-Added ViewportContainer, this is the only way to make viewports show up in GUI now

-2D editing now seems to work
-Added some functions and refactoring to Viewport

servers/visual/visual_server_viewport.h

@@ -13,6 +13,8 @@ public:
 
 	};
 
+
+
 	struct Viewport : public RID_Data {
 
 		RID self;
@@ -32,8 +34,8 @@ public:
 		bool hide_scenario;
 		bool hide_canvas;
 		bool disable_environment;
+		bool disable_3d;
 
-		Image capture;
 
 		VS::ViewportClearMode clear_mode;
 
@@ -70,8 +72,27 @@ public:
 	};
 
 	mutable RID_Owner<Viewport> viewport_owner;
+
+
+	struct ViewportSort {
+		_FORCE_INLINE_ bool operator()(const Viewport*p_left,const Viewport* p_right) const {
+
+			bool left_to_screen = p_left->viewport_to_screen_rect.size!=Size2();
+			bool right_to_screen = p_right->viewport_to_screen_rect.size!=Size2();
+
+			if (left_to_screen==right_to_screen) {
+
+				return p_left->parent==p_right->self;
+			} else {
+				return right_to_screen;
+			}
+		}
+	};
+
+
 	Vector<Viewport*> active_viewports;
 private:
+	Color clear_color;
 	void _draw_viewport(Viewport *p_viewport);
 public:
 
@@ -84,7 +105,7 @@ public:
 	void viewport_detach(RID p_viewport);
 
 	void viewport_set_active(RID p_viewport,bool p_active);
-
+	void viewport_set_parent_viewport(RID p_viewport,RID p_parent_viewport);
 	void viewport_set_update_mode(RID p_viewport,VS::ViewportUpdateMode p_mode);
 	void viewport_set_vflip(RID p_viewport,bool p_enable);
 
@@ -92,11 +113,11 @@ public:
 	void viewport_set_clear_mode(RID p_viewport,VS::ViewportClearMode p_clear_mode);
 
 	RID viewport_get_texture(RID p_viewport) const;
-	Image viewport_capture(RID p_viewport) const;
 
 	void viewport_set_hide_scenario(RID p_viewport,bool p_hide);
 	void viewport_set_hide_canvas(RID p_viewport,bool p_hide);
 	void viewport_set_disable_environment(RID p_viewport,bool p_disable);
+	void viewport_set_disable_3d(RID p_viewport,bool p_disable);
 
 	void viewport_attach_camera(RID p_viewport,RID p_camera);
 	void viewport_set_scenario(RID p_viewport,RID p_scenario);