diff --git a/addons/procedural_material/common.shader b/addons/procedural_material/common.shader
index 1ddc122..42f80d8 100644
--- a/addons/procedural_material/common.shader
+++ b/addons/procedural_material/common.shader
@@ -261,11 +261,11 @@ float perlin(vec2 uv, vec2 size, int iterations, float persistence, int seed) {
     float acc = 0.0;
     for (int i = 0; i < iterations; ++i) {
     	vec2 step = vec2(1.0)/size;
-		vec2 xy = seed2+floor(fract(uv)*size);
-        float f0 = rand(xy);
-        float f1 = rand(xy+vec2(1.0, 0.0));
-        float f2 = rand(xy+vec2(0.0, 1.0));
-        float f3 = rand(xy+vec2(1.0, 1.0));
+		vec2 xy = floor(uv*size);
+        float f0 = rand(seed2+mod(xy, size));
+        float f1 = rand(seed2+mod(xy+vec2(1.0, 0.0), size));
+        float f2 = rand(seed2+mod(xy+vec2(0.0, 1.0), size));
+        float f3 = rand(seed2+mod(xy+vec2(1.0, 1.0), size));
         vec2 mixval = smoothstep(0.0, 1.0, fract(uv*size));
         rv += coef * mix(mix(f0, f1, mixval.x), mix(f2, f3, mixval.x), mixval.y);
         acc += coef;
diff --git a/addons/procedural_material/library/base.json b/addons/procedural_material/library/base.json
index dfbc17f..d889dc1 100644
--- a/addons/procedural_material/library/base.json
+++ b/addons/procedural_material/library/base.json
@@ -140,6 +140,10 @@
 		"tree_item":"Filters/Combine",
 		"type":"combine"
 	},
+	{
+		"tree_item":"Filters/Decompose",
+		"type":"decompose"
+	},
 	{
 		"tree_item":"Filters/Emboss",
 		"type":"emboss",
diff --git a/addons/procedural_material/main_window.gd b/addons/procedural_material/main_window.gd
index 375f027..663362c 100644
--- a/addons/procedural_material/main_window.gd
+++ b/addons/procedural_material/main_window.gd
@@ -20,6 +20,7 @@ const MENU = [
 	{ menu="Edit", command="edit_paste", shortcut="Control+V", description="Paste" },
 	{ menu="Tools", command="add_to_user_library", description="Add selected node to user library" },
 	{ menu="Tools", command="save_user_library", description="Save user library" },
+	{ menu="Help", command="show_doc", description="User manual" },
 	{ menu="Help", command="bug_report", description="Report a bug" },
 	{ menu="Help" },
 	{ menu="Help", command="about", description="About" }
@@ -170,6 +171,14 @@ func save_user_library():
 	print("Saving user library")
 	$VBoxContainer/HBoxContainer/VBoxContainer/Library.save_library("user://library/user.json")
 
+func show_doc():
+	var doc_path = OS.get_executable_path()
+	doc_path = doc_path.replace("\\", "/")
+	doc_path = doc_path.left(doc_path.rfind("/")+1)+"doc/index.html"
+	var file = File.new()
+	if file.exists(doc_path):
+		OS.shell_open(doc_path)
+
 func bug_report():
 	OS.shell_open("https://github.com/RodZill4/godot-procedural-textures/issues")
 
diff --git a/addons/procedural_material/main_window.tscn b/addons/procedural_material/main_window.tscn
index c48ae92..e360981 100644
--- a/addons/procedural_material/main_window.tscn
+++ b/addons/procedural_material/main_window.tscn
@@ -4,7 +4,7 @@
 [ext_resource path="res://addons/procedural_material/library.gd" type="Script" id=2]
 [ext_resource path="res://addons/procedural_material/preview.tscn" type="PackedScene" id=3]
 
-[node name="MainWindow" type="Panel"]
+[node name="MainWindow" type="Panel" index="0"]
 
 anchor_left = 0.0
 anchor_top = 0.0
diff --git a/addons/procedural_material/nodes/blend.tscn b/addons/procedural_material/nodes/blend.tscn
index f18b8eb..97887b5 100644
--- a/addons/procedural_material/nodes/blend.tscn
+++ b/addons/procedural_material/nodes/blend.tscn
@@ -48,12 +48,12 @@ slot/2/right_type = 0
 slot/2/right_color = Color( 0.5, 0.5, 1, 1 )
 slot/3/left_enabled = true
 slot/3/left_type = 0
-slot/3/left_color = Color( 0.5, 0.5, 1, 1 )
+slot/3/left_color = Color( 0.756863, 0.756863, 0.756863, 1 )
 slot/3/right_enabled = false
 slot/3/right_type = 0
 slot/3/right_color = Color( 0.5, 0.5, 1, 1 )
 script = ExtResource( 1 )
-_sections_unfolded = [ "Mouse", "Theme", "slot", "slot/1" ]
+_sections_unfolded = [ "Mouse", "Theme", "slot", "slot/1", "slot/3" ]
 
 [node name="blend_type" type="OptionButton" parent="." index="0"]
 
@@ -80,7 +80,7 @@ group = null
 text = "Normal"
 flat = false
 align = 0
-items = [ "Normal", null, false, 0, null, "Dissolve", null, false, 1, null, "Multiply", null, false, 2, null, "Screen", null, false, 3, null, "Overlay", null, false, 4, null, "Hard Light", null, false, 5, null, "Soft Light", null, false, 6, null, "Burn", null, false, 7, null, "Dodge", null, false, 8, null, "Lighten", null, false, 9, null, "Darken", null, false, 10, null ]
+items = [ "Normal", null, false, 0, null, "Dissolve", null, false, 1, null, "Multiply", null, false, 2, null, "Screen", null, false, 3, null, "Overlay", null, false, 4, null, "Hard Light", null, false, 5, null, "Soft Light", null, false, 6, null, "Burn", null, false, 7, null, "Dodge", null, false, 8, null, "Lighten", null, false, 9, null, "Darken", null, false, 10, null, "Difference", null, false, 11, null ]
 selected = 0
 
 [node name="Label1" type="Label" parent="." index="1"]
diff --git a/addons/procedural_material/nodes/blur.tscn b/addons/procedural_material/nodes/blur.tscn
index a87b140..ed217af 100644
--- a/addons/procedural_material/nodes/blur.tscn
+++ b/addons/procedural_material/nodes/blur.tscn
@@ -112,10 +112,11 @@ action_mode = 0
 enabled_focus_mode = 2
 shortcut = null
 group = null
+text = "1024"
 flat = false
 align = 0
-items = [  ]
-selected = -1
+items = [ "32", null, false, 0, null, "64", null, false, 1, null, "128", null, false, 2, null, "256", null, false, 3, null, "512", null, false, 4, null, "1024", null, false, 5, null, "2048", null, false, 6, null ]
+selected = 5
 _sections_unfolded = [ "Anchor", "Caret", "Placeholder", "Rect", "Size Flags" ]
 
 [node name="HBoxContainer2" type="HBoxContainer" parent="." index="1"]
@@ -180,11 +181,11 @@ action_mode = 0
 enabled_focus_mode = 2
 shortcut = null
 group = null
-text = "Y"
+text = "Both"
 flat = false
 align = 0
-items = [  ]
-selected = 2
+items = [ "Both", null, false, -1, null, "X", null, false, -1, null, "Y", null, false, -1, null ]
+selected = 0
 _sections_unfolded = [ "Caret", "Placeholder", "Rect", "Size Flags" ]
 
 [node name="HBoxContainer3" type="HBoxContainer" parent="." index="2"]
diff --git a/addons/procedural_material/nodes/bricks.tscn b/addons/procedural_material/nodes/bricks.tscn
index 66f9fb7..57f9c97 100644
--- a/addons/procedural_material/nodes/bricks.tscn
+++ b/addons/procedural_material/nodes/bricks.tscn
@@ -33,7 +33,7 @@ slot/0/left_type = 0
 slot/0/left_color = Color( 0.5, 0.5, 1, 1 )
 slot/0/right_enabled = true
 slot/0/right_type = 0
-slot/0/right_color = Color( 0.5, 0.5, 1, 1 )
+slot/0/right_color = Color( 0.756863, 0.756863, 0.756863, 1 )
 slot/1/left_enabled = false
 slot/1/left_type = 0
 slot/1/left_color = Color( 0.498039, 0.498039, 1, 1 )
@@ -95,10 +95,11 @@ action_mode = 0
 enabled_focus_mode = 2
 shortcut = null
 group = null
+text = "Running bond"
 flat = false
 align = 0
-items = [  ]
-selected = -1
+items = [ "Running bond", null, false, -1, null, "Running bond (2)", null, false, -1, null, "HerringBone", null, false, -1, null, "Basket weave", null, false, -1, null, "Spanish bond", null, false, -1, null ]
+selected = 0
 _sections_unfolded = [ "Size Flags" ]
 
 [node name="HBoxContainer6" type="HBoxContainer" parent="." index="1"]
diff --git a/addons/procedural_material/nodes/colorize.tscn b/addons/procedural_material/nodes/colorize.tscn
index e63ec31..e7297b2 100644
--- a/addons/procedural_material/nodes/colorize.tscn
+++ b/addons/procedural_material/nodes/colorize.tscn
@@ -6,7 +6,7 @@
 [sub_resource type="Theme" id=1]
 
 
-[node name="Colorize" type="GraphNode"]
+[node name="Colorize" type="GraphNode" index="0"]
 
 anchor_left = 0.0
 anchor_top = 0.0
@@ -32,12 +32,12 @@ 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 )
+slot/0/left_color = Color( 0.756863, 0.756863, 0.756863, 1 )
 slot/0/right_enabled = true
 slot/0/right_type = 0
 slot/0/right_color = Color( 0.5, 0.5, 1, 1 )
 script = ExtResource( 1 )
-_sections_unfolded = [ "Theme" ]
+_sections_unfolded = [ "Theme", "slot", "slot/0" ]
 
 [node name="Control" parent="." index="0" instance=ExtResource( 2 )]
 
diff --git a/addons/procedural_material/nodes/combine.tscn b/addons/procedural_material/nodes/combine.tscn
index eec05a8..a06c101 100644
--- a/addons/procedural_material/nodes/combine.tscn
+++ b/addons/procedural_material/nodes/combine.tscn
@@ -31,19 +31,19 @@ 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 )
+slot/0/left_color = Color( 0.756863, 0.756863, 0.756863, 1 )
 slot/0/right_enabled = true
 slot/0/right_type = 0
 slot/0/right_color = Color( 0.5, 0.5, 1, 1 )
 slot/1/left_enabled = true
 slot/1/left_type = 0
-slot/1/left_color = Color( 0.498039, 0.498039, 1, 1 )
+slot/1/left_color = Color( 0.756863, 0.756863, 0.756863, 1 )
 slot/1/right_enabled = false
 slot/1/right_type = 0
 slot/1/right_color = Color( 0.498039, 0.498039, 1, 1 )
 slot/2/left_enabled = true
 slot/2/left_type = 0
-slot/2/left_color = Color( 0.498039, 0.498039, 1, 1 )
+slot/2/left_color = Color( 0.756863, 0.756863, 0.756863, 1 )
 slot/2/right_enabled = false
 slot/2/right_type = 0
 slot/2/right_color = Color( 0.498039, 0.498039, 1, 1 )
diff --git a/addons/procedural_material/nodes/decompose.gd b/addons/procedural_material/nodes/decompose.gd
new file mode 100644
index 0000000..ee13e05
--- /dev/null
+++ b/addons/procedural_material/nodes/decompose.gd
@@ -0,0 +1,21 @@
+tool
+extends "res://addons/procedural_material/node_base.gd"
+
+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)" }
+	if src != null:
+		src_code = src.get_shader_code(uv)
+	if generated_variants.empty():
+		rv.defs = src_code.defs;
+	var variant_index = generated_variants.find(uv)
+	if variant_index == -1:
+		variant_index = generated_variants.size()
+		generated_variants.append(uv)
+		rv.code = src_code.code
+		rv.code += "vec3 %s_%d_rgb = %s;\n" % [ name, variant_index, src_code.rgb ]
+	rv.f = "%s_%d_rgb.%s" % [ name, variant_index, OUTPUTS[output] ]
+	return rv
diff --git a/addons/procedural_material/nodes/decompose.tscn b/addons/procedural_material/nodes/decompose.tscn
new file mode 100644
index 0000000..8530c52
--- /dev/null
+++ b/addons/procedural_material/nodes/decompose.tscn
@@ -0,0 +1,119 @@
+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://addons/procedural_material/nodes/decompose.gd" type="Script" id=1]
+
+[sub_resource type="Theme" id=1]
+
+
+[node name="Decompose" type="GraphNode" index="0"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 204.0
+margin_top = 72.0
+margin_right = 306.0
+margin_bottom = 145.0
+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 = "Decompose"
+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( 0.498039, 0.498039, 1, 1 )
+slot/0/right_enabled = true
+slot/0/right_type = 0
+slot/0/right_color = Color( 0.756863, 0.756863, 0.756863, 1 )
+slot/1/left_enabled = false
+slot/1/left_type = 0
+slot/1/left_color = Color( 0.756863, 0.756863, 0.756863, 1 )
+slot/1/right_enabled = true
+slot/1/right_type = 0
+slot/1/right_color = Color( 0.756863, 0.756863, 0.756863, 1 )
+slot/2/left_enabled = false
+slot/2/left_type = 0
+slot/2/left_color = Color( 0.756863, 0.756863, 0.756863, 1 )
+slot/2/right_enabled = true
+slot/2/right_type = 0
+slot/2/right_color = Color( 0.756863, 0.756863, 0.756863, 1 )
+script = ExtResource( 1 )
+_sections_unfolded = [ "Theme", "slot", "slot/0", "slot/1", "slot/2" ]
+
+[node name="R" type="Label" parent="." index="0"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 16.0
+margin_top = 24.0
+margin_right = 106.0
+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 = "R"
+align = 2
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+[node name="G" type="Label" parent="." index="1"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 16.0
+margin_top = 38.0
+margin_right = 106.0
+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 = "G"
+align = 2
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+[node name="B" type="Label" parent="." index="2"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 16.0
+margin_top = 53.0
+margin_right = 106.0
+margin_bottom = 67.0
+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 = "B"
+align = 2
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+
diff --git a/addons/procedural_material/nodes/emboss.tscn b/addons/procedural_material/nodes/emboss.tscn
index a11b5c3..41e5b7e 100644
--- a/addons/procedural_material/nodes/emboss.tscn
+++ b/addons/procedural_material/nodes/emboss.tscn
@@ -60,7 +60,7 @@ action_mode = 0
 enabled_focus_mode = 2
 shortcut = null
 group = null
-text = "Objet 0"
+text = "N"
 flat = false
 align = 0
 items = [ "N", null, false, 0, null, "NE", null, false, 1, null, "E", null, false, 2, null, "SE", null, false, 3, null, "S", null, false, 4, null, "SW", null, false, 5, null, "W", null, false, 6, null, "NW", null, false, 7, null ]
diff --git a/addons/procedural_material/nodes/material.tscn b/addons/procedural_material/nodes/material.tscn
index 1d06b76..0bdc697 100644
--- a/addons/procedural_material/nodes/material.tscn
+++ b/addons/procedural_material/nodes/material.tscn
@@ -5,7 +5,7 @@
 [sub_resource type="Theme" id=1]
 
 
-[node name="Material" type="GraphNode"]
+[node name="Material" type="GraphNode" index="0"]
 
 anchor_left = 0.0
 anchor_top = 0.0
@@ -35,13 +35,13 @@ slot/0/right_type = 0
 slot/0/right_color = Color( 0.5, 0.5, 1, 1 )
 slot/1/left_enabled = true
 slot/1/left_type = 0
-slot/1/left_color = Color( 0.5, 0.5, 1, 1 )
+slot/1/left_color = Color( 0.756863, 0.756863, 0.756863, 1 )
 slot/1/right_enabled = false
 slot/1/right_type = 0
 slot/1/right_color = Color( 0.5, 0.5, 1, 1 )
 slot/2/left_enabled = true
 slot/2/left_type = 0
-slot/2/left_color = Color( 0.498039, 0.498039, 1, 1 )
+slot/2/left_color = Color( 0.756863, 0.756863, 0.756863, 1 )
 slot/2/right_enabled = false
 slot/2/right_type = 0
 slot/2/right_color = Color( 0.498039, 0.498039, 1, 1 )
@@ -59,7 +59,7 @@ slot/4/right_type = 0
 slot/4/right_color = Color( 0.498039, 0.498039, 1, 1 )
 slot/5/left_enabled = true
 slot/5/left_type = 0
-slot/5/left_color = Color( 0.498039, 0.498039, 1, 1 )
+slot/5/left_color = Color( 0.756863, 0.756863, 0.756863, 1 )
 slot/5/right_enabled = false
 slot/5/right_type = 0
 slot/5/right_color = Color( 0.498039, 0.498039, 1, 1 )
@@ -70,7 +70,7 @@ slot/6/right_enabled = false
 slot/6/right_type = 0
 slot/6/right_color = Color( 0.494118, 0.494118, 1, 1 )
 script = ExtResource( 1 )
-_sections_unfolded = [ "Theme", "slot" ]
+_sections_unfolded = [ "Theme", "slot", "slot/0", "slot/1", "slot/2", "slot/5" ]
 
 [node name="Albedo" type="HBoxContainer" parent="." index="0"]
 
diff --git a/addons/procedural_material/nodes/noise.tscn b/addons/procedural_material/nodes/noise.tscn
index 8971f5c..b766a81 100644
--- a/addons/procedural_material/nodes/noise.tscn
+++ b/addons/procedural_material/nodes/noise.tscn
@@ -31,10 +31,10 @@ comment = false
 overlay = 0
 slot/0/left_enabled = false
 slot/0/left_type = 0
-slot/0/left_color = Color( 0.5, 0.5, 1, 1 )
+slot/0/left_color = Color( 0.756863, 0.756863, 0.756863, 1 )
 slot/0/right_enabled = true
 slot/0/right_type = 0
-slot/0/right_color = Color( 0.5, 0.5, 1, 1 )
+slot/0/right_color = Color( 0.756863, 0.756863, 0.756863, 1 )
 slot/1/left_enabled = false
 slot/1/left_type = 0
 slot/1/left_color = Color( 1, 1, 1, 1 )
@@ -42,7 +42,7 @@ slot/1/right_enabled = false
 slot/1/right_type = 0
 slot/1/right_color = Color( 1, 1, 1, 1 )
 script = ExtResource( 1 )
-_sections_unfolded = [ "Theme" ]
+_sections_unfolded = [ "Theme", "slot", "slot/0" ]
 
 [node name="HBoxContainer1" type="HBoxContainer" parent="." index="0"]
 
@@ -104,11 +104,11 @@ action_mode = 0
 enabled_focus_mode = 2
 shortcut = null
 group = null
-text = "1024"
+text = "512"
 flat = false
 align = 0
 items = [ "32", null, false, 0, null, "64", null, false, 1, null, "128", null, false, 2, null, "256", null, false, 3, null, "512", null, false, 4, null, "1024", null, false, 5, null, "2048", null, false, 6, null ]
-selected = 5
+selected = 4
 _sections_unfolded = [ "Caret", "Placeholder" ]
 
 [node name="HBoxContainer2" type="HBoxContainer" parent="." index="1"]
diff --git a/addons/procedural_material/nodes/normal_map.tscn b/addons/procedural_material/nodes/normal_map.tscn
index 634dac1..7a15d43 100644
--- a/addons/procedural_material/nodes/normal_map.tscn
+++ b/addons/procedural_material/nodes/normal_map.tscn
@@ -31,7 +31,7 @@ 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 )
+slot/0/left_color = Color( 0.756863, 0.756863, 0.756863, 1 )
 slot/0/right_enabled = true
 slot/0/right_type = 0
 slot/0/right_color = Color( 0.5, 0.5, 1, 1 )
diff --git a/addons/procedural_material/nodes/pattern.tscn b/addons/procedural_material/nodes/pattern.tscn
index a510349..ee6186a 100644
--- a/addons/procedural_material/nodes/pattern.tscn
+++ b/addons/procedural_material/nodes/pattern.tscn
@@ -5,7 +5,7 @@
 [sub_resource type="Theme" id=1]
 
 
-[node name="Pattern" type="GraphNode"]
+[node name="Pattern" type="GraphNode" index="0"]
 
 anchor_left = 0.0
 anchor_top = 0.0
@@ -33,7 +33,7 @@ slot/0/left_type = 0
 slot/0/left_color = Color( 0.5, 0.5, 1, 1 )
 slot/0/right_enabled = true
 slot/0/right_type = 0
-slot/0/right_color = Color( 0.5, 0.5, 1, 1 )
+slot/0/right_color = Color( 0.756863, 0.756863, 0.756863, 1 )
 slot/1/left_enabled = false
 slot/1/left_type = 0
 slot/1/left_color = Color( 1, 1, 1, 1 )
@@ -47,7 +47,7 @@ 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" ]
+_sections_unfolded = [ "Theme", "slot", "slot/0" ]
 
 [node name="HBoxContainer0" type="HBoxContainer" parent="." index="0"]
 
diff --git a/addons/procedural_material/nodes/perlin.tscn b/addons/procedural_material/nodes/perlin.tscn
index 92ff09d..a401d4f 100644
--- a/addons/procedural_material/nodes/perlin.tscn
+++ b/addons/procedural_material/nodes/perlin.tscn
@@ -34,9 +34,9 @@ slot/0/left_type = 0
 slot/0/left_color = Color( 0.5, 0.5, 1, 1 )
 slot/0/right_enabled = true
 slot/0/right_type = 0
-slot/0/right_color = Color( 0.5, 0.5, 1, 1 )
+slot/0/right_color = Color( 0.756863, 0.756863, 0.756863, 1 )
 script = ExtResource( 1 )
-_sections_unfolded = [ "Theme" ]
+_sections_unfolded = [ "Theme", "slot", "slot/0" ]
 
 [node name="GridContainer" type="GridContainer" parent="." index="0"]
 
diff --git a/addons/procedural_material/nodes/transform.gd b/addons/procedural_material/nodes/transform.gd
index 98863a7..79b2816 100644
--- a/addons/procedural_material/nodes/transform.gd
+++ b/addons/procedural_material/nodes/transform.gd
@@ -17,16 +17,26 @@ func _get_shader_code(uv):
 	var src = get_source()
 	if src == null:
 		return rv
-	rv.uv = "%s_uv(%s)" % [ name, uv ]
-	var src_code = src.get_shader_code(rv.uv)
-	if !generated:
-		rv.defs = src_code.defs+"vec2 %s_uv(vec2 uv) { return %s(uv, vec2(%.9f, %.9f), %.9f, vec2(%.9f, %.9f)); }\n" % [ name, "transform_repeat" if repeat else "transform_norepeat", translate_x, translate_y, PI*rotate/180.0, scale_x, scale_y ]
-		generated = true
-	rv.code = src_code.code;
-	if src_code.has("f"):
-		rv.f = src_code.f
-	if src_code.has("rgb"):
-		rv.rgb = src_code.rgb
+	var variant_index = generated_variants.find(uv)
+	if variant_index == -1:
+		variant_index = generated_variants.size()
+		generated_variants.append(uv)
+		var inputs = [ "", "", "", "", "" ]
+		for i in range(5):
+			var tsrc = get_source(i+1)
+			if tsrc != null:
+				var tsrc_code = tsrc.get_shader_code(uv)
+				if generated_variants.size() == 1:
+					rv.defs += tsrc_code.defs
+				rv.code += tsrc_code.code
+				inputs[i] = "*(2.0*(%s)-1.0)" % tsrc_code.f
+		rv.code += "vec2 %s_%d_uv = %s(%s, vec2(%.9f%s, %.9f%s), %.9f%s, vec2(%.9f%s, %.9f%s));\n" % [ name, variant_index, "transform_repeat" if repeat else "transform_norepeat", uv, translate_x, inputs[0], translate_y, inputs[1], PI*rotate/180.0, inputs[2], scale_x, inputs[3], scale_y, inputs[4] ]
+	var src_code = src.get_shader_code("%s_%d_uv" % [ name, variant_index ])
+	if rv.code != "":
+		if generated_variants.size() == 1:
+			rv.defs += src_code.defs
+		rv.code += src_code.code
+	rv.rgb = src_code.rgb
 	return rv
 
 func deserialize(data):
diff --git a/addons/procedural_material/nodes/transform.tscn b/addons/procedural_material/nodes/transform.tscn
index f27f469..bf6b4b3 100644
--- a/addons/procedural_material/nodes/transform.tscn
+++ b/addons/procedural_material/nodes/transform.tscn
@@ -35,40 +35,46 @@ slot/0/left_color = Color( 0.5, 0.5, 1, 1 )
 slot/0/right_enabled = true
 slot/0/right_type = 0
 slot/0/right_color = Color( 0.5, 0.5, 1, 1 )
-slot/1/left_enabled = false
+slot/1/left_enabled = true
 slot/1/left_type = 0
-slot/1/left_color = Color( 1, 1, 1, 1 )
+slot/1/left_color = Color( 0.760784, 0.760784, 0.760784, 1 )
 slot/1/right_enabled = false
 slot/1/right_type = 0
 slot/1/right_color = Color( 1, 1, 1, 1 )
-slot/2/left_enabled = false
+slot/2/left_enabled = true
 slot/2/left_type = 0
-slot/2/left_color = Color( 1, 1, 1, 1 )
+slot/2/left_color = Color( 0.760784, 0.760784, 0.760784, 1 )
 slot/2/right_enabled = false
 slot/2/right_type = 0
 slot/2/right_color = Color( 1, 1, 1, 1 )
-slot/3/left_enabled = false
+slot/3/left_enabled = true
 slot/3/left_type = 0
-slot/3/left_color = Color( 1, 1, 1, 1 )
+slot/3/left_color = Color( 0.760784, 0.760784, 0.760784, 1 )
 slot/3/right_enabled = false
 slot/3/right_type = 0
 slot/3/right_color = Color( 1, 1, 1, 1 )
-slot/4/left_enabled = false
+slot/4/left_enabled = true
 slot/4/left_type = 0
-slot/4/left_color = Color( 1, 1, 1, 1 )
+slot/4/left_color = Color( 0.760784, 0.760784, 0.760784, 1 )
 slot/4/right_enabled = false
 slot/4/right_type = 0
 slot/4/right_color = Color( 1, 1, 1, 1 )
-slot/5/left_enabled = false
+slot/5/left_enabled = true
 slot/5/left_type = 0
-slot/5/left_color = Color( 1, 1, 1, 1 )
+slot/5/left_color = Color( 0.761719, 0.761719, 0.761719, 1 )
 slot/5/right_enabled = false
 slot/5/right_type = 0
 slot/5/right_color = Color( 1, 1, 1, 1 )
+slot/6/left_enabled = false
+slot/6/left_type = 0
+slot/6/left_color = Color( 1, 1, 1, 1 )
+slot/6/right_enabled = false
+slot/6/right_type = 0
+slot/6/right_color = Color( 1, 1, 1, 1 )
 script = ExtResource( 1 )
-_sections_unfolded = [ "Theme" ]
+_sections_unfolded = [ "Theme", "slot", "slot/0", "slot/1", "slot/2" ]
 
-[node name="HBoxContainer1" type="HBoxContainer" parent="." index="0"]
+[node name="HBoxContainer0" type="HBoxContainer" parent="." index="0"]
 
 anchor_left = 0.0
 anchor_top = 0.0
@@ -77,7 +83,69 @@ anchor_bottom = 0.0
 margin_left = 16.0
 margin_top = 24.0
 margin_right = 168.0
-margin_bottom = 48.0
+margin_bottom = 44.0
+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
+alignment = 0
+
+[node name="Input" type="Label" parent="HBoxContainer0" index="0"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_right = 74.0
+margin_bottom = 20.0
+rect_min_size = Vector2( 0, 20 )
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 2
+mouse_default_cursor_shape = 0
+size_flags_horizontal = 3
+size_flags_vertical = 4
+text = "Input"
+valign = 1
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+[node name="Output" type="Label" parent="HBoxContainer0" index="1"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 78.0
+margin_right = 152.0
+margin_bottom = 20.0
+rect_min_size = Vector2( 0, 20 )
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 2
+mouse_default_cursor_shape = 0
+size_flags_horizontal = 3
+size_flags_vertical = 4
+text = "Output"
+align = 2
+valign = 1
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+[node name="HBoxContainer1" type="HBoxContainer" parent="." index="1"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 16.0
+margin_top = 44.0
+margin_right = 168.0
+margin_bottom = 68.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
 mouse_filter = 1
@@ -133,16 +201,16 @@ prefix = ""
 suffix = ""
 _sections_unfolded = [ "Caret", "Placeholder", "Rect" ]
 
-[node name="HBoxContainer2" type="HBoxContainer" parent="." index="1"]
+[node name="HBoxContainer2" type="HBoxContainer" parent="." index="2"]
 
 anchor_left = 0.0
 anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
 margin_left = 16.0
-margin_top = 48.0
+margin_top = 69.0
 margin_right = 168.0
-margin_bottom = 72.0
+margin_bottom = 93.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
 mouse_filter = 1
@@ -198,16 +266,16 @@ prefix = ""
 suffix = ""
 _sections_unfolded = [ "Caret", "Placeholder" ]
 
-[node name="HBoxContainer3" type="HBoxContainer" parent="." index="2"]
+[node name="HBoxContainer3" type="HBoxContainer" parent="." index="3"]
 
 anchor_left = 0.0
 anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
 margin_left = 16.0
-margin_top = 73.0
+margin_top = 94.0
 margin_right = 168.0
-margin_bottom = 97.0
+margin_bottom = 118.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
 mouse_filter = 1
@@ -252,8 +320,8 @@ mouse_filter = 0
 mouse_default_cursor_shape = 0
 size_flags_horizontal = 0
 size_flags_vertical = 4
-min_value = 0.0
-max_value = 360.0
+min_value = -720.0
+max_value = 720.0
 step = 5.0
 page = 0.0
 value = 0.0
@@ -264,16 +332,16 @@ prefix = ""
 suffix = ""
 _sections_unfolded = [ "Caret", "Placeholder", "Size Flags" ]
 
-[node name="HBoxContainer4" type="HBoxContainer" parent="." index="3"]
+[node name="HBoxContainer4" type="HBoxContainer" parent="." index="4"]
 
 anchor_left = 0.0
 anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
 margin_left = 16.0
-margin_top = 98.0
+margin_top = 119.0
 margin_right = 168.0
-margin_bottom = 122.0
+margin_bottom = 143.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
 mouse_filter = 1
@@ -330,16 +398,16 @@ prefix = ""
 suffix = ""
 _sections_unfolded = [ "Caret", "Placeholder" ]
 
-[node name="HBoxContainer5" type="HBoxContainer" parent="." index="4"]
+[node name="HBoxContainer5" type="HBoxContainer" parent="." index="5"]
 
 anchor_left = 0.0
 anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
 margin_left = 16.0
-margin_top = 123.0
+margin_top = 144.0
 margin_right = 168.0
-margin_bottom = 147.0
+margin_bottom = 168.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
 mouse_filter = 1
@@ -396,16 +464,16 @@ prefix = ""
 suffix = ""
 _sections_unfolded = [ "Caret", "Placeholder" ]
 
-[node name="repeat" type="CheckBox" parent="." index="5"]
+[node name="repeat" type="CheckBox" parent="." index="6"]
 
 anchor_left = 0.0
 anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
 margin_left = 16.0
-margin_top = 148.0
+margin_top = 169.0
 margin_right = 168.0
-margin_bottom = 172.0
+margin_bottom = 193.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
 focus_mode = 2
diff --git a/addons/procedural_material/nodes/uniform.tscn b/addons/procedural_material/nodes/uniform.tscn
index 88abfbf..82b8ddf 100644
--- a/addons/procedural_material/nodes/uniform.tscn
+++ b/addons/procedural_material/nodes/uniform.tscn
@@ -5,7 +5,7 @@
 [sub_resource type="Theme" id=1]
 
 
-[node name="Uniform" type="GraphNode"]
+[node name="Uniform" type="GraphNode" index="0"]
 
 anchor_left = 0.0
 anchor_top = 0.0
diff --git a/addons/procedural_material/nodes/voronoi.tscn b/addons/procedural_material/nodes/voronoi.tscn
index 87fed95..b23f6f0 100644
--- a/addons/procedural_material/nodes/voronoi.tscn
+++ b/addons/procedural_material/nodes/voronoi.tscn
@@ -34,13 +34,13 @@ slot/0/left_type = 0
 slot/0/left_color = Color( 0.5, 0.5, 1, 1 )
 slot/0/right_enabled = true
 slot/0/right_type = 0
-slot/0/right_color = Color( 0.5, 0.5, 1, 1 )
+slot/0/right_color = Color( 0.756863, 0.756863, 0.756863, 1 )
 slot/1/left_enabled = false
 slot/1/left_type = 0
 slot/1/left_color = Color( 0.498039, 0.498039, 1, 1 )
 slot/1/right_enabled = true
 slot/1/right_type = 0
-slot/1/right_color = Color( 0.498039, 0.498039, 1, 1 )
+slot/1/right_color = Color( 0.756863, 0.756863, 0.756863, 1 )
 slot/2/left_enabled = false
 slot/2/left_type = 0
 slot/2/left_color = Color( 0.498039, 0.498039, 1, 1 )
diff --git a/addons/procedural_material/nodes/warp.gd b/addons/procedural_material/nodes/warp.gd
index ae48d82..ee51328 100644
--- a/addons/procedural_material/nodes/warp.gd
+++ b/addons/procedural_material/nodes/warp.gd
@@ -18,10 +18,10 @@ func _get_shader_code(uv):
 	if variant_index == -1:
 		variant_index = generated_variants.size()
 		generated_variants.append(uv)
-		var src1_code0 = src1.get_shader_code(uv+"+vec2(0.01, 0.0)")
-		var src1_code1 = src1.get_shader_code(uv+"-vec2(0.01, 0.0)")
-		var src1_code2 = src1.get_shader_code(uv+"+vec2(0.0, 0.01)")
-		var src1_code3 = src1.get_shader_code(uv+"-vec2(0.0, 0.01)")
+		var src1_code0 = src1.get_shader_code("fract(%s+vec2(0.01, 0.0))" % uv)
+		var src1_code1 = src1.get_shader_code("fract(%s-vec2(0.01, 0.0))" % uv)
+		var src1_code2 = src1.get_shader_code("fract(%s+vec2(0.0, 0.01))" % uv)
+		var src1_code3 = src1.get_shader_code("fract(%s-vec2(0.0, 0.01))" % uv)
 		rv.defs = src1_code0.defs
 		rv.code = src1_code0.code+src1_code1.code+src1_code2.code+src1_code3.code
 		rv.code += "vec2 %s_%d_uv = %s+%.9f*vec2((%s)-(%s), (%s)-(%s));\n" % [ name, variant_index, uv, amount, src1_code0.f, src1_code1.f, src1_code2.f, src1_code3.f ]
diff --git a/addons/procedural_material/nodes/warp.tscn b/addons/procedural_material/nodes/warp.tscn
index 43d3519..2de7595 100644
--- a/addons/procedural_material/nodes/warp.tscn
+++ b/addons/procedural_material/nodes/warp.tscn
@@ -37,7 +37,7 @@ slot/0/right_type = 0
 slot/0/right_color = Color( 0.5, 0.5, 1, 1 )
 slot/1/left_enabled = true
 slot/1/left_type = 0
-slot/1/left_color = Color( 0.5, 0.5, 1, 1 )
+slot/1/left_color = Color( 0.756863, 0.756863, 0.756863, 1 )
 slot/1/right_enabled = false
 slot/1/right_type = 0
 slot/1/right_color = Color( 0.5, 0.5, 1, 1 )
@@ -48,7 +48,7 @@ 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" ]
+_sections_unfolded = [ "Theme", "slot", "slot/1" ]
 
 [node name="Label1" type="Label" parent="." index="0"]
 
diff --git a/doc/images/node_decompose.png b/doc/images/node_decompose.png
new file mode 100644
index 0000000..9f1a42a
Binary files /dev/null and b/doc/images/node_decompose.png differ
diff --git a/doc/images/node_transform.png b/doc/images/node_transform.png
index 90de06b..a17c97e 100644
Binary files a/doc/images/node_transform.png and b/doc/images/node_transform.png differ
diff --git a/doc/node_combine.rst b/doc/node_combine.rst
index 375ed7b..a10c5ce 100644
--- a/doc/node_combine.rst
+++ b/doc/node_combine.rst
@@ -1,14 +1,14 @@
 Combine node
 ~~~~~~~~~~~~
 
-The combine three greyscale inputs into a color output texture.
+The combine node combines three greyscale inputs into a color output texture.
 
 .. image:: images/node_combine.png
 
 Inputs
 ++++++
 
-The combine node has 3 inputs, one for each (read, green and blue) channel.
+The combine node has 3 inputs, one for each (red, green and blue) channel.
 
 Outputs
 +++++++
diff --git a/doc/node_decompose.rst b/doc/node_decompose.rst
new file mode 100644
index 0000000..486856a
--- /dev/null
+++ b/doc/node_decompose.rst
@@ -0,0 +1,16 @@
+Decompose node
+~~~~~~~~~~~~~~
+
+The decompose node decomposes a color input into three greyscale outputs.
+
+.. image:: images/node_decompose.png
+
+Inputs
+++++++
+
+The decompose node has a single color input.
+
+Outputs
++++++++
+
+The decompose node outputs 3 greyscale images, one for each (red, green and blue) channel.
\ No newline at end of file
diff --git a/doc/node_transform.rst b/doc/node_transform.rst
index 7ab094b..4e08ffd 100644
--- a/doc/node_transform.rst
+++ b/doc/node_transform.rst
@@ -8,7 +8,13 @@ The transform node applies a scale operation, a rotation and a translation to th
 Inputs
 ++++++
 
-The transform node accepts a single image as input.
+The transform node accepts a color image as input.
+
+It also accepts a greyscale input image for each transform parameter. In that case,
+instead of applying a uniform transform to the input image, the transform parameter
+will, for each pixel, be multiplied by a value from -1 to 1 that depends linearly
+on the corresponding greyscale input image (a black pixel will multiply the parameter
+by -1, a white pixel will not change the parameter, a grey50 pixel will set it to 0).
 
 Outputs
 +++++++
diff --git a/doc/nodes_filters.rst b/doc/nodes_filters.rst
index ab7182c..247499c 100644
--- a/doc/nodes_filters.rst
+++ b/doc/nodes_filters.rst
@@ -9,6 +9,7 @@ The generator nodes are nodes that do not accept any input and generate one or s
 	node_blend
 	node_blur
 	node_combine
+	node_decompose
 	node_emboss
 	node_normal_map
 	node_transform
diff --git a/examples/bricks.ptex b/examples/bricks.ptex
index 8f37b4f..79df2ec 100644
--- a/examples/bricks.ptex
+++ b/examples/bricks.ptex
@@ -1 +1 @@
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