build: bump version to 1.10-rc2

sway_root.outputs only include enabled outputs. We also need to re-init
the renderer for any disabled outputs, so use sway_root.all_outputs
instead.

Resolves the following heap-use-after-free accessing the render formats
when a disabled output is modeset after a GPU reset has occurred.

(cherry picked from commit c90cb37b2a)

.builds/alpine.yml

@@ -25,7 +25,7 @@ packages:
   - hwdata-dev
 sources:
   - https://github.com/swaywm/sway
-  - https://gitlab.freedesktop.org/wlroots/wlroots.git
+  - https://gitlab.freedesktop.org/wlroots/wlroots.git#0.18
 tasks:
   - wlroots: |
       cd wlroots

.builds/archlinux.yml

@@ -22,7 +22,7 @@ packages:
   - hwdata
 sources:
   - https://github.com/swaywm/sway
-  - https://gitlab.freedesktop.org/wlroots/wlroots.git
+  - https://gitlab.freedesktop.org/wlroots/wlroots.git#0.18
 tasks:
   - wlroots: |
       cd wlroots

.builds/freebsd.yml

@@ -27,11 +27,11 @@ packages:
 - x11/libX11
 - x11/pixman
 - x11/xcb-util-wm
-- x11-servers/xwayland-devel
+- x11-servers/xwayland
 - misc/hwdata
 sources:
 - https://github.com/swaywm/sway
-- https://gitlab.freedesktop.org/wlroots/wlroots.git
+- https://gitlab.freedesktop.org/wlroots/wlroots.git#0.18
 tasks:
 - setup: |
     cd sway

README.cs.md

@@ -1,6 +1,6 @@
 # sway
 
-[English][en] - **[Česky][cs]** - [Deutsch][de] - [Dansk][dk] - [Español][es] - [Français][fr] - [Svenska][sv] - [Ελληνικά][gr] - [हिन्दी][hi] - [Magyar][hu] - [فارسی][ir] - [Italiano][it] - [日本語][ja] - [한국어][ko] - [Nederlands][nl] - [Polski][pl] - [Português][pt] - [Română][ro] - [Русский][ru] - [Türkçe][tr] - [Українська][uk] - [中文-简体][zh-CN] - [中文-繁體][zh-TW]
+[English][en] - [عربي][ar] - **[Česky][cs]** - [Deutsch][de] - [Dansk][dk] - [Español][es] - [Français][fr] - [ქართული][ge] - [Ελληνικά][gr] - [हिन्दी][hi] - [Magyar][hu] - [فارسی][ir] - [Italiano][it] - [日本語][ja] - [한국어][ko] - [Nederlands][nl] - [Norsk][no] - [Polski][pl] - [Português][pt] - [Română][ro] - [Русский][ru] - [Svenska][sv] - [Türkçe][tr] - [Українська][uk] - [中文-简体][zh-CN] - [中文-繁體][zh-TW]
 
 sway je s [i3] kompatibilní [Wayland] kompozitor. Přečtěte si [FAQ]. Připojte se na
 [IRC kanál][IRC channel] \(#sway na irc.libera.chat).
@@ -32,10 +32,11 @@ Nainstalujte závislosti:
 * pango
 * cairo
 * gdk-pixbuf2 (volitelné: oznamovací oblast)
+* [swaybg] (volitelné: tapeta)
 * [scdoc] (volitelné: manuálové stránky) \*
 * git (volitelné: informace o verzi) \*
 
-_\* Závislost pouze pro sestavení_
+_\* Závislost pouze pro kompilaci_
 
 Spusťte tyto příkazy:
 
@@ -56,12 +57,13 @@ Spusťte `sway` z TTY. Některé správce zobrazení mohou fungovat, ale nejsou
 podporovány sway (je známo, že gdm funguje docela dobře).
 
 [en]: https://github.com/swaywm/sway#readme
+[ar]: README.ar.md
 [cs]: README.cs.md
 [de]: README.de.md
 [dk]: README.dk.md
 [es]: README.es.md
 [fr]: README.fr.md
-[sv]: README.sv.md
+[ge]: README.ge.md
 [gr]: README.gr.md
 [hi]: README.hi.md
 [hu]: README.hu.md
@@ -70,10 +72,12 @@ podporovány sway (je známo, že gdm funguje docela dobře).
 [ja]: README.ja.md
 [ko]: README.ko.md
 [nl]: README.nl.md
+[no]: README.no.md
 [pl]: README.pl.md
 [pt]: README.pt.md
 [ro]: README.ro.md
 [ru]: README.ru.md
+[sv]: README.sv.md
 [tr]: README.tr.md
 [uk]: README.uk.md
 [zh-CN]: README.zh-CN.md
@@ -86,4 +90,5 @@ podporovány sway (je známo, že gdm funguje docela dobře).
 [GitHub releases]: https://github.com/swaywm/sway/releases
 [Development setup]: https://github.com/swaywm/sway/wiki/Development-Setup
 [wlroots]: https://gitlab.freedesktop.org/wlroots/wlroots
+[swaybg]: https://github.com/swaywm/swaybg/
 [scdoc]: https://git.sr.ht/~sircmpwn/scdoc

config.in

@@ -16,9 +16,7 @@ set $right l
 # Your preferred terminal emulator
 set $term foot
 # Your preferred application launcher
-# Note: pass the final command to swaymsg so that the resulting window can be opened
-# on the original workspace that the command was run on.
-set $menu dmenu_path | wmenu | xargs swaymsg exec --
+set $menu wmenu-run
 
 ### Output configuration
 #
@@ -195,6 +193,19 @@ mode "resize" {
     bindsym Escape mode "default"
 }
 bindsym $mod+r mode "resize"
+#
+# Utilities:
+#
+    # Special keys to adjust volume via PulseAudio
+    bindsym --locked XF86AudioMute exec pactl set-sink-mute \@DEFAULT_SINK@ toggle
+    bindsym --locked XF86AudioLowerVolume exec pactl set-sink-volume \@DEFAULT_SINK@ -5%
+    bindsym --locked XF86AudioRaiseVolume exec pactl set-sink-volume \@DEFAULT_SINK@ +5%
+    bindsym --locked XF86AudioMicMute exec pactl set-source-mute \@DEFAULT_SOURCE@ toggle
+    # Special keys to adjust brightness via brightnessctl
+    bindsym --locked XF86MonBrightnessDown exec brightnessctl set 5%-
+    bindsym --locked XF86MonBrightnessUp exec brightnessctl set 5%+
+    # Special key to take a screenshot with grim
+    bindsym Print exec grim
 
 #
 # Status Bar:

include/sway/commands.h

@@ -104,6 +104,7 @@ struct sway_container *container_find_resize_parent(struct sway_container *con,
 sway_cmd cmd_exec_validate;
 sway_cmd cmd_exec_process;
 
+sway_cmd cmd_allow_tearing;
 sway_cmd cmd_assign;
 sway_cmd cmd_bar;
 sway_cmd cmd_bindcode;
@@ -283,6 +284,7 @@ sway_cmd input_cmd_xkb_switch_layout;
 sway_cmd input_cmd_xkb_variant;
 
 sway_cmd output_cmd_adaptive_sync;
+sway_cmd output_cmd_allow_tearing;
 sway_cmd output_cmd_background;
 sway_cmd output_cmd_color_profile;
 sway_cmd output_cmd_disable;

include/sway/config.h

@@ -262,6 +262,7 @@ enum scale_filter_mode {
 
 enum render_bit_depth {
 	RENDER_BIT_DEPTH_DEFAULT, // the default is currently 8
+	RENDER_BIT_DEPTH_6,
 	RENDER_BIT_DEPTH_8,
 	RENDER_BIT_DEPTH_10,
 };
@@ -289,20 +290,13 @@ struct output_config {
 	enum render_bit_depth render_bit_depth;
 	bool set_color_transform;
 	struct wlr_color_transform *color_transform;
+	int allow_tearing;
 
 	char *background;
 	char *background_option;
 	char *background_fallback;
 };
 
-/**
- * An output config pre-matched to an output
- */
-struct matched_output_config {
-	struct sway_output *output;
-	struct output_config *config;
-};
-
 /**
  * Stores size of gaps for each side
  */
@@ -692,13 +686,10 @@ const char *sway_output_scale_filter_to_string(enum scale_filter_mode scale_filt
 
 struct output_config *new_output_config(const char *name);
 
-bool apply_output_configs(struct matched_output_config *configs,
-		size_t configs_len, bool test_only, bool degrade_to_off);
+bool apply_output_configs(struct output_config **ocs, size_t ocs_len,
+		bool test_only, bool degrade_to_off);
 
-void apply_all_output_configs(void);
-
-void sort_output_configs_by_priority(struct matched_output_config *configs,
-		size_t configs_len);
+void apply_stored_output_configs(void);
 
 /**
  * store_output_config stores a new output config. An output may be matched by
@@ -713,6 +704,8 @@ struct output_config *find_output_config(struct sway_output *output);
 
 void free_output_config(struct output_config *oc);
 
+void request_modeset(void);
+
 bool spawn_swaybg(void);
 
 int workspace_output_cmp_workspace(const void *a, const void *b);

include/sway/input/text_input_popup.h

@@ -9,11 +9,14 @@ struct sway_input_popup {
 	struct wlr_scene_tree *scene_tree;
 	struct sway_popup_desc desc;
 	struct wlr_input_popup_surface_v2 *popup_surface;
+	struct wlr_output *fixed_output;
 
 	struct wl_list link;
 
 	struct wl_listener popup_destroy;
 	struct wl_listener popup_surface_commit;
+	struct wl_listener popup_surface_map;
+	struct wl_listener popup_surface_unmap;
 
 	struct wl_listener focused_surface_unmap;
 };

include/sway/lock.h

@@ -0,0 +1,6 @@
+#ifndef _SWAY_LOCK_H
+#define _SWAY_LOCK_H
+
+void arrange_locks(void);
+
+#endif

include/sway/output.h

@@ -73,6 +73,7 @@ struct sway_output {
 	int max_render_time; // In milliseconds
 	struct wl_event_source *repaint_timer;
 	bool gamma_lut_changed;
+	bool allow_tearing;
 };
 
 struct sway_output_non_desktop {
@@ -135,7 +136,6 @@ enum sway_container_layout output_get_default_layout(
 
 enum wlr_direction opposite_direction(enum wlr_direction d);
 
-void handle_output_layout_change(struct wl_listener *listener, void *data);
 
 void handle_gamma_control_set_gamma(struct wl_listener *listener, void *data);
 
@@ -148,4 +148,6 @@ void handle_output_power_manager_set_mode(struct wl_listener *listener,
 
 struct sway_output_non_desktop *output_non_desktop_create(struct wlr_output *wlr_output);
 
+void update_output_manager_config(struct sway_server *server);
+
 #endif

include/sway/server.h

@@ -45,7 +45,6 @@ struct sway_server {
 	struct sway_input_manager *input;
 
 	struct wl_listener new_output;
-	struct wl_listener output_layout_change;
 	struct wl_listener renderer_lost;
 
 	struct wlr_idle_notifier_v1 *idle_notifier_v1;
@@ -115,6 +114,10 @@ struct sway_server {
 	struct wl_listener xdg_activation_v1_new_token;
 
 	struct wl_listener request_set_cursor_shape;
+	
+	struct wlr_tearing_control_manager_v1 *tearing_control_v1;
+	struct wl_listener tearing_control_new_object;
+	struct wl_list tearing_controllers; // sway_tearing_controller::link
 
 	struct wl_list pending_launcher_ctxs; // launcher_ctx::link
 
@@ -182,4 +185,6 @@ void xdg_activation_v1_handle_new_token(struct wl_listener *listener,
 
 void set_rr_scheduling(void);
 
+void handle_new_tearing_hint(struct wl_listener *listener, void *data);
+
 #endif

include/sway/tree/container.h

@@ -102,6 +102,8 @@ struct sway_container {
 	char *title;           // The view's title (unformatted)
 	char *formatted_title; // The title displayed in the title bar
 	int title_width;
+	
+	char *title_format;
 
 	enum sway_container_layout prev_split_layout;
 
@@ -183,6 +185,8 @@ void container_update_title_bar(struct sway_container *container);
 
 void container_update_marks(struct sway_container *container);
 
+size_t parse_title_format(struct sway_container *container, char *buffer);
+
 size_t container_build_representation(enum sway_container_layout layout,
 		list_t *children, char *buffer);
 

include/sway/tree/root.h

@@ -16,8 +16,6 @@ struct sway_root {
 	struct sway_node node;
 	struct wlr_output_layout *output_layout;
 
-	struct wl_listener output_layout_change;
-
 	// scene node layout:
 	// - root
 	// 	- staging

include/sway/tree/view.h

@@ -4,6 +4,7 @@
 #include <wlr/config.h>
 #include <wlr/types/wlr_compositor.h>
 #include <wlr/types/wlr_scene.h>
+#include <wlr/types/wlr_tearing_control_v1.h>
 #include "sway/config.h"
 #if WLR_HAS_XWAYLAND
 #include <wlr/xwayland.h>
@@ -34,6 +35,12 @@ enum sway_view_prop {
 #endif
 };
 
+enum sway_view_tearing_mode {
+	TEARING_OVERRIDE_FALSE,
+	TEARING_OVERRIDE_TRUE,
+	TEARING_WINDOW_HINT,
+};
+
 struct sway_view_impl {
 	void (*get_constraints)(struct sway_view *view, double *min_width,
 			double *max_width, double *min_height, double *max_height);
@@ -73,8 +80,6 @@ struct sway_view {
 	// Used when changing a view from tiled to floating.
 	int natural_width, natural_height;
 
-	char *title_format;
-
 	bool using_csd;
 
 	struct timespec urgent;
@@ -111,6 +116,9 @@ struct sway_view {
 	int max_render_time; // In milliseconds
 
 	enum seat_config_shortcuts_inhibit shortcuts_inhibit;
+
+	enum sway_view_tearing_mode tearing_mode;
+	enum wp_tearing_control_v1_presentation_hint tearing_hint;
 };
 
 struct sway_xdg_shell_view {
@@ -335,4 +343,6 @@ void view_assign_ctx(struct sway_view *view, struct launcher_ctx *ctx);
 
 void view_send_frame_done(struct sway_view *view);
 
+bool view_can_tear(struct sway_view *view);
+
 #endif

meson.build

@@ -1,7 +1,7 @@
 project(
 	'sway',
 	'c',
-	version: '1.10-dev',
+	version: '1.10-rc2',
 	license: 'MIT',
 	meson_version: '>=0.60.0',
 	default_options: [
@@ -160,8 +160,8 @@ add_project_arguments('-DSYSCONFDIR="/@0@"'.format(join_paths(prefix, sysconfdir
 version = '"@0@"'.format(meson.project_version())
 git = find_program('git', native: true, required: false)
 if git.found()
-	git_commit = run_command([git, 'rev-parse', '--short', 'HEAD'], check: false)
-	git_branch = run_command([git, 'rev-parse', '--abbrev-ref', 'HEAD'], check: false)
+	git_commit = run_command([git, '--git-dir=.git', 'rev-parse', '--short', 'HEAD'], check: false)
+	git_branch = run_command([git, '--git-dir=.git', 'rev-parse', '--abbrev-ref', 'HEAD'], check: false)
 	if git_commit.returncode() == 0 and git_branch.returncode() == 0
 		version = '"@0@-@1@ (" __DATE__ ", branch \'@2@\')"'.format(
 			meson.project_version(),

protocols/meson.build

@@ -14,6 +14,7 @@ protocols = [
 	wl_protocol_dir / 'unstable/linux-dmabuf/linux-dmabuf-unstable-v1.xml',
 	wl_protocol_dir / 'staging/content-type/content-type-v1.xml',
 	wl_protocol_dir / 'staging/cursor-shape/cursor-shape-v1.xml',
+	wl_protocol_dir / 'staging/tearing-control/tearing-control-v1.xml',
 	'wlr-layer-shell-unstable-v1.xml',
 	'idle.xml',
 	'wlr-output-power-management-unstable-v1.xml',

release.sh

@@ -28,4 +28,5 @@ archive=$prefix.tar.gz
 git archive --prefix="$prefix/" -o "$archive" "$next"
 gpg --output "$archive".sig --detach-sig "$archive"
 
+git push --follow-tags
 gh release create "sway $next" -t "$next" -n "" -d "$archive" "$archive.sig"

sway/commands.c

@@ -112,6 +112,7 @@ static const struct cmd_handler config_handlers[] = {
 
 /* Runtime-only commands. Keep alphabetized */
 static const struct cmd_handler command_handlers[] = {
+	{ "allow_tearing", cmd_allow_tearing },
 	{ "border", cmd_border },
 	{ "create_output", cmd_create_output },
 	{ "exit", cmd_exit },

sway/commands/allow_tearing.c

@@ -0,0 +1,24 @@
+#include <sway/commands.h>
+#include "sway/config.h"
+#include "sway/tree/view.h"
+#include "util.h"
+
+struct cmd_results *cmd_allow_tearing(int argc, char **argv) {
+	struct cmd_results *error = NULL;
+	if ((error = checkarg(argc, "allow_tearing", EXPECTED_AT_LEAST, 1))) {
+		return error;
+	}
+
+	struct sway_container *container = config->handler_context.container;
+	if (!container || !container->view) {
+		return cmd_results_new(CMD_INVALID, "Tearing can only be allowed on views");
+	}
+
+	bool wants_tearing = parse_boolean(argv[0], true);
+
+	struct sway_view *view = container->view;
+	view->tearing_mode = wants_tearing ? TEARING_OVERRIDE_TRUE :
+		TEARING_OVERRIDE_FALSE;
+
+	return cmd_results_new(CMD_SUCCESS, NULL);
+}

sway/commands/gaps.c

@@ -215,15 +215,13 @@ struct cmd_results *cmd_gaps(int argc, char **argv) {
 		return error;
 	}
 
-	bool config_loading = !config->active || config->reloading;
-
 	if (argc == 2) {
 		return gaps_set_defaults(argc, argv);
 	}
-	if (argc == 4 && !config_loading) {
+	if (argc == 4 && !config->reading) {
 		return gaps_set_runtime(argc, argv);
 	}
-	if (config_loading) {
+	if (config->reading) {
 		return cmd_results_new(CMD_INVALID, "Expected %s", expected_defaults);
 	}
 	return cmd_results_new(CMD_INVALID, "Expected %s or %s",

sway/commands/input.c

@@ -94,7 +94,7 @@ struct cmd_results *cmd_input(int argc, char **argv) {
 			return res;
 		}
 
-		if (!config->reloading) {
+		if (!config->reading) {
 			input_manager_apply_input_config(ic);
 		}
 	} else {

sway/commands/input/xkb_switch_layout.c

@@ -95,10 +95,18 @@ struct cmd_results *input_cmd_xkb_switch_layout(int argc, char **argv) {
 			continue;
 		}
 
+		struct wlr_keyboard *keyboard =
+			wlr_keyboard_from_input_device(dev->wlr_device);
+		if (keyboard->keymap == NULL && dev->is_virtual) {
+			// The `sway_keyboard_set_layout` function is by default skipped
+			// when configuring virtual keyboards.
+			continue;
+		}
+
 		struct xkb_switch_layout_action *action =
 			&actions[actions_len++];
+		action->keyboard = keyboard;
 
-		action->keyboard = wlr_keyboard_from_input_device(dev->wlr_device);
 		if (relative) {
 			action->layout = get_layout_relative(action->keyboard, relative);
 		} else {

sway/commands/move.c

@@ -240,7 +240,6 @@ static void container_move_to_workspace(struct sway_container *container,
 static void container_move_to_container(struct sway_container *container,
 		struct sway_container *destination) {
 	if (container == destination
-			|| container_has_ancestor(container, destination)
 			|| container_has_ancestor(destination, container)) {
 		return;
 	}
@@ -510,6 +509,7 @@ static struct cmd_results *cmd_move_container(bool no_auto_back_and_forth,
 				}
 			}
 			ws = workspace_create(NULL, ws_name);
+			arrange_workspace(ws);
 		}
 		free(ws_name);
 		struct sway_container *dst = seat_get_focus_inactive_tiling(seat, ws);

sway/commands/output.c

@@ -8,6 +8,7 @@
 // must be in order for the bsearch
 static const struct cmd_handler output_handlers[] = {
 	{ "adaptive_sync", output_cmd_adaptive_sync },
+	{ "allow_tearing", output_cmd_allow_tearing },
 	{ "background", output_cmd_background },
 	{ "bg", output_cmd_background },
 	{ "color_profile", output_cmd_color_profile },
@@ -106,17 +107,16 @@ struct cmd_results *cmd_output(int argc, char **argv) {
 
 	store_output_config(output);
 
-	// If reloading, the output configs will be applied after reading the
-	// entire config and before the deferred commands so that an auto generated
-	// workspace name is not given to re-enabled outputs.
-	if (!config->reloading && !config->validating) {
-		apply_all_output_configs();
-		if (background) {
-			if (!spawn_swaybg()) {
-				return cmd_results_new(CMD_FAILURE,
-					"Failed to apply background configuration");
-			}
-		}
+	if (config->reading) {
+		// When reading the config file, we wait till the end to do a single
+		// modeset and swaybg spawn.
+		return cmd_results_new(CMD_SUCCESS, NULL);
+	}
+	request_modeset();
+
+	if (background && !spawn_swaybg()) {
+		return cmd_results_new(CMD_FAILURE,
+			"Failed to apply background configuration");
 	}
 
 	return cmd_results_new(CMD_SUCCESS, NULL);

sway/commands/output/adaptive_sync.c

@@ -1,5 +1,7 @@
+#include <strings.h>
 #include "sway/commands.h"
 #include "sway/config.h"
+#include "sway/output.h"
 #include "util.h"
 
 struct cmd_results *output_cmd_adaptive_sync(int argc, char **argv) {
@@ -10,12 +12,26 @@ struct cmd_results *output_cmd_adaptive_sync(int argc, char **argv) {
 		return cmd_results_new(CMD_INVALID, "Missing adaptive_sync argument");
 	}
 
-	if (parse_boolean(argv[0], true)) {
-		config->handler_context.output_config->adaptive_sync = 1;
-	} else {
-		config->handler_context.output_config->adaptive_sync = 0;
+	bool current_value = true;
+	if (strcasecmp(argv[0], "toggle") == 0) {
+		const char *oc_name = config->handler_context.output_config->name;
+		if (strcmp(oc_name, "*") == 0) {
+			return cmd_results_new(CMD_INVALID,
+				"Cannot apply toggle to all outputs");
+		}
+
+		struct sway_output *sway_output = all_output_by_name_or_id(oc_name);
+		if (!sway_output || !sway_output->wlr_output) {
+			return cmd_results_new(CMD_FAILURE,
+				"Cannot apply toggle to unknown output %s", oc_name);
+		}
+
+		current_value =
+			sway_output->wlr_output->adaptive_sync_status == WLR_OUTPUT_ADAPTIVE_SYNC_ENABLED;
 	}
 
+	config->handler_context.output_config->adaptive_sync = parse_boolean(argv[0], current_value);
+
 	config->handler_context.leftovers.argc = argc - 1;
 	config->handler_context.leftovers.argv = argv + 1;
 	return NULL;

sway/commands/output/allow_tearing.c

@@ -0,0 +1,23 @@
+#include "sway/commands.h"
+#include "sway/config.h"
+#include "util.h"
+
+struct cmd_results *output_cmd_allow_tearing(int argc, char **argv) {
+	if (!config->handler_context.output_config) {
+		return cmd_results_new(CMD_FAILURE, "Missing output config");
+	}
+	if (argc == 0) {
+		return cmd_results_new(CMD_INVALID, "Missing allow_tearing argument");
+	}
+
+	if (parse_boolean(argv[0],
+			(config->handler_context.output_config->allow_tearing == 1))) {
+		config->handler_context.output_config->allow_tearing = 1;
+	} else {
+		config->handler_context.output_config->allow_tearing = 0;
+	}
+
+	config->handler_context.leftovers.argc = argc - 1;
+	config->handler_context.leftovers.argv = argv + 1;
+	return NULL;
+}

sway/commands/output/color_profile.c

@@ -5,6 +5,7 @@
 #include <wlr/render/color.h>
 #include "sway/commands.h"
 #include "sway/config.h"
+#include "stringop.h"
 
 static bool read_file_into_buf(const char *path, void **buf, size_t *size) {
 	/* Why not use fopen/fread directly? glibc will succesfully open directories,
@@ -70,12 +71,23 @@ struct cmd_results *output_cmd_color_profile(int argc, char **argv) {
 			return cmd_results_new(CMD_INVALID,
 				"Invalid color profile specification: icc type requires a file");
 		}
+
+		char *icc_path = strdup(argv[1]);
+		if (!expand_path(&icc_path)) {
+			struct cmd_results *cmd_res = cmd_results_new(CMD_INVALID,
+				"Invalid color profile specification: invalid file path");
+			free(icc_path);
+			return cmd_res;
+		}
+
 		void *data = NULL;
 		size_t size = 0;
-		if (!read_file_into_buf(argv[1], &data, &size)) {
+		if (!read_file_into_buf(icc_path, &data, &size)) {
+			free(icc_path);
 			return cmd_results_new(CMD_FAILURE,
 				"Failed to load color profile: could not read ICC file");
 		}
+		free(icc_path);
 
 		struct wlr_color_transform *tmp =
 			wlr_color_transform_init_linear_to_icc(data, size);

sway/commands/output/render_bit_depth.c

@@ -11,7 +11,10 @@ struct cmd_results *output_cmd_render_bit_depth(int argc, char **argv) {
 		return cmd_results_new(CMD_INVALID, "Missing bit depth argument.");
 	}
 
-	if (strcmp(*argv, "8") == 0) {
+	if (strcmp(*argv, "6") == 0) {
+		config->handler_context.output_config->render_bit_depth =
+			RENDER_BIT_DEPTH_6;
+	} else if (strcmp(*argv, "8") == 0) {
 		config->handler_context.output_config->render_bit_depth =
 			RENDER_BIT_DEPTH_8;
 	} else if (strcmp(*argv, "10") == 0) {
@@ -19,7 +22,7 @@ struct cmd_results *output_cmd_render_bit_depth(int argc, char **argv) {
 			RENDER_BIT_DEPTH_10;
 	} else {
 		return cmd_results_new(CMD_INVALID,
-			"Invalid bit depth. Must be a value in (8|10).");
+			"Invalid bit depth. Must be a value in (6|8|10).");
 	}
 
 	config->handler_context.leftovers.argc = argc - 1;

sway/commands/title_format.c

@@ -1,3 +1,4 @@
+#define _POSIX_C_SOURCE 200809L
 #include <string.h>
 #include "sway/commands.h"
 #include "sway/config.h"
@@ -11,16 +12,19 @@ struct cmd_results *cmd_title_format(int argc, char **argv) {
 		return error;
 	}
 	struct sway_container *container = config->handler_context.container;
-	if (!container || !container->view) {
+	if (!container) {
 		return cmd_results_new(CMD_INVALID,
-				"Only views can have a title_format");
+						 "Only valid containers can have a title_format");
 	}
-	struct sway_view *view = container->view;
 	char *format = join_args(argv, argc);
-	if (view->title_format) {
-		free(view->title_format);
+	if (container->title_format) {
+		free(container->title_format);
+	}
+	container->title_format = format;
+	if (container->view) {
+		view_update_title(container->view, true);
+	} else {
+		container_update_representation(container);
 	}
-	view->title_format = format;
-	view_update_title(view, true);
 	return cmd_results_new(CMD_SUCCESS, NULL);
 }

sway/config.c

@@ -516,7 +516,7 @@ bool load_main_config(const char *file, bool is_active, bool validating) {
 	// Only really necessary if not explicitly `font` is set in the config.
 	config_update_font_height();
 
-	if (is_active && !validating) {
+	if (!validating) {
 		input_manager_verify_fallback_seat();
 
 		for (int i = 0; i < config->input_configs->length; i++) {
@@ -533,12 +533,14 @@ bool load_main_config(const char *file, bool is_active, bool validating) {
 		}
 		sway_switch_retrigger_bindings_for_all();
 
-		apply_all_output_configs();
 		spawn_swaybg();
 
 		config->reloading = false;
-		if (config->swaynag_config_errors.client != NULL) {
-			swaynag_show(&config->swaynag_config_errors);
+		if (is_active) {
+			request_modeset();
+			if (config->swaynag_config_errors.client != NULL) {
+				swaynag_show(&config->swaynag_config_errors);
+			}
 		}
 	}
 

sway/config/output.c

@@ -10,10 +10,15 @@
 #include <wlr/types/wlr_output_layout.h>
 #include <wlr/types/wlr_output.h>
 #include <wlr/types/wlr_output_swapchain_manager.h>
+#include <xf86drm.h>
 #include "sway/config.h"
+#include "sway/desktop/transaction.h"
 #include "sway/input/cursor.h"
+#include "sway/layers.h"
+#include "sway/lock.h"
 #include "sway/output.h"
 #include "sway/server.h"
+#include "sway/tree/arrange.h"
 #include "sway/tree/root.h"
 #include "log.h"
 #include "util.h"
@@ -22,13 +27,6 @@
 #include <wlr/backend/drm.h>
 #endif
 
-int output_name_cmp(const void *item, const void *data) {
-	const struct output_config *output = item;
-	const char *name = data;
-
-	return strcmp(output->name, name);
-}
-
 void output_get_identifier(char *identifier, size_t len,
 		struct sway_output *output) {
 	struct wlr_output *wlr_output = output->wlr_output;
@@ -79,6 +77,7 @@ struct output_config *new_output_config(const char *name) {
 	oc->set_color_transform = false;
 	oc->color_transform = NULL;
 	oc->power = -1;
+	oc->allow_tearing = -1;
 	return oc;
 }
 
@@ -216,6 +215,9 @@ static void merge_output_config(struct output_config *dst, struct output_config
 	if (src->power != -1) {
 		dst->power = src->power;
 	}
+	if (src->allow_tearing != -1) {
+		dst->allow_tearing = src->allow_tearing;
+	}
 }
 
 void store_output_config(struct output_config *oc) {
@@ -258,11 +260,11 @@ void store_output_config(struct output_config *oc) {
 
 	sway_log(SWAY_DEBUG, "Config stored for output %s (enabled: %d) (%dx%d@%fHz "
 		"position %d,%d scale %f subpixel %s transform %d) (bg %s %s) (power %d) "
-		"(max render time: %d)",
+		"(max render time: %d) (allow tearing: %d)",
 		oc->name, oc->enabled, oc->width, oc->height, oc->refresh_rate,
 		oc->x, oc->y, oc->scale, sway_wl_output_subpixel_to_string(oc->subpixel),
 		oc->transform, oc->background, oc->background_option, oc->power,
-		oc->max_render_time);
+		oc->max_render_time, oc->allow_tearing);
 
 	// If the configuration was not merged into an existing configuration, add
 	// it to the list. Otherwise we're done with it and can free it.
@@ -397,9 +399,15 @@ static int compute_default_scale(struct wlr_output *output,
 	return 2;
 }
 
-static bool render_format_is_10bit(uint32_t render_format) {
-	return render_format == DRM_FORMAT_XRGB2101010 ||
-		render_format == DRM_FORMAT_XBGR2101010;
+static enum render_bit_depth bit_depth_from_format(uint32_t render_format) {
+	if (render_format == DRM_FORMAT_XRGB2101010 || render_format == DRM_FORMAT_XBGR2101010) {
+		return RENDER_BIT_DEPTH_10;
+	} else if (render_format == DRM_FORMAT_XRGB8888 || render_format == DRM_FORMAT_ARGB8888) {
+		return RENDER_BIT_DEPTH_8;
+	} else if (render_format == DRM_FORMAT_RGB565) {
+		return RENDER_BIT_DEPTH_6;
+	}
+	return RENDER_BIT_DEPTH_DEFAULT;
 }
 
 static bool render_format_is_bgr(uint32_t fmt) {
@@ -487,7 +495,7 @@ static void queue_output_config(struct output_config *oc,
 		wlr_output_state_set_scale(pending, scale);
 	}
 
-	if (oc && oc->adaptive_sync != -1) {
+	if (oc && oc->adaptive_sync != -1 && wlr_output->adaptive_sync_supported) {
 		sway_log(SWAY_DEBUG, "Set %s adaptive sync to %d", wlr_output->name,
 			oc->adaptive_sync);
 		wlr_output_state_set_adaptive_sync_enabled(pending, oc->adaptive_sync == 1);
@@ -495,11 +503,13 @@ static void queue_output_config(struct output_config *oc,
 
 	if (oc && oc->render_bit_depth != RENDER_BIT_DEPTH_DEFAULT) {
 		if (oc->render_bit_depth == RENDER_BIT_DEPTH_10 &&
-			render_format_is_10bit(output->wlr_output->render_format)) {
+			bit_depth_from_format(output->wlr_output->render_format) == oc->render_bit_depth) {
 			// 10-bit was set successfully before, try to save some tests by reusing the format
 			wlr_output_state_set_render_format(pending, output->wlr_output->render_format);
 		} else if (oc->render_bit_depth == RENDER_BIT_DEPTH_10) {
 			wlr_output_state_set_render_format(pending, DRM_FORMAT_XRGB2101010);
+		} else if (oc->render_bit_depth == RENDER_BIT_DEPTH_6){
+			wlr_output_state_set_render_format(pending, DRM_FORMAT_RGB565);
 		} else {
 			wlr_output_state_set_render_format(pending, DRM_FORMAT_XRGB8888);
 		}
@@ -574,74 +584,65 @@ static bool finalize_output_config(struct output_config *oc, struct sway_output
 		wlr_color_transform_unref(output->color_transform);
 		output->color_transform = oc->color_transform;
 	}
+
+	if (oc && oc->allow_tearing >= 0) {
+		sway_log(SWAY_DEBUG, "Set %s allow tearing to %d",
+			oc->name, oc->allow_tearing);
+		output->allow_tearing = oc->allow_tearing;
+	}
+
 	return true;
 }
 
-static void default_output_config(struct output_config *oc,
-		struct wlr_output *wlr_output) {
-	oc->enabled = 1;
-	oc->power = 1;
-	struct wlr_output_mode *mode = wlr_output_preferred_mode(wlr_output);
-	if (mode != NULL) {
-		oc->width = mode->width;
-		oc->height = mode->height;
-		oc->refresh_rate = mode->refresh / 1000.f;
-	}
-	oc->x = oc->y = -1;
-	oc->scale = 0; // auto
-	oc->scale_filter = SCALE_FILTER_DEFAULT;
-	struct sway_output *output = wlr_output->data;
-	oc->subpixel = output->detected_subpixel;
-	oc->transform = WL_OUTPUT_TRANSFORM_NORMAL;
-	oc->max_render_time = 0;
-}
-
-// find_output_config returns a merged output_config containing all stored
-// configuration that applies to the specified output.
-struct output_config *find_output_config(struct sway_output *sway_output) {
+// find_output_config_from_list returns a merged output_config containing all
+// stored configuration that applies to the specified output.
+static struct output_config *find_output_config_from_list(
+		struct output_config **configs, size_t configs_len,
+		struct sway_output *sway_output) {
 	const char *name = sway_output->wlr_output->name;
-	struct output_config *oc = NULL;
-
 	struct output_config *result = new_output_config(name);
-	if (config->reloading) {
-		default_output_config(result, sway_output->wlr_output);
+	if (result == NULL) {
+		return NULL;
 	}
 
+	// Set output defaults for the "base" configuration
+	result->enabled = 1;
+	result->power = 1;
+	result->scale = 0; // auto
+	result->subpixel = sway_output->detected_subpixel;
+	result->transform = WL_OUTPUT_TRANSFORM_NORMAL;
+	result->max_render_time = 0;
+	result->allow_tearing = 0;
+
 	char id[128];
 	output_get_identifier(id, sizeof(id), sway_output);
 
-	int i;
-	bool match = false;
-	if ((i = list_seq_find(config->output_configs, output_name_cmp, "*")) >= 0) {
-		match = true;
-		oc = config->output_configs->items[i];
-		merge_output_config(result, oc);
-	}
-	if ((i = list_seq_find(config->output_configs, output_name_cmp, name)) >= 0) {
-		match = true;
-		oc = config->output_configs->items[i];
-		merge_output_config(result, oc);
-	}
-	if ((i = list_seq_find(config->output_configs, output_name_cmp, id)) >= 0) {
-		match = true;
-		oc = config->output_configs->items[i];
-		merge_output_config(result, oc);
-	}
-
-	if (!match && !config->reloading) {
-		// No name, identifier, or wildcard config. Since we are not
-		// reloading with defaults, the output config will be empty, so
-		// just return NULL
-		free_output_config(result);
-		return NULL;
+	// We take a new config and merge on top, in order, the wildcard config,
+	// output config by name, and output config by identifier to form the final
+	// config. If there are multiple matches, they are merged in order.
+	struct output_config *oc = NULL;
+	const char *names[] = {"*", name, id, NULL};
+	for (const char **name = &names[0]; *name; name++) {
+		for (size_t idx = 0; idx < configs_len; idx++) {
+			oc = configs[idx];
+			if (strcmp(oc->name, *name) == 0) {
+				merge_output_config(result, oc);
+			}
+		}
 	}
 
 	return result;
 }
 
-static bool config_has_auto_mode(struct output_config *oc) {
+struct output_config *find_output_config(struct sway_output *sway_output) {
+	return find_output_config_from_list(
+			(struct output_config **)config->output_configs->items,
+			config->output_configs->length, sway_output);
+}
+
+static bool config_has_manual_mode(struct output_config *oc) {
 	if (!oc) {
-		return true;
+		return false;
 	}
 	if (oc->drm_mode.type != 0 && oc->drm_mode.type != (uint32_t)-1) {
 		return true;
@@ -651,6 +652,14 @@ static bool config_has_auto_mode(struct output_config *oc) {
 	return false;
 }
 
+/**
+ * An output config pre-matched to an output
+ */
+struct matched_output_config {
+	struct sway_output *output;
+	struct output_config *config;
+};
+
 struct search_context {
 	struct wlr_output_swapchain_manager *swapchain_mgr;
 	struct wlr_backend_output_state *states;
@@ -665,7 +674,9 @@ static void dump_output_state(struct wlr_output *wlr_output, struct wlr_output_s
 		sway_log(SWAY_DEBUG, "    enabled:       %s", state->enabled ? "yes" : "no");
 	}
 	if (state->committed & WLR_OUTPUT_STATE_RENDER_FORMAT) {
-		sway_log(SWAY_DEBUG, "    render_format: %d", state->render_format);
+		char *format_name = drmGetFormatName(state->render_format);
+		sway_log(SWAY_DEBUG, "    render_format: %s", format_name);
+		free(format_name);
 	}
 	if (state->committed & WLR_OUTPUT_STATE_MODE) {
 		if (state->mode_type == WLR_OUTPUT_STATE_MODE_CUSTOM) {
@@ -742,7 +753,8 @@ static bool search_mode(struct search_context *ctx, size_t output_idx) {
 	struct wlr_output_state *state = &backend_state->base;
 	struct wlr_output *wlr_output = backend_state->output;
 
-	if (!config_has_auto_mode(cfg->config)) {
+	// We only search for mode if one is not explicitly specified in the config
+	if (config_has_manual_mode(cfg->config)) {
 		return search_adaptive_sync(ctx, output_idx);
 	}
 
@@ -783,6 +795,8 @@ static bool search_render_format(struct search_context *ctx, size_t output_idx)
 		DRM_FORMAT_XRGB2101010,
 		DRM_FORMAT_XBGR2101010,
 		DRM_FORMAT_XRGB8888,
+		DRM_FORMAT_ARGB8888,
+		DRM_FORMAT_RGB565,
 		DRM_FORMAT_INVALID,
 	};
 	if (render_format_is_bgr(wlr_output->render_format)) {
@@ -793,9 +807,13 @@ static bool search_render_format(struct search_context *ctx, size_t output_idx)
 
 	const struct wlr_drm_format_set *primary_formats =
 		wlr_output_get_primary_formats(wlr_output, WLR_BUFFER_CAP_DMABUF);
-	bool need_10bit = cfg->config && cfg->config->render_bit_depth == RENDER_BIT_DEPTH_10;
+	enum render_bit_depth needed_bits = RENDER_BIT_DEPTH_8;
+	if (cfg->config && cfg->config->render_bit_depth != RENDER_BIT_DEPTH_DEFAULT) {
+		needed_bits = cfg->config->render_bit_depth;
+	}
 	for (size_t idx = 0; fmts[idx] != DRM_FORMAT_INVALID; idx++) {
-		if (!need_10bit && render_format_is_10bit(fmts[idx])) {
+		enum render_bit_depth format_bits = bit_depth_from_format(fmts[idx]);
+		if (needed_bits < format_bits) {
 			continue;
 		}
 		if (!wlr_drm_format_set_get(primary_formats, fmts[idx])) {
@@ -868,12 +886,12 @@ static int compare_matched_output_config_priority(const void *a, const void *b)
 	return 0;
 }
 
-void sort_output_configs_by_priority(struct matched_output_config *configs,
-		size_t configs_len) {
+static void sort_output_configs_by_priority(
+		struct matched_output_config *configs, size_t configs_len) {
 	qsort(configs, configs_len, sizeof(*configs), compare_matched_output_config_priority);
 }
 
-bool apply_output_configs(struct matched_output_config *configs,
+static bool apply_resolved_output_configs(struct matched_output_config *configs,
 		size_t configs_len, bool test_only, bool degrade_to_off) {
 	struct wlr_backend_output_state *states = calloc(configs_len, sizeof(*states));
 	if (!states) {
@@ -950,8 +968,14 @@ bool apply_output_configs(struct matched_output_config *configs,
 		sway_log(SWAY_DEBUG, "Finalizing config for %s",
 			cfg->output->wlr_output->name);
 		finalize_output_config(cfg->config, cfg->output);
+		arrange_layers(cfg->output);
 	}
 
+	arrange_root();
+	arrange_locks();
+	update_output_manager_config(&server);
+	transaction_commit_dirty();
+
 out:
 	wlr_output_swapchain_manager_finish(&swapchain_mgr);
 	for (size_t idx = 0; idx < configs_len; idx++) {
@@ -976,11 +1000,12 @@ out:
 	return ok;
 }
 
-void apply_all_output_configs(void) {
+bool apply_output_configs(struct output_config **ocs, size_t ocs_len,
+		bool test_only, bool degrade_to_off) {
 	size_t configs_len = wl_list_length(&root->all_outputs);
 	struct matched_output_config *configs = calloc(configs_len, sizeof(*configs));
 	if (!configs) {
-		return;
+		return false;
 	}
 
 	int config_idx = 0;
@@ -993,16 +1018,22 @@ void apply_all_output_configs(void) {
 
 		struct matched_output_config *config = &configs[config_idx++];
 		config->output = sway_output;
-		config->config = find_output_config(sway_output);
+		config->config = find_output_config_from_list(ocs, ocs_len, sway_output);
 	}
 
 	sort_output_configs_by_priority(configs, configs_len);
-	apply_output_configs(configs, configs_len, false, true);
+	bool ok = apply_resolved_output_configs(configs, configs_len, test_only, degrade_to_off);
 	for (size_t idx = 0; idx < configs_len; idx++) {
 		struct matched_output_config *cfg = &configs[idx];
 		free_output_config(cfg->config);
 	}
 	free(configs);
+	return ok;
+}
+
+void apply_stored_output_configs(void) {
+	apply_output_configs((struct output_config **)config->output_configs->items,
+			config->output_configs->length, false, true);
 }
 
 void free_output_config(struct output_config *oc) {

sway/desktop/layer_shell.c

@@ -90,6 +90,43 @@ void arrange_layers(struct sway_output *output) {
 	} else {
 		arrange_popups(root->layers.popup);
 	}
+
+	// Find topmost keyboard interactive layer, if such a layer exists
+	struct wlr_scene_tree *layers_above_shell[] = {
+		output->layers.shell_overlay,
+		output->layers.shell_top,
+	};
+	size_t nlayers = sizeof(layers_above_shell) / sizeof(layers_above_shell[0]);
+	struct wlr_scene_node *node;
+	struct sway_layer_surface *topmost = NULL;
+	for (size_t i = 0; i < nlayers; ++i) {
+		wl_list_for_each_reverse(node,
+				&layers_above_shell[i]->children, link) {
+			struct sway_layer_surface *surface = scene_descriptor_try_get(node,
+				SWAY_SCENE_DESC_LAYER_SHELL);
+			if (surface && surface->layer_surface->current.keyboard_interactive
+					== ZWLR_LAYER_SURFACE_V1_KEYBOARD_INTERACTIVITY_EXCLUSIVE &&
+					surface->layer_surface->surface->mapped) {
+				topmost = surface;
+				break;
+			}
+		}
+		if (topmost != NULL) {
+			break;
+		}
+	}
+
+	struct sway_seat *seat;
+	wl_list_for_each(seat, &server.input->seats, link) {
+		seat->has_exclusive_layer = false;
+		if (topmost != NULL) {
+			seat_set_focus_layer(seat, topmost->layer_surface);
+		} else if (seat->focused_layer &&
+				seat->focused_layer->current.keyboard_interactive
+					!= ZWLR_LAYER_SURFACE_V1_KEYBOARD_INTERACTIVITY_EXCLUSIVE) {
+			seat_set_focus_layer(seat, NULL);
+		}
+	}
 }
 
 static struct wlr_scene_tree *sway_layer_get_scene(struct sway_output *output,

sway/desktop/output.c

@@ -8,6 +8,7 @@
 #include <wlr/render/swapchain.h>
 #include <wlr/render/wlr_renderer.h>
 #include <wlr/types/wlr_buffer.h>
+#include <wlr/types/wlr_alpha_modifier_v1.h>
 #include <wlr/types/wlr_gamma_control_v1.h>
 #include <wlr/types/wlr_matrix.h>
 #include <wlr/types/wlr_output_layout.h>
@@ -216,6 +217,15 @@ static void output_configure_scene(struct sway_output *output,
 
 	if (node->type == WLR_SCENE_NODE_BUFFER) {
 		struct wlr_scene_buffer *buffer = wlr_scene_buffer_from_node(node);
+		struct wlr_scene_surface *surface = wlr_scene_surface_try_from_buffer(buffer);
+
+		if (surface) {
+			const struct wlr_alpha_modifier_surface_v1_state *alpha_modifier_state =
+				wlr_alpha_modifier_v1_get_surface_state(surface->surface);
+			if (alpha_modifier_state != NULL) {
+				opacity *= (float)alpha_modifier_state->multiplier;
+			}
+		}
 
 		// hack: don't call the scene setter because that will damage all outputs
 		// We don't want to damage outputs that aren't our current output that
@@ -232,6 +242,23 @@ static void output_configure_scene(struct sway_output *output,
 	}
 }
 
+static bool output_can_tear(struct sway_output *output) {
+	struct sway_workspace *workspace = output->current.active_workspace;
+	if (!workspace) {
+		return false;
+	}
+
+	struct sway_container *fullscreen_con = root->fullscreen_global;
+	if (!fullscreen_con) {
+		fullscreen_con = workspace->current.fullscreen;
+	}
+	if (fullscreen_con && fullscreen_con->view) {
+		return (output->allow_tearing && view_can_tear(fullscreen_con->view));
+	}
+
+	return false;
+}
+
 static int output_repaint_timer_handler(void *data) {
 	struct sway_output *output = data;
 
@@ -247,6 +274,13 @@ static int output_repaint_timer_handler(void *data) {
 		.color_transform = output->color_transform,
 	};
 
+	struct wlr_output *wlr_output = output->wlr_output;
+	struct wlr_scene_output *scene_output = output->scene_output;
+	if (!wlr_output->needs_frame && !output->gamma_lut_changed &&
+			!pixman_region32_not_empty(&scene_output->pending_commit_damage)) {
+		return 0;
+	}
+
 	struct wlr_output_state pending;
 	wlr_output_state_init(&pending);
 	if (!wlr_scene_output_build_state(output->scene_output, &pending, &opts)) {
@@ -269,6 +303,16 @@ static int output_repaint_timer_handler(void *data) {
 		}
 	}
 
+	if (output_can_tear(output)) {
+		pending.tearing_page_flip = true;
+
+		if (!wlr_output_test_state(output->wlr_output, &pending)) {
+			sway_log(SWAY_DEBUG, "Output test failed on '%s', retrying without tearing page-flip",
+				output->wlr_output->name);
+			pending.tearing_page_flip = false;
+		}
+	}
+
 	if (!wlr_output_commit_state(output->wlr_output, &pending)) {
 		sway_log(SWAY_ERROR, "Page-flip failed on output %s", output->wlr_output->name);
 	}
@@ -340,7 +384,7 @@ static void handle_frame(struct wl_listener *listener, void *user_data) {
 	wlr_scene_output_for_each_buffer(output->scene_output, send_frame_done_iterator, &data);
 }
 
-static void update_output_manager_config(struct sway_server *server) {
+void update_output_manager_config(struct sway_server *server) {
 	struct wlr_output_configuration_v1 *config =
 		wlr_output_configuration_v1_create();
 
@@ -370,24 +414,19 @@ static int timer_modeset_handle(void *data) {
 	wl_event_source_remove(server->delayed_modeset);
 	server->delayed_modeset = NULL;
 
-	apply_all_output_configs();
-	transaction_commit_dirty();
-	update_output_manager_config(server);
-
+	apply_stored_output_configs();
 	return 0;
 }
 
-static void request_modeset(struct sway_server *server) {
-	if (server->delayed_modeset == NULL) {
-		server->delayed_modeset = wl_event_loop_add_timer(server->wl_event_loop,
-			timer_modeset_handle, server);
-		wl_event_source_timer_update(server->delayed_modeset, 10);
+void request_modeset(void) {
+	if (server.delayed_modeset == NULL) {
+		server.delayed_modeset = wl_event_loop_add_timer(server.wl_event_loop,
+			timer_modeset_handle, &server);
+		wl_event_source_timer_update(server.delayed_modeset, 10);
 	}
 }
 
 static void begin_destroy(struct sway_output *output) {
-	struct sway_server *server = output->server;
-
 	if (output->enabled) {
 		output_disable(output);
 	}
@@ -408,7 +447,7 @@ static void begin_destroy(struct sway_output *output) {
 	output->wlr_output->data = NULL;
 	output->wlr_output = NULL;
 
-	request_modeset(server);
+	request_modeset();
 }
 
 static void handle_destroy(struct wl_listener *listener, void *data) {
@@ -429,17 +468,6 @@ static void handle_commit(struct wl_listener *listener, void *data) {
 		return;
 	}
 
-	if (event->state->committed & (
-			WLR_OUTPUT_STATE_MODE |
-			WLR_OUTPUT_STATE_TRANSFORM |
-			WLR_OUTPUT_STATE_SCALE)) {
-		arrange_layers(output);
-		arrange_output(output);
-		transaction_commit_dirty();
-
-		update_output_manager_config(output->server);
-	}
-
 	// Next time the output is enabled, try to re-apply the gamma LUT
 	if ((event->state->committed & WLR_OUTPUT_STATE_ENABLED) && !output->wlr_output->enabled) {
 		output->gamma_lut_changed = true;
@@ -462,7 +490,20 @@ static void handle_request_state(struct wl_listener *listener, void *data) {
 	struct sway_output *output =
 		wl_container_of(listener, output, request_state);
 	const struct wlr_output_event_request_state *event = data;
+
+	uint32_t committed = event->state->committed;
 	wlr_output_commit_state(output->wlr_output, event->state);
+
+	if (committed & (
+			WLR_OUTPUT_STATE_MODE |
+			WLR_OUTPUT_STATE_TRANSFORM |
+			WLR_OUTPUT_STATE_SCALE)) {
+		arrange_layers(output);
+		arrange_output(output);
+		transaction_commit_dirty();
+
+		update_output_manager_config(output->server);
+	}
 }
 
 static unsigned int last_headless_num = 0;
@@ -542,14 +583,7 @@ void handle_new_output(struct wl_listener *listener, void *data) {
 		sway_session_lock_add_output(server->session_lock.lock, output);
 	}
 
-	request_modeset(server);
-}
-
-void handle_output_layout_change(struct wl_listener *listener,
-		void *data) {
-	struct sway_server *server =
-		wl_container_of(listener, server, output_layout_change);
-	update_output_manager_config(server);
+	request_modeset();
 }
 
 void handle_gamma_control_set_gamma(struct wl_listener *listener, void *data) {
@@ -568,9 +602,8 @@ void handle_gamma_control_set_gamma(struct wl_listener *listener, void *data) {
 }
 
 static struct output_config *output_config_for_config_head(
-		struct wlr_output_configuration_head_v1 *config_head,
-		struct sway_output *output) {
-	struct output_config *oc = new_output_config(output->wlr_output->name);
+		struct wlr_output_configuration_head_v1 *config_head) {
+	struct output_config *oc = new_output_config(config_head->state.output->name);
 	oc->enabled = config_head->state.enabled;
 	if (!oc->enabled) {
 		return oc;
@@ -596,71 +629,52 @@ static struct output_config *output_config_for_config_head(
 }
 
 static void output_manager_apply(struct sway_server *server,
-		struct wlr_output_configuration_v1 *config, bool test_only) {
-	size_t configs_len = wl_list_length(&root->all_outputs);
-	struct matched_output_config *configs = calloc(configs_len, sizeof(*configs));
+		struct wlr_output_configuration_v1 *cfg, bool test_only) {
+	bool ok = false;
+	size_t configs_len = config->output_configs->length + wl_list_length(&cfg->heads);
+	struct output_config **configs = calloc(configs_len, sizeof(*configs));
 	if (!configs) {
-		return;
+		goto done;
+	}
+	size_t start_new_configs = config->output_configs->length;
+	for (size_t idx = 0; idx < start_new_configs; idx++) {
+		configs[idx] = config->output_configs->items[idx];
 	}
 
-	int config_idx = 0;
-	struct sway_output *sway_output;
-	wl_list_for_each(sway_output, &root->all_outputs, link) {
-		if (sway_output == root->fallback_output) {
-			configs_len--;
-			continue;
-		}
-
-		struct matched_output_config *cfg = &configs[config_idx++];
-		cfg->output = sway_output;
-
-		struct wlr_output_configuration_head_v1 *config_head;
-		wl_list_for_each(config_head, &config->heads, link) {
-			if (config_head->state.output == sway_output->wlr_output) {
-				cfg->config = output_config_for_config_head(config_head, sway_output);
-				break;
-			}
-		}
-		if (!cfg->config) {
-			cfg->config = find_output_config(sway_output);
-		}
+	size_t config_idx = start_new_configs;
+	struct wlr_output_configuration_head_v1 *config_head;
+	wl_list_for_each(config_head, &cfg->heads, link) {
+		// Generate the configuration and store it as a temporary
+		// config. We keep a record of it so we can remove it later.
+		struct output_config *oc = output_config_for_config_head(config_head);
+		configs[config_idx++] = oc;
 	}
 
-	sort_output_configs_by_priority(configs, configs_len);
-	bool ok = apply_output_configs(configs, configs_len, test_only, false);
-	for (size_t idx = 0; idx < configs_len; idx++) {
-		struct matched_output_config *cfg = &configs[idx];
-
-		// Only store new configs for successful non-test commits. Old configs,
-		// test-only and failed commits just get freed.
-		bool store_config = false;
+	// Try to commit without degrade to off enabled. Note that this will fail
+	// if any output configured for enablement fails to be enabled, even if it
+	// was not part of the config heads we were asked to configure.
+	ok = apply_output_configs(configs, configs_len, test_only, false);
+	for (size_t idx = start_new_configs; idx < configs_len; idx++) {
+		struct output_config *cfg = configs[idx];
 		if (!test_only && ok) {
-			struct wlr_output_configuration_head_v1 *config_head;
-			wl_list_for_each(config_head, &config->heads, link) {
-				if (config_head->state.output == cfg->output->wlr_output) {
-					store_config = true;
-					break;
-				}
-			}
-		}
-		if (store_config) {
-			store_output_config(cfg->config);
+			store_output_config(cfg);
 		} else {
-			free_output_config(cfg->config);
+			free_output_config(cfg);
 		}
 	}
 	free(configs);
 
+done:
 	if (ok) {
-		wlr_output_configuration_v1_send_succeeded(config);
+		wlr_output_configuration_v1_send_succeeded(cfg);
+		if (server->delayed_modeset != NULL) {
+			wl_event_source_remove(server->delayed_modeset);
+			server->delayed_modeset = NULL;
+		}
 	} else {
-		wlr_output_configuration_v1_send_failed(config);
-	}
-	wlr_output_configuration_v1_destroy(config);
-
-	if (!test_only) {
-		update_output_manager_config(server);
+		wlr_output_configuration_v1_send_failed(cfg);
 	}
+	wlr_output_configuration_v1_destroy(cfg);
 }
 
 void handle_output_manager_apply(struct wl_listener *listener, void *data) {
@@ -694,5 +708,5 @@ void handle_output_power_manager_set_mode(struct wl_listener *listener,
 		break;
 	}
 	store_output_config(oc);
-	request_modeset(output->server);
+	request_modeset();
 }

sway/desktop/tearing.c

@@ -0,0 +1,64 @@
+#include <wayland-server-core.h>
+#include <wlr/types/wlr_tearing_control_v1.h>
+#include "sway/server.h"
+#include "sway/tree/view.h"
+#include "sway/output.h"
+#include "log.h"
+
+struct sway_tearing_controller {
+	struct wlr_tearing_control_v1 *tearing_control;
+	struct wl_listener set_hint;
+	struct wl_listener destroy;
+
+	struct wl_list link; // sway_server::tearing_controllers
+};
+
+static void handle_tearing_controller_set_hint(struct wl_listener *listener,
+		void *data) {
+	struct sway_tearing_controller *controller =
+		wl_container_of(listener, controller, set_hint);
+
+	struct sway_view *view = view_from_wlr_surface(
+		controller->tearing_control->surface);
+	if (view) {
+		view->tearing_hint = controller->tearing_control->current;
+	}
+}
+
+static void handle_tearing_controller_destroy(struct wl_listener *listener,
+		void *data) {
+	struct sway_tearing_controller *controller =
+		wl_container_of(listener, controller, destroy);
+	wl_list_remove(&controller->set_hint.link);
+	wl_list_remove(&controller->destroy.link);
+	wl_list_remove(&controller->link);
+	free(controller);
+}
+
+void handle_new_tearing_hint(struct wl_listener *listener,
+		void *data) {
+	struct sway_server *server =
+		wl_container_of(listener, server, tearing_control_new_object);
+	struct wlr_tearing_control_v1 *tearing_control = data;
+
+	enum wp_tearing_control_v1_presentation_hint hint =
+		wlr_tearing_control_manager_v1_surface_hint_from_surface(
+			server->tearing_control_v1, tearing_control->surface);
+	sway_log(SWAY_DEBUG, "New presentation hint %d received for surface %p",
+		hint, tearing_control->surface);
+
+	struct sway_tearing_controller *controller =
+		calloc(1, sizeof(struct sway_tearing_controller));
+	if (!controller) {
+		return;
+	}
+
+	controller->tearing_control = tearing_control;
+	controller->set_hint.notify = handle_tearing_controller_set_hint;
+	wl_signal_add(&tearing_control->events.set_hint, &controller->set_hint);
+	controller->destroy.notify = handle_tearing_controller_destroy;
+	wl_signal_add(&tearing_control->events.destroy, &controller->destroy);
+	wl_list_init(&controller->link);
+
+	wl_list_insert(&server->tearing_controllers, &controller->link);
+}

sway/desktop/transaction.c

@@ -559,7 +559,7 @@ static void arrange_output(struct sway_output *output, int width, int height) {
 	for (int i = 0; i < output->current.workspaces->length; i++) {
 		struct sway_workspace *child = output->current.workspaces->items[i];
 
-		bool activated = output->current.active_workspace == child;
+		bool activated = output->current.active_workspace == child && output->wlr_output->enabled;
 
 		wlr_scene_node_reparent(&child->layers.tiling->node, output->layers.tiling);
 		wlr_scene_node_reparent(&child->layers.fullscreen->node, output->layers.fullscreen);
@@ -612,9 +612,11 @@ void arrange_popups(struct wlr_scene_tree *popups) {
 		struct sway_popup_desc *popup = scene_descriptor_try_get(node,
 			SWAY_SCENE_DESC_POPUP);
 
-		int lx, ly;
-		wlr_scene_node_coords(popup->relative, &lx, &ly);
-		wlr_scene_node_set_position(node, lx, ly);
+		if (popup) {
+			int lx, ly;
+			wlr_scene_node_coords(popup->relative, &lx, &ly);
+			wlr_scene_node_set_position(node, lx, ly);
+		}
 	}
 }
 
@@ -632,6 +634,15 @@ static void arrange_root(struct sway_root *root) {
 	for (int i = 0; i < root->scratchpad->length; i++) {
 		struct sway_container *con = root->scratchpad->items[i];
 
+		// When a container is moved to a scratchpad, it's possible that it
+		// was moved into a floating container as part of the same transaction.
+		// In this case, we need to make sure we reparent all the container's
+		// children so that disabling the container will disable all descendants.
+		if (!con->view) for (int ii = 0; ii < con->current.children->length; ii++) {
+			struct sway_container *child = con->current.children->items[ii];
+			wlr_scene_node_reparent(&child->scene_tree->node, con->content_tree);
+		}
+
 		wlr_scene_node_set_enabled(&con->scene_tree->node, false);
 	}
 

sway/desktop/xwayland.c

@@ -289,7 +289,9 @@ static void set_activated(struct sway_view *view, bool activated) {
 	}
 
 	wlr_xwayland_surface_activate(surface, activated);
-	wlr_xwayland_surface_restack(surface, NULL, XCB_STACK_MODE_ABOVE);
+	if (activated) {
+		wlr_xwayland_surface_restack(surface, NULL, XCB_STACK_MODE_ABOVE);
+	}
 }
 
 static void set_tiled(struct sway_view *view, bool tiled) {

sway/input/input-manager.c

@@ -4,7 +4,6 @@
 #include <math.h>
 #include <assert.h>
 #include <wlr/config.h>
-#include <wlr/backend/libinput.h>
 #include <wlr/types/wlr_cursor.h>
 #include <wlr/types/wlr_keyboard_group.h>
 #include <wlr/types/wlr_virtual_keyboard_v1.h>

sway/input/keyboard.c

@@ -1028,13 +1028,6 @@ static void sway_keyboard_set_layout(struct sway_keyboard *keyboard,
 		}
 	}
 
-	// If the seat has no active keyboard, set this one
-	struct wlr_seat *seat = keyboard->seat_device->sway_seat->wlr_seat;
-	struct wlr_keyboard *current_keyboard = seat->keyboard_state.keyboard;
-	if (current_keyboard == NULL) {
-		wlr_seat_set_keyboard(seat, keyboard->wlr);
-	}
-
 	if (keymap_changed) {
 		ipc_event_input("xkb_keymap",
 				  keyboard->seat_device->input_device);
@@ -1078,6 +1071,13 @@ void sway_keyboard_configure(struct sway_keyboard *keyboard) {
 		sway_keyboard_set_layout(keyboard, input_config);
 	}
 
+	// If the seat has no active keyboard, set this one
+	struct wlr_seat *seat = keyboard->seat_device->sway_seat->wlr_seat;
+	struct wlr_keyboard *current_keyboard = seat->keyboard_state.keyboard;
+	if (current_keyboard == NULL) {
+		wlr_seat_set_keyboard(seat, keyboard->wlr);
+	}
+
 	wl_list_remove(&keyboard->keyboard_key.link);
 	wl_signal_add(&keyboard->wlr->events.key, &keyboard->keyboard_key);
 	keyboard->keyboard_key.notify = handle_keyboard_key;

sway/input/text_input.c

@@ -11,8 +11,6 @@
 #include "sway/layers.h"
 #include "sway/server.h"
 
-static void input_popup_update(struct sway_input_popup *popup);
-
 static struct sway_text_input *relay_get_focusable_text_input(
 		struct sway_input_method_relay *relay) {
 	struct sway_text_input *text_input = NULL;
@@ -128,6 +126,89 @@ static void handle_im_destroy(struct wl_listener *listener, void *data) {
 	}
 }
 
+static void constrain_popup(struct sway_input_popup *popup) {
+	struct sway_text_input *text_input =
+		relay_get_focused_text_input(popup->relay);
+
+	if (!popup->desc.relative) {
+		return;
+	}
+
+	struct wlr_box parent = {0};
+	wlr_scene_node_coords(&popup->desc.relative->parent->node, &parent.x, &parent.y);
+
+	struct wlr_box geo = {0};
+	struct wlr_output *output;
+
+	if (popup->desc.view) {
+		struct sway_view *view = popup->desc.view;
+		output = wlr_output_layout_output_at(root->output_layout,
+			view->container->pending.content_x + view->geometry.x,
+			view->container->pending.content_y + view->geometry.y);
+
+		parent.width = view->geometry.width;
+		parent.height = view->geometry.height;
+		geo = view->geometry;
+	} else {
+		output = popup->fixed_output;
+	}
+
+	struct wlr_box output_box;
+	wlr_output_layout_get_box(root->output_layout, output, &output_box);
+
+	bool cursor_rect = text_input->input->current.features &
+		WLR_TEXT_INPUT_V3_FEATURE_CURSOR_RECTANGLE;
+	struct wlr_box cursor_area;
+	if (cursor_rect) {
+		cursor_area = text_input->input->current.cursor_rectangle;
+	} else {
+		cursor_area = (struct wlr_box) {
+			.width = parent.width,
+			.height = parent.height,
+		};
+	}
+
+	int popup_width = popup->popup_surface->surface->current.width;
+	int popup_height = popup->popup_surface->surface->current.height;
+	int x1 = parent.x + cursor_area.x;
+	int x2 = parent.x + cursor_area.x + cursor_area.width;
+	int y1 = parent.y + cursor_area.y;
+	int y2 = parent.y + cursor_area.y + cursor_area.height;
+	int x = x1;
+	int y = y2;
+
+	int available_right = output_box.x + output_box.width - x1;
+	int available_left = x2 - output_box.x;
+	if (available_right < popup_width && available_left > available_right) {
+		x = x2 - popup_width;
+	}
+
+	int available_down = output_box.y + output_box.height - y2;
+	int available_up = y1 - output_box.y;
+	if (available_down < popup_height && available_up > available_down) {
+		y = y1 - popup_height;
+	}
+
+	wlr_scene_node_set_position(popup->desc.relative, x - parent.x - geo.x, y - parent.y - geo.y);
+	if (cursor_rect) {
+		struct wlr_box box = {
+			.x = x1 - x,
+			.y = y1 - y,
+			.width = cursor_area.width,
+			.height = cursor_area.height,
+		};
+		wlr_input_popup_surface_v2_send_text_input_rectangle(
+			popup->popup_surface, &box);
+	}
+
+	if (popup->scene_tree) {
+		wlr_scene_node_set_position(&popup->scene_tree->node, x - geo.x, y - geo.y);
+	}
+}
+
+static void input_popup_set_focus(struct sway_input_popup *popup,
+		struct wlr_surface *surface);
+
 static void relay_send_im_state(struct sway_input_method_relay *relay,
 		struct wlr_text_input_v3 *input) {
 	struct wlr_input_method_v2 *input_method = relay->input_method;
@@ -148,10 +229,16 @@ static void relay_send_im_state(struct sway_input_method_relay *relay,
 			input->current.content_type.hint,
 			input->current.content_type.purpose);
 	}
+
+	struct sway_text_input *text_input = relay_get_focused_text_input(relay);
+
 	struct sway_input_popup *popup;
 	wl_list_for_each(popup, &relay->input_popups, link) {
-		// send_text_input_rectangle is called in this function
-		input_popup_update(popup);
+		if (text_input != NULL) {
+			input_popup_set_focus(popup, text_input->input->focused_surface);
+		} else {
+			input_popup_set_focus(popup, NULL);
+		}
 	}
 	wlr_input_method_v2_send_done(input_method);
 	// TODO: pass intent, display popup size
@@ -275,72 +362,52 @@ static void relay_handle_text_input(struct wl_listener *listener,
 	sway_text_input_create(relay, wlr_text_input);
 }
 
-static void input_popup_update(struct sway_input_popup *popup) {
-	struct sway_text_input *text_input =
-		relay_get_focused_text_input(popup->relay);
+static void input_popup_set_focus(struct sway_input_popup *popup,
+		struct wlr_surface *surface) {
+	wl_list_remove(&popup->focused_surface_unmap.link);
 
-	if (text_input == NULL || text_input->input->focused_surface == NULL) {
+	if (!popup->scene_tree) {
+		wl_list_init(&popup->focused_surface_unmap.link);
 		return;
 	}
 
-	if (popup->scene_tree != NULL) {
-		wlr_scene_node_destroy(&popup->scene_tree->node);
-		popup->scene_tree = NULL;
-	}
-	if (popup->desc.relative != NULL) {
+	if (popup->desc.relative) {
+		scene_descriptor_destroy(&popup->scene_tree->node, SWAY_SCENE_DESC_POPUP);
 		wlr_scene_node_destroy(popup->desc.relative);
 		popup->desc.relative = NULL;
 	}
-	popup->desc.view = NULL;
 
-	if (!popup->popup_surface->surface->mapped) {
+	if (surface == NULL) {
+		wl_list_init(&popup->focused_surface_unmap.link);
+		wlr_scene_node_set_enabled(&popup->scene_tree->node, false);
 		return;
 	}
 
-	bool cursor_rect = text_input->input->current.features
-		& WLR_TEXT_INPUT_V3_FEATURE_CURSOR_RECTANGLE;
-	struct wlr_surface *focused_surface = text_input->input->focused_surface;
-	struct wlr_box cursor_area = text_input->input->current.cursor_rectangle;
-
-	struct wlr_box output_box;
-	struct wlr_box parent = {0};
 	struct wlr_layer_surface_v1 *layer_surface =
-		wlr_layer_surface_v1_try_from_wlr_surface(focused_surface);
+		wlr_layer_surface_v1_try_from_wlr_surface(surface);
+
 	struct wlr_scene_tree *relative_parent;
+	if (layer_surface) {
+		wl_signal_add(&layer_surface->surface->events.unmap,
+			&popup->focused_surface_unmap);
 
-	struct wlr_box geo = {0};
-
-	popup->scene_tree = wlr_scene_subsurface_tree_create(root->layers.popup, popup->popup_surface->surface);
-	if (layer_surface != NULL) {
-		struct sway_layer_surface *layer =
-			layer_surface->data;
+		struct sway_layer_surface *layer = layer_surface->data;
 		if (layer == NULL) {
 			return;
 		}
 
 		relative_parent = layer->scene->tree;
-		struct wlr_output *output = layer->layer_surface->output;
-		wlr_output_layout_get_box(root->output_layout, output, &output_box);
-		int lx, ly;
-		wlr_scene_node_coords(&layer->tree->node, &lx, &ly);
-		parent.x = lx;
-		parent.y = ly;
 		popup->desc.view = NULL;
-	} else {
-		struct sway_view *view = view_from_wlr_surface(focused_surface);
-		relative_parent = view->scene_tree;
-		geo = view->geometry;
-		int lx, ly;
-		wlr_scene_node_coords(&view->scene_tree->node, &lx, &ly);
-		struct wlr_output *output = wlr_output_layout_output_at(root->output_layout,
-			view->container->pending.content_x + view->geometry.x,
-			view->container->pending.content_y + view->geometry.y);
-		wlr_output_layout_get_box(root->output_layout, output, &output_box);
-		parent.x = lx;
-		parent.y = ly;
 
-		parent.width = view->geometry.width;
-		parent.height = view->geometry.height;
+		// we don't need to add an event here to NULL out this field because
+		// this field will only be initialized if the popup is part of a layer
+		// surface. Layer surfaces get destroyed as part of the output being
+		// destroyed, thus also trickling down to popups.
+		popup->fixed_output = layer->layer_surface->output;
+	} else {
+		struct sway_view *view = view_from_wlr_surface(surface);
+		wl_signal_add(&view->events.unmap, &popup->focused_surface_unmap);
+		relative_parent = view->scene_tree;
 		popup->desc.view = view;
 	}
 
@@ -354,93 +421,58 @@ static void input_popup_update(struct sway_input_popup *popup) {
 		return;
 	}
 
-	if (!cursor_rect) {
-		cursor_area.x = 0;
-		cursor_area.y = 0;
-		cursor_area.width = parent.width;
-		cursor_area.height = parent.height;
-	}
-
-	int popup_width = popup->popup_surface->surface->current.width;
-	int popup_height = popup->popup_surface->surface->current.height;
-	int x1 = parent.x + cursor_area.x;
-	int x2 = parent.x + cursor_area.x + cursor_area.width;
-	int y1 = parent.y + cursor_area.y;
-	int y2 = parent.y + cursor_area.y + cursor_area.height;
-	int x = x1;
-	int y = y2;
-
-	int available_right = output_box.x + output_box.width - x1;
-	int available_left = x2 - output_box.x;
-	if (available_right < popup_width && available_left > available_right) {
-		x = x2 - popup_width;
-	}
-
-	int available_down = output_box.y + output_box.height - y2;
-	int available_up = y1 - output_box.y;
-	if (available_down < popup_height && available_up > available_down) {
-		y = y1 - popup_height;
-	}
-
-	wlr_scene_node_set_position(&relative->node, x - parent.x - geo.x, y - parent.y - geo.y);
-	if (cursor_rect) {
-		struct wlr_box box = {
-			.x = x1 - x,
-			.y = y1 - y,
-			.width = cursor_area.width,
-			.height = cursor_area.height,
-		};
-		wlr_input_popup_surface_v2_send_text_input_rectangle(
-			popup->popup_surface, &box);
-	}
-	wlr_scene_node_set_position(&popup->scene_tree->node, x - geo.x, y - geo.y);
-}
-
-static void input_popup_set_focus(struct sway_input_popup *popup,
-		struct wlr_surface *surface) {
-	wl_list_remove(&popup->focused_surface_unmap.link);
-
-	if (surface == NULL) {
-		wl_list_init(&popup->focused_surface_unmap.link);
-		input_popup_update(popup);
-		return;
-	}
-	struct wlr_layer_surface_v1 *layer_surface =
-		wlr_layer_surface_v1_try_from_wlr_surface(surface);
-	if (layer_surface != NULL) {
-		wl_signal_add(
-			&layer_surface->surface->events.unmap, &popup->focused_surface_unmap);
-		input_popup_update(popup);
-		return;
-	}
-
-	struct sway_view *view = view_from_wlr_surface(surface);
-	wl_signal_add(&view->events.unmap, &popup->focused_surface_unmap);
+	constrain_popup(popup);
+	wlr_scene_node_set_enabled(&popup->scene_tree->node, true);
 }
 
 static void handle_im_popup_destroy(struct wl_listener *listener, void *data) {
 	struct sway_input_popup *popup =
 		wl_container_of(listener, popup, popup_destroy);
+	wlr_scene_node_destroy(&popup->scene_tree->node);
 	wl_list_remove(&popup->focused_surface_unmap.link);
 	wl_list_remove(&popup->popup_surface_commit.link);
+	wl_list_remove(&popup->popup_surface_map.link);
+	wl_list_remove(&popup->popup_surface_unmap.link);
 	wl_list_remove(&popup->popup_destroy.link);
 	wl_list_remove(&popup->link);
 
 	free(popup);
 }
 
-static void handle_im_popup_surface_commit(struct wl_listener *listener,
-		void *data) {
+static void handle_im_popup_surface_map(struct wl_listener *listener, void *data) {
+	struct sway_input_popup *popup =
+		wl_container_of(listener, popup, popup_surface_map);
+	struct sway_text_input *text_input = relay_get_focused_text_input(popup->relay);
+	if (text_input != NULL) {
+		input_popup_set_focus(popup, text_input->input->focused_surface);
+	} else {
+		input_popup_set_focus(popup, NULL);
+	}
+}
+
+static void handle_im_popup_surface_unmap(struct wl_listener *listener, void *data) {
+	struct sway_input_popup *popup =
+		wl_container_of(listener, popup, popup_surface_unmap);
+
+	// relative should already be freed as it should be a child of the just unmapped scene
+	popup->desc.relative = NULL;
+
+	input_popup_set_focus(popup, NULL);
+}
+
+static void handle_im_popup_surface_commit(struct wl_listener *listener, void *data) {
 	struct sway_input_popup *popup =
 		wl_container_of(listener, popup, popup_surface_commit);
-	input_popup_update(popup);
+
+	constrain_popup(popup);
 }
 
 static void handle_im_focused_surface_unmap(
 		struct wl_listener *listener, void *data) {
 	struct sway_input_popup *popup =
 		wl_container_of(listener, popup, focused_surface_unmap);
-	input_popup_update(popup);
+
+	input_popup_set_focus(popup, NULL);
 }
 
 static void handle_im_new_popup_surface(struct wl_listener *listener,
@@ -448,16 +480,38 @@ static void handle_im_new_popup_surface(struct wl_listener *listener,
 	struct sway_input_method_relay *relay = wl_container_of(listener, relay,
 		input_method_new_popup_surface);
 	struct sway_input_popup *popup = calloc(1, sizeof(*popup));
+	if (!popup) {
+		sway_log(SWAY_ERROR, "Failed to allocate an input method popup");
+		return;
+	}
+
 	popup->relay = relay;
 	popup->popup_surface = data;
 	popup->popup_surface->data = popup;
 
-	wl_signal_add(
-		&popup->popup_surface->events.destroy, &popup->popup_destroy);
+	popup->scene_tree = wlr_scene_tree_create(root->layers.popup);
+	if (!popup->scene_tree) {
+		sway_log(SWAY_ERROR, "Failed to allocate scene tree");
+		free(popup);
+		return;
+	}
+
+	if (!wlr_scene_subsurface_tree_create(popup->scene_tree,
+			popup->popup_surface->surface)) {
+		sway_log(SWAY_ERROR, "Failed to allocate subsurface tree");
+		wlr_scene_node_destroy(&popup->scene_tree->node);
+		free(popup);
+		return;
+	}
+
+	wl_signal_add(&popup->popup_surface->events.destroy, &popup->popup_destroy);
 	popup->popup_destroy.notify = handle_im_popup_destroy;
-	wl_signal_add(&popup->popup_surface->surface->events.commit,
-		&popup->popup_surface_commit);
+	wl_signal_add(&popup->popup_surface->surface->events.commit, &popup->popup_surface_commit);
 	popup->popup_surface_commit.notify = handle_im_popup_surface_commit;
+	wl_signal_add(&popup->popup_surface->surface->events.map, &popup->popup_surface_map);
+	popup->popup_surface_map.notify = handle_im_popup_surface_map;
+	wl_signal_add(&popup->popup_surface->surface->events.unmap, &popup->popup_surface_unmap);
+	popup->popup_surface_unmap.notify = handle_im_popup_surface_unmap;
 	wl_list_init(&popup->focused_surface_unmap.link);
 	popup->focused_surface_unmap.notify = handle_im_focused_surface_unmap;
 

sway/ipc-json.c

@@ -399,6 +399,8 @@ static void ipc_json_describe_enabled_output(struct sway_output *output,
 	}
 
 	json_object_object_add(object, "max_render_time", json_object_new_int(output->max_render_time));
+
+	json_object_object_add(object, "allow_tearing", json_object_new_boolean(output->allow_tearing));
 }
 
 json_object *ipc_json_describe_disabled_output(struct sway_output *output) {
@@ -593,6 +595,8 @@ static void ipc_json_describe_view(struct sway_container *c, json_object *object
 
 	json_object_object_add(object, "max_render_time", json_object_new_int(c->view->max_render_time));
 
+	json_object_object_add(object, "allow_tearing", json_object_new_boolean(view_can_tear(c->view)));
+
 	json_object_object_add(object, "shell", json_object_new_string(view_get_shell(c->view)));
 
 	json_object_object_add(object, "inhibit_idle",
@@ -1129,7 +1133,9 @@ json_object *ipc_json_describe_input(struct sway_input_device *device) {
 		json_object *layouts_arr = json_object_new_array();
 		json_object_object_add(object, "xkb_layout_names", layouts_arr);
 
-		xkb_layout_index_t num_layouts = xkb_keymap_num_layouts(keymap);
+		xkb_layout_index_t num_layouts =
+			keymap ? xkb_keymap_num_layouts(keymap) : 0;
+		// Virtual keyboards might have null keymap
 		xkb_layout_index_t layout_idx;
 		for (layout_idx = 0; layout_idx < num_layouts; layout_idx++) {
 			const char *layout = xkb_keymap_layout_get_name(keymap, layout_idx);

sway/lock.c

@@ -8,6 +8,7 @@
 #include "sway/layers.h"
 #include "sway/output.h"
 #include "sway/server.h"
+#include "sway/lock.h"
 
 struct sway_session_lock_output {
 	struct wlr_scene_tree *tree;
@@ -19,7 +20,6 @@ struct sway_session_lock_output {
 	struct wl_list link; // sway_session_lock::outputs
 
 	struct wl_listener destroy;
-	struct wl_listener commit;
 
 	struct wlr_session_lock_surface_v1 *surface;
 
@@ -89,6 +89,17 @@ static void lock_output_reconfigure(struct sway_session_lock_output *output) {
 	}
 }
 
+void arrange_locks(void) {
+	if (server.session_lock.lock == NULL) {
+		return;
+	}
+
+	struct sway_session_lock_output *lock_output;
+	wl_list_for_each(lock_output, &server.session_lock.lock->outputs, link) {
+		lock_output_reconfigure(lock_output);
+	}
+}
+
 static void handle_new_surface(struct wl_listener *listener, void *data) {
 	struct sway_session_lock *lock = wl_container_of(listener, lock, new_surface);
 	struct wlr_session_lock_surface_v1 *lock_surface = data;
@@ -125,7 +136,6 @@ static void sway_session_lock_output_destroy(struct sway_session_lock_output *ou
 		wl_list_remove(&output->surface_map.link);
 	}
 
-	wl_list_remove(&output->commit.link);
 	wl_list_remove(&output->destroy.link);
 	wl_list_remove(&output->link);
 
@@ -138,18 +148,6 @@ static void lock_node_handle_destroy(struct wl_listener *listener, void *data) {
 	sway_session_lock_output_destroy(output);
 }
 
-static void lock_output_handle_commit(struct wl_listener *listener, void *data) {
-	struct wlr_output_event_commit *event = data;
-	struct sway_session_lock_output *output =
-		wl_container_of(listener, output, commit);
-	if (event->state->committed & (
-			WLR_OUTPUT_STATE_MODE |
-			WLR_OUTPUT_STATE_SCALE |
-			WLR_OUTPUT_STATE_TRANSFORM)) {
-		lock_output_reconfigure(output);
-	}
-}
-
 static struct sway_session_lock_output *session_lock_output_create(
 		struct sway_session_lock *lock, struct sway_output *output) {
 	struct sway_session_lock_output *lock_output = calloc(1, sizeof(*lock_output));
@@ -186,9 +184,6 @@ static struct sway_session_lock_output *session_lock_output_create(
 	lock_output->destroy.notify = lock_node_handle_destroy;
 	wl_signal_add(&tree->node.events.destroy, &lock_output->destroy);
 
-	lock_output->commit.notify = lock_output_handle_commit;
-	wl_signal_add(&output->wlr_output->events.commit, &lock_output->commit);
-
 	lock_output_reconfigure(lock_output);
 
 	wl_list_insert(&lock->outputs, &lock_output->link);

sway/meson.build

@@ -18,6 +18,7 @@ sway_sources = files(
 	'desktop/idle_inhibit_v1.c',
 	'desktop/layer_shell.c',
 	'desktop/output.c',
+	'desktop/tearing.c',
 	'desktop/transaction.c',
 	'desktop/xdg_shell.c',
 	'desktop/launcher.c',
@@ -41,6 +42,7 @@ sway_sources = files(
 	'config/seat.c',
 	'config/input.c',
 
+	'commands/allow_tearing.c',
 	'commands/assign.c',
 	'commands/bar.c',
 	'commands/bind.c',
@@ -188,6 +190,7 @@ sway_sources = files(
 	'commands/input/xkb_variant.c',
 
 	'commands/output/adaptive_sync.c',
+	'commands/output/allow_tearing.c',
 	'commands/output/background.c',
 	'commands/output/disable.c',
 	'commands/output/dpms.c',

sway/server.c

@@ -9,6 +9,7 @@
 #include <wlr/config.h>
 #include <wlr/render/allocator.h>
 #include <wlr/render/wlr_renderer.h>
+#include <wlr/types/wlr_alpha_modifier_v1.h>
 #include <wlr/types/wlr_compositor.h>
 #include <wlr/types/wlr_content_type_v1.h>
 #include <wlr/types/wlr_cursor_shape_v1.h>
@@ -203,8 +204,8 @@ static void handle_renderer_lost(struct wl_listener *listener, void *data) {
 
 	wlr_compositor_set_renderer(server->compositor, renderer);
 
-	for (int i = 0; i < root->outputs->length; ++i) {
-		struct sway_output *output = root->outputs->items[i];
+	struct sway_output *output;
+	wl_list_for_each(output, &root->all_outputs, link) {
 		wlr_output_init_render(output->wlr_output,
 			server->allocator, server->renderer);
 	}
@@ -272,9 +273,6 @@ bool server_init(struct sway_server *server) {
 
 	server->new_output.notify = handle_new_output;
 	wl_signal_add(&server->backend->events.new_output, &server->new_output);
-	server->output_layout_change.notify = handle_output_layout_change;
-	wl_signal_add(&root->output_layout->events.change,
-		&server->output_layout_change);
 
 	server->xdg_output_manager_v1 =
 		wlr_xdg_output_manager_v1_create(server->wl_display, root->output_layout);
@@ -324,6 +322,7 @@ bool server_init(struct sway_server *server) {
 		&server->pointer_constraint);
 
 	wlr_presentation_create(server->wl_display, server->backend);
+	wlr_alpha_modifier_v1_create(server->wl_display);
 
 	server->output_manager_v1 =
 		wlr_output_manager_v1_create(server->wl_display);
@@ -372,6 +371,13 @@ bool server_init(struct sway_server *server) {
 		wlr_content_type_manager_v1_create(server->wl_display, 1);
 	wlr_fractional_scale_manager_v1_create(server->wl_display, 1);
 
+	server->tearing_control_v1 =
+		wlr_tearing_control_manager_v1_create(server->wl_display, 1);
+	server->tearing_control_new_object.notify = handle_new_tearing_hint;
+	wl_signal_add(&server->tearing_control_v1->events.new_object,
+		&server->tearing_control_new_object);
+	wl_list_init(&server->tearing_controllers);
+
 	struct wlr_xdg_foreign_registry *foreign_registry =
 		wlr_xdg_foreign_registry_create(server->wl_display);
 	wlr_xdg_foreign_v1_create(server->wl_display, foreign_registry);

sway/sway-output.5.scd

@@ -154,7 +154,7 @@ must be separated by one space. For example:
 	This setting only has an effect on Wayland and DRM backends, as support for
 	presentation timestamps and predicted output refresh rate is required.
 
-*output* <name> adaptive_sync on|off
+*output* <name> adaptive_sync on|off|toggle
 	Enables or disables adaptive synchronization (often referred to as Variable
 	Refresh Rate, or by the vendor-specific names FreeSync/G-Sync).
 
@@ -163,9 +163,9 @@ must be separated by one space. For example:
 	adaptive sync can improve latency, but can cause flickering on some
 	hardware.
 
-*output* <name> render_bit_depth 8|10
-	Controls the color channel bit depth at which frames are rendered; the
-	default is currently 8 bits per channel.
+*output* <name> render_bit_depth 6|8|10
+	Controls the maximum color channel bit depth at which frames are
+	rendered; the default is currently 8 bits per channel.
 
 	Setting higher values will not have an effect if hardware and software lack
 	support for such bit depths. Successfully increasing the render bit depth
@@ -190,6 +190,26 @@ must be separated by one space. For example:
 	may have no effect or produce unexpected output when used together with future
 	HDR support features.
 
+*output* <name> allow_tearing yes|no
+	Allows or disallows screen tearing as a result of immediate page flips,
+	and an immediate presentation mode from a client. The default is that no
+	screen tearing is allowed.
+
+	With immediate page flips, frames from the client are presented as soon
+	as possible instead of synchronizing with the monitor's vblank interval 
+	(VSync). 
+	
+	It is recommended to set *max_render_time* to *off*. In that case a page flip
+	happens as soon as a client updates. Otherwise, tearing will only happen if
+	rendering takes longer than the configured milliseconds before the next
+	display refresh.
+
+	To adjust whether tearing is allowed for specific applications, see
+	*allow_tearing* in *sway*(5). Note that tearing will only be enabled
+	when it's allowed for both the output and the application.
+
+	This setting only has effect when a window is fullscreen on the output.
+
 # SEE ALSO
 
 *sway*(5) *sway-input*(5)

sway/sway.5.scd

@@ -57,6 +57,7 @@ which you may only select one. *[...]* is used for optional arguments, and
 This section only lists general commands. For input and output commands, refer
 to *sway-input*(5) and *sway-output*(5).
 
+## Config only commands
 The following commands may only be used in the configuration file.
 
 *bar* [<bar-id>] <bar-subcommands...>
@@ -98,6 +99,7 @@ The following commands may only be used in the configuration file.
 	machines, it may be desirable to have Xwayland started immediately by
 	using _force_ instead of _enable_.
 
+## Runtime only commands
 The following commands cannot be used directly in the configuration file.
 They are expected to be used with *bindsym* or at runtime through *swaymsg*(1).
 
@@ -215,6 +217,20 @@ set|plus|minus|toggle <amount>
 	effect on the output the window is currently on. See *sway-output*(5) for
 	further details.
 
+*allow_tearing* yes|no
+	Allows or disallows screen tearing as a result of immediate page flips
+	for a fullscreen application.
+
+	When this option is not set, the tearing hints provided by the application
+	determine whether tearing is allowed. When _yes_ is specified,
+	the application allows tearing regardless of the tearing hints.
+	When _no_ is specified, tearing will never be allowed on the application,
+	regardless of the tearing hints.
+
+	This setting only has an effect if tearing is allowed on the output through
+	the per-output *allow_tearing* setting. See *sway-output*(5) 
+	for further details.
+
 *move* left|right|up|down [<px> px]
 	Moves the focused container in the direction specified. The optional _px_
 	argument specifies how many pixels to move the container. If unspecified,
@@ -371,6 +387,7 @@ set|plus|minus|toggle <amount>
 
 	The default format is "%title".
 
+## Config or runtime commands
 The following commands may be used either in the configuration file or at
 runtime.
 

sway/tree/arrange.c

@@ -314,14 +314,9 @@ void arrange_output(struct sway_output *output) {
 	if (config->reloading) {
 		return;
 	}
-	struct wlr_box output_box;
-	wlr_output_layout_get_box(root->output_layout,
-		output->wlr_output, &output_box);
-	output->lx = output_box.x;
-	output->ly = output_box.y;
-	output->width = output_box.width;
-	output->height = output_box.height;
-
+	if (!output->wlr_output->enabled) {
+		return;
+	}
 	for (int i = 0; i < output->workspaces->length; ++i) {
 		struct sway_workspace *workspace = output->workspaces->items[i];
 		arrange_workspace(workspace);

sway/tree/container.c

@@ -22,6 +22,7 @@
 #include "sway/tree/workspace.h"
 #include "sway/xdg_decoration.h"
 #include "list.h"
+#include "pango.h"
 #include "log.h"
 #include "stringop.h"
 
@@ -499,6 +500,7 @@ void container_destroy(struct sway_container *con) {
 	}
 	free(con->title);
 	free(con->formatted_title);
+	free(con->title_format);
 	list_free(con->pending.children);
 	list_free(con->current.children);
 
@@ -645,6 +647,91 @@ bool container_has_ancestor(struct sway_container *descendant,
 	return false;
 }
 
+static char *escape_pango_markup(const char *buffer) {
+	size_t length = escape_markup_text(buffer, NULL);
+	char *escaped_title = calloc(length + 1, sizeof(char));
+	escape_markup_text(buffer, escaped_title);
+	return escaped_title;
+}
+
+static size_t append_prop(char *buffer, const char *value) {
+	if (!value) {
+		return 0;
+	}
+	// If using pango_markup in font, we need to escape all markup chars
+	// from values to make sure tags are not inserted by clients
+	if (config->pango_markup) {
+		char *escaped_value = escape_pango_markup(value);
+		lenient_strcat(buffer, escaped_value);
+		size_t len = strlen(escaped_value);
+		free(escaped_value);
+		return len;
+	} else {
+		lenient_strcat(buffer, value);
+		return strlen(value);
+	}
+}
+
+/**
+ * Calculate and return the length of the formatted title.
+ * If buffer is not NULL, also populate the buffer with the formatted title.
+ */
+size_t parse_title_format(struct sway_container *container, char *buffer) {
+	if (!container->title_format || strcmp(container->title_format, "%title") == 0) {
+		if (container->view) {
+			return append_prop(buffer, view_get_title(container->view));
+		} else {
+			return container_build_representation(container->pending.layout, container->pending.children, buffer);
+		}
+	}
+
+	size_t len = 0;
+	char *format = container->title_format;
+	char *next = strchr(format, '%');
+	while (next) {
+		// Copy everything up to the %
+		lenient_strncat(buffer, format, next - format);
+		len += next - format;
+		format = next;
+
+		if (strncmp(next, "%title", 6) == 0) {
+			if (container->view) {
+				len += append_prop(buffer, view_get_title(container->view));
+			} else {
+				len += container_build_representation(container->pending.layout, container->pending.children, buffer);
+			}
+			format += 6;
+		} else if (container->view) {
+			if (strncmp(next, "%app_id", 7) == 0) {
+				len += append_prop(buffer, view_get_app_id(container->view));
+				format += 7;
+			} else if (strncmp(next, "%class", 6) == 0) {
+				len += append_prop(buffer, view_get_class(container->view));
+				format += 6;
+			} else if (strncmp(next, "%instance", 9) == 0) {
+				len += append_prop(buffer, view_get_instance(container->view));
+				format += 9;
+			} else if (strncmp(next, "%shell", 6) == 0) {
+				len += append_prop(buffer, view_get_shell(container->view));
+				format += 6;
+			} else {
+				lenient_strcat(buffer, "%");
+				++format;
+				++len;
+			}
+		} else {
+			lenient_strcat(buffer, "%");
+			++format;
+			++len;
+		}
+		next = strchr(format, '%');
+	}
+	lenient_strcat(buffer, format);
+	len += strlen(format);
+
+	return len;
+}
+
 /**
  * Calculate and return the length of the tree representation.
  * An example tree representation is: V[Terminal, Firefox]
@@ -700,16 +787,14 @@ size_t container_build_representation(enum sway_container_layout layout,
 
 void container_update_representation(struct sway_container *con) {
 	if (!con->view) {
-		size_t len = container_build_representation(con->pending.layout,
-				con->pending.children, NULL);
+		size_t len = parse_title_format(con, NULL);
 		free(con->formatted_title);
 		con->formatted_title = calloc(len + 1, sizeof(char));
 		if (!sway_assert(con->formatted_title,
 					"Unable to allocate title string")) {
 			return;
 		}
-		container_build_representation(con->pending.layout, con->pending.children,
-				con->formatted_title);
+		parse_title_format(con, con->formatted_title);
 
 		if (con->title_bar.title_text) {
 			sway_text_node_set_text(con->title_bar.title_text, con->formatted_title);
@@ -773,11 +858,11 @@ void floating_fix_coordinates(struct sway_container *con, struct wlr_box *old, s
 		// Fall back to centering on the workspace.
 		container_floating_move_to_center(con);
 	} else {
-		int rel_x = con->pending.x - old->x + (con->pending.width / 2);
-		int rel_y = con->pending.y - old->y + (con->pending.height / 2);
+		double rel_x = con->pending.x - old->x + (con->pending.width / 2);
+		double rel_y = con->pending.y - old->y + (con->pending.height / 2);
 
-		con->pending.x = new->x + (double)(rel_x * new->width) / old->width - (con->pending.width / 2);
-		con->pending.y = new->y + (double)(rel_y * new->height) / old->height - (con->pending.height / 2);
+		con->pending.x = new->x + (rel_x * new->width) / old->width - (con->pending.width / 2);
+		con->pending.y = new->y + (rel_y * new->height) / old->height - (con->pending.height / 2);
 
 		sway_log(SWAY_DEBUG, "Transformed container %p to coords (%f, %f)", con, con->pending.x, con->pending.y);
 	}

sway/tree/output.c

@@ -180,12 +180,7 @@ void output_enable(struct sway_output *output) {
 		ws->layout = output_get_default_layout(output);
 	}
 
-	input_manager_configure_xcursor();
-
 	wl_signal_emit_mutable(&root->events.new_node, &output->node);
-
-	arrange_layers(output);
-	arrange_root();
 }
 
 static void evacuate_sticky(struct sway_workspace *old_ws,
@@ -300,13 +295,6 @@ void output_disable(struct sway_output *output) {
 	list_del(root->outputs, index);
 
 	output->enabled = false;
-
-	arrange_root();
-
-	// Reconfigure all devices, since devices with map_to_output directives for
-	// an output that goes offline should stop sending events as long as the
-	// output remains offline.
-	input_manager_configure_all_input_mappings();
 }
 
 void output_begin_destroy(struct sway_output *output) {

sway/tree/root.c

@@ -19,12 +19,6 @@
 
 struct sway_root *root;
 
-static void output_layout_handle_change(struct wl_listener *listener,
-		void *data) {
-	arrange_root();
-	transaction_commit_dirty();
-}
-
 struct sway_root *root_create(struct wl_display *wl_display) {
 	struct sway_root *root = calloc(1, sizeof(struct sway_root));
 	if (!root) {
@@ -81,14 +75,10 @@ struct sway_root *root_create(struct wl_display *wl_display) {
 	root->non_desktop_outputs = create_list();
 	root->scratchpad = create_list();
 
-	root->output_layout_change.notify = output_layout_handle_change;
-	wl_signal_add(&root->output_layout->events.change,
-		&root->output_layout_change);
 	return root;
 }
 
 void root_destroy(struct sway_root *root) {
-	wl_list_remove(&root->output_layout_change.link);
 	list_free(root->scratchpad);
 	list_free(root->non_desktop_outputs);
 	list_free(root->outputs);

sway/tree/view.c

@@ -34,7 +34,6 @@
 #include "sway/tree/workspace.h"
 #include "sway/config.h"
 #include "sway/xdg_decoration.h"
-#include "pango.h"
 #include "stringop.h"
 
 bool view_init(struct sway_view *view, enum sway_view_type type,
@@ -58,6 +57,7 @@ bool view_init(struct sway_view *view, enum sway_view_type type,
 	view->executed_criteria = create_list();
 	view->allow_request_urgent = true;
 	view->shortcuts_inhibit = SHORTCUTS_INHIBIT_DEFAULT;
+	view->tearing_mode = TEARING_WINDOW_HINT;
 	wl_signal_init(&view->events.unmap);
 	return true;
 }
@@ -80,8 +80,6 @@ void view_destroy(struct sway_view *view) {
 
 	view_assign_ctx(view, NULL);
 	wlr_scene_node_destroy(&view->scene_tree->node);
-	free(view->title_format);
-
 	if (view->impl->destroy) {
 		view->impl->destroy(view);
 	} else {
@@ -990,77 +988,6 @@ struct sway_view *view_from_wlr_surface(struct wlr_surface *wlr_surface) {
 	return NULL;
 }
 
-static char *escape_pango_markup(const char *buffer) {
-	size_t length = escape_markup_text(buffer, NULL);
-	char *escaped_title = calloc(length + 1, sizeof(char));
-	escape_markup_text(buffer, escaped_title);
-	return escaped_title;
-}
-
-static size_t append_prop(char *buffer, const char *value) {
-	if (!value) {
-		return 0;
-	}
-	// If using pango_markup in font, we need to escape all markup chars
-	// from values to make sure tags are not inserted by clients
-	if (config->pango_markup) {
-		char *escaped_value = escape_pango_markup(value);
-		lenient_strcat(buffer, escaped_value);
-		size_t len = strlen(escaped_value);
-		free(escaped_value);
-		return len;
-	} else {
-		lenient_strcat(buffer, value);
-		return strlen(value);
-	}
-}
-
-/**
- * Calculate and return the length of the formatted title.
- * If buffer is not NULL, also populate the buffer with the formatted title.
- */
-static size_t parse_title_format(struct sway_view *view, char *buffer) {
-	if (!view->title_format || strcmp(view->title_format, "%title") == 0) {
-		return append_prop(buffer, view_get_title(view));
-	}
-
-	size_t len = 0;
-	char *format = view->title_format;
-	char *next = strchr(format, '%');
-	while (next) {
-		// Copy everything up to the %
-		lenient_strncat(buffer, format, next - format);
-		len += next - format;
-		format = next;
-
-		if (strncmp(next, "%title", 6) == 0) {
-			len += append_prop(buffer, view_get_title(view));
-			format += 6;
-		} else if (strncmp(next, "%app_id", 7) == 0) {
-			len += append_prop(buffer, view_get_app_id(view));
-			format += 7;
-		} else if (strncmp(next, "%class", 6) == 0) {
-			len += append_prop(buffer, view_get_class(view));
-			format += 6;
-		} else if (strncmp(next, "%instance", 9) == 0) {
-			len += append_prop(buffer, view_get_instance(view));
-			format += 9;
-		} else if (strncmp(next, "%shell", 6) == 0) {
-			len += append_prop(buffer, view_get_shell(view));
-			format += 6;
-		} else {
-			lenient_strcat(buffer, "%");
-			++format;
-			++len;
-		}
-		next = strchr(format, '%');
-	}
-	lenient_strcat(buffer, format);
-	len += strlen(format);
-
-	return len;
-}
-
 void view_update_app_id(struct sway_view *view) {
 	const char *app_id = view_get_app_id(view);
 
@@ -1089,7 +1016,7 @@ void view_update_title(struct sway_view *view, bool force) {
 	free(view->container->title);
 	free(view->container->formatted_title);
 
-	size_t len = parse_title_format(view, NULL);
+	size_t len = parse_title_format(view->container, NULL);
 
 	if (len) {
 		char *buffer = calloc(len + 1, sizeof(char));
@@ -1097,7 +1024,7 @@ void view_update_title(struct sway_view *view, bool force) {
 			return;
 		}
 
-		parse_title_format(view, buffer);
+		parse_title_format(view->container, buffer);
 		view->container->formatted_title = buffer;
 	} else {
 		view->container->formatted_title = NULL;
@@ -1260,6 +1187,19 @@ bool view_is_transient_for(struct sway_view *child,
 		child->impl->is_transient_for(child, ancestor);
 }
 
+bool view_can_tear(struct sway_view *view) {
+	switch (view->tearing_mode) {
+	case TEARING_OVERRIDE_FALSE:
+		return false;
+	case TEARING_OVERRIDE_TRUE:
+		return true;
+	case TEARING_WINDOW_HINT:
+		return view->tearing_hint ==
+			WP_TEARING_CONTROL_V1_PRESENTATION_HINT_ASYNC;
+	}
+	return false;
+}
+
 static void send_frame_done_iterator(struct wlr_scene_buffer *scene_buffer,
 		int x, int y, void *data) {
 	struct timespec *when = data;

swaybar/bar.c

@@ -508,7 +508,7 @@ void bar_run(struct swaybar *bar) {
 	}
 #if HAVE_TRAY
 	if (bar->tray) {
-		loop_add_fd(bar->eventloop, bar->tray->fd, POLLIN, tray_in, bar->tray->bus);
+		loop_add_fd(bar->eventloop, bar->tray->fd, POLLIN, tray_in, bar);
 	}
 #endif
 	while (bar->running) {

swaybar/ipc.c

@@ -518,8 +518,7 @@ static bool handle_barconfig_update(struct swaybar *bar, const char *payload,
 #if HAVE_TRAY
 	if (oldcfg->tray_hidden && !newcfg->tray_hidden) {
 		bar->tray = create_tray(bar);
-		loop_add_fd(bar->eventloop, bar->tray->fd, POLLIN, tray_in,
-				bar->tray->bus);
+		loop_add_fd(bar->eventloop, bar->tray->fd, POLLIN, tray_in, bar);
 	} else if (bar->tray && newcfg->tray_hidden) {
 		loop_remove_fd(bar->eventloop, bar->tray->fd);
 		destroy_tray(bar->tray);

swaybar/tray/tray.c

@@ -1,4 +1,5 @@
 #include <cairo.h>
+#include <poll.h>
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
@@ -90,9 +91,16 @@ void destroy_tray(struct swaybar_tray *tray) {
 }
 
 void tray_in(int fd, short mask, void *data) {
-	sd_bus *bus = data;
+	struct swaybar *bar = data;
 	int ret;
-	while ((ret = sd_bus_process(bus, NULL)) > 0) {
+
+	if (mask & (POLLHUP | POLLERR)) {
+        sway_log(SWAY_ERROR, "D-Bus connection closed unexpectedly");
+		bar->running = false;
+		return;
+    }
+
+	while ((ret = sd_bus_process(bar->tray->bus, NULL)) > 0) {
 		// This space intentionally left blank
 	}
 	if (ret < 0) {

swaymsg/main.c

@@ -193,7 +193,7 @@ static void pretty_print_output(json_object *o) {
 	json_object_object_get_ex(o, "current_workspace", &ws);
 	json_object_object_get_ex(o, "non_desktop", &non_desktop);
 	json_object *make, *model, *serial, *scale, *scale_filter, *subpixel,
-		*transform, *max_render_time, *adaptive_sync_status;
+		*transform, *max_render_time, *adaptive_sync_status, *allow_tearing;
 	json_object_object_get_ex(o, "make", &make);
 	json_object_object_get_ex(o, "model", &model);
 	json_object_object_get_ex(o, "serial", &serial);
@@ -203,6 +203,7 @@ static void pretty_print_output(json_object *o) {
 	json_object_object_get_ex(o, "transform", &transform);
 	json_object_object_get_ex(o, "max_render_time", &max_render_time);
 	json_object_object_get_ex(o, "adaptive_sync_status", &adaptive_sync_status);
+	json_object_object_get_ex(o, "allow_tearing", &allow_tearing);
 	json_object *x, *y;
 	json_object_object_get_ex(rect, "x", &x);
 	json_object_object_get_ex(rect, "y", &y);
@@ -256,6 +257,9 @@ static void pretty_print_output(json_object *o) {
 
 		printf("  Adaptive sync: %s\n",
 			json_object_get_string(adaptive_sync_status));
+
+		printf("  Allow tearing: %s\n",
+			json_object_get_boolean(allow_tearing) ? "yes" : "no");
 	} else {
 		printf(
 			"Output %s '%s %s %s' (disabled)\n",