Merge pull request #12092 from SaracenOne/request_frame_drawn_callback

Expose 'request_frame_drawn_callback' to script.

doc/classes/VisualServer.xml

@@ -24,6 +24,20 @@
 			<description>
 			</description>
 		</method>
+		<method name="request_frame_drawn_callback">
+			<return type="void">
+			</return>
+			<argument index="0" name="where" type="Object">
+			</argument>
+			<argument index="1" name="method" type="String">
+			</argument>
+			<argument index="2" name="userdata" type="Variant">
+			</argument>
+			<description>
+				Schedules a callback to the corresponding named 'method' on 'where' after a frame has been drawn.
+				The callback method must use only 1 argument which will be called with 'userdata'.
+			</description>
+		</method>
 		<method name="texture_create">
 			<return type="RID">
 			</return>

servers/visual_server.cpp

@@ -1447,6 +1447,7 @@ void VisualServer::_bind_methods() {
 
 	ClassDB::bind_method(D_METHOD("force_sync"), &VisualServer::sync);
 	ClassDB::bind_method(D_METHOD("force_draw"), &VisualServer::draw);
+	ClassDB::bind_method(D_METHOD("request_frame_drawn_callback", "where", "method", "userdata"), &VisualServer::request_frame_drawn_callback);
 	ClassDB::bind_method(D_METHOD("texture_create"), &VisualServer::texture_create);
 	ClassDB::bind_method(D_METHOD("texture_create_from_image", "image", "flags"), &VisualServer::texture_create_from_image, DEFVAL(TEXTURE_FLAGS_DEFAULT));
 	//ClassDB::bind_method(D_METHOD("texture_allocate"),&VisualServer::texture_allocate,DEFVAL( TEXTURE_FLAGS_DEFAULT ) );