6 files changed, 23 insertions, 0 deletions
diff --git a/servers/visual/rasterizer.h b/servers/visual/rasterizer.h
index 49dff0d557..90f2972ddf 100644
--- a/servers/visual/rasterizer.h
+++ b/servers/visual/rasterizer.h
@@ -836,6 +836,7 @@ public:
 		bool clip;
 		bool visible;
 		bool behind;
+		bool update_when_visible;
 		//VS::MaterialBlendMode blend_mode;
 		int light_mask;
 		Vector<Command *> commands;
@@ -1037,6 +1038,7 @@ public:
 			copy_back_buffer = NULL;
 			distance_field = false;
 			light_masked = false;
+			update_when_visible = false;
 		}
 		virtual ~Item() {
 			clear();
diff --git a/servers/visual/visual_server_canvas.cpp b/servers/visual/visual_server_canvas.cpp
index 0b4bbffddf..16cda0326d 100644
--- a/servers/visual/visual_server_canvas.cpp
+++ b/servers/visual/visual_server_canvas.cpp
@@ -30,6 +30,7 @@
 
 #include "visual_server_canvas.h"
 #include "visual_server_global.h"
+#include "visual_server_raster.h"
 #include "visual_server_viewport.h"
 
 void VisualServerCanvas::_render_canvas_item_tree(Item *p_canvas_item, const Transform2D &p_transform, const Rect2 &p_clip_rect, const Color &p_modulate, RasterizerCanvas::Light *p_lights) {
@@ -119,6 +120,10 @@ void VisualServerCanvas::_render_canvas_item(Item *p_canvas_item, const Transfor
 		ci->copy_back_buffer->screen_rect = xform.xform(ci->copy_back_buffer->rect).clip(p_clip_rect);
 	}
 
+	if (ci->update_when_visible) {
+		VisualServerRaster::redraw_request();
+	}
+
 	if ((!ci->commands.empty() && p_clip_rect.intersects(global_rect)) || ci->vp_render || ci->copy_back_buffer) {
 		//something to draw?
 		ci->final_transform = xform;
@@ -390,6 +395,14 @@ void VisualServerCanvas::canvas_item_set_draw_behind_parent(RID p_item, bool p_e
 	canvas_item->behind = p_enable;
 }
 
+void VisualServerCanvas::canvas_item_set_update_when_visible(RID p_item, bool p_update) {
+
+	Item *canvas_item = canvas_item_owner.getornull(p_item);
+	ERR_FAIL_COND(!canvas_item);
+
+	canvas_item->update_when_visible = p_update;
+}
+
 void VisualServerCanvas::canvas_item_add_line(RID p_item, const Point2 &p_from, const Point2 &p_to, const Color &p_color, float p_width, bool p_antialiased) {
 
 	Item *canvas_item = canvas_item_owner.getornull(p_item);
diff --git a/servers/visual/visual_server_canvas.h b/servers/visual/visual_server_canvas.h
index 4d9398a17e..966b51d341 100644
--- a/servers/visual/visual_server_canvas.h
+++ b/servers/visual/visual_server_canvas.h
@@ -171,6 +171,8 @@ public:
 
 	void canvas_item_set_draw_behind_parent(RID p_item, bool p_enable);
 
+	void canvas_item_set_update_when_visible(RID p_item, bool p_update);
+
 	void canvas_item_add_line(RID p_item, const Point2 &p_from, const Point2 &p_to, const Color &p_color, float p_width = 1.0, bool p_antialiased = false);
 	void canvas_item_add_polyline(RID p_item, const Vector<Point2> &p_points, const Vector<Color> &p_colors, float p_width = 1.0, bool p_antialiased = false);
 	void canvas_item_add_multiline(RID p_item, const Vector<Point2> &p_points, const Vector<Color> &p_colors, float p_width = 1.0, bool p_antialiased = false);
diff --git a/servers/visual/visual_server_raster.h b/servers/visual/visual_server_raster.h
index a00b364565..7960c5468b 100644
--- a/servers/visual/visual_server_raster.h
+++ b/servers/visual/visual_server_raster.h
@@ -574,6 +574,8 @@ public:
 	BIND2(canvas_item_set_visible, RID, bool)
 	BIND2(canvas_item_set_light_mask, RID, int)
 
+	BIND2(canvas_item_set_update_when_visible, RID, bool)
+
 	BIND2(canvas_item_set_transform, RID, const Transform2D &)
 	BIND2(canvas_item_set_clip, RID, bool)
 	BIND2(canvas_item_set_distance_field_mode, RID, bool)
diff --git a/servers/visual/visual_server_wrap_mt.h b/servers/visual/visual_server_wrap_mt.h
index 3a4d72c793..fcf9b08968 100644
--- a/servers/visual/visual_server_wrap_mt.h
+++ b/servers/visual/visual_server_wrap_mt.h
@@ -490,6 +490,8 @@ public:
 	FUNC2(canvas_item_set_visible, RID, bool)
 	FUNC2(canvas_item_set_light_mask, RID, int)
 
+	FUNC2(canvas_item_set_update_when_visible, RID, bool)
+
 	FUNC2(canvas_item_set_transform, RID, const Transform2D &)
 	FUNC2(canvas_item_set_clip, RID, bool)
 	FUNC2(canvas_item_set_distance_field_mode, RID, bool)
diff --git a/servers/visual_server.h b/servers/visual_server.h
index fd7f96339e..e74df1269a 100644
--- a/servers/visual_server.h
+++ b/servers/visual_server.h
@@ -863,6 +863,8 @@ public:
 	virtual void canvas_item_set_visible(RID p_item, bool p_visible) = 0;
 	virtual void canvas_item_set_light_mask(RID p_item, int p_mask) = 0;
 
+	virtual void canvas_item_set_update_when_visible(RID p_item, bool p_update) = 0;
+
 	virtual void canvas_item_set_transform(RID p_item, const Transform2D &p_transform) = 0;
 	virtual void canvas_item_set_clip(RID p_item, bool p_clip) = 0;
 	virtual void canvas_item_set_distance_field_mode(RID p_item, bool p_enable) = 0;