built more assets and started playing with foliage painting

addons/terrain_3d/LICENSE.txt

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2024 Cory Petkovsek, Roope Palmroos, and Contributors.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

addons/terrain_3d/README.md

@@ -0,0 +1,56 @@
+![Terrain3D Logo](/doc/docs/images/terrain3d.jpg)
+
+# Terrain3D
+A high performance, editable terrain system for Godot 4.
+
+## Features
+* Written in C++ as a GDExtension addon, which works with official engine builds
+* Can be accessed by GDScript, C#, and any language Godot supports
+* Geometric Clipmap Mesh Terrain, as used in The Witcher 3. See [System Architecture](https://terrain3d.readthedocs.io/en/stable/docs/system_architecture.html) 
+* Terrains as small as 64x64m up to 65.5x65.5km (4295km^2) in variable sized regions
+* Up to 32 textures
+* Up to 10 levels of detail
+* Foliage instancing
+* Sculpting, holes, texture painting, texture detiling, painting colors and wetness
+* Imports heightmaps from [HTerrain](https://github.com/Zylann/godot_heightmap_plugin/), WorldMachine, Unity, Unreal and any tool that can export a heightmap (raw/r16/exr/+). See [importing data](https://terrain3d.readthedocs.io/en/stable/docs/import_export.html)
+
+See [Project Status](https://terrain3d.readthedocs.io/en/stable/docs/project_status.html) for details.
+
+## Getting Started
+
+1. Read the [Installation & Upgrades](https://terrain3d.readthedocs.io/en/stable/docs/installation.html) instructions.
+
+2. For support, read [Getting Help](https://terrain3d.readthedocs.io/en/stable/docs/getting_help.html) or join our [Discord server](https://tokisan.com/discord).
+
+3. Watch the tutorial videos:
+
+**Installation, Setup, Basic Usage**
+
+[![Using Terrain3D - Part 1](https://i.ytimg.com/vi/oV8c9alXVwU/hqdefault.jpg)](https://youtu.be/oV8c9alXVwU)
+
+**Texture Painting, Holes, Navigation, Advanced Usage**
+
+[![Using Terrain3D - Part 2](https://i.ytimg.com/vi/YtiAI2F6Xkk/hqdefault.jpg)](https://youtu.be/YtiAI2F6Xkk)
+
+
+## Credit
+Developed for the Godot community by:
+
+|||
+|--|--|
+| **Cory Petkovsek, Tokisan Games** | [<img src="https://github.com/dmhendricks/signature-social-icons/blob/master/icons/round-flat-filled/35px/twitter.png?raw=true" width="24"/>](https://twitter.com/TokisanGames) [<img src="https://github.com/dmhendricks/signature-social-icons/blob/master/icons/round-flat-filled/35px/github.png?raw=true" width="24"/>](https://github.com/TokisanGames) [<img src="https://github.com/dmhendricks/signature-social-icons/blob/master/icons/round-flat-filled/35px/www.png?raw=true" width="24"/>](https://tokisan.com/) [<img src="https://github.com/dmhendricks/signature-social-icons/blob/master/icons/round-flat-filled/35px/discord.png?raw=true" width="24"/>](https://tokisan.com/discord) [<img src="https://github.com/dmhendricks/signature-social-icons/blob/master/icons/round-flat-filled/35px/youtube.png?raw=true" width="24"/>](https://www.youtube.com/@TokisanGames)|
+| **Roope Palmroos, Outobugi Games** | [<img src="https://github.com/dmhendricks/signature-social-icons/blob/master/icons/round-flat-filled/35px/twitter.png?raw=true" width="24"/>](https://twitter.com/outobugi) [<img src="https://github.com/dmhendricks/signature-social-icons/blob/master/icons/round-flat-filled/35px/github.png?raw=true" width="24"/>](https://github.com/outobugi) [<img src="https://github.com/dmhendricks/signature-social-icons/blob/master/icons/round-flat-filled/35px/www.png?raw=true" width="24"/>](https://outobugi.com/) [<img src="https://github.com/dmhendricks/signature-social-icons/blob/master/icons/round-flat-filled/35px/youtube.png?raw=true" width="24"/>](https://www.youtube.com/@outobugi)|
+
+And other contributors displayed on the right of the github page and in [AUTHORS.md](https://github.com/TokisanGames/Terrain3D/blob/main/AUTHORS.md).
+
+Geometry clipmap mesh code created by [Mike J. Savage](https://mikejsavage.co.uk/blog/geometry-clipmaps.html). Blog and repository code released under the MIT license per email communication with Mike.
+
+## Contributing
+
+Please see [CONTRIBUTING.md](https://github.com/TokisanGames/Terrain3D/blob/main/CONTRIBUTING.md) if you would like to help make Terrain3D the best terrain system for Godot.
+
+
+## License
+
+This addon has been released under the [MIT License](https://github.com/TokisanGames/Terrain3D/blob/main/LICENSE.txt).
+

addons/terrain_3d/editor.gd

@@ -0,0 +1,413 @@
+@tool
+extends EditorPlugin
+#class_name Terrain3DEditorPlugin Cannot be named until Godot #75388
+
+
+# Includes
+const UI: Script = preload("res://addons/terrain_3d/src/ui.gd")
+const RegionGizmo: Script = preload("res://addons/terrain_3d/src/region_gizmo.gd")
+const ASSET_DOCK: String = "res://addons/terrain_3d/src/asset_dock.tscn"
+
+var modifier_ctrl: bool
+var modifier_alt: bool
+var modifier_shift: bool
+var _last_modifiers: int = 0
+var _input_mode: int = 0 # -1: camera move, 0: none, 1: operating
+
+var terrain: Terrain3D
+var _last_terrain: Terrain3D
+var nav_region: NavigationRegion3D
+
+var editor: Terrain3DEditor
+var editor_settings: EditorSettings
+var ui: Node # Terrain3DUI see Godot #75388
+var asset_dock: PanelContainer
+var region_gizmo: RegionGizmo
+var current_region_position: Vector2
+var mouse_global_position: Vector3 = Vector3.ZERO
+var godot_editor_window: Window # The Godot Editor window
+
+
+func _init() -> void:
+	# Get the Godot Editor window. Structure is root:Window/EditorNode/Base Control
+	godot_editor_window = EditorInterface.get_base_control().get_parent().get_parent()
+	godot_editor_window.focus_entered.connect(_on_godot_focus_entered)
+
+	
+func _enter_tree() -> void:
+	editor = Terrain3DEditor.new()
+	setup_editor_settings()
+	ui = UI.new()
+	ui.plugin = self
+	add_child(ui)
+
+	region_gizmo = RegionGizmo.new()
+
+	scene_changed.connect(_on_scene_changed)
+
+	asset_dock = load(ASSET_DOCK).instantiate()
+	asset_dock.initialize(self)
+
+
+func _exit_tree() -> void:
+	asset_dock.remove_dock(true)
+	asset_dock.queue_free()
+	ui.queue_free()
+	editor.free()
+
+	scene_changed.disconnect(_on_scene_changed)
+	godot_editor_window.focus_entered.disconnect(_on_godot_focus_entered)
+
+
+func _on_godot_focus_entered() -> void:
+	_read_input()
+	ui.update_decal()
+
+
+## EditorPlugin selection function call chain isn't consistent. Here's the map of calls:
+## Assume we handle Terrain3D and NavigationRegion3D  
+# Click Terrain3D: 					_handles(Terrain3D), _make_visible(true), _edit(Terrain3D)
+# Deselect:							_make_visible(false), _edit(null)
+# Click other node:					_handles(OtherNode)
+# Click NavRegion3D:				_handles(NavReg3D), _make_visible(true), _edit(NavReg3D)
+# Click NavRegion3D, Terrain3D:		_handles(Terrain3D), _edit(Terrain3D)
+# Click Terrain3D, NavRegion3D:		_handles(NavReg3D), _edit(NavReg3D)
+func _handles(p_object: Object) -> bool:
+	if p_object is Terrain3D:
+		return true
+	elif p_object is NavigationRegion3D and is_instance_valid(_last_terrain):
+		return true
+	
+	# Terrain3DObjects requires access to EditorUndoRedoManager. The only way to make sure it
+	# always has it, is to pass it in here. _edit is NOT called if the node is cut and pasted.
+	elif p_object is Terrain3DObjects:
+		p_object.editor_setup(self)
+	elif p_object is Node3D and p_object.get_parent() is Terrain3DObjects:
+		p_object.get_parent().editor_setup(self)
+	
+	return false
+
+
+func _make_visible(p_visible: bool, p_redraw: bool = false) -> void:
+	if p_visible and is_selected():
+		ui.set_visible(true)
+		asset_dock.update_dock()
+	else:
+		ui.set_visible(false)
+
+
+func _edit(p_object: Object) -> void:
+	if !p_object:
+		_clear()
+
+	if p_object is Terrain3D:
+		if p_object == terrain:
+			return
+		terrain = p_object
+		_last_terrain = terrain
+		terrain.set_plugin(self)
+		terrain.set_editor(editor)
+		editor.set_terrain(terrain)
+		region_gizmo.set_node_3d(terrain)
+		terrain.add_gizmo(region_gizmo)
+		ui.set_visible(true)
+		terrain.set_meta("_edit_lock_", true)
+
+		# Deprecated 0.9.3 - Remove 1.0
+		if terrain.storage:
+			ui.terrain_menu.directory_setup.directory_setup_popup()
+		
+		# Get alerted when a new asset list is loaded
+		if not terrain.assets_changed.is_connected(asset_dock.update_assets):
+			terrain.assets_changed.connect(asset_dock.update_assets)
+		asset_dock.update_assets()
+		# Get alerted when the region map changes
+		if not terrain.data.region_map_changed.is_connected(update_region_grid):
+			terrain.data.region_map_changed.connect(update_region_grid)
+		update_region_grid()
+	else:
+		_clear()
+
+	if is_terrain_valid(_last_terrain):
+		if p_object is NavigationRegion3D:
+			ui.set_visible(true, true)
+			nav_region = p_object
+		else:
+			nav_region = null
+
+	
+func _clear() -> void:
+	if is_terrain_valid():
+		if terrain.data.region_map_changed.is_connected(update_region_grid):
+			terrain.data.region_map_changed.disconnect(update_region_grid)
+		
+		terrain.clear_gizmos()
+		terrain = null
+		editor.set_terrain(null)
+		
+		ui.clear_picking()
+		
+	region_gizmo.clear()
+
+
+func _forward_3d_gui_input(p_viewport_camera: Camera3D, p_event: InputEvent) -> int:
+	if not is_terrain_valid():
+		return AFTER_GUI_INPUT_PASS
+	
+	_read_input(p_event)
+	
+	## Handle mouse movement
+	if p_event is InputEventMouseMotion:
+		## Setup active camera & viewport
+
+		# Snap terrain to current camera 
+		terrain.set_camera(p_viewport_camera)
+
+		# Detect if viewport is set to half_resolution
+		# Structure is: Node3DEditorViewportContainer/Node3DEditorViewport(4)/SubViewportContainer/SubViewport/Camera3D
+		var editor_vpc: SubViewportContainer = p_viewport_camera.get_parent().get_parent()
+		var full_resolution: bool = false if editor_vpc.stretch_shrink == 2 else true
+
+		## Get mouse location on terrain
+		
+		# Project 2D mouse position to 3D position and direction
+		var mouse_pos: Vector2 = p_event.position if full_resolution else p_event.position/2
+		var camera_pos: Vector3 = p_viewport_camera.project_ray_origin(mouse_pos)
+		var camera_dir: Vector3 = p_viewport_camera.project_ray_normal(mouse_pos)
+
+		# If region tool, grab mouse position without considering height
+		if editor.get_tool() == Terrain3DEditor.REGION:
+			var t = -Vector3(0, 1, 0).dot(camera_pos) / Vector3(0, 1, 0).dot(camera_dir)
+			mouse_global_position = (camera_pos + t * camera_dir)
+		else:			
+			# Else look for intersection with terrain
+			var intersection_point: Vector3 = terrain.get_intersection(camera_pos, camera_dir)
+			if intersection_point.z > 3.4e38 or is_nan(intersection_point.y): # max double or nan
+				return AFTER_GUI_INPUT_STOP
+			mouse_global_position = intersection_point
+
+		ui.update_decal()
+
+		if _input_mode != -1: # Not cam rotation
+			## Update region highlight
+			var region_position: Vector2 = ( Vector2(mouse_global_position.x, mouse_global_position.z) \
+				/ (terrain.get_region_size() * terrain.get_vertex_spacing()) ).floor()
+			if current_region_position != region_position:
+				current_region_position = region_position
+				update_region_grid()
+
+			if _input_mode > 0 and editor.is_operating():
+				# Inject pressure - Relies on C++ set_brush_data() using same dictionary instance
+				ui.brush_data["mouse_pressure"] = p_event.pressure
+
+				editor.operate(mouse_global_position, p_viewport_camera.rotation.y)
+				return AFTER_GUI_INPUT_STOP
+			
+		return AFTER_GUI_INPUT_PASS
+
+	ui.update_decal()
+
+	if p_event is InputEventMouseButton and _input_mode > 0:
+		if p_event.is_pressed():
+			# If picking
+			if ui.is_picking():
+				ui.pick(mouse_global_position)
+				if not ui.operation_builder or not ui.operation_builder.is_ready():
+					return AFTER_GUI_INPUT_STOP
+			
+			# If adjusting regions
+			if editor.get_tool() == Terrain3DEditor.REGION:
+				# Skip regions that already exist or don't
+				var has_region: bool = terrain.data.has_regionp(mouse_global_position)
+				var op: int = editor.get_operation()
+				if	( has_region and op == Terrain3DEditor.ADD) or \
+					( not has_region and op == Terrain3DEditor.SUBTRACT ):
+					return AFTER_GUI_INPUT_STOP
+			
+			# If an automatic operation is ready to go (e.g. gradient)
+			if ui.operation_builder and ui.operation_builder.is_ready():
+				ui.operation_builder.apply_operation(editor, mouse_global_position, p_viewport_camera.rotation.y)
+				return AFTER_GUI_INPUT_STOP
+			
+			# Mouse clicked, start editing
+			editor.start_operation(mouse_global_position)
+			editor.operate(mouse_global_position, p_viewport_camera.rotation.y)
+			return AFTER_GUI_INPUT_STOP
+		
+		# _input_apply released, save undo data
+		elif editor.is_operating():
+			editor.stop_operation()
+			return AFTER_GUI_INPUT_STOP
+
+	return AFTER_GUI_INPUT_PASS
+
+
+func _read_input(p_event: InputEvent = null) -> void:
+	## Determine if user is moving camera or applying
+	if Input.is_mouse_button_pressed(MOUSE_BUTTON_LEFT) or \
+		p_event is InputEventMouseButton and p_event.is_released() and \
+		p_event.get_button_index() == MOUSE_BUTTON_LEFT:
+			_input_mode = 1 
+	else:
+			_input_mode = 0
+	
+	match get_setting("editors/3d/navigation/navigation_scheme", 0):
+		2, 1: # Modo, Maya
+			if Input.is_mouse_button_pressed(MOUSE_BUTTON_RIGHT) or \
+	 			( Input.is_key_pressed(KEY_ALT) and Input.is_mouse_button_pressed(MOUSE_BUTTON_LEFT) ):
+					_input_mode = -1 
+			if p_event is InputEventMouseButton and p_event.is_released() and \
+				( p_event.get_button_index() == MOUSE_BUTTON_RIGHT or \
+				( Input.is_key_pressed(KEY_ALT) and p_event.get_button_index() == MOUSE_BUTTON_LEFT )):
+					ui.last_rmb_time = Time.get_ticks_msec()
+		0, _: # Godot
+			if Input.is_mouse_button_pressed(MOUSE_BUTTON_RIGHT) or \
+				Input.is_mouse_button_pressed(MOUSE_BUTTON_MIDDLE):
+					_input_mode = -1 
+			if p_event is InputEventMouseButton and p_event.is_released() and \
+				( p_event.get_button_index() == MOUSE_BUTTON_RIGHT or \
+				p_event.get_button_index() == MOUSE_BUTTON_MIDDLE ):
+					ui.last_rmb_time = Time.get_ticks_msec()
+	if _input_mode < 0:
+		return
+
+	## Determine modifiers pressed
+	modifier_shift = Input.is_key_pressed(KEY_SHIFT)
+	modifier_ctrl = Input.is_key_pressed(KEY_CTRL)
+	# Keybind enum: Alt,Space,Meta,Capslock
+	var alt_key: int
+	match get_setting("terrain3d/config/alt_key_bind", 0):
+		3: alt_key = KEY_CAPSLOCK
+		2: alt_key = KEY_META
+		1: alt_key = KEY_SPACE
+		0, _: alt_key = KEY_ALT
+	modifier_alt = Input.is_key_pressed(alt_key)
+
+	# Return if modifiers haven't changed AND brush_data has them;
+	# modifiers disappear from brush_data when clicking asset_dock (Why?)
+	var current_mods: int = int(modifier_shift) | int(modifier_ctrl) << 1 | int(modifier_alt) << 2
+	if _last_modifiers == current_mods and ui.brush_data.has("modifier_shift"):
+		return
+	
+	_last_modifiers = current_mods
+	ui.brush_data["modifier_shift"] = modifier_shift
+	ui.brush_data["modifier_ctrl"] = modifier_ctrl
+	ui.brush_data["modifier_alt"] = modifier_alt
+	ui.update_modifiers()
+
+
+func update_region_grid() -> void:
+	if not region_gizmo:
+		return
+	region_gizmo.set_hidden(not ui.visible)
+
+	if is_terrain_valid():
+		region_gizmo.show_rect = editor.get_tool() == Terrain3DEditor.REGION
+		region_gizmo.use_secondary_color = editor.get_operation() == Terrain3DEditor.SUBTRACT
+		region_gizmo.region_position = current_region_position
+		region_gizmo.region_size = terrain.get_region_size() * terrain.get_vertex_spacing()
+		region_gizmo.grid = terrain.get_data().get_region_locations()
+		
+		terrain.update_gizmos()
+		return
+		
+	region_gizmo.show_rect = false
+	region_gizmo.region_size = 1024
+	region_gizmo.grid = [Vector2i.ZERO]
+
+
+func _on_scene_changed(scene_root: Node) -> void:
+	if not scene_root:
+		return
+		
+	for node in scene_root.find_children("", "Terrain3DObjects"):
+		node.editor_setup(self)
+
+	asset_dock.update_assets()
+	await get_tree().create_timer(2).timeout
+	asset_dock.update_thumbnails()
+
+		
+func is_terrain_valid(p_terrain: Terrain3D = null) -> bool:
+	var t: Terrain3D
+	if p_terrain:
+		t = p_terrain
+	else:
+		t = terrain
+	if is_instance_valid(t) and t.is_inside_tree() and t.data:
+		return true
+	return false
+
+
+func is_selected() -> bool:
+	var selected: Array[Node] = EditorInterface.get_selection().get_selected_nodes()
+	for node in selected:
+		if ( is_instance_valid(_last_terrain) and node.get_instance_id() == _last_terrain.get_instance_id() ) or \
+			node is Terrain3D:
+				return true
+	return false	
+
+
+func select_terrain() -> void:
+	if is_instance_valid(_last_terrain) and is_terrain_valid(_last_terrain) and not is_selected():
+		var es: EditorSelection = EditorInterface.get_selection()
+		es.clear()
+		es.add_node(_last_terrain)
+
+
+## Editor Settings
+
+
+func setup_editor_settings() -> void:
+	editor_settings = EditorInterface.get_editor_settings()
+	if not editor_settings.has_setting("terrain3d/config/alt_key_bind"):
+		editor_settings.set("terrain3d/config/alt_key_bind", 0)
+	var property_info = {
+		"name": "terrain3d/config/alt_key_bind",
+		"type": TYPE_INT,
+		"hint": PROPERTY_HINT_ENUM,
+		"hint_string": "Alt,Space,Meta,Capslock"
+	}
+	editor_settings.add_property_info(property_info)
+
+	_cleanup_old_settings()
+
+	
+# Remove or rename old settings
+func _cleanup_old_settings() -> void:
+	# Rename deprecated settings - Remove in 1.0
+	var value: Variant
+	var rename_arr := [ "terrain3d/config/dock_slot", "terrain3d/config/dock_tile_size", 
+	"terrain3d/config/dock_floating", "terrain3d/config/dock_always_on_top",
+	"terrain3d/config/dock_window_size", "terrain3d/config/dock_window_position", ]
+	for es: String in rename_arr:
+		if editor_settings.has_setting(es):
+			value = editor_settings.get_setting(es)
+			editor_settings.erase(es)
+			editor_settings.set_setting(es.replace("/config/dock_", "/dock/"), value)
+
+	# Special handling
+	var es: String = "terrain3d/tool_settings/slope"
+	if editor_settings.has_setting(es):
+		value = editor_settings.get_setting(es)
+		if typeof(value) == TYPE_FLOAT:
+			editor_settings.erase(es)
+	
+
+func set_setting(p_str: String, p_value: Variant) -> void:
+	editor_settings.set_setting(p_str, p_value)
+
+
+func get_setting(p_str: String, p_default: Variant) -> Variant:
+	if editor_settings.has_setting(p_str):
+		return editor_settings.get_setting(p_str)
+	else:
+		return p_default
+
+
+func has_setting(p_str: String) -> bool:
+	return editor_settings.has_setting(p_str)
+
+
+func erase_setting(p_str: String) -> void:
+	editor_settings.erase(p_str)

addons/terrain_3d/extras/import_sgt.gd

@@ -0,0 +1,41 @@
+## Import From SimpleGrassTextured
+# 
+# This script demonstrates how to import transforms from SimpleGrassTextured. To use it:
+#
+# 1. Setup the mesh asset you wish to use in the asset dock.
+# 1. Select your Terrain3D node.
+# 1. In the inspector, click Script (very bottom) and Quick Load import_sgt.gd.
+# 1. At the very top, assign your SimpleGrassTextured node.
+# 1. Input the desired mesh asset ID.
+# 1. Click import. The output window and console will report when finished.
+# 1. Clear the script from your Terrain3D node, and save your scene. 
+#
+# The instance transforms are now stored in your region files.
+#
+# Use clear_instances to erase all instances that match the assign_mesh_id.
+#
+# The add_transforms function (called by add_multimesh) applies the height_offset specified in the 
+# Terrain3DMeshAsset. 
+# Once the transforms are imported, you can reassign any mesh you like into this mesh slot.
+
+@tool
+extends Terrain3D
+
+@export var simple_grass_textured: MultiMeshInstance3D
+@export var assign_mesh_id: int
+@export var import: bool = false : set = import_sgt
+@export var clear_instances: bool = false : set = clear_multimeshes
+
+
+func clear_multimeshes(value: bool) -> void:
+	get_instancer().clear_by_mesh(assign_mesh_id)
+
+
+func import_sgt(value: bool) -> void:
+	var sgt_mm: MultiMesh = simple_grass_textured.multimesh
+	var global_xform: Transform3D = simple_grass_textured.global_transform	
+	print("Starting to import %d instances from SimpleGrassTextured using mesh id %d" % [ sgt_mm.instance_count, assign_mesh_id])
+	var time: int = Time.get_ticks_msec()
+	get_instancer().add_multimesh(assign_mesh_id, sgt_mm, simple_grass_textured.global_transform)	
+	print("Import complete in %.2f seconds" % [ float(Time.get_ticks_msec() - time)/1000. ])
+	

addons/terrain_3d/extras/minimum.gdshader

@@ -0,0 +1,164 @@
+// This shader is the minimum needed to allow the terrain to function, without any texturing.
+
+shader_type spatial;
+render_mode blend_mix,depth_draw_opaque,cull_back,diffuse_burley,specular_schlick_ggx,skip_vertex_transform;
+
+// Private uniforms
+uniform float _region_size = 1024.0;
+uniform float _region_texel_size = 0.0009765625; // = 1/1024
+uniform float _vertex_spacing = 1.0;
+uniform float _vertex_density = 1.0; // = 1/_vertex_spacing
+uniform int _region_map_size = 32;
+uniform int _region_map[1024];
+uniform vec2 _region_locations[1024];
+uniform sampler2DArray _height_maps : repeat_disable;
+uniform usampler2DArray _control_maps : repeat_disable;
+uniform sampler2DArray _color_maps : source_color, filter_linear_mipmap_anisotropic, repeat_disable;
+uniform sampler2DArray _texture_array_albedo : source_color, filter_linear_mipmap_anisotropic, repeat_enable;
+uniform sampler2DArray _texture_array_normal : hint_normal, filter_linear_mipmap_anisotropic, repeat_enable;
+uniform sampler2D noise_texture : source_color, filter_linear_mipmap_anisotropic, repeat_enable;
+
+uniform float _texture_uv_scale_array[32];
+uniform float _texture_detile_array[32];
+uniform vec4 _texture_color_array[32];
+uniform uint _background_mode = 1u;  // NONE = 0, FLAT = 1, NOISE = 2
+uniform uint _mouse_layer = 0x80000000u; // Layer 32
+
+// Public uniforms
+uniform float vertex_normals_distance : hint_range(0, 1024) = 128.0;
+
+// Varyings & Types
+varying flat vec3 v_vertex;	// World coordinate vertex location
+varying flat vec3 v_camera_pos;
+varying float v_vertex_xz_dist;
+varying flat ivec3 v_region;
+varying flat vec2 v_uv_offset;
+varying flat vec2 v_uv2_offset;
+varying vec3 v_normal;
+varying float v_region_border_mask;
+
+////////////////////////
+// Vertex
+////////////////////////
+
+// Takes in UV world space coordinates, returns ivec3 with:
+// XY: (0 to _region_size) coordinates within a region
+// Z: layer index used for texturearrays, -1 if not in a region
+ivec3 get_region_uv(const vec2 uv) {
+	ivec2 pos = ivec2(floor(uv * _region_texel_size)) + (_region_map_size / 2);
+	int bounds = int(uint(pos.x | pos.y) < uint(_region_map_size));
+	int layer_index = _region_map[ pos.y * _region_map_size + pos.x ] * bounds - 1;
+	return ivec3(ivec2(mod(uv,_region_size)), layer_index);
+}
+
+// Takes in UV2 region space coordinates, returns vec3 with:
+// XY: (0 to 1) coordinates within a region
+// Z: layer index used for texturearrays, -1 if not in a region
+vec3 get_region_uv2(const vec2 uv2) {
+	// Remove Texel Offset to ensure correct region index.
+	ivec2 pos = ivec2(floor(uv2 - vec2(_region_texel_size * 0.5))) + (_region_map_size / 2);
+	int bounds = int(uint(pos.x | pos.y) < uint(_region_map_size));
+	int layer_index = _region_map[ pos.y * _region_map_size + pos.x ] * bounds - 1;
+	return vec3(uv2 - _region_locations[layer_index], float(layer_index));
+}
+
+// 1 lookup
+float get_height(vec2 uv) {
+	highp float height = 0.0;
+	vec3 region = get_region_uv2(uv);
+	if (region.z >= 0.) {
+		height = texture(_height_maps, region).r;
+	}
+ 	return height;
+}
+
+void vertex() {
+	// Get camera pos in world vertex coords
+	v_camera_pos = INV_VIEW_MATRIX[3].xyz;
+
+	// Get vertex of flat plane in world coordinates and set world UV
+	v_vertex = (MODEL_MATRIX * vec4(VERTEX, 1.0)).xyz;
+
+	// Camera distance to vertex on flat plane
+	v_vertex_xz_dist = length(v_vertex.xz - v_camera_pos.xz);
+
+	// UV coordinates in world space. Values are 0 to _region_size within regions
+	UV = round(v_vertex.xz * _vertex_density);
+
+	// UV coordinates in region space + texel offset. Values are 0 to 1 within regions
+	UV2 = fma(UV, vec2(_region_texel_size), vec2(0.5 * _region_texel_size));
+
+	// Discard vertices for Holes. 1 lookup
+	v_region = get_region_uv(UV);
+	uint control = texelFetch(_control_maps, v_region, 0).r;
+	bool hole = bool(control >>2u & 0x1u);
+
+	// Show holes to all cameras except mouse camera (on exactly 1 layer)
+	if ( !(CAMERA_VISIBLE_LAYERS == _mouse_layer) && 
+			(hole || (_background_mode == 0u && (get_region_uv(UV - _region_texel_size) & v_region).z < 0))) {
+		VERTEX.x = 0. / 0.;
+	} else {		
+		// Set final vertex height & calculate vertex normals. 3 lookups.
+		VERTEX.y = get_height(UV2);
+		v_vertex.y = VERTEX.y;
+		v_normal = vec3(
+			v_vertex.y - get_height(UV2 + vec2(_region_texel_size, 0)),
+			_vertex_spacing,
+			v_vertex.y - get_height(UV2 + vec2(0, _region_texel_size))
+		);
+		// Due to a bug caused by the GPUs linear interpolation across edges of region maps,
+		// mask region edges and use vertex normals only across region boundaries.
+		v_region_border_mask = mod(UV.x + 2.5, _region_size) - fract(UV.x) < 5.0 || mod(UV.y + 2.5, _region_size) - fract(UV.y) < 5.0 ? 1. : 0.;
+	}
+		
+	// Transform UVs to local to avoid poor precision during varying interpolation.
+	v_uv_offset = MODEL_MATRIX[3].xz * _vertex_density;
+	UV -= v_uv_offset;
+	v_uv2_offset = v_uv_offset * _region_texel_size;
+	UV2 -= v_uv2_offset;
+
+	// Convert model space to view space w/ skip_vertex_transform render mode
+	VERTEX = (MODEL_MATRIX * vec4(VERTEX, 1.0)).xyz;
+	VERTEX = (VIEW_MATRIX * vec4(VERTEX, 1.0)).xyz;
+	NORMAL = normalize((MODELVIEW_MATRIX * vec4(NORMAL, 0.0)).xyz);
+	BINORMAL = normalize((MODELVIEW_MATRIX * vec4(BINORMAL, 0.0)).xyz);
+	TANGENT = normalize((MODELVIEW_MATRIX * vec4(TANGENT, 0.0)).xyz);
+}
+
+////////////////////////
+// Fragment
+////////////////////////
+
+// 0 - 3 lookups
+vec3 get_normal(vec2 uv, out vec3 tangent, out vec3 binormal) {
+	float u, v, height;
+	vec3 normal;
+	// Use vertex normals within radius of vertex_normals_distance, and along region borders.
+	if (v_region_border_mask > 0.5 || v_vertex_xz_dist < vertex_normals_distance) {
+		normal = normalize(v_normal);
+	} else {
+		height = get_height(uv);
+		u = height - get_height(uv + vec2(_region_texel_size, 0));
+		v = height - get_height(uv + vec2(0, _region_texel_size));
+		normal = normalize(vec3(u, _vertex_spacing, v));
+	}
+	tangent = cross(normal, vec3(0, 0, 1));
+	binormal = cross(normal, tangent);
+	return normal;
+}
+
+void fragment() {
+	// Recover UVs
+	vec2 uv = UV + v_uv_offset;
+	vec2 uv2 = UV2 + v_uv2_offset;
+
+	// Calculate Terrain Normals. 4 lookups
+	vec3 w_tangent, w_binormal;
+	vec3 w_normal = get_normal(uv2, w_tangent, w_binormal);
+	NORMAL = mat3(VIEW_MATRIX) * w_normal;
+	TANGENT = mat3(VIEW_MATRIX) * w_tangent;
+	BINORMAL = mat3(VIEW_MATRIX) * w_binormal;
+
+	// Apply PBR
+	ALBEDO=vec3(.2);
+}

addons/terrain_3d/extras/project_on_terrain3d.gd

@@ -0,0 +1,90 @@
+# This script is an addon for HungryProton's Scatter https://github.com/HungryProton/scatter
+# It provides a `Project on Terrain3D` modifier, which allows Scatter 
+# to detect the terrain height from Terrain3D without using collision.
+# Copy this file into /addons/proton_scatter/src/modifiers
+# Then uncomment everything below
+# In the editor, add this modifier to Scatter, then set your Terrain3D node
+
+# This script is an addon for HungryProton's Scatter https://github.com/HungryProton/scatter
+# It allows Scatter to detect the terrain height from Terrain3D
+# Copy this file into /addons/proton_scatter/src/modifiers
+# Then uncomment everything below (select, press CTRL+K)
+# In the editor, add this modifier, then set your Terrain3D node
+
+#@tool
+#extends "base_modifier.gd"
+#
+#
+#signal projection_completed
+#
+#
+#@export var terrain_node : NodePath
+#@export var align_with_collision_normal := false
+#
+#var _terrain: Terrain3D
+#
+#
+#func _init() -> void:
+	#display_name = "Project On Terrain3D"
+	#category = "Edit"
+	#can_restrict_height = false
+	#global_reference_frame_available = true
+	#local_reference_frame_available = true
+	#individual_instances_reference_frame_available = true
+	#use_global_space_by_default()
+#
+	#documentation.add_paragraph(
+		#"This is a duplicate of `Project on Colliders` that queries the terrain system
+		#for height and sets the transform height appropriately.
+#
+		#This modifier must have terrain_node set to a Terrain3D node.")
+#
+	#var p := documentation.add_parameter("Terrain Node")
+	#p.set_type("NodePath")
+	#p.set_description("Set your Terrain3D node.")
+		#
+	#p = documentation.add_parameter("Align with collision normal")
+	#p.set_type("bool")
+	#p.set_description(
+		#"Rotate the transform to align it with the collision normal in case
+		#the ray cast hit a collider.")
+#
+#
+#func _process_transforms(transforms, domain, _seed) -> void:
+	#if transforms.is_empty():
+		#return
+#
+	#if terrain_node:
+		#_terrain = domain.get_root().get_node_or_null(terrain_node)
+#
+	#if not _terrain:
+		#warning += """No Terrain3D node found"""
+		#return
+#
+	#if not _terrain.data:
+		#warning += """Terrain3DData is not initialized"""
+		#return
+#
+	## Get global transform
+	#var gt: Transform3D = domain.get_global_transform()
+	#var gt_inverse := gt.affine_inverse()
+	#for i in transforms.list.size():
+		#var location: Vector3 = (gt * transforms.list[i]).origin
+		#var height: float = _terrain.data.get_height(location)
+		#var normal: Vector3 = _terrain.data.get_normal(location)
+		#
+		#if align_with_collision_normal and not is_nan(normal.x):
+			#transforms.list[i].basis.y = normal
+			#transforms.list[i].basis.x = -transforms.list[i].basis.z.cross(normal)
+			#transforms.list[i].basis = transforms.list[i].basis.orthonormalized()
+#
+		#transforms.list[i].origin.y = gt.origin.y if is_nan(height) else height - gt.origin.y
+#
+	#if transforms.is_empty():
+		#warning += """Every point has been removed. Possible reasons include: \n
+		#+ No collider is close enough to the shapes.
+		#+ Ray length is too short.
+		#+ Ray direction is incorrect.
+		#+ Collision mask is not set properly.
+		#+ Max slope is too low.
+		#"""

addons/terrain_3d/icons/autoshader.svg

@@ -0,0 +1,194 @@
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addons/terrain_3d/icons/autoshader.svg.import

@@ -0,0 +1,38 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://bdwolwswwy8wr"
+path="res://.godot/imported/autoshader.svg-9998e61bbc6afd5b134b767acd17a425.ctex"
+metadata={
+"has_editor_variant": true,
+"vram_texture": false
+}
+
+[deps]
+
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+dest_files=["res://.godot/imported/autoshader.svg-9998e61bbc6afd5b134b767acd17a425.ctex"]
+
+[params]
+
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+compress/channel_pack=0
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+process/size_limit=0
+detect_3d/compress_to=1
+svg/scale=1.0
+editor/scale_with_editor_scale=true
+editor/convert_colors_with_editor_theme=false

addons/terrain_3d/icons/color_paint.svg

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+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:cc="http://creativecommons.org/ns#"
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+uid="uid://16yfxe7xe703"
+path="res://.godot/imported/texture_spray.svg-326fee11cf418653e621bc222a470861.ctex"
+metadata={
+"has_editor_variant": true,
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://addons/terrain_3d/icons/texture_spray.svg"
+dest_files=["res://.godot/imported/texture_spray.svg-326fee11cf418653e621bc222a470861.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
+svg/scale=1.0
+editor/scale_with_editor_scale=true
+editor/convert_colors_with_editor_theme=false

addons/terrain_3d/icons/wetness.svg

@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generator: Adobe Illustrator 16.0.3, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg version="1.1"
+	 id="svg2" xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape" xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd" xmlns:svg="http://www.w3.org/2000/svg" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:cc="http://creativecommons.org/ns#" xmlns:dc="http://purl.org/dc/elements/1.1/" sodipodi:docname="icon_color.svg" inkscape:version="1.2.2 (732a01da63, 2022-12-09)"
+	 xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="16px" height="16px"
+	 viewBox="0 0 16 16" enable-background="new 0 0 16 16" xml:space="preserve">
+<defs>
+	
+	<inkscape:path-effect  lpeversion="1" effect="spiro" is_visible="true" id="path-effect8712"></inkscape:path-effect>
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+		</inkscape:path-effect>
+	
+		<inkscape:path-effect  step="1" helper_size="0" smooth_angles="0" threshold="0.0028332064" steps="1" lpeversion="1" effect="simplify" is_visible="true" id="path-effect8641" simplify_just_coalesce="false" simplify_individual_paths="false">
+		</inkscape:path-effect>
+	<inkscape:path-effect  lpeversion="1" effect="spiro" is_visible="true" id="path-effect5927"></inkscape:path-effect>
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+	<inkscape:path-effect  lpeversion="1" effect="spiro" is_visible="true" id="path-effect4245"></inkscape:path-effect>
+	<inkscape:path-effect  lpeversion="1" effect="spiro" is_visible="true" id="path-effect4977"></inkscape:path-effect>
+	<inkscape:path-effect  lpeversion="1" effect="spiro" is_visible="true" id="path-effect3156-0"></inkscape:path-effect>
+</defs>
+<sodipodi:namedview  inkscape:cy="9.4133584" inkscape:cx="7.5793003" inkscape:zoom="22.627418" showgrid="false" guidetolerance="10" gridtolerance="10" objecttolerance="10" borderopacity="1" bordercolor="#666666" pagecolor="#ffffff" id="namedview8" inkscape:deskcolor="#d1d1d1" inkscape:showpageshadow="0" inkscape:pagecheckerboard="0" inkscape:snap-to-guides="true" inkscape:snap-grids="false" inkscape:object-nodes="true" inkscape:snap-smooth-nodes="false" inkscape:object-paths="false" inkscape:current-layer="svg2" inkscape:window-maximized="1" inkscape:window-y="-8" inkscape:window-x="-8" inkscape:window-height="1009" inkscape:window-width="1920" inkscape:pageshadow="2" inkscape:pageopacity="0">
+	<inkscape:grid  type="xygrid" id="grid4140"></inkscape:grid>
+</sodipodi:namedview>
+<path id="path34808" fill="none" d="M-0.761-0.199h17.523v17.523H-0.761V-0.199z"/>
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+</svg>

addons/terrain_3d/icons/wetness.svg.import

@@ -0,0 +1,38 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://bcgg0srmqsh3n"
+path="res://.godot/imported/wetness.svg-9b2ddec096ab7734492b77b20c75c82b.ctex"
+metadata={
+"has_editor_variant": true,
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://addons/terrain_3d/icons/wetness.svg"
+dest_files=["res://.godot/imported/wetness.svg-9b2ddec096ab7734492b77b20c75c82b.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
+svg/scale=1.0
+editor/scale_with_editor_scale=true
+editor/convert_colors_with_editor_theme=false

addons/terrain_3d/plugin.cfg

@@ -0,0 +1,7 @@
+[plugin]
+
+name="Terrain3D"
+description="A high performance, editable terrain system for Godot 4."
+author="Cory Petkovsek & Roope Palmroos"
+version="0.9.3a"
+script="editor.gd"

addons/terrain_3d/src/asset_dock.gd

@@ -0,0 +1,836 @@
+@tool
+extends PanelContainer
+#class_name Terrain3DAssetDock
+
+signal confirmation_closed
+signal confirmation_confirmed
+signal confirmation_canceled
+
+const ES_DOCK_SLOT: String = "terrain3d/dock/slot"
+const ES_DOCK_TILE_SIZE: String = "terrain3d/dock/tile_size"
+const ES_DOCK_FLOATING: String = "terrain3d/dock/floating"
+const ES_DOCK_PINNED: String = "terrain3d/dock/always_on_top"
+const ES_DOCK_WINDOW_POSITION: String = "terrain3d/dock/window_position"
+const ES_DOCK_WINDOW_SIZE: String = "terrain3d/dock/window_size"
+const ES_DOCK_TAB: String = "terrain3d/dock/tab"
+
+var texture_list: ListContainer
+var mesh_list: ListContainer
+var _current_list: ListContainer
+var _last_thumb_update_time: int = 0
+const MAX_UPDATE_TIME: int = 1000
+
+var placement_opt: OptionButton
+var floating_btn: Button
+var pinned_btn: Button
+var size_slider: HSlider
+var box: BoxContainer
+var buttons: BoxContainer
+var textures_btn: Button
+var meshes_btn: Button
+var asset_container: ScrollContainer
+var confirm_dialog: ConfirmationDialog
+var _confirmed: bool = false
+
+# Used only for editor, so change to single visible/hiddden
+enum {
+	HIDDEN = -1,
+	SIDEBAR = 0,
+	BOTTOM = 1,
+	WINDOWED = 2,
+}
+var state: int = HIDDEN
+
+enum {
+	POS_LEFT_UL = 0,
+	POS_LEFT_BL = 1,
+	POS_LEFT_UR = 2,
+	POS_LEFT_BR = 3,
+	POS_RIGHT_UL = 4,
+	POS_RIGHT_BL = 5,
+	POS_RIGHT_UR = 6,
+	POS_RIGHT_BR = 7,
+	POS_BOTTOM = 8,
+	POS_MAX = 9,
+}
+var slot: int = POS_RIGHT_BR
+var _initialized: bool = false
+var plugin: EditorPlugin
+var window: Window
+var _godot_last_state: Window.Mode = Window.MODE_FULLSCREEN
+
+
+func initialize(p_plugin: EditorPlugin) -> void:
+	if p_plugin:
+		plugin = p_plugin
+	
+	_godot_last_state = plugin.godot_editor_window.mode
+	placement_opt = $Box/Buttons/PlacementOpt
+	pinned_btn = $Box/Buttons/Pinned
+	floating_btn = $Box/Buttons/Floating
+	floating_btn.owner = null
+	size_slider = $Box/Buttons/SizeSlider
+	size_slider.owner = null
+	box = $Box
+	buttons = $Box/Buttons
+	textures_btn = $Box/Buttons/TexturesBtn
+	meshes_btn = $Box/Buttons/MeshesBtn
+	asset_container = $Box/ScrollContainer
+
+	texture_list = ListContainer.new()
+	texture_list.plugin = plugin
+	texture_list.type = Terrain3DAssets.TYPE_TEXTURE
+	asset_container.add_child(texture_list)
+	mesh_list = ListContainer.new()
+	mesh_list.plugin = plugin
+	mesh_list.type = Terrain3DAssets.TYPE_MESH
+	mesh_list.visible = false
+	asset_container.add_child(mesh_list)
+	_current_list = texture_list
+
+	load_editor_settings()
+
+	# Connect signals
+	resized.connect(update_layout)
+	textures_btn.pressed.connect(_on_textures_pressed)
+	meshes_btn.pressed.connect(_on_meshes_pressed)
+	placement_opt.item_selected.connect(set_slot)
+	floating_btn.pressed.connect(make_dock_float)
+	pinned_btn.toggled.connect(_on_pin_changed)
+	pinned_btn.visible = ( window != null )
+	size_slider.value_changed.connect(_on_slider_changed)
+	plugin.ui.toolbar.tool_changed.connect(_on_tool_changed)
+
+	meshes_btn.add_theme_font_size_override("font_size", 16 * EditorInterface.get_editor_scale())
+	textures_btn.add_theme_font_size_override("font_size", 16 * EditorInterface.get_editor_scale())
+
+	_initialized = true
+	update_dock()
+	update_layout()
+
+
+func _ready() -> void:
+	if not _initialized:
+		return
+		
+	# Setup styles
+	set("theme_override_styles/panel", get_theme_stylebox("panel", "Panel"))
+	# Avoid saving icon resources in tscn when editing w/ a tool script
+	if EditorInterface.get_edited_scene_root() != self:
+		pinned_btn.icon = get_theme_icon("Pin", "EditorIcons")
+		pinned_btn.text = ""
+		floating_btn.icon = get_theme_icon("MakeFloating", "EditorIcons")
+		floating_btn.text = ""
+
+	update_thumbnails()
+	confirm_dialog = ConfirmationDialog.new()
+	add_child(confirm_dialog)
+	confirm_dialog.hide()
+	confirm_dialog.confirmed.connect(func(): _confirmed = true; \
+		emit_signal("confirmation_closed"); \
+		emit_signal("confirmation_confirmed") )
+	confirm_dialog.canceled.connect(func(): _confirmed = false; \
+		emit_signal("confirmation_closed"); \
+		emit_signal("confirmation_canceled") )
+
+
+func get_current_list() -> ListContainer:
+	return _current_list
+
+
+## Dock placement
+
+func set_slot(p_slot: int) -> void:
+	p_slot = clamp(p_slot, 0, POS_MAX-1)
+	
+	if slot != p_slot:
+		slot = p_slot
+		placement_opt.selected = slot
+		save_editor_settings()
+		plugin.select_terrain()
+		update_dock()
+
+
+func remove_dock(p_force: bool = false) -> void:
+	if state == SIDEBAR:
+		plugin.remove_control_from_docks(self)
+		state = HIDDEN
+
+	elif state == BOTTOM:
+		plugin.remove_control_from_bottom_panel(self)
+		state = HIDDEN
+
+	# If windowed and destination is not window or final exit, otherwise leave
+	elif state == WINDOWED and p_force and window:
+		var parent: Node = get_parent()
+		if parent:
+			parent.remove_child(self)
+		plugin.godot_editor_window.mouse_entered.disconnect(_on_godot_window_entered)
+		plugin.godot_editor_window.focus_entered.disconnect(_on_godot_focus_entered)
+		plugin.godot_editor_window.focus_exited.disconnect(_on_godot_focus_exited)
+		window.hide()
+		window.queue_free()
+		window = null
+		floating_btn.button_pressed = false
+		floating_btn.visible = true
+		pinned_btn.visible = false
+		placement_opt.visible = true
+		state = HIDDEN
+		update_dock() # return window to side/bottom
+
+
+func update_dock() -> void:
+	if not _initialized or window:
+		return
+
+	update_assets()
+
+	# Move dock to new destination
+	remove_dock()
+	# Sidebar
+	if slot < POS_BOTTOM:
+		state = SIDEBAR
+		plugin.add_control_to_dock(slot, self)
+	# Bottom
+	elif slot == POS_BOTTOM:
+		state = BOTTOM
+		plugin.add_control_to_bottom_panel(self, "Terrain3D")
+		plugin.make_bottom_panel_item_visible(self)
+
+
+func update_layout() -> void:
+	if not _initialized:
+		return
+
+	# Detect if we have a new window from Make floating, grab it so we can free it properly
+	if not window and get_parent() and get_parent().get_parent() is Window:
+		window = get_parent().get_parent()
+		make_dock_float()
+		return # Will call this function again upon display
+
+	var size_parent: Control = size_slider.get_parent()
+	# Vertical layout in window / sidebar
+	if window or slot < POS_BOTTOM:
+		box.vertical = true
+		buttons.vertical = false
+
+		if size.x >= 500 and size_parent != buttons:
+			size_slider.reparent(buttons)
+			buttons.move_child(size_slider, 3)
+		elif size.x < 500 and size_parent != box:
+			size_slider.reparent(box)
+			box.move_child(size_slider, 1)
+		floating_btn.reparent(buttons)
+		buttons.move_child(floating_btn, 4)
+
+	# Wide layout on bottom bar
+	else:
+		size_slider.reparent(buttons)
+		buttons.move_child(size_slider, 3)
+		floating_btn.reparent(box)
+		box.vertical = false
+		buttons.vertical = true
+
+	save_editor_settings()
+
+
+func update_thumbnails() -> void:
+	if not is_instance_valid(plugin.terrain):
+		return
+	if _current_list.type == Terrain3DAssets.TYPE_MESH and \
+			Time.get_ticks_msec() - _last_thumb_update_time > MAX_UPDATE_TIME:
+		plugin.terrain.assets.create_mesh_thumbnails()
+		_last_thumb_update_time = Time.get_ticks_msec()
+		for mesh_asset in mesh_list.entries:
+			mesh_asset.queue_redraw()
+
+
+## Dock Button handlers
+
+
+func _on_pin_changed(toggled: bool) -> void:
+	if window:
+		window.always_on_top = pinned_btn.button_pressed
+	save_editor_settings()
+
+
+func _on_slider_changed(value: float) -> void:
+	if texture_list:
+		texture_list.set_entry_width(value)
+	if mesh_list:
+		mesh_list.set_entry_width(value)
+	save_editor_settings()
+
+
+func _on_textures_pressed() -> void:
+	_current_list = texture_list
+	texture_list.update_asset_list()
+	texture_list.visible = true
+	mesh_list.visible = false
+	textures_btn.button_pressed = true
+	meshes_btn.button_pressed = false
+	texture_list.set_selected_id(texture_list.selected_id)
+	if plugin.is_terrain_valid():
+		EditorInterface.edit_node(plugin.terrain)
+	save_editor_settings()
+
+
+func _on_meshes_pressed() -> void:
+	_current_list = mesh_list
+	mesh_list.update_asset_list()
+	mesh_list.visible = true
+	texture_list.visible = false
+	meshes_btn.button_pressed = true
+	textures_btn.button_pressed = false
+	mesh_list.set_selected_id(mesh_list.selected_id)
+	if plugin.is_terrain_valid():
+		EditorInterface.edit_node(plugin.terrain)
+	update_thumbnails()
+	save_editor_settings()
+
+
+func _on_tool_changed(p_tool: Terrain3DEditor.Tool, p_operation: Terrain3DEditor.Operation) -> void:
+	if p_tool == Terrain3DEditor.INSTANCER:
+		_on_meshes_pressed()
+	elif p_tool in [ Terrain3DEditor.TEXTURE, Terrain3DEditor.COLOR, Terrain3DEditor.ROUGHNESS ]:
+		_on_textures_pressed()
+
+
+## Update Dock Contents
+
+
+func update_assets() -> void:
+	if not _initialized:
+		return
+	
+	# Verify signals to individual lists
+	if plugin.is_terrain_valid() and plugin.terrain.assets:
+		if not plugin.terrain.assets.textures_changed.is_connected(texture_list.update_asset_list):
+			plugin.terrain.assets.textures_changed.connect(texture_list.update_asset_list)
+		if not plugin.terrain.assets.meshes_changed.is_connected(mesh_list.update_asset_list):
+			plugin.terrain.assets.meshes_changed.connect(mesh_list.update_asset_list)
+
+	_current_list.update_asset_list()
+
+
+## Window Management
+
+
+func make_dock_float() -> void:
+	# If not already created (eg from editor panel 'Make Floating' button)	
+	if not window:
+		remove_dock()
+		create_window()
+
+	state = WINDOWED
+	visible = true # Asset dock contents are hidden when popping out of the bottom!
+	pinned_btn.visible = true
+	floating_btn.visible = false
+	placement_opt.visible = false
+	window.title = "Terrain3D Asset Dock"
+	window.always_on_top = pinned_btn.button_pressed
+	window.close_requested.connect(remove_dock.bind(true))
+	window.window_input.connect(_on_window_input)
+	window.focus_exited.connect(save_editor_settings)
+	window.mouse_exited.connect(save_editor_settings)
+	window.size_changed.connect(save_editor_settings)
+	plugin.godot_editor_window.mouse_entered.connect(_on_godot_window_entered)
+	plugin.godot_editor_window.focus_entered.connect(_on_godot_focus_entered)
+	plugin.godot_editor_window.focus_exited.connect(_on_godot_focus_exited)
+	plugin.godot_editor_window.grab_focus()
+	update_assets()
+	save_editor_settings()
+
+
+func create_window() -> void:
+	window = Window.new()
+	window.wrap_controls = true
+	var mc := MarginContainer.new()
+	mc.set_anchors_preset(PRESET_FULL_RECT, false)
+	mc.add_child(self)
+	window.add_child(mc)
+	window.set_transient(false)
+	window.set_size(plugin.get_setting(ES_DOCK_WINDOW_SIZE, Vector2i(512, 512)))
+	window.set_position(plugin.get_setting(ES_DOCK_WINDOW_POSITION, Vector2i(704, 284)))
+	plugin.add_child(window)
+	window.show()
+
+
+func clamp_window_position() -> void:
+	if window and window.visible:
+		var bounds: Vector2i
+		if EditorInterface.get_editor_settings().get_setting("interface/editor/single_window_mode"):
+			bounds = EditorInterface.get_base_control().size
+		else:
+			bounds = DisplayServer.screen_get_position(window.current_screen)
+			bounds += DisplayServer.screen_get_size(window.current_screen)
+		var margin: int = 40
+		window.position.x = clamp(window.position.x, -window.size.x + 2*margin, bounds.x - margin)
+		window.position.y = clamp(window.position.y, 25, bounds.y - margin)
+
+
+func _on_window_input(event: InputEvent) -> void:
+	# Capture CTRL+S when doc focused to save scene
+	if event is InputEventKey and event.keycode == KEY_S and event.pressed and event.is_command_or_control_pressed():
+		save_editor_settings()
+		EditorInterface.save_scene()
+
+
+func _on_godot_window_entered() -> void:
+	if is_instance_valid(window) and window.has_focus():
+		plugin.godot_editor_window.grab_focus()
+
+
+func _on_godot_focus_entered() -> void:
+	# If asset dock is windowed, and Godot was minimized, and now is not, restore asset dock window
+	if is_instance_valid(window):
+		if _godot_last_state == Window.MODE_MINIMIZED and plugin.godot_editor_window.mode != Window.MODE_MINIMIZED:
+			window.show()
+			_godot_last_state = plugin.godot_editor_window.mode
+			plugin.godot_editor_window.grab_focus()
+
+
+func _on_godot_focus_exited() -> void:
+	if is_instance_valid(window) and plugin.godot_editor_window.mode == Window.MODE_MINIMIZED:
+		window.hide()
+		_godot_last_state = plugin.godot_editor_window.mode
+
+
+## Manage Editor Settings
+
+func load_editor_settings() -> void:
+	floating_btn.button_pressed = plugin.get_setting(ES_DOCK_FLOATING, false)
+	pinned_btn.button_pressed = plugin.get_setting(ES_DOCK_PINNED, true)
+	size_slider.value = plugin.get_setting(ES_DOCK_TILE_SIZE, 83)
+	_on_slider_changed(size_slider.value)
+	set_slot(plugin.get_setting(ES_DOCK_SLOT, POS_BOTTOM))
+	if floating_btn.button_pressed:
+		make_dock_float()
+	# TODO Don't save tab until thumbnail generation more reliable
+	#if plugin.get_setting(ES_DOCK_TAB, 0) == 1:
+	#	_on_meshes_pressed()
+
+
+func save_editor_settings() -> void:
+	if not _initialized:
+		return
+	clamp_window_position()
+	plugin.set_setting(ES_DOCK_SLOT, slot)
+	plugin.set_setting(ES_DOCK_TILE_SIZE, size_slider.value)
+	plugin.set_setting(ES_DOCK_FLOATING, floating_btn.button_pressed)
+	plugin.set_setting(ES_DOCK_PINNED, pinned_btn.button_pressed)
+	# TODO Don't save tab until thumbnail generation more reliable
+	# plugin.set_setting(ES_DOCK_TAB, 0 if _current_list == texture_list else 1)
+	if window:
+		plugin.set_setting(ES_DOCK_WINDOW_SIZE, window.size)
+		plugin.set_setting(ES_DOCK_WINDOW_POSITION, window.position)
+
+
+##############################################################
+## class ListContainer
+##############################################################
+
+	
+class ListContainer extends Container:
+	var plugin: EditorPlugin
+	var type := Terrain3DAssets.TYPE_TEXTURE
+	var entries: Array[ListEntry]
+	var selected_id: int = 0
+	var height: float = 0
+	var width: float = 83
+	var focus_style: StyleBox
+
+	
+	func _ready() -> void:
+		set_v_size_flags(SIZE_EXPAND_FILL)
+		set_h_size_flags(SIZE_EXPAND_FILL)
+		focus_style = get_theme_stylebox("focus", "Button").duplicate()
+		focus_style.set_border_width_all(2)
+		focus_style.set_border_color(Color(1, 1, 1, .67))
+
+
+	func clear() -> void:
+		for e in entries:
+			e.get_parent().remove_child(e)
+			e.queue_free()
+		entries.clear()
+
+
+	func update_asset_list() -> void:
+		clear()
+		
+		# Grab terrain
+		var t: Terrain3D
+		if plugin.is_terrain_valid():
+			t = plugin.terrain
+		elif is_instance_valid(plugin._last_terrain) and plugin.is_terrain_valid(plugin._last_terrain):
+			t = plugin._last_terrain
+		else:
+			return
+		
+		if not t.assets:
+			return
+		
+		if type == Terrain3DAssets.TYPE_TEXTURE:
+			var texture_count: int = t.assets.get_texture_count()
+			for i in texture_count:
+				var texture: Terrain3DTextureAsset = t.assets.get_texture(i)
+				add_item(texture)
+			if texture_count < Terrain3DAssets.MAX_TEXTURES:
+				add_item()
+		else:
+			var mesh_count: int = t.assets.get_mesh_count()
+			for i in mesh_count:
+				var mesh: Terrain3DMeshAsset = t.assets.get_mesh_asset(i)
+				add_item(mesh, t.assets)
+			if mesh_count < Terrain3DAssets.MAX_MESHES:
+				add_item()
+			if selected_id >= mesh_count or selected_id < 0:
+				set_selected_id(0)
+
+
+	func add_item(p_resource: Resource = null, p_assets: Terrain3DAssets = null) -> void:
+		var entry: ListEntry = ListEntry.new()
+		entry.focus_style = focus_style
+		var id: int = entries.size()
+		
+		entry.set_edited_resource(p_resource)
+		entry.hovered.connect(_on_resource_hovered.bind(id))
+		entry.selected.connect(set_selected_id.bind(id))
+		entry.inspected.connect(_on_resource_inspected)
+		entry.changed.connect(_on_resource_changed.bind(id))
+		entry.type = type
+		entry.asset_list = p_assets
+		add_child(entry)
+		entries.push_back(entry)
+		
+		if p_resource:
+			entry.set_selected(id == selected_id)
+			if not p_resource.id_changed.is_connected(set_selected_after_swap):
+				p_resource.id_changed.connect(set_selected_after_swap)
+
+
+	func _on_resource_hovered(p_id: int):
+		if type == Terrain3DAssets.TYPE_MESH:
+			if plugin.terrain:
+				plugin.terrain.assets.create_mesh_thumbnails(p_id)
+
+	
+	func set_selected_after_swap(p_type: Terrain3DAssets.AssetType, p_old_id: int, p_new_id: int) -> void:
+		set_selected_id(clamp(p_new_id, 0, entries.size() - 2))
+
+
+	func set_selected_id(p_id: int) -> void:
+		selected_id = p_id
+		
+		for i in entries.size():
+			var entry: ListEntry = entries[i]
+			entry.set_selected(i == selected_id)
+		
+		plugin.select_terrain()
+
+		# Select Paint tool if clicking a texture
+		if type == Terrain3DAssets.TYPE_TEXTURE and \
+				not plugin.editor.get_tool() in [ Terrain3DEditor.TEXTURE, Terrain3DEditor.COLOR, Terrain3DEditor.ROUGHNESS ]:
+			var paint_btn: Button = plugin.ui.toolbar.get_node_or_null("PaintBaseTexture")
+			if paint_btn:
+				paint_btn.set_pressed(true)
+				plugin.ui._on_tool_changed(Terrain3DEditor.TEXTURE, Terrain3DEditor.REPLACE)
+
+		elif type == Terrain3DAssets.TYPE_MESH and plugin.editor.get_tool() != Terrain3DEditor.INSTANCER:
+			var instancer_btn: Button = plugin.ui.toolbar.get_node_or_null("InstanceMeshes")
+			if instancer_btn:
+				instancer_btn.set_pressed(true)
+				plugin.ui._on_tool_changed(Terrain3DEditor.INSTANCER, Terrain3DEditor.ADD)
+		
+		# Update editor with selected brush
+		plugin.ui._on_setting_changed()
+
+
+	func _on_resource_inspected(p_resource: Resource) -> void:
+		await get_tree().create_timer(.01).timeout
+		EditorInterface.edit_resource(p_resource)
+	
+	
+	func _on_resource_changed(p_resource: Resource, p_id: int) -> void:
+		if not p_resource:
+			var asset_dock: Control = get_parent().get_parent().get_parent()
+			if type == Terrain3DAssets.TYPE_TEXTURE:
+				asset_dock.confirm_dialog.dialog_text = "Are you sure you want to clear this texture?"
+			else:
+				asset_dock.confirm_dialog.dialog_text = "Are you sure you want to clear this mesh and delete all instances?"
+			asset_dock.confirm_dialog.popup_centered()
+			await asset_dock.confirmation_closed
+			if not asset_dock._confirmed:
+				update_asset_list()
+				return
+			
+		if not plugin.is_terrain_valid():
+			plugin.select_terrain()
+			await get_tree().create_timer(.01).timeout
+
+		if plugin.is_terrain_valid():
+			if type == Terrain3DAssets.TYPE_TEXTURE:
+				plugin.terrain.get_assets().set_texture(p_id, p_resource)
+			else:
+				plugin.terrain.get_assets().set_mesh_asset(p_id, p_resource)
+				await get_tree().create_timer(.01).timeout
+				plugin.terrain.assets.create_mesh_thumbnails(p_id)
+
+			# If removing an entry, clear inspector
+			if not p_resource:
+				EditorInterface.inspect_object(null)			
+				
+		# If null resource, remove last 
+		if not p_resource:
+			var last_offset: int = 2
+			if p_id == entries.size()-2:
+				last_offset = 3
+			set_selected_id(clamp(selected_id, 0, entries.size() - last_offset))
+
+		# Update editor with selected brush
+		plugin.ui._on_setting_changed()
+
+
+	func get_selected_id() -> int:
+		return selected_id
+
+
+
+	func set_entry_width(value: float) -> void:
+		width = clamp(value, 56, 230)
+		redraw()
+
+
+	func get_entry_width() -> float:
+		return width
+	
+
+	func redraw() -> void:
+		height = 0
+		var id: int = 0
+		var separation: float = 4
+		var columns: int = 3
+		columns = clamp(size.x / width, 1, 100)
+		
+		for c in get_children():
+			if is_instance_valid(c):
+				c.size = Vector2(width, width) - Vector2(separation, separation)
+				c.position = Vector2(id % columns, id / columns) * width + \
+					Vector2(separation / columns, separation / columns)
+				height = max(height, c.position.y + width)
+				id += 1
+
+
+	# Needed to enable ScrollContainer scroll bar
+	func _get_minimum_size() -> Vector2:
+		return Vector2(0, height)
+
+		
+	func _notification(p_what) -> void:
+		if p_what == NOTIFICATION_SORT_CHILDREN:
+			redraw()
+
+
+##############################################################
+## class ListEntry
+##############################################################
+
+
+class ListEntry extends VBoxContainer:
+	signal hovered()
+	signal selected()
+	signal changed(resource: Resource)
+	signal inspected(resource: Resource)
+	
+	var resource: Resource
+	var type := Terrain3DAssets.TYPE_TEXTURE
+	var _thumbnail: Texture2D
+	var drop_data: bool = false
+	var is_hovered: bool = false
+	var is_selected: bool = false
+	var asset_list: Terrain3DAssets
+	
+	var button_clear: TextureButton
+	var button_edit: TextureButton
+	var name_label: Label
+	
+	@onready var add_icon: Texture2D = get_theme_icon("Add", "EditorIcons")
+	@onready var clear_icon: Texture2D = get_theme_icon("Close", "EditorIcons")
+	@onready var edit_icon: Texture2D = get_theme_icon("Edit", "EditorIcons")
+	@onready var background: StyleBox = get_theme_stylebox("pressed", "Button")
+	var focus_style: StyleBox
+
+
+	func _ready() -> void:
+		var icon_size: Vector2 = Vector2(12, 12)
+		
+		button_clear = TextureButton.new()
+		button_clear.set_texture_normal(clear_icon)
+		button_clear.set_custom_minimum_size(icon_size)
+		button_clear.set_h_size_flags(Control.SIZE_SHRINK_END)
+		button_clear.set_visible(resource != null)
+		button_clear.pressed.connect(clear)
+		add_child(button_clear)
+		
+		button_edit = TextureButton.new()
+		button_edit.set_texture_normal(edit_icon)
+		button_edit.set_custom_minimum_size(icon_size)
+		button_edit.set_h_size_flags(Control.SIZE_SHRINK_END)
+		button_edit.set_visible(resource != null)
+		button_edit.pressed.connect(edit)
+		add_child(button_edit)
+		
+		name_label = Label.new()
+		add_child(name_label, true)
+		name_label.visible = false
+		name_label.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
+		name_label.vertical_alignment = VERTICAL_ALIGNMENT_BOTTOM
+		name_label.size_flags_vertical = Control.SIZE_EXPAND_FILL
+		name_label.add_theme_color_override("font_shadow_color", Color.BLACK)
+		name_label.add_theme_constant_override("shadow_offset_x", 1)
+		name_label.add_theme_constant_override("shadow_offset_y", 1)
+		name_label.add_theme_font_size_override("font_size", 15)
+		name_label.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART
+		name_label.text_overrun_behavior = TextServer.OVERRUN_TRIM_ELLIPSIS
+		if type == Terrain3DAssets.TYPE_TEXTURE:
+			name_label.text = "Add Texture"
+		else:
+			name_label.text = "Add Mesh"
+
+
+	func _notification(p_what) -> void:
+		match p_what:
+			NOTIFICATION_DRAW:
+				var rect: Rect2 = Rect2(Vector2.ZERO, get_size())
+				if !resource:
+					draw_style_box(background, rect)
+					draw_texture(add_icon, (get_size() / 2) - (add_icon.get_size() / 2))
+				else:
+					if type == Terrain3DAssets.TYPE_TEXTURE:
+						name_label.text = (resource as Terrain3DTextureAsset).get_name()
+						self_modulate = resource.get_albedo_color()
+						_thumbnail = resource.get_albedo_texture()
+						if _thumbnail:
+							draw_texture_rect(_thumbnail, rect, false)
+							texture_filter = CanvasItem.TEXTURE_FILTER_NEAREST_WITH_MIPMAPS
+					else:
+						name_label.text = (resource as Terrain3DMeshAsset).get_name()
+						var id: int = (resource as Terrain3DMeshAsset).get_id()
+						_thumbnail = resource.get_thumbnail()
+						if _thumbnail:
+							draw_texture_rect(_thumbnail, rect, false)
+							texture_filter = CanvasItem.TEXTURE_FILTER_LINEAR_WITH_MIPMAPS
+						else:
+							draw_rect(rect, Color(.15, .15, .15, 1.))
+				name_label.add_theme_font_size_override("font_size", 4 + rect.size.x/10)
+				if drop_data:
+					draw_style_box(focus_style, rect)
+				if is_hovered:
+					draw_rect(rect, Color(1, 1, 1, 0.2))
+				if is_selected:
+					draw_style_box(focus_style, rect)
+			NOTIFICATION_MOUSE_ENTER:
+				is_hovered = true
+				name_label.visible = true
+				emit_signal("hovered")
+				queue_redraw()
+			NOTIFICATION_MOUSE_EXIT:
+				is_hovered = false
+				name_label.visible = false
+				drop_data = false
+				queue_redraw()
+
+	
+	func _gui_input(p_event: InputEvent) -> void:
+		if p_event is InputEventMouseButton:
+			if p_event.is_pressed():
+				match p_event.get_button_index():
+					MOUSE_BUTTON_LEFT:
+						# If `Add new` is clicked
+						if !resource:
+							if type == Terrain3DAssets.TYPE_TEXTURE:
+								set_edited_resource(Terrain3DTextureAsset.new(), false)
+							else:
+								set_edited_resource(Terrain3DMeshAsset.new(), false)
+							edit()
+						else:
+							emit_signal("selected")
+					MOUSE_BUTTON_RIGHT:
+						if resource:
+							edit()
+					MOUSE_BUTTON_MIDDLE:
+						if resource:
+							clear()
+
+
+	func _can_drop_data(p_at_position: Vector2, p_data: Variant) -> bool:
+		drop_data = false
+		if typeof(p_data) == TYPE_DICTIONARY:
+			if p_data.files.size() == 1:
+				queue_redraw()
+				drop_data = true
+		return drop_data
+
+		
+	func _drop_data(p_at_position: Vector2, p_data: Variant) -> void:
+		if typeof(p_data) == TYPE_DICTIONARY:
+			var res: Resource = load(p_data.files[0])
+			if res is Texture2D and type == Terrain3DAssets.TYPE_TEXTURE:
+				var ta := Terrain3DTextureAsset.new()
+				if resource is Terrain3DTextureAsset:
+					ta.id = resource.id
+				ta.set_albedo_texture(res)
+				set_edited_resource(ta, false)
+				resource = ta
+			elif res is Terrain3DTextureAsset and type == Terrain3DAssets.TYPE_TEXTURE:
+				if resource is Terrain3DTextureAsset:
+					res.id = resource.id
+				set_edited_resource(res, false)
+			elif res is PackedScene and type == Terrain3DAssets.TYPE_MESH:
+				var ma := Terrain3DMeshAsset.new()
+				if resource is Terrain3DMeshAsset:
+					ma.id = resource.id
+				ma.set_scene_file(res)
+				set_edited_resource(ma, false)
+				resource = ma
+			elif res is Terrain3DMeshAsset and type == Terrain3DAssets.TYPE_MESH:
+				if resource is Terrain3DMeshAsset:
+					res.id = resource.id
+				set_edited_resource(res, false)
+			emit_signal("selected")
+			emit_signal("inspected", resource)
+
+
+
+	func set_edited_resource(p_res: Resource, p_no_signal: bool = true) -> void:
+		resource = p_res
+		if resource:
+			resource.setting_changed.connect(_on_resource_changed)
+			resource.file_changed.connect(_on_resource_changed)
+		
+		if button_clear:
+			button_clear.set_visible(resource != null)
+			
+		queue_redraw()
+		if !p_no_signal:
+			emit_signal("changed", resource)
+
+
+	func _on_resource_changed() -> void:
+		emit_signal("changed", resource)
+
+
+	func set_selected(value: bool) -> void:
+		is_selected = value
+		queue_redraw()
+
+
+	func clear() -> void:
+		if resource:
+			set_edited_resource(null, false)
+
+	
+	func edit() -> void:
+		emit_signal("selected")
+		emit_signal("inspected", resource)

addons/terrain_3d/src/asset_dock.tscn

@@ -0,0 +1,93 @@
+[gd_scene load_steps=2 format=3 uid="uid://dkb6hii5e48m2"]
+
+[ext_resource type="Script" path="res://addons/terrain_3d/src/asset_dock.gd" id="1_e23pg"]
+
+[node name="Terrain3D" type="PanelContainer"]
+custom_minimum_size = Vector2(256, 95)
+offset_right = 766.0
+offset_bottom = 100.0
+script = ExtResource("1_e23pg")
+
+[node name="Box" type="BoxContainer" parent="."]
+layout_mode = 2
+size_flags_vertical = 3
+vertical = true
+
+[node name="Buttons" type="BoxContainer" parent="Box"]
+layout_mode = 2
+
+[node name="TexturesBtn" type="Button" parent="Box/Buttons"]
+custom_minimum_size = Vector2(80, 30)
+layout_mode = 2
+size_flags_horizontal = 3
+size_flags_vertical = 0
+theme_override_font_sizes/font_size = 16
+toggle_mode = true
+button_pressed = true
+text = "Textures"
+
+[node name="MeshesBtn" type="Button" parent="Box/Buttons"]
+custom_minimum_size = Vector2(80, 30)
+layout_mode = 2
+size_flags_horizontal = 3
+size_flags_vertical = 0
+theme_override_font_sizes/font_size = 16
+toggle_mode = true
+text = "Meshes"
+
+[node name="PlacementOpt" type="OptionButton" parent="Box/Buttons"]
+custom_minimum_size = Vector2(80, 30)
+layout_mode = 2
+size_flags_horizontal = 3
+size_flags_vertical = 0
+item_count = 9
+selected = 7
+popup/item_0/text = "Left_UL"
+popup/item_0/id = 0
+popup/item_1/text = "Left_BL"
+popup/item_1/id = 1
+popup/item_2/text = "Left_UR"
+popup/item_2/id = 2
+popup/item_3/text = "Left_BR"
+popup/item_3/id = 3
+popup/item_4/text = "Right_UL"
+popup/item_4/id = 4
+popup/item_5/text = "Right_BL "
+popup/item_5/id = 5
+popup/item_6/text = "Right_UR"
+popup/item_6/id = 6
+popup/item_7/text = "Right_BR"
+popup/item_7/id = 7
+popup/item_8/text = "Bottom"
+popup/item_8/id = 8
+
+[node name="SizeSlider" type="HSlider" parent="Box/Buttons"]
+custom_minimum_size = Vector2(80, 10)
+layout_mode = 2
+size_flags_horizontal = 3
+min_value = 56.0
+max_value = 230.0
+value = 83.0
+
+[node name="Floating" type="Button" parent="Box/Buttons"]
+layout_mode = 2
+size_flags_horizontal = 0
+size_flags_vertical = 0
+tooltip_text = "Pop this dock out to a floating window."
+toggle_mode = true
+text = "F"
+flat = true
+
+[node name="Pinned" type="Button" parent="Box/Buttons"]
+layout_mode = 2
+size_flags_horizontal = 0
+size_flags_vertical = 0
+tooltip_text = "Make this window \"Always on top\"."
+toggle_mode = true
+text = "P"
+flat = true
+
+[node name="ScrollContainer" type="ScrollContainer" parent="Box"]
+layout_mode = 2
+size_flags_horizontal = 3
+size_flags_vertical = 3

addons/terrain_3d/src/bake_lod_dialog.gd

@@ -0,0 +1,28 @@
+@tool
+extends ConfirmationDialog
+
+var lod: int = 0
+var description: String = ""
+
+
+func _ready() -> void:
+	set_unparent_when_invisible(true)
+	about_to_popup.connect(_on_about_to_popup)
+	visibility_changed.connect(_on_visibility_changed)
+	%LodBox.value_changed.connect(_on_lod_box_value_changed)
+
+
+func _on_about_to_popup() -> void:
+	lod = %LodBox.value
+
+
+func _on_visibility_changed() -> void:
+	# Change text on the autowrap label only when the popup is visible.
+	# Works around Godot issue #47005:
+	# https://github.com/godotengine/godot/issues/47005
+	if visible:
+		%DescriptionLabel.text = description
+
+
+func _on_lod_box_value_changed(p_value: float) -> void:
+	lod = %LodBox.value

addons/terrain_3d/src/bake_lod_dialog.tscn

@@ -0,0 +1,43 @@
+[gd_scene load_steps=2 format=3 uid="uid://bhvrrmb8bk1bt"]
+
+[ext_resource type="Script" path="res://addons/terrain_3d/src/bake_lod_dialog.gd" id="1_sf76d"]
+
+[node name="bake_lod_dialog" type="ConfirmationDialog"]
+title = "Bake Terrain3D Mesh"
+position = Vector2i(0, 36)
+size = Vector2i(400, 155)
+visible = true
+script = ExtResource("1_sf76d")
+
+[node name="MarginContainer" type="MarginContainer" parent="."]
+offset_left = 8.0
+offset_top = 8.0
+offset_right = 392.0
+offset_bottom = 106.0
+theme_override_constants/margin_left = 10
+theme_override_constants/margin_top = 10
+theme_override_constants/margin_right = 10
+theme_override_constants/margin_bottom = 10
+
+[node name="VBoxContainer" type="VBoxContainer" parent="MarginContainer"]
+layout_mode = 2
+
+[node name="HBoxContainer" type="HBoxContainer" parent="MarginContainer/VBoxContainer"]
+layout_mode = 2
+theme_override_constants/separation = 20
+
+[node name="Label" type="Label" parent="MarginContainer/VBoxContainer/HBoxContainer"]
+layout_mode = 2
+text = "LOD:"
+
+[node name="LodBox" type="SpinBox" parent="MarginContainer/VBoxContainer/HBoxContainer"]
+unique_name_in_owner = true
+layout_mode = 2
+size_flags_horizontal = 3
+max_value = 8.0
+value = 4.0
+
+[node name="DescriptionLabel" type="Label" parent="MarginContainer/VBoxContainer"]
+unique_name_in_owner = true
+layout_mode = 2
+autowrap_mode = 2

addons/terrain_3d/src/baker.gd

@@ -0,0 +1,400 @@
+extends Node
+
+const BakeLodDialog: PackedScene = preload("res://addons/terrain_3d/src/bake_lod_dialog.tscn")
+const BAKE_MESH_DESCRIPTION: String = "This will create a child MeshInstance3D. LOD4+ is recommended. LOD0 is slow and dense with vertices every 1 unit. It is not an optimal mesh."
+const BAKE_OCCLUDER_DESCRIPTION: String = "This will create a child OccluderInstance3D. LOD4+ is recommended and will take 5+ seconds per region to generate. LOD0 is unnecessarily dense and slow."
+const SET_UP_NAVIGATION_DESCRIPTION: String = "This operation will:
+
+- Create a NavigationRegion3D node,
+- Assign it a blank NavigationMesh resource,
+- Move the Terrain3D node to be a child of the new node,
+- And bake the nav mesh.
+
+Once setup is complete, you can modify the settings on your nav mesh, and rebake
+without having to run through the setup again.
+
+If preferred, this setup can be canceled and the steps performed manually. For
+the best results, adjust the settings on the NavigationMesh resource to match
+the settings of your navigation agents and collisions."
+
+var plugin: EditorPlugin
+var bake_method: Callable
+var bake_lod_dialog: ConfirmationDialog
+var confirm_dialog: ConfirmationDialog
+
+
+func _enter_tree() -> void:
+	bake_lod_dialog = BakeLodDialog.instantiate()
+	bake_lod_dialog.hide()
+	bake_lod_dialog.confirmed.connect(func(): bake_method.call())
+	bake_lod_dialog.set_unparent_when_invisible(true)
+	
+	confirm_dialog = ConfirmationDialog.new()
+	confirm_dialog.hide()
+	confirm_dialog.confirmed.connect(func(): bake_method.call())
+	confirm_dialog.set_unparent_when_invisible(true)
+
+
+func _exit_tree() -> void:
+	bake_lod_dialog.queue_free()
+	confirm_dialog.queue_free()
+
+
+func bake_mesh_popup() -> void:
+	if plugin.terrain:
+		bake_method = _bake_mesh
+		bake_lod_dialog.description = BAKE_MESH_DESCRIPTION
+		EditorInterface.popup_dialog_centered(bake_lod_dialog)
+
+
+func _bake_mesh() -> void:
+	if plugin.terrain.data.get_region_count() == 0:
+		push_error("Terrain3D has no active regions to bake")
+		return
+	var mesh: Mesh = plugin.terrain.bake_mesh(bake_lod_dialog.lod, Terrain3DData.HEIGHT_FILTER_NEAREST)
+	if !mesh:
+		push_error("Failed to bake mesh from Terrain3D")
+		return
+
+	var undo: EditorUndoRedoManager = plugin.get_undo_redo()
+	undo.create_action("Terrain3D Bake ArrayMesh")
+	
+	var mesh_instance := plugin.terrain.get_node_or_null(^"MeshInstance3D") as MeshInstance3D
+	if !mesh_instance:
+		mesh_instance = MeshInstance3D.new()
+		mesh_instance.name = &"MeshInstance3D"
+		mesh_instance.set_skeleton_path(NodePath())
+		mesh_instance.mesh = mesh
+		
+		undo.add_do_method(plugin.terrain, &"add_child", mesh_instance, true)
+		undo.add_undo_method(plugin.terrain, &"remove_child", mesh_instance)
+		undo.add_do_property(mesh_instance, &"owner", EditorInterface.get_edited_scene_root())
+		undo.add_do_reference(mesh_instance)
+	
+	else:
+		undo.add_do_property(mesh_instance, &"mesh", mesh)
+		undo.add_undo_property(mesh_instance, &"mesh", mesh_instance.mesh)
+		
+		if mesh_instance.mesh.resource_path:
+			var path := mesh_instance.mesh.resource_path
+			undo.add_do_method(mesh, &"take_over_path", path)
+			undo.add_undo_method(mesh_instance.mesh, &"take_over_path", path)
+			undo.add_do_method(ResourceSaver, &"save", mesh)
+			undo.add_undo_method(ResourceSaver, &"save", mesh_instance.mesh)
+	
+	undo.commit_action()
+
+
+func bake_occluder_popup() -> void:
+	if plugin.terrain:
+		bake_method = _bake_occluder
+		bake_lod_dialog.description = BAKE_OCCLUDER_DESCRIPTION
+		EditorInterface.popup_dialog_centered(bake_lod_dialog)
+
+
+func _bake_occluder() -> void:
+	if plugin.terrain.data.get_region_count() == 0:
+		push_error("Terrain3D has no active regions to bake")
+		return
+	var mesh: Mesh = plugin.terrain.bake_mesh(bake_lod_dialog.lod, Terrain3DData.HEIGHT_FILTER_MINIMUM)
+	if !mesh:
+		push_error("Failed to bake mesh from Terrain3D")
+		return
+	assert(mesh.get_surface_count() == 1)
+
+	var undo: EditorUndoRedoManager = plugin.get_undo_redo()
+	undo.create_action("Terrain3D Bake Occluder3D")
+
+	var occluder := ArrayOccluder3D.new()
+	var arrays: Array = mesh.surface_get_arrays(0)
+	assert(arrays.size() > Mesh.ARRAY_INDEX)
+	assert(arrays[Mesh.ARRAY_INDEX] != null)
+	occluder.set_arrays(arrays[Mesh.ARRAY_VERTEX], arrays[Mesh.ARRAY_INDEX])
+
+	var occluder_instance := plugin.terrain.get_node_or_null(^"OccluderInstance3D") as OccluderInstance3D
+	if !occluder_instance:
+		occluder_instance = OccluderInstance3D.new()
+		occluder_instance.name = &"OccluderInstance3D"
+		occluder_instance.occluder = occluder
+
+		undo.add_do_method(plugin.terrain, &"add_child", occluder_instance, true)
+		undo.add_undo_method(plugin.terrain, &"remove_child", occluder_instance)
+		undo.add_do_property(occluder_instance, &"owner", EditorInterface.get_edited_scene_root())
+		undo.add_do_reference(occluder_instance)
+	
+	else:
+		undo.add_do_property(occluder_instance, &"occluder", occluder)
+		undo.add_undo_property(occluder_instance, &"occluder", occluder_instance.occluder)
+		
+		if occluder_instance.occluder.resource_path:
+			var path := occluder_instance.occluder.resource_path
+			undo.add_do_method(occluder, &"take_over_path", path)
+			undo.add_undo_method(occluder_instance.occluder, &"take_over_path", path)
+			undo.add_do_method(ResourceSaver, &"save", occluder)
+			undo.add_undo_method(ResourceSaver, &"save", occluder_instance.occluder)
+	
+	undo.commit_action()
+
+
+func find_nav_region_terrains(p_nav_region: NavigationRegion3D) -> Array[Terrain3D]:
+	var result: Array[Terrain3D] = []
+	if not p_nav_region.navigation_mesh:
+		return result
+	
+	var source_mode: NavigationMesh.SourceGeometryMode
+	source_mode = p_nav_region.navigation_mesh.geometry_source_geometry_mode
+	if source_mode == NavigationMesh.SOURCE_GEOMETRY_ROOT_NODE_CHILDREN:
+		result.append_array(p_nav_region.find_children("", "Terrain3D", true, true))
+		return result
+	
+	var group_nodes: Array = p_nav_region.get_tree().get_nodes_in_group(p_nav_region.navigation_mesh.geometry_source_group_name)
+	for node in group_nodes:
+		if node is Terrain3D:
+			result.push_back(node)
+		if source_mode == NavigationMesh.SOURCE_GEOMETRY_GROUPS_WITH_CHILDREN:
+			result.append_array(node.find_children("", "Terrain3D", true, true))
+	
+	return result
+
+
+func find_terrain_nav_regions(p_terrain: Terrain3D) -> Array[NavigationRegion3D]:
+	var result: Array[NavigationRegion3D] = []
+	var root: Node = EditorInterface.get_edited_scene_root()
+	if not root:
+		return result
+	for nav_region in root.find_children("", "NavigationRegion3D", true, true):
+		if find_nav_region_terrains(nav_region).has(p_terrain):
+			result.push_back(nav_region)
+	return result
+
+
+func bake_nav_mesh() -> void:
+	if plugin.nav_region:
+		# A NavigationRegion3D is selected. We only need to bake that one navmesh.
+		_bake_nav_region_nav_mesh(plugin.nav_region)
+		print("Terrain3DNavigation: Finished baking 1 NavigationMesh.")
+	
+	elif plugin.terrain:
+		if plugin.terrain.data.get_region_count() == 0:
+			push_error("Terrain3D has no active regions to bake")
+			return
+		# A Terrain3D is selected. There are potentially multiple navmeshes to bake and we need to
+		# find them all. (The multiple navmesh use-case is likely on very large scenes with lots of
+		# geometry. Each navmesh in this case would define its own, non-overlapping, baking AABB, to
+		# cut down on the amount of geometry to bake. In a large open-world RPG, for instance, there
+		# could be a navmesh for each town.)
+		var nav_regions: Array[NavigationRegion3D] = find_terrain_nav_regions(plugin.terrain)
+		for nav_region in nav_regions:
+			_bake_nav_region_nav_mesh(nav_region)
+		print("Terrain3DNavigation: Finished baking %d NavigationMesh(es)." % nav_regions.size())
+
+
+func _bake_nav_region_nav_mesh(p_nav_region: NavigationRegion3D) -> void:
+	var nav_mesh: NavigationMesh = p_nav_region.navigation_mesh
+	assert(nav_mesh != null)
+	
+	var source_geometry_data := NavigationMeshSourceGeometryData3D.new()
+	NavigationMeshGenerator.parse_source_geometry_data(nav_mesh, source_geometry_data, p_nav_region)
+	
+	for terrain in find_nav_region_terrains(p_nav_region):
+		var aabb: AABB = nav_mesh.filter_baking_aabb
+		aabb.position += nav_mesh.filter_baking_aabb_offset
+		aabb = p_nav_region.global_transform * aabb
+		var faces: PackedVector3Array = terrain.generate_nav_mesh_source_geometry(aabb)
+		if not faces.is_empty():
+			source_geometry_data.add_faces(faces, Transform3D.IDENTITY)
+	
+	NavigationMeshGenerator.bake_from_source_geometry_data(nav_mesh, source_geometry_data)
+	
+	_postprocess_nav_mesh(nav_mesh)
+	
+	# Assign null first to force the debug display to actually update:
+	p_nav_region.set_navigation_mesh(null)
+	p_nav_region.set_navigation_mesh(nav_mesh)
+	
+	# Trigger save to disk if it is saved as an external file
+	if not nav_mesh.get_path().is_empty():
+		ResourceSaver.save(nav_mesh, nav_mesh.get_path(), ResourceSaver.FLAG_COMPRESS)
+	
+	# Let other editor plugins and tool scripts know the nav mesh was just baked:
+	p_nav_region.bake_finished.emit()
+
+
+func _postprocess_nav_mesh(p_nav_mesh: NavigationMesh) -> void:
+	# Post-process the nav mesh to work around Godot issue #85548
+	
+	# Round all the vertices in the nav_mesh to the nearest cell_size/cell_height so that it doesn't
+	# contain any edges shorter than cell_size/cell_height (one cause of #85548).
+	var vertices: PackedVector3Array = _postprocess_nav_mesh_round_vertices(p_nav_mesh)
+	
+	# Rounding vertices can collapse some edges to 0 length. We remove these edges, and any polygons
+	# that have been reduced to 0 area.
+	var polygons: Array[PackedInt32Array] = _postprocess_nav_mesh_remove_empty_polygons(p_nav_mesh, vertices)
+	
+	# Another cause of #85548 is baking producing overlapping polygons. We remove these.
+	_postprocess_nav_mesh_remove_overlapping_polygons(p_nav_mesh, vertices, polygons)
+	
+	p_nav_mesh.clear_polygons()
+	p_nav_mesh.set_vertices(vertices)
+	for polygon in polygons:
+		p_nav_mesh.add_polygon(polygon)
+
+
+func _postprocess_nav_mesh_round_vertices(p_nav_mesh: NavigationMesh) -> PackedVector3Array:
+	assert(p_nav_mesh != null)
+	assert(p_nav_mesh.cell_size > 0.0)
+	assert(p_nav_mesh.cell_height > 0.0)
+	
+	var cell_size: Vector3 = Vector3(p_nav_mesh.cell_size, p_nav_mesh.cell_height, p_nav_mesh.cell_size)
+	
+	# Round a little harder to avoid rounding errors with non-power-of-two cell_size/cell_height
+	# causing the navigation map to put two non-matching edges in the same cell:
+	var round_factor := cell_size * 1.001
+	
+	var vertices: PackedVector3Array = p_nav_mesh.get_vertices()
+	for i in range(vertices.size()):
+		vertices[i] = (vertices[i] / round_factor).floor() * round_factor
+	return vertices
+
+
+func _postprocess_nav_mesh_remove_empty_polygons(p_nav_mesh: NavigationMesh, p_vertices: PackedVector3Array) -> Array[PackedInt32Array]:
+	var polygons: Array[PackedInt32Array] = []
+	
+	for i in range(p_nav_mesh.get_polygon_count()):
+		var old_polygon: PackedInt32Array = p_nav_mesh.get_polygon(i)
+		var new_polygon: PackedInt32Array = []
+		
+		# Remove duplicate vertices (introduced by rounding) from the polygon:
+		var polygon_vertices: PackedVector3Array = []
+		for index in old_polygon:
+			var vertex: Vector3 = p_vertices[index]
+			if polygon_vertices.has(vertex):
+				continue
+			polygon_vertices.push_back(vertex)
+			new_polygon.push_back(index)
+		
+		# If we removed some vertices, we might be able to remove the polygon too:
+		if new_polygon.size() <= 2:
+			continue
+		polygons.push_back(new_polygon)
+		
+	return polygons
+
+
+func _postprocess_nav_mesh_remove_overlapping_polygons(p_nav_mesh: NavigationMesh, p_vertices: PackedVector3Array, p_polygons: Array[PackedInt32Array]) -> void:
+	# Occasionally, a baked nav mesh comes out with overlapping polygons:
+	# https://github.com/godotengine/godot/issues/85548#issuecomment-1839341071
+	# Until the bug is fixed in the engine, this function attempts to detect and remove overlapping
+	# polygons.
+	
+	# This function has to make a choice of which polygon to remove when an overlap is detected,
+	# because in this case the nav mesh is ambiguous. To do this it uses a heuristic:
+	# (1) an 'overlap' is defined as an edge that is shared by 3 or more polygons.
+	# (2) a 'bad polygon' is defined as a polygon that contains 2 or more 'overlaps'.
+	# The function removes the 'bad polygons', which in practice seems to be enough to remove all
+	# overlaps without creating holes in the nav mesh.
+	
+	var cell_size: Vector3 = Vector3(p_nav_mesh.cell_size, p_nav_mesh.cell_height, p_nav_mesh.cell_size)
+	
+	# `edges` is going to map edges (vertex pairs) to arrays of polygons that contain that edge.
+	var edges: Dictionary = {}
+	
+	for polygon_index in range(p_polygons.size()):
+		var polygon: PackedInt32Array = p_polygons[polygon_index]
+		for j in range(polygon.size()):
+			var vertex: Vector3 = p_vertices[polygon[j]]
+			var next_vertex: Vector3 = p_vertices[polygon[(j + 1) % polygon.size()]]
+			
+			# edge_key is a key we can use in the edges dictionary that uniquely identifies the
+			# edge. We use cell coordinates here (Vector3i) because with a non-power-of-two
+			# cell_size, rounding errors can cause Vector3 vertices to not be equal.
+			# Array.sort IS defined for vector types - see the Godot docs. It's necessary here
+			# because polygons that share an edge can have their vertices in a different order.
+			var edge_key: Array = [Vector3i(vertex / cell_size), Vector3i(next_vertex / cell_size)]
+			edge_key.sort()
+			
+			if !edges.has(edge_key):
+				edges[edge_key] = []
+			edges[edge_key].push_back(polygon_index)
+	
+	var overlap_count: Dictionary = {}
+	for connections in edges.values():
+		if connections.size() <= 2:
+			continue
+		for polygon_index in connections:
+			overlap_count[polygon_index] = overlap_count.get(polygon_index, 0) + 1
+	
+	var bad_polygons: Array = []
+	for polygon_index in overlap_count.keys():
+		if overlap_count[polygon_index] >= 2:
+			bad_polygons.push_back(polygon_index)
+	
+	bad_polygons.sort()
+	for i in range(bad_polygons.size() - 1, -1, -1):
+		p_polygons.remove_at(bad_polygons[i])
+
+
+func set_up_navigation_popup() -> void:
+	if plugin.terrain:
+		bake_method = _set_up_navigation
+		confirm_dialog.dialog_text = SET_UP_NAVIGATION_DESCRIPTION
+		EditorInterface.popup_dialog_centered(confirm_dialog)
+
+
+func _set_up_navigation() -> void:
+	assert(plugin.terrain)
+	if plugin.terrain == EditorInterface.get_edited_scene_root():
+		push_error("Terrain3D Navigation setup not possible if Terrain3D node is scene root")
+		return
+	if plugin.terrain.data.get_region_count() == 0:
+		push_error("Terrain3D has no active regions")
+		return
+	var terrain: Terrain3D = plugin.terrain
+	
+	var nav_region := NavigationRegion3D.new()
+	nav_region.name = &"NavigationRegion3D"
+	nav_region.navigation_mesh = NavigationMesh.new()
+	
+	var undo_redo: EditorUndoRedoManager = plugin.get_undo_redo()
+	
+	undo_redo.create_action("Terrain3D Set up Navigation")
+	undo_redo.add_do_method(self, &"_do_set_up_navigation", nav_region, terrain)
+	undo_redo.add_undo_method(self, &"_undo_set_up_navigation", nav_region, terrain)
+	undo_redo.add_do_reference(nav_region)
+	undo_redo.commit_action()
+
+	EditorInterface.inspect_object(nav_region)
+	assert(plugin.nav_region == nav_region)
+	
+	bake_nav_mesh()
+
+
+func _do_set_up_navigation(p_nav_region: NavigationRegion3D, p_terrain: Terrain3D) -> void:
+	var parent: Node = p_terrain.get_parent()
+	var index: int = p_terrain.get_index()
+	var t_owner: Node = p_terrain.owner
+	
+	parent.remove_child(p_terrain)
+	p_nav_region.add_child(p_terrain)
+	
+	parent.add_child(p_nav_region, true)
+	parent.move_child(p_nav_region, index)
+	
+	p_nav_region.owner = t_owner
+	p_terrain.owner = t_owner
+
+
+func _undo_set_up_navigation(p_nav_region: NavigationRegion3D, p_terrain: Terrain3D) -> void:
+	assert(p_terrain.get_parent() == p_nav_region)
+	
+	var parent: Node = p_nav_region.get_parent()
+	var index: int = p_nav_region.get_index()
+	var t_owner: Node = p_nav_region.get_owner()
+	
+	parent.remove_child(p_nav_region)
+	p_nav_region.remove_child(p_terrain)
+	
+	parent.add_child(p_terrain, true)
+	parent.move_child(p_terrain, index)
+	
+	p_terrain.owner = t_owner

addons/terrain_3d/src/channel_packer.gd

@@ -0,0 +1,463 @@
+extends RefCounted
+
+const WINDOW_SCENE: String = "res://addons/terrain_3d/src/channel_packer.tscn"
+const TEMPLATE_PATH: String = "res://addons/terrain_3d/src/channel_packer_import_template.txt"
+const DRAG_DROP_SCRIPT: String = "res://addons/terrain_3d/src/channel_packer_dragdrop.gd"
+enum { 
+	INFO,
+	WARN,
+	ERROR,
+}
+
+enum {
+	IMAGE_ALBEDO,
+	IMAGE_HEIGHT,
+	IMAGE_NORMAL,
+	IMAGE_ROUGHNESS
+}
+
+var plugin: EditorPlugin
+var window: Window
+var save_file_dialog: EditorFileDialog
+var open_file_dialog: EditorFileDialog
+var invert_green_checkbox: CheckBox
+var invert_smooth_checkbox: CheckBox
+var invert_height_checkbox: CheckBox
+var lumin_height_button: Button
+var generate_mipmaps_checkbox: CheckBox
+var high_quality_checkbox: CheckBox
+var align_normals_checkbox: CheckBox
+var resize_toggle_checkbox: CheckBox
+var resize_option_box: SpinBox
+var height_channel: Array[Button]
+var height_channel_selected: int = 0
+var roughness_channel: Array[Button]
+var roughness_channel_selected: int = 0
+var last_opened_directory: String
+var last_saved_directory: String
+var packing_albedo: bool = false
+var queue_pack_normal_roughness: bool = false
+var images: Array[Image] = [null, null, null, null]
+var status_label: Label
+var no_op: Callable = func(): pass
+var last_file_selected_fn: Callable = no_op
+var normal_vector: Vector3
+
+
+func pack_textures_popup() -> void:
+	if window != null:
+		window.show()
+		window.move_to_foreground()
+		window.move_to_center()
+		return
+	window = (load(WINDOW_SCENE) as PackedScene).instantiate()
+	window.close_requested.connect(_on_close_requested)
+	window.window_input.connect(func(event:InputEvent):
+		if event is InputEventKey:
+			if event.pressed and event.keycode == KEY_ESCAPE:
+				_on_close_requested()
+		)
+	window.find_child("CloseButton").pressed.connect(_on_close_requested)
+	
+	status_label = window.find_child("StatusLabel") as Label
+	invert_green_checkbox = window.find_child("InvertGreenChannelCheckBox") as CheckBox
+	invert_smooth_checkbox = window.find_child("InvertSmoothCheckBox") as CheckBox
+	invert_height_checkbox = window.find_child("ConvertDepthToHeight") as CheckBox
+	lumin_height_button = window.find_child("LuminanceAsHeightButton") as Button
+	generate_mipmaps_checkbox = window.find_child("GenerateMipmapsCheckBox") as CheckBox
+	high_quality_checkbox = window.find_child("HighQualityCheckBox") as CheckBox
+	align_normals_checkbox = window.find_child("AlignNormalsCheckBox") as CheckBox
+	resize_toggle_checkbox = window.find_child("ResizeToggle") as CheckBox
+	resize_option_box = window.find_child("ResizeOptionButton") as SpinBox
+	height_channel = [
+		window.find_child("HeightChannelR") as Button,
+		window.find_child("HeightChannelG") as Button,
+		window.find_child("HeightChannelB") as Button,
+		window.find_child("HeightChannelA") as Button
+	]
+	roughness_channel = [
+		window.find_child("RoughnessChannelR") as Button,
+		window.find_child("RoughnessChannelG") as Button,
+		window.find_child("RoughnessChannelB") as Button,
+		window.find_child("RoughnessChannelA") as Button
+	]
+	
+	height_channel[0].pressed.connect(func() -> void: height_channel_selected = 0)
+	height_channel[1].pressed.connect(func() -> void: height_channel_selected = 1)
+	height_channel[2].pressed.connect(func() -> void: height_channel_selected = 2)
+	height_channel[3].pressed.connect(func() -> void: height_channel_selected = 3)
+	
+	roughness_channel[0].pressed.connect(func() -> void: roughness_channel_selected = 0)
+	roughness_channel[1].pressed.connect(func() -> void: roughness_channel_selected = 1)
+	roughness_channel[2].pressed.connect(func() -> void: roughness_channel_selected = 2)
+	roughness_channel[3].pressed.connect(func() -> void: roughness_channel_selected = 3)
+	
+	plugin.add_child(window)
+	_init_file_dialogs()
+	
+	# the dialog disables the parent window "on top" so, restore it after 1 frame to alow the dialog to clear.
+	var set_on_top_fn: Callable = func(_file: String = "") -> void:
+		await RenderingServer.frame_post_draw
+		window.always_on_top = true
+	save_file_dialog.file_selected.connect(set_on_top_fn)
+	save_file_dialog.canceled.connect(set_on_top_fn)
+	open_file_dialog.file_selected.connect(set_on_top_fn)
+	open_file_dialog.canceled.connect(set_on_top_fn)
+	
+	_init_texture_picker(window.find_child("AlbedoVBox"), IMAGE_ALBEDO)
+	_init_texture_picker(window.find_child("HeightVBox"), IMAGE_HEIGHT)
+	_init_texture_picker(window.find_child("NormalVBox"), IMAGE_NORMAL)
+	_init_texture_picker(window.find_child("RoughnessVBox"), IMAGE_ROUGHNESS)
+	
+	var pack_button_path: String = "Panel/MarginContainer/VBoxContainer/PackButton" 
+	(window.get_node(pack_button_path) as Button).pressed.connect(_on_pack_button_pressed)
+
+
+func _on_close_requested() -> void:
+	last_file_selected_fn = no_op
+	images = [null, null, null, null]
+	window.queue_free()
+	window = null
+
+
+func _init_file_dialogs() -> void:
+	save_file_dialog = EditorFileDialog.new()
+	save_file_dialog.set_filters(PackedStringArray(["*.png"]))
+	save_file_dialog.set_file_mode(EditorFileDialog.FILE_MODE_SAVE_FILE)
+	save_file_dialog.access = EditorFileDialog.ACCESS_FILESYSTEM
+	save_file_dialog.file_selected.connect(_on_save_file_selected)
+	save_file_dialog.ok_button_text = "Save"
+	save_file_dialog.size = Vector2i(550, 550)
+	#save_file_dialog.transient = false
+	#save_file_dialog.exclusive = false
+	#save_file_dialog.popup_window = true
+	
+	open_file_dialog = EditorFileDialog.new()
+	open_file_dialog.set_filters(PackedStringArray(
+		["*.png", "*.bmp", "*.exr", "*.hdr", "*.jpg", "*.jpeg", "*.tga", "*.svg", "*.webp", "*.ktx", "*.dds"]))
+	open_file_dialog.set_file_mode(EditorFileDialog.FILE_MODE_OPEN_FILE)
+	open_file_dialog.access = EditorFileDialog.ACCESS_FILESYSTEM
+	open_file_dialog.ok_button_text = "Open"
+	open_file_dialog.size = Vector2i(550, 550)
+	#open_file_dialog.transient = false
+	#open_file_dialog.exclusive = false
+	#open_file_dialog.popup_window = true
+	
+	window.add_child(save_file_dialog)
+	window.add_child(open_file_dialog)
+
+
+func _init_texture_picker(p_parent: Node, p_image_index: int) -> void:
+	var line_edit: LineEdit = p_parent.find_child("LineEdit") as LineEdit
+	var file_pick_button: Button = p_parent.find_child("PickButton") as Button
+	var clear_button: Button = p_parent.find_child("ClearButton") as Button
+	var texture_rect: TextureRect = p_parent.find_child("TextureRect") as TextureRect
+	var texture_button: Button = p_parent.find_child("TextureButton") as Button
+	texture_button.set_script(load(DRAG_DROP_SCRIPT) as GDScript)
+	
+	var set_channel_fn: Callable = func(used_channels: int) -> void:
+		var channel_count: int = 4
+		# enum Image.UsedChannels
+		match used_channels:
+			Image.USED_CHANNELS_L, Image.USED_CHANNELS_R: channel_count = 1
+			Image.USED_CHANNELS_LA, Image.USED_CHANNELS_RG: channel_count = 2
+			Image.USED_CHANNELS_RGB: channel_count = 3
+			Image.USED_CHANNELS_RGBA: channel_count = 4
+		if p_image_index == IMAGE_HEIGHT:
+			for i in 4:
+				height_channel[i].visible = i < channel_count
+			height_channel[0].button_pressed = true
+			height_channel[0].pressed.emit()
+		elif p_image_index == IMAGE_ROUGHNESS:
+			for i in 4:
+				roughness_channel[i].visible = i < channel_count
+			roughness_channel[0].button_pressed = true
+			roughness_channel[0].pressed.emit()
+	
+	var load_image_fn: Callable = func(path: String):
+		var image: Image = Image.new()
+		var error: int = OK
+		# Special case for dds files
+		if path.get_extension() == "dds":
+			image = ResourceLoader.load(path).get_image()
+			if not image.is_empty():
+				# if the dds file is loaded, we must clear any mipmaps and
+				# decompress if needed in order to do per pixel operations.
+				image.clear_mipmaps()
+				image.decompress()
+			else:
+				error = FAILED
+		else:
+			error = image.load(path)
+		if error != OK:
+			_show_message(ERROR, "Failed to load texture '" + path + "'")
+			texture_rect.texture = null
+			images[p_image_index] = null
+		else:
+			_show_message(INFO, "Loaded texture '" + path + "'")
+			texture_rect.texture = ImageTexture.create_from_image(image)
+			images[p_image_index] = image
+			_set_wh_labels(p_image_index, image.get_width(), image.get_height())
+			if p_image_index == IMAGE_NORMAL:
+				_set_normal_vector(image)
+			if p_image_index == IMAGE_HEIGHT or p_image_index == IMAGE_ROUGHNESS:
+				set_channel_fn.call(image.detect_used_channels())
+	
+	var os_drop_fn: Callable = func(files: PackedStringArray) -> void:
+		# OS drag drop holds mouse focus until released,
+		# Get mouse pos and check directly if inside texture_rect
+		var rect = texture_button.get_global_rect()
+		var mouse_position = texture_button.get_global_mouse_position()
+		if rect.has_point(mouse_position):
+			if files.size() != 1:
+				_show_message(ERROR, "Cannot load multiple files")
+			else:
+				line_edit.text = files[0]
+				load_image_fn.call(files[0])
+	
+	var godot_drop_fn: Callable = func(path: String) -> void:
+		path = ProjectSettings.globalize_path(path)
+		line_edit.text = path
+		load_image_fn.call(path)
+	
+	var open_fn: Callable = func() -> void:
+		open_file_dialog.current_path = last_opened_directory
+		if last_file_selected_fn != no_op:
+			open_file_dialog.file_selected.disconnect(last_file_selected_fn)
+		last_file_selected_fn = func(path: String) -> void: 
+			line_edit.text = path
+			load_image_fn.call(path)
+		open_file_dialog.file_selected.connect(last_file_selected_fn)
+		open_file_dialog.popup_centered_ratio()
+	
+	var line_edit_submit_fn: Callable = func(path: String) -> void:
+		line_edit.text = path
+		load_image_fn.call(path)
+	
+	var clear_fn: Callable = func() -> void:
+		line_edit.text = ""
+		texture_rect.texture = null
+		images[p_image_index] = null
+		_set_wh_labels(p_image_index, -1, -1)
+	
+	line_edit.text_submitted.connect(line_edit_submit_fn)
+	file_pick_button.pressed.connect(open_fn)
+	texture_button.pressed.connect(open_fn)
+	clear_button.pressed.connect(clear_fn)
+	texture_button.dropped.connect(godot_drop_fn)
+	window.files_dropped.connect(os_drop_fn)
+	
+	if p_image_index == IMAGE_HEIGHT:
+		var lumin_fn: Callable = func() -> void:
+			if !images[IMAGE_ALBEDO]:
+				_show_message(ERROR, "Albedo Image Required for Operation")
+			else:
+				line_edit.text = "Generated Height"
+				var height_texture: Image = Terrain3DUtil.luminance_to_height(images[IMAGE_ALBEDO])
+				if height_texture.is_empty():
+					_show_message(ERROR, "Height Texture Generation error")
+				# blur the image by resizing down and back..
+				var w: int = height_texture.get_width()
+				var h: int = height_texture.get_height()
+				height_texture.resize(w / 4, h / 4)
+				height_texture.resize(w, h, Image.INTERPOLATE_CUBIC)
+				# "Load" the height texture
+				images[IMAGE_HEIGHT] = height_texture
+				texture_rect.texture = ImageTexture.create_from_image(images[IMAGE_HEIGHT])
+				_set_wh_labels(IMAGE_HEIGHT, height_texture.get_width(), height_texture.get_height())
+				set_channel_fn.call(Image.USED_CHANNELS_R)
+				_show_message(INFO, "Height Texture generated sucsessfully")
+		lumin_height_button.pressed.connect(lumin_fn)
+	plugin.ui.set_button_editor_icon(file_pick_button, "Folder")
+	plugin.ui.set_button_editor_icon(clear_button, "Remove")
+
+
+func _set_wh_labels(p_image_index: int, width: int, height: int) -> void:
+	var w: String = ""
+	var h: String = ""
+	if width > 0 and height > 0:
+		w = "w: " + str(width)
+		h = "h: " + str(height)
+	match p_image_index:
+		0:
+			window.find_child("AlbedoW").text = w
+			window.find_child("AlbedoH").text = h
+		1:
+			window.find_child("HeightW").text = w
+			window.find_child("HeightH").text = h
+		2:
+			window.find_child("NormalW").text = w
+			window.find_child("NormalH").text = h
+		3:
+			window.find_child("RoughnessW").text = w
+			window.find_child("RoughnessH").text = h
+
+
+func _show_message(p_level: int, p_text: String) -> void:
+	status_label.text = p_text
+	match p_level:
+		INFO:
+			print("Terrain3DChannelPacker: " + p_text)
+			status_label.add_theme_color_override("font_color", Color(0, 0.82, 0.14))
+		WARN:
+			push_warning("Terrain3DChannelPacker: " + p_text)
+			status_label.add_theme_color_override("font_color", Color(0.9, 0.9, 0))
+		ERROR,_:
+			push_error("Terrain3DChannelPacker: " + p_text)
+			status_label.add_theme_color_override("font_color", Color(0.9, 0, 0))
+
+
+func _create_import_file(png_path: String) -> void:
+	var dst_import_path: String = png_path + ".import"
+	var file: FileAccess = FileAccess.open(TEMPLATE_PATH, FileAccess.READ)
+	var template_content: String = file.get_as_text()
+	file.close()
+	template_content = template_content.replace(
+		"$SOURCE_FILE", png_path).replace(
+		"$HIGH_QUALITY", str(high_quality_checkbox.button_pressed)).replace(
+		"$GENERATE_MIPMAPS", str(generate_mipmaps_checkbox.button_pressed)
+	)
+	var import_content: String = template_content
+	file = FileAccess.open(dst_import_path, FileAccess.WRITE)
+	file.store_string(import_content)
+	file.close()
+
+
+func _on_pack_button_pressed() -> void:
+	packing_albedo = images[IMAGE_ALBEDO] != null and images[IMAGE_HEIGHT] != null
+	var packing_normal_roughness: bool = images[IMAGE_NORMAL] != null and images[IMAGE_ROUGHNESS] != null
+	
+	if not packing_albedo and not packing_normal_roughness:
+		_show_message(WARN, "Please select an albedo and height texture or a normal and roughness texture")
+		return
+	if packing_albedo:
+		save_file_dialog.current_path = last_saved_directory + "packed_albedo_height"
+		save_file_dialog.title = "Save Packed Albedo/Height Texture"
+		save_file_dialog.popup_centered_ratio()
+		if packing_normal_roughness:
+			queue_pack_normal_roughness = true
+		return
+	if packing_normal_roughness:
+		save_file_dialog.current_path = last_saved_directory + "packed_normal_roughness"
+		save_file_dialog.title = "Save Packed Normal/Roughness Texture"
+		save_file_dialog.popup_centered_ratio()
+
+
+func _on_save_file_selected(p_dst_path) -> void:
+	last_saved_directory = p_dst_path.get_base_dir() + "/"
+	var error: int
+	if packing_albedo:
+		error = _pack_textures(images[IMAGE_ALBEDO], images[IMAGE_HEIGHT], p_dst_path, false,
+		invert_height_checkbox.button_pressed, false, height_channel_selected)
+	else:
+		error = _pack_textures(images[IMAGE_NORMAL], images[IMAGE_ROUGHNESS], p_dst_path,
+			invert_green_checkbox.button_pressed, invert_smooth_checkbox.button_pressed,
+			align_normals_checkbox.button_pressed, roughness_channel_selected)
+	
+	if error == OK:
+		EditorInterface.get_resource_filesystem().scan()
+		if window.visible:
+			window.hide()
+		await EditorInterface.get_resource_filesystem().resources_reimported
+		# wait 1 extra frame, to ensure the UI is responsive.
+		await RenderingServer.frame_post_draw
+		window.show()
+	
+	if queue_pack_normal_roughness:
+		queue_pack_normal_roughness = false
+		packing_albedo = false
+		save_file_dialog.current_path = last_saved_directory + "packed_normal_roughness"
+		save_file_dialog.title = "Save Packed Normal/Roughness Texture"
+		
+		save_file_dialog.call_deferred("popup_centered_ratio")
+		save_file_dialog.call_deferred("move_to_foreground")
+
+
+func _alignment_basis(normal: Vector3) -> Basis:
+	var up: Vector3 = Vector3(0, 0, 1)
+	var v: Vector3 = normal.cross(up)
+	var c: float = normal.dot(up)
+	var k: float = 1.0 / (1.0 + c)
+	
+	var vxy: float = v.x * v.y * k
+	var vxz: float = v.x * v.z * k
+	var vyz: float = v.y * v.z * k
+	
+	return Basis(Vector3(v.x * v.x * k + c, vxy - v.z, vxz + v.y),
+		Vector3(vxy + v.z, v.y * v.y * k + c, vyz - v.x),
+		Vector3(vxz - v.y, vyz + v.x, v.z * v.z * k + c)
+	)
+
+
+func _set_normal_vector(source: Image, quiet: bool = false) -> void:
+	# Calculate texture normal sum direction
+	var normal: Image = source
+	var sum: Color = Color(0.0, 0.0, 0.0, 0.0)
+	for x in normal.get_height():
+		for y in normal.get_width():
+			sum += normal.get_pixel(x, y)
+	var div: float = normal.get_height() * normal.get_width()
+	sum /= Color(div, div, div)
+	sum *= 2.0
+	sum -= Color(1.0, 1.0, 1.0)
+	normal_vector = Vector3(sum.r, sum.g, sum.b).normalized()
+	if normal_vector.dot(Vector3(0.0, 0.0, 1.0)) < 0.999 && !quiet:
+		_show_message(WARN, "Normal Texture Not Orthoganol to UV plane.\nFor Compatability with Detiling and Rotation, Select Orthoganolize Normals")
+
+
+func _align_normals(source: Image, iteration: int = 0) -> void:
+	# generate matrix to re-align the normalmap
+	var mat3: Basis = _alignment_basis(normal_vector)
+	# re-align the normal map pixels
+	for x in source.get_height():
+		for y in source.get_width():
+			var old_pixel: Color = source.get_pixel(x, y)
+			var vector_pixel: Vector3 = Vector3(old_pixel.r, old_pixel.g, old_pixel.b)
+			vector_pixel *= 2.0
+			vector_pixel -= Vector3.ONE
+			vector_pixel = vector_pixel.normalized()
+			vector_pixel = vector_pixel * mat3
+			vector_pixel += Vector3.ONE
+			vector_pixel *= 0.5
+			var new_pixel: Color = Color(vector_pixel.x, vector_pixel.y, vector_pixel.z, old_pixel.a)
+			source.set_pixel(x, y, new_pixel)
+	_set_normal_vector(source, true)
+	if normal_vector.dot(Vector3(0.0, 0.0, 1.0)) < 0.999 && iteration < 3:
+		++iteration
+		_align_normals(source, iteration)
+
+
+func _pack_textures(p_rgb_image: Image, p_a_image: Image, p_dst_path: String, p_invert_green: bool,
+	p_invert_smooth: bool, p_align_normals : bool, p_alpha_channel: int) -> Error:
+	if p_rgb_image and p_a_image:
+		if p_rgb_image.get_size() != p_a_image.get_size() and !resize_toggle_checkbox.button_pressed:
+			_show_message(ERROR, "Textures must be the same size.\nEnable resize to override image dimensions")
+			return FAILED
+	
+		if resize_toggle_checkbox.button_pressed:
+			var size: int = max(128, resize_option_box.value)
+			p_rgb_image.resize(size, size, Image.INTERPOLATE_CUBIC)
+			p_a_image.resize(size, size, Image.INTERPOLATE_CUBIC)
+	
+		if p_align_normals and normal_vector.dot(Vector3(0.0, 0.0, 1.0)) < 0.999:
+			_align_normals(p_rgb_image)
+		elif p_align_normals:
+			_show_message(INFO, "Alignment OK, skipping Normal Orthogonalization")
+	
+		var output_image: Image = Terrain3DUtil.pack_image(p_rgb_image, p_a_image,
+			p_invert_green, p_invert_smooth, p_alpha_channel)
+	
+		if not output_image:
+			_show_message(ERROR, "Failed to pack textures")
+			return FAILED
+		if output_image.detect_used_channels() != 5:
+			_show_message(ERROR, "Packing Error, Alpha Channel empty")
+			return FAILED
+	
+		output_image.save_png(p_dst_path)
+		_create_import_file(p_dst_path)
+		_show_message(INFO, "Packed to " + p_dst_path + ".")
+		return OK
+	else:
+		_show_message(ERROR, "Failed to load one or more textures")
+		return FAILED

addons/terrain_3d/src/channel_packer.tscn

@@ -0,0 +1,553 @@
+[gd_scene load_steps=7 format=3 uid="uid://nud6dwjcnj5v"]
+
+[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_ysabf"]
+bg_color = Color(0.211765, 0.239216, 0.290196, 1)
+
+[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_lcvna"]
+bg_color = Color(0.168627, 0.211765, 0.266667, 1)
+border_width_left = 3
+border_width_top = 3
+border_width_right = 3
+border_width_bottom = 3
+border_color = Color(0.270588, 0.435294, 0.580392, 1)
+corner_radius_top_left = 5
+corner_radius_top_right = 5
+corner_radius_bottom_right = 5
+corner_radius_bottom_left = 5
+
+[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_cb0xf"]
+bg_color = Color(0.137255, 0.137255, 0.137255, 1)
+draw_center = false
+border_width_left = 3
+border_width_top = 3
+border_width_right = 3
+border_width_bottom = 3
+border_color = Color(0.784314, 0.784314, 0.784314, 1)
+corner_radius_top_left = 5
+corner_radius_top_right = 5
+corner_radius_bottom_right = 5
+corner_radius_bottom_left = 5
+
+[sub_resource type="StyleBoxEmpty" id="StyleBoxEmpty_7qdas"]
+
+[sub_resource type="ButtonGroup" id="ButtonGroup_wnxik"]
+
+[sub_resource type="ButtonGroup" id="ButtonGroup_bs6ki"]
+
+[node name="Window" type="Window"]
+title = "Terrain3D Channel Packer"
+initial_position = 1
+size = Vector2i(680, 835)
+unresizable = true
+always_on_top = true
+
+[node name="Panel" type="Panel" parent="."]
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+theme_override_styles/panel = SubResource("StyleBoxFlat_ysabf")
+
+[node name="MarginContainer" type="MarginContainer" parent="Panel"]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_left = 5.0
+offset_top = 5.0
+offset_right = -5.0
+offset_bottom = 5.0
+grow_horizontal = 2
+grow_vertical = 2
+theme_override_constants/margin_left = 5
+theme_override_constants/margin_top = 5
+theme_override_constants/margin_right = 5
+theme_override_constants/margin_bottom = 5
+
+[node name="VBoxContainer" type="VBoxContainer" parent="Panel/MarginContainer"]
+layout_mode = 2
+theme_override_constants/separation = 10
+
+[node name="AlbedoHeightPanel" type="Panel" parent="Panel/MarginContainer/VBoxContainer"]
+custom_minimum_size = Vector2(0, 290)
+layout_mode = 2
+mouse_filter = 1
+theme_override_styles/panel = SubResource("StyleBoxFlat_lcvna")
+
+[node name="MarginContainer" type="MarginContainer" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel"]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+theme_override_constants/margin_left = 10
+theme_override_constants/margin_top = 10
+theme_override_constants/margin_right = 10
+theme_override_constants/margin_bottom = 10
+
+[node name="HBoxContainer" type="HBoxContainer" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer"]
+layout_mode = 2
+
+[node name="AlbedoVBox" type="VBoxContainer" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer"]
+layout_mode = 2
+size_flags_horizontal = 3
+
+[node name="AlbedoLabel" type="Label" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/AlbedoVBox"]
+layout_mode = 2
+text = "Albedo texture"
+
+[node name="AlbedoHBox" type="HBoxContainer" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/AlbedoVBox"]
+layout_mode = 2
+
+[node name="LineEdit" type="LineEdit" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/AlbedoVBox/AlbedoHBox"]
+layout_mode = 2
+size_flags_horizontal = 3
+
+[node name="PickButton" type="Button" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/AlbedoVBox/AlbedoHBox"]
+layout_mode = 2
+
+[node name="ClearButton" type="Button" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/AlbedoVBox/AlbedoHBox"]
+layout_mode = 2
+
+[node name="MarginContainer" type="MarginContainer" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/AlbedoVBox"]
+layout_mode = 2
+size_flags_vertical = 4
+theme_override_constants/margin_top = 10
+
+[node name="Panel" type="Panel" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/AlbedoVBox/MarginContainer"]
+custom_minimum_size = Vector2(110, 110)
+layout_mode = 2
+size_flags_horizontal = 4
+size_flags_vertical = 4
+theme_override_styles/panel = SubResource("StyleBoxFlat_cb0xf")
+
+[node name="TextureRect" type="TextureRect" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/AlbedoVBox/MarginContainer/Panel"]
+layout_mode = 1
+anchors_preset = 8
+anchor_left = 0.5
+anchor_top = 0.5
+anchor_right = 0.5
+anchor_bottom = 0.5
+offset_left = -50.0
+offset_top = -50.0
+offset_right = 50.0
+offset_bottom = 50.0
+grow_horizontal = 2
+grow_vertical = 2
+expand_mode = 1
+
+[node name="TextureButton" type="Button" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/AlbedoVBox/MarginContainer/Panel"]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+theme_override_styles/normal = SubResource("StyleBoxEmpty_7qdas")
+
+[node name="AlbedoWHHBox" type="HBoxContainer" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/AlbedoVBox"]
+layout_mode = 2
+alignment = 1
+
+[node name="AlbedoW" type="Label" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/AlbedoVBox/AlbedoWHHBox"]
+layout_mode = 2
+horizontal_alignment = 1
+
+[node name="AlbedoH" type="Label" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/AlbedoVBox/AlbedoWHHBox"]
+layout_mode = 2
+horizontal_alignment = 1
+
+[node name="HBoxContainer2" type="HBoxContainer" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/AlbedoVBox"]
+layout_mode = 2
+alignment = 1
+
+[node name="LuminanceAsHeightButton" type="Button" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/AlbedoVBox/HBoxContainer2"]
+layout_mode = 2
+text = " Generate Height from Luminance"
+icon_alignment = 2
+
+[node name="HeightVBox" type="VBoxContainer" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer"]
+layout_mode = 2
+size_flags_horizontal = 3
+
+[node name="HeightLabel" type="Label" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/HeightVBox"]
+layout_mode = 2
+text = "Height texture"
+
+[node name="HeightHBox" type="HBoxContainer" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/HeightVBox"]
+layout_mode = 2
+
+[node name="LineEdit" type="LineEdit" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/HeightVBox/HeightHBox"]
+layout_mode = 2
+size_flags_horizontal = 3
+
+[node name="PickButton" type="Button" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/HeightVBox/HeightHBox"]
+layout_mode = 2
+
+[node name="ClearButton" type="Button" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/HeightVBox/HeightHBox"]
+layout_mode = 2
+
+[node name="MarginContainer" type="MarginContainer" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/HeightVBox"]
+layout_mode = 2
+size_flags_vertical = 4
+theme_override_constants/margin_top = 10
+
+[node name="Panel" type="Panel" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/HeightVBox/MarginContainer"]
+custom_minimum_size = Vector2(110, 110)
+layout_mode = 2
+size_flags_horizontal = 4
+size_flags_vertical = 4
+theme_override_styles/panel = SubResource("StyleBoxFlat_cb0xf")
+
+[node name="TextureRect" type="TextureRect" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/HeightVBox/MarginContainer/Panel"]
+layout_mode = 1
+anchors_preset = 8
+anchor_left = 0.5
+anchor_top = 0.5
+anchor_right = 0.5
+anchor_bottom = 0.5
+offset_left = -50.0
+offset_top = -50.0
+offset_right = 50.0
+offset_bottom = 50.0
+grow_horizontal = 2
+grow_vertical = 2
+expand_mode = 1
+
+[node name="TextureButton" type="Button" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/HeightVBox/MarginContainer/Panel"]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+theme_override_styles/normal = SubResource("StyleBoxEmpty_7qdas")
+
+[node name="HeightWHHBox" type="HBoxContainer" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/HeightVBox"]
+layout_mode = 2
+alignment = 1
+
+[node name="HeightW" type="Label" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/HeightVBox/HeightWHHBox"]
+layout_mode = 2
+horizontal_alignment = 1
+
+[node name="HeightH" type="Label" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/HeightVBox/HeightWHHBox"]
+layout_mode = 2
+horizontal_alignment = 1
+
+[node name="HBoxContainer2" type="HBoxContainer" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/HeightVBox"]
+layout_mode = 2
+alignment = 1
+
+[node name="ConvertDepthToHeight" type="CheckBox" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/HeightVBox/HBoxContainer2"]
+layout_mode = 2
+text = " Convert Depth to Height"
+icon_alignment = 2
+
+[node name="HBoxContainer" type="HBoxContainer" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/HeightVBox"]
+layout_mode = 2
+alignment = 1
+
+[node name="HeightChannelLabel" type="Label" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/HeightVBox/HBoxContainer"]
+layout_mode = 2
+text = " Source Channel: "
+horizontal_alignment = 2
+
+[node name="HeightChannelR" type="Button" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/HeightVBox/HBoxContainer"]
+layout_mode = 2
+toggle_mode = true
+button_pressed = true
+button_group = SubResource("ButtonGroup_wnxik")
+text = "R"
+
+[node name="HeightChannelB" type="Button" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/HeightVBox/HBoxContainer"]
+layout_mode = 2
+toggle_mode = true
+button_group = SubResource("ButtonGroup_wnxik")
+text = "G"
+
+[node name="HeightChannelG" type="Button" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/HeightVBox/HBoxContainer"]
+layout_mode = 2
+toggle_mode = true
+button_group = SubResource("ButtonGroup_wnxik")
+text = "B"
+
+[node name="HeightChannelA" type="Button" parent="Panel/MarginContainer/VBoxContainer/AlbedoHeightPanel/MarginContainer/HBoxContainer/HeightVBox/HBoxContainer"]
+layout_mode = 2
+toggle_mode = true
+button_group = SubResource("ButtonGroup_wnxik")
+text = "A"
+
+[node name="NormalRoughnessPanel" type="Panel" parent="Panel/MarginContainer/VBoxContainer"]
+custom_minimum_size = Vector2(0, 290)
+layout_mode = 2
+theme_override_styles/panel = SubResource("StyleBoxFlat_lcvna")
+
+[node name="MarginContainer" type="MarginContainer" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel"]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+theme_override_constants/margin_left = 10
+theme_override_constants/margin_top = 10
+theme_override_constants/margin_right = 10
+theme_override_constants/margin_bottom = 10
+
+[node name="HBoxContainer" type="HBoxContainer" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer"]
+layout_mode = 2
+
+[node name="NormalVBox" type="VBoxContainer" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer"]
+layout_mode = 2
+size_flags_horizontal = 3
+
+[node name="NormalLabel" type="Label" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/NormalVBox"]
+layout_mode = 2
+text = "Normal texture"
+
+[node name="NormalHBox" type="HBoxContainer" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/NormalVBox"]
+layout_mode = 2
+
+[node name="LineEdit" type="LineEdit" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/NormalVBox/NormalHBox"]
+layout_mode = 2
+size_flags_horizontal = 3
+
+[node name="PickButton" type="Button" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/NormalVBox/NormalHBox"]
+layout_mode = 2
+
+[node name="ClearButton" type="Button" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/NormalVBox/NormalHBox"]
+layout_mode = 2
+
+[node name="MarginContainer" type="MarginContainer" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/NormalVBox"]
+layout_mode = 2
+size_flags_vertical = 4
+theme_override_constants/margin_top = 10
+
+[node name="Panel" type="Panel" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/NormalVBox/MarginContainer"]
+custom_minimum_size = Vector2(110, 110)
+layout_mode = 2
+size_flags_horizontal = 4
+size_flags_vertical = 4
+theme_override_styles/panel = SubResource("StyleBoxFlat_cb0xf")
+
+[node name="TextureRect" type="TextureRect" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/NormalVBox/MarginContainer/Panel"]
+layout_mode = 1
+anchors_preset = 8
+anchor_left = 0.5
+anchor_top = 0.5
+anchor_right = 0.5
+anchor_bottom = 0.5
+offset_left = -50.0
+offset_top = -50.0
+offset_right = 50.0
+offset_bottom = 50.0
+grow_horizontal = 2
+grow_vertical = 2
+expand_mode = 1
+
+[node name="TextureButton" type="Button" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/NormalVBox/MarginContainer/Panel"]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+theme_override_styles/normal = SubResource("StyleBoxEmpty_7qdas")
+
+[node name="NormalWHHBox" type="HBoxContainer" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/NormalVBox"]
+layout_mode = 2
+alignment = 1
+
+[node name="NormalW" type="Label" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/NormalVBox/NormalWHHBox"]
+layout_mode = 2
+horizontal_alignment = 1
+
+[node name="NormalH" type="Label" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/NormalVBox/NormalWHHBox"]
+layout_mode = 2
+horizontal_alignment = 1
+
+[node name="HBoxContainer" type="HBoxContainer" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/NormalVBox"]
+layout_mode = 2
+alignment = 1
+
+[node name="InvertGreenChannelCheckBox" type="CheckBox" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/NormalVBox/HBoxContainer"]
+layout_mode = 2
+text = " Convert DirectX to OpenGL"
+
+[node name="HBoxContainer2" type="HBoxContainer" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/NormalVBox"]
+layout_mode = 2
+alignment = 1
+
+[node name="AlignNormalsCheckBox" type="CheckBox" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/NormalVBox/HBoxContainer2"]
+layout_mode = 2
+text = " Orthoganolise Normals"
+
+[node name="RoughnessVBox" type="VBoxContainer" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer"]
+layout_mode = 2
+size_flags_horizontal = 3
+
+[node name="RoughnessLabel" type="Label" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/RoughnessVBox"]
+layout_mode = 2
+text = "Roughness texture"
+
+[node name="RoughnessHBox" type="HBoxContainer" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/RoughnessVBox"]
+layout_mode = 2
+
+[node name="LineEdit" type="LineEdit" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/RoughnessVBox/RoughnessHBox"]
+layout_mode = 2
+size_flags_horizontal = 3
+
+[node name="PickButton" type="Button" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/RoughnessVBox/RoughnessHBox"]
+layout_mode = 2
+
+[node name="ClearButton" type="Button" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/RoughnessVBox/RoughnessHBox"]
+layout_mode = 2
+
+[node name="MarginContainer" type="MarginContainer" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/RoughnessVBox"]
+layout_mode = 2
+size_flags_vertical = 4
+theme_override_constants/margin_top = 10
+
+[node name="Panel" type="Panel" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/RoughnessVBox/MarginContainer"]
+custom_minimum_size = Vector2(110, 110)
+layout_mode = 2
+size_flags_horizontal = 4
+size_flags_vertical = 4
+theme_override_styles/panel = SubResource("StyleBoxFlat_cb0xf")
+
+[node name="TextureRect" type="TextureRect" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/RoughnessVBox/MarginContainer/Panel"]
+layout_mode = 1
+anchors_preset = 8
+anchor_left = 0.5
+anchor_top = 0.5
+anchor_right = 0.5
+anchor_bottom = 0.5
+offset_left = -50.0
+offset_top = -50.0
+offset_right = 50.0
+offset_bottom = 50.0
+grow_horizontal = 2
+grow_vertical = 2
+expand_mode = 1
+
+[node name="TextureButton" type="Button" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/RoughnessVBox/MarginContainer/Panel"]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+theme_override_styles/normal = SubResource("StyleBoxEmpty_7qdas")
+
+[node name="RoughnessWHHBox" type="HBoxContainer" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/RoughnessVBox"]
+layout_mode = 2
+alignment = 1
+
+[node name="RoughnessW" type="Label" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/RoughnessVBox/RoughnessWHHBox"]
+layout_mode = 2
+horizontal_alignment = 1
+
+[node name="RoughnessH" type="Label" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/RoughnessVBox/RoughnessWHHBox"]
+layout_mode = 2
+horizontal_alignment = 1
+
+[node name="HBoxContainer2" type="HBoxContainer" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/RoughnessVBox"]
+layout_mode = 2
+alignment = 1
+
+[node name="InvertSmoothCheckBox" type="CheckBox" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/RoughnessVBox/HBoxContainer2"]
+layout_mode = 2
+text = " Convert Smoothness to Roughness"
+
+[node name="HBoxContainer" type="HBoxContainer" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/RoughnessVBox"]
+layout_mode = 2
+alignment = 1
+
+[node name="RoughnessChannelLabel" type="Label" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/RoughnessVBox/HBoxContainer"]
+layout_mode = 2
+text = " Source Channel: "
+horizontal_alignment = 2
+
+[node name="RoughnessChannelR" type="Button" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/RoughnessVBox/HBoxContainer"]
+layout_mode = 2
+toggle_mode = true
+button_pressed = true
+button_group = SubResource("ButtonGroup_bs6ki")
+text = "R"
+
+[node name="RoughnessChannelG" type="Button" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/RoughnessVBox/HBoxContainer"]
+layout_mode = 2
+toggle_mode = true
+button_group = SubResource("ButtonGroup_bs6ki")
+text = "G"
+
+[node name="RoughnessChannelB" type="Button" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/RoughnessVBox/HBoxContainer"]
+layout_mode = 2
+toggle_mode = true
+button_group = SubResource("ButtonGroup_bs6ki")
+text = "B"
+
+[node name="RoughnessChannelA" type="Button" parent="Panel/MarginContainer/VBoxContainer/NormalRoughnessPanel/MarginContainer/HBoxContainer/RoughnessVBox/HBoxContainer"]
+layout_mode = 2
+toggle_mode = true
+button_group = SubResource("ButtonGroup_bs6ki")
+text = "A"
+
+[node name="GeneralOptionsLabel" type="Label" parent="Panel/MarginContainer/VBoxContainer"]
+layout_mode = 2
+text = "General Options"
+horizontal_alignment = 1
+vertical_alignment = 1
+
+[node name="GeneralOptionsHBox" type="HBoxContainer" parent="Panel/MarginContainer/VBoxContainer"]
+custom_minimum_size = Vector2(0, 35)
+layout_mode = 2
+alignment = 1
+
+[node name="ResizeToggle" type="CheckBox" parent="Panel/MarginContainer/VBoxContainer/GeneralOptionsHBox"]
+layout_mode = 2
+text = " Resize Packed Image"
+
+[node name="ResizeOptionButton" type="SpinBox" parent="Panel/MarginContainer/VBoxContainer/GeneralOptionsHBox"]
+visible = false
+layout_mode = 2
+tooltip_text = "A value of 0 disables resizing."
+min_value = 128.0
+max_value = 4096.0
+step = 128.0
+value = 1024.0
+
+[node name="VSeparator" type="VSeparator" parent="Panel/MarginContainer/VBoxContainer/GeneralOptionsHBox"]
+layout_mode = 2
+
+[node name="GenerateMipmapsCheckBox" type="CheckBox" parent="Panel/MarginContainer/VBoxContainer/GeneralOptionsHBox"]
+layout_mode = 2
+button_pressed = true
+text = "Generate Mipmaps"
+
+[node name="HighQualityCheckBox" type="CheckBox" parent="Panel/MarginContainer/VBoxContainer/GeneralOptionsHBox"]
+layout_mode = 2
+text = "Import High Quality"
+
+[node name="PackButton" type="Button" parent="Panel/MarginContainer/VBoxContainer"]
+layout_mode = 2
+text = "Pack textures as..."
+
+[node name="StatusLabel" type="Label" parent="Panel/MarginContainer/VBoxContainer"]
+custom_minimum_size = Vector2(0, 60)
+layout_mode = 2
+horizontal_alignment = 1
+autowrap_mode = 3
+
+[node name="HBoxContainer" type="HBoxContainer" parent="Panel/MarginContainer/VBoxContainer"]
+layout_mode = 2
+alignment = 1
+
+[node name="CloseButton" type="Button" parent="Panel/MarginContainer/VBoxContainer/HBoxContainer"]
+layout_mode = 2
+text = "Close"
+
+[connection signal="toggled" from="Panel/MarginContainer/VBoxContainer/GeneralOptionsHBox/ResizeToggle" to="Panel/MarginContainer/VBoxContainer/GeneralOptionsHBox/ResizeOptionButton" method="set_visible"]