more refactoring, added combine, emboss, export nodes

- Added a combine node that assembles channels into colors
- Added an emboss node
- Added an export node that generates additional file when exporting the material
- Refactored convolution related code

addons/procedural_material/graph_edit.gd

@@ -165,7 +165,9 @@ func do_save_file(filename):
 func export_textures(size = 512):
 	if save_path != null:
 		var prefix = save_path.left(save_path.rfind("."))
-		$Material.export_textures(prefix)
+		for c in get_children():
+			if c is GraphNode && c.has_method("export_textures"):
+				c.export_textures(prefix)
 
 func send_changed_signal():
 	set_need_save(true)

addons/procedural_material/library/base.json

@@ -7,6 +7,10 @@
 		"tree_item":"Filters",
 		"collapsed":false
 	},
+	{
+		"tree_item":"Miscellaneous",
+		"collapsed":false
+	},
 	{
 		"tree_item":"Generators/Image",
 		"type":"image",
@@ -65,6 +69,15 @@
 		"type":"blur",
 		"sigma":1.0
 	},
+	{
+		"tree_item":"Filters/Combine",
+		"type":"combine"
+	},
+	{
+		"tree_item":"Filters/Emboss",
+		"type":"emboss",
+		"direction":0
+	},
 	{
 		"tree_item":"Filters/Normal map",
 		"type":"normal_map",
@@ -122,5 +135,9 @@
           "r": 0
         }
       ]	
+	},
+	{
+		"tree_item":"Miscellaneous/Export",
+		"type":"export"
 	}
 ]}

addons/procedural_material/main_window.gd

@@ -107,7 +107,7 @@ func close_material():
 func export_material():
 	var graph_edit = $VBoxContainer/HBoxContainer/Projects.get_current_tab_control()
 	if graph_edit != null:
-		graph_edit.export_textures(1024)
+		graph_edit.export_textures(2048)
 
 func quit():
 	get_tree().quit()

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" index="0"]
+[node name="MainWindow" type="Panel"]
 
 anchor_left = 0.0
 anchor_top = 0.0

addons/procedural_material/node_base.gd

@@ -207,6 +207,37 @@ func _rerender():
 
 # Generic code for convolution nodes
 
+func get_convolution_shader(convolution):
+	var shader_code
+	shader_code  = "shader_type canvas_item;\n"
+	shader_code += "uniform sampler2D input_tex;\n"
+	shader_code += "void fragment() {\n"
+	shader_code += "vec3 color = vec3(0.0);\n"
+	for dy in range(-convolution.y, convolution.y+1):
+		for dx in range(-convolution.x, convolution.x+1):
+			var i = (2*convolution.x+1)*(dy+convolution.y)+dx+convolution.x
+			var coef = convolution.kernel[i]
+			if typeof(coef) == TYPE_INT:
+				coef = float(coef)
+			if typeof(coef) == TYPE_REAL:
+				coef = Vector3(coef, coef, coef)
+			if typeof(coef) != TYPE_VECTOR3 or coef == Vector3(0, 0, 0):
+				continue
+			shader_code += "color += vec3(%.9f, %.9f, %.9f) * textureLod(input_tex, UV+vec2(%.9f, %.9f), %.9f).rgb;\n" % [ coef.x, coef.y, coef.z, dx*convolution.epsilon, dy*convolution.epsilon, convolution.epsilon ]
+	if convolution.has("scale_before_normalize"):
+		shader_code += "color *= %.9f;\n" % [ convolution.scale_before_normalize ]
+	if convolution.has("translate_before_normalize"):
+		shader_code += "color += vec3(%.9f, %.9f, %.9f);\n" % [ convolution.translate_before_normalize.x, convolution.translate_before_normalize.y, convolution.translate_before_normalize.z ]
+	if convolution.has("normalize") and convolution.normalize:
+		shader_code += "color = normalize(color);\n"
+	if convolution.has("scale"):
+		shader_code += "color *= %.9f;\n" % [ convolution.scale ]
+	if convolution.has("translate"):
+		shader_code += "color += vec3(%.9f, %.9f, %.9f);\n" % [ convolution.translate.x, convolution.translate.y, convolution.translate.z ]
+	shader_code += "COLOR = vec4(color, 1.0);\n"
+	shader_code += "}\n"
+	return shader_code;
+
 func get_shader_code_convolution(src, convolution, uv):
 	var rv = { defs="", code="" }
 	var variant_index = generated_variants.find(uv)
@@ -218,38 +249,6 @@ func get_shader_code_convolution(src, convolution, uv):
 		generated_variants.append(uv)
 		var inputs_code = ""
 		var code = "vec3 %s_%d_rgb = " % [ name, variant_index ]
-		if convolution.has("translate"):
-			code += "vec3(%.9f, %.9f, %.9f)+" % [ convolution.translate.x, convolution.translate.y, convolution.translate.z ]
-		if convolution.has("scale"):
-			code += "%.9f*" % [ convolution.scale ]
-		if convolution.has("normalize") and convolution.normalize:
-			code += "normalize"
-		code += "("
-		if convolution.has("translate_before_normalize"):
-			code += "vec3(%.9f, %.9f, %.9f)+" % [ convolution.translate_before_normalize.x, convolution.translate_before_normalize.y, convolution.translate_before_normalize.z ]
-		if convolution.has("scale_before_normalize"):
-			code += "%.9f*" % [ convolution.scale_before_normalize ]
-		code += "("
-		var first = true
-		for dy in range(-2, 3):
-			for dx in range(-2, 3):
-				var i = 5*(dy+2)+dx+2
-				var coef = convolution.kernel[i]
-				if typeof(coef) == TYPE_REAL:
-					coef = Vector3(coef, coef, coef)
-				if typeof(coef) != TYPE_VECTOR3 or coef == Vector3(0, 0, 0):
-					continue
-				var src_code = src.get_shader_code(uv+"+vec2(%.9f, %.9f)" % [ dx*convolution.epsilon, dy*convolution.epsilon ])
-				if need_defs:
-					rv.defs = src_code.defs
-					need_defs = false
-				inputs_code += src_code.code
-				if !first:
-					code += "+"
-				else:
-					first = false
-				code += "vec3(%.9f, %.9f, %.9f)*(%s)"% [ coef.x, coef.y, coef.z, src_code.rgb ]
-		code += "));"
 		rv.code += inputs_code + code
 	rv.rgb = name+"_"+str(variant_index)+"_rgb"
 	return rv

addons/procedural_material/nodes/blur.gd

@@ -15,34 +15,31 @@ func _ready():
 	final_texture = ImageTexture.new()
 	initialize_properties([ $HBoxContainer1/epsilon, $HBoxContainer2/sigma ])
 
-func get_gaussian_blur_shader(v):
-	var shader_code
+func get_gaussian_blur_shader(horizontal):
+	var convolution = { x=0, y=0, kernel=[], epsilon=epsilon }
 	var kernel_size = 10
-	var kernel = []
-	kernel.resize(2*kernel_size+1)
-	shader_code = "shader_type canvas_item;\n"
-	shader_code += "uniform sampler2D input_tex;\n"
-	shader_code += "void fragment() {\n"
-	shader_code += "vec3 color = vec3(0.0);"
+	if horizontal:
+		convolution.x = kernel_size
+	else:
+		convolution.y = kernel_size
+	convolution.kernel.resize(2*kernel_size+1)
 	var sum = 0
 	for x in range(-kernel_size, kernel_size+1):
 		var coef = exp(-0.5*(pow((x)/sigma, 2.0))) / (2.0*PI*sigma*sigma)
-		kernel[x+kernel_size] = coef
+		convolution.kernel[x+kernel_size] = coef
 		sum += coef
 	for x in range(-kernel_size, kernel_size+1):
-		shader_code += "color += %.9f*textureLod(input_tex, UV+vec2(%.9f, %.9f), %.9f).rgb;\n" % [ kernel[x+kernel_size] / sum, x*v.x, x*v.y, epsilon ]
-	shader_code += "COLOR = vec4(color, 1.0);\n"
-	shader_code += "}\n"
-	return shader_code;
+		convolution.kernel[x+kernel_size] /= sum
+	return get_convolution_shader(convolution)
 
 func _rerender():
 	get_parent().precalculate_shader(input_shader, get_source().get_textures(), 4096, input_texture, self, "pass_1", [])
 
 func pass_1():
-	get_parent().precalculate_shader(get_gaussian_blur_shader(Vector2(epsilon, 0)), { input=input_texture}, 4096, mid_texture, self, "pass_2", [])
+	get_parent().precalculate_shader(get_gaussian_blur_shader(true), { input=input_texture}, 4096, mid_texture, self, "pass_2", [])
 
 func pass_2():
-	get_parent().precalculate_shader(get_gaussian_blur_shader(Vector2(0, epsilon)), { input=mid_texture}, 4096, final_texture, self, "rerender_targets", [])
+	get_parent().precalculate_shader(get_gaussian_blur_shader(false), { input=mid_texture}, 4096, final_texture, self, "rerender_targets", [])
 
 func get_textures():
 	var list = {}
@@ -65,24 +62,3 @@ func _get_shader_code(uv):
 		rv.code = "vec3 "+name+"_"+str(variant_index)+"_rgb = texture("+name+"_tex, "+uv+").rgb;\n"
 	rv.rgb = name+"_"+str(variant_index)+"_rgb"
 	return rv
-
-func __get_shader_code(uv):
-	var convolution = {
-		kernel=[
-			0, 0, 0, 0, 0,
-			0, 0, 0, 0, 0,
-			0, 0, 0, 0, 0,
-			0, 0, 0, 0, 0,
-			0, 0, 0, 0, 0
-		],
-		epsilon=epsilon
-	}
-	var sum = 0
-	for x in range(-2, 3):
-		for y in range(-2, 3):
-			var coef = exp(-0.5*(pow((x-2)/sigma, 2.0) + pow((y-2)/sigma, 2.0))) / (2.0*PI*sigma*sigma)
-			convolution.kernel[x+2+5*(y+2)] = coef
-			sum += coef
-	for i in range(25):
-		convolution.kernel[i] /= sum
-	return get_shader_code_convolution(convolution, uv)

addons/procedural_material/nodes/blur.tscn

@@ -5,7 +5,7 @@
 [sub_resource type="Theme" id=1]
 
 
-[node name="Blur" type="GraphNode"]
+[node name="Blur" type="GraphNode" index="0"]
 
 anchor_left = 0.0
 anchor_top = 0.0

addons/procedural_material/nodes/combine.gd

@@ -0,0 +1,31 @@
+tool
+extends "res://addons/procedural_material/node_base.gd"
+
+func _get_shader_code(uv):
+	var rv = { defs="", code="" }
+	var src0 = get_source(0)
+	var src1 = get_source(1)
+	var src2 = get_source(2)
+	var src0_code = { defs="", code="", f="0.0" }
+	var src1_code = { defs="", code="", f="0.0" }
+	var src2_code = { defs="", code="", f="0.0" }
+	if src0 != null:
+		src0_code = src0.get_shader_code(uv)
+	if src1 != null:
+		src1_code = src1.get_shader_code(uv)
+	if src2 != null:
+		src2_code = src2.get_shader_code(uv)
+	if generated_variants.empty():
+		rv.defs = src0_code.defs;
+		rv.defs += src1_code.defs;
+		rv.defs += src2_code.defs;
+	var variant_index = generated_variants.find(uv)
+	if variant_index == -1:
+		variant_index = generated_variants.size()
+		generated_variants.append(uv)
+		rv.code = src0_code.code
+		rv.code += src1_code.code
+		rv.code += src2_code.code
+		rv.code += "vec3 %s_%d_rgb = vec3(%s, %s, %s);\n" % [ name, variant_index, src0_code.f, src1_code.f, src2_code.f ]
+	rv.rgb = "%s_%d_rgb" % [ name, variant_index ]
+	return rv

addons/procedural_material/nodes/combine.tscn

@@ -0,0 +1,116 @@
+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://addons/procedural_material/nodes/combine.gd" type="Script" id=1]
+
+[sub_resource type="Theme" id=1]
+
+
+[node name="Combine" 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 = "Combine"
+offset = Vector2( 0, 0 )
+show_close = true
+resizable = false
+selected = false
+comment = false
+overlay = 0
+slot/0/left_enabled = true
+slot/0/left_type = 0
+slot/0/left_color = Color( 0.5, 0.5, 1, 1 )
+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/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/right_enabled = false
+slot/2/right_type = 0
+slot/2/right_color = Color( 0.498039, 0.498039, 1, 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 = 86.0
+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"
+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 = 86.0
+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"
+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 = 86.0
+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"
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+

addons/procedural_material/nodes/emboss.gd

@@ -0,0 +1,60 @@
+tool
+extends "res://addons/procedural_material/node_base.gd"
+
+var direction = 0
+
+var input_shader = ""
+var input_texture
+var final_texture
+
+const CONVOLUTION = {
+	x=1,
+	y=1,
+	kernel=[
+		1, 2, 1,
+		0, 0, 0,
+		-1, -2, -1
+	],
+	epsilon=1.0/1024,
+	scale=0.5,
+	translate=Vector3(0.5, 0.5, 0.5)
+}
+
+const INDICES = [ 0, 1, 2, 5, 8, 7, 6, 3 ]
+const COEFS = [ 1, 2, 1, 0, -1, -2, -1, 0 ]
+
+func _ready():
+	input_texture = ImageTexture.new()
+	final_texture = ImageTexture.new()
+	initialize_properties([ $direction ])
+
+func _rerender():
+	get_parent().precalculate_shader(input_shader, get_source().get_textures(), 1024, input_texture, self, "pass_1", [])
+
+func pass_1():
+	var convolution = CONVOLUTION
+	for i in range(8):
+		convolution.kernel[INDICES[i]] = COEFS[(i+8-int(direction))%8]
+	get_parent().precalculate_shader(get_convolution_shader(convolution), {input=input_texture}, 1024, final_texture, self, "rerender_targets", [])
+
+func get_textures():
+	var list = {}
+	list[name] = final_texture
+	return list
+
+func _get_shader_code(uv):
+	var rv = { defs="", code="" }
+	var src = get_source()
+	if src == null:
+		return rv
+	input_shader = do_generate_shader(src.get_shader_code("UV"))
+	_rerender()
+	if generated_variants.empty():
+		rv.defs = "uniform sampler2D "+name+"_tex;\n"
+	var variant_index = generated_variants.find(uv)
+	if variant_index == -1:
+		variant_index = generated_variants.size()
+		generated_variants.append(uv)
+		rv.code = "vec3 "+name+"_"+str(variant_index)+"_rgb = texture("+name+"_tex, "+uv+").rgb;\n"
+	rv.rgb = name+"_"+str(variant_index)+"_rgb"
+	return rv

addons/procedural_material/nodes/emboss.tscn

@@ -0,0 +1,70 @@
+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://addons/procedural_material/nodes/emboss.gd" type="Script" id=1]
+
+[sub_resource type="Theme" id=1]
+
+
+[node name="Emboss" type="GraphNode" index="0"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 1.0
+margin_top = 1.0
+margin_right = 124.0
+margin_bottom = 54.0
+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 = "Emboss"
+offset = Vector2( 0, 0 )
+show_close = true
+resizable = false
+selected = false
+comment = false
+overlay = 0
+slot/0/left_enabled = true
+slot/0/left_type = 0
+slot/0/left_color = Color( 0.5, 0.5, 1, 1 )
+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", "slot", "slot/0" ]
+
+[node name="direction" type="OptionButton" 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 = 107.0
+margin_bottom = 44.0
+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
+text = "Objet 0"
+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 ]
+selected = 0
+_sections_unfolded = [ "Caret", "Placeholder" ]
+
+

addons/procedural_material/nodes/export.gd

@@ -0,0 +1,27 @@
+tool
+extends "res://addons/procedural_material/node_base.gd"
+
+func _ready():
+	pass
+
+func _get_shader_code(uv):
+	var rv = { defs="", code="", f="0.0" }
+	var src = get_source()
+	if src != null:
+		rv = src.get_shader_code(uv)
+	return rv
+
+func export_textures(prefix):
+	var suffix = $Suffix.text
+	if suffix != "":
+		get_parent().export_texture(get_source(), prefix+"_"+suffix+".png", 1024)
+
+func serialize():
+	var data = .serialize()
+	data.suffix = $Suffix.text
+	return data
+
+func deserialize(data):
+	if data.has("suffix"):
+		$Suffix.text = data.suffix
+	.deserialize(data)

addons/procedural_material/nodes/export.tscn

@@ -0,0 +1,64 @@
+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://addons/procedural_material/nodes/export.gd" type="Script" id=1]
+
+[sub_resource type="Theme" id=1]
+
+
+[node name="Export" type="GraphNode"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_right = 114.0
+margin_bottom = 55.0
+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 = "Export"
+offset = Vector2( 0, 0 )
+show_close = false
+resizable = false
+selected = false
+comment = false
+overlay = 0
+slot/0/left_enabled = true
+slot/0/left_type = 0
+slot/0/left_color = Color( 0.5, 0.5, 1, 1 )
+slot/0/right_enabled = false
+slot/0/right_type = 0
+slot/0/right_color = Color( 0.5, 0.5, 1, 1 )
+script = ExtResource( 1 )
+_sections_unfolded = [ "Theme", "slot", "slot/0" ]
+
+[node name="Suffix" type="LineEdit" 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 = 98.0
+margin_bottom = 48.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+focus_mode = 2
+mouse_filter = 0
+mouse_default_cursor_shape = 1
+size_flags_horizontal = 1
+size_flags_vertical = 1
+text = "suffix"
+focus_mode = 2
+context_menu_enabled = true
+placeholder_alpha = 0.6
+caret_blink = false
+caret_blink_speed = 0.65
+caret_position = 0
+
+

addons/procedural_material/nodes/normal_map.gd

@@ -3,15 +3,19 @@ extends "res://addons/procedural_material/node_base.gd"
 
 var amount = 0.0
 
+var input_shader = ""
+var input_texture
+var final_texture
+
 const CONVOLUTION = {
+	x=1,
+	y=1,
 	kernel=[
-		0, 0,                  0,                 0,                 0,
-		0, Vector3(-1, -1, 0), Vector3(0, -2, 0), Vector3(1, -1, 0), 0,
-		0, Vector3(-2, 0, 0),  0,                 Vector3(2, 0, 0),  0,
-		0, Vector3(-1, 1, 0),  Vector3(0, 2, 0),  Vector3(1, 1, 0),  0,
-		0, 0,                  0,                 0,                 0
+		Vector3(-1, -1, 0), Vector3(0, -2, 0), Vector3(1, -1, 0),
+		Vector3(-2, 0, 0),  0,                 Vector3(2, 0, 0),
+		Vector3(-1, 1, 0),  Vector3(0, 2, 0),  Vector3(1, 1, 0),
 	],
-	epsilon=0.005,
+	epsilon=1.0/1024,
 	normalize=true,
 	translate_before_normalize=Vector3(0.0, 0.0, -1.0),
 	scale_before_normalize=0.5,
@@ -20,12 +24,36 @@ const CONVOLUTION = {
 }
 
 func _ready():
+	input_texture = ImageTexture.new()
+	final_texture = ImageTexture.new()
 	initialize_properties([ $amount ])
 
+func _rerender():
+	get_parent().precalculate_shader(input_shader, get_source().get_textures(), 1024, input_texture, self, "pass_1", [])
+
+func pass_1():
+	var convolution = CONVOLUTION
+	convolution.scale_before_normalize = 8.0*amount
+	get_parent().precalculate_shader(get_convolution_shader(convolution), { input=input_texture}, 1024, final_texture, self, "rerender_targets", [])
+
+func get_textures():
+	var list = {}
+	list[name] = final_texture
+	return list
+
 func _get_shader_code(uv):
+	var rv = { defs="", code="" }
 	var src = get_source()
 	if src == null:
-		return { defs="", code="" }
-	var convolution = CONVOLUTION
-	convolution.scale_before_normalize = amount
-	return get_shader_code_convolution(src, convolution, uv)
+		return rv
+	input_shader = do_generate_shader(src.get_shader_code("UV"))
+	_rerender()
+	if generated_variants.empty():
+		rv.defs = "uniform sampler2D "+name+"_tex;\n"
+	var variant_index = generated_variants.find(uv)
+	if variant_index == -1:
+		variant_index = generated_variants.size()
+		generated_variants.append(uv)
+		rv.code = "vec3 "+name+"_"+str(variant_index)+"_rgb = texture("+name+"_tex, "+uv+").rgb;\n"
+	rv.rgb = name+"_"+str(variant_index)+"_rgb"
+	return rv

addons/procedural_material/nodes/pattern.tscn

@@ -5,7 +5,7 @@
 [sub_resource type="Theme" id=1]
 
 
-[node name="Pattern" type="GraphNode" index="0"]
+[node name="Pattern" type="GraphNode"]
 
 anchor_left = 0.0
 anchor_top = 0.0

examples/bricks.ptex

@@ -1 +1 @@
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+{"connections":[{"from":"Perlin","from_port":0,"to":"Warp","to_port":1},{"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":"blend_0","from_port":0,"to":"Material","to_port":0},{"from":"normal_map_0","from_port":0,"to":"Material","to_port":4},{"from":"colorize_2","from_port":0,"to":"colorize_4","to_port":0},{"from":"colorize_4","from_port":0,"to":"Material","to_port":2},{"from":"Bricks","from_port":0,"to":"Warp","to_port":0},{"from":"blend_1","from_port":0,"to":"colorize_1","to_port":0},{"from":"Bricks","from_port":1,"to":"blend_1","to_port":1},{"from":"Warp","from_port":0,"to":"blend_2","to_port":0},{"from":"Perlin","from_port":0,"to":"blend_2","to_port":1},{"from":"blend_2","from_port":0,"to":"colorize_3","to_port":0},{"from":"blend_2","from_port":0,"to":"colorize_6","to_port":0},{"from":"colorize_6","from_port":0,"to":"normal_map_0","to_port":0},{"from":"Perlin","from_port":0,"to":"blend_1","to_port":0},{"from":"Perlin","from_port":0,"to":"colorize_0","to_port":0},{"from":"uniform_0","from_port":0,"to":"Material","to_port":1},{"from":"colorize_3","from_port":0,"to":"Material","to_port":5},{"from":"uniform_0","from_port":0,"to":"combine_0","to_port":0},{"from":"colorize_4","from_port":0,"to":"combine_0","to_port":1},{"from":"combine_0","from_port":0,"to":"export_0","to_port":0}],"nodes":[{"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":0.0016,"g":0.0016,"pos":0,"r":0.307292},{"b":0,"g":0.180135,"pos":0.2,"r":0.606771},{"b":0,"g":0,"pos":0.345455,"r":0.3125},{"b":0,"g":0.19869,"pos":0.545455,"r":0.669271},{"b":0.019368,"g":0.060224,"pos":0.745455,"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"},{"bevel":0.2,"columns":3,"mortar":0.05,"name":"Bricks","node_position":{"x":118,"y":-22},"row_offset":0.5,"rows":6,"type":"bricks"},{"amount":0.04,"name":"Warp","node_position":{"x":384,"y":10.75},"type":"warp"},{"albedo_color":{"a":1,"b":1,"g":1,"r":1,"type":"Color"},"ao_light_affect":1,"depth_scale":0,"emission_energy":1,"metallic":1,"name":"Material","node_position":{"x":1081,"y":208},"normal_scale":1,"roughness":1,"type":"material"},{"amount":0.5,"blend_type":0,"name":"blend_2","node_position":{"x":536,"y":331},"type":"blend"},{"gradient":[{"b":1,"g":1,"pos":0,"r":1},{"b":0.463542,"g":0.463542,"pos":1,"r":0.463542}],"name":"colorize_4","node_position":{"x":708,"y":224},"type":"colorize"},{"amount":0.5,"blend_type":0,"name":"blend_0","node_position":{"x":836.943726,"y":-71},"type":"blend"},{"gradient":[{"b":0,"g":0,"pos":0,"r":0},{"b":1,"g":1,"pos":0.1,"r":1}],"name":"colorize_2","node_position":{"x":544.943665,"y":159},"type":"colorize"},{"amount":0.5,"blend_type":6,"name":"blend_1","node_position":{"x":349,"y":215},"type":"blend"},{"iterations":6,"name":"Perlin","node_position":{"x":115,"y":194},"persistence":0.85,"scale_x":4,"scale_y":4,"type":"perlin"},{"gradient":[{"b":1,"g":1,"pos":0,"r":1},{"b":0,"g":0,"pos":1,"r":0}],"name":"colorize_6","node_position":{"x":743,"y":291},"type":"colorize"},{"gradient":[{"b":0.510417,"g":0.510417,"pos":0.245455,"r":0.510417},{"b":1,"g":1,"pos":0.536364,"r":1}],"name":"colorize_3","node_position":{"x":753,"y":364},"type":"colorize"},{"amount":0.5,"name":"normal_map_0","node_position":{"x":922,"y":297},"type":"normal_map"},{"color":{"a":1,"b":0,"g":0,"r":0,"type":"Color"},"name":"uniform_0","node_position":{"x":764,"y":164},"type":"uniform"},{"name":"combine_0","node_position":{"x":896,"y":86},"type":"combine"},{"name":"export_0","node_position":{"x":1050,"y":79},"suffix":"mr","type":"export"}]}

examples/metal_pattern.ptex

@@ -1 +1 @@
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export_presets.cfg

@@ -5,15 +5,15 @@ platform="Windows Desktop"
 runnable=true
 custom_features=""
 export_filter="all_resources"
-include_filter=""
+include_filter="*.json,res://addons/procedural_material/library/base/*.png"
 exclude_filter="*.ptex"
 patch_list=PoolStringArray(  )
 
 [preset.0.options]
 
 texture_format/s3tc=true
-texture_format/etc=false
-texture_format/etc2=false
+texture_format/etc=true
+texture_format/etc2=true
 binary_format/64_bits=true
 custom_template/release=""
 custom_template/debug=""