Add call_deferred() method to Callable

core/variant/callable.h

@@ -73,6 +73,16 @@ class Callable {
 	void call_deferredp(const Variant **p_arguments, int p_argcount) const;
 	Variant callv(const Array &p_arguments) const;
 
+	template <typename... VarArgs>
+	void call_deferred(VarArgs... p_args) const {
+		Variant args[sizeof...(p_args) + 1] = { p_args..., 0 }; // +1 makes sure zero sized arrays are also supported.
+		const Variant *argptrs[sizeof...(p_args) + 1];
+		for (uint32_t i = 0; i < sizeof...(p_args); i++) {
+			argptrs[i] = &args[i];
+		}
+		return call_deferredp(sizeof...(p_args) == 0 ? nullptr : (const Variant **)argptrs, sizeof...(p_args));
+	}
+
 	Error rpcp(int p_id, const Variant **p_arguments, int p_argcount, CallError &r_call_error) const;
 
 	_FORCE_INLINE_ bool is_null() const {

editor/editor_command_palette.cpp

@@ -226,7 +226,7 @@ void EditorCommandPalette::_add_command(String p_command_name, String p_key_name
 void EditorCommandPalette::execute_command(String &p_command_key) {
 	ERR_FAIL_COND_MSG(!commands.has(p_command_key), p_command_key + " not found.");
 	commands[p_command_key].last_used = OS::get_singleton()->get_unix_time();
-	commands[p_command_key].callable.call_deferredp(nullptr, 0);
+	commands[p_command_key].callable.call_deferred();
 	_save_history();
 }
 

editor/plugins/texture_region_editor_plugin.cpp

@@ -242,7 +242,7 @@ void TextureRegionEditor::_region_draw() {
 		hscroll->set_value((hscroll->get_min() + hscroll->get_max() - hscroll->get_page()) / 2);
 		vscroll->set_value((vscroll->get_min() + vscroll->get_max() - vscroll->get_page()) / 2);
 		// This ensures that the view is updated correctly.
-		callable_mp(this, &TextureRegionEditor::_pan_callback).bind(Vector2(1, 0)).call_deferredp(nullptr, 0);
+		callable_mp(this, &TextureRegionEditor::_pan_callback).bind(Vector2(1, 0)).call_deferred();
 		request_center = false;
 	}
 

scene/3d/collision_object_3d.cpp

@@ -330,7 +330,7 @@ bool CollisionObject3D::_are_collision_shapes_visible() {
 void CollisionObject3D::_update_shape_data(uint32_t p_owner) {
 	if (_are_collision_shapes_visible()) {
 		if (debug_shapes_to_update.is_empty()) {
-			callable_mp(this, &CollisionObject3D::_update_debug_shapes).call_deferredp({}, 0);
+			callable_mp(this, &CollisionObject3D::_update_debug_shapes).call_deferred();
 		}
 		debug_shapes_to_update.insert(p_owner);
 	}

scene/gui/option_button.cpp

@@ -451,7 +451,7 @@ void OptionButton::_queue_refresh_cache() {
 	}
 	cache_refresh_pending = true;
 
-	callable_mp(this, &OptionButton::_refresh_size_cache).call_deferredp(nullptr, 0);
+	callable_mp(this, &OptionButton::_refresh_size_cache).call_deferred();
 }
 
 void OptionButton::select(int p_idx) {

servers/display_server.cpp

@@ -302,19 +302,12 @@ void DisplayServer::tts_post_utterance_event(TTSUtteranceEvent p_event, int p_id
 		case DisplayServer::TTS_UTTERANCE_ENDED:
 		case DisplayServer::TTS_UTTERANCE_CANCELED: {
 			if (utterance_callback[p_event].is_valid()) {
-				Variant args[1];
-				args[0] = p_id;
-				const Variant *argp[] = { &args[0] };
-				utterance_callback[p_event].call_deferredp(argp, 1); // Should be deferred, on some platforms utterance events can be called from different threads in a rapid succession.
+				utterance_callback[p_event].call_deferred(p_id); // Should be deferred, on some platforms utterance events can be called from different threads in a rapid succession.
 			}
 		} break;
 		case DisplayServer::TTS_UTTERANCE_BOUNDARY: {
 			if (utterance_callback[p_event].is_valid()) {
-				Variant args[2];
-				args[0] = p_pos;
-				args[1] = p_id;
-				const Variant *argp[] = { &args[0], &args[1] };
-				utterance_callback[p_event].call_deferredp(argp, 2); // Should be deferred, on some platforms utterance events can be called from different threads in a rapid succession.
+				utterance_callback[p_event].call_deferred(p_pos, p_id); // Should be deferred, on some platforms utterance events can be called from different threads in a rapid succession.
 			}
 		} break;
 		default:

servers/rendering/renderer_canvas_cull.cpp

@@ -1964,7 +1964,7 @@ void RendererCanvasCull::update_visibility_notifiers() {
 
 			if (!visibility_notifier->enter_callable.is_null()) {
 				if (RSG::threaded) {
-					visibility_notifier->enter_callable.call_deferredp(nullptr, 0);
+					visibility_notifier->enter_callable.call_deferred();
 				} else {
 					Callable::CallError ce;
 					Variant ret;
@@ -1977,7 +1977,7 @@ void RendererCanvasCull::update_visibility_notifiers() {
 
 				if (!visibility_notifier->exit_callable.is_null()) {
 					if (RSG::threaded) {
-						visibility_notifier->exit_callable.call_deferredp(nullptr, 0);
+						visibility_notifier->exit_callable.call_deferred();
 					} else {
 						Callable::CallError ce;
 						Variant ret;

servers/rendering/renderer_rd/storage_rd/utilities.cpp

@@ -200,7 +200,7 @@ void Utilities::visibility_notifier_call(RID p_notifier, bool p_enter, bool p_de
 	if (p_enter) {
 		if (!vn->enter_callback.is_null()) {
 			if (p_deferred) {
-				vn->enter_callback.call_deferredp(nullptr, 0);
+				vn->enter_callback.call_deferred();
 			} else {
 				Variant r;
 				Callable::CallError ce;
@@ -210,7 +210,7 @@ void Utilities::visibility_notifier_call(RID p_notifier, bool p_enter, bool p_de
 	} else {
 		if (!vn->exit_callback.is_null()) {
 			if (p_deferred) {
-				vn->exit_callback.call_deferredp(nullptr, 0);
+				vn->exit_callback.call_deferred();
 			} else {
 				Variant r;
 				Callable::CallError ce;