-Fixed a few bugs in Viewport

-Made a few demos using Viewport to show it's true power!
-Fixed some start-up error messages.

viewport/2d_in_3d/engine.cfg

@@ -0,0 +1,22 @@
+[application]
+
+name="Pong 2D in 3D"
+main_scene="res://pong3d.scn"
+icon="res://icon.png"
+
+[display]
+
+width=640
+height=400
+stretch_2d=true
+
+[input]
+
+left_move_up=[key(A)]
+left_move_down=[key(Z)]
+right_move_up=[key(Up)]
+right_move_down=[key(Down)]
+
+[render]
+
+default_clear_color=#ff000000

viewport/2d_in_3d/pong.gd

@@ -0,0 +1,73 @@
+
+extends Node2D
+
+# member variables here, example:
+# var a=2
+# var b="textvar"
+const INITIAL_BALL_SPEED = 80
+var ball_speed = INITIAL_BALL_SPEED
+var screen_size = Vector2(640,400)
+#default ball direction
+var direction = Vector2(-1,0)
+var pad_size = Vector2(8,32)
+const PAD_SPEED = 150
+
+
+func _process(delta):
+
+
+	# get ball positio and pad rectangles
+	var ball_pos = get_node("ball").get_pos()
+	var left_rect = Rect2( get_node("left").get_pos() - pad_size*0.5, pad_size )
+	var right_rect = Rect2( get_node("right").get_pos() - pad_size*0.5, pad_size )
+	
+	#integrate new ball postion
+	ball_pos+=direction*ball_speed*delta
+	
+	#flip when touching roof or floor
+	if ( (ball_pos.y<0 and direction.y <0) or (ball_pos.y>screen_size.y and direction.y>0)):
+		direction.y = -direction.y
+		
+	#flip, change direction and increase speed when touching pads	
+	if ( (left_rect.has_point(ball_pos) and direction.x < 0) or (right_rect.has_point(ball_pos) and direction.x > 0)):
+		direction.x=-direction.x
+		ball_speed*=1.1
+		direction.y=randf()*2.0-1
+		direction = direction.normalized()
+
+	#check gameover
+	if (ball_pos.x<0 or ball_pos.x>screen_size.x):
+		ball_pos=screen_size*0.5
+		ball_speed=INITIAL_BALL_SPEED
+		direction=Vector2(-1,0)
+			
+						
+	get_node("ball").set_pos(ball_pos)
+
+	#move left pad	
+	var left_pos = get_node("left").get_pos()
+	
+	if (left_pos.y > 0 and Input.is_action_pressed("left_move_up")):
+		left_pos.y+=-PAD_SPEED*delta
+	if (left_pos.y < screen_size.y and Input.is_action_pressed("left_move_down")):
+		left_pos.y+=PAD_SPEED*delta
+		
+	get_node("left").set_pos(left_pos)
+		
+	#move right pad	
+	var right_pos = get_node("right").get_pos()
+	
+	if (right_pos.y > 0 and Input.is_action_pressed("right_move_up")):
+		right_pos.y+=-PAD_SPEED*delta
+	if (right_pos.y < screen_size.y and Input.is_action_pressed("right_move_down")):
+		right_pos.y+=PAD_SPEED*delta
+		
+	get_node("right").set_pos(right_pos)
+	
+	 
+
+func _ready():
+	screen_size = get_viewport_rect().size # get actual size
+	pad_size = get_node("left").get_texture().get_size()
+	set_process(true)
+

viewport/2d_in_3d/pong.xml

@@ -0,0 +1,183 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<resource_file type="PackedScene" subresource_count="6" version="0.99" version_name="Godot Engine v0.99.3735-pre-beta">
+	<ext_resource path="res://pong.*" type="GDScript"></ext_resource>
+	<ext_resource path="res://separator.*" type="ImageTexture"></ext_resource>
+	<ext_resource path="res://left_pallete.*" type="ImageTexture"></ext_resource>
+	<ext_resource path="res://right_pallete.*" type="ImageTexture"></ext_resource>
+	<ext_resource path="res://ball.*" type="ImageTexture"></ext_resource>
+	<main_resource>
+		<dictionary name="_bundled" shared="false">
+			<string> "names" </string>
+			<string_array  len="27">
+				<string> "game" </string>
+				<string> "Node2D" </string>
+				<string> "visibility/visible" </string>
+				<string> "visibility/opacity" </string>
+				<string> "visibility/self_opacity" </string>
+				<string> "visibility/on_top" </string>
+				<string> "transform/pos" </string>
+				<string> "transform/rot" </string>
+				<string> "transform/scale" </string>
+				<string> "script/script" </string>
+				<string> "__meta__" </string>
+				<string> "left" </string>
+				<string> "Sprite" </string>
+				<string> "texture" </string>
+				<string> "centered" </string>
+				<string> "offset" </string>
+				<string> "flip_h" </string>
+				<string> "flip_v" </string>
+				<string> "vframes" </string>
+				<string> "hframes" </string>
+				<string> "frame" </string>
+				<string> "modulate" </string>
+				<string> "region" </string>
+				<string> "region_rect" </string>
+				<string> "right" </string>
+				<string> "separator" </string>
+				<string> "ball" </string>
+			</string_array>
+			<string> "version" </string>
+			<int> 1 </int>
+			<string> "conn_count" </string>
+			<int> 0 </int>
+			<string> "node_count" </string>
+			<int> 5 </int>
+			<string> "variants" </string>
+			<array  len="20" shared="false">
+				<bool> True </bool>
+				<real> 1 </real>
+				<vector2> 0, 0 </vector2>
+				<real> 0 </real>
+				<vector2> 1, 1 </vector2>
+				<resource  resource_type="GDScript" path="res://pong.*">  </resource>
+				<dictionary  shared="false">
+					<string> "__editor_plugin_states__" </string>
+					<dictionary  shared="false">
+						<string> "Script" </string>
+						<dictionary  shared="false">
+							<string> "current" </string>
+							<int> 0 </int>
+							<string> "sources" </string>
+							<array  len="1" shared="false">
+								<string> "res://pong.gd" </string>
+							</array>
+						</dictionary>
+						<string> "2D" </string>
+						<dictionary  shared="false">
+							<string> "pixel_snap" </string>
+							<bool> True </bool>
+							<string> "zoom" </string>
+							<real> 1.108033 </real>
+							<string> "ofs" </string>
+							<vector2> -54.59, -36.0052 </vector2>
+						</dictionary>
+						<string> "3D" </string>
+						<dictionary  shared="false">
+							<string> "zfar" </string>
+							<real> 500 </real>
+							<string> "fov" </string>
+							<real> 45 </real>
+							<string> "viewports" </string>
+							<array  len="4" shared="false">
+								<dictionary  shared="false">
+									<string> "distance" </string>
+									<real> 4 </real>
+									<string> "x_rot" </string>
+									<real> 0 </real>
+									<string> "y_rot" </string>
+									<real> 0 </real>
+									<string> "use_orthogonal" </string>
+									<bool> False </bool>
+									<string> "use_environment" </string>
+									<bool> False </bool>
+									<string> "pos" </string>
+									<vector3> 0, 0, 0 </vector3>
+								</dictionary>
+								<dictionary  shared="false">
+									<string> "distance" </string>
+									<real> 4 </real>
+									<string> "x_rot" </string>
+									<real> 0 </real>
+									<string> "y_rot" </string>
+									<real> 0 </real>
+									<string> "use_orthogonal" </string>
+									<bool> False </bool>
+									<string> "use_environment" </string>
+									<bool> False </bool>
+									<string> "pos" </string>
+									<vector3> 0, 0, 0 </vector3>
+								</dictionary>
+								<dictionary  shared="false">
+									<string> "distance" </string>
+									<real> 4 </real>
+									<string> "x_rot" </string>
+									<real> 0 </real>
+									<string> "y_rot" </string>
+									<real> 0 </real>
+									<string> "use_orthogonal" </string>
+									<bool> False </bool>
+									<string> "use_environment" </string>
+									<bool> False </bool>
+									<string> "pos" </string>
+									<vector3> 0, 0, 0 </vector3>
+								</dictionary>
+								<dictionary  shared="false">
+									<string> "distance" </string>
+									<real> 4 </real>
+									<string> "x_rot" </string>
+									<real> 0 </real>
+									<string> "y_rot" </string>
+									<real> 0 </real>
+									<string> "use_orthogonal" </string>
+									<bool> False </bool>
+									<string> "use_environment" </string>
+									<bool> False </bool>
+									<string> "pos" </string>
+									<vector3> 0, 0, 0 </vector3>
+								</dictionary>
+							</array>
+							<string> "viewport_mode" </string>
+							<int> 1 </int>
+							<string> "default_light" </string>
+							<bool> True </bool>
+							<string> "show_grid" </string>
+							<bool> True </bool>
+							<string> "show_origin" </string>
+							<bool> True </bool>
+							<string> "znear" </string>
+							<real> 0.1 </real>
+						</dictionary>
+					</dictionary>
+					<string> "__editor_run_settings__" </string>
+					<dictionary  shared="false">
+						<string> "custom_args" </string>
+						<string> "-l $scene" </string>
+						<string> "run_mode" </string>
+						<int> 0 </int>
+					</dictionary>
+					<string> "__editor_plugin_screen__" </string>
+					<string> "Script" </string>
+				</dictionary>
+				<vector2> 67.6875, 183.208 </vector2>
+				<resource  resource_type="ImageTexture" path="res://left_pallete.*">  </resource>
+				<bool> False </bool>
+				<int> 1 </int>
+				<int> 0 </int>
+				<color> 1, 1, 1, 1 </color>
+				<rect2> 0, 0, 0, 0 </rect2>
+				<vector2> 577, 187 </vector2>
+				<resource  resource_type="ImageTexture" path="res://right_pallete.*">  </resource>
+				<vector2> 320, 200 </vector2>
+				<resource  resource_type="ImageTexture" path="res://separator.*">  </resource>
+				<vector2> 320.283, 188 </vector2>
+				<resource  resource_type="ImageTexture" path="res://ball.*">  </resource>
+			</array>
+			<string> "nodes" </string>
+			<int_array  len="197"> 				-1, -1, 1, 0, -1, 9, 2, 0, 3, 1, 4, 1, 5, 0, 6, 2, 7, 3, 8, 4, 9, 5, 10, 6, 0, 0, 0, 12, 11, -1, 18, 2, 0, 3, 1, 4, 1, 5, 0, 6, 7, 7, 3, 8, 4, 13, 8, 14, 0, 15, 2, 16, 9, 17, 9, 18, 10, 19, 10, 20, 11, 21, 12, 22, 9, 23, 13, 0, 0, 0, 12, 24, -1, 18, 2, 0, 3, 1, 4, 1, 5, 0, 6, 14, 7, 3, 8, 4, 13, 15, 14, 0, 15, 2, 16, 9, 17, 9, 18, 10, 19, 10, 20, 11, 21, 12, 22, 9, 23, 13, 0, 0, 0, 12, 25, -1, 18, 2, 0, 3, 1, 4, 1, 5, 0, 6, 16, 7, 3, 8, 4, 13, 17, 14, 0, 15, 2, 16, 9, 17, 9, 18, 10, 19, 10, 20, 11, 21, 12, 22, 9, 23, 13, 0, 0, 0, 12, 26, -1, 18, 2, 0, 3, 1, 4, 1, 5, 0, 6, 18, 7, 3, 8, 4, 13, 19, 14, 0, 15, 2, 16, 9, 17, 9, 18, 10, 19, 10, 20, 11, 21, 12, 22, 9, 23, 13, 0 </int_array>
+			<string> "conns" </string>
+			<int_array  len="0"> 				 </int_array>
+		</dictionary>
+
+	</main_resource>
+</resource_file>

viewport/2d_in_3d/pong3d.gd

@@ -0,0 +1,14 @@
+
+extends Spatial
+
+# member variables here, example:
+# var a=2
+# var b="textvar"
+
+func _ready():
+	# Initalization here
+	var tex = get_node("Viewport").get_render_target_texture()
+	get_node("Quad").get_material_override().set_texture(FixedMaterial.PARAM_DIFFUSE,tex)
+	pass
+
+

viewport/3d_in_2d/engine.cfg

@@ -0,0 +1,4 @@
+[application]
+
+name="3D in 2D"
+main_scene="res://main.scn"

viewport/gui_in_3d/engine.cfg

@@ -0,0 +1,4 @@
+[application]
+
+name="GUI in 3D"
+main_scene="res://gui_3d.scn"

viewport/gui_in_3d/gui_3d.gd

@@ -0,0 +1,44 @@
+
+extends Spatial
+
+# member variables here, example:
+# var a=2
+# var b="textvar"
+
+var prev_pos=null
+
+func _input(ev):
+	if (ev.type in [InputEvent.MOUSE_BUTTON,InputEvent.MOUSE_MOTION]):
+		var pos = ev.pos
+		var rfrom = get_node("camera").project_ray_origin(pos)
+		var rnorm = get_node("camera").project_ray_normal(pos)
+		
+		#simple collision test against aligned plane
+		#for game UIs of this kind consider more complex collision against plane
+		var p = Plane(Vector3(0,0,1),0).intersects_ray(rfrom,rnorm)
+		if (p==null):
+			return
+			
+		pos.x=(p.x+1.5)*100
+		pos.y=(-p.y+0.75)*100
+		ev.pos=pos
+		ev.global_pos=pos
+		if (prev_pos==null):
+			prev_pos=pos
+		if (ev.type==InputEvent.MOUSE_MOTION):
+			ev.relative_pos=pos-prev_pos
+		prev_pos=pos
+		
+	get_node("viewport").input(ev)
+		
+		
+	
+
+func _ready():
+	# Initalization here
+	get_node("quad").get_material_override().set_texture(FixedMaterial.PARAM_DIFFUSE, get_node("viewport").get_render_target_texture() )
+	set_process_input(true)
+	
+	pass
+
+