diff --git a/.gitignore b/.gitignore
index fa242d7..3fe36e8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,5 @@ addons/procedural_material/models/Material.material
 addons/procedural_material/models/models.blend1
 addons/procedural_material/models/models.dae
 addons/procedural_material/models/models.dae.import
+/examples/*.png
+/examples/*.import
diff --git a/addons/procedural_material/shader_header.txt b/addons/procedural_material/common.shader
similarity index 100%
rename from addons/procedural_material/shader_header.txt
rename to addons/procedural_material/common.shader
diff --git a/addons/procedural_material/graph_edit.gd b/addons/procedural_material/graph_edit.gd
index 6d89dfa..548a8ed 100644
--- a/addons/procedural_material/graph_edit.gd
+++ b/addons/procedural_material/graph_edit.gd
@@ -28,17 +28,39 @@ func remove_node(node):
 	node.queue_free()
 	send_changed_signal()
 
+func _on_GraphEdit_connection_request(from, from_slot, to, to_slot):
+	var disconnect = get_source(to, to_slot)
+	if disconnect != null:
+		disconnect_node(disconnect.node, disconnect.slot, to, to_slot)
+	connect_node(from, from_slot, to, to_slot)
+	send_changed_signal();
+
+func _on_GraphEdit_disconnection_request(from, from_slot, to, to_slot):
+	disconnect_node(from, from_slot, to, to_slot)
+	send_changed_signal();
+
+func clear_material():
+	clear_connections()
+	for c in get_children():
+		if c is GraphNode:
+			remove_child(c)
+			c.free()
+
+func new_material():
+	clear_material()
+	var node_type = load("res://addons/procedural_material/nodes/material.tscn")
+	if node_type != null:
+		var node = node_type.instance()
+		add_node(node)
+	do_send_changed_signal()
+
 func load_file(filename):
 	var file = File.new()
 	if file.open(filename, File.READ) != OK:
 		return
 	var data = parse_json(file.get_as_text())
 	file.close()
-	clear_connections()
-	for c in get_children():
-		if c is GraphNode:
-			remove_child(c)
-			c.free()
+	clear_material()
 	for n in data.nodes:
 		if !n.has("type"):
 			continue
@@ -70,14 +92,10 @@ func do_send_changed_signal():
 	emit_signal("graph_changed")
 
 func generate_shader(node):
-	var shader_type = 0
 	var code
-	if shader_type == 1:
-		code = "shader_type spatial;\n\n"
-	else:
-		code = "shader_type canvas_item;\n\n"
+	code = "shader_type canvas_item;\n\n"
 	var file = File.new()
-	file.open("res://addons/procedural_material/shader_header.txt", File.READ)
+	file.open("res://addons/procedural_material/common.shader", File.READ)
 	code += file.get_as_text()
 	code += "\n"
 	for c in get_children():
@@ -88,18 +106,12 @@ func generate_shader(node):
 	var shader_code = src_code.defs
 	shader_code += "void fragment() {\n"
 	shader_code += src_code.code
-	if shader_type == 1:
-		if src_code.has("albedo"):
-			shader_code += "ALBEDO = "+src_code.albedo+";\n"
-		if src_code.has("normal_map"):
-			shader_code += "NORMALMAP = "+src_code.normal_map+";\n"
+	if src_code.has("rgb"):
+		shader_code += "COLOR = vec4("+src_code.rgb+", 1.0);\n"
+	elif src_code.has("f"):
+		shader_code += "COLOR = vec4(vec3("+src_code.f+"), 1.0);\n"
 	else:
-		if src_code.has("rgb"):
-			shader_code += "COLOR = vec4("+src_code.rgb+", 1.0);\n"
-		elif src_code.has("f"):
-			shader_code += "COLOR = vec4(vec3("+src_code.f+"), 1.0);\n"
-		else:
-			shader_code += "COLOR = vec4(1.0);\n"
+		shader_code += "COLOR = vec4(1.0);\n"
 	shader_code += "}\n"
 	#print("GENERATED SHADER:\n"+shader_code)
 	code += shader_code
@@ -110,39 +122,49 @@ func setup_material(shader_material, textures, shader_code):
 		shader_material.set_shader_param(k+"_tex", textures[k])
 	shader_material.shader.code = shader_code
 
+# Save shader to image
+
+var render_queue = []
+
+func render_to_viewport(node, size, method, args):
+	render_queue.append( { shader=generate_shader(node), textures=node.get_textures(), size=size, method=method, args=args } )
+	if render_queue.size() == 1:
+		while !render_queue.empty():
+			var job = render_queue.front()
+			$SaveViewport.size = Vector2(job.size, job.size)
+			$SaveViewport/ColorRect.rect_position = Vector2(0, 0)
+			$SaveViewport/ColorRect.rect_size = Vector2(job.size, job.size)
+			var shader_material = $SaveViewport/ColorRect.material
+			shader_material.shader.code = job.shader
+			for k in job.textures.keys():
+				shader_material.set_shader_param(k+"_tex", job.textures[k])
+			$SaveViewport.render_target_update_mode = Viewport.UPDATE_ONCE
+			$SaveViewport.update_worlds()
+			yield(get_tree(), "idle_frame")
+			yield(get_tree(), "idle_frame")
+			yield(get_tree(), "idle_frame")
+			callv(job.method, job.args)
+			render_queue.pop_front()
+
 func export_texture(node, filename, size = 256):
-	if node != null:
-		$SaveViewport.size = Vector2(size, size)
-		$SaveViewport/ColorRect.rect_position = Vector2(0, 0)
-		$SaveViewport/ColorRect.rect_size = Vector2(size, size)
-		setup_material($SaveViewport/ColorRect.material, node.get_textures(), generate_shader(node))
-		$SaveViewport.render_target_update_mode = Viewport.UPDATE_ONCE
-		$SaveViewport.update_worlds()
-		$SaveViewport/Timer.start()
-		yield($SaveViewport/Timer, "timeout")
-		yield(get_tree(), "idle_frame")
-		var viewport_texture = $SaveViewport.get_texture()
-		var viewport_image = viewport_texture.get_data()
-		viewport_image.save_png("res://generated_image.png")
+	if node == null:
+		return null
+	render_to_viewport(node, size, "do_export_texture", [ filename ])
+
+func do_export_texture(filename):
+	var viewport_texture = $SaveViewport.get_texture()
+	var viewport_image = viewport_texture.get_data()
+	viewport_image.save_png(filename)
 
 func precalculate_texture(node, size, object, method, args):
 	if node == null:
 		return null
-	$SaveViewport.size = Vector2(size, size)
-	$SaveViewport/ColorRect.rect_position = Vector2(0, 0)
-	$SaveViewport/ColorRect.rect_size = Vector2(size, size)
-	setup_material($SaveViewport/ColorRect.material, node.get_textures(), generate_shader(node))
-	$SaveViewport.render_target_update_mode = Viewport.UPDATE_ONCE
-	$SaveViewport.update_worlds()
-	$SaveViewport/Timer.start()
-	yield($SaveViewport/Timer, "timeout")
-	yield(get_tree(), "idle_frame")
+	render_to_viewport(node, size, "do_precalculate_texture", [ object, method, args ])
+
+func do_precalculate_texture(object, method, args):
 	var viewport_texture = $SaveViewport.get_texture()
 	var texture = ImageTexture.new()
 	texture.create_from_image(viewport_texture.get_data())
 	args.append(texture)
 	object.callv(method, args)
 
-func _on_ColorRect_draw():
-	print("drawn")
-	
diff --git a/addons/procedural_material/node_base.gd b/addons/procedural_material/node_base.gd
index 32b504d..8f53771 100644
--- a/addons/procedural_material/node_base.gd
+++ b/addons/procedural_material/node_base.gd
@@ -130,6 +130,7 @@ func deserialize(data):
 	offset = Vector2(data.node_position.x, data.node_position.y)
 	for w in property_widgets:
 		var variable = w.name
-		var value = deserialize_element(data[variable])
-		set(variable, value)
+		if data.has(variable):
+			var value = deserialize_element(data[variable])
+			set(variable, value)
 	update_property_widgets()
diff --git a/addons/procedural_material/nodes/material.gd b/addons/procedural_material/nodes/material.gd
index 5c5488a..2608c0b 100644
--- a/addons/procedural_material/nodes/material.gd
+++ b/addons/procedural_material/nodes/material.gd
@@ -8,8 +8,14 @@ var texture_emission   = null
 var texture_normal_map = null
 var texture_depth_map  = null
 
-var render_queue = []   # render queue for generated textures
-var material_list = []  # materials to be updatedwith generated textures
+const TEXTURE_LIST = [
+		{ port= 0, texture= "albedo" },
+		{ port= 1, texture= "metallic" },
+		{ port= 2, texture= "roughness" },
+		{ port= 3, texture= "emission" },
+		{ port= 4, texture= "normal_map" },
+		{ port= 5, texture= "depth_map" }
+]
 
 func _ready():
 	pass
@@ -31,34 +37,16 @@ func _get_shader_code(uv):
 func _get_state_variables():
 	return [ ]
 
-func update_materials(ml):
-	material_list = ml
-	render_queue = [
-		{ port= 0, texture= "albedo" },
-		{ port= 1, texture= "metallic" },
-		{ port= 2, texture= "roughness" },
-		{ port= 3, texture= "emission" },
-		{ port= 4, texture= "normal_map" },
-		{ port= 5, texture= "depth_map" }
-	]
-	process_render_queue()
-
-func process_render_queue():
-	while !render_queue.empty():
-		var job = render_queue.pop_front()
-		var source = get_source(job.port)
-		if source != null:
-			get_parent().precalculate_texture(source, 1024, self, "store_texture", [ job.texture ])
-			return
+func update_materials(material_list):
+	for t in TEXTURE_LIST:
+		var source = get_source(t.port)
+		if source == null:
+			set("texture_"+t.texture, null)
 		else:
-			set("texture_"+job.texture, null)
-	do_update_materials()
+			get_parent().precalculate_texture(source, 1024, self, "store_texture", [ t.texture, material_list ])
 
-func store_texture(texture_name, texture):
+func store_texture(texture_name, material_list, texture):
 	set("texture_"+texture_name, texture)
-	process_render_queue()
-
-func do_update_materials():
 	for m in material_list:
 		if m is SpatialMaterial:
 			m.albedo_texture = texture_albedo
@@ -80,3 +68,6 @@ func do_update_materials():
 			else:
 				m.depth_enabled = false
 
+func export_textures(prefix):
+	for t in TEXTURE_LIST:
+		get_parent().export_texture(get_source(t.port), prefix+"_"+t.texture+".png", 1024)
diff --git a/addons/procedural_material/nodes/normal_map.gd b/addons/procedural_material/nodes/normal_map.gd
index 798c07b..ec84237 100644
--- a/addons/procedural_material/nodes/normal_map.gd
+++ b/addons/procedural_material/nodes/normal_map.gd
@@ -29,6 +29,6 @@ func _get_shader_code(uv):
 		rv.defs = src_code_tl.defs
 		rv.code = src_code_tl.code+src_code_l.code+src_code_bl.code+src_code_tr.code
 		rv.code += src_code_r.code+src_code_br.code+src_code_t.code+src_code_b.code
-		rv.code += "vec3 %s_%d_rgb = vec3(0.5, 0.5, 0.5) + 0.5*normalize(%.9f*vec3(%s+2.0*%s+%s-%s-2.0*%s-%s, %s+2.0*%s+%s-%s-2.0*%s-%s, 0.0) + vec3(0.0, 0.0, 1.0));\n" % [ name, variant_index, amount, src_code_tr.f, src_code_r.f, src_code_br.f, src_code_tl.f, src_code_l.f, src_code_bl.f, src_code_bl.f, src_code_b.f, src_code_br.f, src_code_tl.f, src_code_t.f, src_code_tr.f ]
+		rv.code += "vec3 %s_%d_rgb = vec3(0.5, 0.5, 0.5) + 0.5*normalize(%.9f*vec3(%s+2.0*%s+%s-%s-2.0*%s-%s, %s+2.0*%s+%s-%s-2.0*%s-%s, 0.0) + vec3(0.0, 0.0, -1.0));\n" % [ name, variant_index, amount, src_code_tr.f, src_code_r.f, src_code_br.f, src_code_tl.f, src_code_l.f, src_code_bl.f, src_code_bl.f, src_code_b.f, src_code_br.f, src_code_tl.f, src_code_t.f, src_code_tr.f ]
 	rv.rgb = name+"_"+str(variant_index)+"_rgb"
 	return rv
diff --git a/addons/procedural_material/nodes/normal_map.tscn b/addons/procedural_material/nodes/normal_map.tscn
index 3610135..68fd50d 100644
--- a/addons/procedural_material/nodes/normal_map.tscn
+++ b/addons/procedural_material/nodes/normal_map.tscn
@@ -5,7 +5,7 @@
 [sub_resource type="Theme" id=1]
 
 
-[node name="NormalMap" type="GraphNode" index="0"]
+[node name="NormalMap" type="GraphNode"]
 
 anchor_left = 0.0
 anchor_top = 0.0
diff --git a/addons/procedural_material/pm_editor.gd b/addons/procedural_material/pm_editor.gd
index 9eea767..8caa06c 100644
--- a/addons/procedural_material/pm_editor.gd
+++ b/addons/procedural_material/pm_editor.gd
@@ -1,6 +1,8 @@
 tool
 extends Container
 
+var save_path = null
+
 var popup_menu = null
 var popup_position = Vector2(0, 0)
 var selected_node = null
@@ -8,9 +10,11 @@ var selected_node = null
 var texture_preview_material = null
 
 const MENU = [
-	{ command="load_texture", description="Load texture" },
-	{ command="save_texture", description="Save texture" },
-	{ command="export_texture", description="Export texture" },
+	{ command="new_texture", description="New material" },
+	{ command="load_texture", description="Load material" },
+	{ command="save_texture", description="Save material" },
+	{ command="save_texture_as", description="Save material as..." },
+	{ command="export_texture", description="Export material" },
 	{ },
 	{ submenu="generator", description="Generator" },
 	{ name="image", description="Image", in_submenu="generator" },
@@ -78,35 +82,57 @@ func _on_PopupMenu_id_pressed(id):
 			$GraphEdit.add_node(node, popup_position)
 			node.offset = ($GraphEdit.scroll_offset + popup_position - $GraphEdit.rect_global_position) / $GraphEdit.zoom
 
-func _on_GraphEdit_connection_request(from, from_slot, to, to_slot):
-	var disconnect = $GraphEdit.get_source(to, to_slot)
-	if disconnect != null:
-		$GraphEdit.disconnect_node(disconnect.node, disconnect.slot, to, to_slot)
-	$GraphEdit.connect_node(from, from_slot, to, to_slot)
-	generate_shader();
+func set_save_path(path):
+	save_path = path
+	if !Engine.editor_hint:
+		if save_path != null:
+			OS.set_window_title("Procedural textures (%s)" % save_path)
+		else:
+			OS.set_window_title("Procedural textures")
+
+func new_texture():
+	$GraphEdit.new_material()
+	set_save_path(null)
 
 func load_texture():
+	selected_node = null
 	var dialog = FileDialog.new()
 	add_child(dialog)
 	dialog.rect_min_size = Vector2(500, 500)
 	dialog.access = FileDialog.ACCESS_FILESYSTEM
 	dialog.mode = FileDialog.MODE_OPEN_FILE
 	dialog.add_filter("*.ptex;Procedural textures file")
-	dialog.connect("file_selected", $GraphEdit, "load_file")
+	dialog.connect("file_selected", self, "do_load_texture")
 	dialog.popup_centered()
 
+func do_load_texture(path):
+	set_save_path(path)
+	$GraphEdit.load_file(save_path)
+
 func save_texture():
+	if save_path != null:
+		$GraphEdit.save_file(save_path)
+	else:
+		save_texture_as()
+	
+func save_texture_as():
 	var dialog = FileDialog.new()
 	add_child(dialog)
 	dialog.rect_min_size = Vector2(500, 500)
 	dialog.access = FileDialog.ACCESS_FILESYSTEM
 	dialog.mode = FileDialog.MODE_SAVE_FILE
 	dialog.add_filter("*.ptex;Procedural textures file")
-	dialog.connect("file_selected", $GraphEdit, "save_file")
+	dialog.connect("file_selected", self, "do_save_texture")
 	dialog.popup_centered()
 
-func export_texture(size = 256):
-	$GraphEdit.export_texture(selected_node, "res://generated_image.png", size)
+func do_save_texture(path):
+	set_save_path(path)
+	$GraphEdit.save_file(save_path)
+
+func export_texture(size = 512):
+	#$GraphEdit.export_texture(selected_node, "res://generated_image.png", size)
+	var prefix = save_path.left(save_path.rfind("."))
+	$GraphEdit/Material.export_textures(prefix)
 
 func generate_shader():
 	if $GraphEdit/Material != null:
diff --git a/addons/procedural_material/pm_editor.tscn b/addons/procedural_material/pm_editor.tscn
index eb7fcf4..f4c29bf 100644
--- a/addons/procedural_material/pm_editor.tscn
+++ b/addons/procedural_material/pm_editor.tscn
@@ -25,6 +25,47 @@ vec3 rand3(vec2 x) {
                           dot(x, vec2(13.254, 5.867)))) * 43758.5453);
 }
 
+float wave_sin(float x) {
+	return 0.5-0.5*cos(3.1415928*2.0*x);
+}
+
+float wave_saw(float x) {
+	x = fract(x);
+	return min(2.0*x, 2.0-2.0*x);
+}
+
+float wave_square(float x) {
+	return (fract(x) < 0.5) ? 0.0 : 1.0;
+}
+
+float mix_multiply(float x, float y) {
+	return x*y;
+}
+
+float mix_add(float x, float y) {
+	return min(x+y, 1.0);
+}
+
+float mix_max(float x, float y) {
+	return max(x, y);
+}
+
+float mix_min(float x, float y) {
+	return min(x, y);
+}
+
+float mix_min(float x, float y) {
+	return min(x, y);
+}
+
+float mix_xor(float x, float y) {
+	return min(x+y, 2.0-x-y);
+}
+
+float mix_pow(float x, float y) {
+	return pow(x, y);
+}
+
 vec3 blend_normal(vec2 uv, vec3 c1, vec3 c2, float opacity) {
 	return opacity*c1 + (1.0-opacity)*c2;
 }
@@ -89,17 +130,14 @@ vec3 blend_darken(vec2 uv, vec3 c1, vec3 c2, float opacity) {
 	return opacity*min(c1, c2) + (1.0-opacity)*c2;
 }
 
-float sine(vec2 uv, float count, float sharpness) {
-	return clamp(0.5+sharpness*0.5*sin(count*3.1415928*2.0*uv.x), 0.0, 1.0);
-}
-
-vec2 transform(vec2 uv, float rotate, float scale) {
+vec2 transform(vec2 uv, vec2 translate, float rotate, float scale) {
 	vec2 rv;
 	uv -= vec2(0.5);
 	rv.x = cos(rotate)*uv.x + sin(rotate)*uv.y;
 	rv.y = -sin(rotate)*uv.x + cos(rotate)*uv.y;
 	rv /= scale;
 	rv += vec2(0.5);
+	rv -= translate;
 	return rv;
 }
 
@@ -176,23 +214,27 @@ vec4 voronoi(vec2 uv, vec2 size, float intensity, int seed) {
     return vec4(point0, best_distance0*length(size)*intensity, edge_distance);
 }
 
-float bricks_0_f(vec2 uv) { return bricks(uv, vec2(5, 1), 0.5, 0.05, 0.001); }
-float perlin_0_f(vec2 uv) { return perlin(uv, vec2(20.000000, 3.000000), 3, 0.500000000, 1161); }
+float Perlin_f(vec2 uv) { return perlin(uv, vec2(4.000000, 4.000000), 6, 0.500000000, 2375); }
+float Bricks_f(vec2 uv) { return bricks(uv, vec2(3, 6), 0.5, 0.05, 0.2); }
+vec3 colorize_3_gradient(float x) {
+  if (x < 0.000000000) {
+    return vec3(0.273438007,0.273438007,0.273438007);
+  } else if (x < 1.000000000) {
+    return vec3(0.273438007,0.273438007,0.273438007)+x*vec3(-0.273438007,-0.273438007,-0.273438007);
+  }
+  return vec3(0.000000000,0.000000000,0.000000000);
+}
 void fragment() {
-float bricks_0_0_f = bricks_0_f(UV+vec2(0.01, 0.0));
-float perlin_0_0_f = perlin_0_f(UV+vec2(0.01, 0.0));
-vec3 blend_0_0_rgb = blend_multiply(UV+vec2(0.01, 0.0), vec3(bricks_0_0_f), vec3(perlin_0_0_f), 1.000000000);
-float bricks_0_1_f = bricks_0_f(UV+vec2(-0.01, 0.0));
-float perlin_0_1_f = perlin_0_f(UV+vec2(-0.01, 0.0));
-vec3 blend_0_1_rgb = blend_multiply(UV+vec2(-0.01, 0.0), vec3(bricks_0_1_f), vec3(perlin_0_1_f), 1.000000000);
-float bricks_0_2_f = bricks_0_f(UV+vec2(0.0, 0.01));
-float perlin_0_2_f = perlin_0_f(UV+vec2(0.0, 0.01));
-vec3 blend_0_2_rgb = blend_multiply(UV+vec2(0.0, 0.01), vec3(bricks_0_2_f), vec3(perlin_0_2_f), 1.000000000);
-float bricks_0_3_f = bricks_0_f(UV+vec2(0.0, -0.01));
-float perlin_0_3_f = perlin_0_f(UV+vec2(0.0, -0.01));
-vec3 blend_0_3_rgb = blend_multiply(UV+vec2(0.0, -0.01), vec3(bricks_0_3_f), vec3(perlin_0_3_f), 1.000000000);
-vec3 normal_map_0_0_rgb = vec3(0.5, 0.5, 0.5) + 0.5*normalize(0.5*vec3(dot(blend_0_0_rgb, vec3(1.0))/3.0-dot(blend_0_1_rgb, vec3(1.0))/3.0, dot(blend_0_2_rgb, vec3(1.0))/3.0-dot(blend_0_3_rgb, vec3(1.0))/3.0, 0.0) + vec3(0.0, 0.0, 1.0));
-COLOR = vec4(normal_map_0_0_rgb, 1.0);
+float Perlin_0_f = Perlin_f(UV+vec2(0.01, 0.0));
+float Perlin_1_f = Perlin_f(UV-vec2(0.01, 0.0));
+float Perlin_2_f = Perlin_f(UV+vec2(0.0, 0.01));
+float Perlin_3_f = Perlin_f(UV-vec2(0.0, 0.01));
+vec2 Warp_0_uv = UV+0.100000001*vec2((Perlin_0_f)-(Perlin_1_f), (Perlin_2_f)-(Perlin_3_f));
+float Bricks_0_f = Bricks_f(Warp_0_uv);
+vec3 Warp_0_rgb = vec3(Bricks_0_f);
+float Warp_0_f = dot(vec3(Bricks_0_f), vec3(1.0))/3.0;
+vec3 colorize_3_0_rgb = colorize_3_gradient(Warp_0_f);
+COLOR = vec4(colorize_3_0_rgb, 1.0);
 }
 "
 
@@ -423,7 +465,7 @@ tracks/0/keys = {
 "times": PoolRealArray( 0, 0.2 ),
 "transitions": PoolRealArray( 1, 1 ),
 "update": 0,
-"values": [ Vector2( 2, 194 ), Vector2( 2, 2 ) ]
+"values": [ Vector2( 3, 251 ), Vector2( 2, 2 ) ]
 }
 tracks/1/type = "value"
 tracks/1/path = NodePath("SelectedPreview:rect_size")
@@ -435,7 +477,7 @@ tracks/1/keys = {
 "times": PoolRealArray( 0, 0.2 ),
 "transitions": PoolRealArray( 1, 1 ),
 "update": 0,
-"values": [ Vector2( 64, 64 ), Vector2( 256, 256 ) ]
+"values": [ Vector2( 96, 96 ), Vector2( 346, 346 ) ]
 }
 tracks/2/type = "value"
 tracks/2/path = NodePath("MaterialPreview:render_target_update_mode")
@@ -465,7 +507,7 @@ tracks/0/keys = {
 "times": PoolRealArray( 0, 0.2 ),
 "transitions": PoolRealArray( 1, 1 ),
 "update": 0,
-"values": [ Vector2( 2, 2 ), Vector2( 2, 194 ) ]
+"values": [ Vector2( 2, 2 ), Vector2( 2, 252 ) ]
 }
 tracks/1/type = "value"
 tracks/1/path = NodePath("SelectedPreview:rect_size")
@@ -477,7 +519,7 @@ tracks/1/keys = {
 "times": PoolRealArray( 0, 0.2 ),
 "transitions": PoolRealArray( 1, 1 ),
 "update": 0,
-"values": [ Vector2( 256, 256 ), Vector2( 64, 64 ) ]
+"values": [ Vector2( 346, 346 ), Vector2( 96, 96 ) ]
 }
 tracks/2/type = "value"
 tracks/2/path = NodePath("MaterialPreview:render_target_update_mode")
@@ -517,8 +559,8 @@ anchor_left = 0.0
 anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
-margin_right = 1024.0
-margin_bottom = 598.0
+margin_right = 1280.0
+margin_bottom = 718.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = true
 focus_mode = 2
@@ -549,13 +591,14 @@ autostart = false
 
 [node name="SaveViewport" type="Viewport" parent="GraphEdit" index="2"]
 
+editor/display_folded = true
 arvr = false
 size = Vector2( 0, 0 )
 own_world = true
 world = null
 transparent_bg = false
-msaa = 0
-hdr = true
+msaa = 2
+hdr = false
 disable_3d = false
 usage = 2
 debug_draw = 0
@@ -605,8 +648,8 @@ anchor_left = 0.0
 anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
-margin_right = 1024.0
-margin_bottom = 598.0
+margin_right = 1280.0
+margin_bottom = 718.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
 mouse_filter = 2
@@ -621,11 +664,11 @@ anchor_left = 1.0
 anchor_top = 0.0
 anchor_right = 1.0
 anchor_bottom = 0.0
-margin_left = -274.0
+margin_left = -364.0
 margin_top = 3.0
 margin_right = -14.0
-margin_bottom = 263.0
-rect_min_size = Vector2( 260, 260 )
+margin_bottom = 353.0
+rect_min_size = Vector2( 350, 350 )
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
 mouse_filter = 2
@@ -651,7 +694,7 @@ _sections_unfolded = [ "Playback Options" ]
 [node name="MaterialPreview" type="Viewport" parent="Preview/Preview" index="1"]
 
 arvr = false
-size = Vector2( 260, 260 )
+size = Vector2( 350, 350 )
 own_world = true
 world = null
 transparent_bg = false
@@ -677,7 +720,7 @@ _sections_unfolded = [ "GUI", "Render Target" ]
 
 [node name="Objects" type="Spatial" parent="Preview/Preview/MaterialPreview" index="0"]
 
-transform = Transform( -0.822992, 0, -0.568049, 0, 1, 0, 0.568049, 0, -0.822992, 0, 0, 0 )
+transform = Transform( -0.730986, 0, -0.682388, 0, 1, 0, 0.682388, 0, -0.730986, 0, 0, 0 )
 _sections_unfolded = [ "Transform" ]
 
 [node name="Cube" type="MeshInstance" parent="Preview/Preview/MaterialPreview/Objects" index="0"]
@@ -763,9 +806,9 @@ anchor_left = 1.0
 anchor_top = 0.0
 anchor_right = 1.0
 anchor_bottom = 0.0
-margin_left = -258.0
+margin_left = -348.0
 margin_top = 2.0
-margin_right = -148.0
+margin_right = -238.0
 margin_bottom = 22.0
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
@@ -821,10 +864,10 @@ anchor_top = 0.0
 anchor_right = 0.0
 anchor_bottom = 0.0
 margin_left = 2.0
-margin_top = 194.0
-margin_right = 66.0
-margin_bottom = 258.0
-rect_min_size = Vector2( 64, 64 )
+margin_top = 252.0
+margin_right = 98.0
+margin_bottom = 348.0
+rect_min_size = Vector2( 96, 96 )
 rect_pivot_offset = Vector2( 0, 0 )
 rect_clip_content = false
 mouse_filter = 0
@@ -832,7 +875,7 @@ mouse_default_cursor_shape = 0
 size_flags_horizontal = 8
 size_flags_vertical = 0
 color = Color( 1, 1, 1, 1 )
-_sections_unfolded = [ "Material", "Mouse" ]
+_sections_unfolded = [ "Material", "Mouse", "Rect" ]
 
 [node name="SelectedPreviewAnimation" type="AnimationPlayer" parent="Preview/Preview" index="5"]
 
@@ -845,7 +888,9 @@ anims/maximize = SubResource( 11 )
 anims/minimize = SubResource( 12 )
 blend_times = [  ]
 
-[connection signal="connection_request" from="GraphEdit" to="." method="_on_GraphEdit_connection_request"]
+[connection signal="connection_request" from="GraphEdit" to="GraphEdit" method="_on_GraphEdit_connection_request"]
+
+[connection signal="disconnection_request" from="GraphEdit" to="GraphEdit" method="_on_GraphEdit_disconnection_request"]
 
 [connection signal="graph_changed" from="GraphEdit" to="." method="generate_shader"]
 
diff --git a/doc/screenshot.png b/doc/screenshot.png
index 48d8c18..1b0d348 100644
Binary files a/doc/screenshot.png and b/doc/screenshot.png differ
diff --git a/examples/bricks.ptex b/examples/bricks.ptex
index ee8ab58..53226e7 100644
--- a/examples/bricks.ptex
+++ b/examples/bricks.ptex
@@ -1 +1 @@
-{"connections":[{"from":"Bricks","from_port":0,"to":"Warp","to_port":0},{"from":"Perlin","from_port":0,"to":"Warp","to_port":1},{"from":"Perlin2","from_port":0,"to":"colorize_0","to_port":0},{"from":"Perlin2","from_port":0,"to":"colorize_1","to_port":0},{"from":"Warp","from_port":0,"to":"colorize_2","to_port":0},{"from":"colorize_2","from_port":0,"to":"blend_0","to_port":2},{"from":"colorize_1","from_port":0,"to":"blend_0","to_port":0},{"from":"colorize_0","from_port":0,"to":"blend_0","to_port":1},{"from":"Warp","from_port":0,"to":"colorize_3","to_port":0},{"from":"blend_0","from_port":0,"to":"Material","to_port":0},{"from":"Warp","from_port":0,"to":"normal_map_0","to_port":0},{"from":"normal_map_0","from_port":0,"to":"Material","to_port":4},{"from":"colorize_3","from_port":0,"to":"Material","to_port":5},{"from":"colorize_2","from_port":0,"to":"colorize_4","to_port":0},{"from":"colorize_4","from_port":0,"to":"Material","to_port":2},{"from":"colorize_2","from_port":0,"to":"colorize_5","to_port":0},{"from":"colorize_5","from_port":0,"to":"Material","to_port":1}],"nodes":[{"bevel":0.2,"columns":3,"mortar":0.05,"name":"Bricks","node_position":{"x":260,"y":132},"row_offset":0.5,"rows":6,"type":"bricks"},{"iterations":6,"name":"Perlin","node_position":{"x":255,"y":322},"persistence":0.5,"scale_x":4,"scale_y":4,"type":"perlin"},{"amount":0.1,"name":"Warp","node_position":{"x":504,"y":199.75},"type":"warp"},{"gradient":[{"b":0,"g":0,"pos":0,"r":0},{"b":1,"g":1,"pos":1,"r":1}],"name":"colorize_0","node_position":{"x":560.943665,"y":50},"type":"colorize"},{"gradient":[{"b":0.002889,"g":0.102424,"pos":0,"r":0.184896},{"b":0,"g":0.19869,"pos":0.327273,"r":0.669271},{"b":0.019368,"g":0.060224,"pos":0.654545,"r":0.309896},{"b":0,"g":0.180135,"pos":1,"r":0.606771}],"name":"colorize_1","node_position":{"x":562.943665,"y":-65},"type":"colorize"},{"amount":0.5,"blend_type":0,"name":"blend_0","node_position":{"x":820.943726,"y":-33},"type":"blend"},{"name":"Material","node_position":{"x":1024,"y":204},"type":"material"},{"iterations":7,"name":"Perlin2","node_position":{"x":253,"y":-28},"persistence":0.5,"scale_x":8,"scale_y":8,"type":"perlin"},{"gradient":[{"b":0.273438,"g":0.273438,"pos":0,"r":0.273438},{"b":0,"g":0,"pos":1,"r":0}],"name":"colorize_3","node_position":{"x":631,"y":363},"type":"colorize"},{"amount":0.5,"name":"normal_map_0","node_position":{"x":691,"y":295},"type":"normal_map"},{"gradient":[{"b":0,"g":0,"pos":0,"r":0},{"b":1,"g":1,"pos":0.063636,"r":1}],"name":"colorize_2","node_position":{"x":633.943665,"y":146},"type":"colorize"},{"gradient":[{"b":0,"g":0,"pos":0,"r":0},{"b":0,"g":0,"pos":1,"r":0}],"name":"colorize_5","node_position":{"x":837,"y":157},"type":"colorize"},{"gradient":[{"b":1,"g":1,"pos":0,"r":1},{"b":0.672727,"g":0.672727,"pos":1,"r":0.672727}],"name":"colorize_4","node_position":{"x":719,"y":224},"type":"colorize"}]}
\ No newline at end of file
+{"connections":[{"from":"Bricks","from_port":0,"to":"Warp","to_port":0},{"from":"Perlin","from_port":0,"to":"Warp","to_port":1},{"from":"Perlin2","from_port":0,"to":"colorize_0","to_port":0},{"from":"Perlin2","from_port":0,"to":"colorize_1","to_port":0},{"from":"Warp","from_port":0,"to":"colorize_2","to_port":0},{"from":"colorize_2","from_port":0,"to":"blend_0","to_port":2},{"from":"colorize_1","from_port":0,"to":"blend_0","to_port":0},{"from":"colorize_0","from_port":0,"to":"blend_0","to_port":1},{"from":"Warp","from_port":0,"to":"colorize_3","to_port":0},{"from":"blend_0","from_port":0,"to":"Material","to_port":0},{"from":"Warp","from_port":0,"to":"normal_map_0","to_port":0},{"from":"normal_map_0","from_port":0,"to":"Material","to_port":4},{"from":"colorize_3","from_port":0,"to":"Material","to_port":5},{"from":"colorize_2","from_port":0,"to":"colorize_4","to_port":0},{"from":"colorize_4","from_port":0,"to":"Material","to_port":2},{"from":"colorize_2","from_port":0,"to":"colorize_5","to_port":0},{"from":"colorize_5","from_port":0,"to":"Material","to_port":1}],"nodes":[{"bevel":0.2,"columns":3,"mortar":0.05,"name":"Bricks","node_position":{"x":260,"y":132},"row_offset":0.5,"rows":6,"type":"bricks"},{"iterations":6,"name":"Perlin","node_position":{"x":255,"y":322},"persistence":0.5,"scale_x":4,"scale_y":4,"type":"perlin"},{"amount":0.1,"name":"Warp","node_position":{"x":504,"y":199.75},"type":"warp"},{"name":"Material","node_position":{"x":1024,"y":204},"type":"material"},{"iterations":7,"name":"Perlin2","node_position":{"x":253,"y":-28},"persistence":0.75,"scale_x":8,"scale_y":8,"type":"perlin"},{"gradient":[{"b":0.273438,"g":0.273438,"pos":0,"r":0.273438},{"b":0,"g":0,"pos":1,"r":0}],"name":"colorize_3","node_position":{"x":631,"y":363},"type":"colorize"},{"amount":0.5,"name":"normal_map_0","node_position":{"x":691,"y":295},"type":"normal_map"},{"gradient":[{"b":0,"g":0,"pos":0,"r":0},{"b":1,"g":1,"pos":0.054545,"r":1}],"name":"colorize_2","node_position":{"x":633.943665,"y":146},"type":"colorize"},{"gradient":[{"b":0,"g":0,"pos":0,"r":0},{"b":0,"g":0,"pos":1,"r":0}],"name":"colorize_5","node_position":{"x":837,"y":157},"type":"colorize"},{"gradient":[{"b":1,"g":1,"pos":0,"r":1},{"b":0.672727,"g":0.672727,"pos":1,"r":0.672727}],"name":"colorize_4","node_position":{"x":719,"y":224},"type":"colorize"},{"gradient":[{"b":0,"g":0,"pos":0,"r":0},{"b":1,"g":1,"pos":1,"r":1}],"name":"colorize_0","node_position":{"x":560.943665,"y":50},"type":"colorize"},{"gradient":[{"b":0.002889,"g":0.102424,"pos":0,"r":0.184896},{"b":0,"g":0.19869,"pos":0.327273,"r":0.669271},{"b":0.019368,"g":0.060224,"pos":0.645455,"r":0.309896},{"b":0,"g":0.180135,"pos":1,"r":0.606771}],"name":"colorize_1","node_position":{"x":562.943665,"y":-65},"type":"colorize"},{"amount":0.5,"blend_type":0,"name":"blend_0","node_position":{"x":820.943726,"y":-33},"type":"blend"}]}
\ No newline at end of file
diff --git a/examples/lava.ptex b/examples/lava.ptex
index e662906..21c050b 100644
--- a/examples/lava.ptex
+++ b/examples/lava.ptex
@@ -1 +1 @@
-{"connections":[{"from":"perlin_0","from_port":0,"to":"blend_0","to_port":0},{"from":"blend_0","from_port":0,"to":"colorize_0","to_port":0},{"from":"colorize_0","from_port":0,"to":"Material","to_port":0},{"from":"perlin_0","from_port":0,"to":"warp_0","to_port":1},{"from":"voronoi_0","from_port":0,"to":"warp_0","to_port":0},{"from":"warp_0","from_port":0,"to":"blend_0","to_port":1},{"from":"warp_0","from_port":0,"to":"colorize_1","to_port":0},{"from":"warp_0","from_port":0,"to":"colorize_2","to_port":0},{"from":"colorize_2","from_port":0,"to":"Material","to_port":2},{"from":"warp_0","from_port":0,"to":"normal_map_0","to_port":0},{"from":"normal_map_0","from_port":0,"to":"Material","to_port":4},{"from":"colorize_1","from_port":0,"to":"Material","to_port":3},{"from":"colorize_2","from_port":0,"to":"Material","to_port":1},{"from":"colorize_3","from_port":0,"to":"Material","to_port":5},{"from":"warp_0","from_port":0,"to":"colorize_3","to_port":0}],"nodes":[{"name":"Material","node_position":{"x":956,"y":271},"type":"material"},{"iterations":8,"name":"perlin_0","node_position":{"x":-63,"y":-34},"persistence":0.75,"scale_x":4,"scale_y":4,"type":"perlin"},{"intensity":0.55,"name":"voronoi_0","node_position":{"x":-2,"y":204},"scale_x":6,"scale_y":6,"type":"voronoi"},{"gradient":[{"b":0.032597,"g":0.032597,"pos":0.063636,"r":0.032597},{"b":0.111979,"g":0.111979,"pos":0.3,"r":0.111979},{"b":0.029781,"g":0.029781,"pos":0.518182,"r":0.029781},{"b":0.069093,"g":0.069093,"pos":0.818182,"r":0.069093},{"b":0,"g":0,"pos":1,"r":0}],"name":"colorize_0","node_position":{"x":666,"y":27},"type":"colorize"},{"gradient":[{"b":0,"g":0.765625,"pos":0,"r":1},{"b":0,"g":0,"pos":0.172727,"r":1},{"b":0,"g":0,"pos":0.245455,"r":0}],"name":"colorize_1","node_position":{"x":479,"y":215},"type":"colorize"},{"amount":0.9,"name":"normal_map_0","node_position":{"x":501,"y":314.5},"type":"normal_map"},{"amount":0.45,"blend_type":1,"name":"blend_0","node_position":{"x":433,"y":-87},"type":"blend"},{"gradient":[{"b":1,"g":1,"pos":0.281818,"r":1},{"b":0,"g":0,"pos":0.8,"r":0}],"name":"colorize_2","node_position":{"x":498,"y":130.5},"type":"colorize"},{"amount":0.3,"name":"warp_0","node_position":{"x":242,"y":23},"type":"warp"},{"gradient":[{"b":0.345455,"g":0.345455,"pos":0,"r":0.345455},{"b":0,"g":0,"pos":1,"r":0}],"name":"colorize_3","node_position":{"x":419,"y":415.25},"type":"colorize"}]}
\ No newline at end of file
+{"connections":[{"from":"perlin_0","from_port":0,"to":"blend_0","to_port":0},{"from":"blend_0","from_port":0,"to":"colorize_0","to_port":0},{"from":"colorize_0","from_port":0,"to":"Material","to_port":0},{"from":"perlin_0","from_port":0,"to":"warp_0","to_port":1},{"from":"voronoi_0","from_port":0,"to":"warp_0","to_port":0},{"from":"warp_0","from_port":0,"to":"blend_0","to_port":1},{"from":"warp_0","from_port":0,"to":"colorize_1","to_port":0},{"from":"warp_0","from_port":0,"to":"colorize_2","to_port":0},{"from":"colorize_2","from_port":0,"to":"Material","to_port":2},{"from":"warp_0","from_port":0,"to":"normal_map_0","to_port":0},{"from":"normal_map_0","from_port":0,"to":"Material","to_port":4},{"from":"colorize_1","from_port":0,"to":"Material","to_port":3},{"from":"colorize_2","from_port":0,"to":"Material","to_port":1},{"from":"colorize_3","from_port":0,"to":"Material","to_port":5},{"from":"warp_0","from_port":0,"to":"colorize_3","to_port":0}],"nodes":[{"name":"Material","node_position":{"x":956,"y":271},"type":"material"},{"gradient":[{"b":0.032597,"g":0.032597,"pos":0.054545,"r":0.032597},{"b":0.111979,"g":0.111979,"pos":0.3,"r":0.111979},{"b":0.029781,"g":0.029781,"pos":0.518182,"r":0.029781},{"b":0.069093,"g":0.069093,"pos":0.818182,"r":0.069093},{"b":0,"g":0,"pos":1,"r":0}],"name":"colorize_0","node_position":{"x":666,"y":27},"type":"colorize"},{"gradient":[{"b":1,"g":1,"pos":0.272727,"r":1},{"b":0,"g":0,"pos":0.8,"r":0}],"name":"colorize_2","node_position":{"x":653,"y":140.5},"type":"colorize"},{"gradient":[{"b":0,"g":0.765625,"pos":0,"r":1},{"b":0,"g":0,"pos":0.163636,"r":1},{"b":0,"g":0,"pos":0.245455,"r":0}],"name":"colorize_1","node_position":{"x":646,"y":223},"type":"colorize"},{"amount":0.9,"name":"normal_map_0","node_position":{"x":658,"y":309.5},"type":"normal_map"},{"gradient":[{"b":0.345455,"g":0.345455,"pos":0,"r":0.345455},{"b":0,"g":0,"pos":1,"r":0}],"name":"colorize_3","node_position":{"x":658,"y":404.25},"type":"colorize"},{"amount":0.45,"blend_type":1,"name":"blend_0","node_position":{"x":475,"y":-30},"type":"blend"},{"amount":0.3,"name":"warp_0","node_position":{"x":338,"y":196},"type":"warp"},{"intensity":0.55,"name":"voronoi_0","node_position":{"x":130,"y":299},"scale_x":6,"scale_y":6,"type":"voronoi"},{"iterations":8,"name":"perlin_0","node_position":{"x":190,"y":-14},"persistence":0.75,"scale_x":4,"scale_y":4,"type":"perlin"}]}
\ No newline at end of file
diff --git a/examples/wood_with_blood.ptex b/examples/wood_with_blood.ptex
index 2da1840..19ad47d 100644
--- a/examples/wood_with_blood.ptex
+++ b/examples/wood_with_blood.ptex
@@ -1 +1 @@
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diff --git a/generated_image.png.import b/generated_image.png.import
new file mode 100644
index 0000000..3a9b4f1
--- /dev/null
+++ b/generated_image.png.import
@@ -0,0 +1,30 @@
+[remap]
+
+importer="texture"
+type="StreamTexture"
+path.s3tc="res://.import/generated_image.png-791fdae0ab5829f929b4d82eecbe4bc3.s3tc.stex"
+path.etc2="res://.import/generated_image.png-791fdae0ab5829f929b4d82eecbe4bc3.etc2.stex"
+
+[deps]
+
+source_file="res://generated_image.png"
+dest_files=[ "res://.import/generated_image.png-791fdae0ab5829f929b4d82eecbe4bc3.s3tc.stex", "res://.import/generated_image.png-791fdae0ab5829f929b4d82eecbe4bc3.etc2.stex" ]
+
+[params]
+
+compress/mode=2
+compress/lossy_quality=0.7
+compress/hdr_mode=0
+compress/normal_map=0
+flags/repeat=true
+flags/filter=true
+flags/mipmaps=true
+flags/anisotropic=false
+flags/srgb=1
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/HDR_as_SRGB=false
+stream=false
+size_limit=0
+detect_3d=false
+svg/scale=1.0
diff --git a/project.godot b/project.godot
index cf597f6..0f45716 100644
--- a/project.godot
+++ b/project.godot
@@ -10,10 +10,15 @@ config_version=3
 
 [application]
 
-config/name="Procedural textures addon"
+config/name="Procedural textures"
 run/main_scene="res://addons/procedural_material/pm_editor.tscn"
 config/icon="res://icon.png"
 
+[display]
+
+window/size/width=1280
+window/size/height=720
+
 [editor_plugins]
 
 enabled=PoolStringArray( "procedural_material" )