Merge pull request #29297 from Calinou/decrease-editor-fps-unfocused

Decrease the editor FPS cap when the window is unfocused

editor/editor_node.cpp

@@ -288,6 +288,7 @@ void EditorNode::_notification(int p_what) {
 
 		Engine::get_singleton()->set_editor_hint(true);
 
+		OS::get_singleton()->set_low_processor_usage_mode_sleep_usec(int(EDITOR_GET("interface/editor/low_processor_mode_sleep_usec")));
 		get_tree()->get_root()->set_usage(Viewport::USAGE_2D_NO_SAMPLING); //reduce memory usage
 		get_tree()->get_root()->set_disable_3d(true);
 		get_tree()->get_root()->set_as_audio_listener(false);
@@ -323,9 +324,18 @@ void EditorNode::_notification(int p_what) {
 
 	if (p_what == MainLoop::NOTIFICATION_WM_FOCUS_IN) {
 
+		// Restore the original FPS cap after focusing back on the editor
+		OS::get_singleton()->set_low_processor_usage_mode_sleep_usec(int(EDITOR_GET("interface/editor/low_processor_mode_sleep_usec")));
+
 		EditorFileSystem::get_singleton()->scan_changes();
 	}
 
+	if (p_what == MainLoop::NOTIFICATION_WM_FOCUS_OUT) {
+
+		// Set a low FPS cap to decrease CPU/GPU usage while the editor is unfocused
+		OS::get_singleton()->set_low_processor_usage_mode_sleep_usec(int(EDITOR_GET("interface/editor/unfocused_low_processor_mode_sleep_usec")));
+	}
+
 	if (p_what == MainLoop::NOTIFICATION_WM_QUIT_REQUEST) {
 
 		_menu_option_confirm(FILE_QUIT, false);

editor/editor_settings.cpp

@@ -340,6 +340,10 @@ void EditorSettings::_load_defaults(Ref<ConfigFile> p_extra_config) {
 	hints["interface/editor/dim_amount"] = PropertyInfo(Variant::REAL, "interface/editor/dim_amount", PROPERTY_HINT_RANGE, "0,1,0.01", PROPERTY_USAGE_DEFAULT);
 	_initial_set("interface/editor/dim_transition_time", 0.08f);
 	hints["interface/editor/dim_transition_time"] = PropertyInfo(Variant::REAL, "interface/editor/dim_transition_time", PROPERTY_HINT_RANGE, "0,1,0.001", PROPERTY_USAGE_DEFAULT);
+	_initial_set("interface/editor/low_processor_mode_sleep_usec", 6900); // ~144 FPS
+	hints["interface/editor/low_processor_mode_sleep_usec"] = PropertyInfo(Variant::REAL, "interface/editor/low_processor_mode_sleep_usec", PROPERTY_HINT_RANGE, "1,100000,1", PROPERTY_USAGE_DEFAULT);
+	_initial_set("interface/editor/unfocused_low_processor_mode_sleep_usec", 50000); // 20 FPS
+	hints["interface/editor/unfocused_low_processor_mode_sleep_usec"] = PropertyInfo(Variant::REAL, "interface/editor/unfocused_low_processor_mode_sleep_usec", PROPERTY_HINT_RANGE, "1,100000,1", PROPERTY_USAGE_DEFAULT);
 	_initial_set("interface/editor/separate_distraction_mode", false);
 	_initial_set("interface/editor/save_each_scene_on_quit", true); // Regression
 	_initial_set("interface/editor/quit_confirmation", true);