First version

Created base framework and created simple operators

.gitignore

@@ -0,0 +1 @@
+.import

addons/procedural_material/boolean.gd

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+tool
+extends "res://addons/procedural_material/node_base.gd"
+
+func _ready():
+	set_slot(0, true, 0, Color(0.5, 0.5, 1), true, 0, Color(0.5, 0.5, 1))
+	set_slot(1, true, 0, Color(0.5, 0.5, 1), false, 0, Color(0.5, 0.5, 1))
+
+func get_shader_code(uv):
+	var rv = { defs="", code="", uv=null, rgb=null, f=null }
+	var src0 = get_source(0)
+	var src1 = get_source(1)
+	if src0 == null || src1 == null:
+		return rv
+	var src0_code = src0.get_shader_code(uv)
+	var src1_code = src1.get_shader_code(uv)
+	if !generated:
+		rv.defs = src0_code.defs+src1_code.defs
+		rv.code  = "float "+name+"_f = "+src0_code.f+"+"+src1_code.f+";\n"
+		generated = true
+	rv.f = name+"_f"
+	return rv

addons/procedural_material/boolean.tscn

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+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://addons/procedural_material/boolean.gd" type="Script" id=1]
+
+[sub_resource type="Theme" id=1]
+
+
+[node name="Boolean" type="GraphNode" index="0"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 329.0
+margin_top = 117.0
+margin_right = 462.0
+margin_bottom = 279.0
+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 = "Boolean"
+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( 0.5, 0.5, 1, 1 )
+slot/1/right_enabled = false
+slot/1/right_type = 0
+slot/1/right_color = Color( 0.5, 0.5, 1, 1 )
+script = ExtResource( 1 )
+_sections_unfolded = [ "Theme" ]
+
+[node name="OptionButton" 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 = 117.0
+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
+flat = false
+align = 0
+items = [  ]
+selected = -1
+
+[node name="OptionButton2" type="OptionButton" 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 = 117.0
+margin_bottom = 64.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+focus_mode = 2
+mouse_filter = 0
+mouse_default_cursor_shape = 0
+size_flags_horizontal = 1
+size_flags_vertical = 1
+toggle_mode = false
+action_mode = 0
+enabled_focus_mode = 2
+shortcut = null
+group = null
+flat = false
+align = 0
+items = [  ]
+selected = -1
+
+[connection signal="close_request" from="." to="." method="queue_free"]
+
+

addons/procedural_material/bricks.gd

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+tool
+extends "res://addons/procedural_material/node_base.gd"
+
+var rows
+var columns
+var row_offset
+var mortar
+var bevel
+
+func _ready():
+	set_slot(0, false, 0, Color(0.5, 0.5, 1), true, 0, Color(0.5, 0.5, 1))
+	initialize_properties([ $GridContainer/rows, $GridContainer/columns, $GridContainer/row_offset, $GridContainer/mortar, $GridContainer/bevel ])
+
+func get_shader_code(uv):
+	var rv = { defs="", code="", rgb=null, f=null }
+	if !generated:
+		rv.defs = "float "+name+"_f(vec2 uv) { return bricks(uv, vec2("+str(rows)+", "+str(columns)+"), "+str(row_offset)+", "+str(mortar)+", "+str(bevel)+"); }\n"
+		generated = true
+	rv.f = name+"_f("+uv+")"
+	return rv
+
+func _get_state_variables():
+	return [ "rows", "columns", "row_offset", "mortar", "bevel" ]

addons/procedural_material/bricks.tscn

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+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://addons/procedural_material/bricks.gd" type="Script" id=1]
+
+[sub_resource type="Theme" id=1]
+
+
+[node name="Bricks" type="GraphNode" index="0"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 251.0
+margin_top = 121.0
+margin_right = 405.0
+margin_bottom = 286.0
+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 = "Bricks"
+offset = Vector2( 0, 0 )
+show_close = true
+resizable = false
+selected = false
+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/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" ]
+
+[node name="GridContainer" type="GridContainer" 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 = 138.0
+margin_bottom = 160.0
+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
+columns = 2
+
+[node name="Label1" type="Label" parent="GridContainer" index="0"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_top = 5.0
+margin_right = 60.0
+margin_bottom = 19.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 2
+mouse_default_cursor_shape = 0
+size_flags_horizontal = 1
+size_flags_vertical = 4
+text = "Rows:"
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+[node name="rows" type="LineEdit" parent="GridContainer" index="1"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 64.0
+margin_right = 122.0
+margin_bottom = 24.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+focus_mode = 2
+mouse_filter = 0
+mouse_default_cursor_shape = 1
+size_flags_horizontal = 1
+size_flags_vertical = 1
+text = "3"
+focus_mode = 2
+context_menu_enabled = true
+placeholder_alpha = 0.6
+caret_blink = false
+caret_blink_speed = 0.65
+caret_position = 0
+_sections_unfolded = [ "Caret", "Placeholder" ]
+
+[node name="Label2" type="Label" parent="GridContainer" index="2"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_top = 33.0
+margin_right = 60.0
+margin_bottom = 47.0
+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 = "Columns:"
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+[node name="columns" type="LineEdit" parent="GridContainer" index="3"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 64.0
+margin_top = 28.0
+margin_right = 122.0
+margin_bottom = 52.0
+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 = "6"
+focus_mode = 2
+context_menu_enabled = true
+placeholder_alpha = 0.6
+caret_blink = false
+caret_blink_speed = 0.65
+caret_position = 0
+_sections_unfolded = [ "Caret", "Placeholder" ]
+
+[node name="Label3" type="Label" parent="GridContainer" index="4"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_top = 61.0
+margin_right = 60.0
+margin_bottom = 75.0
+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 = "Offset:"
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+[node name="row_offset" type="LineEdit" parent="GridContainer" index="5"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 64.0
+margin_top = 56.0
+margin_right = 122.0
+margin_bottom = 80.0
+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 = "0.5"
+focus_mode = 2
+context_menu_enabled = true
+placeholder_alpha = 0.6
+caret_blink = false
+caret_blink_speed = 0.65
+caret_position = 0
+_sections_unfolded = [ "Caret", "Placeholder" ]
+
+[node name="Label4" type="Label" parent="GridContainer" index="6"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_top = 89.0
+margin_right = 60.0
+margin_bottom = 103.0
+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 = "Mortar:"
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+[node name="mortar" type="LineEdit" parent="GridContainer" index="7"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 64.0
+margin_top = 84.0
+margin_right = 122.0
+margin_bottom = 108.0
+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 = "0.1"
+focus_mode = 2
+context_menu_enabled = true
+placeholder_alpha = 0.6
+caret_blink = false
+caret_blink_speed = 0.65
+caret_position = 0
+_sections_unfolded = [ "Caret", "Placeholder" ]
+
+[node name="Label5" type="Label" parent="GridContainer" index="8"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_top = 117.0
+margin_right = 60.0
+margin_bottom = 131.0
+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 = "Bevel:"
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+[node name="bevel" type="LineEdit" parent="GridContainer" index="9"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 64.0
+margin_top = 112.0
+margin_right = 122.0
+margin_bottom = 136.0
+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 = "0.1"
+focus_mode = 2
+context_menu_enabled = true
+placeholder_alpha = 0.6
+caret_blink = false
+caret_blink_speed = 0.65
+caret_position = 0
+_sections_unfolded = [ "Caret", "Placeholder" ]
+
+[connection signal="close_request" from="." to="." method="queue_free"]
+
+

addons/procedural_material/graph_edit.gd

@@ -0,0 +1,15 @@
+tool
+extends GraphEdit
+
+func _ready():
+	pass
+
+func get_source(node, port):
+	for c in get_connection_list():
+		if c.to == node && c.to_port == port:
+			return { node=c.from, slot=c.from_port }
+
+func remove_node(node):
+	for c in get_connection_list():
+		if c.from == node or c.to == node:
+			disconnect_node(c.from, c.from_port, c.to, c.to_port)

addons/procedural_material/iqnoise.gd

@@ -0,0 +1,18 @@
+tool
+extends "res://addons/procedural_material/node_base.gd"
+
+var subdivide
+var u
+var v
+
+func _ready():
+	set_slot(0, false, 0, Color(0.5, 0.5, 1), true, 0, Color(0.5, 0.5, 1))
+	initialize_properties([ $GridContainer/subdivide, $GridContainer/u, $GridContainer/v ])
+
+func get_shader_code(uv):
+	var rv = { defs="", code="", rgb=null, f=null }
+	if !generated:
+		rv.defs = "float "+name+"_f(vec2 uv) { return iqnoise(uv, "+str(subdivide)+", "+str(u)+", "+str(v)+"); }\n"
+		generated = true
+	rv.f = name+"_f("+uv+")"
+	return rv

addons/procedural_material/iqnoise.tscn

@@ -0,0 +1,198 @@
+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://addons/procedural_material/iqnoise.gd" type="Script" id=1]
+
+[sub_resource type="Theme" id=1]
+
+
+[node name="IQNoise" 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 = 2.0
+margin_right = 161.0
+margin_bottom = 139.0
+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 = "IQNoise"
+offset = Vector2( 0, 0 )
+show_close = true
+resizable = false
+selected = false
+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/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" ]
+
+[node name="GridContainer" type="GridContainer" 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 = 144.0
+margin_bottom = 104.0
+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
+columns = 2
+
+[node name="Label1" type="Label" parent="GridContainer" index="0"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_top = 5.0
+margin_right = 66.0
+margin_bottom = 19.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 2
+mouse_default_cursor_shape = 0
+size_flags_horizontal = 1
+size_flags_vertical = 4
+text = "Subdivide:"
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+[node name="subdivide" type="LineEdit" parent="GridContainer" index="1"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 70.0
+margin_right = 128.0
+margin_bottom = 24.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+focus_mode = 2
+mouse_filter = 0
+mouse_default_cursor_shape = 1
+size_flags_horizontal = 1
+size_flags_vertical = 1
+text = "3"
+focus_mode = 2
+context_menu_enabled = true
+placeholder_alpha = 0.6
+caret_blink = false
+caret_blink_speed = 0.65
+caret_position = 0
+_sections_unfolded = [ "Caret", "Placeholder" ]
+
+[node name="Label2" type="Label" parent="GridContainer" index="2"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_top = 33.0
+margin_right = 66.0
+margin_bottom = 47.0
+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 = "U:"
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+[node name="u" type="LineEdit" parent="GridContainer" index="3"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 70.0
+margin_top = 28.0
+margin_right = 128.0
+margin_bottom = 52.0
+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 = "0.5"
+focus_mode = 2
+context_menu_enabled = true
+placeholder_alpha = 0.6
+caret_blink = false
+caret_blink_speed = 0.65
+caret_position = 0
+_sections_unfolded = [ "Caret", "Placeholder" ]
+
+[node name="Label3" type="Label" parent="GridContainer" index="4"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_top = 61.0
+margin_right = 66.0
+margin_bottom = 75.0
+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 = "V:"
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+[node name="v" type="LineEdit" parent="GridContainer" index="5"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 70.0
+margin_top = 56.0
+margin_right = 128.0
+margin_bottom = 80.0
+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 = "0.5"
+focus_mode = 2
+context_menu_enabled = true
+placeholder_alpha = 0.6
+caret_blink = false
+caret_blink_speed = 0.65
+caret_position = 0
+_sections_unfolded = [ "Caret", "Placeholder" ]
+
+[connection signal="close_request" from="." to="." method="queue_free"]
+
+

addons/procedural_material/material.gd

@@ -0,0 +1,25 @@
+tool
+extends "res://addons/procedural_material/node_base.gd"
+
+func _ready():
+	set_slot(0, true, 0, Color(0.5, 0.5, 1), false, 0, Color(0.5, 0.5, 1))
+
+func get_shader_code(uv):
+	var rv = { defs="", code="", rgb=null, f=null }
+	var src = get_source()
+	if src == null:
+		rv.code += "void fragment() {\n"
+		rv.code += "COLOR = vec4(0.0, 0.0, 0.0, 1.0);"
+	else:
+		var src_code = src.get_shader_code("UV")
+		rv.code += src_code.defs
+		rv.code += "void fragment() {\n"
+		rv.code += src_code.code+"\n"
+		if src_code.rgb != null:
+			rv.code += "vec3 "+name+"_rgb = "+src_code.rgb+"\n"
+			rv.code += "COLOR = vec4("+name+"_rgb.r, "+name+"_rgb.g, "+name+"_rgb.b, 1.0);"
+		elif src_code.f != null:
+			rv.code += "float "+name+"_f = "+src_code.f+";\n"
+			rv.code += "COLOR = vec4("+name+"_f, "+name+"_f, "+name+"_f, 1.0);"
+			rv.code += "\n}\n"
+	return rv

addons/procedural_material/material.tscn

@@ -0,0 +1,62 @@
+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://addons/procedural_material/material.gd" type="Script" id=1]
+
+[sub_resource type="Theme" id=1]
+
+
+[node name="Material" type="GraphNode" index="0"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 550.0
+margin_top = 226.0
+margin_right = 683.0
+margin_bottom = 419.0
+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 = "Material"
+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" ]
+
+[node name="Label" 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 = 117.0
+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 = "Texture"
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+

addons/procedural_material/node_base.gd

@@ -0,0 +1,28 @@
+tool
+extends GraphNode
+
+var generated = false
+
+func _ready():
+	pass
+
+func initialize_properties(object_list):
+	for o in object_list:
+		if o is LineEdit:
+			set(o.name, float(o.text))
+			o.connect("text_changed", self, "_on_text_changed", [ o.name ])
+
+func _on_text_changed(new_text, variable):
+	set(variable, float(new_text))
+	get_parent().get_parent().generate_shader()
+
+func get_source(index = 0):
+	for c in get_parent().get_children():
+		if c != self && c is GraphNode:
+			if get_parent().is_node_connected(c.name, 0, name, index):
+				return c
+	return null
+
+func queue_free():
+	get_parent().remove_node(self.name)
+	.queue_free()

addons/procedural_material/perlin.gd

@@ -0,0 +1,17 @@
+tool
+extends "res://addons/procedural_material/node_base.gd"
+
+var iterations
+var turbulence
+
+func _ready():
+	set_slot(0, false, 0, Color(0.5, 0.5, 1), true, 0, Color(0.5, 0.5, 1))
+	initialize_properties([ $GridContainer/iterations, $GridContainer/turbulence ])
+
+func get_shader_code(uv):
+	var rv = { defs="", code="", rgb=null, f=null }
+	if !generated:
+		rv.defs = "float "+name+"_f(vec2 uv) { return perlin(uv, "+str(iterations)+", "+str(turbulence)+"); }\n"
+		generated = true
+	rv.f = name+"_f("+uv+")"
+	return rv

addons/procedural_material/perlin.tscn

@@ -0,0 +1,152 @@
+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://addons/procedural_material/perlin.gd" type="Script" id=1]
+
+[sub_resource type="Theme" id=1]
+
+
+[node name="Perlin" 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 = 2.0
+margin_right = 166.0
+margin_bottom = 83.0
+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 = "Perlin"
+offset = Vector2( 0, 0 )
+show_close = true
+resizable = false
+selected = false
+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/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" ]
+
+[node name="GridContainer" type="GridContainer" 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 = 149.0
+margin_bottom = 76.0
+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
+columns = 2
+
+[node name="Label1" type="Label" parent="GridContainer" index="0"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_top = 5.0
+margin_right = 71.0
+margin_bottom = 19.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 2
+mouse_default_cursor_shape = 0
+size_flags_horizontal = 1
+size_flags_vertical = 4
+text = "Iterations:"
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+[node name="iterations" type="LineEdit" parent="GridContainer" index="1"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 75.0
+margin_right = 133.0
+margin_bottom = 24.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+focus_mode = 2
+mouse_filter = 0
+mouse_default_cursor_shape = 1
+size_flags_horizontal = 1
+size_flags_vertical = 1
+text = "3"
+focus_mode = 2
+context_menu_enabled = true
+placeholder_alpha = 0.6
+caret_blink = false
+caret_blink_speed = 0.65
+caret_position = 0
+_sections_unfolded = [ "Caret", "Placeholder" ]
+
+[node name="Label2" type="Label" parent="GridContainer" index="2"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_top = 33.0
+margin_right = 71.0
+margin_bottom = 47.0
+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 = "Turbulence"
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+[node name="turbulence" type="LineEdit" parent="GridContainer" index="3"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 75.0
+margin_top = 28.0
+margin_right = 133.0
+margin_bottom = 52.0
+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 = "0.5"
+focus_mode = 2
+context_menu_enabled = true
+placeholder_alpha = 0.6
+caret_blink = false
+caret_blink_speed = 0.65
+caret_position = 0
+_sections_unfolded = [ "Caret", "Placeholder" ]
+
+[connection signal="close_request" from="." to="." method="queue_free"]
+
+

addons/procedural_material/plugin.cfg

@@ -0,0 +1,7 @@
+[plugin]
+
+name="ProceduralMaterial"
+description="Procedural Material creation tool"
+author="RodZilla"
+version="0.1"
+script="plugin.gd"

addons/procedural_material/plugin.gd

@@ -0,0 +1,20 @@
+tool
+extends EditorPlugin
+
+var editor = null
+
+func _enter_tree():
+	editor = preload("res://addons/procedural_material/pm_editor.tscn").instance()
+	add_control_to_bottom_panel(editor, "ProceduralMaterial")
+
+func _exit_tree():
+	remove_control_from_bottom_panel(editor)
+	editor.queue_free()
+	editor = null
+
+func _get_state():
+	var s = {}
+	return s
+
+func _set_state(s):
+	pass

addons/procedural_material/pm_editor.gd

@@ -0,0 +1,54 @@
+tool
+extends Container
+
+var popup_position = Vector2(0, 0)
+
+const MENU = [
+	{ name="sine", description="Sine" },
+	{ name="boolean", description="Boolean" },
+	{ name="bricks", description="Bricks" },
+	{ name="iqnoise", description="IQ Noise" },
+	{ name="perlin", description="Perlin noise" },
+	{ name="transform", description="Transform" }
+]
+
+func _ready():
+	$GraphEdit.add_valid_connection_type(0, 0)
+	$GraphEdit/PopupMenu.clear()
+	for i in MENU.size():
+		$GraphEdit/PopupMenu.add_item(MENU[i].description, i)
+
+func _on_GraphEdit_popup_request(position):
+	popup_position = position
+	$GraphEdit/PopupMenu.popup(Rect2(position, $GraphEdit/PopupMenu.rect_size))
+
+func _on_PopupMenu_id_pressed(id):
+	var node_type = null
+	node_type = load("res://addons/procedural_material/"+MENU[id].name+".tscn")
+	if node_type != null:
+		var node = node_type.instance()
+		$GraphEdit.add_child(node)
+		node.set_begin(popup_position)
+
+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 generate_shader():
+	var code = ""
+	var file = File.new()
+	file.open("res://addons/procedural_material/shader_header.txt", File.READ)
+	while !file.eof_reached():
+		code += file.get_line()
+		code += "\n"
+	for c in $GraphEdit.get_children():
+		if c is GraphNode:
+			c.generated = false
+	var shader_code = $GraphEdit/Material.get_shader_code("UV")
+	code += shader_code.code
+	#print(code)
+	$Preview.material.shader.set_code(code)
+

addons/procedural_material/pm_editor.tscn

@@ -0,0 +1,213 @@
+[gd_scene load_steps=6 format=2]
+
+[ext_resource path="res://addons/procedural_material/pm_editor.gd" type="Script" id=1]
+[ext_resource path="res://addons/procedural_material/graph_edit.gd" type="Script" id=2]
+[ext_resource path="res://addons/procedural_material/material.tscn" type="PackedScene" id=3]
+
+[sub_resource type="Shader" id=1]
+
+code = "shader_type canvas_item;
+
+float hash1(vec2 p) {
+    float q = dot(p,vec2(127.1,311.7));
+	return fract(sin(q)*43758.5453);
+}
+
+vec2 hash2(vec2 p) {
+    vec2 q = vec2( dot(p,vec2(127.1,311.7)), 
+				   dot(p,vec2(269.5,183.3)) );
+	return fract(sin(q)*43758.5453);
+}
+
+vec3 hash3(vec2 p) {
+    vec3 q = vec3( dot(p,vec2(127.1,311.7)), 
+				   dot(p,vec2(269.5,183.3)), 
+				   dot(p,vec2(419.2,371.9)) );
+	return fract(sin(q)*43758.5453);
+}
+
+float sine(vec2 uv, float count, float sharpness) {
+	return max(0.0, min(1.0, (0.5+sharpness*0.5*sin(count*3.1415928*2.0*uv.x))));
+}
+
+vec2 rotate(vec2 uv, float angle) {
+	vec2 rv;
+	rv.x = cos(angle)*uv.x + sin(angle)*uv.y;
+	rv.y = -sin(angle)*uv.x + cos(angle)*uv.y;
+	return rv;
+}
+
+float bricks(vec2 uv, vec2 count, float offset, float mortar, float bevel) {
+	mortar /= max(count.x, count.y);
+	bevel /= max(count.x, count.y);
+	float fract_x = fract(uv.x*count.x+offset*step(0.5, fract(uv.y*count.y*0.5)));
+	float slope_x = 1.0/(bevel*count.x);
+	float off = 0.5*mortar/bevel;
+	float f1 = fract_x*slope_x-off;
+	float f2 = (1.0-fract_x)*slope_x-off;
+	float fract_y = fract(uv.y*count.y);
+	float slope_y = 1.0/(bevel*count.y);
+	float f3 = fract_y*slope_y-off;
+	float f4 = (1.0-fract_y)*slope_y-off;
+	return min(min(f1, f2), min(f3, f4));
+}
+
+float colored_bricks(vec2 uv, vec2 count, float offset) {
+	float x = floor(uv.x*count.x+offset*step(0.5, fract(uv.y*count.y*0.5)));
+	float y = floor(uv.y*count.y);
+	return fract(x/3.0+y/7.0);
+}
+
+float iqnoise(vec2 uv, float s, float u, float v) {
+	uv *= s;
+    vec2 p = floor(uv);
+    vec2 f = fract(uv);
+		
+	float k = 1.0+63.0*pow(1.0-v,4.0);
+	
+	float va = 0.0;
+	float wt = 0.0;
+    for( int j=-2; j<=2; j++ )
+    for( int i=-2; i<=2; i++ )
+    {
+        vec2 g = vec2( float(i),float(j) );
+		vec3 o = hash3( p + g )*vec3(u,u,1.0);
+		vec2 r = g - f + o.xy;
+		float d = dot(r,r);
+		float ww = pow( 1.0-smoothstep(0.0,1.414,sqrt(d)), k );
+		va += o.z*ww;
+		wt += ww;
+    }
+	
+    return va/wt;
+}
+
+float perlin(vec2 uv, int iterations, float turbulence) {
+	float f = 0.0;
+	float c = 1.0;
+	float s = 2.0;
+	float m = 0.0;
+    for(int i = 0; i < iterations; i++) {
+		vec2 uv2 = float(s) * uv;
+		vec2 uv2_floor = floor(uv2);
+		vec2 uv2_fract = fract(uv2);
+		f += c * (  (1.0 - uv2_fract.x) * ((1.0 - uv2_fract.y) * hash1(uv2_floor) + uv2_fract.y * hash1(uv2_floor+vec2(0.0, 1.0)))
+			      + uv2_fract.x * ((1.0 - uv2_fract.y) * hash1(uv2_floor+vec2(1.0, 0.0)) + uv2_fract.y * hash1(uv2_floor+vec2(1.0, 1.0))));
+		m += c;
+		s *= 2.0;
+		c *= turbulence;
+	}
+	return f/m;
+}
+
+float Sine_f(vec2 uv) { return sine(uv, 1, 1); }
+void fragment() {
+
+float Material_f = Sine_f(UV);
+COLOR = vec4(Material_f, Material_f, Material_f, 1.0);
+}
+"
+_sections_unfolded = [ "Resource" ]
+
+[sub_resource type="ShaderMaterial" id=2]
+
+render_priority = 0
+shader = SubResource( 1 )
+
+[node name="ProceduralMaterialEditor" type="MarginContainer" index="0"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 1.0
+anchor_bottom = 1.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 0
+mouse_default_cursor_shape = 0
+size_flags_horizontal = 1
+size_flags_vertical = 1
+custom_constants/margin_left = 0
+script = ExtResource( 1 )
+_sections_unfolded = [ "custom_constants" ]
+
+[node name="GraphEdit" type="GraphEdit" parent="." index="0"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_right = 1024.0
+margin_bottom = 600.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = true
+focus_mode = 2
+mouse_filter = 0
+mouse_default_cursor_shape = 0
+size_flags_horizontal = 1
+size_flags_vertical = 1
+right_disconnects = false
+scroll_offset = Vector2( 0, 0 )
+snap_distance = 20
+use_snap = false
+zoom = 1.0
+script = ExtResource( 2 )
+_sections_unfolded = [ "Mouse" ]
+
+[node name="Material" parent="GraphEdit" index="0" instance=ExtResource( 3 )]
+
+margin_left = 0.0
+margin_top = 0.0
+margin_right = 84.0
+margin_bottom = 43.0
+_sections_unfolded = [ "Anchor", "Margin", "Mouse", "slot" ]
+
+[node name="PopupMenu" type="PopupMenu" parent="GraphEdit" index="1"]
+
+visible = false
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 920.0
+margin_top = 548.0
+margin_right = 1024.0
+margin_bottom = 600.0
+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
+popup_exclusive = false
+items = [ "Material", null, 0, false, false, 0, 0, null, "", false, "Sine", null, 0, false, false, 1, 0, null, "", false, "Boolean", null, 0, false, false, 2, 0, null, "", false, "Bricks", null, 0, false, false, 3, 0, null, "", false, "IQ Noise", null, 0, false, false, 4, 0, null, "", false, "Perlin noise", null, 0, false, false, 5, 0, null, "", false, "Transform", null, 0, false, false, 6, 0, null, "", false ]
+hide_on_state_item_selection = false
+_sections_unfolded = [ "Rect" ]
+
+[node name="Preview" type="ColorRect" parent="." index="1"]
+
+material = SubResource( 2 )
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 768.0
+margin_right = 1024.0
+margin_bottom = 256.0
+rect_min_size = Vector2( 256, 256 )
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 2
+mouse_default_cursor_shape = 0
+size_flags_horizontal = 8
+size_flags_vertical = 0
+color = Color( 1, 1, 1, 1 )
+_sections_unfolded = [ "Material", "Mouse", "Rect" ]
+
+[connection signal="connection_request" from="GraphEdit" to="." method="_on_GraphEdit_connection_request"]
+
+[connection signal="popup_request" from="GraphEdit" to="." method="_on_GraphEdit_popup_request"]
+
+[connection signal="id_pressed" from="GraphEdit/PopupMenu" to="." method="_on_PopupMenu_id_pressed"]
+
+

addons/procedural_material/shader_header.txt

@@ -0,0 +1,93 @@
+shader_type canvas_item;
+
+float hash1(vec2 p) {
+    float q = dot(p,vec2(127.1,311.7));
+	return fract(sin(q)*43758.5453);
+}
+
+vec2 hash2(vec2 p) {
+    vec2 q = vec2( dot(p,vec2(127.1,311.7)), 
+				   dot(p,vec2(269.5,183.3)) );
+	return fract(sin(q)*43758.5453);
+}
+
+vec3 hash3(vec2 p) {
+    vec3 q = vec3( dot(p,vec2(127.1,311.7)), 
+				   dot(p,vec2(269.5,183.3)), 
+				   dot(p,vec2(419.2,371.9)) );
+	return fract(sin(q)*43758.5453);
+}
+
+float sine(vec2 uv, float count, float sharpness) {
+	return max(0.0, min(1.0, (0.5+sharpness*0.5*sin(count*3.1415928*2.0*uv.x))));
+}
+
+vec2 rotate(vec2 uv, float angle) {
+	vec2 rv;
+	rv.x = cos(angle)*uv.x + sin(angle)*uv.y;
+	rv.y = -sin(angle)*uv.x + cos(angle)*uv.y;
+	return rv;
+}
+
+float bricks(vec2 uv, vec2 count, float offset, float mortar, float bevel) {
+	mortar /= max(count.x, count.y);
+	bevel /= max(count.x, count.y);
+	float fract_x = fract(uv.x*count.x+offset*step(0.5, fract(uv.y*count.y*0.5)));
+	float slope_x = 1.0/(bevel*count.x);
+	float off = 0.5*mortar/bevel;
+	float f1 = fract_x*slope_x-off;
+	float f2 = (1.0-fract_x)*slope_x-off;
+	float fract_y = fract(uv.y*count.y);
+	float slope_y = 1.0/(bevel*count.y);
+	float f3 = fract_y*slope_y-off;
+	float f4 = (1.0-fract_y)*slope_y-off;
+	return min(min(f1, f2), min(f3, f4));
+}
+
+float colored_bricks(vec2 uv, vec2 count, float offset) {
+	float x = floor(uv.x*count.x+offset*step(0.5, fract(uv.y*count.y*0.5)));
+	float y = floor(uv.y*count.y);
+	return fract(x/3.0+y/7.0);
+}
+
+float iqnoise(vec2 uv, float s, float u, float v) {
+	uv *= s;
+    vec2 p = floor(uv);
+    vec2 f = fract(uv);
+		
+	float k = 1.0+63.0*pow(1.0-v,4.0);
+	
+	float va = 0.0;
+	float wt = 0.0;
+    for( int j=-2; j<=2; j++ )
+    for( int i=-2; i<=2; i++ )
+    {
+        vec2 g = vec2( float(i),float(j) );
+		vec3 o = hash3( p + g )*vec3(u,u,1.0);
+		vec2 r = g - f + o.xy;
+		float d = dot(r,r);
+		float ww = pow( 1.0-smoothstep(0.0,1.414,sqrt(d)), k );
+		va += o.z*ww;
+		wt += ww;
+    }
+	
+    return va/wt;
+}
+
+float perlin(vec2 uv, int iterations, float turbulence) {
+	float f = 0.0;
+	float c = 1.0;
+	float s = 2.0;
+	float m = 0.0;
+    for(int i = 0; i < iterations; i++) {
+		vec2 uv2 = float(s) * uv;
+		vec2 uv2_floor = floor(uv2);
+		vec2 uv2_fract = fract(uv2);
+		f += c * (  (1.0 - uv2_fract.x) * ((1.0 - uv2_fract.y) * hash1(uv2_floor) + uv2_fract.y * hash1(uv2_floor+vec2(0.0, 1.0)))
+			      + uv2_fract.x * ((1.0 - uv2_fract.y) * hash1(uv2_floor+vec2(1.0, 0.0)) + uv2_fract.y * hash1(uv2_floor+vec2(1.0, 1.0))));
+		m += c;
+		s *= 2.0;
+		c *= turbulence;
+	}
+	return f/m;
+}

addons/procedural_material/sine.gd

@@ -0,0 +1,24 @@
+tool
+extends "res://addons/procedural_material/node_base.gd"
+
+var waves = 1.0
+var sharpness = 1.0
+
+func _ready():
+	set_slot(0, false, 0, Color(0.5, 0.5, 1), true, 0, Color(0.5, 0.5, 1))
+
+func get_shader_code(uv):
+	var rv = { defs="", code="", rgb=null, f=null }
+	if !generated:
+		rv.defs = "float "+name+"_f(vec2 uv) { return sine(uv, "+str(waves)+", "+str(sharpness)+"); }\n"
+		generated = true
+	rv.f = name+"_f("+uv+")"
+	return rv
+
+func _on_Count_text_changed(new_text):
+	waves = float(new_text)
+	get_parent().get_parent().generate_shader()
+
+func _on_Sharpness_text_changed(new_text):
+	sharpness = float(new_text)
+	get_parent().get_parent().generate_shader()

addons/procedural_material/sine.tscn

@@ -0,0 +1,104 @@
+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://addons/procedural_material/sine.gd" type="Script" id=1]
+
+[sub_resource type="Theme" id=1]
+
+
+[node name="Sine" type="GraphNode" index="0"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_top = 1.0
+margin_right = 133.0
+margin_bottom = 163.0
+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 = "Sine"
+offset = Vector2( 0, 0 )
+show_close = true
+resizable = false
+selected = false
+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/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_type = 0
+slot/1/left_color = Color( 1, 1, 1, 1 )
+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" ]
+
+[node name="Count" 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 = 117.0
+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 = "1"
+focus_mode = 2
+context_menu_enabled = true
+placeholder_alpha = 0.6
+caret_blink = false
+caret_blink_speed = 0.65
+caret_position = 0
+_sections_unfolded = [ "Caret", "Placeholder" ]
+
+[node name="Sharpness" type="LineEdit" 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 = 48.0
+margin_right = 117.0
+margin_bottom = 72.0
+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 = "1"
+focus_mode = 2
+context_menu_enabled = true
+placeholder_alpha = 0.6
+caret_blink = false
+caret_blink_speed = 0.65
+caret_position = 0
+_sections_unfolded = [ "Caret", "Placeholder" ]
+
+[connection signal="close_request" from="." to="." method="queue_free"]
+
+[connection signal="text_changed" from="Count" to="." method="_on_Count_text_changed"]
+
+[connection signal="text_changed" from="Sharpness" to="." method="_on_Sharpness_text_changed"]
+
+

addons/procedural_material/transform.gd

@@ -0,0 +1,25 @@
+tool
+extends "res://addons/procedural_material/node_base.gd"
+
+var angle = 0.0
+
+func _ready():
+	set_slot(0, true, 0, Color(0.5, 0.5, 1), true, 0, Color(0.5, 0.5, 1))
+
+func get_shader_code(uv):
+	var rv = { defs="", code="", uv=null, rgb=null, f=null }
+	var src = get_source()
+	if src == null:
+		return rv
+	rv.uv = name+"_uv("+uv+")"
+	var src_code = src.get_shader_code(rv.uv)
+	if !generated:
+		rv.defs = src_code.defs+"vec2 "+name+"_uv(vec2 uv) { return rotate(uv, "+str(angle)+"); }\n"
+		generated = true
+	rv.f = src_code.f
+	rv.rgb = src_code.rgb
+	return rv
+
+func _on_Rotate_text_changed(new_text):
+	angle = float(new_text)*3.1415928/180.0
+	get_parent().get_parent().generate_shader()

addons/procedural_material/transform.tscn

@@ -0,0 +1,71 @@
+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://addons/procedural_material/transform.gd" type="Script" id=1]
+
+[sub_resource type="Theme" id=1]
+
+
+[node name="Transform" type="GraphNode" index="0"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 329.0
+margin_top = 117.0
+margin_right = 462.0
+margin_bottom = 279.0
+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 = "Transform"
+offset = Vector2( 0, 0 )
+show_close = true
+resizable = false
+selected = false
+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/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" ]
+
+[node name="Rotate" 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 = 117.0
+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 = "0"
+focus_mode = 2
+context_menu_enabled = true
+placeholder_alpha = 0.6
+caret_blink = false
+caret_blink_speed = 0.65
+caret_position = 0
+_sections_unfolded = [ "Caret", "Placeholder" ]
+
+[connection signal="close_request" from="." to="." method="queue_free"]
+
+[connection signal="text_changed" from="Rotate" to="." method="_on_Rotate_text_changed"]
+
+

default_env.tres

@@ -0,0 +1,5 @@
+[gd_resource type="Environment" load_steps=2 format=2]
+[sub_resource type="ProceduralSky" id=1]
+[resource]
+background_mode = 2
+background_sky = SubResource( 1 )

icon.png.import

@@ -0,0 +1,29 @@
+[remap]
+
+importer="texture"
+type="StreamTexture"
+path="res://.import/icon.png-487276ed1e3a0c39cad0279d744ee560.stex"
+
+[deps]
+
+source_file="res://icon.png"
+dest_files=[ "res://.import/icon.png-487276ed1e3a0c39cad0279d744ee560.stex" ]
+
+[params]
+
+compress/mode=0
+compress/lossy_quality=0.7
+compress/hdr_mode=0
+compress/normal_map=0
+flags/repeat=0
+flags/filter=true
+flags/mipmaps=false
+flags/anisotropic=false
+flags/srgb=2
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/HDR_as_SRGB=false
+stream=false
+size_limit=0
+detect_3d=true
+svg/scale=1.0

project.godot

@@ -0,0 +1,22 @@
+; Engine configuration file.
+; It's best edited using the editor UI and not directly,
+; since the parameters that go here are not all obvious.
+;
+; Format:
+;   [section] ; section goes between []
+;   param=value ; assign values to parameters
+
+config_version=3
+
+[application]
+
+config/name="Procedural textures addon"
+config/icon="res://icon.png"
+
+[editor_plugins]
+
+enabled=PoolStringArray( "procedural_material" )
+
+[rendering]
+
+environment/default_environment="res://default_env.tres"