Bump version to 3.18.0

Update NEWS.

.gitignore

@@ -66,6 +66,8 @@ src/gtk-shell-protocol.c
 src/gtk-shell-server-protocol.h
 src/xdg-shell-protocol.c
 src/xdg-shell-server-protocol.h
+src/pointer-gestures-protocol.c
+src/pointer-gestures-server-protocol.h
 src/xserver-protocol.c
 src/xserver-server-protocol.h
 src/meta/meta-version.h

NEWS

@@ -1,3 +1,53 @@
+3.18.0
+======
+* Misc. fixes [Florian, Jonas; #753434]
+
+Contributors:
+  Jonas Ådahl, Florian Müllner
+
+Translations:
+  Rūdolfs Mazurs [lv]
+
+3.17.92
+=======
+* Don't omit the background color for backgrounds that don't fill the screen
+  [Ray; #754476]
+* Fix up key state on FocusIn when running nested [Owen; #753948]
+* Find the right DRM device instead of hardcoding card0 [Marek; #753434]
+* Scale cursor on HiDPI screens [Jonas; #744932]
+* Misc. fixes and cleanups [Lan, Jonas, Javier, Olivier; #754545, #754215,
+  #754621, #754715]
+
+Contributors:
+  Jonas Ådahl, Marek Chalupa, Olivier Fourdan, Javier Jardón, Ting-Wei Lan,
+  Ray Strode, Owen W. Taylor
+
+3.17.91
+=======
+* Send error on pointer-gesture protocol version mismatch [Jonas; #753855]
+* Misc. cleanups [Jonas; #744932]
+
+Contributors:
+  Jonas Ådahl
+
+Translations:
+  Chao-Hsiung Liao [zh_TW], Piotr Drąg [pl]
+
+3.17.90
+=======
+* Fix glitch with some fullscreen apps [Rui; #753020]
+* Fix screen update issue with NVidia driver [Aaron, Rui; #728464]
+* Only call frame callbacks for surfaces that get drawn [Adel; #739163]
+* Misc. bug fixes and cleanups [Jonas, Rui, Ting-Wei; #753222, #752753, #753237,
+  #753380, #744104, #744932]
+
+Contributors:
+  Jonas Ådahl, Adel Gadllah, Carlos Garnacho, Ting-Wei Lan, Rui Matos,
+  Florian Müllner, Aaron Plattner, Jasper St. Pierre
+
+Translations:
+  Akom Chotiphantawanon [th]
+
 3.17.4
 ======
 * nested: Allow basic configuration of dummy outputs [Jonas; #747089]

configure.ac

@@ -1,8 +1,8 @@
 AC_PREREQ(2.62)
 
 m4_define([mutter_major_version], [3])
-m4_define([mutter_minor_version], [17])
-m4_define([mutter_micro_version], [4])
+m4_define([mutter_minor_version], [18])
+m4_define([mutter_micro_version], [0])
 
 m4_define([mutter_version],
           [mutter_major_version.mutter_minor_version.mutter_micro_version])
@@ -63,7 +63,7 @@ MUTTER_PC_MODULES="
    pango >= 1.2.0
    cairo >= 1.10.0
    gsettings-desktop-schemas >= 3.15.92
-   $CLUTTER_PACKAGE >= 1.21.3
+   $CLUTTER_PACKAGE >= 1.23.4
    cogl-1.0 >= 1.17.1
    upower-glib >= 0.99.0
    gnome-desktop-3.0
@@ -319,6 +319,11 @@ if test "x$enable_debug" = "xyes"; then
 	CFLAGS="$CFLAGS -g -O"
 fi
 
+AC_CHECK_DECL([GL_EXT_x11_sync_object],
+              [],
+              [AC_MSG_ERROR([GL_EXT_x11_sync_object definition not found, please update your GL headers])],
+              [#include <GL/glx.h>])
+
 #### Warnings (last since -Werror can disturb other tests)
 
 # Stay command-line compatible with the gnome-common configure option. Here

po/pl.po

@@ -15,8 +15,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: mutter\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2015-03-05 00:23+0100\n"
-"PO-Revision-Date: 2015-03-05 00:24+0100\n"
+"POT-Creation-Date: 2015-08-26 18:49+0200\n"
+"PO-Revision-Date: 2015-08-26 18:50+0200\n"
 "Last-Translator: Piotr Drąg <piotrdrag@gmail.com>\n"
 "Language-Team: Polish <gnomepl@aviary.pl>\n"
 "Language: pl\n"
@@ -285,9 +285,9 @@ msgid ""
 "\"Windows key\" on PC hardware. It's expected that this binding either the "
 "default or set to the empty string."
 msgstr ""
-"Ten klawisz inicjuje tryb \"overlay\", który jest połączeniem podglądu okien "
-"i systemu uruchamiania programów. Domyślnie jest przeznaczony do powiązania "
-"z klawiszem \"Windows\" na komputerach typu PC. Ustawienie tego powiązania "
+"Ten klawisz inicjuje tryb „overlay”, który jest połączeniem podglądu okien i "
+"systemu uruchamiania programów. Domyślnie jest przeznaczony do powiązania z "
+"klawiszem „Windows” na komputerach typu PC. Ustawienie tego powiązania "
 "powinno być domyślne lub puste."
 
 #: ../data/org.gnome.mutter.gschema.xml.in.h:3
@@ -300,9 +300,9 @@ msgid ""
 "attached to the titlebar of the parent window and are moved together with "
 "the parent window."
 msgstr ""
-"Jeśli wynosi \"true\", to modalne okna dialogowe pojawiają się dołączone do "
-"paska tytułowego okna nadrzędnego zamiast posiadać oddzielne paski tytułowe "
-"i są przenoszone razem z nim."
+"Jeśli wynosi wartość „true”, to modalne okna dialogowe pojawiają się "
+"dołączone do paska tytułowego okna nadrzędnego zamiast posiadać oddzielne "
+"paski tytułowe i są przenoszone razem z nim."
 
 #: ../data/org.gnome.mutter.gschema.xml.in.h:5
 msgid "Enable edge tiling when dropping windows on screen edges"
@@ -332,7 +332,7 @@ msgid ""
 "gnome.desktop.wm.preferences)."
 msgstr ""
 "Określa, czy obszary robocze są zarządzane dynamicznie, czy istnieje "
-"statyczna liczba obszarów (określona przez klucz \"num-workspaces\" w org."
+"statyczna liczba obszarów (określona przez klucz „num-workspaces” w org."
 "gnome.desktop.wm.preferences)."
 
 #: ../data/org.gnome.mutter.gschema.xml.in.h:9
@@ -369,9 +369,9 @@ msgid ""
 "the focus will not be changed immediately when entering a window, but only "
 "after the pointer stops moving."
 msgstr ""
-"Jeśli jest ustawione na wartość \"true\", a tryb aktywności to \"sloppy\" "
-"lub \"mouse\", to aktywność nie będzie zmieniana od razu po przejściu do "
-"okna, ale dopiero po zatrzymaniu ruchu kursora."
+"Jeśli jest ustawione na wartość „true”, a tryb aktywności to „sloppy” lub "
+"„mouse”, to aktywność nie będzie zmieniana od razu po przejściu do okna, ale "
+"dopiero po zatrzymaniu ruchu kursora."
 
 #: ../data/org.gnome.mutter.gschema.xml.in.h:15
 msgid "Draggable border width"
@@ -409,7 +409,7 @@ msgid ""
 "When true, the new windows will always be put in the center of the active "
 "screen of the monitor."
 msgstr ""
-"Jeśli wynosi \"true\", to nowe okna będą zawsze umieszczane na środku "
+"Jeśli wynosi wartość „true”, to nowe okna będą zawsze umieszczane na środku "
 "aktywnego ekranu monitora."
 
 #: ../data/org.gnome.mutter.gschema.xml.in.h:21
@@ -468,22 +468,22 @@ msgstr "Przełączenie na 11. konsolę wirtualną"
 msgid "Switch to VT 12"
 msgstr "Przełączenie na 12. konsolę wirtualną"
 
-#: ../src/backends/meta-monitor-manager.c:364
+#: ../src/backends/meta-monitor-manager.c:500
 msgid "Built-in display"
 msgstr "Wbudowany ekran"
 
-#: ../src/backends/meta-monitor-manager.c:391
+#: ../src/backends/meta-monitor-manager.c:526
 msgid "Unknown"
 msgstr "Nieznany"
 
-#: ../src/backends/meta-monitor-manager.c:393
+#: ../src/backends/meta-monitor-manager.c:528
 msgid "Unknown Display"
 msgstr "Nieznany ekran"
 
 #. TRANSLATORS: this is a monitor vendor name, followed by a
 #. * size in inches, like 'Dell 15"'
 #.
-#: ../src/backends/meta-monitor-manager.c:401
+#: ../src/backends/meta-monitor-manager.c:536
 #, c-format
 msgid "%s %s"
 msgstr "%s %s"
@@ -496,7 +496,7 @@ msgid ""
 "Another compositing manager is already running on screen %i on display \"%s"
 "\"."
 msgstr ""
-"Inny menedżer składania jest już uruchomiony na podekranie %i ekranu \"%s\"."
+"Inny menedżer składania jest już uruchomiony na podekranie %i ekranu „%s”."
 
 #: ../src/core/bell.c:185
 msgid "Bell event"
@@ -505,7 +505,7 @@ msgstr "Zdarzenie sygnału dźwiękowego"
 #: ../src/core/delete.c:127
 #, c-format
 msgid "“%s” is not responding."
-msgstr "Okno \"%s\" nie odpowiada."
+msgstr "Okno „%s” nie odpowiada."
 
 #: ../src/core/delete.c:129
 msgid "Application is not responding."
@@ -525,11 +525,10 @@ msgstr "_Czekaj"
 msgid "_Force Quit"
 msgstr "_Zakończ"
 
-#: ../src/core/display.c:562
+#: ../src/core/display.c:563
 #, c-format
 msgid "Failed to open X Window System display '%s'\n"
-msgstr ""
-"Otwarcie połączenia z ekranem \"%s\" systemu X Window się nie powiodło\n"
+msgstr "Otwarcie połączenia z ekranem „%s” systemu X Window się nie powiodło\n"
 
 #: ../src/core/main.c:176
 msgid "Disable connection to session manager"
@@ -573,7 +572,7 @@ msgid ""
 "PARTICULAR PURPOSE.\n"
 msgstr ""
 "mutter %s\n"
-"Copyright (C) 2001-%d Havoc Pennington, Red Hat, Inc., oraz inni\n"
+"Copyright (C) 2001—%d Havoc Pennington, Red Hat, Inc., oraz inni\n"
 "Niniejszy program jest wolnym oprogramowaniem, aby poznać warunki, pod\n"
 "jakimi dopuszczalne jest kopiowanie programu, zajrzyj do jego źródeł.\n"
 "Na program nie udziela się ŻADNYCH GWARANCJI, nawet domyślnej gwarancji\n"
@@ -598,13 +597,13 @@ msgid ""
 "Display \"%s\" already has a window manager; try using the --replace option "
 "to replace the current window manager."
 msgstr ""
-"Na ekranie \"%s\" działa już menedżer okien. Aby zastąpić działającego "
+"Na ekranie „%s” działa już menedżer okien. Aby zastąpić działającego "
 "menedżera okien, proszę spróbować użyć opcji --replace."
 
 #: ../src/core/screen.c:607
 #, c-format
 msgid "Screen %d on display '%s' is invalid\n"
-msgstr "Podekran %d ekranu \"%s\" jest nieprawidłowy\n"
+msgstr "Podekran %d ekranu „%s” jest nieprawidłowy\n"
 
 #: ../src/core/util.c:118
 msgid "Mutter was compiled without support for verbose mode\n"
@@ -616,7 +615,7 @@ msgid ""
 "These windows do not support &quot;save current setup&quot; and will have to "
 "be restarted manually next time you log in."
 msgstr ""
-"Te okna nie obsługują opcji zapisu obecnego stanu (\"save current setup\"), "
+"Te okna nie obsługują opcji zapisu obecnego stanu („save current setup”), "
 "więc przy następnym zalogowaniu będą musiały zostać uruchomione ręcznie."
 
 #: ../src/x11/window-props.c:549

po/zh_TW.po

@@ -10,7 +10,7 @@ msgstr ""
 "Project-Id-Version: metacity 3.3.4\n"
 "Report-Msgid-Bugs-To: http://bugzilla.gnome.org/enter_bug.cgi?"
 "product=mutter&keywords=I18N+L10N&component=general\n"
-"POT-Creation-Date: 2015-02-20 23:22+0000\n"
+"POT-Creation-Date: 2015-07-21 10:52+0000\n"
 "PO-Revision-Date: 2015-02-21 16:33+0800\n"
 "Last-Translator: Chao-Hsiung Liao <j_h_liau@yahoo.com.tw>\n"
 "Language-Team: Chinese (Taiwan) <zh-l10n@lists.linux.org.tw>\n"
@@ -439,22 +439,22 @@ msgstr "切換至 VT 11"
 msgid "Switch to VT 12"
 msgstr "切換至 VT 12"
 
-#: ../src/backends/meta-monitor-manager.c:364
+#: ../src/backends/meta-monitor-manager.c:500
 msgid "Built-in display"
 msgstr "內建顯示"
 
-#: ../src/backends/meta-monitor-manager.c:391
+#: ../src/backends/meta-monitor-manager.c:526
 msgid "Unknown"
 msgstr "不明"
 
-#: ../src/backends/meta-monitor-manager.c:393
+#: ../src/backends/meta-monitor-manager.c:528
 msgid "Unknown Display"
 msgstr "不明的顯示器"
 
 #. TRANSLATORS: this is a monitor vendor name, followed by a
 #. * size in inches, like 'Dell 15"'
 #.
-#: ../src/backends/meta-monitor-manager.c:401
+#: ../src/backends/meta-monitor-manager.c:536
 #, c-format
 msgid "%s %s"
 msgstr "%s %s"
@@ -462,7 +462,7 @@ msgstr "%s %s"
 # FIXME: I'm still unclear about the meaning of XGetSelectionOwner -- Abel
 #. This probably means that a non-WM compositor like xcompmgr is running;
 #. * we have no way to get it to exit
-#: ../src/compositor/compositor.c:456
+#: ../src/compositor/compositor.c:451
 #, c-format
 msgid ""
 "Another compositing manager is already running on screen %i on display \"%s"
@@ -496,14 +496,14 @@ msgstr "等待(_W)"
 msgid "_Force Quit"
 msgstr "強制結束(_F)"
 
-#: ../src/core/display.c:562
+#: ../src/core/display.c:563
 #, c-format
 msgid "Failed to open X Window System display '%s'\n"
 msgstr "無法開啟 X Window 畫面‘%s’\n"
 
 #: ../src/core/main.c:176
 msgid "Disable connection to session manager"
-msgstr "停用到作業階段管理程式的連線"
+msgstr "停用到作業階段管理員的連線"
 
 #: ../src/core/main.c:182
 msgid "Replace the running window manager"
@@ -1053,9 +1053,9 @@ msgstr "%s（在 %s）"
 #~ msgid ""
 #~ "\"%s\" found in configuration database is not a valid value for mouse "
 #~ "button modifier\n"
-#~ msgstr "組態資料庫中的“%s”設定值不是有效的滑鼠按鈕修改功能鍵\n"
+#~ msgstr "設定資料庫中的“%s”設定值不是有效的滑鼠按鈕修改功能鍵\n"
 
 #~ msgid ""
 #~ "\"%s\" found in configuration database is not a valid value for "
 #~ "keybinding \"%s\"\n"
-#~ msgstr "組態資料庫中的“%s”不是按鍵組合“%s”的有效設定值\n"
+#~ msgstr "設定資料庫中的“%s”不是按鍵組合“%s”的有效設定值\n"

src/Makefile.am

@@ -45,6 +45,8 @@ mutter_built_sources = \
 
 if HAVE_WAYLAND
 mutter_built_sources += \
+	pointer-gestures-protocol.c		\
+	pointer-gestures-server-protocol.h	\
 	gtk-shell-protocol.c			\
 	gtk-shell-server-protocol.h		\
 	xdg-shell-protocol.c			\
@@ -53,6 +55,7 @@ mutter_built_sources += \
 endif
 
 wayland_protocols =				\
+	wayland/protocol/pointer-gestures.xml	\
 	wayland/protocol/gtk-shell.xml		\
 	wayland/protocol/xdg-shell.xml		\
 	$(NULL)
@@ -65,7 +68,6 @@ libmutter_la_SOURCES =				\
 	backends/meta-barrier-private.h		\
 	backends/meta-cursor.c			\
 	backends/meta-cursor.h			\
-	backends/meta-cursor-private.h		\
 	backends/meta-cursor-tracker.c		\
 	backends/meta-cursor-tracker-private.h	\
 	backends/meta-cursor-renderer.c		\
@@ -94,6 +96,8 @@ libmutter_la_SOURCES =				\
 	backends/x11/meta-barrier-x11.h			\
 	backends/x11/meta-cursor-renderer-x11.c		\
 	backends/x11/meta-cursor-renderer-x11.h		\
+	backends/x11/nested/meta-cursor-renderer-x11-nested.c		\
+	backends/x11/nested/meta-cursor-renderer-x11-nested.h		\
 	backends/x11/meta-idle-monitor-xsync.c		\
 	backends/x11/meta-idle-monitor-xsync.h		\
 	backends/x11/meta-input-settings-x11.c		\
@@ -138,6 +142,8 @@ libmutter_la_SOURCES =				\
 	compositor/meta-surface-actor.h		\
 	compositor/meta-surface-actor-x11.c	\
 	compositor/meta-surface-actor-x11.h	\
+	compositor/meta-sync-ring.c		\
+	compositor/meta-sync-ring.h		\
 	compositor/meta-texture-rectangle.c	\
 	compositor/meta-texture-rectangle.h	\
 	compositor/meta-texture-tower.c		\
@@ -250,6 +256,12 @@ libmutter_la_SOURCES +=				\
 	wayland/meta-wayland-data-device.c      \
 	wayland/meta-wayland-data-device.h      \
 	wayland/meta-wayland-data-device-private.h	\
+	wayland/meta-wayland-pointer-gestures.c	\
+	wayland/meta-wayland-pointer-gestures.h	\
+	wayland/meta-wayland-pointer-gesture-swipe.c	\
+	wayland/meta-wayland-pointer-gesture-swipe.h	\
+	wayland/meta-wayland-pointer-gesture-pinch.c	\
+	wayland/meta-wayland-pointer-gesture-pinch.h	\
 	wayland/meta-wayland-keyboard.c		\
 	wayland/meta-wayland-keyboard.h		\
 	wayland/meta-wayland-pointer.c		\

src/backends/meta-cursor-private.h

@@ -1,66 +0,0 @@
-/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
-
-/*
- * Copyright 2013 Red Hat, Inc.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
- *
- * Author: Giovanni Campagna <gcampagn@redhat.com>
- */
-
-#ifndef META_CURSOR_PRIVATE_H
-#define META_CURSOR_PRIVATE_H
-
-#include "meta-cursor.h"
-
-#include <X11/Xcursor/Xcursor.h>
-#include <cogl/cogl.h>
-
-#ifdef HAVE_NATIVE_BACKEND
-#include <gbm.h>
-#endif
-
-typedef struct {
-  CoglTexture2D *texture;
-  int hot_x, hot_y;
-
-#ifdef HAVE_NATIVE_BACKEND
-  struct gbm_bo *bo;
-#endif
-} MetaCursorImage;
-
-struct _MetaCursorReference {
-  int ref_count;
-
-  int current_frame;
-  XcursorImages *xcursor_images;
-  MetaCursor cursor;
-  MetaCursorImage image;
-};
-
-CoglTexture *meta_cursor_reference_get_cogl_texture (MetaCursorReference *cursor,
-                                                     int                 *hot_x,
-                                                     int                 *hot_y);
-
-#ifdef HAVE_NATIVE_BACKEND
-struct gbm_bo *meta_cursor_reference_get_gbm_bo (MetaCursorReference *cursor,
-                                                 int                 *hot_x,
-                                                 int                 *hot_y);
-#endif
-
-gboolean meta_cursor_reference_is_animated            (MetaCursorReference *self);
-void     meta_cursor_reference_tick_frame             (MetaCursorReference *self);
-guint    meta_cursor_reference_get_current_frame_time (MetaCursorReference *self);
-
-#endif /* META_CURSOR_PRIVATE_H */

src/backends/meta-cursor-renderer.c

@@ -25,7 +25,6 @@
 #include "config.h"
 
 #include "meta-cursor-renderer.h"
-#include "meta-cursor-private.h"
 
 #include <meta/meta-backend.h>
 #include <meta/util.h>
@@ -38,9 +37,8 @@
 struct _MetaCursorRendererPrivate
 {
   int current_x, current_y;
-  MetaRectangle current_rect;
 
-  MetaCursorReference *displayed_cursor;
+  MetaCursorSprite *displayed_cursor;
   gboolean handled_by_backend;
 };
 typedef struct _MetaCursorRendererPrivate MetaCursorRendererPrivate;
@@ -48,27 +46,33 @@ typedef struct _MetaCursorRendererPrivate MetaCursorRendererPrivate;
 G_DEFINE_TYPE_WITH_PRIVATE (MetaCursorRenderer, meta_cursor_renderer, G_TYPE_OBJECT);
 
 static void
-queue_redraw (MetaCursorRenderer *renderer)
+queue_redraw (MetaCursorRenderer *renderer,
+              MetaCursorSprite   *cursor_sprite)
 {
   MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
   MetaBackend *backend = meta_get_backend ();
   ClutterActor *stage = meta_backend_get_stage (backend);
   CoglTexture *texture;
+  MetaRectangle rect = { 0 };
+
+  if (cursor_sprite)
+    rect = meta_cursor_renderer_calculate_rect (renderer, cursor_sprite);
 
   /* During early initialization, we can have no stage */
   if (!stage)
     return;
 
-  if (priv->displayed_cursor && !priv->handled_by_backend)
-    texture = meta_cursor_reference_get_cogl_texture (priv->displayed_cursor, NULL, NULL);
+  if (cursor_sprite && !priv->handled_by_backend)
+    texture = meta_cursor_sprite_get_cogl_texture (cursor_sprite);
   else
     texture = NULL;
 
-  meta_stage_set_cursor (META_STAGE (stage), texture, &priv->current_rect);
+  meta_stage_set_cursor (META_STAGE (stage), texture, &rect);
 }
 
 static gboolean
-meta_cursor_renderer_real_update_cursor (MetaCursorRenderer *renderer)
+meta_cursor_renderer_real_update_cursor (MetaCursorRenderer *renderer,
+                                         MetaCursorSprite   *cursor_sprite)
 {
   return FALSE;
 }
@@ -84,34 +88,50 @@ meta_cursor_renderer_init (MetaCursorRenderer *renderer)
 {
 }
 
+MetaRectangle
+meta_cursor_renderer_calculate_rect (MetaCursorRenderer *renderer,
+                                     MetaCursorSprite   *cursor_sprite)
+{
+  MetaCursorRendererPrivate *priv =
+    meta_cursor_renderer_get_instance_private (renderer);
+  CoglTexture *texture;
+  int hot_x, hot_y;
+  int width, height;
+  float texture_scale;
+
+  texture = meta_cursor_sprite_get_cogl_texture (cursor_sprite);
+  if (!texture)
+    return (MetaRectangle) { 0 };
+
+  meta_cursor_sprite_get_hotspot (cursor_sprite, &hot_x, &hot_y);
+  texture_scale = meta_cursor_sprite_get_texture_scale (cursor_sprite);
+  width = cogl_texture_get_width (texture);
+  height = cogl_texture_get_height (texture);
+
+  return (MetaRectangle) {
+    .x = (int)roundf (priv->current_x - (hot_x * texture_scale)),
+    .y = (int)roundf (priv->current_y - (hot_y * texture_scale)),
+    .width = (int)roundf (width * texture_scale),
+    .height = (int)roundf (height * texture_scale),
+  };
+}
+
 static void
-update_cursor (MetaCursorRenderer *renderer)
+update_cursor (MetaCursorRenderer *renderer,
+               MetaCursorSprite   *cursor_sprite)
 {
   MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
   gboolean handled_by_backend;
   gboolean should_redraw = FALSE;
 
-  if (priv->displayed_cursor)
-    {
-      CoglTexture *texture;
-      int hot_x, hot_y;
+  if (cursor_sprite)
+    meta_cursor_sprite_prepare_at (cursor_sprite,
+                                   priv->current_x,
+                                   priv->current_y);
 
-      texture = meta_cursor_reference_get_cogl_texture (priv->displayed_cursor, &hot_x, &hot_y);
-
-      priv->current_rect.x = priv->current_x - hot_x;
-      priv->current_rect.y = priv->current_y - hot_y;
-      priv->current_rect.width = cogl_texture_get_width (COGL_TEXTURE (texture));
-      priv->current_rect.height = cogl_texture_get_height (COGL_TEXTURE (texture));
-    }
-  else
-    {
-      priv->current_rect.x = 0;
-      priv->current_rect.y = 0;
-      priv->current_rect.width = 0;
-      priv->current_rect.height = 0;
-    }
-
-  handled_by_backend = META_CURSOR_RENDERER_GET_CLASS (renderer)->update_cursor (renderer);
+  handled_by_backend =
+    META_CURSOR_RENDERER_GET_CLASS (renderer)->update_cursor (renderer,
+                                                              cursor_sprite);
   if (handled_by_backend != priv->handled_by_backend)
     {
       priv->handled_by_backend = handled_by_backend;
@@ -122,7 +142,7 @@ update_cursor (MetaCursorRenderer *renderer)
     should_redraw = TRUE;
 
   if (should_redraw)
-    queue_redraw (renderer);
+    queue_redraw (renderer, cursor_sprite);
 }
 
 MetaCursorRenderer *
@@ -132,23 +152,25 @@ meta_cursor_renderer_new (void)
 }
 
 void
-meta_cursor_renderer_set_cursor (MetaCursorRenderer  *renderer,
-                                 MetaCursorReference *cursor)
+meta_cursor_renderer_set_cursor (MetaCursorRenderer *renderer,
+                                 MetaCursorSprite   *cursor_sprite)
 {
   MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
 
-  if (priv->displayed_cursor == cursor)
+  if (priv->displayed_cursor == cursor_sprite)
     return;
+  priv->displayed_cursor = cursor_sprite;
 
-  priv->displayed_cursor = cursor;
-  update_cursor (renderer);
+  update_cursor (renderer, cursor_sprite);
 }
 
 void
 meta_cursor_renderer_force_update (MetaCursorRenderer *renderer)
 {
-  update_cursor (renderer);
-  queue_redraw (renderer);
+  MetaCursorRendererPrivate *priv =
+    meta_cursor_renderer_get_instance_private (renderer);
+
+  update_cursor (renderer, priv->displayed_cursor);
 }
 
 void
@@ -162,10 +184,10 @@ meta_cursor_renderer_set_position (MetaCursorRenderer *renderer,
   priv->current_x = x;
   priv->current_y = y;
 
-  update_cursor (renderer);
+  update_cursor (renderer, priv->displayed_cursor);
 }
 
-MetaCursorReference *
+MetaCursorSprite *
 meta_cursor_renderer_get_cursor (MetaCursorRenderer *renderer)
 {
   MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
@@ -173,10 +195,27 @@ meta_cursor_renderer_get_cursor (MetaCursorRenderer *renderer)
   return priv->displayed_cursor;
 }
 
-const MetaRectangle *
-meta_cursor_renderer_get_rect (MetaCursorRenderer *renderer)
+#ifdef HAVE_WAYLAND
+void
+meta_cursor_renderer_realize_cursor_from_wl_buffer (MetaCursorRenderer *renderer,
+                                                    MetaCursorSprite   *cursor_sprite,
+                                                    struct wl_resource *buffer)
 {
-  MetaCursorRendererPrivate *priv = meta_cursor_renderer_get_instance_private (renderer);
 
-  return &priv->current_rect;
+  MetaCursorRendererClass *renderer_class = META_CURSOR_RENDERER_GET_CLASS (renderer);
+
+  if (renderer_class->realize_cursor_from_wl_buffer)
+    renderer_class->realize_cursor_from_wl_buffer (renderer, cursor_sprite, buffer);
+}
+#endif
+
+void
+meta_cursor_renderer_realize_cursor_from_xcursor (MetaCursorRenderer *renderer,
+                                                  MetaCursorSprite   *cursor_sprite,
+                                                  XcursorImage       *xc_image)
+{
+  MetaCursorRendererClass *renderer_class = META_CURSOR_RENDERER_GET_CLASS (renderer);
+
+  if (renderer_class->realize_cursor_from_xcursor)
+    renderer_class->realize_cursor_from_xcursor (renderer, cursor_sprite, xc_image);
 }

src/backends/meta-cursor-renderer.h

@@ -26,44 +26,58 @@
 #define META_CURSOR_RENDERER_H
 
 #include <glib-object.h>
+#include <X11/Xcursor/Xcursor.h>
+#ifdef HAVE_WAYLAND
+#include <wayland-server.h>
+#endif
 
 #include <meta/screen.h>
 #include "meta-cursor.h"
 
-#define META_TYPE_CURSOR_RENDERER            (meta_cursor_renderer_get_type ())
-#define META_CURSOR_RENDERER(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), META_TYPE_CURSOR_RENDERER, MetaCursorRenderer))
-#define META_CURSOR_RENDERER_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  META_TYPE_CURSOR_RENDERER, MetaCursorRendererClass))
-#define META_IS_CURSOR_RENDERER(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), META_TYPE_CURSOR_RENDERER))
-#define META_IS_CURSOR_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  META_TYPE_CURSOR_RENDERER))
-#define META_CURSOR_RENDERER_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  META_TYPE_CURSOR_RENDERER, MetaCursorRendererClass))
-
-typedef struct _MetaCursorRenderer        MetaCursorRenderer;
-typedef struct _MetaCursorRendererClass   MetaCursorRendererClass;
-
-struct _MetaCursorRenderer
-{
-  GObject parent;
-};
+#define META_TYPE_CURSOR_RENDERER (meta_cursor_renderer_get_type ())
+G_DECLARE_DERIVABLE_TYPE (MetaCursorRenderer, meta_cursor_renderer,
+                          META, CURSOR_RENDERER, GObject);
 
 struct _MetaCursorRendererClass
 {
   GObjectClass parent_class;
 
-  gboolean (* update_cursor) (MetaCursorRenderer *renderer);
+  gboolean (* update_cursor) (MetaCursorRenderer *renderer,
+                              MetaCursorSprite   *cursor_sprite);
+#ifdef HAVE_WAYLAND
+  void (* realize_cursor_from_wl_buffer) (MetaCursorRenderer *renderer,
+                                          MetaCursorSprite *cursor_sprite,
+                                          struct wl_resource *buffer);
+#endif
+  void (* realize_cursor_from_xcursor) (MetaCursorRenderer *renderer,
+                                        MetaCursorSprite *cursor_sprite,
+                                        XcursorImage *xc_image);
 };
 
 GType meta_cursor_renderer_get_type (void) G_GNUC_CONST;
 
 MetaCursorRenderer * meta_cursor_renderer_new (void);
 
-void meta_cursor_renderer_set_cursor (MetaCursorRenderer  *renderer,
-                                      MetaCursorReference *cursor);
+void meta_cursor_renderer_set_cursor (MetaCursorRenderer *renderer,
+                                      MetaCursorSprite   *cursor_sprite);
 
 void meta_cursor_renderer_set_position (MetaCursorRenderer *renderer,
                                         int x, int y);
 void meta_cursor_renderer_force_update (MetaCursorRenderer *renderer);
 
-MetaCursorReference * meta_cursor_renderer_get_cursor (MetaCursorRenderer *renderer);
-const MetaRectangle * meta_cursor_renderer_get_rect (MetaCursorRenderer *renderer);
+MetaCursorSprite * meta_cursor_renderer_get_cursor (MetaCursorRenderer *renderer);
+
+MetaRectangle meta_cursor_renderer_calculate_rect (MetaCursorRenderer *renderer,
+                                                   MetaCursorSprite   *cursor_sprite);
+
+#ifdef HAVE_WAYLAND
+void meta_cursor_renderer_realize_cursor_from_wl_buffer (MetaCursorRenderer *renderer,
+                                                         MetaCursorSprite   *cursor_sprite,
+                                                         struct wl_resource *buffer);
+#endif
+
+void meta_cursor_renderer_realize_cursor_from_xcursor (MetaCursorRenderer *renderer,
+                                                       MetaCursorSprite   *cursor_sprite,
+                                                       XcursorImage       *xc_image);
 
 #endif /* META_CURSOR_RENDERER_H */

src/backends/meta-cursor-tracker-private.h

@@ -34,7 +34,7 @@ struct _MetaCursorTracker {
 
   gboolean is_showing;
 
-  MetaCursorReference *displayed_cursor;
+  MetaCursorSprite *displayed_cursor;
 
   /* Wayland clients can set a NULL buffer as their cursor
    * explicitly, which means that we shouldn't display anything.
@@ -42,12 +42,12 @@ struct _MetaCursorTracker {
    * determine an unset window cursor; we need an extra boolean.
    */
   gboolean has_window_cursor;
-  MetaCursorReference *window_cursor;
+  MetaCursorSprite *window_cursor;
 
-  MetaCursorReference *root_cursor;
+  MetaCursorSprite *root_cursor;
 
   /* The cursor from the X11 server. */
-  MetaCursorReference *xfixes_cursor;
+  MetaCursorSprite *xfixes_cursor;
 };
 
 struct _MetaCursorTrackerClass {
@@ -57,16 +57,16 @@ struct _MetaCursorTrackerClass {
 gboolean meta_cursor_tracker_handle_xevent (MetaCursorTracker *tracker,
 					    XEvent            *xevent);
 
-void     meta_cursor_tracker_set_window_cursor   (MetaCursorTracker   *tracker,
-                                                  MetaCursorReference *cursor);
-void     meta_cursor_tracker_unset_window_cursor (MetaCursorTracker   *tracker);
-void     meta_cursor_tracker_set_root_cursor     (MetaCursorTracker   *tracker,
-                                                  MetaCursorReference *cursor);
+void     meta_cursor_tracker_set_window_cursor   (MetaCursorTracker *tracker,
+                                                  MetaCursorSprite  *cursor_sprite);
+void     meta_cursor_tracker_unset_window_cursor (MetaCursorTracker *tracker);
+void     meta_cursor_tracker_set_root_cursor     (MetaCursorTracker *tracker,
+                                                  MetaCursorSprite  *cursor_sprite);
 
 void     meta_cursor_tracker_update_position (MetaCursorTracker *tracker,
 					      int                new_x,
 					      int                new_y);
 
-MetaCursorReference * meta_cursor_tracker_get_displayed_cursor (MetaCursorTracker *tracker);
+MetaCursorSprite * meta_cursor_tracker_get_displayed_cursor (MetaCursorTracker *tracker);
 
 #endif

src/backends/meta-cursor-tracker.c

@@ -43,7 +43,6 @@
 #include <X11/extensions/Xfixes.h>
 
 #include "meta-backend-private.h"
-#include "meta-cursor-private.h"
 
 G_DEFINE_TYPE (MetaCursorTracker, meta_cursor_tracker, G_TYPE_OBJECT);
 
@@ -54,7 +53,7 @@ enum {
 
 static guint signals[LAST_SIGNAL];
 
-static MetaCursorReference *
+static MetaCursorSprite *
 get_displayed_cursor (MetaCursorTracker *tracker)
 {
   MetaDisplay *display = meta_get_display ();
@@ -80,14 +79,14 @@ update_displayed_cursor (MetaCursorTracker *tracker)
 static void
 sync_cursor (MetaCursorTracker *tracker)
 {
-  MetaCursorReference *displayed_cursor = get_displayed_cursor (tracker);
+  MetaCursorSprite *displayed_cursor = get_displayed_cursor (tracker);
 
   if (tracker->displayed_cursor == displayed_cursor)
     return;
 
-  g_clear_pointer (&tracker->displayed_cursor, meta_cursor_reference_unref);
+  g_clear_object (&tracker->displayed_cursor);
   if (displayed_cursor)
-    tracker->displayed_cursor = meta_cursor_reference_ref (displayed_cursor);
+    tracker->displayed_cursor = g_object_ref (displayed_cursor);
 
   update_displayed_cursor (tracker);
   g_signal_emit (tracker, signals[CURSOR_CHANGED], 0);
@@ -108,9 +107,9 @@ meta_cursor_tracker_finalize (GObject *object)
   MetaCursorTracker *self = META_CURSOR_TRACKER (object);
 
   if (self->displayed_cursor)
-    meta_cursor_reference_unref (self->displayed_cursor);
+    g_object_unref (self->displayed_cursor);
   if (self->root_cursor)
-    meta_cursor_reference_unref (self->root_cursor);
+    g_object_unref (self->root_cursor);
 
   G_OBJECT_CLASS (meta_cursor_tracker_parent_class)->finalize (object);
 }
@@ -156,13 +155,13 @@ meta_cursor_tracker_get_for_screen (MetaScreen *screen)
 }
 
 static void
-set_window_cursor (MetaCursorTracker   *tracker,
-                   gboolean             has_cursor,
-                   MetaCursorReference *cursor)
+set_window_cursor (MetaCursorTracker *tracker,
+                   gboolean           has_cursor,
+                   MetaCursorSprite  *cursor_sprite)
 {
-  g_clear_pointer (&tracker->window_cursor, meta_cursor_reference_unref);
-  if (cursor)
-    tracker->window_cursor = meta_cursor_reference_ref (cursor);
+  g_clear_object (&tracker->window_cursor);
+  if (cursor_sprite)
+    tracker->window_cursor = g_object_ref (cursor_sprite);
   tracker->has_window_cursor = has_cursor;
   sync_cursor (tracker);
 }
@@ -184,28 +183,12 @@ meta_cursor_tracker_handle_xevent (MetaCursorTracker *tracker,
   if (notify_event->subtype != XFixesDisplayCursorNotify)
     return FALSE;
 
-  g_clear_pointer (&tracker->xfixes_cursor, meta_cursor_reference_unref);
+  g_clear_object (&tracker->xfixes_cursor);
   g_signal_emit (tracker, signals[CURSOR_CHANGED], 0);
 
   return TRUE;
 }
 
-static MetaCursorReference *
-meta_cursor_reference_take_texture (CoglTexture2D *texture,
-                                    int            hot_x,
-                                    int            hot_y)
-{
-  MetaCursorReference *self;
-
-  self = g_slice_new0 (MetaCursorReference);
-  self->ref_count = 1;
-  self->image.texture = texture;
-  self->image.hot_x = hot_x;
-  self->image.hot_y = hot_y;
-
-  return self;
-}
-
 static void
 ensure_xfixes_cursor (MetaCursorTracker *tracker)
 {
@@ -263,10 +246,13 @@ ensure_xfixes_cursor (MetaCursorTracker *tracker)
 
   if (sprite != NULL)
     {
-      MetaCursorReference *cursor = meta_cursor_reference_take_texture (sprite,
-                                                                        cursor_image->xhot,
-                                                                        cursor_image->yhot);
-      tracker->xfixes_cursor = cursor;
+      MetaCursorSprite *cursor_sprite = meta_cursor_sprite_new ();
+      meta_cursor_sprite_set_texture (cursor_sprite,
+                                      sprite,
+                                      cursor_image->xhot,
+                                      cursor_image->yhot);
+      cogl_object_unref (sprite);
+      tracker->xfixes_cursor = cursor_sprite;
     }
   XFree (cursor_image);
 }
@@ -279,22 +265,22 @@ ensure_xfixes_cursor (MetaCursorTracker *tracker)
 CoglTexture *
 meta_cursor_tracker_get_sprite (MetaCursorTracker *tracker)
 {
-  MetaCursorReference *cursor;
+  MetaCursorSprite *cursor_sprite;
 
   g_return_val_if_fail (META_IS_CURSOR_TRACKER (tracker), NULL);
 
   if (meta_is_wayland_compositor ())
     {
-      cursor = tracker->displayed_cursor;
+      cursor_sprite = tracker->displayed_cursor;
     }
   else
     {
       ensure_xfixes_cursor (tracker);
-      cursor = tracker->xfixes_cursor;
+      cursor_sprite = tracker->xfixes_cursor;
     }
 
-  if (cursor)
-    return meta_cursor_reference_get_cogl_texture (cursor, NULL, NULL);
+  if (cursor_sprite)
+    return meta_cursor_sprite_get_cogl_texture (cursor_sprite);
   else
     return NULL;
 }
@@ -311,22 +297,22 @@ meta_cursor_tracker_get_hot (MetaCursorTracker *tracker,
                              int               *x,
                              int               *y)
 {
-  MetaCursorReference *cursor;
+  MetaCursorSprite *cursor_sprite;
 
   g_return_if_fail (META_IS_CURSOR_TRACKER (tracker));
 
   if (meta_is_wayland_compositor ())
     {
-      cursor = tracker->displayed_cursor;
+      cursor_sprite = tracker->displayed_cursor;
     }
   else
     {
       ensure_xfixes_cursor (tracker);
-      cursor = tracker->xfixes_cursor;
+      cursor_sprite = tracker->xfixes_cursor;
     }
 
-  if (cursor)
-    meta_cursor_reference_get_cogl_texture (cursor, x, y);
+  if (cursor_sprite)
+    meta_cursor_sprite_get_hotspot (cursor_sprite, x, y);
   else
     {
       if (x)
@@ -337,10 +323,10 @@ meta_cursor_tracker_get_hot (MetaCursorTracker *tracker,
 }
 
 void
-meta_cursor_tracker_set_window_cursor (MetaCursorTracker   *tracker,
-                                       MetaCursorReference *cursor)
+meta_cursor_tracker_set_window_cursor (MetaCursorTracker *tracker,
+                                       MetaCursorSprite  *cursor_sprite)
 {
-  set_window_cursor (tracker, TRUE, cursor);
+  set_window_cursor (tracker, TRUE, cursor_sprite);
 }
 
 void
@@ -350,12 +336,12 @@ meta_cursor_tracker_unset_window_cursor (MetaCursorTracker *tracker)
 }
 
 void
-meta_cursor_tracker_set_root_cursor (MetaCursorTracker   *tracker,
-                                     MetaCursorReference *cursor)
+meta_cursor_tracker_set_root_cursor (MetaCursorTracker *tracker,
+                                     MetaCursorSprite  *cursor_sprite)
 {
-  g_clear_pointer (&tracker->root_cursor, meta_cursor_reference_unref);
-  if (cursor)
-    tracker->root_cursor = meta_cursor_reference_ref (cursor);
+  g_clear_object (&tracker->root_cursor);
+  if (cursor_sprite)
+    tracker->root_cursor = g_object_ref (cursor_sprite);
 
   sync_cursor (tracker);
 }
@@ -438,7 +424,7 @@ meta_cursor_tracker_set_pointer_visible (MetaCursorTracker *tracker,
   sync_cursor (tracker);
 }
 
-MetaCursorReference *
+MetaCursorSprite *
 meta_cursor_tracker_get_displayed_cursor (MetaCursorTracker *tracker)
 {
   return tracker->displayed_cursor;

src/backends/meta-cursor.c

@@ -21,7 +21,7 @@
 
 #include "config.h"
 
-#include "meta-cursor-private.h"
+#include "meta-cursor.h"
 
 #include <meta/errors.h>
 
@@ -29,58 +29,40 @@
 #include "screen-private.h"
 #include "meta-backend-private.h"
 
-#ifdef HAVE_NATIVE_BACKEND
-#include "backends/native/meta-cursor-renderer-native.h"
-#endif
-
 #include <string.h>
 
 #include <X11/cursorfont.h>
 #include <X11/extensions/Xfixes.h>
 #include <X11/Xcursor/Xcursor.h>
 
-#ifdef HAVE_WAYLAND
-#include <cogl/cogl-wayland-server.h>
-#endif
+enum {
+  PREPARE_AT,
 
-MetaCursorReference *
-meta_cursor_reference_ref (MetaCursorReference *self)
+  LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL];
+
+struct _MetaCursorSprite
 {
-  g_assert (self->ref_count > 0);
-  self->ref_count++;
+  GObject parent;
 
-  return self;
-}
+  MetaCursor cursor;
 
-static void
-meta_cursor_image_free (MetaCursorImage *image)
-{
-  if (image->texture)
-    cogl_object_unref (image->texture);
+  CoglTexture2D *texture;
+  float texture_scale;
+  int hot_x, hot_y;
 
-#ifdef HAVE_NATIVE_BACKEND
-  if (image->bo)
-    gbm_bo_destroy (image->bo);
-#endif
-}
+  int current_frame;
+  XcursorImages *xcursor_images;
 
-static void
-meta_cursor_reference_free (MetaCursorReference *self)
-{
-  if (self->xcursor_images)
-    XcursorImagesDestroy (self->xcursor_images);
-  meta_cursor_image_free (&self->image);
-  g_slice_free (MetaCursorReference, self);
-}
+  int theme_scale;
+  gboolean theme_dirty;
+};
 
-void
-meta_cursor_reference_unref (MetaCursorReference *self)
-{
-  self->ref_count--;
+GType meta_cursor_sprite_get_type (void) G_GNUC_CONST;
 
-  if (self->ref_count == 0)
-    meta_cursor_reference_free (self);
-}
+G_DEFINE_TYPE (MetaCursorSprite, meta_cursor_sprite, G_TYPE_OBJECT)
 
 static const char *
 translate_meta_cursor (MetaCursor cursor)
@@ -138,92 +120,26 @@ meta_cursor_create_x_cursor (Display    *xdisplay,
 }
 
 static XcursorImages *
-load_cursor_on_client (MetaCursor cursor)
+load_cursor_on_client (MetaCursor cursor, int scale)
 {
   return XcursorLibraryLoadImages (translate_meta_cursor (cursor),
                                    meta_prefs_get_cursor_theme (),
-                                   meta_prefs_get_cursor_size ());
+                                   meta_prefs_get_cursor_size () * scale);
 }
 
-#ifdef HAVE_NATIVE_BACKEND
 static void
-get_hardware_cursor_size (uint64_t *cursor_width, uint64_t *cursor_height)
+meta_cursor_sprite_load_from_xcursor_image (MetaCursorSprite *self,
+                                            XcursorImage     *xc_image)
 {
   MetaBackend *meta_backend = meta_get_backend ();
   MetaCursorRenderer *renderer = meta_backend_get_cursor_renderer (meta_backend);
-
-  if (META_IS_CURSOR_RENDERER_NATIVE (renderer))
-    {
-      meta_cursor_renderer_native_get_cursor_size (META_CURSOR_RENDERER_NATIVE (renderer), cursor_width, cursor_height);
-      return;
-    }
-
-  g_assert_not_reached ();
-}
-#endif
-
-#ifdef HAVE_NATIVE_BACKEND
-static void
-meta_cursor_image_load_gbm_buffer (struct gbm_device *gbm,
-                                   MetaCursorImage   *image,
-                                   uint8_t           *pixels,
-                                   uint               width,
-                                   uint               height,
-                                   int                rowstride,
-                                   uint32_t           gbm_format)
-{
-  uint64_t cursor_width, cursor_height;
-  get_hardware_cursor_size (&cursor_width, &cursor_height);
-
-  if (width > cursor_width || height > cursor_height)
-    {
-      meta_warning ("Invalid theme cursor size (must be at most %ux%u)\n",
-                    (unsigned int)cursor_width, (unsigned int)cursor_height);
-      return;
-    }
-
-  if (gbm_device_is_format_supported (gbm, gbm_format,
-                                      GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE))
-    {
-      uint8_t buf[4 * cursor_width * cursor_height];
-      uint i;
-
-      image->bo = gbm_bo_create (gbm, cursor_width, cursor_height,
-                                 gbm_format, GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE);
-
-      memset (buf, 0, sizeof(buf));
-      for (i = 0; i < height; i++)
-        memcpy (buf + i * 4 * cursor_width, pixels + i * rowstride, width * 4);
-
-      gbm_bo_write (image->bo, buf, cursor_width * cursor_height * 4);
-    }
-  else
-    meta_warning ("HW cursor for format %d not supported\n", gbm_format);
-}
-#endif
-
-#ifdef HAVE_NATIVE_BACKEND
-static struct gbm_device *
-get_gbm_device (void)
-{
-  MetaBackend *meta_backend = meta_get_backend ();
-  MetaCursorRenderer *renderer = meta_backend_get_cursor_renderer (meta_backend);
-
-  if (META_IS_CURSOR_RENDERER_NATIVE (renderer))
-    return meta_cursor_renderer_native_get_gbm_device (META_CURSOR_RENDERER_NATIVE (renderer));
-  else
-    return NULL;
-}
-#endif
-
-static void
-meta_cursor_image_load_from_xcursor_image (MetaCursorImage   *image,
-                                           XcursorImage      *xc_image)
-{
   uint width, height, rowstride;
   CoglPixelFormat cogl_format;
   ClutterBackend *clutter_backend;
   CoglContext *cogl_context;
+  CoglTexture *texture;
+
+  g_assert (self->texture == NULL);
 
   width           = xc_image->width;
   height          = xc_image->height;
@@ -235,41 +151,33 @@ meta_cursor_image_load_from_xcursor_image (MetaCursorImage   *image,
   cogl_format = COGL_PIXEL_FORMAT_ARGB_8888;
 #endif
 
-  image->hot_x = xc_image->xhot;
-  image->hot_y = xc_image->yhot;
-
   clutter_backend = clutter_get_default_backend ();
   cogl_context = clutter_backend_get_cogl_context (clutter_backend);
-  image->texture = cogl_texture_2d_new_from_data (cogl_context,
-                                                  width, height,
-                                                  cogl_format,
-                                                  rowstride,
-                                                  (uint8_t *) xc_image->pixels,
-                                                  NULL);
+  texture = cogl_texture_2d_new_from_data (cogl_context,
+                                           width, height,
+                                           cogl_format,
+                                           rowstride,
+                                           (uint8_t *) xc_image->pixels,
+                                           NULL);
+  meta_cursor_sprite_set_texture (self, texture,
+                                  xc_image->xhot, xc_image->yhot);
+  cogl_object_unref (texture);
 
-#ifdef HAVE_NATIVE_BACKEND
-  struct gbm_device *gbm = get_gbm_device ();
-  if (gbm)
-    meta_cursor_image_load_gbm_buffer (gbm,
-                                       image,
-                                       (uint8_t *) xc_image->pixels,
-                                       width, height, rowstride,
-                                       GBM_FORMAT_ARGB8888);
-#endif
+  meta_cursor_renderer_realize_cursor_from_xcursor (renderer, self, xc_image);
 }
 
 static XcursorImage *
-meta_cursor_reference_get_current_frame_image (MetaCursorReference *self)
+meta_cursor_sprite_get_current_frame_image (MetaCursorSprite *self)
 {
   return self->xcursor_images->images[self->current_frame];
 }
 
 void
-meta_cursor_reference_tick_frame (MetaCursorReference *self)
+meta_cursor_sprite_tick_frame (MetaCursorSprite *self)
 {
   XcursorImage *image;
 
-  if (!meta_cursor_reference_is_animated (self))
+  if (!meta_cursor_sprite_is_animated (self))
     return;
 
   self->current_frame++;
@@ -277,198 +185,176 @@ meta_cursor_reference_tick_frame (MetaCursorReference *self)
   if (self->current_frame >= self->xcursor_images->nimage)
     self->current_frame = 0;
 
-  meta_cursor_image_free (&self->image);
-  image = meta_cursor_reference_get_current_frame_image (self);
-  meta_cursor_image_load_from_xcursor_image (&self->image, image);
+  image = meta_cursor_sprite_get_current_frame_image (self);
+
+  g_clear_pointer (&self->texture, cogl_object_unref);
+  meta_cursor_sprite_load_from_xcursor_image (self, image);
 }
 
 guint
-meta_cursor_reference_get_current_frame_time (MetaCursorReference *self)
+meta_cursor_sprite_get_current_frame_time (MetaCursorSprite *self)
 {
-  if (!meta_cursor_reference_is_animated (self))
+  if (!meta_cursor_sprite_is_animated (self))
     return 0;
 
   return self->xcursor_images->images[self->current_frame]->delay;
 }
 
 gboolean
-meta_cursor_reference_is_animated (MetaCursorReference *self)
+meta_cursor_sprite_is_animated (MetaCursorSprite *self)
 {
   return (self->xcursor_images &&
           self->xcursor_images->nimage > 1);
 }
 
+MetaCursorSprite *
+meta_cursor_sprite_new (void)
+{
+  return g_object_new (META_TYPE_CURSOR_SPRITE, NULL);
+}
+
 static void
-load_cursor_image (MetaCursorReference *cursor)
+meta_cursor_sprite_load_from_theme (MetaCursorSprite *self)
 {
   XcursorImage *image;
 
-  /* Either cursors are loaded from X cursors or buffers. Since
-   * buffers are converted over immediately, we can make sure to
-   * load this directly. */
-  g_assert (cursor->cursor != META_CURSOR_NONE);
+  g_assert (self->cursor != META_CURSOR_NONE);
 
-  if (!cursor->xcursor_images)
+  /* We might be reloading with a different scale. If so clear the old data. */
+  if (self->xcursor_images)
     {
-      cursor->current_frame = 0;
-      cursor->xcursor_images = load_cursor_on_client (cursor->cursor);
-      if (!cursor->xcursor_images)
-        return;
+      g_clear_pointer (&self->texture, cogl_object_unref);
+      XcursorImagesDestroy (self->xcursor_images);
     }
 
-  image = meta_cursor_reference_get_current_frame_image (cursor);
-  meta_cursor_image_load_from_xcursor_image (&cursor->image, image);
+  self->current_frame = 0;
+  self->xcursor_images = load_cursor_on_client (self->cursor,
+                                                self->theme_scale);
+  if (!self->xcursor_images)
+    meta_fatal ("Could not find cursor. Perhaps set XCURSOR_PATH?");
+
+  image = meta_cursor_sprite_get_current_frame_image (self);
+  meta_cursor_sprite_load_from_xcursor_image (self, image);
+
+  self->theme_dirty = FALSE;
 }
 
-MetaCursorReference *
-meta_cursor_reference_from_theme (MetaCursor cursor)
+MetaCursorSprite *
+meta_cursor_sprite_from_theme (MetaCursor cursor)
 {
-  MetaCursorReference *self = g_slice_new0 (MetaCursorReference);
-  self->ref_count = 1;
+  MetaCursorSprite *self;
+
+  self = meta_cursor_sprite_new ();
+
   self->cursor = cursor;
-  return self;
-}
-
-#ifdef HAVE_WAYLAND
-static void
-meta_cursor_image_load_from_buffer (MetaCursorImage    *image,
-                                    struct wl_resource *buffer,
-                                    int                 hot_x,
-                                    int                 hot_y)
-{
-  ClutterBackend *backend;
-  CoglContext *cogl_context;
-
-  image->hot_x = hot_x;
-  image->hot_y = hot_y;
-
-  backend = clutter_get_default_backend ();
-  cogl_context = clutter_backend_get_cogl_context (backend);
-
-  image->texture = cogl_wayland_texture_2d_new_from_buffer (cogl_context, buffer, NULL);
-
-#ifdef HAVE_NATIVE_BACKEND
-  struct gbm_device *gbm = get_gbm_device ();
-  if (gbm)
-    {
-      uint32_t gbm_format;
-      uint64_t cursor_width, cursor_height;
-      uint width, height;
-
-      width = cogl_texture_get_width (COGL_TEXTURE (image->texture));
-      height = cogl_texture_get_height (COGL_TEXTURE (image->texture));
-
-      struct wl_shm_buffer *shm_buffer = wl_shm_buffer_get (buffer);
-      if (shm_buffer)
-        {
-          int rowstride = wl_shm_buffer_get_stride (shm_buffer);
-
-          wl_shm_buffer_begin_access (shm_buffer);
-
-          switch (wl_shm_buffer_get_format (shm_buffer))
-            {
-#if G_BYTE_ORDER == G_BIG_ENDIAN
-            case WL_SHM_FORMAT_ARGB8888:
-              gbm_format = GBM_FORMAT_ARGB8888;
-              break;
-            case WL_SHM_FORMAT_XRGB8888:
-              gbm_format = GBM_FORMAT_XRGB8888;
-              break;
-#else
-            case WL_SHM_FORMAT_ARGB8888:
-              gbm_format = GBM_FORMAT_ARGB8888;
-              break;
-            case WL_SHM_FORMAT_XRGB8888:
-              gbm_format = GBM_FORMAT_XRGB8888;
-              break;
-#endif
-            default:
-              g_warn_if_reached ();
-              gbm_format = GBM_FORMAT_ARGB8888;
-            }
-
-          meta_cursor_image_load_gbm_buffer (gbm,
-                                             image,
-                                             (uint8_t *) wl_shm_buffer_get_data (shm_buffer),
-                                             width, height, rowstride,
-                                             gbm_format);
-
-          wl_shm_buffer_end_access (shm_buffer);
-        }
-      else
-        {
-          /* HW cursors have a predefined size (at least 64x64), which usually is bigger than cursor theme
-             size, so themed cursors must be padded with transparent pixels to fill the
-             overlay. This is trivial if we have CPU access to the data, but it's not
-             possible if the buffer is in GPU memory (and possibly tiled too), so if we
-             don't get the right size, we fallback to GL.
-          */
-          get_hardware_cursor_size (&cursor_width, &cursor_height);
-
-          if (width != cursor_width || height != cursor_height)
-            {
-              meta_warning ("Invalid cursor size (must be 64x64), falling back to software (GL) cursors\n");
-              return;
-            }
-
-          image->bo = gbm_bo_import (gbm, GBM_BO_IMPORT_WL_BUFFER, buffer, GBM_BO_USE_CURSOR);
-          if (!image->bo)
-            meta_warning ("Importing HW cursor from wl_buffer failed\n");
-        }
-    }
-#endif
-}
-
-MetaCursorReference *
-meta_cursor_reference_from_buffer (struct wl_resource *buffer,
-                                   int                 hot_x,
-                                   int                 hot_y)
-{
-  MetaCursorReference *self;
-
-  self = g_slice_new0 (MetaCursorReference);
-  self->ref_count = 1;
-  meta_cursor_image_load_from_buffer (&self->image, buffer, hot_x, hot_y);
+  self->theme_dirty = TRUE;
 
   return self;
 }
-#endif
+
+void
+meta_cursor_sprite_set_texture (MetaCursorSprite *self,
+                                CoglTexture      *texture,
+                                int               hot_x,
+                                int               hot_y)
+{
+  g_clear_pointer (&self->texture, cogl_object_unref);
+  if (texture)
+    self->texture = cogl_object_ref (texture);
+  self->hot_x = hot_x;
+  self->hot_y = hot_y;
+}
+
+void
+meta_cursor_sprite_set_texture_scale (MetaCursorSprite *self,
+                                      float             scale)
+{
+  self->texture_scale = scale;
+}
+
+void
+meta_cursor_sprite_set_theme_scale (MetaCursorSprite *self,
+                                    int               theme_scale)
+{
+  if (self->theme_scale != theme_scale)
+    self->theme_dirty = TRUE;
+  self->theme_scale = theme_scale;
+}
 
 CoglTexture *
-meta_cursor_reference_get_cogl_texture (MetaCursorReference *cursor,
-                                        int                 *hot_x,
-                                        int                 *hot_y)
+meta_cursor_sprite_get_cogl_texture (MetaCursorSprite *self)
 {
-  if (!cursor->image.texture)
-    load_cursor_image (cursor);
-
-  if (hot_x)
-    *hot_x = cursor->image.hot_x;
-  if (hot_y)
-    *hot_y = cursor->image.hot_y;
-
-  return COGL_TEXTURE (cursor->image.texture);
+  return COGL_TEXTURE (self->texture);
 }
 
-#ifdef HAVE_NATIVE_BACKEND
-struct gbm_bo *
-meta_cursor_reference_get_gbm_bo (MetaCursorReference *cursor,
-                                  int                 *hot_x,
-                                  int                 *hot_y)
-{
-  if (!cursor->image.bo)
-    load_cursor_image (cursor);
-
-  if (hot_x)
-    *hot_x = cursor->image.hot_x;
-  if (hot_y)
-    *hot_y = cursor->image.hot_y;
-  return cursor->image.bo;
-}
-#endif
-
 MetaCursor
-meta_cursor_reference_get_meta_cursor (MetaCursorReference *cursor)
+meta_cursor_sprite_get_meta_cursor (MetaCursorSprite *self)
 {
-  return cursor->cursor;
+  return self->cursor;
+}
+
+void
+meta_cursor_sprite_get_hotspot (MetaCursorSprite *self,
+                                int              *hot_x,
+                                int              *hot_y)
+{
+  *hot_x = self->hot_x;
+  *hot_y = self->hot_y;
+}
+
+float
+meta_cursor_sprite_get_texture_scale (MetaCursorSprite *self)
+{
+  return self->texture_scale;
+}
+
+void
+meta_cursor_sprite_prepare_at (MetaCursorSprite *self,
+                               int               x,
+                               int               y)
+{
+  g_signal_emit (self, signals[PREPARE_AT], 0, x, y);
+}
+
+void
+meta_cursor_sprite_realize_texture (MetaCursorSprite *self)
+{
+  if (self->theme_dirty)
+    meta_cursor_sprite_load_from_theme (self);
+}
+
+static void
+meta_cursor_sprite_init (MetaCursorSprite *self)
+{
+  self->texture_scale = 1.0f;
+}
+
+static void
+meta_cursor_sprite_finalize (GObject *object)
+{
+  MetaCursorSprite *self = META_CURSOR_SPRITE (object);
+
+  if (self->xcursor_images)
+    XcursorImagesDestroy (self->xcursor_images);
+
+  g_clear_pointer (&self->texture, cogl_object_unref);
+
+  G_OBJECT_CLASS (meta_cursor_sprite_parent_class)->finalize (object);
+}
+
+static void
+meta_cursor_sprite_class_init (MetaCursorSpriteClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = meta_cursor_sprite_finalize;
+
+  signals[PREPARE_AT] = g_signal_new ("prepare-at",
+                                      G_TYPE_FROM_CLASS (object_class),
+                                      G_SIGNAL_RUN_LAST,
+                                      0,
+                                      NULL, NULL, NULL,
+                                      G_TYPE_NONE, 2,
+                                      G_TYPE_INT,
+                                      G_TYPE_INT);
 }

src/backends/meta-cursor.h

@@ -22,25 +22,54 @@
 #ifndef META_CURSOR_H
 #define META_CURSOR_H
 
-typedef struct _MetaCursorReference MetaCursorReference;
-
-MetaCursorReference * meta_cursor_reference_ref (MetaCursorReference *cursor);
-void meta_cursor_reference_unref (MetaCursorReference *cursor);
-
 #include <meta/common.h>
+#include <meta/boxes.h>
 
-MetaCursorReference * meta_cursor_reference_from_theme  (MetaCursor          cursor);
+typedef struct _MetaCursorSprite MetaCursorSprite;
 
-#ifdef HAVE_WAYLAND
-#include <wayland-server.h>
-MetaCursorReference * meta_cursor_reference_from_buffer (struct wl_resource *buffer,
-                                                         int                 hot_x,
-                                                         int                 hot_y);
-#endif
+#define META_TYPE_CURSOR_SPRITE (meta_cursor_sprite_get_type ())
+G_DECLARE_FINAL_TYPE (MetaCursorSprite,
+                      meta_cursor_sprite,
+                      META, CURSOR_SPRITE,
+                      GObject);
 
-MetaCursor meta_cursor_reference_get_meta_cursor (MetaCursorReference *cursor);
+MetaCursorSprite * meta_cursor_sprite_new (void);
+
+MetaCursorSprite * meta_cursor_sprite_from_theme  (MetaCursor cursor);
+
+
+void meta_cursor_sprite_set_theme_scale (MetaCursorSprite *self,
+                                         int               scale);
+
+MetaCursor meta_cursor_sprite_get_meta_cursor (MetaCursorSprite *self);
 
 Cursor meta_cursor_create_x_cursor (Display    *xdisplay,
                                     MetaCursor  cursor);
 
+void meta_cursor_sprite_prepare_at (MetaCursorSprite *self,
+                                    int               x,
+                                    int               y);
+
+void meta_cursor_sprite_realize_texture (MetaCursorSprite *self);
+
+void meta_cursor_sprite_set_texture (MetaCursorSprite *self,
+                                     CoglTexture      *texture,
+                                     int               hot_x,
+                                     int               hot_y);
+
+void meta_cursor_sprite_set_texture_scale (MetaCursorSprite *self,
+                                           float             scale);
+
+CoglTexture *meta_cursor_sprite_get_cogl_texture (MetaCursorSprite *self);
+
+void meta_cursor_sprite_get_hotspot (MetaCursorSprite *self,
+                                     int              *hot_x,
+                                     int              *hot_y);
+
+float meta_cursor_sprite_get_texture_scale (MetaCursorSprite *self);
+
+gboolean meta_cursor_sprite_is_animated            (MetaCursorSprite *self);
+void     meta_cursor_sprite_tick_frame             (MetaCursorSprite *self);
+guint    meta_cursor_sprite_get_current_frame_time (MetaCursorSprite *self);
+
 #endif /* META_CURSOR_H */

src/backends/meta-monitor-manager-private.h

@@ -174,7 +174,8 @@ struct _MetaCRTC
   /* Used when changing configuration */
   gboolean is_dirty;
 
-  MetaCursorReference *cursor;
+  /* Used by cursor renderer backend */
+  void *cursor_renderer_private;
 
   gpointer driver_private;
   GDestroyNotify driver_notify;

src/backends/meta-stage.c

@@ -24,7 +24,6 @@
 
 #include "meta-stage.h"
 
-#include "meta-cursor-private.h"
 #include <meta/meta-backend.h>
 #include <meta/util.h>
 

src/backends/native/meta-backend-native.c

@@ -328,9 +328,7 @@ meta_backend_native_init (MetaBackendNative *native)
 {
   MetaBackendNativePrivate *priv = meta_backend_native_get_instance_private (native);
 
-  /* We're a display server, so start talking to weston-launch. */
   priv->launcher = meta_launcher_new ();
-
   priv->barrier_manager = meta_barrier_manager_native_new ();
 
   priv->up_client = up_client_new ();

src/backends/native/meta-cursor-renderer-native.c

@@ -26,11 +26,16 @@
 
 #include "meta-cursor-renderer-native.h"
 
+#include <string.h>
 #include <gbm.h>
 #include <xf86drm.h>
+#include <errno.h>
+
+#include <meta/util.h>
+#include <meta/meta-backend.h>
 
-#include "meta-cursor-private.h"
 #include "meta-monitor-manager-private.h"
+#include "meta/boxes.h"
 
 #ifndef DRM_CAP_CURSOR_WIDTH
 #define DRM_CAP_CURSOR_WIDTH 0x8
@@ -39,11 +44,26 @@
 #define DRM_CAP_CURSOR_HEIGHT 0x9
 #endif
 
+/* When animating a cursor, we usually call drmModeSetCursor2 once per frame.
+ * Though, testing shows that we need to triple buffer the cursor buffer in
+ * order to avoid glitches when animating the cursor, at least when running on
+ * Intel. The reason for this might be (but is not confirmed to be) due to
+ * the user space gbm_bo cache, making us reuse and overwrite the kernel side
+ * buffer content before it was scanned out. To avoid this, we keep a user space
+ * reference to each buffer we set until at least one frame after it was drawn.
+ * In effect, this means we three active cursor gbm_bo's: one that that just has
+ * been set, one that was previously set and may or may not have been scanned
+ * out, and one pending that will be replaced if the cursor sprite changes.
+ */
+#define HW_CURSOR_BUFFER_COUNT 3
+
+static GQuark quark_cursor_sprite = 0;
+
 struct _MetaCursorRendererNativePrivate
 {
   gboolean has_hw_cursor;
 
-  MetaCursorReference *last_cursor;
+  MetaCursorSprite *last_cursor;
   guint animation_timeout_id;
 
   int drm_fd;
@@ -54,8 +74,25 @@ struct _MetaCursorRendererNativePrivate
 };
 typedef struct _MetaCursorRendererNativePrivate MetaCursorRendererNativePrivate;
 
+typedef enum _MetaCursorGbmBoState
+{
+  META_CURSOR_GBM_BO_STATE_NONE,
+  META_CURSOR_GBM_BO_STATE_SET,
+  META_CURSOR_GBM_BO_STATE_INVALIDATED,
+} MetaCursorGbmBoState;
+
+typedef struct _MetaCursorNativePrivate
+{
+  guint active_bo;
+  MetaCursorGbmBoState pending_bo_state;
+  struct gbm_bo *bos[HW_CURSOR_BUFFER_COUNT];
+} MetaCursorNativePrivate;
+
 G_DEFINE_TYPE_WITH_PRIVATE (MetaCursorRendererNative, meta_cursor_renderer_native, META_TYPE_CURSOR_RENDERER);
 
+static MetaCursorNativePrivate *
+ensure_cursor_priv (MetaCursorSprite *cursor_sprite);
+
 static void
 meta_cursor_renderer_native_finalize (GObject *object)
 {
@@ -71,63 +108,136 @@ meta_cursor_renderer_native_finalize (GObject *object)
   G_OBJECT_CLASS (meta_cursor_renderer_native_parent_class)->finalize (object);
 }
 
+static guint
+get_pending_cursor_sprite_gbm_bo_index (MetaCursorSprite *cursor_sprite)
+{
+  MetaCursorNativePrivate *cursor_priv =
+    g_object_get_qdata (G_OBJECT (cursor_sprite), quark_cursor_sprite);
+
+  return (cursor_priv->active_bo + 1) % HW_CURSOR_BUFFER_COUNT;
+}
+
+static struct gbm_bo *
+get_pending_cursor_sprite_gbm_bo (MetaCursorSprite *cursor_sprite)
+{
+  MetaCursorNativePrivate *cursor_priv =
+    g_object_get_qdata (G_OBJECT (cursor_sprite), quark_cursor_sprite);
+  guint pending_bo;
+
+  if (!cursor_priv)
+    return NULL;
+
+  pending_bo = get_pending_cursor_sprite_gbm_bo_index (cursor_sprite);
+  return cursor_priv->bos[pending_bo];
+}
+
+static struct gbm_bo *
+get_active_cursor_sprite_gbm_bo (MetaCursorSprite *cursor_sprite)
+{
+  MetaCursorNativePrivate *cursor_priv =
+    g_object_get_qdata (G_OBJECT (cursor_sprite), quark_cursor_sprite);
+
+  if (!cursor_priv)
+    return NULL;
+
+  return cursor_priv->bos[cursor_priv->active_bo];
+}
+
+static void
+set_pending_cursor_sprite_gbm_bo (MetaCursorSprite *cursor_sprite,
+                                  struct gbm_bo    *bo)
+{
+  MetaCursorNativePrivate *cursor_priv;
+  guint pending_bo;
+
+  cursor_priv = ensure_cursor_priv (cursor_sprite);
+
+  pending_bo = get_pending_cursor_sprite_gbm_bo_index (cursor_sprite);
+  cursor_priv->bos[pending_bo] = bo;
+  cursor_priv->pending_bo_state = META_CURSOR_GBM_BO_STATE_SET;
+}
+
 static void
 set_crtc_cursor (MetaCursorRendererNative *native,
                  MetaCRTC                 *crtc,
-                 MetaCursorReference      *cursor,
+                 MetaCursorSprite         *cursor_sprite,
                  gboolean                  force)
 {
   MetaCursorRendererNativePrivate *priv = meta_cursor_renderer_native_get_instance_private (native);
 
-  if (crtc->cursor == cursor && !force)
-    return;
-
-  crtc->cursor = cursor;
-
-  if (cursor)
+  if (cursor_sprite)
     {
+      MetaCursorNativePrivate *cursor_priv =
+        g_object_get_qdata (G_OBJECT (cursor_sprite), quark_cursor_sprite);
       struct gbm_bo *bo;
       union gbm_bo_handle handle;
       int hot_x, hot_y;
 
-      bo = meta_cursor_reference_get_gbm_bo (cursor, &hot_x, &hot_y);
+      if (cursor_priv->pending_bo_state == META_CURSOR_GBM_BO_STATE_SET)
+        bo = get_pending_cursor_sprite_gbm_bo (cursor_sprite);
+      else
+        bo = get_active_cursor_sprite_gbm_bo (cursor_sprite);
+
+      if (!force && bo == crtc->cursor_renderer_private)
+        return;
+
+      crtc->cursor_renderer_private = bo;
 
       handle = gbm_bo_get_handle (bo);
+      meta_cursor_sprite_get_hotspot (cursor_sprite, &hot_x, &hot_y);
+
       drmModeSetCursor2 (priv->drm_fd, crtc->crtc_id, handle.u32,
                          priv->cursor_width, priv->cursor_height, hot_x, hot_y);
+
+      if (cursor_priv->pending_bo_state == META_CURSOR_GBM_BO_STATE_SET)
+        {
+          cursor_priv->active_bo =
+            (cursor_priv->active_bo + 1) % HW_CURSOR_BUFFER_COUNT;
+          cursor_priv->pending_bo_state = META_CURSOR_GBM_BO_STATE_NONE;
+        }
     }
   else
     {
-      drmModeSetCursor2 (priv->drm_fd, crtc->crtc_id, 0, 0, 0, 0, 0);
+      if (force || crtc->cursor_renderer_private != NULL)
+        {
+          drmModeSetCursor2 (priv->drm_fd, crtc->crtc_id, 0, 0, 0, 0, 0);
+          crtc->cursor_renderer_private = NULL;
+        }
     }
 }
 
 static void
 update_hw_cursor (MetaCursorRendererNative *native,
+                  MetaCursorSprite         *cursor_sprite,
                   gboolean                  force)
 {
   MetaCursorRendererNativePrivate *priv = meta_cursor_renderer_native_get_instance_private (native);
   MetaCursorRenderer *renderer = META_CURSOR_RENDERER (native);
-  const MetaRectangle *cursor_rect = meta_cursor_renderer_get_rect (renderer);
-  MetaCursorReference *cursor = meta_cursor_renderer_get_cursor (renderer);
   MetaMonitorManager *monitors;
   MetaCRTC *crtcs;
   unsigned int i, n_crtcs;
+  MetaRectangle rect;
 
   monitors = meta_monitor_manager_get ();
   meta_monitor_manager_get_resources (monitors, NULL, NULL, &crtcs, &n_crtcs, NULL, NULL);
 
+  if (cursor_sprite)
+    rect = meta_cursor_renderer_calculate_rect (renderer, cursor_sprite);
+  else
+    rect = (MetaRectangle) { 0 };
+
   for (i = 0; i < n_crtcs; i++)
     {
-      gboolean crtc_should_have_cursor;
-      MetaCursorReference *crtc_cursor;
+      gboolean crtc_should_use_cursor;
+      MetaCursorSprite *crtc_cursor;
       MetaRectangle *crtc_rect;
 
       crtc_rect = &crtcs[i].rect;
 
-      crtc_should_have_cursor = (priv->has_hw_cursor && meta_rectangle_overlap (cursor_rect, crtc_rect));
-      if (crtc_should_have_cursor)
-        crtc_cursor = cursor;
+      crtc_should_use_cursor = (priv->has_hw_cursor &&
+                                meta_rectangle_overlap (&rect, crtc_rect));
+      if (crtc_should_use_cursor)
+        crtc_cursor = cursor_sprite;
       else
         crtc_cursor = NULL;
 
@@ -136,49 +246,79 @@ update_hw_cursor (MetaCursorRendererNative *native,
       if (crtc_cursor)
         {
           drmModeMoveCursor (priv->drm_fd, crtcs[i].crtc_id,
-                             cursor_rect->x - crtc_rect->x,
-                             cursor_rect->y - crtc_rect->y);
+                             rect.x - crtc_rect->x,
+                             rect.y - crtc_rect->y);
         }
     }
 }
 
 static gboolean
-should_have_hw_cursor (MetaCursorRenderer *renderer)
+has_valid_cursor_sprite_gbm_bo (MetaCursorSprite *cursor_sprite)
 {
-  MetaCursorReference *cursor = meta_cursor_renderer_get_cursor (renderer);
+  MetaCursorNativePrivate *cursor_priv =
+    g_object_get_qdata (G_OBJECT (cursor_sprite), quark_cursor_sprite);
 
-  if (cursor)
-    return (meta_cursor_reference_get_gbm_bo (cursor, NULL, NULL) != NULL);
-  else
+  switch (cursor_priv->pending_bo_state)
+    {
+    case META_CURSOR_GBM_BO_STATE_NONE:
+      return get_active_cursor_sprite_gbm_bo (cursor_sprite) != NULL;
+    case META_CURSOR_GBM_BO_STATE_SET:
+      return TRUE;
+    case META_CURSOR_GBM_BO_STATE_INVALIDATED:
+      return FALSE;
+    }
+
+  g_assert_not_reached ();
+
+  return FALSE;
+}
+
+static gboolean
+should_have_hw_cursor (MetaCursorRenderer *renderer,
+                       MetaCursorSprite   *cursor_sprite)
+{
+  CoglTexture *texture;
+
+  if (!cursor_sprite)
     return FALSE;
+
+  texture = meta_cursor_sprite_get_cogl_texture (cursor_sprite);
+  if (!texture)
+    return FALSE;
+
+  if (meta_cursor_sprite_get_texture_scale (cursor_sprite) != 1)
+    return FALSE;
+
+  if (!has_valid_cursor_sprite_gbm_bo (cursor_sprite))
+    return FALSE;
+
+  return TRUE;
 }
 
 static gboolean
 meta_cursor_renderer_native_update_animation (MetaCursorRendererNative *native)
 {
   MetaCursorRendererNativePrivate *priv = meta_cursor_renderer_native_get_instance_private (native);
-  MetaCursorReference *cursor;
+  MetaCursorRenderer *renderer = META_CURSOR_RENDERER (native);
+  MetaCursorSprite *cursor_sprite = meta_cursor_renderer_get_cursor (renderer);
 
   priv->animation_timeout_id = 0;
-  cursor = meta_cursor_renderer_get_cursor (META_CURSOR_RENDERER (native));
-  meta_cursor_reference_tick_frame (cursor);
-  meta_cursor_renderer_force_update (META_CURSOR_RENDERER (native));
-  meta_cursor_renderer_native_force_update (native);
+  meta_cursor_sprite_tick_frame (cursor_sprite);
+  meta_cursor_renderer_force_update (renderer);
 
   return G_SOURCE_REMOVE;
 }
 
 static void
-meta_cursor_renderer_native_trigger_frame (MetaCursorRendererNative *native)
+meta_cursor_renderer_native_trigger_frame (MetaCursorRendererNative *native,
+                                           MetaCursorSprite         *cursor_sprite)
 {
   MetaCursorRendererNativePrivate *priv = meta_cursor_renderer_native_get_instance_private (native);
-  MetaCursorReference *cursor;
   gboolean cursor_change;
   guint delay;
 
-  cursor = meta_cursor_renderer_get_cursor (META_CURSOR_RENDERER (native));
-  cursor_change = cursor != priv->last_cursor;
-  priv->last_cursor = cursor;
+  cursor_change = cursor_sprite != priv->last_cursor;
+  priv->last_cursor = cursor_sprite;
 
   if (!cursor_change && priv->animation_timeout_id)
     return;
@@ -189,9 +329,9 @@ meta_cursor_renderer_native_trigger_frame (MetaCursorRendererNative *native)
       priv->animation_timeout_id = 0;
     }
 
-  if (cursor && meta_cursor_reference_is_animated (cursor))
+  if (cursor_sprite && meta_cursor_sprite_is_animated (cursor_sprite))
     {
-      delay = meta_cursor_reference_get_current_frame_time (cursor);
+      delay = meta_cursor_sprite_get_current_frame_time (cursor_sprite);
 
       if (delay == 0)
         return;
@@ -206,18 +346,250 @@ meta_cursor_renderer_native_trigger_frame (MetaCursorRendererNative *native)
 }
 
 static gboolean
-meta_cursor_renderer_native_update_cursor (MetaCursorRenderer *renderer)
+meta_cursor_renderer_native_update_cursor (MetaCursorRenderer *renderer,
+                                           MetaCursorSprite   *cursor_sprite)
 {
   MetaCursorRendererNative *native = META_CURSOR_RENDERER_NATIVE (renderer);
   MetaCursorRendererNativePrivate *priv = meta_cursor_renderer_native_get_instance_private (native);
 
-  meta_cursor_renderer_native_trigger_frame (native);
+  if (cursor_sprite)
+    meta_cursor_sprite_realize_texture (cursor_sprite);
 
-  priv->has_hw_cursor = should_have_hw_cursor (renderer);
-  update_hw_cursor (native, FALSE);
+  meta_cursor_renderer_native_trigger_frame (native, cursor_sprite);
+
+  priv->has_hw_cursor = should_have_hw_cursor (renderer, cursor_sprite);
+  update_hw_cursor (native, cursor_sprite, FALSE);
   return priv->has_hw_cursor;
 }
 
+static void
+get_hardware_cursor_size (MetaCursorRendererNative *native,
+                          uint64_t *width, uint64_t *height)
+{
+  MetaCursorRendererNativePrivate *priv =
+    meta_cursor_renderer_native_get_instance_private (native);
+
+  *width = priv->cursor_width;
+  *height = priv->cursor_height;
+}
+
+static void
+cursor_priv_free (gpointer data)
+{
+  MetaCursorNativePrivate *cursor_priv = data;
+  guint i;
+
+  if (!data)
+    return;
+
+  for (i = 0; i < HW_CURSOR_BUFFER_COUNT; i++)
+    g_clear_pointer (&cursor_priv->bos[0], (GDestroyNotify) gbm_bo_destroy);
+  g_slice_free (MetaCursorNativePrivate, cursor_priv);
+}
+
+static MetaCursorNativePrivate *
+ensure_cursor_priv (MetaCursorSprite *cursor_sprite)
+{
+  MetaCursorNativePrivate *cursor_priv =
+    g_object_get_qdata (G_OBJECT (cursor_sprite), quark_cursor_sprite);
+
+  if (!cursor_priv)
+    {
+      cursor_priv = g_slice_new0 (MetaCursorNativePrivate);
+      g_object_set_qdata_full (G_OBJECT (cursor_sprite),
+                               quark_cursor_sprite,
+                               cursor_priv,
+                               cursor_priv_free);
+    }
+
+  return cursor_priv;
+}
+
+static void
+load_cursor_sprite_gbm_buffer (MetaCursorRendererNative *native,
+                               MetaCursorSprite         *cursor_sprite,
+                               uint8_t                  *pixels,
+                               uint                      width,
+                               uint                      height,
+                               int                       rowstride,
+                               uint32_t                  gbm_format)
+{
+  MetaCursorRendererNativePrivate *priv =
+    meta_cursor_renderer_native_get_instance_private (native);
+  uint64_t cursor_width, cursor_height;
+
+  get_hardware_cursor_size (native, &cursor_width, &cursor_height);
+
+  if (width > cursor_width || height > cursor_height)
+    {
+      meta_warning ("Invalid theme cursor size (must be at most %ux%u)\n",
+                    (unsigned int)cursor_width, (unsigned int)cursor_height);
+      return;
+    }
+
+  if (gbm_device_is_format_supported (priv->gbm, gbm_format,
+                                      GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE))
+    {
+      struct gbm_bo *bo;
+      uint8_t buf[4 * cursor_width * cursor_height];
+      uint i;
+
+      bo = gbm_bo_create (priv->gbm, cursor_width, cursor_height,
+                          gbm_format, GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE);
+      if (!bo)
+        {
+          meta_warning ("Failed to allocate HW cursor buffer\n");
+          return;
+        }
+
+      memset (buf, 0, sizeof(buf));
+      for (i = 0; i < height; i++)
+        memcpy (buf + i * 4 * cursor_width, pixels + i * rowstride, width * 4);
+      if (gbm_bo_write (bo, buf, cursor_width * cursor_height * 4) != 0)
+        {
+          meta_warning ("Failed to write cursors buffer data: %s",
+                        g_strerror (errno));
+          gbm_bo_destroy (bo);
+          return;
+        }
+
+      set_pending_cursor_sprite_gbm_bo (cursor_sprite, bo);
+    }
+  else
+    {
+      meta_warning ("HW cursor for format %d not supported\n", gbm_format);
+    }
+}
+
+static void
+invalidate_pending_cursor_sprite_gbm_bo (MetaCursorSprite *cursor_sprite)
+{
+  MetaCursorNativePrivate *cursor_priv =
+    g_object_get_qdata (G_OBJECT (cursor_sprite), quark_cursor_sprite);
+  guint pending_bo;
+
+  if (!cursor_priv)
+    return;
+
+  pending_bo = get_pending_cursor_sprite_gbm_bo_index (cursor_sprite);
+  g_clear_pointer (&cursor_priv->bos[pending_bo],
+                   (GDestroyNotify) gbm_bo_destroy);
+  cursor_priv->pending_bo_state = META_CURSOR_GBM_BO_STATE_INVALIDATED;
+}
+
+#ifdef HAVE_WAYLAND
+static void
+meta_cursor_renderer_native_realize_cursor_from_wl_buffer (MetaCursorRenderer *renderer,
+                                                           MetaCursorSprite *cursor_sprite,
+                                                           struct wl_resource *buffer)
+{
+  MetaCursorRendererNative *native = META_CURSOR_RENDERER_NATIVE (renderer);
+  MetaCursorRendererNativePrivate *priv =
+    meta_cursor_renderer_native_get_instance_private (native);
+  uint32_t gbm_format;
+  uint64_t cursor_width, cursor_height;
+  CoglTexture *texture;
+  uint width, height;
+
+  /* Destroy any previous pending cursor buffer; we'll always either fail (which
+   * should unset, or succeed, which will set new buffer.
+   */
+  invalidate_pending_cursor_sprite_gbm_bo (cursor_sprite);
+
+  texture = meta_cursor_sprite_get_cogl_texture (cursor_sprite);
+  width = cogl_texture_get_width (texture);
+  height = cogl_texture_get_height (texture);
+
+  struct wl_shm_buffer *shm_buffer = wl_shm_buffer_get (buffer);
+  if (shm_buffer)
+    {
+      int rowstride = wl_shm_buffer_get_stride (shm_buffer);
+      uint8_t *buffer_data;
+
+      wl_shm_buffer_begin_access (shm_buffer);
+
+      switch (wl_shm_buffer_get_format (shm_buffer))
+        {
+#if G_BYTE_ORDER == G_BIG_ENDIAN
+        case WL_SHM_FORMAT_ARGB8888:
+          gbm_format = GBM_FORMAT_ARGB8888;
+          break;
+        case WL_SHM_FORMAT_XRGB8888:
+          gbm_format = GBM_FORMAT_XRGB8888;
+          break;
+#else
+        case WL_SHM_FORMAT_ARGB8888:
+          gbm_format = GBM_FORMAT_ARGB8888;
+          break;
+        case WL_SHM_FORMAT_XRGB8888:
+          gbm_format = GBM_FORMAT_XRGB8888;
+          break;
+#endif
+        default:
+          g_warn_if_reached ();
+          gbm_format = GBM_FORMAT_ARGB8888;
+        }
+
+      buffer_data = wl_shm_buffer_get_data (shm_buffer);
+      load_cursor_sprite_gbm_buffer (native,
+                                     cursor_sprite,
+                                     buffer_data,
+                                     width, height, rowstride,
+                                     gbm_format);
+
+      wl_shm_buffer_end_access (shm_buffer);
+    }
+  else
+    {
+      struct gbm_bo *bo;
+
+      /* HW cursors have a predefined size (at least 64x64), which usually is
+       * bigger than cursor theme size, so themed cursors must be padded with
+       * transparent pixels to fill the overlay. This is trivial if we have CPU
+       * access to the data, but it's not possible if the buffer is in GPU
+       * memory (and possibly tiled too), so if we don't get the right size, we
+       * fallback to GL. */
+      get_hardware_cursor_size (native, &cursor_width, &cursor_height);
+
+      if (width != cursor_width || height != cursor_height)
+        {
+          meta_warning ("Invalid cursor size (must be 64x64), falling back to software (GL) cursors\n");
+          return;
+        }
+
+      bo = gbm_bo_import (priv->gbm,
+                          GBM_BO_IMPORT_WL_BUFFER,
+                          buffer,
+                          GBM_BO_USE_CURSOR);
+      if (!bo)
+        {
+          meta_warning ("Importing HW cursor from wl_buffer failed\n");
+          return;
+        }
+
+      set_pending_cursor_sprite_gbm_bo (cursor_sprite, bo);
+    }
+}
+#endif
+
+static void
+meta_cursor_renderer_native_realize_cursor_from_xcursor (MetaCursorRenderer *renderer,
+                                                         MetaCursorSprite *cursor_sprite,
+                                                         XcursorImage *xc_image)
+{
+  MetaCursorRendererNative *native = META_CURSOR_RENDERER_NATIVE (renderer);
+
+  invalidate_pending_cursor_sprite_gbm_bo (cursor_sprite);
+
+  load_cursor_sprite_gbm_buffer (native,
+                                 cursor_sprite,
+                                 (uint8_t *) xc_image->pixels,
+                                 xc_image->width,
+                                 xc_image->height,
+                                 xc_image->width * 4,
+                                 GBM_FORMAT_ARGB8888);
+}
+
 static void
 meta_cursor_renderer_native_class_init (MetaCursorRendererNativeClass *klass)
 {
@@ -226,6 +598,22 @@ meta_cursor_renderer_native_class_init (MetaCursorRendererNativeClass *klass)
 
   object_class->finalize = meta_cursor_renderer_native_finalize;
   renderer_class->update_cursor = meta_cursor_renderer_native_update_cursor;
+#ifdef HAVE_WAYLAND
+  renderer_class->realize_cursor_from_wl_buffer =
+    meta_cursor_renderer_native_realize_cursor_from_wl_buffer;
+#endif
+  renderer_class->realize_cursor_from_xcursor =
+    meta_cursor_renderer_native_realize_cursor_from_xcursor;
+
+  quark_cursor_sprite = g_quark_from_static_string ("-meta-cursor-native");
+}
+
+static void
+force_update_hw_cursor (MetaCursorRendererNative *native)
+{
+  MetaCursorRenderer *renderer = META_CURSOR_RENDERER (native);
+
+  update_hw_cursor (native, meta_cursor_renderer_get_cursor (renderer), TRUE);
 }
 
 static void
@@ -233,7 +621,7 @@ on_monitors_changed (MetaMonitorManager       *monitors,
                      MetaCursorRendererNative *native)
 {
   /* Our tracking is all messed up, so force an update. */
-  update_hw_cursor (native, TRUE);
+  force_update_hw_cursor (native);
 }
 
 static void
@@ -278,18 +666,8 @@ meta_cursor_renderer_native_get_gbm_device (MetaCursorRendererNative *native)
   return priv->gbm;
 }
 
-void
-meta_cursor_renderer_native_get_cursor_size (MetaCursorRendererNative *native,
-                                             uint64_t *width, uint64_t *height)
-{
-  MetaCursorRendererNativePrivate *priv = meta_cursor_renderer_native_get_instance_private (native);
-
-  *width = priv->cursor_width;
-  *height = priv->cursor_height;
-}
-
 void
 meta_cursor_renderer_native_force_update (MetaCursorRendererNative *native)
 {
-  update_hw_cursor (native, TRUE);
+  force_update_hw_cursor (native);
 }

src/backends/native/meta-launcher.c

@@ -37,6 +37,7 @@
 #include <unistd.h>
 
 #include <systemd/sd-login.h>
+#include <gudev/gudev.h>
 
 #include "dbus-utils.h"
 #include "meta-dbus-login1.h"
@@ -53,12 +54,27 @@ struct _MetaLauncher
   gboolean session_active;
 };
 
+static void
+report_error_and_die (const char *prefix,
+                      GError *error)
+{
+  /* if a function returns due to g_return_val_if_fail,
+   * then the error may not be set */
+  if (error)
+    g_error ("%s: %s", prefix, error->message);
+  else
+    g_error ("%s", prefix);
+
+  /* the error is not freed, but it is ok as g_error aborts the process */
+}
+
 static Login1Session *
 get_session_proxy (GCancellable *cancellable)
 {
   char *proxy_path;
   char *session_id;
   Login1Session *session_proxy;
+  GError *error = NULL;
 
   if (sd_pid_get_session (getpid (), &session_id) < 0)
     return NULL;
@@ -69,7 +85,10 @@ get_session_proxy (GCancellable *cancellable)
                                                          G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START,
                                                          "org.freedesktop.login1",
                                                          proxy_path,
-                                                         cancellable, NULL);
+                                                         cancellable, &error);
+  if (!session_proxy)
+    report_error_and_die ("Failed getting session proxy", error);
+
   free (proxy_path);
 
   return session_proxy;
@@ -78,11 +97,16 @@ get_session_proxy (GCancellable *cancellable)
 static Login1Seat *
 get_seat_proxy (GCancellable *cancellable)
 {
-  return login1_seat_proxy_new_for_bus_sync (G_BUS_TYPE_SYSTEM,
-                                             G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START,
-                                             "org.freedesktop.login1",
-                                             "/org/freedesktop/login1/seat/self",
-                                             cancellable, NULL);
+  GError *error = NULL;
+  Login1Seat *seat = login1_seat_proxy_new_for_bus_sync (G_BUS_TYPE_SYSTEM,
+                                                         G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START,
+                                                         "org.freedesktop.login1",
+                                                         "/org/freedesktop/login1/seat/self",
+                                                         cancellable, &error);
+  if (!seat)
+    report_error_and_die ("Could not get seat proxy", error);
+
+  return seat;
 }
 
 static void
@@ -223,7 +247,7 @@ on_evdev_device_close (int      fd,
   if (!get_device_info_from_fd (fd, &major, &minor))
     {
       g_warning ("Could not get device info for fd %d: %m", fd);
-      return;
+      goto out;
     }
 
   if (!login1_session_call_release_device_sync (self->session_proxy,
@@ -232,6 +256,9 @@ on_evdev_device_close (int      fd,
     {
       g_warning ("Could not release device %d,%d: %s", major, minor, error->message);
     }
+
+out:
+  close (fd);
 }
 
 static void
@@ -259,31 +286,115 @@ on_active_changed (Login1Session *session,
   sync_active (self);
 }
 
-static gboolean
+static gchar *
+get_primary_gpu_path (const gchar *seat_name)
+{
+  const gchar *subsystems[] = {"drm", NULL};
+  gchar *path = NULL;
+  GList *devices, *tmp;
+
+  GUdevClient *gudev_client = g_udev_client_new (subsystems);
+  GUdevEnumerator *enumerator = g_udev_enumerator_new (gudev_client);
+
+  g_udev_enumerator_add_match_name (enumerator, "card*");
+  g_udev_enumerator_add_match_tag (enumerator, "seat");
+
+  devices = g_udev_enumerator_execute (enumerator);
+  if (!devices)
+    goto out;
+
+  for (tmp = devices; tmp != NULL; tmp = tmp->next)
+    {
+      GUdevDevice *pci_device;
+      GUdevDevice *dev = tmp->data;
+      gint boot_vga;
+      const gchar *device_seat;
+
+      /* filter out devices that are not character device, like card0-VGA-1 */
+      if (g_udev_device_get_device_type (dev) != G_UDEV_DEVICE_TYPE_CHAR)
+        continue;
+
+      device_seat = g_udev_device_get_property (dev, "ID_SEAT");
+      if (!device_seat)
+        {
+          /* when ID_SEAT is not set, it means seat0 */
+          device_seat = "seat0";
+        }
+      else if (g_strcmp0 (device_seat, "seat0") != 0)
+        {
+          /* if the device has been explicitly assigned other seat
+           * than seat0, it is probably the right device to use */
+          path = g_strdup (g_udev_device_get_device_file (dev));
+          break;
+        }
+
+      /* skip devices that do not belong to our seat */
+      if (g_strcmp0 (seat_name, device_seat))
+        continue;
+
+      pci_device = g_udev_device_get_parent_with_subsystem (dev, "pci", NULL);
+      if (!pci_device)
+          continue;
+
+      /* get value of boot_vga attribute or 0 if the device has no boot_vga */
+      boot_vga = g_udev_device_get_sysfs_attr_as_int (pci_device, "boot_vga");
+      g_object_unref (pci_device);
+
+      if (boot_vga == 1)
+        {
+          /* found the boot_vga device */
+          path = g_strdup (g_udev_device_get_device_file (dev));
+          break;
+        }
+    }
+
+  g_list_free_full (devices, g_object_unref);
+
+out:
+  g_object_unref (enumerator);
+  g_object_unref (gudev_client);
+
+  return path;
+}
+
+static void
 get_kms_fd (Login1Session *session_proxy,
+            const gchar *seat_id,
             int *fd_out)
 {
   int major, minor;
   int fd;
+  gchar *path;
   GError *error = NULL;
 
-  /* XXX -- use udev to find the DRM master device */
-  if (!get_device_info_from_path ("/dev/dri/card0", &major, &minor))
-    {
-      g_warning ("Could not stat /dev/dri/card0: %m");
-      return FALSE;
-    }
+  path = get_primary_gpu_path (seat_id);
+  if (!path)
+    g_error ("could not find drm kms device");
+
+  if (!get_device_info_from_path (path, &major, &minor))
+    g_error ("Could not stat %s: %m", path);
+
+  g_free (path);
 
   if (!take_device (session_proxy, major, minor, &fd, NULL, &error))
-    {
-      g_warning ("Could not open DRM device: %s\n", error->message);
-      g_error_free (error);
-      return FALSE;
-    }
+    report_error_and_die ("Could not open DRM device", error);
 
   *fd_out = fd;
+}
 
-  return TRUE;
+static gchar *
+get_seat_id (void)
+{
+  char *session_id, *seat_id = NULL;
+
+  if (sd_pid_get_session (0, &session_id) < 0)
+    return NULL;
+
+  /* on error the seat_id will remain NULL */
+  sd_session_get_seat (session_id, &seat_id);
+  free (session_id);
+
+  return seat_id;
 }
 
 MetaLauncher *
@@ -291,22 +402,23 @@ meta_launcher_new (void)
 {
   MetaLauncher *self = NULL;
   Login1Session *session_proxy;
+  char *seat_id;
   GError *error = NULL;
   int kms_fd;
 
   session_proxy = get_session_proxy (NULL);
   if (!login1_session_call_take_control_sync (session_proxy, FALSE, NULL, &error))
-    {
-      g_warning ("Could not take control: %s", error->message);
-      g_error_free (error);
-      goto out;
-    }
+    report_error_and_die ("Could not take control", error);
 
-  if (!get_kms_fd (session_proxy, &kms_fd))
-    goto out;
+  seat_id = get_seat_id ();
+  if (!seat_id)
+    g_error ("Failed getting seat id");
+
+  get_kms_fd (session_proxy, seat_id, &kms_fd);
+  free (seat_id);
 
   self = g_slice_new0 (MetaLauncher);
-  self->session_proxy = g_object_ref (session_proxy);
+  self->session_proxy = session_proxy;
   self->seat_proxy = get_seat_proxy (NULL);
 
   self->session_active = TRUE;
@@ -318,9 +430,6 @@ meta_launcher_new (void)
 
   g_signal_connect (self->session_proxy, "notify::active", G_CALLBACK (on_active_changed), self);
 
-out:
-  g_object_unref (session_proxy);
-
   return self;
 }
 

src/backends/x11/meta-backend-x11.c

@@ -40,7 +40,11 @@
 #include "meta-idle-monitor-xsync.h"
 #include "meta-monitor-manager-xrandr.h"
 #include "backends/meta-monitor-manager-dummy.h"
+#include "backends/x11/nested/meta-cursor-renderer-x11-nested.h"
 #include "meta-cursor-renderer-x11.h"
+#ifdef HAVE_WAYLAND
+#include "wayland/meta-wayland.h"
+#endif
 
 #include <meta/util.h>
 #include "display-private.h"
@@ -154,10 +158,9 @@ translate_crossing_event (MetaBackendX11 *x11,
     }
 
   Window stage_window = meta_backend_x11_get_xwindow (x11);
-  if (enter_event->event != stage_window)
+  if (enter_event->event != stage_window &&
+      priv->mode == META_BACKEND_X11_MODE_COMPOSITOR)
     {
-      /* See above for the rationale for this... */
-      g_assert (priv->mode == META_BACKEND_X11_MODE_COMPOSITOR);
       enter_event->event = meta_backend_x11_get_xwindow (x11);
       enter_event->event_x = enter_event->root_x;
       enter_event->event_y = enter_event->root_y;
@@ -270,6 +273,25 @@ handle_host_xevent (MetaBackend *backend,
       }
   }
 
+  if (priv->mode == META_BACKEND_X11_MODE_NESTED && event->type == FocusIn)
+    {
+#ifdef HAVE_WAYLAND
+      Window xwin = meta_backend_x11_get_xwindow(x11);
+      XEvent xev;
+
+      if (event->xfocus.window == xwin)
+        {
+          /* Since we've selected for KeymapStateMask, every FocusIn is followed immediately
+           * by a KeymapNotify event */
+          XMaskEvent(priv->xdisplay, KeymapStateMask, &xev);
+          MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
+          meta_wayland_compositor_update_key_state (compositor, xev.xkeymap.key_vector, 32, 8);
+        }
+#else
+      g_assert_not_reached ();
+#endif
+    }
+
   if (event->type == (priv->xsync_event_base + XSyncAlarmNotify))
     handle_alarm_notify (backend, event);
 
@@ -500,7 +522,20 @@ meta_backend_x11_create_monitor_manager (MetaBackend *backend)
 static MetaCursorRenderer *
 meta_backend_x11_create_cursor_renderer (MetaBackend *backend)
 {
-  return g_object_new (META_TYPE_CURSOR_RENDERER_X11, NULL);
+  MetaBackendX11 *x11 = META_BACKEND_X11 (backend);
+  MetaBackendX11Private *priv = meta_backend_x11_get_instance_private (x11);
+
+  switch (priv->mode)
+    {
+    case META_BACKEND_X11_MODE_COMPOSITOR:
+      return g_object_new (META_TYPE_CURSOR_RENDERER_X11, NULL);
+      break;
+    case META_BACKEND_X11_MODE_NESTED:
+      return g_object_new (META_TYPE_CURSOR_RENDERER_X11_NESTED, NULL);
+      break;
+    default:
+      g_assert_not_reached ();
+    }
 }
 
 static gboolean
@@ -801,6 +836,20 @@ meta_backend_x11_select_stage_events (MetaBackend *backend)
     }
 
   XISelectEvents (priv->xdisplay, xwin, &mask, 1);
+
+  if (priv->mode == META_BACKEND_X11_MODE_NESTED)
+    {
+      /* We have no way of tracking key changes when the stage doesn't have
+       * focus, so we select for KeymapStateMask so that we get a complete
+       * dump of the keyboard state in a KeymapNotify event that immediately
+       * follows each FocusIn (and EnterNotify, but we ignore that.)
+       */
+      XWindowAttributes xwa;
+
+      XGetWindowAttributes(priv->xdisplay, xwin, &xwa);
+      XSelectInput(priv->xdisplay, xwin,
+                   xwa.your_event_mask | FocusChangeMask | KeymapStateMask);
+    }
 }
 
 static void

src/backends/x11/meta-cursor-renderer-x11.c

@@ -40,25 +40,29 @@ typedef struct _MetaCursorRendererX11Private MetaCursorRendererX11Private;
 G_DEFINE_TYPE_WITH_PRIVATE (MetaCursorRendererX11, meta_cursor_renderer_x11, META_TYPE_CURSOR_RENDERER);
 
 static gboolean
-meta_cursor_renderer_x11_update_cursor (MetaCursorRenderer *renderer)
+meta_cursor_renderer_x11_update_cursor (MetaCursorRenderer *renderer,
+                                        MetaCursorSprite   *cursor_sprite)
 {
   MetaCursorRendererX11 *x11 = META_CURSOR_RENDERER_X11 (renderer);
   MetaCursorRendererX11Private *priv = meta_cursor_renderer_x11_get_instance_private (x11);
 
   MetaBackendX11 *backend = META_BACKEND_X11 (meta_get_backend ());
   Window xwindow = meta_backend_x11_get_xwindow (backend);
-
-  if (xwindow == None)
-    return FALSE;
-
   Display *xdisplay = meta_backend_x11_get_xdisplay (backend);
 
-  MetaCursorReference *cursor_ref = meta_cursor_renderer_get_cursor (renderer);
+  if (xwindow == None)
+    {
+      if (cursor_sprite)
+        meta_cursor_sprite_realize_texture (cursor_sprite);
+      return FALSE;
+    }
+
   gboolean has_server_cursor = FALSE;
 
-  if (cursor_ref)
+  if (cursor_sprite)
     {
-      MetaCursor cursor = meta_cursor_reference_get_meta_cursor (cursor_ref);
+      MetaCursor cursor = meta_cursor_sprite_get_meta_cursor (cursor_sprite);
+
       if (cursor != META_CURSOR_NONE)
         {
           Cursor xcursor = meta_cursor_create_x_cursor (xdisplay, cursor);
@@ -80,6 +84,9 @@ meta_cursor_renderer_x11_update_cursor (MetaCursorRenderer *renderer)
       priv->server_cursor_visible = has_server_cursor;
     }
 
+  if (!priv->server_cursor_visible && cursor_sprite)
+    meta_cursor_sprite_realize_texture (cursor_sprite);
+
   return priv->server_cursor_visible;
 }
 

src/backends/x11/nested/meta-cursor-renderer-x11-nested.c

@@ -0,0 +1,91 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/*
+ * Copyright (C) 2015 Red Hat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by:
+ *     Jonas Ådahl <jadahl@gmail.com>
+ */
+
+#include "config.h"
+
+#include "backends/x11/nested/meta-cursor-renderer-x11-nested.h"
+
+#include "backends/x11/meta-backend-x11.h"
+
+struct _MetaCursorRendererX11Nested
+{
+  MetaCursorRenderer parent;
+};
+
+GType meta_cursor_renderer_x11_nested_get_type (void) G_GNUC_CONST;
+
+G_DEFINE_TYPE (MetaCursorRendererX11Nested, meta_cursor_renderer_x11_nested,
+               META_TYPE_CURSOR_RENDERER);
+
+static gboolean
+meta_cursor_renderer_x11_nested_update_cursor (MetaCursorRenderer *renderer,
+                                               MetaCursorSprite   *cursor_sprite)
+{
+  if (cursor_sprite)
+    meta_cursor_sprite_realize_texture (cursor_sprite);
+  return FALSE;
+}
+
+static Cursor
+create_empty_cursor (Display *xdisplay)
+{
+  XcursorImage *image;
+  XcursorPixel *pixels;
+  Cursor xcursor;
+
+  image = XcursorImageCreate (1, 1);
+  if (image == NULL)
+    return None;
+
+  image->xhot = 0;
+  image->yhot = 0;
+
+  pixels = image->pixels;
+  pixels[0] = 0;
+
+  xcursor = XcursorImageLoadCursor (xdisplay, image);
+  XcursorImageDestroy (image);
+
+  return xcursor;
+}
+
+static void
+meta_cursor_renderer_x11_nested_init (MetaCursorRendererX11Nested *x11_nested)
+{
+  MetaBackendX11 *backend = META_BACKEND_X11 (meta_get_backend ());
+  Window xwindow = meta_backend_x11_get_xwindow (backend);
+  Display *xdisplay = meta_backend_x11_get_xdisplay (backend);
+
+  Cursor empty_xcursor = create_empty_cursor (xdisplay);
+  XDefineCursor (xdisplay, xwindow, empty_xcursor);
+  XFreeCursor (xdisplay, empty_xcursor);
+}
+
+static void
+meta_cursor_renderer_x11_nested_class_init (MetaCursorRendererX11NestedClass *klass)
+{
+  MetaCursorRendererClass *renderer_class = META_CURSOR_RENDERER_CLASS (klass);
+
+  renderer_class->update_cursor = meta_cursor_renderer_x11_nested_update_cursor;
+}

src/backends/x11/nested/meta-cursor-renderer-x11-nested.h

@@ -0,0 +1,38 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/*
+ * Copyright (C) 2015 Red Hat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by:
+ *     Jonas Ådahl <jadahl@gmail.com>
+ */
+
+#ifndef META_CURSOR_RENDERER_X11_NESTED_NESTED_H
+#define META_CURSOR_RENDERER_X11_NESTED_NESTED_H
+
+#include <glib-object.h>
+
+#include "backends/meta-cursor-renderer.h"
+
+#define META_TYPE_CURSOR_RENDERER_X11_NESTED (meta_cursor_renderer_x11_nested_get_type ())
+G_DECLARE_FINAL_TYPE (MetaCursorRendererX11Nested,
+                      meta_cursor_renderer_x11_nested,
+                      META, CURSOR_RENDERER_X11_NESTED,
+                      MetaCursorRenderer);
+
+#endif /* META_CURSOR_RENDERER_X11_NESTED_NESTED_H */

src/compositor/compositor-private.h

@@ -15,7 +15,8 @@ struct _MetaCompositor
 {
   MetaDisplay    *display;
 
-  guint           repaint_func_id;
+  guint           pre_paint_func_id;
+  guint           post_paint_func_id;
 
   gint64          server_time_query_time;
   gint64          server_time_offset;
@@ -40,6 +41,7 @@ struct _MetaCompositor
   MetaPluginManager *plugin_mgr;
 
   gboolean frame_has_updated_xsurfaces;
+  gboolean have_x11_sync_object;
 };
 
 /* Wait 2ms after vblank before starting to draw next frame */

src/compositor/compositor.c

@@ -74,6 +74,7 @@
 #include "frame.h"
 #include <X11/extensions/shape.h>
 #include <X11/extensions/Xcomposite.h>
+#include "meta-sync-ring.h"
 
 #include "backends/x11/meta-backend-x11.h"
 
@@ -120,7 +121,11 @@ meta_switch_workspace_completed (MetaCompositor *compositor)
 void
 meta_compositor_destroy (MetaCompositor *compositor)
 {
-  clutter_threads_remove_repaint_func (compositor->repaint_func_id);
+  clutter_threads_remove_repaint_func (compositor->pre_paint_func_id);
+  clutter_threads_remove_repaint_func (compositor->post_paint_func_id);
+
+  if (compositor->have_x11_sync_object)
+    meta_sync_ring_destroy ();
 }
 
 static void
@@ -463,13 +468,11 @@ meta_compositor_manage (MetaCompositor *compositor)
   MetaDisplay *display = compositor->display;
   Display *xdisplay = display->xdisplay;
   MetaScreen *screen = display->screen;
+  MetaBackend *backend = meta_get_backend ();
 
   meta_screen_set_cm_selection (display->screen);
 
-  {
-    MetaBackend *backend = meta_get_backend ();
-    compositor->stage = meta_backend_get_stage (backend);
-  }
+  compositor->stage = meta_backend_get_stage (backend);
 
   /* We use connect_after() here to accomodate code in GNOME Shell that,
    * when benchmarking drawing performance, connects to ::after-paint
@@ -505,7 +508,7 @@ meta_compositor_manage (MetaCompositor *compositor)
 
       compositor->output = screen->composite_overlay_window;
 
-      xwin = meta_backend_x11_get_xwindow (META_BACKEND_X11 (meta_get_backend ()));
+      xwin = meta_backend_x11_get_xwindow (META_BACKEND_X11 (backend));
 
       XReparentWindow (xdisplay, xwin, compositor->output, 0, 0);
 
@@ -525,6 +528,8 @@ meta_compositor_manage (MetaCompositor *compositor)
        * contents until we show the stage.
        */
       XMapWindow (xdisplay, compositor->output);
+
+      compositor->have_x11_sync_object = meta_sync_ring_init (xdisplay);
     }
 
   redirect_windows (display->screen);
@@ -726,6 +731,9 @@ meta_compositor_process_event (MetaCompositor *compositor,
         process_damage (compositor, (XDamageNotifyEvent *) event, window);
     }
 
+  if (compositor->have_x11_sync_object)
+    meta_sync_ring_handle_event (event);
+
   /* Clutter needs to know about MapNotify events otherwise it will
      think the stage is invisible */
   if (!meta_is_wayland_compositor () && event->type == MapNotify)
@@ -1030,11 +1038,12 @@ frame_callback (CoglOnscreen  *onscreen,
     }
 }
 
-static void
-pre_paint_windows (MetaCompositor *compositor)
+static gboolean
+meta_pre_paint_func (gpointer data)
 {
   GList *l;
   MetaWindowActor *top_window;
+  MetaCompositor *compositor = data;
 
   if (compositor->onscreen == NULL)
     {
@@ -1046,7 +1055,7 @@ pre_paint_windows (MetaCompositor *compositor)
     }
 
   if (compositor->windows == NULL)
-    return;
+    return TRUE;
 
   top_window = g_list_last (compositor->windows)->data;
 
@@ -1063,10 +1072,12 @@ pre_paint_windows (MetaCompositor *compositor)
     {
       /* We need to make sure that any X drawing that happens before
        * the XDamageSubtract() for each window above is visible to
-       * subsequent GL rendering; the only standardized way to do this
-       * is EXT_x11_sync_object, which isn't yet widely available. For
-       * now, we count on details of Xorg and the open source drivers,
-       * and hope for the best otherwise.
+       * subsequent GL rendering; the standardized way to do this is
+       * GL_EXT_X11_sync_object. Since this isn't implemented yet in
+       * mesa, we also have a path that relies on the implementation
+       * of the open source drivers.
+       *
+       * Anything else, we just hope for the best.
        *
        * Xorg and open source driver specifics:
        *
@@ -1081,17 +1092,28 @@ pre_paint_windows (MetaCompositor *compositor)
        * round trip request at this point is sufficient to flush the
        * GLX buffers.
        */
-      XSync (compositor->display->xdisplay, False);
-
-      compositor->frame_has_updated_xsurfaces = FALSE;
+      if (compositor->have_x11_sync_object)
+        compositor->have_x11_sync_object = meta_sync_ring_insert_wait ();
+      else
+        XSync (compositor->display->xdisplay, False);
     }
+
+  return TRUE;
 }
 
 static gboolean
-meta_repaint_func (gpointer data)
+meta_post_paint_func (gpointer data)
 {
   MetaCompositor *compositor = data;
-  pre_paint_windows (compositor);
+
+  if (compositor->frame_has_updated_xsurfaces)
+    {
+      if (compositor->have_x11_sync_object)
+        compositor->have_x11_sync_object = meta_sync_ring_after_frame ();
+
+      compositor->frame_has_updated_xsurfaces = FALSE;
+    }
+
   return TRUE;
 }
 
@@ -1126,10 +1148,16 @@ meta_compositor_new (MetaDisplay *display)
                     G_CALLBACK (on_shadow_factory_changed),
                     compositor);
 
-  compositor->repaint_func_id = clutter_threads_add_repaint_func (meta_repaint_func,
-                                                                  compositor,
-                                                                  NULL);
-
+  compositor->pre_paint_func_id =
+    clutter_threads_add_repaint_func_full (CLUTTER_REPAINT_FLAGS_PRE_PAINT,
+                                           meta_pre_paint_func,
+                                           compositor,
+                                           NULL);
+  compositor->post_paint_func_id =
+    clutter_threads_add_repaint_func_full (CLUTTER_REPAINT_FLAGS_POST_PAINT,
+                                           meta_post_paint_func,
+                                           compositor,
+                                           NULL);
   return compositor;
 }
 

src/compositor/meta-background.c

@@ -22,6 +22,8 @@
 #include "meta-background-private.h"
 #include "cogl-utils.h"
 
+#include <string.h>
+
 enum
 {
   CHANGED,
@@ -71,6 +73,8 @@ enum
 
 G_DEFINE_TYPE (MetaBackground, meta_background, G_TYPE_OBJECT)
 
+static gboolean texture_has_alpha (CoglTexture *texture);
+
 static GSList *all_backgrounds = NULL;
 
 static void
@@ -474,7 +478,7 @@ get_texture_area (MetaBackground          *self,
     }
 }
 
-static void
+static gboolean
 draw_texture (MetaBackground        *self,
               CoglFramebuffer       *framebuffer,
               CoglPipeline          *pipeline,
@@ -483,6 +487,7 @@ draw_texture (MetaBackground        *self,
 {
   MetaBackgroundPrivate *priv = self->priv;
   cairo_rectangle_int_t texture_area;
+  gboolean bare_region_visible;
 
   get_texture_area (self, monitor_area, texture, &texture_area);
 
@@ -503,6 +508,9 @@ draw_texture (MetaBackground        *self,
                                                 - texture_area.y / (float)texture_area.height,
                                                 (monitor_area->width - texture_area.x) / (float)texture_area.width,
                                                 (monitor_area->height - texture_area.y) / (float)texture_area.height);
+
+      bare_region_visible = texture_has_alpha (texture);
+
       /* Draw just the texture */
       break;
     case G_DESKTOP_BACKGROUND_STYLE_CENTERED:
@@ -513,11 +521,16 @@ draw_texture (MetaBackground        *self,
                                                 texture_area.x + texture_area.width,
                                                 texture_area.y + texture_area.height,
                                                 0, 0, 1.0, 1.0);
+      bare_region_visible = texture_has_alpha (texture) || memcmp (&texture_area, monitor_area, sizeof (cairo_rectangle_int_t)) != 0;
+      break;
     case G_DESKTOP_BACKGROUND_STYLE_NONE:
+      bare_region_visible = TRUE;
       break;
     default:
-      g_return_if_reached();
+      g_return_val_if_reached(FALSE);
     }
+
+  return bare_region_visible;
 }
 
 static void
@@ -748,6 +761,7 @@ meta_background_get_texture (MetaBackground         *self,
   if (monitor->dirty)
     {
       CoglError *catch_error = NULL;
+      gboolean bare_region_visible = FALSE;
 
       if (monitor->texture == NULL)
         {
@@ -783,9 +797,9 @@ meta_background_get_texture (MetaBackground         *self,
           cogl_pipeline_set_layer_texture (pipeline, 0, texture2);
           cogl_pipeline_set_layer_wrap_mode (pipeline, 0, get_wrap_mode (priv->style));
 
-          draw_texture (self,
-                        monitor->fbo, pipeline,
-                        texture2, &monitor_area);
+          bare_region_visible = draw_texture (self,
+                                              monitor->fbo, pipeline,
+                                              texture2, &monitor_area);
 
           cogl_object_unref (pipeline);
         }
@@ -796,8 +810,7 @@ meta_background_get_texture (MetaBackground         *self,
                                     0.0, 0.0, 0.0, 0.0);
         }
 
-      if (texture1 != NULL &&
-          !(texture2 != NULL && priv->blend_factor == 1.0 && !texture_has_alpha (texture2)))
+      if (texture1 != NULL && priv->blend_factor != 1.0)
         {
           CoglPipeline *pipeline = create_pipeline (PIPELINE_ADD);
           cogl_pipeline_set_color4f (pipeline,
@@ -808,15 +821,14 @@ meta_background_get_texture (MetaBackground         *self,
           cogl_pipeline_set_layer_texture (pipeline, 0, texture1);
           cogl_pipeline_set_layer_wrap_mode (pipeline, 0, get_wrap_mode (priv->style));
 
-          draw_texture (self,
-                        monitor->fbo, pipeline,
-                        texture1, &monitor_area);
+          bare_region_visible = bare_region_visible || draw_texture (self,
+                                                                     monitor->fbo, pipeline,
+                                                                     texture1, &monitor_area);
 
           cogl_object_unref (pipeline);
         }
 
-      if (!((texture2 != NULL && priv->blend_factor == 1.0 && !texture_has_alpha (texture2)) ||
-            (texture1 != NULL && !texture_has_alpha (texture1))))
+      if (bare_region_visible)
         {
           CoglPipeline *pipeline = create_pipeline (PIPELINE_OVER_REVERSE);
 

src/compositor/meta-surface-actor-wayland.c

@@ -39,6 +39,7 @@
 struct _MetaSurfaceActorWaylandPrivate
 {
   MetaWaylandSurface *surface;
+  struct wl_list frame_callback_list;
 };
 typedef struct _MetaSurfaceActorWaylandPrivate MetaSurfaceActorWaylandPrivate;
 
@@ -197,6 +198,10 @@ meta_surface_actor_wayland_sync_state (MetaSurfaceActorWayland *self)
                                            scaled_input_region);
       cairo_region_destroy (scaled_input_region);
     }
+  else
+    {
+      meta_surface_actor_set_input_region (META_SURFACE_ACTOR (self), NULL);
+    }
 
   /* Opaque region */
   if (surface->opaque_region)
@@ -212,6 +217,10 @@ meta_surface_actor_wayland_sync_state (MetaSurfaceActorWayland *self)
                                             scaled_opaque_region);
       cairo_region_destroy (scaled_opaque_region);
     }
+  else
+    {
+      meta_surface_actor_set_opaque_region (META_SURFACE_ACTOR (self), NULL);
+    }
 
   meta_surface_actor_wayland_sync_subsurface_state (self);
 }
@@ -271,12 +280,25 @@ meta_surface_actor_wayland_is_on_monitor (MetaSurfaceActorWayland *self,
   return is_on_monitor;
 }
 
+void
+meta_surface_actor_wayland_add_frame_callbacks (MetaSurfaceActorWayland *self,
+                                                struct wl_list *frame_callbacks)
+{
+  MetaSurfaceActorWaylandPrivate *priv = meta_surface_actor_wayland_get_instance_private (self);
+
+  wl_list_insert_list (&priv->frame_callback_list, frame_callbacks);
+}
+
 static MetaWindow *
 meta_surface_actor_wayland_get_window (MetaSurfaceActor *actor)
 {
   MetaSurfaceActorWaylandPrivate *priv = meta_surface_actor_wayland_get_instance_private (META_SURFACE_ACTOR_WAYLAND (actor));
+  MetaWaylandSurface *surface = priv->surface;
 
-  return priv->surface->window;
+  if (!surface)
+    return NULL;
+
+  return surface->window;
 }
 
 static void
@@ -323,7 +345,13 @@ meta_surface_actor_wayland_paint (ClutterActor *actor)
     meta_surface_actor_wayland_get_instance_private (self);
 
   if (priv->surface)
-    meta_wayland_surface_update_outputs (priv->surface);
+    {
+      MetaWaylandCompositor *compositor = priv->surface->compositor;
+      meta_wayland_surface_update_outputs (priv->surface);
+
+      wl_list_insert_list (&compositor->frame_callbacks, &priv->frame_callback_list);
+      wl_list_init (&priv->frame_callback_list);
+    }
 
   CLUTTER_ACTOR_CLASS (meta_surface_actor_wayland_parent_class)->paint (actor);
 }
@@ -375,6 +403,7 @@ meta_surface_actor_wayland_new (MetaWaylandSurface *surface)
 
   g_assert (meta_is_wayland_compositor ());
 
+  wl_list_init (&priv->frame_callback_list);
   priv->surface = surface;
 
   return META_SURFACE_ACTOR (self);
@@ -398,8 +427,14 @@ meta_surface_actor_wayland_get_surface (MetaSurfaceActorWayland *self)
 void
 meta_surface_actor_wayland_surface_destroyed (MetaSurfaceActorWayland *self)
 {
+  MetaWaylandFrameCallback *callback, *next;
   MetaSurfaceActorWaylandPrivate *priv =
     meta_surface_actor_wayland_get_instance_private (self);
 
+  wl_list_for_each_safe (callback, next, &priv->frame_callback_list, link)
+    {
+      wl_resource_destroy (callback->resource);
+    }
+
   priv->surface = NULL;
 }

src/compositor/meta-surface-actor-wayland.h

@@ -30,6 +30,7 @@
 #include "meta-surface-actor.h"
 
 #include "wayland/meta-wayland.h"
+#include "wayland/meta-wayland-private.h"
 
 #include "backends/meta-monitor-manager-private.h"
 
@@ -78,6 +79,9 @@ void meta_surface_actor_wayland_sync_subsurface_state (MetaSurfaceActorWayland *
 gboolean meta_surface_actor_wayland_is_on_monitor (MetaSurfaceActorWayland *self,
                                                    MetaMonitorInfo         *monitor);
 
+void meta_surface_actor_wayland_add_frame_callbacks (MetaSurfaceActorWayland *self,
+                                                     struct wl_list *frame_callbacks);
+
 G_END_DECLS
 
 #endif /* __META_SURFACE_ACTOR_WAYLAND_H__ */

src/compositor/meta-sync-ring.c

@@ -0,0 +1,592 @@
+/*
+ * This is based on an original C++ implementation for compiz that
+ * carries the following copyright notice:
+ *
+ *
+ * Copyright © 2011 NVIDIA Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of NVIDIA
+ * Corporation not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission.  NVIDIA Corporation makes no representations about the
+ * suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * NVIDIA CORPORATION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ *
+ * Authors: James Jones <jajones@nvidia.com>
+ */
+
+#include <string.h>
+
+#include <GL/gl.h>
+#include <GL/glx.h>
+#include <X11/extensions/sync.h>
+
+#include <cogl/cogl.h>
+#include <clutter/clutter.h>
+
+#include <meta/util.h>
+
+#include "meta-sync-ring.h"
+
+/* Theory of operation:
+ *
+ * We use a ring of NUM_SYNCS fence objects. On each frame we advance
+ * to the next fence in the ring. For each fence we do:
+ *
+ * 1. fence is XSyncTriggerFence()'d and glWaitSync()'d
+ * 2. NUM_SYNCS / 2 frames later, fence should be triggered
+ * 3. fence is XSyncResetFence()'d
+ * 4. NUM_SYNCS / 2 frames later, fence should be reset
+ * 5. go back to 1 and re-use fence
+ *
+ * glClientWaitSync() and XAlarms are used in steps 2 and 4,
+ * respectively, to double-check the expectections.
+ */
+
+#define NUM_SYNCS 10
+#define MAX_SYNC_WAIT_TIME (1 * 1000 * 1000 * 1000) /* one sec */
+#define MAX_REBOOT_ATTEMPTS 2
+
+typedef enum
+{
+  META_SYNC_STATE_READY,
+  META_SYNC_STATE_WAITING,
+  META_SYNC_STATE_DONE,
+  META_SYNC_STATE_RESET_PENDING,
+} MetaSyncState;
+
+typedef struct
+{
+  Display *xdisplay;
+
+  XSyncFence xfence;
+  GLsync gl_x11_sync;
+  GLsync gpu_fence;
+
+  XSyncCounter xcounter;
+  XSyncAlarm xalarm;
+  XSyncValue next_counter_value;
+
+  MetaSyncState state;
+} MetaSync;
+
+typedef struct
+{
+  Display *xdisplay;
+  int xsync_event_base;
+  int xsync_error_base;
+
+  GHashTable *alarm_to_sync;
+
+  MetaSync *syncs_array[NUM_SYNCS];
+  guint current_sync_idx;
+  MetaSync *current_sync;
+  guint warmup_syncs;
+
+  guint reboots;
+} MetaSyncRing;
+
+static MetaSyncRing meta_sync_ring = { 0 };
+
+static XSyncValue SYNC_VALUE_ZERO;
+static XSyncValue SYNC_VALUE_ONE;
+
+static const char*      (*meta_gl_get_string) (GLenum name);
+static void             (*meta_gl_get_integerv) (GLenum  pname,
+                                                 GLint  *params);
+static const char*      (*meta_gl_get_stringi) (GLenum name,
+                                                GLuint index);
+static void             (*meta_gl_delete_sync) (GLsync sync);
+static GLenum           (*meta_gl_client_wait_sync) (GLsync sync,
+                                                     GLbitfield flags,
+                                                     GLuint64 timeout);
+static void             (*meta_gl_wait_sync) (GLsync sync,
+                                              GLbitfield flags,
+                                              GLuint64 timeout);
+static GLsync           (*meta_gl_import_sync) (GLenum external_sync_type,
+                                                GLintptr external_sync,
+                                                GLbitfield flags);
+static GLsync           (*meta_gl_fence_sync) (GLenum condition,
+                                               GLbitfield flags);
+
+static MetaSyncRing *
+meta_sync_ring_get (void)
+{
+  if (meta_sync_ring.reboots > MAX_REBOOT_ATTEMPTS)
+    return NULL;
+
+  return &meta_sync_ring;
+}
+
+static gboolean
+load_gl_symbol (const char  *name,
+                void       **func)
+{
+  *func = cogl_get_proc_address (name);
+  if (!*func)
+    {
+      meta_verbose ("MetaSyncRing: failed to resolve required GL symbol \"%s\"\n", name);
+      return FALSE;
+    }
+  return TRUE;
+}
+
+static gboolean
+check_gl_extensions (void)
+{
+  ClutterBackend *backend;
+  CoglContext *cogl_context;
+  CoglDisplay *cogl_display;
+  CoglRenderer *cogl_renderer;
+
+  backend = clutter_get_default_backend ();
+  cogl_context = clutter_backend_get_cogl_context (backend);
+  cogl_display = cogl_context_get_display (cogl_context);
+  cogl_renderer = cogl_display_get_renderer (cogl_display);
+
+  switch (cogl_renderer_get_driver (cogl_renderer))
+    {
+    case COGL_DRIVER_GL3:
+      {
+        int num_extensions, i;
+        gboolean arb_sync = FALSE;
+        gboolean x11_sync_object = FALSE;
+
+        meta_gl_get_integerv (GL_NUM_EXTENSIONS, &num_extensions);
+
+        for (i = 0; i < num_extensions; ++i)
+          {
+            const char *ext = meta_gl_get_stringi (GL_EXTENSIONS, i);
+
+            if (g_strcmp0 ("GL_ARB_sync", ext) == 0)
+              arb_sync = TRUE;
+            else if (g_strcmp0 ("GL_EXT_x11_sync_object", ext) == 0)
+              x11_sync_object = TRUE;
+          }
+
+        return arb_sync && x11_sync_object;
+      }
+    case COGL_DRIVER_GL:
+      {
+        const char *extensions = meta_gl_get_string (GL_EXTENSIONS);
+        return (extensions != NULL &&
+                strstr (extensions, "GL_ARB_sync") != NULL &&
+                strstr (extensions, "GL_EXT_x11_sync_object") != NULL);
+      }
+    default:
+      break;
+    }
+
+  return FALSE;
+}
+
+static gboolean
+load_required_symbols (void)
+{
+  static gboolean success = FALSE;
+
+  if (success)
+    return TRUE;
+
+  /* We don't link against libGL directly because cogl may want to
+   * use something else. This assumes that cogl has been initialized
+   * and dynamically loaded libGL at this point.
+   */
+
+  if (!load_gl_symbol ("glGetString", (void **) &meta_gl_get_string))
+    goto out;
+  if (!load_gl_symbol ("glGetIntegerv", (void **) &meta_gl_get_integerv))
+    goto out;
+  if (!load_gl_symbol ("glGetStringi", (void **) &meta_gl_get_stringi))
+    goto out;
+
+  if (!check_gl_extensions ())
+    {
+      meta_verbose ("MetaSyncRing: couldn't find required GL extensions\n");
+      goto out;
+    }
+
+  if (!load_gl_symbol ("glDeleteSync", (void **) &meta_gl_delete_sync))
+    goto out;
+  if (!load_gl_symbol ("glClientWaitSync", (void **) &meta_gl_client_wait_sync))
+    goto out;
+  if (!load_gl_symbol ("glWaitSync", (void **) &meta_gl_wait_sync))
+    goto out;
+  if (!load_gl_symbol ("glImportSyncEXT", (void **) &meta_gl_import_sync))
+    goto out;
+  if (!load_gl_symbol ("glFenceSync", (void **) &meta_gl_fence_sync))
+    goto out;
+
+  success = TRUE;
+ out:
+  return success;
+}
+
+static void
+meta_sync_insert (MetaSync *self)
+{
+  g_return_if_fail (self->state == META_SYNC_STATE_READY);
+
+  XSyncTriggerFence (self->xdisplay, self->xfence);
+  XFlush (self->xdisplay);
+
+  meta_gl_wait_sync (self->gl_x11_sync, 0, GL_TIMEOUT_IGNORED);
+  self->gpu_fence = meta_gl_fence_sync (GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
+
+  self->state = META_SYNC_STATE_WAITING;
+}
+
+static GLenum
+meta_sync_check_update_finished (MetaSync *self,
+                                 GLuint64  timeout)
+{
+  GLenum status = GL_WAIT_FAILED;
+
+  switch (self->state)
+    {
+    case META_SYNC_STATE_DONE:
+      status = GL_ALREADY_SIGNALED;
+      break;
+    case META_SYNC_STATE_WAITING:
+      status = meta_gl_client_wait_sync (self->gpu_fence, 0, timeout);
+      if (status == GL_ALREADY_SIGNALED || status == GL_CONDITION_SATISFIED)
+        {
+          self->state = META_SYNC_STATE_DONE;
+          meta_gl_delete_sync (self->gpu_fence);
+          self->gpu_fence = 0;
+        }
+      break;
+    default:
+      break;
+    }
+
+  g_warn_if_fail (status != GL_WAIT_FAILED);
+
+  return status;
+}
+
+static void
+meta_sync_reset (MetaSync *self)
+{
+  XSyncAlarmAttributes attrs;
+  int overflow;
+
+  g_return_if_fail (self->state == META_SYNC_STATE_DONE);
+
+  XSyncResetFence (self->xdisplay, self->xfence);
+
+  attrs.trigger.wait_value = self->next_counter_value;
+
+  XSyncChangeAlarm (self->xdisplay, self->xalarm, XSyncCAValue, &attrs);
+  XSyncSetCounter (self->xdisplay, self->xcounter, self->next_counter_value);
+
+  XSyncValueAdd (&self->next_counter_value,
+                 self->next_counter_value,
+                 SYNC_VALUE_ONE,
+                 &overflow);
+
+  self->state = META_SYNC_STATE_RESET_PENDING;
+}
+
+static void
+meta_sync_handle_event (MetaSync              *self,
+                        XSyncAlarmNotifyEvent *event)
+{
+  g_return_if_fail (event->alarm == self->xalarm);
+  g_return_if_fail (self->state == META_SYNC_STATE_RESET_PENDING);
+
+  self->state = META_SYNC_STATE_READY;
+}
+
+static MetaSync *
+meta_sync_new (Display *xdisplay)
+{
+  MetaSync *self;
+  XSyncAlarmAttributes attrs;
+
+  self = g_malloc0 (sizeof (MetaSync));
+
+  self->xdisplay = xdisplay;
+
+  self->xfence = XSyncCreateFence (xdisplay, DefaultRootWindow (xdisplay), FALSE);
+  self->gl_x11_sync = 0;
+  self->gpu_fence = 0;
+
+  self->xcounter = XSyncCreateCounter (xdisplay, SYNC_VALUE_ZERO);
+
+  attrs.trigger.counter = self->xcounter;
+  attrs.trigger.value_type = XSyncAbsolute;
+  attrs.trigger.wait_value = SYNC_VALUE_ONE;
+  attrs.trigger.test_type = XSyncPositiveTransition;
+  attrs.events = TRUE;
+  self->xalarm = XSyncCreateAlarm (xdisplay,
+                                   XSyncCACounter |
+                                   XSyncCAValueType |
+                                   XSyncCAValue |
+                                   XSyncCATestType |
+                                   XSyncCAEvents,
+                                   &attrs);
+
+  XSyncIntToValue (&self->next_counter_value, 1);
+
+  self->state = META_SYNC_STATE_READY;
+
+  return self;
+}
+
+static void
+meta_sync_import (MetaSync *self)
+{
+  g_return_if_fail (self->gl_x11_sync == 0);
+  self->gl_x11_sync = meta_gl_import_sync (GL_SYNC_X11_FENCE_EXT, self->xfence, 0);
+}
+
+static Bool
+alarm_event_predicate (Display  *dpy,
+                       XEvent   *event,
+                       XPointer  data)
+{
+  MetaSyncRing *ring = meta_sync_ring_get ();
+
+  if (!ring)
+    return False;
+
+  if (event->type == ring->xsync_event_base + XSyncAlarmNotify)
+    {
+      if (((MetaSync *) data)->xalarm == ((XSyncAlarmNotifyEvent *) event)->alarm)
+        return True;
+    }
+  return False;
+}
+
+static void
+meta_sync_free (MetaSync *self)
+{
+  /* When our assumptions don't hold, something has gone wrong but we
+   * don't know what, so we reboot the ring. While doing that, we
+   * trigger fences before deleting them to try to get ourselves out
+   * of a potentially stuck GPU state.
+   */
+  switch (self->state)
+    {
+    case META_SYNC_STATE_WAITING:
+      meta_gl_delete_sync (self->gpu_fence);
+      break;
+    case META_SYNC_STATE_DONE:
+      /* nothing to do */
+      break;
+    case META_SYNC_STATE_RESET_PENDING:
+      {
+        XEvent event;
+        XIfEvent (self->xdisplay, &event, alarm_event_predicate, (XPointer) self);
+        meta_sync_handle_event (self, (XSyncAlarmNotifyEvent *) &event);
+      }
+      /* fall through */
+    case META_SYNC_STATE_READY:
+      XSyncTriggerFence (self->xdisplay, self->xfence);
+      XFlush (self->xdisplay);
+      break;
+    default:
+      break;
+    }
+
+  meta_gl_delete_sync (self->gl_x11_sync);
+  XSyncDestroyFence (self->xdisplay, self->xfence);
+  XSyncDestroyCounter (self->xdisplay, self->xcounter);
+  XSyncDestroyAlarm (self->xdisplay, self->xalarm);
+
+  g_free (self);
+}
+
+gboolean
+meta_sync_ring_init (Display *xdisplay)
+{
+  gint major, minor;
+  guint i;
+  MetaSyncRing *ring = meta_sync_ring_get ();
+
+  if (!ring)
+    return FALSE;
+
+  g_return_val_if_fail (xdisplay != NULL, FALSE);
+  g_return_val_if_fail (ring->xdisplay == NULL, FALSE);
+
+  if (!load_required_symbols ())
+    return FALSE;
+
+  if (!XSyncQueryExtension (xdisplay, &ring->xsync_event_base, &ring->xsync_error_base) ||
+      !XSyncInitialize (xdisplay, &major, &minor))
+    return FALSE;
+
+  XSyncIntToValue (&SYNC_VALUE_ZERO, 0);
+  XSyncIntToValue (&SYNC_VALUE_ONE, 1);
+
+  ring->xdisplay = xdisplay;
+
+  ring->alarm_to_sync = g_hash_table_new (NULL, NULL);
+
+  for (i = 0; i < NUM_SYNCS; ++i)
+    {
+      MetaSync *sync = meta_sync_new (ring->xdisplay);
+      ring->syncs_array[i] = sync;
+      g_hash_table_replace (ring->alarm_to_sync, (gpointer) sync->xalarm, sync);
+    }
+  /* Since the connection we create the X fences on isn't the same as
+   * the one used for the GLX context, we need to XSync() here to
+   * ensure glImportSync() succeeds. */
+  XSync (xdisplay, False);
+  for (i = 0; i < NUM_SYNCS; ++i)
+    meta_sync_import (ring->syncs_array[i]);
+
+  ring->current_sync_idx = 0;
+  ring->current_sync = ring->syncs_array[0];
+  ring->warmup_syncs = 0;
+
+  return TRUE;
+}
+
+void
+meta_sync_ring_destroy (void)
+{
+  guint i;
+  MetaSyncRing *ring = meta_sync_ring_get ();
+
+  if (!ring)
+    return;
+
+  g_return_if_fail (ring->xdisplay != NULL);
+
+  ring->current_sync_idx = 0;
+  ring->current_sync = NULL;
+  ring->warmup_syncs = 0;
+
+  for (i = 0; i < NUM_SYNCS; ++i)
+    meta_sync_free (ring->syncs_array[i]);
+
+  g_hash_table_destroy (ring->alarm_to_sync);
+
+  ring->xsync_event_base = 0;
+  ring->xsync_error_base = 0;
+  ring->xdisplay = NULL;
+}
+
+static gboolean
+meta_sync_ring_reboot (Display *xdisplay)
+{
+  MetaSyncRing *ring = meta_sync_ring_get ();
+
+  if (!ring)
+    return FALSE;
+
+  meta_sync_ring_destroy ();
+
+  ring->reboots += 1;
+
+  if (!meta_sync_ring_get ())
+    {
+      meta_warning ("MetaSyncRing: Too many reboots -- disabling\n");
+      return FALSE;
+    }
+
+  return meta_sync_ring_init (xdisplay);
+}
+
+gboolean
+meta_sync_ring_after_frame (void)
+{
+  MetaSyncRing *ring = meta_sync_ring_get ();
+
+  if (!ring)
+    return FALSE;
+
+  g_return_val_if_fail (ring->xdisplay != NULL, FALSE);
+
+  if (ring->warmup_syncs >= NUM_SYNCS / 2)
+    {
+      guint reset_sync_idx = (ring->current_sync_idx + NUM_SYNCS - (NUM_SYNCS / 2)) % NUM_SYNCS;
+      MetaSync *sync_to_reset = ring->syncs_array[reset_sync_idx];
+
+      GLenum status = meta_sync_check_update_finished (sync_to_reset, 0);
+      if (status == GL_TIMEOUT_EXPIRED)
+        {
+          meta_warning ("MetaSyncRing: We should never wait for a sync -- add more syncs?\n");
+          status = meta_sync_check_update_finished (sync_to_reset, MAX_SYNC_WAIT_TIME);
+        }
+
+      if (status != GL_ALREADY_SIGNALED && status != GL_CONDITION_SATISFIED)
+        {
+          meta_warning ("MetaSyncRing: Timed out waiting for sync object.\n");
+          return meta_sync_ring_reboot (ring->xdisplay);
+        }
+
+      meta_sync_reset (sync_to_reset);
+    }
+  else
+    {
+      ring->warmup_syncs += 1;
+    }
+
+  ring->current_sync_idx += 1;
+  ring->current_sync_idx %= NUM_SYNCS;
+
+  ring->current_sync = ring->syncs_array[ring->current_sync_idx];
+
+  return TRUE;
+}
+
+gboolean
+meta_sync_ring_insert_wait (void)
+{
+  MetaSyncRing *ring = meta_sync_ring_get ();
+
+  if (!ring)
+    return FALSE;
+
+  g_return_val_if_fail (ring->xdisplay != NULL, FALSE);
+
+  if (ring->current_sync->state != META_SYNC_STATE_READY)
+    {
+      meta_warning ("MetaSyncRing: Sync object is not ready -- were events handled properly?\n");
+      if (!meta_sync_ring_reboot (ring->xdisplay))
+        return FALSE;
+    }
+
+  meta_sync_insert (ring->current_sync);
+
+  return TRUE;
+}
+
+void
+meta_sync_ring_handle_event (XEvent *xevent)
+{
+  XSyncAlarmNotifyEvent *event;
+  MetaSync *sync;
+  MetaSyncRing *ring = meta_sync_ring_get ();
+
+  if (!ring)
+    return;
+
+  g_return_if_fail (ring->xdisplay != NULL);
+
+  if (xevent->type != (ring->xsync_event_base + XSyncAlarmNotify))
+    return;
+
+  event = (XSyncAlarmNotifyEvent *) xevent;
+
+  sync = g_hash_table_lookup (ring->alarm_to_sync, (gpointer) event->alarm);
+  if (sync)
+    meta_sync_handle_event (sync, event);
+}

src/compositor/meta-sync-ring.h

@@ -0,0 +1,14 @@
+#ifndef _META_SYNC_RING_H_
+#define _META_SYNC_RING_H_
+
+#include <glib.h>
+
+#include <X11/Xlib.h>
+
+gboolean meta_sync_ring_init (Display *dpy);
+void meta_sync_ring_destroy (void);
+gboolean meta_sync_ring_after_frame (void);
+gboolean meta_sync_ring_insert_wait (void);
+void meta_sync_ring_handle_event (XEvent *event);
+
+#endif  /* _META_SYNC_RING_H_ */

src/core/constraints.c

@@ -493,11 +493,10 @@ place_window_if_needed(MetaWindow     *window,
   if (window->placed || did_placement)
     {
       if (window->maximize_horizontally_after_placement ||
-          window->maximize_vertically_after_placement   ||
-          window->fullscreen_after_placement)
+          window->maximize_vertically_after_placement)
         {
-          /* define a sane saved_rect so that the user can unmaximize or
-           * make unfullscreen to something reasonable.
+          /* define a sane saved_rect so that the user can unmaximize to
+           * something reasonable.
            */
           if (info->current.width >= info->work_area_monitor.width)
             {
@@ -525,15 +524,6 @@ place_window_if_needed(MetaWindow     *window,
                 (window->maximize_vertically_after_placement ?
                  META_MAXIMIZE_VERTICAL : 0), &info->current);
 
-          if (window->fullscreen_after_placement)
-            {
-              window->saved_rect = info->current;
-              window->fullscreen = TRUE;
-              window->fullscreen_after_placement = FALSE;
-
-              g_object_notify (G_OBJECT (window), "fullscreen");
-            }
-
           window->maximize_horizontally_after_placement = FALSE;
           window->maximize_vertically_after_placement = FALSE;
         }

src/core/screen-private.h

@@ -152,6 +152,10 @@ const MetaMonitorInfo* meta_screen_get_monitor_for_rect   (MetaScreen    *screen
 const MetaMonitorInfo* meta_screen_calculate_monitor_for_window (MetaScreen    *screen,
                                                                  MetaWindow    *window);
 
+const MetaMonitorInfo* meta_screen_get_monitor_for_point (MetaScreen    *screen,
+                                                          int            x,
+                                                          int            y);
+
 
 const MetaMonitorInfo* meta_screen_get_monitor_neighbor (MetaScreen *screen,
                                                          int         which_monitor,

src/core/screen.c

@@ -43,6 +43,7 @@
 #include <meta/meta-enum-types.h>
 #include "core.h"
 #include "meta-cursor-tracker-private.h"
+#include "boxes-private.h"
 
 #include <X11/extensions/Xinerama.h>
 #include <X11/extensions/Xcomposite.h>
@@ -1255,21 +1256,47 @@ update_num_workspaces (MetaScreen *screen,
   g_object_notify (G_OBJECT (screen), "n-workspaces");
 }
 
+static void
+root_cursor_prepare_at (MetaCursorSprite *cursor_sprite,
+                        int x,
+                        int y,
+                        MetaScreen *screen)
+{
+  const MetaMonitorInfo *monitor;
+
+  monitor = meta_screen_get_monitor_for_point (screen, x, y);
+
+  /* Reload the cursor texture if the scale has changed. */
+  meta_cursor_sprite_set_theme_scale (cursor_sprite, monitor->scale);
+}
+
+static void
+manage_root_cursor_sprite_scale (MetaScreen *screen,
+                                 MetaCursorSprite *cursor_sprite)
+{
+  g_signal_connect_object (cursor_sprite,
+                           "prepare-at",
+                           G_CALLBACK (root_cursor_prepare_at),
+                           screen,
+                           0);
+}
+
 void
 meta_screen_update_cursor (MetaScreen *screen)
 {
   MetaDisplay *display = screen->display;
   MetaCursor cursor = screen->current_cursor;
   Cursor xcursor;
-  MetaCursorReference *cursor_ref;
+  MetaCursorSprite *cursor_sprite;
   MetaCursorTracker *tracker = meta_cursor_tracker_get_for_screen (screen);
 
-  cursor_ref = meta_cursor_reference_from_theme (cursor);
-  if (cursor_ref == NULL)
-    meta_fatal ("Could not find cursor. Perhaps set XCURSOR_PATH?");
+  cursor_sprite = meta_cursor_sprite_from_theme (cursor);
 
-  meta_cursor_tracker_set_root_cursor (tracker, cursor_ref);
-  meta_cursor_reference_unref (cursor_ref);
+  if (meta_is_wayland_compositor ())
+    manage_root_cursor_sprite_scale (screen, cursor_sprite);
+
+  meta_cursor_tracker_set_root_cursor (tracker, cursor_sprite);
+  g_object_unref (cursor_sprite);
 
   /* Set a cursor for X11 applications that don't specify their own */
   xcursor = meta_display_create_x_cursor (display, cursor);
@@ -1457,6 +1484,25 @@ meta_screen_get_monitor_index_for_rect (MetaScreen    *screen,
   return monitor->number;
 }
 
+const MetaMonitorInfo *
+meta_screen_get_monitor_for_point (MetaScreen *screen,
+                                   int         x,
+                                   int         y)
+{
+  int i;
+
+  if (screen->n_monitor_infos == 1)
+    return &screen->monitor_infos[0];
+
+  for (i = 0; i < screen->n_monitor_infos; i++)
+    {
+      if (POINT_IN_RECT (x, y, screen->monitor_infos[i].rect))
+        return &screen->monitor_infos[i];
+    }
+
+  return NULL;
+}
+
 const MetaMonitorInfo*
 meta_screen_get_monitor_neighbor (MetaScreen         *screen,
                                   int                 which_monitor,

src/core/window-private.h

@@ -176,9 +176,6 @@ struct _MetaWindow
   /* Whether the window is marked as urgent */
   guint urgent : 1;
 
-  /* Whether we have to fullscreen after placement */
-  guint fullscreen_after_placement : 1;
-
   /* Area to cover when in fullscreen mode.  If _NET_WM_FULLSCREEN_MONITORS has
    * been overridden (via a client message), the window will cover the union of
    * these monitors.  If not, this is the single monitor which the window's

src/core/window.c

@@ -880,7 +880,6 @@ _meta_window_shared_new (MetaDisplay         *display,
   window->maximize_vertically_after_placement = FALSE;
   window->minimize_after_placement = FALSE;
   window->fullscreen = FALSE;
-  window->fullscreen_after_placement = FALSE;
   window->fullscreen_monitors[0] = -1;
   window->require_fully_onscreen = TRUE;
   window->require_on_single_monitor = TRUE;

src/wayland/meta-wayland-data-device.c

@@ -537,11 +537,14 @@ data_device_start_drag (struct wl_client *client,
     drag_source = wl_resource_get_user_data (source_resource);
 
   if (icon_resource &&
-      meta_wayland_surface_set_role (icon_surface,
-                                     META_WAYLAND_SURFACE_ROLE_DND,
-                                     resource,
-                                     WL_DATA_DEVICE_ERROR_ROLE) != 0)
-    return;
+      !meta_wayland_surface_assign_role (icon_surface,
+                                         META_TYPE_WAYLAND_SURFACE_ROLE_DND))
+    {
+      wl_resource_post_error (resource, WL_DATA_DEVICE_ERROR_ROLE,
+                              "wl_surface@%d already has a different role",
+                              wl_resource_get_id (icon_resource));
+      return;
+    }
 
   meta_wayland_pointer_set_focus (&seat->pointer, NULL);
   meta_wayland_data_device_start_drag (data_device, client,

src/wayland/meta-wayland-keyboard.c

@@ -477,6 +477,34 @@ meta_wayland_keyboard_handle_event (MetaWaylandKeyboard *keyboard,
   return handled;
 }
 
+void
+meta_wayland_keyboard_update_key_state (MetaWaylandKeyboard *keyboard,
+                                        char                *key_vector,
+                                        int                  key_vector_len,
+                                        int                  offset)
+{
+  gboolean mods_changed = FALSE;
+
+  int i;
+  for (i = offset; i < key_vector_len * 8; i++)
+    {
+      gboolean set = (key_vector[i/8] & (1 << (i % 8))) != 0;
+
+      /* The 'offset' parameter allows the caller to have the indices
+       * into key_vector to either be X-style (base 8) or evdev (base 0), or
+       * something else (unlikely). We subtract 'offset' to convert to evdev
+       * style, then add 8 to convert the "evdev" style keycode back to
+       * the X-style that xkbcommon expects.
+       */
+      mods_changed |= xkb_state_update_key (keyboard->xkb_info.state,
+                                            i - offset + 8,
+                                            set ? XKB_KEY_DOWN : XKB_KEY_UP);
+    }
+
+  if (mods_changed)
+    notify_modifiers (keyboard);
+}
+
 static void
 move_resources (struct wl_list *destination, struct wl_list *source)
 {

src/wayland/meta-wayland-keyboard.h

@@ -85,6 +85,10 @@ void meta_wayland_keyboard_update (MetaWaylandKeyboard *keyboard,
 
 gboolean meta_wayland_keyboard_handle_event (MetaWaylandKeyboard *keyboard,
                                              const ClutterKeyEvent *event);
+void meta_wayland_keyboard_update_key_state (MetaWaylandKeyboard *compositor,
+                                             char                *key_vector,
+                                             int                  key_vector_len,
+                                             int                  offset);
 
 void meta_wayland_keyboard_set_focus (MetaWaylandKeyboard *keyboard,
                                       MetaWaylandSurface *surface);

src/wayland/meta-wayland-pointer-gesture-pinch.c

@@ -0,0 +1,160 @@
+/*
+ * Wayland Support
+ *
+ * Copyright (C) 2015 Red Hat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Author: Carlos Garnacho <carlosg@gnome.org>
+ */
+
+#define _GNU_SOURCE
+
+#include "config.h"
+
+#include <glib.h>
+
+#include "meta-wayland-pointer-gesture-pinch.h"
+#include "meta-wayland-pointer.h"
+#include "meta-wayland-surface.h"
+#include "pointer-gestures-server-protocol.h"
+
+static void
+handle_pinch_begin (MetaWaylandPointer *pointer,
+                    const ClutterEvent *event)
+{
+  MetaWaylandPointerClient *pointer_client;
+  struct wl_resource *resource;
+  uint32_t serial;
+
+  pointer_client = pointer->focus_client;
+  serial = wl_display_next_serial (pointer->display);
+
+  wl_resource_for_each (resource, &pointer_client->pinch_gesture_resources)
+    {
+      _wl_pointer_gesture_pinch_send_begin (resource, serial,
+                                            clutter_event_get_time (event),
+                                            pointer->focus_surface->resource,
+                                            2);
+    }
+}
+
+static void
+handle_pinch_update (MetaWaylandPointer *pointer,
+                     const ClutterEvent *event)
+{
+  MetaWaylandPointerClient *pointer_client;
+  struct wl_resource *resource;
+  gdouble dx, dy, scale, rotation;
+
+  pointer_client = pointer->focus_client;
+  clutter_event_get_gesture_motion_delta (event, &dx, &dy);
+  rotation = clutter_event_get_gesture_pinch_angle_delta (event);
+  scale = clutter_event_get_gesture_pinch_scale (event);
+
+  wl_resource_for_each (resource, &pointer_client->pinch_gesture_resources)
+    {
+      _wl_pointer_gesture_pinch_send_update (resource,
+                                             clutter_event_get_time (event),
+                                             wl_fixed_from_double (dx),
+                                             wl_fixed_from_double (dy),
+                                             wl_fixed_from_double (scale),
+                                             wl_fixed_from_double (rotation));
+    }
+}
+
+static void
+handle_pinch_end (MetaWaylandPointer *pointer,
+                  const ClutterEvent *event)
+{
+  MetaWaylandPointerClient *pointer_client;
+  struct wl_resource *resource;
+  gboolean cancelled = FALSE;
+  uint32_t serial;
+
+  pointer_client = pointer->focus_client;
+  serial = wl_display_next_serial (pointer->display);
+
+  if (event->touchpad_pinch.phase == CLUTTER_TOUCHPAD_GESTURE_PHASE_CANCEL)
+    cancelled = TRUE;
+
+  wl_resource_for_each (resource, &pointer_client->pinch_gesture_resources)
+    {
+      _wl_pointer_gesture_pinch_send_end (resource, serial,
+                                          clutter_event_get_time (event),
+                                          cancelled);
+    }
+}
+
+gboolean
+meta_wayland_pointer_gesture_pinch_handle_event (MetaWaylandPointer *pointer,
+                                                 const ClutterEvent *event)
+{
+  if (event->type != CLUTTER_TOUCHPAD_PINCH)
+    return FALSE;
+
+  if (!pointer->focus_client)
+    return FALSE;
+
+  switch (event->touchpad_pinch.phase)
+    {
+    case CLUTTER_TOUCHPAD_GESTURE_PHASE_BEGIN:
+      handle_pinch_begin (pointer, event);
+      break;
+    case CLUTTER_TOUCHPAD_GESTURE_PHASE_UPDATE:
+      handle_pinch_update (pointer, event);
+      break;
+    case CLUTTER_TOUCHPAD_GESTURE_PHASE_END:
+    case CLUTTER_TOUCHPAD_GESTURE_PHASE_CANCEL:
+      handle_pinch_end (pointer, event);
+      break;
+    default:
+      return FALSE;
+    }
+
+  return TRUE;
+}
+
+static void
+pointer_gesture_pinch_destroy (struct wl_client   *client,
+                               struct wl_resource *resource)
+{
+  wl_resource_destroy (resource);
+}
+
+static const struct _wl_pointer_gesture_pinch_interface pointer_gesture_pinch_interface = {
+  pointer_gesture_pinch_destroy
+};
+
+void
+meta_wayland_pointer_gesture_pinch_create_new_resource (MetaWaylandPointer *pointer,
+                                                        struct wl_client   *client,
+                                                        struct wl_resource *gestures_resource,
+                                                        uint32_t            id)
+{
+  MetaWaylandPointerClient *pointer_client;
+  struct wl_resource *res;
+
+  pointer_client = meta_wayland_pointer_get_pointer_client (pointer, client);
+  g_return_if_fail (pointer_client != NULL);
+
+  res = wl_resource_create (client, &_wl_pointer_gesture_pinch_interface,
+                            wl_resource_get_version (gestures_resource), id);
+  wl_resource_set_implementation (res, &pointer_gesture_pinch_interface, pointer,
+                                  meta_wayland_pointer_unbind_pointer_client_resource);
+  wl_list_insert (&pointer_client->pinch_gesture_resources,
+                  wl_resource_get_link (res));
+}

src/wayland/meta-wayland-pointer-gesture-pinch.h

@@ -0,0 +1,39 @@
+/*
+ * Wayland Support
+ *
+ * Copyright (C) 2015 Red Hat
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Carlos Garnacho <carlosg@gnome.org>
+ */
+
+#ifndef META_WAYLAND_POINTER_GESTURE_PINCH_H
+#define META_WAYLAND_POINTER_GESTURE_PINCH_H
+
+#include <wayland-server.h>
+#include <clutter/clutter.h>
+#include <glib.h>
+
+#include "meta-wayland-types.h"
+
+gboolean meta_wayland_pointer_gesture_pinch_handle_event (MetaWaylandPointer *pointer,
+                                                          const ClutterEvent *event);
+
+void meta_wayland_pointer_gesture_pinch_create_new_resource (MetaWaylandPointer *pointer,
+                                                             struct wl_client   *client,
+                                                             struct wl_resource *gestures_resource,
+                                                             uint32_t            id);
+
+#endif /* META_WAYLAND_POINTER_GESTURE_PINCH_H */

src/wayland/meta-wayland-pointer-gesture-swipe.c

@@ -0,0 +1,156 @@
+/*
+ * Wayland Support
+ *
+ * Copyright (C) 2015 Red Hat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Author: Carlos Garnacho <carlosg@gnome.org>
+ */
+
+#define _GNU_SOURCE
+
+#include "config.h"
+
+#include <glib.h>
+
+#include "meta-wayland-pointer-gesture-swipe.h"
+#include "meta-wayland-pointer.h"
+#include "meta-wayland-surface.h"
+#include "pointer-gestures-server-protocol.h"
+
+static void
+handle_swipe_begin (MetaWaylandPointer *pointer,
+                    const ClutterEvent *event)
+{
+  MetaWaylandPointerClient *pointer_client;
+  struct wl_resource *resource;
+  uint32_t serial, fingers;
+
+  pointer_client = pointer->focus_client;
+  serial = wl_display_next_serial (pointer->display);
+  fingers = clutter_event_get_gesture_swipe_finger_count (event);
+
+  wl_resource_for_each (resource, &pointer_client->swipe_gesture_resources)
+    {
+      _wl_pointer_gesture_swipe_send_begin (resource, serial,
+                                            clutter_event_get_time (event),
+                                            pointer->focus_surface->resource,
+                                            fingers);
+    }
+}
+
+static void
+handle_swipe_update (MetaWaylandPointer *pointer,
+                     const ClutterEvent *event)
+{
+  MetaWaylandPointerClient *pointer_client;
+  struct wl_resource *resource;
+  gdouble dx, dy;
+
+  pointer_client = pointer->focus_client;
+  clutter_event_get_gesture_motion_delta (event, &dx, &dy);
+
+  wl_resource_for_each (resource, &pointer_client->swipe_gesture_resources)
+    {
+      _wl_pointer_gesture_swipe_send_update (resource,
+                                             clutter_event_get_time (event),
+                                             wl_fixed_from_double (dx),
+                                             wl_fixed_from_double (dy));
+    }
+}
+
+static void
+handle_swipe_end (MetaWaylandPointer *pointer,
+                  const ClutterEvent *event)
+{
+  MetaWaylandPointerClient *pointer_client;
+  struct wl_resource *resource;
+  gboolean cancelled = FALSE;
+  uint32_t serial;
+
+  pointer_client = pointer->focus_client;
+  serial = wl_display_next_serial (pointer->display);
+
+  if (event->touchpad_swipe.phase == CLUTTER_TOUCHPAD_GESTURE_PHASE_CANCEL)
+    cancelled = TRUE;
+
+  wl_resource_for_each (resource, &pointer_client->swipe_gesture_resources)
+    {
+      _wl_pointer_gesture_swipe_send_end (resource, serial,
+                                          clutter_event_get_time (event),
+                                          cancelled);
+    }
+}
+
+gboolean
+meta_wayland_pointer_gesture_swipe_handle_event (MetaWaylandPointer *pointer,
+                                                 const ClutterEvent *event)
+{
+  if (event->type != CLUTTER_TOUCHPAD_SWIPE)
+    return FALSE;
+
+  if (!pointer->focus_client)
+    return FALSE;
+
+  switch (event->touchpad_swipe.phase)
+    {
+    case CLUTTER_TOUCHPAD_GESTURE_PHASE_BEGIN:
+      handle_swipe_begin (pointer, event);
+      break;
+    case CLUTTER_TOUCHPAD_GESTURE_PHASE_UPDATE:
+      handle_swipe_update (pointer, event);
+      break;
+    case CLUTTER_TOUCHPAD_GESTURE_PHASE_END:
+      handle_swipe_end (pointer, event);
+      break;
+    default:
+      return FALSE;
+    }
+
+  return TRUE;
+}
+
+static void
+pointer_gesture_swipe_release (struct wl_client   *client,
+                               struct wl_resource *resource)
+{
+  wl_resource_destroy (resource);
+}
+
+static const struct _wl_pointer_gesture_swipe_interface pointer_gesture_swipe_interface = {
+  pointer_gesture_swipe_release
+};
+
+void
+meta_wayland_pointer_gesture_swipe_create_new_resource (MetaWaylandPointer *pointer,
+                                                        struct wl_client   *client,
+                                                        struct wl_resource *pointer_resource,
+                                                        uint32_t            id)
+{
+  MetaWaylandPointerClient *pointer_client;
+  struct wl_resource *res;
+
+  pointer_client = meta_wayland_pointer_get_pointer_client (pointer, client);
+  g_return_if_fail (pointer_client != NULL);
+
+  res = wl_resource_create (client, &_wl_pointer_gesture_swipe_interface,
+                            wl_resource_get_version (pointer_resource), id);
+  wl_resource_set_implementation (res, &pointer_gesture_swipe_interface, pointer,
+                                  meta_wayland_pointer_unbind_pointer_client_resource);
+  wl_list_insert (&pointer_client->swipe_gesture_resources,
+                  wl_resource_get_link (res));
+}

src/wayland/meta-wayland-pointer-gesture-swipe.h

@@ -0,0 +1,39 @@
+/*
+ * Wayland Support
+ *
+ * Copyright (C) 2015 Red Hat
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Carlos Garnacho <carlosg@gnome.org>
+ */
+
+#ifndef META_WAYLAND_POINTER_GESTURE_SWIPE_H
+#define META_WAYLAND_POINTER_GESTURE_SWIPE_H
+
+#include <wayland-server.h>
+#include <clutter/clutter.h>
+#include <glib.h>
+
+#include "meta-wayland-types.h"
+
+gboolean meta_wayland_pointer_gesture_swipe_handle_event (MetaWaylandPointer *pointer,
+                                                          const ClutterEvent *event);
+
+void meta_wayland_pointer_gesture_swipe_create_new_resource (MetaWaylandPointer *pointer,
+                                                             struct wl_client   *client,
+                                                             struct wl_resource *pointer_resource,
+                                                             uint32_t            id);
+
+#endif /* META_WAYLAND_POINTER_GESTURE_SWIPE_H */

src/wayland/meta-wayland-pointer-gestures.c

@@ -0,0 +1,90 @@
+/*
+ * Wayland Support
+ *
+ * Copyright (C) 2015 Red Hat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Author: Carlos Garnacho <carlosg@gnome.org>
+ */
+
+#define _GNU_SOURCE
+
+#include "config.h"
+
+#include <glib.h>
+#include "meta-wayland-pointer-gestures.h"
+#include "pointer-gestures-server-protocol.h"
+#include "meta-wayland-versions.h"
+#include "meta-wayland-private.h"
+
+static void
+gestures_get_swipe (struct wl_client   *client,
+                    struct wl_resource *resource,
+                    uint32_t            id,
+                    struct wl_resource *pointer_resource)
+{
+  MetaWaylandPointer *pointer = wl_resource_get_user_data (pointer_resource);
+
+  meta_wayland_pointer_gesture_swipe_create_new_resource (pointer, client, resource, id);
+}
+
+static void
+gestures_get_pinch (struct wl_client   *client,
+                    struct wl_resource *resource,
+                    uint32_t            id,
+                    struct wl_resource *pointer_resource)
+{
+  MetaWaylandPointer *pointer = wl_resource_get_user_data (pointer_resource);
+
+  meta_wayland_pointer_gesture_pinch_create_new_resource (pointer, client, resource, id);
+}
+
+static const struct _wl_pointer_gestures_interface pointer_gestures_interface = {
+  gestures_get_swipe,
+  gestures_get_pinch
+};
+
+static void
+bind_pointer_gestures (struct wl_client *client,
+                       void             *data,
+                       guint32           version,
+                       guint32           id)
+{
+  struct wl_resource *resource;
+
+  resource = wl_resource_create (client, &_wl_pointer_gestures_interface, version, id);
+
+  if (version != META__WL_POINTER_GESTURES_VERSION)
+    {
+      wl_resource_post_error (resource,
+                              _WL_POINTER_GESTURES_ERROR_VERSION_MISMATCH,
+                              "The client bound a non-supported version");
+      return;
+    }
+
+  wl_resource_set_implementation (resource, &pointer_gestures_interface,
+                                  NULL, NULL);
+}
+
+void
+meta_wayland_pointer_gestures_init (MetaWaylandCompositor *compositor)
+{
+  wl_global_create (compositor->wayland_display,
+                    &_wl_pointer_gestures_interface,
+                    META__WL_POINTER_GESTURES_VERSION,
+                    NULL, bind_pointer_gestures);
+}

src/wayland/meta-wayland-pointer-gestures.h

@@ -0,0 +1,32 @@
+/*
+ * Wayland Support
+ *
+ * Copyright (C) 2015 Red Hat
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Carlos Garnacho <carlosg@gnome.org>
+ */
+
+#ifndef META_WAYLAND_POINTER_GESTURES_H
+#define META_WAYLAND_POINTER_GESTURES_H
+
+#include <wayland-server.h>
+#include <glib.h>
+
+#include "meta-wayland-types.h"
+
+void meta_wayland_pointer_gestures_init (MetaWaylandCompositor *compositor);
+
+#endif /* META_WAYLAND_POINTER_GESTURES_H */

src/wayland/meta-wayland-pointer.c

@@ -44,24 +44,161 @@
 #include "config.h"
 
 #include <clutter/clutter.h>
+#include <cogl/cogl.h>
+#include <cogl/cogl-wayland-server.h>
 #include <linux/input.h>
 
 #include "meta-wayland-pointer.h"
 #include "meta-wayland-popup.h"
 #include "meta-wayland-private.h"
+#include "meta-wayland-surface.h"
 #include "meta-wayland-buffer.h"
 #include "meta-cursor.h"
 #include "meta-cursor-tracker-private.h"
 #include "meta-surface-actor-wayland.h"
+#include "meta/meta-cursor-tracker.h"
+#include "backends/meta-backend-private.h"
+#include "backends/meta-cursor-tracker-private.h"
+#include "backends/meta-cursor-renderer.h"
 
 #include <string.h>
 
 #define DEFAULT_AXIS_STEP_DISTANCE wl_fixed_from_int (10)
 
-static void
-unbind_resource (struct wl_resource *resource)
+struct _MetaWaylandSurfaceRoleCursor
 {
+  MetaWaylandSurfaceRole parent;
+
+  int hot_x;
+  int hot_y;
+  MetaCursorSprite *cursor_sprite;
+};
+
+GType meta_wayland_surface_role_cursor_get_type (void) G_GNUC_CONST;
+G_DEFINE_TYPE (MetaWaylandSurfaceRoleCursor,
+               meta_wayland_surface_role_cursor,
+               META_TYPE_WAYLAND_SURFACE_ROLE);
+
+static void
+meta_wayland_pointer_update_cursor_surface (MetaWaylandPointer *pointer);
+
+static MetaWaylandPointerClient *
+meta_wayland_pointer_client_new (void)
+{
+  MetaWaylandPointerClient *pointer_client;
+
+  pointer_client = g_slice_new0 (MetaWaylandPointerClient);
+  wl_list_init (&pointer_client->pointer_resources);
+  wl_list_init (&pointer_client->swipe_gesture_resources);
+  wl_list_init (&pointer_client->pinch_gesture_resources);
+
+  return pointer_client;
+}
+
+static void
+meta_wayland_pointer_client_free (MetaWaylandPointerClient *pointer_client)
+{
+  struct wl_resource *resource, *next;
+
+  /* Since we make every wl_pointer resource defunct when we stop advertising
+   * the pointer capability on the wl_seat, we need to make sure all the
+   * resources in the pointer client instance gets removed.
+   */
+  wl_resource_for_each_safe (resource, next, &pointer_client->pointer_resources)
+    {
+      wl_list_remove (wl_resource_get_link (resource));
+      wl_list_init (wl_resource_get_link (resource));
+    }
+  wl_resource_for_each_safe (resource, next, &pointer_client->swipe_gesture_resources)
+    {
+      wl_list_remove (wl_resource_get_link (resource));
+      wl_list_init (wl_resource_get_link (resource));
+    }
+  wl_resource_for_each_safe (resource, next, &pointer_client->pinch_gesture_resources)
+    {
+      wl_list_remove (wl_resource_get_link (resource));
+      wl_list_init (wl_resource_get_link (resource));
+    }
+
+  g_slice_free (MetaWaylandPointerClient, pointer_client);
+}
+
+static gboolean
+meta_wayland_pointer_client_is_empty (MetaWaylandPointerClient *pointer_client)
+{
+  return (wl_list_empty (&pointer_client->pointer_resources) &&
+          wl_list_empty (&pointer_client->swipe_gesture_resources) &&
+          wl_list_empty (&pointer_client->pinch_gesture_resources));
+}
+
+MetaWaylandPointerClient *
+meta_wayland_pointer_get_pointer_client (MetaWaylandPointer *pointer,
+                                         struct wl_client   *client)
+{
+  if (!pointer->pointer_clients)
+    return NULL;
+  return g_hash_table_lookup (pointer->pointer_clients, client);
+}
+
+static MetaWaylandPointerClient *
+meta_wayland_pointer_ensure_pointer_client (MetaWaylandPointer *pointer,
+                                            struct wl_client   *client)
+{
+  MetaWaylandPointerClient *pointer_client;
+
+  pointer_client = meta_wayland_pointer_get_pointer_client (pointer, client);
+  if (pointer_client)
+    return pointer_client;
+
+  pointer_client = meta_wayland_pointer_client_new ();
+  g_hash_table_insert (pointer->pointer_clients, client, pointer_client);
+
+  if (!pointer->focus_client &&
+      pointer->focus_surface &&
+      wl_resource_get_client (pointer->focus_surface->resource) == client)
+    pointer->focus_client = pointer_client;
+
+  return pointer_client;
+}
+
+static void
+meta_wayland_pointer_cleanup_pointer_client (MetaWaylandPointer       *pointer,
+                                             MetaWaylandPointerClient *pointer_client,
+                                             struct wl_client         *client)
+{
+  if (meta_wayland_pointer_client_is_empty (pointer_client))
+    {
+      if (pointer->focus_client == pointer_client)
+        pointer->focus_client = NULL;
+      g_hash_table_remove (pointer->pointer_clients, client);
+    }
+}
+
+void
+meta_wayland_pointer_unbind_pointer_client_resource (struct wl_resource *resource)
+{
+  MetaWaylandPointer *pointer = wl_resource_get_user_data (resource);
+  MetaWaylandPointerClient *pointer_client;
+  struct wl_client *client = wl_resource_get_client (resource);
+
   wl_list_remove (wl_resource_get_link (resource));
+
+  pointer_client = meta_wayland_pointer_get_pointer_client (pointer, client);
+  if (!pointer_client)
+    {
+      /* This happens if all pointer devices were unplugged and no new resources
+       * were created by the client.
+       *
+       * If this is a resource that was previously made defunct, pointer_client
+       * be non-NULL but it is harmless since the below cleanup call will be
+       * prevented from removing the pointer client because of valid resources.
+       */
+      return;
+    }
+
+  meta_wayland_pointer_cleanup_pointer_client (pointer,
+                                               pointer_client,
+                                               client);
 }
 
 static void
@@ -92,32 +229,6 @@ sync_focus_surface (MetaWaylandPointer *pointer)
 
 }
 
-static void
-set_cursor_surface (MetaWaylandPointer *pointer,
-                    MetaWaylandSurface *surface)
-{
-  if (pointer->cursor_surface == surface)
-    return;
-
-  if (pointer->cursor_surface)
-    wl_list_remove (&pointer->cursor_surface_destroy_listener.link);
-
-  pointer->cursor_surface = surface;
-
-  if (pointer->cursor_surface)
-    wl_resource_add_destroy_listener (pointer->cursor_surface->resource,
-                                      &pointer->cursor_surface_destroy_listener);
-}
-
-static void
-pointer_handle_cursor_surface_destroy (struct wl_listener *listener, void *data)
-{
-  MetaWaylandPointer *pointer = wl_container_of (listener, pointer, cursor_surface_destroy_listener);
-
-  set_cursor_surface (pointer, NULL);
-  meta_wayland_pointer_update_cursor_surface (pointer);
-}
-
 static void
 pointer_handle_focus_surface_destroy (struct wl_listener *listener, void *data)
 {
@@ -131,17 +242,20 @@ meta_wayland_pointer_send_motion (MetaWaylandPointer *pointer,
                                   const ClutterEvent *event)
 {
   struct wl_resource *resource;
-  struct wl_list *l;
+  uint32_t time;
+  wl_fixed_t sx, sy;
 
-  l = &pointer->focus_resource_list;
-  wl_resource_for_each(resource, l)
+  if (!pointer->focus_client)
+    return;
+
+  time = clutter_event_get_time (event);
+  meta_wayland_pointer_get_relative_coordinates (pointer,
+                                                 pointer->focus_surface,
+                                                 &sx, &sy);
+
+  wl_resource_for_each (resource, &pointer->focus_client->pointer_resources)
     {
-      wl_fixed_t sx, sy;
-
-      meta_wayland_pointer_get_relative_coordinates (pointer,
-                                                     pointer->focus_surface,
-                                                     &sx, &sy);
-      wl_pointer_send_motion (resource, clutter_event_get_time (event), sx, sy);
+      wl_pointer_send_motion (resource, time, sx, sy);
     }
 }
 
@@ -150,19 +264,21 @@ meta_wayland_pointer_send_button (MetaWaylandPointer *pointer,
                                   const ClutterEvent *event)
 {
   struct wl_resource *resource;
-  struct wl_list *l;
   ClutterEventType event_type;
 
   event_type = clutter_event_type (event);
 
-  l = &pointer->focus_resource_list;
-  if (!wl_list_empty (l))
+  if (pointer->focus_client &&
+      !wl_list_empty (&pointer->focus_client->pointer_resources))
     {
       struct wl_client *client = wl_resource_get_client (pointer->focus_surface->resource);
       struct wl_display *display = wl_client_get_display (client);
+      uint32_t time;
       uint32_t button;
       uint32_t serial;
 
+      time = clutter_event_get_time (event);
+
       button = clutter_event_get_button (event);
       switch (button)
 	{
@@ -183,10 +299,10 @@ meta_wayland_pointer_send_button (MetaWaylandPointer *pointer,
 
       serial = wl_display_next_serial (display);
 
-      wl_resource_for_each(resource, l)
+      wl_resource_for_each (resource, &pointer->focus_client->pointer_resources)
         {
           wl_pointer_send_button (resource, serial,
-                                  clutter_event_get_time (event), button,
+                                  time, button,
                                   event_type == CLUTTER_BUTTON_PRESS ? 1 : 0);
         }
     }
@@ -231,23 +347,32 @@ static const MetaWaylandPointerGrabInterface default_pointer_grab_interface = {
   default_grab_button
 };
 
+static void
+meta_wayland_pointer_on_cursor_changed (MetaCursorTracker *cursor_tracker,
+                                        MetaWaylandPointer *pointer)
+{
+  if (pointer->cursor_surface)
+    meta_wayland_surface_update_outputs (pointer->cursor_surface);
+}
+
 void
 meta_wayland_pointer_init (MetaWaylandPointer *pointer,
                            struct wl_display  *display)
 {
+  MetaCursorTracker *cursor_tracker = meta_cursor_tracker_get_for_screen (NULL);
   ClutterDeviceManager *manager;
 
   memset (pointer, 0, sizeof *pointer);
 
   pointer->display = display;
 
-  wl_list_init (&pointer->resource_list);
-  wl_list_init (&pointer->focus_resource_list);
+  pointer->pointer_clients =
+    g_hash_table_new_full (NULL, NULL, NULL,
+                           (GDestroyNotify) meta_wayland_pointer_client_free);
 
   pointer->focus_surface_listener.notify = pointer_handle_focus_surface_destroy;
 
   pointer->cursor_surface = NULL;
-  pointer->cursor_surface_destroy_listener.notify = pointer_handle_cursor_surface_destroy;
 
   pointer->default_grab.interface = &default_pointer_grab_interface;
   pointer->default_grab.pointer = pointer;
@@ -256,16 +381,26 @@ meta_wayland_pointer_init (MetaWaylandPointer *pointer,
   manager = clutter_device_manager_get_default ();
   pointer->device = clutter_device_manager_get_core_device (manager, CLUTTER_POINTER_DEVICE);
 
-  pointer->cursor_tracker = meta_cursor_tracker_get_for_screen (NULL);
+  g_signal_connect (cursor_tracker,
+                    "cursor-changed",
+                    G_CALLBACK (meta_wayland_pointer_on_cursor_changed),
+                    pointer);
 }
 
 void
 meta_wayland_pointer_release (MetaWaylandPointer *pointer)
 {
-  meta_wayland_pointer_set_focus (pointer, NULL);
-  set_cursor_surface (pointer, NULL);
+  MetaCursorTracker *cursor_tracker = meta_cursor_tracker_get_for_screen (NULL);
 
+  g_signal_handlers_disconnect_by_func (cursor_tracker,
+                                        (gpointer) meta_wayland_pointer_on_cursor_changed,
+                                        pointer);
+
+  meta_wayland_pointer_set_focus (pointer, NULL);
+
+  g_clear_pointer (&pointer->pointer_clients, g_hash_table_unref);
   pointer->display = NULL;
+  pointer->cursor_surface = NULL;
 }
 
 static int
@@ -358,7 +493,6 @@ handle_scroll_event (MetaWaylandPointer *pointer,
                      const ClutterEvent *event)
 {
   struct wl_resource *resource;
-  struct wl_list *l;
   wl_fixed_t x_value = 0, y_value = 0;
 
   if (clutter_event_is_pointer_emulated (event))
@@ -399,15 +533,17 @@ handle_scroll_event (MetaWaylandPointer *pointer,
       return;
     }
 
-  l = &pointer->focus_resource_list;
-  wl_resource_for_each (resource, l)
+  if (pointer->focus_client)
     {
-      if (x_value)
-        wl_pointer_send_axis (resource, clutter_event_get_time (event),
-                              WL_POINTER_AXIS_HORIZONTAL_SCROLL, x_value);
-      if (y_value)
-        wl_pointer_send_axis (resource, clutter_event_get_time (event),
-                              WL_POINTER_AXIS_VERTICAL_SCROLL, y_value);
+      wl_resource_for_each (resource, &pointer->focus_client->pointer_resources)
+        {
+          if (x_value)
+            wl_pointer_send_axis (resource, clutter_event_get_time (event),
+                                  WL_POINTER_AXIS_HORIZONTAL_SCROLL, x_value);
+          if (y_value)
+            wl_pointer_send_axis (resource, clutter_event_get_time (event),
+                                  WL_POINTER_AXIS_VERTICAL_SCROLL, y_value);
+        }
     }
 }
 
@@ -430,6 +566,14 @@ meta_wayland_pointer_handle_event (MetaWaylandPointer *pointer,
       handle_scroll_event (pointer, event);
       break;
 
+    case CLUTTER_TOUCHPAD_SWIPE:
+      meta_wayland_pointer_gesture_swipe_handle_event (pointer, event);
+      break;
+
+    case CLUTTER_TOUCHPAD_PINCH:
+      meta_wayland_pointer_gesture_pinch_handle_event (pointer, event);
+      break;
+
     default:
       break;
     }
@@ -437,29 +581,6 @@ meta_wayland_pointer_handle_event (MetaWaylandPointer *pointer,
   return FALSE;
 }
 
-static void
-move_resources (struct wl_list *destination, struct wl_list *source)
-{
-  wl_list_insert_list (destination, source);
-  wl_list_init (source);
-}
-
-static void
-move_resources_for_client (struct wl_list *destination,
-			   struct wl_list *source,
-			   struct wl_client *client)
-{
-  struct wl_resource *resource, *tmp;
-  wl_resource_for_each_safe (resource, tmp, source)
-    {
-      if (wl_resource_get_client (resource) == client)
-        {
-          wl_list_remove (wl_resource_get_link (resource));
-          wl_list_insert (destination, wl_resource_get_link (resource));
-        }
-    }
-}
-
 static void
 broadcast_focus (MetaWaylandPointer *pointer,
                  struct wl_resource *resource)
@@ -482,22 +603,23 @@ meta_wayland_pointer_set_focus (MetaWaylandPointer *pointer,
 
   if (pointer->focus_surface != NULL)
     {
+      struct wl_client *client =
+        wl_resource_get_client (pointer->focus_surface->resource);
+      struct wl_display *display = wl_client_get_display (client);
+      uint32_t serial;
       struct wl_resource *resource;
-      struct wl_list *l;
 
-      l = &pointer->focus_resource_list;
-      if (!wl_list_empty (l))
+      serial = wl_display_next_serial (display);
+
+      if (pointer->focus_client)
         {
-          struct wl_client *client = wl_resource_get_client (pointer->focus_surface->resource);
-          struct wl_display *display = wl_client_get_display (client);
-          uint32_t serial = wl_display_next_serial (display);
-
-          wl_resource_for_each (resource, l)
+          wl_resource_for_each (resource,
+                                &pointer->focus_client->pointer_resources)
             {
               wl_pointer_send_leave (resource, serial, pointer->focus_surface->resource);
             }
 
-          move_resources (&pointer->resource_list, &pointer->focus_resource_list);
+          pointer->focus_client = NULL;
         }
 
       wl_list_remove (&pointer->focus_surface_listener.link);
@@ -506,8 +628,9 @@ meta_wayland_pointer_set_focus (MetaWaylandPointer *pointer,
 
   if (surface != NULL)
     {
+      struct wl_client *client = wl_resource_get_client (surface->resource);
+      struct wl_display *display = wl_client_get_display (client);
       struct wl_resource *resource;
-      struct wl_list *l;
       ClutterPoint pos;
 
       pointer->focus_surface = surface;
@@ -521,18 +644,14 @@ meta_wayland_pointer_set_focus (MetaWaylandPointer *pointer,
                                   clutter_get_current_event_time (),
                                   pos.x, pos.y);
 
-      move_resources_for_client (&pointer->focus_resource_list,
-                                 &pointer->resource_list,
-                                 wl_resource_get_client (pointer->focus_surface->resource));
-
-      l = &pointer->focus_resource_list;
-      if (!wl_list_empty (l))
+      pointer->focus_client =
+        meta_wayland_pointer_get_pointer_client (pointer, client);
+      if (pointer->focus_client)
         {
-          struct wl_client *client = wl_resource_get_client (pointer->focus_surface->resource);
-          struct wl_display *display = wl_client_get_display (client);
           pointer->focus_serial = wl_display_next_serial (display);
 
-          wl_resource_for_each (resource, l)
+          wl_resource_for_each (resource,
+                                &pointer->focus_client->pointer_resources)
             {
               broadcast_focus (pointer, resource);
             }
@@ -623,34 +742,104 @@ meta_wayland_pointer_get_relative_coordinates (MetaWaylandPointer *pointer,
   *sy = wl_fixed_from_double (yf) / surface->scale;
 }
 
-void
+static void
 meta_wayland_pointer_update_cursor_surface (MetaWaylandPointer *pointer)
 {
-  if (pointer->cursor_tracker == NULL)
-    return;
+  MetaCursorTracker *cursor_tracker = meta_cursor_tracker_get_for_screen (NULL);
 
   if (pointer->current)
     {
-      MetaCursorReference *cursor;
+      MetaCursorSprite *cursor_sprite = NULL;
 
-      if (pointer->cursor_surface && pointer->cursor_surface->buffer)
+      if (pointer->cursor_surface)
         {
-          struct wl_resource *buffer = pointer->cursor_surface->buffer->resource;
-          cursor = meta_cursor_reference_from_buffer (buffer,
-                                                      pointer->hotspot_x,
-                                                      pointer->hotspot_y);
+          MetaWaylandSurfaceRoleCursor *cursor_role =
+            META_WAYLAND_SURFACE_ROLE_CURSOR (pointer->cursor_surface->role);
+
+          cursor_sprite = cursor_role->cursor_sprite;
         }
-      else
-        cursor = NULL;
 
-      meta_cursor_tracker_set_window_cursor (pointer->cursor_tracker, cursor);
-
-      if (cursor)
-        meta_cursor_reference_unref (cursor);
+      meta_cursor_tracker_set_window_cursor (cursor_tracker, cursor_sprite);
     }
   else
     {
-      meta_cursor_tracker_unset_window_cursor (pointer->cursor_tracker);
+      meta_cursor_tracker_unset_window_cursor (cursor_tracker);
+    }
+}
+
+static void
+update_cursor_sprite_texture (MetaWaylandSurface *surface)
+{
+  MetaCursorRenderer *cursor_renderer =
+    meta_backend_get_cursor_renderer (meta_get_backend ());
+  MetaCursorTracker *cursor_tracker = meta_cursor_tracker_get_for_screen (NULL);
+  MetaWaylandSurfaceRoleCursor *cursor_role =
+    META_WAYLAND_SURFACE_ROLE_CURSOR (surface->role);
+  MetaCursorSprite *cursor_sprite = cursor_role->cursor_sprite;
+  ClutterBackend *clutter_backend = clutter_get_default_backend ();
+  CoglContext *cogl_context =
+    clutter_backend_get_cogl_context (clutter_backend);
+  CoglTexture *texture;
+
+  if (surface->buffer)
+    {
+      struct wl_resource *buffer;
+
+      buffer = surface->buffer->resource;
+      texture = cogl_wayland_texture_2d_new_from_buffer (cogl_context,
+                                                         buffer,
+                                                         NULL);
+
+      meta_cursor_sprite_set_texture (cursor_sprite,
+                                      texture,
+                                      cursor_role->hot_x * surface->scale,
+                                      cursor_role->hot_y * surface->scale);
+      meta_cursor_renderer_realize_cursor_from_wl_buffer (cursor_renderer,
+                                                          cursor_sprite,
+                                                          buffer);
+      cogl_object_unref (texture);
+    }
+  else
+    {
+      meta_cursor_sprite_set_texture (cursor_sprite, NULL, 0, 0);
+    }
+
+  if (cursor_sprite == meta_cursor_tracker_get_displayed_cursor (cursor_tracker))
+    meta_cursor_renderer_force_update (cursor_renderer);
+}
+
+static void
+cursor_sprite_prepare_at (MetaCursorSprite *cursor_sprite,
+                          int x,
+                          int y,
+                          MetaWaylandSurfaceRoleCursor *cursor_role)
+{
+  MetaWaylandSurfaceRole *role = META_WAYLAND_SURFACE_ROLE (cursor_role);
+  MetaWaylandSurface *surface = meta_wayland_surface_role_get_surface (role);
+  MetaDisplay *display = meta_get_display ();
+  MetaScreen *screen = display->screen;
+  const MetaMonitorInfo *monitor;
+
+  monitor = meta_screen_get_monitor_for_point (screen, x, y);
+  meta_cursor_sprite_set_texture_scale (cursor_sprite,
+                                        (float)monitor->scale / surface->scale);
+  meta_wayland_surface_update_outputs (surface);
+}
+
+static void
+meta_wayland_pointer_set_cursor_surface (MetaWaylandPointer *pointer,
+                                         MetaWaylandSurface *cursor_surface)
+{
+  MetaWaylandSurface *prev_cursor_surface;
+
+  prev_cursor_surface = pointer->cursor_surface;
+  pointer->cursor_surface = cursor_surface;
+
+  if (prev_cursor_surface != cursor_surface)
+    {
+      if (prev_cursor_surface)
+        meta_wayland_surface_update_outputs (prev_cursor_surface);
+      meta_wayland_pointer_update_cursor_surface (pointer);
     }
 }
 
@@ -659,7 +848,7 @@ pointer_set_cursor (struct wl_client *client,
                     struct wl_resource *resource,
                     uint32_t serial,
                     struct wl_resource *surface_resource,
-                    int32_t x, int32_t y)
+                    int32_t hot_x, int32_t hot_y)
 {
   MetaWaylandPointer *pointer = wl_resource_get_user_data (resource);
   MetaWaylandSurface *surface;
@@ -673,19 +862,38 @@ pointer_set_cursor (struct wl_client *client,
   if (pointer->focus_serial - serial > G_MAXUINT32 / 2)
     return;
 
-  if (surface)
+  if (surface &&
+      !meta_wayland_surface_assign_role (surface,
+                                         META_TYPE_WAYLAND_SURFACE_ROLE_CURSOR))
     {
-      if (meta_wayland_surface_set_role (surface,
-                                         META_WAYLAND_SURFACE_ROLE_CURSOR,
-                                         resource,
-                                         WL_POINTER_ERROR_ROLE) != 0)
-        return;
+      wl_resource_post_error (resource, WL_POINTER_ERROR_ROLE,
+                              "wl_surface@%d already has a different role",
+                              wl_resource_get_id (surface_resource));
+      return;
     }
 
-  pointer->hotspot_x = x;
-  pointer->hotspot_y = y;
-  set_cursor_surface (pointer, surface);
-  meta_wayland_pointer_update_cursor_surface (pointer);
+  if (surface)
+    {
+      MetaWaylandSurfaceRoleCursor *cursor_role;
+
+      cursor_role = META_WAYLAND_SURFACE_ROLE_CURSOR (surface->role);
+      if (!cursor_role->cursor_sprite)
+        {
+          cursor_role->cursor_sprite = meta_cursor_sprite_new ();
+          g_signal_connect_object (cursor_role->cursor_sprite,
+                                   "prepare-at",
+                                   G_CALLBACK (cursor_sprite_prepare_at),
+                                   cursor_role,
+                                   0);
+        }
+
+      cursor_role->hot_x = hot_x;
+      cursor_role->hot_y = hot_y;
+
+      update_cursor_sprite_texture (surface);
+    }
+
+  meta_wayland_pointer_set_cursor_surface (pointer, surface);
 }
 
 static void
@@ -707,19 +915,19 @@ meta_wayland_pointer_create_new_resource (MetaWaylandPointer *pointer,
                                           uint32_t id)
 {
   struct wl_resource *cr;
+  MetaWaylandPointerClient *pointer_client;
 
   cr = wl_resource_create (client, &wl_pointer_interface, wl_resource_get_version (seat_resource), id);
-  wl_resource_set_implementation (cr, &pointer_interface, pointer, unbind_resource);
+  wl_resource_set_implementation (cr, &pointer_interface, pointer,
+                                  meta_wayland_pointer_unbind_pointer_client_resource);
 
-  if (pointer->focus_surface && wl_resource_get_client (pointer->focus_surface->resource) == client)
-    {
-      wl_list_insert (&pointer->focus_resource_list, wl_resource_get_link (cr));
-      broadcast_focus (pointer, cr);
-    }
-  else
-    {
-      wl_list_insert (&pointer->resource_list, wl_resource_get_link (cr));
-    }
+  pointer_client = meta_wayland_pointer_ensure_pointer_client (pointer, client);
+
+  wl_list_insert (&pointer_client->pointer_resources,
+                  wl_resource_get_link (cr));
+
+  if (pointer->focus_client == pointer_client)
+    broadcast_focus (pointer, cr);
 }
 
 gboolean
@@ -749,3 +957,99 @@ meta_wayland_pointer_get_top_popup (MetaWaylandPointer *pointer)
   grab = (MetaWaylandPopupGrab*)pointer->grab;
   return meta_wayland_popup_grab_get_top_popup(grab);
 }
+
+static void
+cursor_surface_role_assigned (MetaWaylandSurfaceRole *surface_role)
+{
+  MetaWaylandSurface *surface =
+    meta_wayland_surface_role_get_surface (surface_role);
+
+  meta_wayland_surface_queue_pending_frame_callbacks (surface);
+}
+
+static void
+cursor_surface_role_commit (MetaWaylandSurfaceRole  *surface_role,
+                            MetaWaylandPendingState *pending)
+{
+  MetaWaylandSurface *surface =
+    meta_wayland_surface_role_get_surface (surface_role);
+
+  meta_wayland_surface_queue_pending_state_frame_callbacks (surface, pending);
+
+  if (pending->newly_attached)
+    update_cursor_sprite_texture (surface);
+}
+
+static gboolean
+cursor_surface_role_is_on_output (MetaWaylandSurfaceRole *role,
+                                  MetaMonitorInfo        *monitor)
+{
+  MetaWaylandSurface *surface =
+    meta_wayland_surface_role_get_surface (role);
+  MetaWaylandPointer *pointer = &surface->compositor->seat->pointer;
+  MetaCursorTracker *cursor_tracker = meta_cursor_tracker_get_for_screen (NULL);
+  MetaCursorRenderer *cursor_renderer =
+    meta_backend_get_cursor_renderer (meta_get_backend ());
+  MetaWaylandSurfaceRoleCursor *cursor_role =
+    META_WAYLAND_SURFACE_ROLE_CURSOR (surface->role);
+  MetaCursorSprite *displayed_cursor_sprite;
+  MetaRectangle rect;
+
+  if (surface != pointer->cursor_surface)
+    return FALSE;
+
+  displayed_cursor_sprite =
+    meta_cursor_tracker_get_displayed_cursor (cursor_tracker);
+  if (!displayed_cursor_sprite)
+    return FALSE;
+
+  if (cursor_role->cursor_sprite != displayed_cursor_sprite)
+    return FALSE;
+
+  rect = meta_cursor_renderer_calculate_rect (cursor_renderer,
+                                              cursor_role->cursor_sprite);
+  return meta_rectangle_overlap (&rect, &monitor->rect);
+}
+
+static void
+cursor_surface_role_dispose (GObject *object)
+{
+  MetaWaylandSurfaceRoleCursor *cursor_role =
+    META_WAYLAND_SURFACE_ROLE_CURSOR (object);
+  MetaWaylandSurface *surface =
+    meta_wayland_surface_role_get_surface (META_WAYLAND_SURFACE_ROLE (object));
+  MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
+  MetaWaylandPointer *pointer = &compositor->seat->pointer;
+  MetaCursorTracker *cursor_tracker = meta_cursor_tracker_get_for_screen (NULL);
+
+  g_signal_handlers_disconnect_by_func (cursor_tracker,
+                                        (gpointer) cursor_sprite_prepare_at,
+                                        cursor_role);
+
+  if (pointer->cursor_surface == surface)
+    pointer->cursor_surface = NULL;
+  meta_wayland_pointer_update_cursor_surface (pointer);
+
+  g_clear_object (&cursor_role->cursor_sprite);
+
+  G_OBJECT_CLASS (meta_wayland_surface_role_cursor_parent_class)->dispose (object);
+}
+
+static void
+meta_wayland_surface_role_cursor_init (MetaWaylandSurfaceRoleCursor *role)
+{
+}
+
+static void
+meta_wayland_surface_role_cursor_class_init (MetaWaylandSurfaceRoleCursorClass *klass)
+{
+  MetaWaylandSurfaceRoleClass *surface_role_class =
+    META_WAYLAND_SURFACE_ROLE_CLASS (klass);
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  surface_role_class->assigned = cursor_surface_role_assigned;
+  surface_role_class->commit = cursor_surface_role_commit;
+  surface_role_class->is_on_output = cursor_surface_role_is_on_output;
+
+  object_class->dispose = cursor_surface_role_dispose;
+}

src/wayland/meta-wayland-pointer.h

@@ -25,9 +25,18 @@
 #include <glib.h>
 
 #include "meta-wayland-types.h"
+#include "meta-wayland-pointer-gesture-swipe.h"
+#include "meta-wayland-pointer-gesture-pinch.h"
+#include "meta-wayland-surface.h"
 
 #include <meta/meta-cursor-tracker.h>
 
+#define META_TYPE_WAYLAND_SURFACE_ROLE_CURSOR (meta_wayland_surface_role_cursor_get_type ())
+G_DECLARE_FINAL_TYPE (MetaWaylandSurfaceRoleCursor,
+                      meta_wayland_surface_role_cursor,
+                      META, WAYLAND_SURFACE_ROLE_CURSOR,
+                      MetaWaylandSurfaceRole);
+
 struct _MetaWaylandPointerGrabInterface
 {
   void (*focus) (MetaWaylandPointerGrab *grab,
@@ -44,22 +53,26 @@ struct _MetaWaylandPointerGrab
   MetaWaylandPointer *pointer;
 };
 
+struct _MetaWaylandPointerClient
+{
+  struct wl_list pointer_resources;
+  struct wl_list swipe_gesture_resources;
+  struct wl_list pinch_gesture_resources;
+};
+
 struct _MetaWaylandPointer
 {
   struct wl_display *display;
 
-  struct wl_list resource_list;
-  struct wl_list focus_resource_list;
+  MetaWaylandPointerClient *focus_client;
+  GHashTable *pointer_clients;
 
   MetaWaylandSurface *focus_surface;
   struct wl_listener focus_surface_listener;
   guint32 focus_serial;
   guint32 click_serial;
 
-  MetaCursorTracker *cursor_tracker;
   MetaWaylandSurface *cursor_surface;
-  struct wl_listener cursor_surface_destroy_listener;
-  int hotspot_x, hotspot_y;
 
   MetaWaylandPointerGrab *grab;
   MetaWaylandPointerGrab default_grab;
@@ -111,8 +124,6 @@ void meta_wayland_pointer_get_relative_coordinates (MetaWaylandPointer *pointer,
                                                     wl_fixed_t         *x,
                                                     wl_fixed_t         *y);
 
-void meta_wayland_pointer_update_cursor_surface (MetaWaylandPointer *pointer);
-
 void meta_wayland_pointer_create_new_resource (MetaWaylandPointer *pointer,
                                                struct wl_client   *client,
                                                struct wl_resource *seat_resource,
@@ -127,4 +138,8 @@ gboolean meta_wayland_pointer_can_popup (MetaWaylandPointer *pointer,
 
 MetaWaylandSurface *meta_wayland_pointer_get_top_popup (MetaWaylandPointer *pointer);
 
+MetaWaylandPointerClient * meta_wayland_pointer_get_pointer_client (MetaWaylandPointer *pointer,
+                                                                    struct wl_client   *client);
+void meta_wayland_pointer_unbind_pointer_client_resource (struct wl_resource *resource);
+
 #endif /* META_WAYLAND_POINTER_H */

src/wayland/meta-wayland-private.h

@@ -32,6 +32,7 @@
 #include "meta-wayland-versions.h"
 #include "meta-wayland-surface.h"
 #include "meta-wayland-seat.h"
+#include "meta-wayland-pointer-gestures.h"
 
 typedef struct _MetaXWaylandSelection MetaXWaylandSelection;
 

src/wayland/meta-wayland-seat.c

@@ -332,6 +332,8 @@ meta_wayland_seat_handle_event (MetaWaylandSeat *seat,
     case CLUTTER_BUTTON_PRESS:
     case CLUTTER_BUTTON_RELEASE:
     case CLUTTER_SCROLL:
+    case CLUTTER_TOUCHPAD_SWIPE:
+    case CLUTTER_TOUCHPAD_PINCH:
       return meta_wayland_pointer_handle_event (&seat->pointer, event);
 
     case CLUTTER_KEY_PRESS:
@@ -370,15 +372,6 @@ meta_wayland_seat_set_input_focus (MetaWaylandSeat    *seat,
   meta_wayland_data_device_set_keyboard_focus (&seat->data_device);
 }
 
-void
-meta_wayland_seat_update_cursor_surface (MetaWaylandSeat *seat)
-{
-  if ((seat->capabilities & WL_SEAT_CAPABILITY_POINTER) == 0)
-    return;
-
-  meta_wayland_pointer_update_cursor_surface (&seat->pointer);
-}
-
 gboolean
 meta_wayland_seat_get_grab_info (MetaWaylandSeat    *seat,
 				 MetaWaylandSurface *surface,

src/wayland/meta-wayland-seat.h

@@ -58,7 +58,6 @@ void meta_wayland_seat_set_input_focus (MetaWaylandSeat    *seat,
                                         MetaWaylandSurface *surface);
 
 void meta_wayland_seat_repick (MetaWaylandSeat *seat);
-void meta_wayland_seat_update_cursor_surface (MetaWaylandSeat *seat);
 
 gboolean meta_wayland_seat_get_grab_info (MetaWaylandSeat    *seat,
 					  MetaWaylandSurface *surface,

src/wayland/meta-wayland-surface.c

@@ -55,6 +55,11 @@
 #include "meta-surface-actor-wayland.h"
 #include "meta-xwayland-private.h"
 
+typedef struct _MetaWaylandSurfaceRolePrivate
+{
+  MetaWaylandSurface *surface;
+} MetaWaylandSurfaceRolePrivate;
+
 typedef enum
 {
   META_WAYLAND_SUBSURFACE_PLACEMENT_ABOVE,
@@ -68,24 +73,100 @@ typedef struct
   struct wl_listener sibling_destroy_listener;
 } MetaWaylandSubsurfacePlacementOp;
 
-int
-meta_wayland_surface_set_role (MetaWaylandSurface    *surface,
-                               MetaWaylandSurfaceRole role,
-                               struct wl_resource    *error_resource,
-                               uint32_t               error_code)
+GType meta_wayland_surface_get_type (void) G_GNUC_CONST;
+
+G_DEFINE_TYPE (MetaWaylandSurface, meta_wayland_surface, G_TYPE_OBJECT);
+
+GType meta_wayland_surface_role_get_type (void) G_GNUC_CONST;
+G_DEFINE_TYPE_WITH_PRIVATE (MetaWaylandSurfaceRole,
+                            meta_wayland_surface_role,
+                            G_TYPE_OBJECT);
+
+struct _MetaWaylandSurfaceRoleSubsurface
 {
-  if (surface->role == META_WAYLAND_SURFACE_ROLE_NONE ||
-      surface->role == role)
+  MetaWaylandSurfaceRole parent;
+};
+
+GType meta_wayland_surface_role_subsurface_get_type (void) G_GNUC_CONST;
+G_DEFINE_TYPE (MetaWaylandSurfaceRoleSubsurface,
+               meta_wayland_surface_role_subsurface,
+               META_TYPE_WAYLAND_SURFACE_ROLE);
+
+struct _MetaWaylandSurfaceRoleXdgSurface
+{
+  MetaWaylandSurfaceRole parent;
+};
+
+GType meta_wayland_surface_role_xdg_surface_get_type (void) G_GNUC_CONST;
+G_DEFINE_TYPE (MetaWaylandSurfaceRoleXdgSurface,
+               meta_wayland_surface_role_xdg_surface,
+               META_TYPE_WAYLAND_SURFACE_ROLE);
+
+struct _MetaWaylandSurfaceRoleXdgPopup
+{
+  MetaWaylandSurfaceRole parent;
+};
+
+GType meta_wayland_surface_role_xdg_popup_get_type (void) G_GNUC_CONST;
+G_DEFINE_TYPE (MetaWaylandSurfaceRoleXdgPopup,
+               meta_wayland_surface_role_xdg_popup,
+               META_TYPE_WAYLAND_SURFACE_ROLE);
+
+struct _MetaWaylandSurfaceRoleWlShellSurface
+{
+  MetaWaylandSurfaceRole parent;
+};
+
+GType meta_wayland_surface_role_wl_shell_surface_get_type (void) G_GNUC_CONST;
+G_DEFINE_TYPE (MetaWaylandSurfaceRoleWlShellSurface,
+               meta_wayland_surface_role_wl_shell_surface,
+               META_TYPE_WAYLAND_SURFACE_ROLE);
+
+struct _MetaWaylandSurfaceRoleDND
+{
+  MetaWaylandSurfaceRole parent;
+};
+
+GType meta_wayland_surface_role_dnd_get_type (void) G_GNUC_CONST;
+G_DEFINE_TYPE (MetaWaylandSurfaceRoleDND,
+               meta_wayland_surface_role_dnd,
+               META_TYPE_WAYLAND_SURFACE_ROLE);
+
+static void
+meta_wayland_surface_role_assigned (MetaWaylandSurfaceRole *surface_role);
+
+static void
+meta_wayland_surface_role_commit (MetaWaylandSurfaceRole  *surface_role,
+                                  MetaWaylandPendingState *pending);
+
+static gboolean
+meta_wayland_surface_role_is_on_output (MetaWaylandSurfaceRole *surface_role,
+                                        MetaMonitorInfo *info);
+
+gboolean
+meta_wayland_surface_assign_role (MetaWaylandSurface *surface,
+                                  GType               role_type)
+{
+  if (!surface->role)
     {
-      surface->role = role;
-      return 0;
+      MetaWaylandSurfaceRolePrivate *role_priv;
+
+      surface->role = g_object_new (role_type, NULL);
+      role_priv =
+        meta_wayland_surface_role_get_instance_private (surface->role);
+      role_priv->surface = surface;
+
+      meta_wayland_surface_role_assigned (surface->role);
+
+      return TRUE;
+    }
+  else if (G_OBJECT_TYPE (surface->role) != role_type)
+    {
+      return FALSE;
     }
   else
     {
-      wl_resource_post_error (error_resource, error_code,
-                              "wl_surface@%d already has a different role",
-                              wl_resource_get_id (surface->resource));
-      return -1;
+      return TRUE;
     }
 }
 
@@ -167,18 +248,24 @@ surface_process_damage (MetaWaylandSurface *surface,
   cairo_region_destroy (scaled_region);
 }
 
-static void
-cursor_surface_commit (MetaWaylandSurface      *surface,
-                       MetaWaylandPendingState *pending)
+void
+meta_wayland_surface_queue_pending_state_frame_callbacks (MetaWaylandSurface      *surface,
+                                                          MetaWaylandPendingState *pending)
 {
-  if (pending->newly_attached)
-    meta_wayland_seat_update_cursor_surface (surface->compositor->seat);
+  wl_list_insert_list (&surface->compositor->frame_callbacks,
+                       &pending->frame_callback_list);
+  wl_list_init (&pending->frame_callback_list);
 }
 
 static void
-dnd_surface_commit (MetaWaylandSurface      *surface,
+dnd_surface_commit (MetaWaylandSurfaceRole  *surface_role,
                     MetaWaylandPendingState *pending)
 {
+  MetaWaylandSurface *surface =
+    meta_wayland_surface_role_get_surface (surface_role);
+
+  meta_wayland_surface_queue_pending_state_frame_callbacks (surface, pending);
+
   meta_wayland_data_device_update_dnd_surface (&surface->compositor->seat->data_device);
 }
 
@@ -235,12 +322,28 @@ destroy_window (MetaWaylandSurface *surface)
 }
 
 static void
-toplevel_surface_commit (MetaWaylandSurface      *surface,
+queue_surface_actor_frame_callbacks (MetaWaylandSurface      *surface,
+                                     MetaWaylandPendingState *pending)
+{
+  MetaSurfaceActorWayland *surface_actor =
+    META_SURFACE_ACTOR_WAYLAND (surface->surface_actor);
+
+  meta_surface_actor_wayland_add_frame_callbacks (surface_actor,
+                                                  &pending->frame_callback_list);
+  wl_list_init (&pending->frame_callback_list);
+}
+
+static void
+toplevel_surface_commit (MetaWaylandSurfaceRole  *surface_role,
                          MetaWaylandPendingState *pending)
 {
+  MetaWaylandSurface *surface =
+    meta_wayland_surface_role_get_surface (surface_role);
   MetaWindow *window = surface->window;
 
-  if (surface->role == META_WAYLAND_SURFACE_ROLE_WL_SHELL_SURFACE)
+  queue_surface_actor_frame_callbacks (surface, pending);
+
+  if (META_IS_WAYLAND_SURFACE_ROLE_WL_SHELL_SURFACE (surface->role))
     {
       /* For wl_shell, it's equivalent to an unmap. Semantics
        * are poorly defined, so we can choose some that are
@@ -256,6 +359,12 @@ toplevel_surface_commit (MetaWaylandSurface      *surface,
           return;
         }
     }
+  else if (META_IS_WAYLAND_SURFACE_ROLE_XDG_POPUP (surface->role))
+    {
+      /* Ignore commits if we couldn't grab the pointer */
+      if (!window)
+        return;
+    }
   else
     {
       if (surface->buffer == NULL)
@@ -268,6 +377,8 @@ toplevel_surface_commit (MetaWaylandSurface      *surface,
         }
     }
 
+  g_assert (window != NULL);
+
   /* We resize X based surfaces according to X events */
   if (window->client_type == META_WINDOW_CLIENT_TYPE_WAYLAND)
     {
@@ -332,7 +443,9 @@ pending_state_init (MetaWaylandPendingState *state)
   state->scale = 0;
 
   state->input_region = NULL;
+  state->input_region_set = FALSE;
   state->opaque_region = NULL;
+  state->opaque_region_set = FALSE;
 
   state->damage = cairo_region_create ();
   state->buffer_destroy_listener.notify = surface_handle_pending_buffer_destroy;
@@ -382,12 +495,16 @@ move_pending_state (MetaWaylandPendingState *from,
 }
 
 static void
-subsurface_surface_commit (MetaWaylandSurface      *surface,
+subsurface_surface_commit (MetaWaylandSurfaceRole  *surface_role,
                            MetaWaylandPendingState *pending)
 {
+  MetaWaylandSurface *surface =
+    meta_wayland_surface_role_get_surface (surface_role);
   MetaSurfaceActorWayland *surface_actor =
     META_SURFACE_ACTOR_WAYLAND (surface->surface_actor);
 
+  queue_surface_actor_frame_callbacks (surface, pending);
+
   if (surface->buffer != NULL)
     clutter_actor_show (CLUTTER_ACTOR (surface_actor));
   else
@@ -485,8 +602,6 @@ static void
 apply_pending_state (MetaWaylandSurface      *surface,
                      MetaWaylandPendingState *pending)
 {
-  MetaWaylandCompositor *compositor = surface->compositor;
-
   if (pending->newly_attached)
     {
       if (!surface->buffer && surface->window)
@@ -510,42 +625,40 @@ apply_pending_state (MetaWaylandSurface      *surface,
   surface->offset_x += pending->dx;
   surface->offset_y += pending->dy;
 
-  if (pending->opaque_region)
+  if (pending->opaque_region_set)
     {
       if (surface->opaque_region)
         cairo_region_destroy (surface->opaque_region);
-      surface->opaque_region = cairo_region_reference (pending->opaque_region);
+      if (pending->opaque_region)
+        surface->opaque_region = cairo_region_reference (pending->opaque_region);
+      else
+        surface->opaque_region = NULL;
     }
 
-  if (pending->input_region)
+  if (pending->input_region_set)
     {
       if (surface->input_region)
         cairo_region_destroy (surface->input_region);
-      surface->input_region = cairo_region_reference (pending->input_region);
+      if (pending->input_region)
+        surface->input_region = cairo_region_reference (pending->input_region);
+      else
+        surface->input_region = NULL;
     }
 
-  /* wl_surface.frame */
-  wl_list_insert_list (&compositor->frame_callbacks, &pending->frame_callback_list);
-  wl_list_init (&pending->frame_callback_list);
-
-  switch (surface->role)
+  if (surface->role)
     {
-    case META_WAYLAND_SURFACE_ROLE_NONE:
-      break;
-    case META_WAYLAND_SURFACE_ROLE_CURSOR:
-      cursor_surface_commit (surface, pending);
-      break;
-    case META_WAYLAND_SURFACE_ROLE_DND:
-      dnd_surface_commit (surface, pending);
-      break;
-    case META_WAYLAND_SURFACE_ROLE_XDG_SURFACE:
-    case META_WAYLAND_SURFACE_ROLE_XDG_POPUP:
-    case META_WAYLAND_SURFACE_ROLE_WL_SHELL_SURFACE:
-      toplevel_surface_commit (surface, pending);
-      break;
-    case META_WAYLAND_SURFACE_ROLE_SUBSURFACE:
-      subsurface_surface_commit (surface, pending);
-      break;
+      meta_wayland_surface_role_commit (surface->role, pending);
+      g_assert (wl_list_empty (&pending->frame_callback_list));
+    }
+  else
+    {
+      /* Since there is no role assigned to the surface yet, keep frame
+       * callbacks queued until a role is assigned and we know how
+       * the surface will be drawn.
+       */
+      wl_list_insert_list (&surface->pending_frame_callback_list,
+                           &pending->frame_callback_list);
+      wl_list_init (&pending->frame_callback_list);
     }
 
   meta_surface_actor_wayland_sync_state (
@@ -678,6 +791,7 @@ wl_surface_set_opaque_region (struct wl_client *client,
       cairo_region_t *cr_region = meta_wayland_region_peek_cairo_region (region);
       surface->pending.opaque_region = cairo_region_copy (cr_region);
     }
+  surface->pending.opaque_region_set = TRUE;
 }
 
 static void
@@ -698,6 +812,7 @@ wl_surface_set_input_region (struct wl_client *client,
       cairo_region_t *cr_region = meta_wayland_region_peek_cairo_region (region);
       surface->pending.input_region = cairo_region_copy (cr_region);
     }
+  surface->pending.input_region_set = TRUE;
 }
 
 static void
@@ -852,16 +967,28 @@ set_surface_is_on_output (MetaWaylandSurface *surface,
     }
 }
 
+static gboolean
+actor_surface_is_on_output (MetaWaylandSurfaceRole *surface_role,
+                            MetaMonitorInfo        *monitor)
+{
+  MetaWaylandSurface *surface =
+    meta_wayland_surface_role_get_surface (surface_role);
+  MetaSurfaceActorWayland *actor =
+    META_SURFACE_ACTOR_WAYLAND (surface->surface_actor);
+
+  return meta_surface_actor_wayland_is_on_monitor (actor, monitor);
+}
+
 static void
 update_surface_output_state (gpointer key, gpointer value, gpointer user_data)
 {
   MetaWaylandOutput *wayland_output = value;
   MetaWaylandSurface *surface = user_data;
-  MetaSurfaceActorWayland *actor =
-    META_SURFACE_ACTOR_WAYLAND (surface->surface_actor);
   MetaMonitorInfo *monitor;
   gboolean is_on_output;
 
+  g_assert (surface->role);
+
   monitor = wayland_output->monitor_info;
   if (!monitor)
     {
@@ -869,7 +996,7 @@ update_surface_output_state (gpointer key, gpointer value, gpointer user_data)
       return;
     }
 
-  is_on_output = meta_surface_actor_wayland_is_on_monitor (actor, monitor);
+  is_on_output = meta_wayland_surface_role_is_on_output (surface->role, monitor);
   set_surface_is_on_output (surface, wayland_output, is_on_output);
 }
 
@@ -898,6 +1025,9 @@ wl_surface_destructor (struct wl_resource *resource)
 {
   MetaWaylandSurface *surface = wl_resource_get_user_data (resource);
   MetaWaylandCompositor *compositor = surface->compositor;
+  MetaWaylandFrameCallback *cb, *next;
+
+  g_clear_object (&surface->role);
 
   /* If we still have a window at the time of destruction, that means that
    * the client is disconnecting, as the resources are destroyed in a random
@@ -922,6 +1052,9 @@ wl_surface_destructor (struct wl_resource *resource)
 
   g_hash_table_unref (surface->outputs);
 
+  wl_list_for_each_safe (cb, next, &surface->pending_frame_callback_list, link)
+    wl_resource_destroy (cb->resource);
+
   if (surface->resource)
     wl_resource_set_user_data (surface->resource, NULL);
 
@@ -936,7 +1069,7 @@ wl_surface_destructor (struct wl_resource *resource)
   if (surface->gtk_surface)
     wl_resource_destroy (surface->gtk_surface);
 
-  g_slice_free (MetaWaylandSurface, surface);
+  g_object_unref (surface);
 
   meta_wayland_compositor_repick (compositor);
 }
@@ -947,7 +1080,7 @@ meta_wayland_surface_create (MetaWaylandCompositor *compositor,
                              struct wl_resource    *compositor_resource,
                              guint32                id)
 {
-  MetaWaylandSurface *surface = g_slice_new0 (MetaWaylandSurface);
+  MetaWaylandSurface *surface = g_object_new (META_TYPE_WAYLAND_SURFACE, NULL);
 
   surface->compositor = compositor;
   surface->scale = 1;
@@ -958,6 +1091,8 @@ meta_wayland_surface_create (MetaWaylandCompositor *compositor,
   surface->buffer_destroy_listener.notify = surface_handle_buffer_destroy;
   surface->surface_actor = g_object_ref_sink (meta_surface_actor_wayland_new (surface));
 
+  wl_list_init (&surface->pending_frame_callback_list);
+
   sync_drag_dest_funcs (surface);
 
   surface->outputs = g_hash_table_new (NULL, NULL);
@@ -1247,11 +1382,14 @@ xdg_shell_get_xdg_surface (struct wl_client *client,
       return;
     }
 
-  if (meta_wayland_surface_set_role (surface,
-                                     META_WAYLAND_SURFACE_ROLE_XDG_SURFACE,
-                                     surface_resource,
-                                     XDG_SHELL_ERROR_ROLE) != 0)
-    return;
+  if (!meta_wayland_surface_assign_role (surface,
+                                         META_TYPE_WAYLAND_SURFACE_ROLE_XDG_SURFACE))
+    {
+      wl_resource_post_error (resource, XDG_SHELL_ERROR_ROLE,
+                              "wl_surface@%d already has a different role",
+                              wl_resource_get_id (surface->resource));
+      return;
+    }
 
   surface->xdg_surface = wl_resource_create (client, &xdg_surface_interface, wl_resource_get_version (resource), id);
   wl_resource_set_implementation (surface->xdg_surface, &meta_wayland_xdg_surface_interface, surface, xdg_surface_destructor);
@@ -1347,9 +1485,6 @@ xdg_shell_get_xdg_popup (struct wl_client *client,
   MetaDisplay *display = meta_get_display ();
   MetaWaylandPopup *popup;
 
-  if (parent_surf == NULL || parent_surf->window == NULL)
-    return;
-
   if (surface->xdg_popup != NULL)
     {
       wl_resource_post_error (surface_resource,
@@ -1358,13 +1493,18 @@ xdg_shell_get_xdg_popup (struct wl_client *client,
       return;
     }
 
-  if (meta_wayland_surface_set_role (surface,
-                                     META_WAYLAND_SURFACE_ROLE_XDG_POPUP,
-                                     surface_resource,
-                                     XDG_SHELL_ERROR_ROLE) != 0)
-    return;
+  if (!meta_wayland_surface_assign_role (surface,
+                                         META_TYPE_WAYLAND_SURFACE_ROLE_XDG_POPUP))
+    {
+      wl_resource_post_error (resource, XDG_SHELL_ERROR_ROLE,
+                              "wl_surface@%d already has a different role",
+                              wl_resource_get_id (surface->resource));
+      return;
+    }
 
-  if (parent_surf->xdg_popup == NULL && parent_surf->xdg_surface == NULL)
+  if (parent_surf == NULL ||
+      parent_surf->window == NULL ||
+      (parent_surf->xdg_popup == NULL && parent_surf->xdg_surface == NULL))
     {
       wl_resource_post_error (resource,
                               XDG_POPUP_ERROR_INVALID_PARENT,
@@ -1696,11 +1836,14 @@ wl_shell_get_shell_surface (struct wl_client *client,
       return;
     }
 
-  if (meta_wayland_surface_set_role (surface,
-                                     META_WAYLAND_SURFACE_ROLE_WL_SHELL_SURFACE,
-                                     surface_resource,
-                                     WL_SHELL_ERROR_ROLE) != 0)
-    return;
+  if (!meta_wayland_surface_assign_role (surface,
+                                         META_TYPE_WAYLAND_SURFACE_ROLE_WL_SHELL_SURFACE))
+    {
+      wl_resource_post_error (resource, WL_SHELL_ERROR_ROLE,
+                              "wl_surface@%d already has a different role",
+                              wl_resource_get_id (surface->resource));
+      return;
+    }
 
   surface->wl_shell_surface = wl_resource_create (client, &wl_shell_surface_interface, wl_resource_get_version (resource), id);
   wl_resource_set_implementation (surface->wl_shell_surface, &meta_wayland_wl_shell_surface_interface, surface, wl_shell_surface_destructor);
@@ -2045,11 +2188,17 @@ wl_subcompositor_get_subsurface (struct wl_client *client,
       return;
     }
 
-  if (meta_wayland_surface_set_role (surface,
-                                     META_WAYLAND_SURFACE_ROLE_SUBSURFACE,
-                                     surface_resource,
-                                     WL_SHELL_ERROR_ROLE) != 0)
-    return;
+  if (!meta_wayland_surface_assign_role (surface,
+                                         META_TYPE_WAYLAND_SURFACE_ROLE_SUBSURFACE))
+    {
+      /* FIXME: There is no subcompositor "role" error yet, so lets just use something
+       * similar until there is.
+       */
+      wl_resource_post_error (resource, WL_SHELL_ERROR_ROLE,
+                              "wl_surface@%d already has a different role",
+                              wl_resource_get_id (surface->resource));
+      return;
+    }
 
   surface->wl_subsurface = wl_resource_create (client, &wl_subsurface_interface, wl_resource_get_version (resource), id);
   wl_resource_set_implementation (surface->wl_subsurface, &meta_wayland_wl_subsurface_interface, surface, wl_subsurface_destructor);
@@ -2259,3 +2408,168 @@ meta_wayland_surface_get_toplevel_window (MetaWaylandSurface *surface)
 
   return NULL;
 }
+
+static void
+meta_wayland_surface_init (MetaWaylandSurface *surface)
+{
+}
+
+static void
+meta_wayland_surface_class_init (MetaWaylandSurfaceClass *klass)
+{
+}
+
+static void
+meta_wayland_surface_role_init (MetaWaylandSurfaceRole *role)
+{
+}
+
+static void
+meta_wayland_surface_role_class_init (MetaWaylandSurfaceRoleClass *klass)
+{
+}
+
+static void
+meta_wayland_surface_role_assigned (MetaWaylandSurfaceRole *surface_role)
+{
+  META_WAYLAND_SURFACE_ROLE_GET_CLASS (surface_role)->assigned (surface_role);
+}
+
+static void
+meta_wayland_surface_role_commit (MetaWaylandSurfaceRole  *surface_role,
+                                  MetaWaylandPendingState *pending)
+{
+  META_WAYLAND_SURFACE_ROLE_GET_CLASS (surface_role)->commit (surface_role,
+                                                              pending);
+}
+
+static gboolean
+meta_wayland_surface_role_is_on_output (MetaWaylandSurfaceRole *surface_role,
+                                        MetaMonitorInfo        *monitor)
+{
+  MetaWaylandSurfaceRoleClass *klass;
+
+  klass = META_WAYLAND_SURFACE_ROLE_GET_CLASS (surface_role);
+  if (klass->is_on_output)
+    return klass->is_on_output (surface_role, monitor);
+  else
+    return FALSE;
+}
+
+MetaWaylandSurface *
+meta_wayland_surface_role_get_surface (MetaWaylandSurfaceRole *role)
+{
+  MetaWaylandSurfaceRolePrivate *priv =
+    meta_wayland_surface_role_get_instance_private (role);
+
+  return priv->surface;
+}
+
+void
+meta_wayland_surface_queue_pending_frame_callbacks (MetaWaylandSurface *surface)
+{
+  wl_list_insert_list (&surface->compositor->frame_callbacks,
+                       &surface->pending_frame_callback_list);
+  wl_list_init (&surface->pending_frame_callback_list);
+}
+
+static void
+default_role_assigned (MetaWaylandSurfaceRole *surface_role)
+{
+  MetaWaylandSurface *surface =
+    meta_wayland_surface_role_get_surface (surface_role);
+
+  meta_wayland_surface_queue_pending_frame_callbacks (surface);
+}
+
+static void
+actor_surface_assigned (MetaWaylandSurfaceRole *surface_role)
+{
+  MetaWaylandSurface *surface =
+    meta_wayland_surface_role_get_surface (surface_role);
+  MetaSurfaceActorWayland *surface_actor =
+    META_SURFACE_ACTOR_WAYLAND (surface->surface_actor);
+
+  meta_surface_actor_wayland_add_frame_callbacks (surface_actor,
+                                                  &surface->pending_frame_callback_list);
+  wl_list_init (&surface->pending_frame_callback_list);
+}
+
+static void
+meta_wayland_surface_role_dnd_init (MetaWaylandSurfaceRoleDND *role)
+{
+}
+
+static void
+meta_wayland_surface_role_dnd_class_init (MetaWaylandSurfaceRoleDNDClass *klass)
+{
+  MetaWaylandSurfaceRoleClass *surface_role_class =
+    META_WAYLAND_SURFACE_ROLE_CLASS (klass);
+
+  surface_role_class->assigned = default_role_assigned;
+  surface_role_class->commit = dnd_surface_commit;
+}
+
+static void
+meta_wayland_surface_role_xdg_surface_init (MetaWaylandSurfaceRoleXdgSurface *role)
+{
+}
+
+static void
+meta_wayland_surface_role_xdg_surface_class_init (MetaWaylandSurfaceRoleXdgSurfaceClass *klass)
+{
+  MetaWaylandSurfaceRoleClass *surface_role_class =
+    META_WAYLAND_SURFACE_ROLE_CLASS (klass);
+
+  surface_role_class->assigned = actor_surface_assigned;
+  surface_role_class->commit = toplevel_surface_commit;
+  surface_role_class->is_on_output = actor_surface_is_on_output;
+}
+
+static void
+meta_wayland_surface_role_xdg_popup_init (MetaWaylandSurfaceRoleXdgPopup *role)
+{
+}
+
+static void
+meta_wayland_surface_role_xdg_popup_class_init (MetaWaylandSurfaceRoleXdgPopupClass *klass)
+{
+  MetaWaylandSurfaceRoleClass *surface_role_class =
+    META_WAYLAND_SURFACE_ROLE_CLASS (klass);
+
+  surface_role_class->assigned = actor_surface_assigned;
+  surface_role_class->commit = toplevel_surface_commit;
+  surface_role_class->is_on_output = actor_surface_is_on_output;
+}
+
+static void
+meta_wayland_surface_role_wl_shell_surface_init (MetaWaylandSurfaceRoleWlShellSurface *role)
+{
+}
+
+static void
+meta_wayland_surface_role_wl_shell_surface_class_init (MetaWaylandSurfaceRoleWlShellSurfaceClass *klass)
+{
+  MetaWaylandSurfaceRoleClass *surface_role_class =
+    META_WAYLAND_SURFACE_ROLE_CLASS (klass);
+
+  surface_role_class->assigned = actor_surface_assigned;
+  surface_role_class->commit = toplevel_surface_commit;
+  surface_role_class->is_on_output = actor_surface_is_on_output;
+}
+
+static void
+meta_wayland_surface_role_subsurface_init (MetaWaylandSurfaceRoleSubsurface *role)
+{
+}
+
+static void
+meta_wayland_surface_role_subsurface_class_init (MetaWaylandSurfaceRoleSubsurfaceClass *klass)
+{
+  MetaWaylandSurfaceRoleClass *surface_role_class =
+    META_WAYLAND_SURFACE_ROLE_CLASS (klass);
+
+  surface_role_class->assigned = actor_surface_assigned;
+  surface_role_class->commit = subsurface_surface_commit;
+  surface_role_class->is_on_output = actor_surface_is_on_output;
+}

src/wayland/meta-wayland-surface.h

@@ -30,24 +30,67 @@
 #include <meta/meta-cursor-tracker.h>
 #include "meta-wayland-types.h"
 #include "meta-surface-actor.h"
+#include "backends/meta-monitor-manager-private.h"
+
+typedef struct _MetaWaylandPendingState MetaWaylandPendingState;
+
+#define META_TYPE_WAYLAND_SURFACE (meta_wayland_surface_get_type ())
+G_DECLARE_FINAL_TYPE (MetaWaylandSurface,
+                      meta_wayland_surface,
+                      META, WAYLAND_SURFACE,
+                      GObject);
+
+#define META_TYPE_WAYLAND_SURFACE_ROLE (meta_wayland_surface_role_get_type ())
+G_DECLARE_DERIVABLE_TYPE (MetaWaylandSurfaceRole, meta_wayland_surface_role,
+                          META, WAYLAND_SURFACE_ROLE, GObject);
+
+struct _MetaWaylandSurfaceRoleClass
+{
+  GObjectClass parent_class;
+
+  void (*assigned) (MetaWaylandSurfaceRole *surface_role);
+  void (*commit) (MetaWaylandSurfaceRole  *surface_role,
+                  MetaWaylandPendingState *pending);
+  gboolean (*is_on_output) (MetaWaylandSurfaceRole *surface_role,
+                            MetaMonitorInfo        *monitor);
+};
 
 struct _MetaWaylandSerial {
   gboolean set;
   uint32_t value;
 };
 
-typedef enum
-{
-  META_WAYLAND_SURFACE_ROLE_NONE,
-  META_WAYLAND_SURFACE_ROLE_SUBSURFACE,
-  META_WAYLAND_SURFACE_ROLE_XDG_SURFACE,
-  META_WAYLAND_SURFACE_ROLE_XDG_POPUP,
-  META_WAYLAND_SURFACE_ROLE_WL_SHELL_SURFACE,
-  META_WAYLAND_SURFACE_ROLE_CURSOR,
-  META_WAYLAND_SURFACE_ROLE_DND,
-} MetaWaylandSurfaceRole;
+#define META_TYPE_WAYLAND_SURFACE_ROLE_SUBSURFACE (meta_wayland_surface_role_subsurface_get_type ())
+G_DECLARE_FINAL_TYPE (MetaWaylandSurfaceRoleSubsurface,
+                      meta_wayland_surface_role_subsurface,
+                      META, WAYLAND_SURFACE_ROLE_SUBSURFACE,
+                      MetaWaylandSurfaceRole);
 
-typedef struct
+#define META_TYPE_WAYLAND_SURFACE_ROLE_XDG_SURFACE (meta_wayland_surface_role_xdg_surface_get_type ())
+G_DECLARE_FINAL_TYPE (MetaWaylandSurfaceRoleXdgSurface,
+                      meta_wayland_surface_role_xdg_surface,
+                      META, WAYLAND_SURFACE_ROLE_XDG_SURFACE,
+                      MetaWaylandSurfaceRole);
+
+#define META_TYPE_WAYLAND_SURFACE_ROLE_XDG_POPUP (meta_wayland_surface_role_xdg_popup_get_type ())
+G_DECLARE_FINAL_TYPE (MetaWaylandSurfaceRoleXdgPopup,
+                      meta_wayland_surface_role_xdg_popup,
+                      META, WAYLAND_SURFACE_ROLE_XDG_POPUP,
+                      MetaWaylandSurfaceRole);
+
+#define META_TYPE_WAYLAND_SURFACE_ROLE_WL_SHELL_SURFACE (meta_wayland_surface_role_wl_shell_surface_get_type ())
+G_DECLARE_FINAL_TYPE (MetaWaylandSurfaceRoleWlShellSurface,
+                      meta_wayland_surface_role_wl_shell_surface,
+                      META, WAYLAND_SURFACE_ROLE_WL_SHELL_SURFACE,
+                      MetaWaylandSurfaceRole);
+
+#define META_TYPE_WAYLAND_SURFACE_ROLE_DND (meta_wayland_surface_role_dnd_get_type ())
+G_DECLARE_FINAL_TYPE (MetaWaylandSurfaceRoleDND,
+                      meta_wayland_surface_role_dnd,
+                      META, WAYLAND_SURFACE_ROLE_DND,
+                      MetaWaylandSurfaceRole);
+
+struct _MetaWaylandPendingState
 {
   /* wl_surface.attach */
   gboolean newly_attached;
@@ -62,14 +105,16 @@ typedef struct
   cairo_region_t *damage;
 
   cairo_region_t *input_region;
+  gboolean input_region_set;
   cairo_region_t *opaque_region;
+  gboolean opaque_region_set;
 
   /* wl_surface.frame */
   struct wl_list frame_callback_list;
 
   MetaRectangle new_geometry;
   gboolean has_new_geometry;
-} MetaWaylandPendingState;
+};
 
 struct _MetaWaylandDragDestFuncs
 {
@@ -87,11 +132,13 @@ struct _MetaWaylandDragDestFuncs
 
 struct _MetaWaylandSurface
 {
+  GObject parent;
+
   /* Generic stuff */
   struct wl_resource *resource;
   MetaWaylandCompositor *compositor;
   MetaSurfaceActor *surface_actor;
-  MetaWaylandSurfaceRole role;
+  MetaWaylandSurfaceRole *role;
   MetaWindow *window;
   MetaWaylandBuffer *buffer;
   struct wl_listener buffer_destroy_listener;
@@ -102,6 +149,11 @@ struct _MetaWaylandSurface
   GList *subsurfaces;
   GHashTable *outputs;
 
+  /* List of pending frame callbacks that needs to stay queued longer than one
+   * commit sequence, such as when it has not yet been assigned a role.
+   */
+  struct wl_list pending_frame_callback_list;
+
   struct {
     const MetaWaylandDragDestFuncs *funcs;
   } dnd;
@@ -164,10 +216,8 @@ MetaWaylandSurface *meta_wayland_surface_create (MetaWaylandCompositor *composit
                                                  struct wl_resource    *compositor_resource,
                                                  guint32                id);
 
-int                meta_wayland_surface_set_role (MetaWaylandSurface    *surface,
-                                                  MetaWaylandSurfaceRole role,
-                                                  struct wl_resource    *error_resource,
-                                                  uint32_t               error_code);
+gboolean            meta_wayland_surface_assign_role (MetaWaylandSurface *surface,
+                                                      GType               role_type);
 
 void                meta_wayland_surface_set_window (MetaWaylandSurface *surface,
                                                      MetaWindow         *window);
@@ -195,4 +245,11 @@ void                meta_wayland_surface_update_outputs (MetaWaylandSurface *sur
 
 MetaWindow *        meta_wayland_surface_get_toplevel_window (MetaWaylandSurface *surface);
 
+void                meta_wayland_surface_queue_pending_frame_callbacks (MetaWaylandSurface *surface);
+
+void                meta_wayland_surface_queue_pending_state_frame_callbacks (MetaWaylandSurface      *surface,
+                                                                              MetaWaylandPendingState *pending);
+
+MetaWaylandSurface * meta_wayland_surface_role_get_surface (MetaWaylandSurfaceRole *role);
+
 #endif

src/wayland/meta-wayland-types.h

@@ -43,4 +43,6 @@ typedef struct _MetaWaylandOutput MetaWaylandOutput;
 
 typedef struct _MetaWaylandSerial MetaWaylandSerial;
 
+typedef struct _MetaWaylandPointerClient MetaWaylandPointerClient;
+
 #endif

src/wayland/meta-wayland-versions.h

@@ -44,5 +44,6 @@
 #define META_XSERVER_VERSION                1
 #define META_GTK_SHELL_VERSION              2
 #define META_WL_SUBCOMPOSITOR_VERSION       1
+#define META__WL_POINTER_GESTURES_VERSION   1
 
 #endif

src/wayland/meta-wayland.c

@@ -207,6 +207,28 @@ meta_wayland_compositor_handle_event (MetaWaylandCompositor *compositor,
   return meta_wayland_seat_handle_event (compositor->seat, event);
 }
 
+/* meta_wayland_compositor_update_key_state:
+ * @compositor: the #MetaWaylandCompositor
+ * @key_vector: bit vector of key states
+ * @key_vector_len: length of @key_vector
+ * @offset: the key for the first evdev keycode is found at this offset in @key_vector
+ *
+ * This function is used to resynchronize the key state that Mutter
+ * is tracking with the actual keyboard state. This is useful, for example,
+ * to handle changes in key state when a nested compositor doesn't
+ * have focus. We need to fix up the XKB modifier tracking and deliver
+ * any modifier changes to clients.
+ */
+void
+meta_wayland_compositor_update_key_state (MetaWaylandCompositor *compositor,
+                                          char                  *key_vector,
+                                          int                    key_vector_len,
+                                          int                    offset)
+{
+  meta_wayland_keyboard_update_key_state (&compositor->seat->keyboard,
+                                          key_vector, key_vector_len, offset);
+}
+
 void
 meta_wayland_compositor_destroy_frame_callbacks (MetaWaylandCompositor *compositor,
                                                  MetaWaylandSurface    *surface)
@@ -310,6 +332,7 @@ meta_wayland_init (void)
   meta_wayland_outputs_init (compositor);
   meta_wayland_data_device_manager_init (compositor);
   meta_wayland_shell_init (compositor);
+  meta_wayland_pointer_gestures_init (compositor);
   meta_wayland_seat_init (compositor);
 
   compositor->display_name = wl_display_add_socket_auto (compositor->wayland_display);

src/wayland/meta-wayland.h

@@ -39,6 +39,10 @@ void                    meta_wayland_compositor_update          (MetaWaylandComp
                                                                  const ClutterEvent    *event);
 gboolean                meta_wayland_compositor_handle_event    (MetaWaylandCompositor *compositor,
                                                                  const ClutterEvent    *event);
+void                    meta_wayland_compositor_update_key_state (MetaWaylandCompositor *compositor,
+                                                                 char                  *key_vector,
+                                                                  int                    key_vector_len,
+                                                                  int                    offset);
 void                    meta_wayland_compositor_repick          (MetaWaylandCompositor *compositor);
 
 void                    meta_wayland_compositor_set_input_focus (MetaWaylandCompositor *compositor,

src/wayland/meta-window-wayland.c

@@ -66,7 +66,7 @@ meta_window_wayland_manage (MetaWindow *window)
                                    0);
   }
 
-  if (window->surface->role == META_WAYLAND_SURFACE_ROLE_XDG_POPUP)
+  if (META_IS_WAYLAND_SURFACE_ROLE_XDG_POPUP (window->surface->role))
     {
       MetaWaylandSurface *parent = window->surface->popup.parent;
 

src/wayland/meta-xwayland-selection.c

@@ -33,6 +33,7 @@
 #include <gio/gunixinputstream.h>
 #include <gdk/gdkx.h>
 #include <X11/Xatom.h>
+#include <X11/extensions/Xfixes.h>
 #include <meta/errors.h>
 #include "meta-xwayland-private.h"
 #include "meta-xwayland-selection-private.h"

src/wayland/meta-xwayland.c

@@ -32,6 +32,24 @@
 #include <sys/socket.h>
 #include <sys/un.h>
 
+#include "compositor/meta-surface-actor-wayland.h"
+
+#define META_TYPE_WAYLAND_SURFACE_ROLE_XWAYLAND (meta_wayland_surface_role_xwayland_get_type ())
+G_DECLARE_FINAL_TYPE (MetaWaylandSurfaceRoleXWayland,
+                      meta_wayland_surface_role_xwayland,
+                      META, WAYLAND_SURFACE_ROLE_XWAYLAND,
+                      MetaWaylandSurfaceRole);
+
+struct _MetaWaylandSurfaceRoleXWayland
+{
+  MetaWaylandSurfaceRole parent;
+};
+
+GType meta_wayland_surface_role_xwayland_get_type (void) G_GNUC_CONST;
+G_DEFINE_TYPE (MetaWaylandSurfaceRoleXWayland,
+               meta_wayland_surface_role_xwayland,
+               META_TYPE_WAYLAND_SURFACE_ROLE);
+
 static void
 associate_window_with_surface (MetaWindow         *window,
                                MetaWaylandSurface *surface)
@@ -45,6 +63,16 @@ associate_window_with_surface (MetaWindow         *window,
   if (window->surface)
     window->surface->window = NULL;
 
+  if (!meta_wayland_surface_assign_role (surface,
+                                         META_TYPE_WAYLAND_SURFACE_ROLE_XWAYLAND))
+    {
+      wl_resource_post_error (surface->resource,
+                              WL_DISPLAY_ERROR_INVALID_OBJECT,
+                              "wl_surface@%d already has a different role",
+                              wl_resource_get_id (surface->resource));
+      return;
+    }
+
   meta_wayland_surface_set_window (surface, window);
   window->surface = surface;
 
@@ -543,3 +571,53 @@ meta_xwayland_stop (MetaXWaylandManager *manager)
       g_clear_pointer (&manager->lock_file, g_free);
     }
 }
+
+static void
+xwayland_surface_assigned (MetaWaylandSurfaceRole *surface_role)
+{
+  MetaWaylandSurface *surface =
+    meta_wayland_surface_role_get_surface (surface_role);
+
+  /* See comment in xwayland_surface_commit for why we reply even though the
+   * surface may not be drawn the next frame.
+   */
+  wl_list_insert_list (&surface->compositor->frame_callbacks,
+                       &surface->pending_frame_callback_list);
+  wl_list_init (&surface->pending_frame_callback_list);
+}
+
+static void
+xwayland_surface_commit (MetaWaylandSurfaceRole  *surface_role,
+                         MetaWaylandPendingState *pending)
+{
+  MetaWaylandSurface *surface =
+    meta_wayland_surface_role_get_surface (surface_role);
+
+  /* For Xwayland windows, throttling frames when the window isn't actually
+   * drawn is less useful, because Xwayland still has to do the drawing sent
+   * from the application - the throttling would only be of sending us damage
+   * messages, so we simplify and send frame callbacks after the next paint of
+   * the screen, whether the window was drawn or not.
+   *
+   * Currently it may take a few frames before we draw the window, for not
+   * completely understood reasons, and in that case, not thottling frame
+   * callbacks to drawing has the happy side effect that we avoid showing the
+   * user the initial black frame from when the window is mapped empty.
+   */
+  meta_wayland_surface_queue_pending_state_frame_callbacks (surface, pending);
+}
+
+static void
+meta_wayland_surface_role_xwayland_init (MetaWaylandSurfaceRoleXWayland *role)
+{
+}
+
+static void
+meta_wayland_surface_role_xwayland_class_init (MetaWaylandSurfaceRoleXWaylandClass *klass)
+{
+  MetaWaylandSurfaceRoleClass *surface_role_class =
+    META_WAYLAND_SURFACE_ROLE_CLASS (klass);
+
+  surface_role_class->assigned = xwayland_surface_assigned;
+  surface_role_class->commit = xwayland_surface_commit;
+}

src/wayland/protocol/pointer-gestures.xml

@@ -0,0 +1,176 @@
+<protocol name="pointer_gestures">
+  <interface name="_wl_pointer_gestures" version="1">
+    <description summary="touchpad gestures">
+      A global interface to provide semantic touchpad gestures for a given
+      pointer.
+
+      Two gestures are currently supported: swipe and zoom/rotate.
+      All gestures follow a three-stage cycle: begin, update, end and
+      are identified by a unique id.
+
+      Warning! The protocol described in this file is experimental. Each
+      version of this protocol should be considered incompatible with any
+      other version, and a client binding to a version different to the one
+      advertised will be terminated. Once the protocol is declared stable,
+      compatibility is guaranteed, the '_' prefix will be removed from the
+      name and the version will be reset to 1.
+    </description>
+
+    <enum name="error">
+      <entry name="version_mismatch" value="0"/>
+    </enum>
+
+    <request name="get_swipe_gesture">
+      <description summary="get swipe gesture">
+	Create a swipe gesture object. See the
+	wl_pointer_gesture_swipe interface for details.
+      </description>
+      <arg name="id" type="new_id" interface="_wl_pointer_gesture_swipe"/>
+      <arg name="pointer" type="object" interface="wl_pointer"/>
+    </request>
+
+    <request name="get_pinch_gesture">
+      <description summary="get pinch gesture">
+	Create a pinch gesture object. See the
+	wl_pointer_gesture_pinch interface for details.
+      </description>
+      <arg name="id" type="new_id" interface="_wl_pointer_gesture_pinch"/>
+      <arg name="pointer" type="object" interface="wl_pointer"/>
+    </request>
+  </interface>
+
+  <interface name="_wl_pointer_gesture_swipe" version="1">
+    <description summary="a swipe gesture object">
+      A swipe gesture object notifies a client about a multi-finger swipe
+      gesture detected on an indirect input device such as a touchpad.
+      The gesture is usually initiated by multiple fingers moving in the
+      same direction but once initiated the direction may change.
+      The precise conditions of when such a gesture is detected are
+      implementation-dependent.
+
+      A gesture consists of three stages: begin, update (optional) and end.
+      There cannot be multiple simultaneous pinch or swipe gestures on a
+      same pointer/seat, how compositors prevent these situations is
+      implementation-dependent.
+
+      A gesture may be cancelled by the compositor or the hardware.
+      Clients should not consider performing permanent or irreversible
+      actions until the end of a gesture has been received.
+    </description>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy the pointer swipe gesture object"/>
+    </request>
+
+    <event name="begin">
+      <description summary="multi-finger swipe begin">
+	This event is sent when a multi-finger swipe gesture is detected
+	on the device.
+      </description>
+      <arg name="serial" type="uint"/>
+      <arg name="time" type="uint" summary="timestamp with millisecond granularity"/>
+      <arg name="surface" type="object" interface="wl_surface"/>
+      <arg name="fingers" type="uint" summary="number of fingers"/>
+    </event>
+
+    <event name="update">
+      <description summary="multi-finger swipe motion">
+	This event is sent when a multi-finger swipe gesture changes the
+	position of the logical center.
+
+	The dx and dy coordinates are relative coordinates of the logical
+	center of the gesture compared to the previous event.
+      </description>
+      <arg name="time" type="uint" summary="timestamp with millisecond granularity"/>
+      <arg name="dx" type="fixed" summary="delta x coordinate in surface coordinate space"/>
+      <arg name="dy" type="fixed" summary="delta y coordinate in surface coordinate space"/>
+    </event>
+
+    <event name="end">
+      <description summary="multi-finger swipe end">
+	This event is sent when a multi-finger swipe gesture ceases to
+	be valid. This may happen when one or more finger is lifted or
+	the gesture is cancelled.
+
+	When a gesture is cancelled, the client should undo state changes
+	caused by this gesture. What causes a gesture to be cancelled is
+	implementation-dependent.
+      </description>
+      <arg name="serial" type="uint"/>
+      <arg name="time" type="uint" summary="timestamp with millisecond granularity"/>
+      <arg name="cancelled" type="int" summary="1 if the gesture was cancelled, 0 otherwise"/>
+    </event>
+  </interface>
+
+  <interface name="_wl_pointer_gesture_pinch" version="1">
+    <description summary="a pinch gesture object">
+      A pinch gesture object notifies a client about a multi-finger pinch
+      gesture detected on an indirect input device such as a touchpad.
+      The gesture is usually initiated by multiple fingers moving towards
+      each other or away from each other, or by two or more fingers rotating
+      around a logical center of gravity.  The precise conditions of when
+      such a gesture is detected are implementation-dependent.
+
+      A gesture consists of three stages: begin, update (optional) and end.
+      There cannot be multiple simultaneous pinch or swipe gestures on a
+      same pointer/seat, how compositors prevent these situations is
+      implementation-dependent.
+
+      A gesture may be cancelled by the compositor or the hardware.
+      Clients should not consider performing permanent or irreversible
+      actions until the end of a gesture has been received.
+    </description>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy the pinch gesture object"/>
+    </request>
+
+    <event name="begin">
+      <description summary="multi-finger pinch begin">
+	This event is sent when a multi-finger pinch gesture is detected
+	on the device.
+      </description>
+      <arg name="serial" type="uint"/>
+      <arg name="time" type="uint" summary="timestamp with millisecond granularity"/>
+      <arg name="surface" type="object" interface="wl_surface"/>
+      <arg name="fingers" type="uint" summary="number of fingers"/>
+    </event>
+
+    <event name="update">
+      <description summary="multi-finger pinch motion">
+	This event is sent when a multi-finger pinch gesture changes the
+	position of the logical center, the rotation or the relative scale.
+
+	The dx and dy coordinates are relative coordinates in the
+	surface coordinate space of the logical center of the gesture.
+
+	The scale factor is an absolute scale compared to the
+	pointer_gesture_pinch.begin event, e.g. a scale of 2 means the fingers
+	are now twice as far apart as on pointer_gesture_pinch.begin.
+
+	The rotation is the relative angle in degrees clockwise compared to the previous
+	pointer_gesture_pinch.begin or pointer_gesture_pinch.update event.
+      </description>
+      <arg name="time" type="uint" summary="timestamp with millisecond granularity"/>
+      <arg name="dx" type="fixed" summary="delta x coordinate in surface coordinate space"/>
+      <arg name="dy" type="fixed" summary="delta y coordinate in surface coordinate space"/>
+      <arg name="scale" type="fixed" summary="scale relative to the initial finger position"/>
+      <arg name="rotation" type="fixed" summary="angle in degrees cw relative to the previous event"/>
+    </event>
+
+    <event name="end">
+      <description summary="multi-finger pinch end">
+	This event is sent when a multi-finger pinch gesture ceases to
+	be valid. This may happen when one or more finger is lifted or
+	the gesture is cancelled.
+
+	When a gesture is cancelled, the client should undo state changes
+	caused by this gesture. What causes a gesture to be cancelled is
+	implementation-dependent.
+      </description>
+      <arg name="serial" type="uint"/>
+      <arg name="time" type="uint" summary="timestamp with millisecond granularity"/>
+      <arg name="cancelled" type="int" summary="1 if the gesture was cancelled, 0 otherwise"/>
+    </event>
+  </interface>
+</protocol>

src/x11/group.c

@@ -31,6 +31,7 @@
 #include "group-props.h"
 #include "window-private.h"
 #include <meta/window.h>
+#include <X11/Xlib-xcb.h>
 
 static MetaGroup*
 meta_group_new (MetaDisplay *display,
@@ -50,10 +51,18 @@ meta_group_new (MetaDisplay *display,
   group->group_leader = group_leader;
   group->refcount = 1; /* owned by caller, hash table has only weak ref */
 
-  XWindowAttributes attrs;
-  XGetWindowAttributes (display->xdisplay, group_leader, &attrs);
-  XSelectInput (display->xdisplay, group_leader,
-                attrs.your_event_mask | PropertyChangeMask);
+  xcb_connection_t *xcb_conn = XGetXCBConnection (display->xdisplay);
+  xcb_generic_error_t *e;
+  g_autofree xcb_get_window_attributes_reply_t *attrs =
+    xcb_get_window_attributes_reply (xcb_conn,
+                                     xcb_get_window_attributes (xcb_conn, group_leader),
+                                     &e);
+  if (e)
+    return NULL;
+
+  const uint32_t events[] = { attrs->your_event_mask | XCB_EVENT_MASK_PROPERTY_CHANGE };
+  xcb_change_window_attributes (xcb_conn, group_leader,
+                                XCB_CW_EVENT_MASK, events);
 
   if (display->groups_by_leader == NULL)
     display->groups_by_leader = g_hash_table_new (meta_unsigned_long_hash,
@@ -173,12 +182,14 @@ meta_window_compute_group (MetaWindow* window)
       window->group = group;
     }
 
+  if (!window->group)
+    return;
+
   window->group->windows = g_slist_prepend (window->group->windows, window);
 
   meta_topic (META_DEBUG_GROUPS,
               "Adding %s to group with leader 0x%lx\n",
               window->desc, group->group_leader);
-
 }
 
 static void

src/x11/window-props.c

@@ -810,7 +810,10 @@ reload_net_wm_state (MetaWindow    *window,
       else if (value->v.atom_list.atoms[i] == window->display->atom__NET_WM_STATE_SKIP_PAGER)
         priv->wm_state_skip_pager = TRUE;
       else if (value->v.atom_list.atoms[i] == window->display->atom__NET_WM_STATE_FULLSCREEN)
-        window->fullscreen_after_placement = TRUE;
+        {
+          window->fullscreen = TRUE;
+          g_object_notify (G_OBJECT (window), "fullscreen");
+        }
       else if (value->v.atom_list.atoms[i] == window->display->atom__NET_WM_STATE_ABOVE)
         window->wm_state_above = TRUE;
       else if (value->v.atom_list.atoms[i] == window->display->atom__NET_WM_STATE_BELOW)