec3(color, mod(bmin, vec2(1.0, 1.0)));
-}
-
-vec3 bricks_rb(vec2 uv, vec2 count, float repeat, float offset, float mortar, float bevel) {
-	count *= repeat;
-	mortar /= max(count.x, count.y);
-	bevel /= max(count.x, count.y);
-    float x_offset = offset*step(0.5, fract(uv.y*count.y*0.5));
-    vec2 bmin = floor(vec2(uv.x*count.x-x_offset, uv.y*count.y));
-    bmin.x += x_offset;
-    bmin /= count;
-	return brick(uv, bmin, bmin+vec2(1.0)/count, mortar, bevel);
-}
-
-vec3 bricks_rb2(vec2 uv, vec2 count, float repeat, float offset, float mortar, float bevel) {
-	count *= repeat;
-	mortar /= max(2.0*count.x, count.y);
-	bevel /= max(2.0*count.x, count.y);
-    float x_offset = offset*step(0.5, fract(uv.y*count.y*0.5));
-    count.x = count.x*(1.0+step(0.5, fract(uv.y*count.y*0.5)));
-    vec2 bmin = floor(vec2(uv.x*count.x-x_offset, uv.y*count.y));
-    bmin.x += x_offset;
-    bmin /= count;
-	return brick(uv, bmin, bmin+vec2(1.0)/count, mortar, bevel);
-}
-
-vec3 bricks_hb(vec2 uv, vec2 count, float repeat, float offset, float mortar, float bevel) {
-   	float pc = count.x+count.y;
-    float c = pc*repeat;
-	mortar /= c;
-	bevel /= c;
-    vec2 corner = floor(uv*c);
-    float cdiff = mod(corner.x-corner.y, pc);
-    if (cdiff < count.x) {
-		return brick(uv, (corner-vec2(cdiff, 0.0))/c, (corner-vec2(cdiff, 0.0)+vec2(count.x, 1.0))/c, mortar, bevel);
-    } else {
-		return brick(uv, (corner-vec2(0.0, pc-cdiff-1.0))/c, (corner-vec2(0.0, pc-cdiff-1.0)+vec2(1.0, count.y))/c, mortar, bevel);
-    }
-}
-
-vec3 bricks_bw(vec2 uv, vec2 count, float repeat, float offset, float mortar, float bevel) {
-   	vec2 c = 2.0*count*repeat;
-    float mc = max(c.x, c.y);
-	mortar /= mc;
-	bevel /= mc;
-    vec2 corner1 = floor(uv*c);
-    vec2 corner2 = count*floor(repeat*2.0*uv);
-    float cdiff = mod(dot(floor(repeat*2.0*uv), vec2(1.0)), 2.0);
-    vec2 corner;
-    vec2 size;
-    if (cdiff == 0.0) {
-        corner = vec2(corner1.x, corner2.y);
-        size = vec2(1.0, count.y);
-    } else {
-        corner = vec2(corner2.x, corner1.y);
-        size = vec2(count.x, 1.0);
-    }
-	return brick(uv, corner/c, (corner+size)/c, mortar, bevel);
-}
-
-vec3 bricks_sb(vec2 uv, vec2 count, float repeat, float offset, float mortar, float bevel) {
-   	vec2 c = (count+vec2(1.0))*repeat;
-    float mc = max(c.x, c.y);
-	mortar /= mc;
-	bevel /= mc;
-    vec2 corner1 = floor(uv*c);
-    vec2 corner2 = (count+vec2(1.0))*floor(repeat*uv);
-    vec2 rcorner = corner1 - corner2;
-    vec2 corner;
-    vec2 size;
-    if (rcorner.x == 0.0 && rcorner.y < count.y) {
-        corner = corner2;
-        size = vec2(1.0, count.y);
-    } else if (rcorner.y == 0.0) {
-        corner = corner2+vec2(1.0, 0.0);
-        size = vec2(count.x, 1.0);
-    } else if (rcorner.x == count.x) {
-        corner = corner2+vec2(count.x, 1.0);
-        size = vec2(1.0, count.y);
-    } else if (rcorner.y == count.y) {
-        corner = corner2+vec2(0.0, count.y);
-        size = vec2(count.x, 1.0);
-    } else {
-        corner = corner2+vec2(1.0);
-        size = vec2(count.x-1.0, count.y-1.0);
-    }
-	return brick(uv, corner/c, (corner+size)/c, mortar, bevel);
-}
-
-float colored_bricks(vec2 uv, vec2 count, float offset) {
-	float x = floor(uv.x*count.x+offset*step(0.5, fract(uv.y*count.y*0.5)));
-	float y = floor(uv.y*count.y);
-	return fract(x/3.0+y/7.0);
-}
-
 float dots(vec2 uv, float size, float density, int seed) {
 	vec2 seed2 = rand2(vec2(float(seed), 1.0-float(seed)));
 	uv /= size;
diff --git a/addons/material_maker/examples/wood_with_blood.ptex b/addons/material_maker/examples/wood_with_blood.ptex
index ac51ada..57e2f5f 100644
--- a/addons/material_maker/examples/wood_with_blood.ptex
+++ b/addons/material_maker/examples/wood_with_blood.ptex
@@ -1 +1 @@
-{"connections":[{"from":"bricks_0","from_port":0,"to":"blend_0","to_port":0},{"from":"perlin_0","from_port":0,"to":"blend_0","to_port":1},{"from":"normal_map_0","from_port":0,"to":"Material","to_port":4},{"from":"perlin_1","from_port":0,"to":"colorize_2","to_port":0},{"from":"colorize_0","from_port":0,"to":"blend_1","to_port":1},{"from":"perlin_2","from_port":0,"to":"colorize_3","to_port":0},{"from":"colorize_3","from_port":0,"to":"blend_1","to_port":2},{"from":"blend_1","from_port":0,"to":"Material","to_port":0},{"from":"colorize_3","from_port":0,"to":"blend_2","to_port":0},{"from":"blend_2","from_port":0,"to":"Material","to_port":2},{"from":"blend_0","from_port":0,"to":"colorize_0","to_port":0},{"from":"blend_0","from_port":0,"to":"colorize_5","to_port":0},{"from":"colorize_5","from_port":0,"to":"normal_map_0","to_port":0},{"from":"uniform_1","from_port":0,"to":"Material","to_port":1},{"from":"uniform_0","from_port":0,"to":"blend_2","to_port":1},{"from":"perlin_1","from_port":0,"to":"colorize_1","to_port":0},{"from":"combine_0","from_port":0,"to":"export_0","to_port":0},{"from":"uniform_1","from_port":0,"to":"combine_0","to_port":0},{"from":"blend_2","from_port":0,"to":"combine_0","to_port":1},{"from":"colorize_2","from_port":0,"to":"blend_1","to_port":0}],"nodes":[{"albedo_color":{"a":1,"b":1,"g":1,"r":1,"type":"Color"},"ao_light_affect":1,"depth_scale":1,"emission_energy":1,"metallic":1,"name":"Material","node_position":{"x":938,"y":96},"normal_scale":1,"resolution":1,"roughness":1,"type":"material"},{"gradient":[{"b":0,"g":0,"pos":0.518182,"r":0},{"b":1,"g":1,"pos":0.709091,"r":1}],"name":"colorize_3","node_position":{"x":487.633789,"y":65},"type":"colorize"},{"bevel":0,"columns":5,"mortar":0.02,"name":"bricks_0","node_position":{"x":-1,"y":30.5},"pattern":0,"repeat":1,"row_offset":0.5,"rows":1,"type":"bricks"},{"gradient":[{"b":0,"g":0.336914,"pos":0,"r":0.598958},{"b":0,"g":0.454102,"pos":0.118182,"r":0.807292},{"b":0,"g":0.37793,"pos":0.245455,"r":0.671875},{"b":0,"g":0.427734,"pos":0.345455,"r":0.760417},{"b":0.017795,"g":0.488254,"pos":0.527273,"r":0.854167},{"b":0,"g":0.37793,"pos":0.645455,"r":0.671875},{"b":0,"g":0.439453,"pos":0.845455,"r":0.78125},{"b":0,"g":0.357422,"pos":1,"r":0.635417}],"name":"colorize_0","node_position":{"x":472,"y":-41.5},"type":"colorize"},{"iterations":7,"name":"perlin_1","node_position":{"x":110.633789,"y":-143.5},"persistence":0.55,"scale_x":4,"scale_y":4,"type":"perlin"},{"amount":0.4,"blend_type":0,"name":"blend_2","node_position":{"x":690.633789,"y":201.5},"type":"blend"},{"iterations":6,"name":"perlin_2","node_position":{"x":232.633789,"y":40},"persistence":0.65,"scale_x":4,"scale_y":4,"type":"perlin"},{"amount":0.4,"name":"normal_map_0","node_position":{"x":724.633789,"y":345.5},"type":"normal_map"},{"amount":0.5,"blend_type":0,"name":"blend_1","node_position":{"x":707.633789,"y":-68},"type":"blend"},{"amount":1,"blend_type":2,"name":"blend_0","node_position":{"x":271,"y":306.5},"type":"blend"},{"gradient":[{"b":1,"g":1,"pos":0,"r":1},{"b":0,"g":0,"pos":1,"r":0}],"name":"colorize_5","node_position":{"x":503,"y":336.5},"type":"colorize"},{"color":{"a":1,"b":0,"g":0,"r":0,"type":"Color"},"name":"uniform_1","node_position":{"x":753,"y":116},"type":"uniform"},{"color":{"a":1,"b":1,"g":1,"r":1,"type":"Color"},"name":"uniform_0","node_position":{"x":540,"y":234},"type":"uniform"},{"gradient":[{"b":0,"g":0,"pos":0,"r":0.515625},{"b":0,"g":0,"pos":0.145455,"r":0.25},{"b":0,"g":0,"pos":0.445455,"r":0.515625},{"b":0.013184,"g":0.013184,"pos":0.745455,"r":0.28125},{"b":0,"g":0,"pos":1,"r":0.322917}],"name":"colorize_2","node_position":{"x":454.633789,"y":-189.5},"type":"colorize"},{"gradient":[{"b":0.034912,"g":0.129532,"pos":0,"r":0.203125},{"b":0.038791,"g":0.074319,"pos":1,"r":0.114583}],"name":"colorize_1","node_position":{"x":461.329102,"y":-116.699997},"type":"colorize"},{"name":"export_0","node_position":{"x":1090.329102,"y":-76.5},"resolution":1,"suffix":"mr","type":"export"},{"name":"combine_0","node_position":{"x":942.329102,"y":-55.5},"type":"combine"},{"iterations":6,"name":"perlin_0","node_position":{"x":12,"y":243.5},"persistence":0.7,"scale_x":20,"scale_y":3,"type":"perlin"}]}
\ No newline at end of file
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\ No newline at end of file
diff --git a/addons/material_maker/examples/wooden_floor.ptex b/addons/material_maker/examples/wooden_floor.ptex
index ee6d911..9ccbd57 100644
--- a/addons/material_maker/examples/wooden_floor.ptex
+++ b/addons/material_maker/examples/wooden_floor.ptex
@@ -1 +1 @@
-{"connections":[{"from":"bricks_0","from_port":0,"to":"colorize_0","to_port":0},{"from":"colorize_0","from_port":0,"to":"blend_0","to_port":0},{"from":"blend_0","from_port":0,"to":"Material","to_port":0},{"from":"blend_0","from_port":0,"to":"colorize_1","to_port":0},{"from":"colorize_1","from_port":0,"to":"normal_map_0","to_port":0},{"from":"normal_map_0","from_port":0,"to":"Material","to_port":4},{"from":"blend_0","from_port":0,"to":"Material","to_port":2},{"from":"uniform_0","from_port":0,"to":"Material","to_port":1},{"from":"blend_0","from_port":0,"to":"transform_0","to_port":0},{"from":"uniform_0","from_port":0,"to":"combine_0","to_port":0},{"from":"blend_0","from_port":0,"to":"combine_0","to_port":1},{"from":"combine_0","from_port":0,"to":"export_0","to_port":0},{"from":"transform_1","from_port":0,"to":"blend_0","to_port":1},{"from":"perlin_0","from_port":0,"to":"transform_1","to_port":0},{"from":"bricks_0","from_port":1,"to":"decompose_0","to_port":0},{"from":"decompose_0","from_port":0,"to":"transform_1","to_port":1},{"from":"decompose_0","from_port":1,"to":"transform_1","to_port":2}],"nodes":[{"gradient":[{"b":0,"g":0,"pos":0,"r":0},{"b":0.213623,"g":0.391325,"pos":0.145455,"r":0.651042}],"name":"colorize_0","node_position":{"x":524,"y":-100.75},"type":"colorize"},{"amount":0.5,"name":"normal_map_0","node_position":{"x":740,"y":135.25},"type":"normal_map"},{"gradient":[{"b":1,"g":1,"pos":0,"r":1},{"b":0,"g":0,"pos":1,"r":0}],"name":"colorize_1","node_position":{"x":710,"y":208.25},"type":"colorize"},{"color":{"a":1,"b":0,"g":0,"r":0,"type":"Color"},"name":"uniform_0","node_position":{"x":718,"y":73},"type":"uniform"},{"albedo_color":{"a":1,"b":1,"g":1,"r":1,"type":"Color"},"ao_light_affect":1,"depth_scale":1,"emission_energy":1,"metallic":1,"name":"Material","node_position":{"x":930,"y":38},"normal_scale":1,"roughness":1,"type":"material"},{"name":"combine_0","node_position":{"x":866,"y":-78},"type":"combine"},{"name":"export_0","node_position":{"x":1053,"y":-62},"suffix":"mr","type":"export"},{"amount":0.5,"blend_type":0,"name":"blend_0","node_position":{"x":535,"y":2.25},"type":"blend"},{"name":"transform_0","node_position":{"x":527,"y":115},"repeat":true,"rotate":90,"scale_x":1,"scale_y":1,"translate_x":0,"translate_y":0,"type":"transform"},{"iterations":7,"name":"perlin_0","node_position":{"x":69,"y":81.25},"persistence":0.75,"scale_x":4,"scale_y":20,"type":"perlin"},{"name":"decompose_0","node_position":{"x":97,"y":236},"type":"decompose"},{"bevel":0,"columns":1,"mortar":0.02,"name":"bricks_0","node_position":{"x":79,"y":-124.75},"pattern":0,"repeat":1,"row_offset":0.5,"rows":10,"type":"bricks"},{"name":"transform_1","node_position":{"x":290,"y":120},"repeat":true,"rotate":0,"scale_x":1,"scale_y":1,"translate_x":1,"translate_y":1,"type":"transform"}]}
\ No newline at end of file
+{"connections":[{"from":"bricks_0","from_port":0,"to":"colorize_0","to_port":0},{"from":"colorize_0","from_port":0,"to":"blend_0","to_port":0},{"from":"blend_0","from_port":0,"to":"Material","to_port":0},{"from":"blend_0","from_port":0,"to":"colorize_1","to_port":0},{"from":"colorize_1","from_port":0,"to":"normal_map_0","to_port":0},{"from":"normal_map_0","from_port":0,"to":"Material","to_port":4},{"from":"blend_0","from_port":0,"to":"Material","to_port":2},{"from":"uniform_0","from_port":0,"to":"Material","to_port":1},{"from":"uniform_0","from_port":0,"to":"combine_0","to_port":0},{"from":"blend_0","from_port":0,"to":"combine_0","to_port":1},{"from":"combine_0","from_port":0,"to":"export_0","to_port":0},{"from":"transform_1","from_port":0,"to":"blend_0","to_port":1},{"from":"perlin_0","from_port":0,"to":"transform_1","to_port":0},{"from":"bricks_0","from_port":1,"to":"decompose_0","to_port":0},{"from":"decompose_0","from_port":0,"to":"transform_1","to_port":1},{"from":"decompose_0","from_port":1,"to":"transform_1","to_port":2}],"nodes":[{"gradient":{"points":[{"b":0,"g":0,"pos":0,"r":0},{"b":0.213623,"g":0.391325,"pos":0.145455,"r":0.651042}],"type":"Gradient"},"name":"colorize_0","node_position":{"x":524,"y":-100.75},"type":"colorize"},{"amount":0.5,"name":"normal_map_0","node_position":{"x":740,"y":135.25},"size":2,"type":"normal_map"},{"gradient":{"points":[{"b":1,"g":1,"pos":0,"r":1},{"b":0,"g":0,"pos":1,"r":0}],"type":"Gradient"},"name":"colorize_1","node_position":{"x":710,"y":208.25},"type":"colorize"},{"color":{"a":1,"b":0,"g":0,"r":0,"type":"Color"},"name":"uniform_0","node_position":{"x":718,"y":73},"type":"uniform"},{"albedo_color":{"a":1,"b":1,"g":1,"r":1,"type":"Color"},"ao_light_affect":1,"depth_scale":1,"emission_energy":1,"metallic":1,"name":"Material","node_position":{"x":930,"y":38},"normal_scale":1,"resolution":1,"roughness":1,"type":"material"},{"name":"combine_0","node_position":{"x":866,"y":-78},"type":"combine"},{"name":"export_0","node_position":{"x":1053,"y":-62},"resolution":1,"suffix":"mr","type":"export"},{"iterations":7,"name":"perlin_0","node_position":{"x":69,"y":81.25},"persistence":0.75,"scale_x":4,"scale_y":20,"type":"perlin"},{"name":"decompose_0","node_position":{"x":97,"y":236},"type":"decompose"},{"bevel":0,"columns":1,"mortar":0.02,"name":"bricks_0","node_position":{"x":79,"y":-124.75},"pattern":0,"repeat":1,"row_offset":0.5,"rows":10,"type":"bricks"},{"name":"transform_1","node_position":{"x":290,"y":120},"repeat":true,"rotate":0,"scale_x":1,"scale_y":1,"translate_x":1,"translate_y":1,"type":"transform"},{"amount":0.5,"blend_type":0,"name":"blend_0","node_position":{"x":535,"y":2.25},"type":"blend"}]}
\ No newline at end of file
diff --git a/addons/material_maker/graph_edit.gd b/addons/material_maker/graph_edit.gd
index f79bcb9..8c2836c 100644
--- a/addons/material_maker/graph_edit.gd
+++ b/addons/material_maker/graph_edit.gd
@@ -2,6 +2,7 @@ tool
 extends GraphEdit
 
 var editor_interface = null
+var node_factory = null
 var renderer = null
 
 var save_path = null
@@ -116,14 +117,7 @@ func create_nodes(data, position = null):
 	if data == null:
 		return
 	if data.has("type"):
-		var node = null
-		if File.new().file_exists("res://addons/material_maker/nodes/"+data.type+".mmn"):
-			node = preload("res://addons/material_maker/nodes/node_generic.gd").new()
-			node.model = data.type
-		else:
-			var node_type = load("res://addons/material_maker/nodes/"+data.type+"/"+data.type+".tscn")
-			if node_type != null:
-				node = node_type.instance()
+		var node = node_factory.create_node(data.type)
 		if node != null:
 			if data.has("name") && !has_node(data.name):
 				node.name = data.name
diff --git a/addons/material_maker/main_window.gd b/addons/material_maker/main_window.gd
index 40424b4..58df3a8 100644
--- a/addons/material_maker/main_window.gd
+++ b/addons/material_maker/main_window.gd
@@ -80,6 +80,7 @@ func menu_about_to_show(name, menu):
 
 func new_pane():
 	var graph_edit = preload("res://addons/material_maker/graph_edit.tscn").instance()
+	graph_edit.node_factory = $NodeFactory
 	graph_edit.renderer = $Renderer
 	graph_edit.editor_interface = editor_interface
 	$VBoxContainer/HBoxContainer/Projects.add_child(graph_edit)
diff --git a/addons/material_maker/main_window.tscn b/addons/material_maker/main_window.tscn
index 12b560e..1e75135 100644
--- a/addons/material_maker/main_window.tscn
+++ b/addons/material_maker/main_window.tscn
@@ -1,12 +1,13 @@
-[gd_scene load_steps=6 format=2]
+[gd_scene load_steps=7 format=2]
 
 [ext_resource path="res://addons/material_maker/main_window.gd" type="Script" id=1]
 [ext_resource path="res://addons/material_maker/library.gd" type="Script" id=2]
 [ext_resource path="res://addons/material_maker/preview.tscn" type="PackedScene" id=3]
 [ext_resource path="res://addons/material_maker/widgets/tabs.gd" type="Script" id=4]
 [ext_resource path="res://addons/material_maker/renderer.tscn" type="PackedScene" id=5]
+[ext_resource path="res://addons/material_maker/node_factory.gd" type="Script" id=6]
 
-[node name="MainWindow" type="Panel"]
+[node name="MainWindow" type="Panel" index="0"]
 
 anchor_left = 0.0
 anchor_top = 0.0
@@ -262,6 +263,10 @@ scrolling_enabled = true
 
 [node name="Renderer" parent="." index="1" instance=ExtResource( 5 )]
 
+[node name="NodeFactory" type="Node" parent="." index="2"]
+
+script = ExtResource( 6 )
+
 [connection signal="no_more_tabs" from="VBoxContainer/HBoxContainer/Projects" to="." method="new_material"]
 
 [connection signal="resized" from="VBoxContainer/HBoxContainer/Projects" to="VBoxContainer/HBoxContainer/Projects" method="_on_Projects_resized"]
diff --git a/addons/material_maker/node_base.gd b/addons/material_maker/node_base.gd
index c208980..5bc44f7 100644
--- a/addons/material_maker/node_base.gd
+++ b/addons/material_maker/node_base.gd
@@ -11,7 +11,10 @@ class OutPort:
 
 	func generate_shader():
 		return node.generate_shader(port)
-		
+
+	func get_globals():
+		return node.get_globals()
+
 	func get_textures():
 		return node.get_textures()
 
@@ -111,10 +114,10 @@ func get_source(index = 0):
 
 func get_source_f(source):
 	var rv
-	if source.has("rgb"):
-		rv = "dot("+source.rgb+", vec3(1.0))/3.0"
-	elif source.has("f"):
+	if source.has("f"):
 		rv = source.f
+	elif source.has("rgb"):
+		rv = "dot("+source.rgb+", vec3(1.0))/3.0"
 	else:
 		rv = "***error***"
 	return rv
@@ -151,6 +154,22 @@ func get_shader_code(uv, slot = 0):
 			rv.f = "vec3(0.0)"
 	return rv
 
+func get_shader_code_with_globals(uv, slot = 0):
+	var code = get_shader_code(uv, slot)
+	code.globals = get_globals()
+	return code
+
+func get_globals():
+	var list = []
+	for i in range(get_connection_input_count()):
+		var source = get_source(i)
+		if source != null:
+			var source_list = source.get_globals()
+			for g in source_list:
+				if list.find(g) == -1:
+					list.append(g)
+	return list
+	
 func get_textures():
 	var list = {}
 	for i in range(get_connection_input_count()):
@@ -181,7 +200,7 @@ func generate_shader(slot = 0):
 	for c in get_parent().get_children():
 		if c is GraphNode:
 			c.reset()
-	return get_parent().renderer.generate_shader(get_shader_code("UV", slot))
+	return get_parent().renderer.generate_shader(get_shader_code_with_globals("UV", slot))
 
 func serialize():
 	var type = get_script().resource_path
diff --git a/addons/material_maker/node_factory.gd b/addons/material_maker/node_factory.gd
new file mode 100644
index 0000000..90e8032
--- /dev/null
+++ b/addons/material_maker/node_factory.gd
@@ -0,0 +1,18 @@
+tool
+extends Node
+
+var includes
+
+func _ready():
+	pass
+
+func create_node(type):
+	var node = null
+	if File.new().file_exists("res://addons/material_maker/nodes/"+type+".mmn"):
+		node = preload("res://addons/material_maker/nodes/node_generic.gd").new()
+		node.model = type
+	else:
+		var node_type = load("res://addons/material_maker/nodes/"+type+"/"+type+".tscn")
+		if node_type != null:
+			node = node_type.instance()
+	return node
diff --git a/addons/material_maker/nodes/blur/blur.gd b/addons/material_maker/nodes/blur/blur.gd
index 9651693..c2a8b49 100644
--- a/addons/material_maker/nodes/blur/blur.gd
+++ b/addons/material_maker/nodes/blur/blur.gd
@@ -68,7 +68,7 @@ func _get_shader_code(uv):
 	var src = get_source()
 	if src == null:
 		return rv
-	input_shader = get_parent().renderer.generate_shader(src.get_shader_code("UV"))
+	input_shader = get_parent().renderer.generate_shader(src.get_shader_code_with_globals("UV"))
 	_rerender()
 	if generated_variants.empty():
 		rv.defs = "uniform sampler2D "+name+"_tex;\n"
diff --git a/addons/material_maker/nodes/decompose/decompose.gd b/addons/material_maker/nodes/decompose/decompose.gd
index 4b26560..6731b81 100644
--- a/addons/material_maker/nodes/decompose/decompose.gd
+++ b/addons/material_maker/nodes/decompose/decompose.gd
@@ -6,7 +6,7 @@ const OUTPUTS = [ "r", "g", "b" ]
 func _get_shader_code(uv, output = 0):
 	var rv = { defs="", code="" }
 	var src = get_source()
-	var src_code = { defs="", code="", rgb="vec3(0.0)" }
+	var src_code = { defs="", code="", f="0.0" }
 	if src != null:
 		src_code = src.get_shader_code(uv)
 	if generated_variants.empty():
diff --git a/addons/material_maker/nodes/emboss/emboss.gd b/addons/material_maker/nodes/emboss/emboss.gd
index 935195a..3247315 100644
--- a/addons/material_maker/nodes/emboss/emboss.gd
+++ b/addons/material_maker/nodes/emboss/emboss.gd
@@ -50,7 +50,7 @@ func _get_shader_code(uv):
 	var src = get_source()
 	if src == null:
 		return rv
-	input_shader = get_parent().generate_shader(src.get_shader_code("UV"))
+	input_shader = get_parent().generate_shader(src.get_shader_code_get_globals("UV"))
 	_rerender()
 	if generated_variants.empty():
 		rv.defs = "uniform sampler2D %s_tex;\n" % [ name ]
diff --git a/addons/material_maker/nodes/material/material.gd b/addons/material_maker/nodes/material/material.gd
index 90eb786..b805475 100644
--- a/addons/material_maker/nodes/material/material.gd
+++ b/addons/material_maker/nodes/material/material.gd
@@ -81,7 +81,7 @@ func update_materials(material_list):
 				var source_code = [ null, null, null ]
 				for i in range(3):
 					if source[i] != null:
-						source_code[i] = source[i].get_shader_code("UV")
+						source_code[i] = source[i].get_shader_code_with_globals("UV")
 					else:
 						source_code[i] = { defs="", code="", f=t.default_values[i] }
 				shader = get_parent().renderer.generate_combined_shader(source_code[0], source_code[1], source_code[2])
diff --git a/addons/material_maker/nodes/node_generic.gd b/addons/material_maker/nodes/node_generic.gd
index 9dd6de1..72cc9fb 100644
--- a/addons/material_maker/nodes/node_generic.gd
+++ b/addons/material_maker/nodes/node_generic.gd
@@ -27,6 +27,8 @@ func set_model(m):
 			data = parse_json(data)
 			model = m
 			update_node(data)
+	else:
+		print("set_model error "+str(m))
 
 func update_node(data):
 	if typeof(data) != TYPE_DICTIONARY:
@@ -66,10 +68,10 @@ func update_node(data):
 				parameters[p.name] = 0.5*(p.min+p.max)
 			elif p.type == "size":
 				control = OptionButton.new()
-				for i in range(p.first, p.last):
+				for i in range(p.first, p.last+1):
 					var s = pow(2, i)
 					control.add_item("%dx%d" % [ s, s ])
-					control.selected = 0 if !p.has("default") else p.default
+					control.selected = 0 if !p.has("default") else p.default-p.first
 			elif p.type == "enum":
 				control = OptionButton.new()
 				for i in p.values.size():
@@ -133,25 +135,32 @@ func subst(string, uv = ""):
 	return string
 
 func _get_shader_code(uv, slot = 0):
-	var rv = { defs="", code="", f="0.0" }
+	var rv = { defs="", code="" }
+	var variant_string = uv+","+str(slot)
 	if model_data != null and model_data.has("outputs") and model_data.outputs.size() > slot:
 		var output = model_data.outputs[slot]
 		if model_data.has("instance") && generated_variants.empty():
 			rv.defs = subst(model_data.instance)
-		var variant_index = generated_variants.find(uv)
+		var variant_index = generated_variants.find(variant_string)
 		if variant_index == -1:
 			variant_index = generated_variants.size()
-			generated_variants.append(uv)
+			generated_variants.append(variant_string)
 			if output.has("rgb"):
-				rv.code += "vec3 %s_%d_rgb = %s;\n" % [ name, variant_index, subst(output.rgb, uv) ]
+				rv.code += "vec3 %s_%d_%d_rgb = %s;\n" % [ name, slot, variant_index, subst(output.rgb, uv) ]
 			if output.has("f"):
-				rv.code += "float %s_%d_f = %s;\n" % [ name, variant_index, subst(output.f, uv) ]
+				rv.code += "float %s_%d_%d_f = %s;\n" % [ name, slot, variant_index, subst(output.f, uv) ]
 		if output.has("rgb"):
-			rv.rgb = "%s_%d_rgb" % [ name, variant_index ]
+			rv.rgb = "%s_%d_%d_rgb" % [ name, slot, variant_index ]
 		if output.has("f"):
-			rv.f = "%s_%d_f" % [ name, variant_index ]
+			rv.f = "%s_%d_%d_f" % [ name, slot, variant_index ]
 	return rv
 
+func get_globals():
+	var list = .get_globals()
+	if model_data.has("global") and list.find(model_data.global) == -1:
+		list.append(model_data.global)
+	return list
+
 func _on_offset_changed():
 	update_shaders()
 
diff --git a/addons/material_maker/nodes/normal_map/normal_map.gd b/addons/material_maker/nodes/normal_map/normal_map.gd
index ebaeadf..2a3a926 100644
--- a/addons/material_maker/nodes/normal_map/normal_map.gd
+++ b/addons/material_maker/nodes/normal_map/normal_map.gd
@@ -51,7 +51,7 @@ func _get_shader_code(uv):
 	var src = get_source()
 	if src == null:
 		return rv
-	input_shader = get_parent().renderer.generate_shader(src.get_shader_code("UV"))
+	input_shader = get_parent().renderer.generate_shader(src.get_shader_code_with_globals("UV"))
 	_rerender()
 	if generated_variants.empty():
 		rv.defs = "uniform sampler2D %s_tex;\n" % [ name ]
diff --git a/addons/material_maker/preview.tscn b/addons/material_maker/preview.tscn
index d7ff026..d8b9881 100644
--- a/addons/material_maker/preview.tscn
+++ b/addons/material_maker/preview.tscn
@@ -340,7 +340,7 @@ _sections_unfolded = [ "GUI", "Render Target" ]
 
 [node name="Objects" type="Spatial" parent="MaterialPreview" index="0"]
 
-transform = Transform( -0.407451, 0, -0.913223, 0, 1, 0, 0.913223, 0, -0.407451, 0, 0, 0 )
+transform = Transform( 0.999464, 0, 0.0326148, 0, 1, 0, -0.0326148, 0, 0.999464, 0, 0, 0 )
 _sections_unfolded = [ "Transform" ]
 
 [node name="Cube" type="MeshInstance" parent="MaterialPreview/Objects" index="0"]
diff --git a/addons/material_maker/renderer.gd b/addons/material_maker/renderer.gd
index 12f71b7..e2f00b1 100644
--- a/addons/material_maker/renderer.gd
+++ b/addons/material_maker/renderer.gd
@@ -15,6 +15,9 @@ static func generate_shader(src_code):
 	file.open("res://addons/material_maker/common.shader", File.READ)
 	code += file.get_as_text()
 	code += "\n"
+	if src_code.has("globals"):
+		for g in src_code.globals:
+			code += g
 	var shader_code = src_code.defs
 	shader_code += "void fragment() {\n"
 	shader_code += src_code.code
@@ -31,6 +34,15 @@ static func generate_combined_shader(red_code, green_code, blue_code):
 	file.open("res://addons/material_maker/common.shader", File.READ)
 	code += file.get_as_text()
 	code += "\n"
+	if red_code.has("globals"):
+		for g in red_code.globals:
+			code += g
+	if green_code.has("globals"):
+		for g in green_code.globals:
+			code += g
+	if blue_code.has("globals"):
+		for g in blue_code.globals:
+			code += g
 	var shader_code = ""
 	shader_code += red_code.defs
 	shader_code += green_code.defs
@@ -72,7 +84,7 @@ func render_shader_to_viewport(shader, textures, render_size, method, args):
 			render_queue.pop_front()
 
 func render_to_viewport(node, render_size, method, args):
-	render_shader_to_viewport(node.generate_shader(), node.get_textures(), render_size, method, args)
+	render_shader_to_viewport(node.generate_shader_with_globals(), node.get_textures(), render_size, method, args)
 
 func export_texture(node, filename, render_size = 256):
 	if node == null:
diff --git a/addons/material_maker/widgets/node_editor/node_editor.tscn b/addons/material_maker/widgets/node_editor/node_editor.tscn
index 6992718..83c2a30 100644
--- a/addons/material_maker/widgets/node_editor/node_editor.tscn
+++ b/addons/material_maker/widgets/node_editor/node_editor.tscn
@@ -3,14 +3,14 @@
 [ext_resource path="res://addons/material_maker/widgets/node_editor/node_editor.gd" type="Script" id=1]
 [ext_resource path="res://addons/material_maker/icons/plus.png" type="Texture" id=2]
 
-[node name="NodeEditor" type="WindowDialog"]
+[node name="NodeEditor" type="WindowDialog" index="0"]
 
 anchor_left = 0.0
 anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
-margin_right = 726.0
-margin_bottom = 399.0
+margin_right = 833.0
+margin_bottom = 398.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
 mouse_filter = 0
@@ -44,8 +44,8 @@ anchor_left = 0.0
 anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
-margin_right = 726.0
-margin_bottom = 375.0
+margin_right = 833.0
+margin_bottom = 374.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
 mouse_filter = 0
@@ -80,7 +80,7 @@ anchor_left = 0.0
 anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
-margin_right = 718.0
+margin_right = 825.0
 margin_bottom = 24.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
@@ -119,7 +119,7 @@ anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
 margin_left = 46.0
-margin_right = 718.0
+margin_right = 825.0
 margin_bottom = 24.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
@@ -143,7 +143,7 @@ anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
 margin_top = 28.0
-margin_right = 718.0
+margin_right = 825.0
 margin_bottom = 42.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
@@ -164,7 +164,7 @@ anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
 margin_top = 46.0
-margin_right = 718.0
+margin_right = 825.0
 margin_bottom = 181.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = true
@@ -185,7 +185,7 @@ anchor_left = 0.0
 anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
-margin_right = 718.0
+margin_right = 825.0
 margin_bottom = 22.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
@@ -313,7 +313,7 @@ anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
 margin_top = 185.0
-margin_right = 718.0
+margin_right = 825.0
 margin_bottom = 199.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
@@ -334,8 +334,8 @@ anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
 margin_top = 203.0
-margin_right = 718.0
-margin_bottom = 339.0
+margin_right = 825.0
+margin_bottom = 338.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = true
 mouse_filter = 0
@@ -355,7 +355,7 @@ anchor_left = 0.0
 anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
-margin_right = 718.0
+margin_right = 825.0
 margin_bottom = 22.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
@@ -466,10 +466,10 @@ anchor_left = 0.0
 anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
-margin_left = 291.0
-margin_top = 379.0
-margin_right = 435.0
-margin_bottom = 399.0
+margin_left = 344.0
+margin_top = 378.0
+margin_right = 488.0
+margin_bottom = 398.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
 mouse_filter = 1
diff --git a/addons/material_maker/widgets/node_editor/parameter.gd b/addons/material_maker/widgets/node_editor/parameter.gd
index 9024680..b03d1cd 100644
--- a/addons/material_maker/widgets/node_editor/parameter.gd
+++ b/addons/material_maker/widgets/node_editor/parameter.gd
@@ -1,11 +1,40 @@
 tool
 extends HBoxContainer
 
+var size_first = 0
+var size_last = 12
+var size_default = 8
+
 const PARAMETER_TYPE = [ "float", "size", "enum", "boolean" ]
 
 func _ready():
 	pass
 
+# Parameter of type SIZE
+
+func update_size_option_button(button, first, last, current):
+	button.clear()
+	for i in range(first, last+1):
+		var s = pow(2, i)
+		button.add_item("%dx%d" % [ s, s ])
+	button.selected = current - first
+
+func update_size_configuration():
+	update_size_option_button($Types/T1/First, 0, size_last, size_first)
+	update_size_option_button($Types/T1/Last, size_first, 12, size_last)
+	update_size_option_button($Types/T1/Default, size_first, size_last, size_default)
+
+func _on_First_item_selected(ID):
+	size_first = ID
+	update_size_configuration()
+
+func _on_Last_item_selected(ID):
+	size_last = size_first + ID
+	update_size_configuration()
+
+func _on_Default_item_selected(ID):
+	size_default = size_first + ID
+
 func set_model_data(data):
 	if data.has("name"):
 		$Name.text = data.name
@@ -29,6 +58,11 @@ func set_model_data(data):
 	elif data.type == "size":
 		$Type.selected = 1
 		w = $Types/T1
+		if data.has("first"):
+			size_first = data.first
+		if data.has("last"):
+			size_last = data.last
+		update_size_configuration()
 	elif data.type == "enum":
 		$Type.selected = 2
 		w = $Types/T2
@@ -50,6 +84,10 @@ func get_model_data():
 		data.step = $Types/T0/Step.value
 		if $Types/T0/SpinBox.pressed:
 			data.widget = "spinbox"
+	elif $Type.selected == 1:
+		data.first =  size_first
+		data.last =  size_last
+		data.default =  size_default
 	return data
 
 func _on_Delete_pressed():
@@ -58,3 +96,4 @@ func _on_Delete_pressed():
 func _on_OptionButton_item_selected(ID):
 	for c in $Types.get_children():
 		c.visible = "T"+str(ID) == c.name
+
diff --git a/addons/material_maker/widgets/node_editor/parameter.tscn b/addons/material_maker/widgets/node_editor/parameter.tscn
index 81ae5bc..5d3a97c 100644
--- a/addons/material_maker/widgets/node_editor/parameter.tscn
+++ b/addons/material_maker/widgets/node_editor/parameter.tscn
@@ -129,7 +129,7 @@ anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
 margin_left = 254.0
-margin_right = 669.0
+margin_right = 801.0
 margin_bottom = 24.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
@@ -146,7 +146,7 @@ anchor_left = 0.0
 anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
-margin_right = 415.0
+margin_right = 547.0
 margin_bottom = 24.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
@@ -297,14 +297,61 @@ editable = true
 prefix = ""
 suffix = ""
 
-[node name="SpinBox" type="CheckBox" parent="Types/T0" index="6"]
+[node name="LabelDefault" type="Label" parent="Types/T0" index="6"]
 
 anchor_left = 0.0
 anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
 margin_left = 336.0
-margin_right = 415.0
+margin_top = 5.0
+margin_right = 386.0
+margin_bottom = 19.0
+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 = "Default:"
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+[node name="Default" type="SpinBox" parent="Types/T0" index="7"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 390.0
+margin_right = 464.0
+margin_bottom = 24.0
+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 = 65535.0
+step = 0.0
+page = 0.0
+value = 0.0
+exp_edit = false
+rounded = false
+editable = true
+prefix = ""
+suffix = ""
+
+[node name="SpinBox" type="CheckBox" parent="Types/T0" index="8"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 468.0
+margin_right = 547.0
 margin_bottom = 24.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
@@ -323,7 +370,6 @@ align = 0
 
 [node name="T1" type="HBoxContainer" parent="Types" index="1"]
 
-editor/display_folded = true
 visible = false
 anchor_left = 0.0
 anchor_top = 0.0
@@ -339,7 +385,7 @@ size_flags_horizontal = 1
 size_flags_vertical = 1
 alignment = 0
 
-[node name="LabelMin" type="Label" parent="Types/T1" index="0"]
+[node name="LabelFirst" type="Label" parent="Types/T1" index="0"]
 
 anchor_left = 0.0
 anchor_top = 0.0
@@ -359,7 +405,7 @@ percent_visible = 1.0
 lines_skipped = 0
 max_lines_visible = -1
 
-[node name="Min" type="OptionButton" parent="Types/T1" index="1"]
+[node name="First" type="OptionButton" parent="Types/T1" index="1"]
 
 anchor_left = 0.0
 anchor_top = 0.0
@@ -385,7 +431,7 @@ align = 0
 items = [  ]
 selected = -1
 
-[node name="LabelMax" type="Label" parent="Types/T1" index="2"]
+[node name="LabelLast" type="Label" parent="Types/T1" index="2"]
 
 anchor_left = 0.0
 anchor_top = 0.0
@@ -406,7 +452,7 @@ percent_visible = 1.0
 lines_skipped = 0
 max_lines_visible = -1
 
-[node name="Max" type="OptionButton" parent="Types/T1" index="3"]
+[node name="Last" type="OptionButton" parent="Types/T1" index="3"]
 
 anchor_left = 0.0
 anchor_top = 0.0
@@ -432,6 +478,53 @@ align = 0
 items = [  ]
 selected = -1
 
+[node name="LabelDefault" type="Label" parent="Types/T1" index="4"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 551.0
+margin_top = 5.0
+margin_right = 581.0
+margin_bottom = 19.0
+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 = "Default:"
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+[node name="Default" type="OptionButton" parent="Types/T1" index="5"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 585.0
+margin_right = 624.0
+margin_bottom = 24.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+focus_mode = 2
+mouse_filter = 0
+mouse_default_cursor_shape = 0
+size_flags_horizontal = 1
+size_flags_vertical = 1
+toggle_mode = false
+action_mode = 0
+enabled_focus_mode = 2
+shortcut = null
+group = null
+flat = false
+align = 0
+items = [  ]
+selected = -1
+
 [node name="T2" type="HBoxContainer" parent="Types" index="2"]
 
 editor/display_folded = true
@@ -477,11 +570,13 @@ selected = -1
 
 [node name="T3" type="HBoxContainer" parent="Types" index="3"]
 
+editor/display_folded = true
 visible = false
 anchor_left = 0.0
 anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
+margin_right = 74.0
 margin_bottom = 24.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
@@ -491,8 +586,37 @@ size_flags_horizontal = 1
 size_flags_vertical = 1
 alignment = 0
 
+[node name="Default" type="CheckBox" parent="Types/T3" index="0"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_right = 74.0
+margin_bottom = 24.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+focus_mode = 2
+mouse_filter = 0
+mouse_default_cursor_shape = 0
+size_flags_horizontal = 1
+size_flags_vertical = 1
+toggle_mode = true
+enabled_focus_mode = 2
+shortcut = null
+group = null
+text = "Default"
+flat = false
+align = 0
+
 [connection signal="pressed" from="Delete" to="." method="_on_Delete_pressed"]
 
 [connection signal="item_selected" from="Type" to="." method="_on_OptionButton_item_selected"]
 
+[connection signal="item_selected" from="Types/T1/First" to="." method="_on_First_item_selected"]
+
+[connection signal="item_selected" from="Types/T1/Last" to="." method="_on_Last_item_selected"]
+
+[connection signal="item_selected" from="Types/T1/Default" to="." method="_on_Default_item_selected"]
+
 
diff --git a/addons/material_maker/widgets/tabs.gd b/addons/material_maker/widgets/tabs.gd
index 110a613..284c6ef 100644
--- a/addons/material_maker/widgets/tabs.gd
+++ b/addons/material_maker/widgets/tabs.gd
@@ -35,20 +35,17 @@ func move_active_tab_to(idx_to):
 	set_current_tab(idx_to)
 
 func set_current_tab(t):
-	if t == current_tab:
+	if t == current_tab or t < 0 or t >= $Tabs.get_tab_count():
 		return
 	var node
 	if current_tab >= 0 && current_tab < $Tabs.get_tab_count():
 		node = get_child(current_tab)
 		node.visible = false
 	current_tab = t
-	if current_tab >= 0 && current_tab < $Tabs.get_tab_count():
-		node = get_child(current_tab)
-		node.visible = true
-		node.rect_position = Vector2(0, $Tabs.rect_size.y)
-		node.rect_size = rect_size - node.rect_position
-	else:
-		print("Incorrect current tab "+str(current_tab))
+	node = get_child(current_tab)
+	node.visible = true
+	node.rect_position = Vector2(0, $Tabs.rect_size.y)
+	node.rect_size = rect_size - node.rect_position
 	$Tabs.current_tab = current_tab
 	emit_signal("tab_changed", current_tab)
 
diff --git a/addons/material_maker/window_dialog.tscn b/addons/material_maker/window_dialog.tscn
index 43324ce..0d2b9de 100644
--- a/addons/material_maker/window_dialog.tscn
+++ b/addons/material_maker/window_dialog.tscn
@@ -2,7 +2,7 @@
 
 [ext_resource path="res://addons/material_maker/main_window.tscn" type="PackedScene" id=1]
 
-[node name="WindowDialog" type="WindowDialog" index="0"]
+[node name="WindowDialog" type="WindowDialog"]
 
 anchor_left = 0.0
 anchor_top = 0.0
diff --git a/project.godot b/project.godot
index 46bb8a0..750593a 100644
--- a/project.godot
+++ b/project.godot
@@ -15,7 +15,7 @@ run/main_scene="res://addons/material_maker/main_window.tscn"
 config/use_custom_user_dir=true
 config/custom_user_dir_name="material_maker"
 config/icon="res://icon.png"
-config/release="0.5"
+config/release="0.6"
 
 [display]