css: Improve error reporting for variables

Emit errors for all the variables that were being expanded if an error occurs while parsing a property value at compute time. Include the variables that are being expanded in the error message.
css parser: Keep variables for tokenizers
2024-05-09 23:13:53 -04:00 · 2024-05-09 23:13:53 -04:00 · 2024-05-09 23:13:53 -04:00 · 2024-05-09 23:13:53 -04:00 · 2024-05-09 23:13:53 -04:00 · 2024-05-09 23:13:53 -04:00
365 changed files with 8901 additions and 3766 deletions
@@ -445,9 +445,8 @@ reference:
            --force-fallback-for=gdk-pixbuf,pango
            -Dintrospection=enabled
            -Ddocumentation=true
-            -Dgtk_doc=true
            -Dgdk-pixbuf:gtk_doc=true
-            -Dpango:gtk_doc=true
+            -Dpango:documentation=true
            -Dbuild-demos=false
            -Dbuild-examples=false
            -Dbuild-tests=false
@@ -24,7 +24,7 @@ flatpak build ${builddir} meson \
                -Dbuild-examples=false \
                -Dintrospection=disabled \
                -Dbuild-demos=true \
-                -Ddemo-profile=devel \
+                -Dprofile=devel \
                _flatpak_build

 flatpak build --env=CI_COMMIT_SHORT_SHA=$CI_COMMIT_SHORT_SHA ${builddir} ninja -C _flatpak_build install
@@ -1,15 +1,98 @@
-Overview of Changes in 4.15.0, xx-xx-xxxx
+Overview of Changes in 4.15.1, xx-xx-xxxx
 =========================================

+* GtkGraphicsOffload:
+ - Don't crash without a child
+
+* CSS:
+ - Support the :root selector
+
+* Icontheme:
+ - Make symbolic svg loading more efficient
+ - Handle color-free symbolics more efficiently
+
+* Accessibility:
+ - Make the gtk-demo sidebar search more accessible
+ - Stop emitting focus events
+
+* GDK:
+ - Support XDG_ACTIVATION_TOKEN
+ - dmabuf: Be more defensive when importing unknown formats to GL
+ - dmabuf: Use narrow range for YUV
+
+* GSK:
+ - Improve logging for GDK_DEBUG=offload
+ - Improve logging for GSK_DEBUG=renderer
+ - gpu: Warn about inefficient texture import
+ - gpu: Handle  tiny offscreens correctly
+ - vulkan: Add profiler marks in various places
+ - vulkan: Fix a problem with imported dmabufs showing up black
+
+* Wayland:
+ - Use wl_compositor version 6
+
+* X11:
+ - Implement a missing method
+
+* Build:
+ - Fix many ubsan warnings
+
+* Debugging:
+ - Show more texture details in the recorder
+
+* macOS:
+ - Fix problems with events handed back to the OS
+ - Respect GDK_DEBUG=default-settings
+
+* Translation updates:
+ Korean
+ Turkish
+
+
+Overview of Changes in 4.15.0, 21-04-2024
+=========================================
+
+This release changes the default GSK renderer to be Vulkan, on
+Wayland. Other platforms still use ngl.
+
+The intent of this change is to get wider testing and verify that
+Vulkan drivers are good enough for us to rely on. If significant
+problems show up, we will revert this change for 4.16.
+
+You can still override the renderer choice using the GSK_RENDERER
+environment variable.
+
+---
+
+This release also changes font rendering settings by introducing
+a new high-level gtk-font-rendering settings which gives GTK more
+freedom to decide on font rendering.
+
+You can still use the low-level font-related settings by changing
+the new property to 'manual'.
+
+---
+
+* GtkColumnView:
+ - Fix infinite loops in dispose
+ - Fix problems with weak ref cycles in GtkExpression
+
+* GtkListView:
 * GtkShortcutManager:
 - Track the propagation phase of added controllers

 * GtkGLArea:
 - Produce dmabuf textures, so graphics offload is possible

+* GtkTextView:
+ - Support text shadows
+
 * GtkGraphicsOffload:
 - Add a black-background property

+* Settings:
+ - Add a new gtk-font-rendering setting
+
 * Accessibility:
 - Add support for GetRangeExtents to GtkAccessibleText
 - Add support for GetOffsetAtPoint to GtkAccessibleText
@@ -19,6 +102,7 @@ Overview of Changes in 4.15.0, xx-xx-xxxx
 - Add a callback-based cursor API

 * GSK:
+-  Use the Vulkan renderer by default
 - Avoid an infinite recursion with offscreens in some cases
 - Optimize graphics offload to make it more likely that compositors
   can use direct scanout
@@ -45,13 +129,20 @@ Overview of Changes in 4.15.0, xx-xx-xxxx
 - Require pango 1.52
 - Require cairo 1.18
 - Add a missing dependency that was causing build failures
+ - Drop deprecated build options:
+   gtk_doc -> documentation
+   update_screenshots -> screenshots
+   demo-profile -> profile
+   demos -> build-demos

 * Deprecations:
 - gdk_widget_set/get_font_options
+ - gdk_wayland/x11_display_set_cursor_theme

 * Translation updates:
 Basque
 Brazilian Portuguese
+ British English
 Chinese (China)
 Hebrew
 Kabyle
@@ -186,7 +186,7 @@
            "config-opts" : [
                "--libdir=/app/lib",
                "-Dbuildtype=debugoptimized",
-                "-Ddemo-profile=devel"
+                "-Dprofile=devel"
            ],
            "sources" : [
                {
@@ -115,7 +115,7 @@
            "config-opts" : [
                "--libdir=/app/lib",
                "-Dbuildtype=debugoptimized",
-                "-Ddemo-profile=devel"
+                "-Dprofile=devel"
            ],
            "sources" : [
                {
@@ -115,7 +115,7 @@
            "config-opts" : [
                "--libdir=/app/lib",
                "-Dbuildtype=debugoptimized",
-                "-Ddemo-profile=devel"
+                "-Dprofile=devel"
            ],
            "sources" : [
                {
@@ -115,7 +115,7 @@
            "config-opts" : [
                "--libdir=/app/lib",
                "-Dbuildtype=debugoptimized",
-                "-Ddemo-profile=devel"
+                "-Dprofile=devel"
            ],
            "sources" : [
                {
@@ -363,7 +363,9 @@ insert_markup_idle (gpointer data)

      if (g_get_monotonic_time () - begin > G_TIME_SPAN_MILLISECOND)
        {
-          g_idle_add (insert_markup_idle, data);
+          guint id;
+          id = g_idle_add (insert_markup_idle, data);
+          g_source_set_name_by_id (id, "[gtk-demo] insert_markup_idle");
          return G_SOURCE_REMOVE;
        }

@@ -398,7 +400,9 @@ parse_markup_idle (gpointer data)
  do {
    if (g_get_monotonic_time () - begin > G_TIME_SPAN_MILLISECOND)
      {
-        g_idle_add (parse_markup_idle, data);
+        guint id;
+        id = g_idle_add (parse_markup_idle, data);
+        g_source_set_name_by_id (id, "[gtk-demo] parse_markup_idle");
        return G_SOURCE_REMOVE;
      }

@@ -40,7 +40,7 @@ get_win32_all_locales_scripts (LPWSTR locale_w, DWORD flags, LPARAM param)
 {
  wchar_t *langname_w = NULL;
  wchar_t locale_abbrev_w[9];
-  gchar *langname, *locale_abbrev, *locale, *p;
+  gchar *langname, *locale_abbrev, *locale;
  gint i;
  const LCTYPE iso639_lctypes[] = { LOCALE_SISO639LANGNAME, LOCALE_SISO639LANGNAME2 };
  GHashTable *ht_scripts_langs = (GHashTable *) param;
@@ -59,7 +59,6 @@ get_win32_all_locales_scripts (LPWSTR locale_w, DWORD flags, LPARAM param)
  GetLocaleInfoEx (locale_w, LOCALE_SLOCALIZEDDISPLAYNAME, langname_w, langname_size);
  langname = g_utf16_to_utf8 (langname_w, -1, NULL, NULL, NULL);
  locale = g_utf16_to_utf8 (locale_w, -1, NULL, NULL, NULL);
-  p = strchr (locale, '-');
  lang = pango_language_from_string (locale);
  if (g_hash_table_lookup (ht_scripts_langs, lang) == NULL)
    g_hash_table_insert (ht_scripts_langs, lang, langname);
@@ -20,6 +20,7 @@
 #include "config.h"
 #include <gtk/gtk.h>
 #include <glib/gstdio.h>
+#include <glib/gi18n.h>

 #include "demos.h"
 #include "fontify.h"
@@ -923,6 +924,34 @@ clear_search (GtkSearchBar *bar)
    }
 }

+static void
+search_results_update (GObject    *filter_model,
+                       GParamSpec *pspec,
+                       GtkEntry   *entry)
+{
+  gsize n_items = g_list_model_get_n_items (G_LIST_MODEL (filter_model));
+
+  if (strlen (gtk_editable_get_text (GTK_EDITABLE (entry))) > 0)
+    {
+      char *text;
+
+      if (n_items > 0)
+        text = g_strdup_printf (ngettext ("%ld search result", "%ld search results", n_items), n_items);
+      else
+        text = g_strdup (_("No search results"));
+
+      gtk_accessible_update_property (GTK_ACCESSIBLE (entry),
+                                      GTK_ACCESSIBLE_PROPERTY_DESCRIPTION, text,
+                                      -1);
+
+      g_free (text);
+    }
+  else
+    {
+      gtk_accessible_reset_property (GTK_ACCESSIBLE (entry), GTK_ACCESSIBLE_PROPERTY_DESCRIPTION);
+    }
+}
+
 static void
 activate (GApplication *app)
 {
@@ -970,6 +999,7 @@ activate (GApplication *app)

  search_entry = GTK_WIDGET (gtk_builder_get_object (builder, "search-entry"));
  g_signal_connect (search_entry, "search-changed", G_CALLBACK (demo_search_changed_cb), filter);
+  g_signal_connect (filter_model, "notify::n-items", G_CALLBACK (search_results_update), search_entry);

  selection = gtk_single_selection_new (G_LIST_MODEL (filter_model));
  g_signal_connect (selection, "notify::selected-item", G_CALLBACK (selection_cb), NULL);
@@ -330,6 +330,7 @@ stroke bounds of the path.
 | offset       | `<point>`           | 0 0                 | non-default |
 | hint-style   | `<hint style>`      | slight              | non-default |
 | antialias    | `<antialias>`       | gray                | non-default |
+| hint-metrics | `<hint metrics>`    | off                 | non-default |

 Creates a node like `gsk_text_node_new()` with the given properties.

@@ -346,6 +347,7 @@ font, an error node will be returned.

 Possible values for hint-style are none, slight or full.
 Possible value for antialias are none or gray.
+Possible value for hint-metrics are on or off.

 ### texture

@@ -5,8 +5,11 @@ Title: Cairo interaction
 [Cairo](http://cairographics.org) is a graphics library that supports vector
 graphics and image compositing that can be used with GTK.

-GDK does not wrap the Cairo API; instead it allows to create Cairo
-drawing contexts which can be used to draw on [class@Gdk.Surface]s.
+GDK does not wrap the Cairo API and it is not possible to use cairo directly
+to draw on a [class@Gdk.Surface]. You can either use a
+[GtkDrawingArea](../gtk4/class.DrawingArea.html) widget or
+[gtk_snapshot_append_cairo](../gtk4/func.Snapshot.append_cairo.html)
+for drawing with cairo in a GTK4 application.

 Additional functions allow use [struct@Gdk.Rectangle]s with Cairo
 and to use [struct@Gdk.RGBA], `GdkPixbuf`, and [class@Gdk.Surface]
@@ -74,6 +74,7 @@ in a selector, widget names must be prefixed with a &num; character.
 | E:not(selector) | [CSS Selector Level 3](https://www.w3.org/TR/css3-selectors/#negation) | |
 | E:dir(ltr), E:dir(rtl) | [CSS Selector Level 4](https://drafts.csswg.org/selectors/#the-dir-pseudo) | |
 | E:drop(active) | [CSS Selector Level 4](https://drafts.csswg.org/selectors/#drag-pseudos) | |
+| E:root | [CSS Selector Level 3](https://www.w3.org/TR/selectors-3/#root-pseudo) | |
 | E F | [CSS Selector Level 3](https://www.w3.org/TR/css3-selectors/#descendent-combinators) | |
 | E > F | [CSS Selector Level 3](https://www.w3.org/TR/css3-selectors/#child-combinators) | |
 | E ~ F | [CSS Selector Level 3](https://www.w3.org/TR/css3-selectors/#general-sibling-combinators) | |
@@ -56,6 +56,30 @@ follows:
 1 value:
 : all

+## Custom Properties
+
+GTK supports custom properties as defined in the
+[CSS Custom Properties for Cascading Variables](https://www.w3.org/TR/css-variables-1)
+spec.
+
+Custom properties are defined as follows:
+
+```css
+--prop: red;
+```
+
+and used via the `var` keyword:
+
+```css
+color: var(--prop);
+```
+
+Custom properties can have a fallback for when the referred property is invalid:
+
+```css
+color: var(--prop, green);
+```
+
 ## Colors

 GTK extends the CSS syntax with several additional ways to specify colors.
@@ -8,6 +8,10 @@ gtk4-broadwayd
 The Broadway display server
 ---------------------------

+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------
 |   **gtk4-broadwayd** [OPTIONS...] <DISPLAY>
@@ -8,6 +8,10 @@ gtk4-builder-tool
 GtkBuilder File Utility
 -----------------------

+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------
 |   **gtk4-builder-tool** <COMMAND> [OPTIONS...] <FILE>
@@ -8,6 +8,9 @@ gtk4-demo-application
 Demonstrate GtkApplication
 --------------------------

+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands

 SYNOPSIS
 --------
@@ -8,6 +8,10 @@ gtk4-demo
 Demonstrate GTK widgets
 -----------------------

+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------

@@ -8,6 +8,10 @@ gtk4-encode-symbolic-svg
 Symbolic icon conversion utility
 --------------------------------

+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------

@@ -8,6 +8,10 @@ gtk4-icon-browser
 List themed icons
 -----------------

+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------

@@ -8,6 +8,10 @@ gtk4-launch
 Launch an application
 ---------------------

+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------

@@ -8,6 +8,10 @@ gtk4-node-editor
 Editor render nodes
 -----------------

+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------

@@ -8,6 +8,10 @@ gtk4-path-tool
 GskPath Utility
 -----------------------

+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------
 |   **gtk4-path-tool** <COMMAND> [OPTIONS...] <PATH>
@@ -8,6 +8,10 @@ gtk4-query-settings
 Print name and value of GTK settings
 ------------------------------------

+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------

@@ -8,6 +8,10 @@ gtk4-rendernode-tool
 GskRenderNode Utility
 -----------------------

+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------
 |   **gtk4-rendernode-tool** <COMMAND> [OPTIONS...] <FILE>
@@ -45,13 +49,14 @@ without any titlebar.
 Rendering
 ^^^^^^^^^

-The ``render`` command saves a rendering of the rendernode as a png or tiff image.
-The name of the file to write can be specified as a second FILE argument.
+The ``render`` command saves a rendering of the rendernode as a png, tiff or svg
+image or as pdf document. The name of the file to write can be specified as a second
+FILE argument.

 ``--renderer=RENDERER``

  Use the given renderer. Use ``--renderer=help`` to get a information
-  about poassible values for the ``RENDERER``.
+  about possible values for the ``RENDERER``.

 Benchmark
 ^^^^^^^^^
@@ -93,4 +98,4 @@ exit code is 1. If the images are identical, it is 0.

 ``--quiet``

-  Don't write results to stdout.`
+  Don't write results to stdout.
@@ -8,6 +8,10 @@ gtk4-update-icon-cache
 Icon theme caching utility
 --------------------------

+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------

@@ -8,6 +8,10 @@ gtk4-widget-factory
 Showcase GTK widgets and styles
 -------------------------------

+:Version: GTK
+:Manual section: 1
+:Manual group: GTK commands
+
 SYNOPSIS
 --------

@@ -80,7 +80,7 @@ if get_option('man-pages') and rst2man.found()
    [ 'gtk4-path-tool', '1', ],
  ]

-  if get_option('demos')
+  if get_option('build-demos')
    rst_files += [
      [ 'gtk4-demo', '1', ],
      [ 'gtk4-demo-application', '1', ],
@@ -155,6 +155,7 @@ Each property name is part of the `GtkAccessibleProperty` enumeration.
 | %GTK_ACCESSIBLE_PROPERTY_VALUE_MIN | “aria-valuemin” | double |
 | %GTK_ACCESSIBLE_PROPERTY_VALUE_NOW | “aria-valuenow” | double |
 | %GTK_ACCESSIBLE_PROPERTY_VALUE_TEXT | “aria-valuetext” | translatable string |
+| %GTK_ACCESSIBLE_PROPERTY_HELP_TEXT | N/A | translatable string |

 #### List of accessible relations

@@ -216,6 +217,10 @@ are accessible as part of the development process. The GTK Inspector shows
 the accessible attributes of each widget, and also provides an overlay that
 can highlight accessibility issues.

+If you support some non-standard keyboard interactions for a widget, you
+**should** set an appropriate `GTK_ACCESSIBLE_PROPERTY_HELP_TEXT` to help
+discoverability of the behavior.
+
 It is possible to set accessible attributes in UI files as well:
 ```xml
 <object class="GtkButton" id="button1">
@@ -143,31 +143,50 @@ static const GdkDebugKey gdk_debug_keys[] = {

 #ifdef G_HAS_CONSTRUCTORS
 #ifdef G_DEFINE_CONSTRUCTOR_NEEDS_PRAGMA
-#pragma G_DEFINE_CONSTRUCTOR_PRAGMA_ARGS(stash_desktop_startup_notification_id)
+#pragma G_DEFINE_CONSTRUCTOR_PRAGMA_ARGS(stash_and_unset_environment)
 #endif
-G_DEFINE_CONSTRUCTOR(stash_desktop_startup_notification_id)
+G_DEFINE_CONSTRUCTOR(stash_and_unset_environment)
 #endif

 static char *startup_notification_id = NULL;
+static char *xdg_activation_token = NULL;

 static void
-stash_desktop_startup_notification_id (void)
+stash_and_unset_environment (void)
 {
-  const char *desktop_startup_id;
-
-  desktop_startup_id = g_getenv ("DESKTOP_STARTUP_ID");
-  if (desktop_startup_id && *desktop_startup_id != '\0')
-    {
-      if (!g_utf8_validate (desktop_startup_id, -1, NULL))
-        g_warning ("DESKTOP_STARTUP_ID contains invalid UTF-8");
-      else
-        startup_notification_id = g_strdup (desktop_startup_id);
-    }
-
-  /* Clear the environment variable so it won't be inherited by
+  /* Copies environment variables and unsets them so they won't be inherited by
   * child processes and confuse things.
+   *
+   * Changing environment variables can be racy so we try to do this as early as
+   * possible in the program flow and before any printing that might involve
+   * environment variables.
   */
-  g_unsetenv ("DESKTOP_STARTUP_ID");
+  struct {
+    const char *key;
+    char **dst;
+  } vars[] = {
+    { "DESKTOP_STARTUP_ID", &startup_notification_id },
+    { "XDG_ACTIVATION_TOKEN", &xdg_activation_token },
+  };
+  size_t i;
+
+  for (i = 0; i < G_N_ELEMENTS (vars); i++)
+    *vars[i].dst = g_strdup (g_getenv (vars[i].key));
+
+  for (i = 0; i < G_N_ELEMENTS (vars); i++)
+    g_unsetenv (vars[i].key);
+
+  for (i = 0; i < G_N_ELEMENTS (vars); i++)
+    {
+      if (*vars[i].dst == NULL)
+        continue;
+
+      if (!g_utf8_validate (*vars[i].dst, -1, NULL))
+        {
+          g_warning ("%s contains invalid UTF-8", vars[i].key);
+          g_clear_pointer (vars[i].dst, g_free);
+        }
+    }
 }

 static gpointer
@@ -292,7 +311,7 @@ gdk_pre_parse (void)
    gdk_gl_backend_use (GDK_GL_WGL);

 #ifndef G_HAS_CONSTRUCTORS
-  stash_desktop_startup_notification_id ();
+  stash_and_unset_environment ();
 #endif
 }

@@ -326,15 +345,20 @@ gdk_display_open_default (void)
 /*< private >
 * gdk_get_startup_notification_id:
 *
- * Returns the original value of the DESKTOP_STARTUP_ID environment
- * variable if it was defined and valid, or %NULL otherwise.
+ * Returns the original value of the XDG_ACTIVATION_TOKEN environment
+ * variable if it was defined and valid, otherwise it returns the original
+ * value of the DESKTOP_STARTUP_ID environment variable if it was defined
+ * and valid, or %NULL if neither of them were defined and valid.
 *
 * Returns: (nullable) (transfer none): the original value of the
- *   DESKTOP_STARTUP_ID environment variable
+ *   XDG_ACTIVATION_TOKEN or DESKTOP_STARTUP_ID environment variable
 */
 const char *
 gdk_get_startup_notification_id (void)
 {
+  if (xdg_activation_token)
+    return xdg_activation_token;
+
  return startup_notification_id;
 }

@@ -144,8 +144,8 @@ struct _YUVCoefficients
 };

 /* multiplied by 65536 */
-//static const YUVCoefficients itu601_narrow = { 104597, -25675, -53279, 132201 };
-static const YUVCoefficients itu601_wide = { 74711, -25864, -38050, 133176 };
+static const YUVCoefficients itu601_narrow = { 104597, -25675, -53279, 132201 };
+//static const YUVCoefficients itu601_wide = { 74711, -25864, -38050, 133176 };

 static inline void
 get_uv_values (const YUVCoefficients *coeffs,
@@ -229,7 +229,7 @@ download_nv12 (guchar          *dst_data,
          int r, g, b;
          gsize xs, ys;

-          get_uv_values (&itu601_wide, uv_data[x / X_SUB * 2 + U], uv_data[x / X_SUB * 2 + V], &r, &g, &b);
+          get_uv_values (&itu601_narrow, uv_data[x / X_SUB * 2 + U], uv_data[x / X_SUB * 2 + V], &r, &g, &b);

          for (ys = 0; ys < Y_SUB && y + ys < height; ys++)
            for (xs = 0; xs < X_SUB && x + xs < width; xs++)
@@ -309,7 +309,7 @@ download_yuv_3 (guchar          *dst_data,
          int r, g, b;
          gsize xs, ys;

-          get_uv_values (&itu601_wide, u_data[x / X_SUB], v_data[x / X_SUB], &r, &g, &b);
+          get_uv_values (&itu601_narrow, u_data[x / X_SUB], v_data[x / X_SUB], &r, &g, &b);

          for (ys = 0; ys < Y_SUB && y + ys < height; ys++)
            for (xs = 0; xs < X_SUB && x + xs < width; xs++)
@@ -365,7 +365,7 @@ download_yuyv (guchar          *dst_data,
        {
          int r, g, b;

-          get_uv_values (&itu601_wide, src_data[2 * x + U], src_data[2 * x + V], &r, &g, &b);
+          get_uv_values (&itu601_narrow, src_data[2 * x + U], src_data[2 * x + V], &r, &g, &b);
          set_rgb_values (&dst_data[3 * x], src_data[2 * x + Y1], r, g, b);
          if (x + 1 < width)
            set_rgb_values (&dst_data[3 * (x + 1)], src_data[2 * x + Y2], r, g, b);
@@ -163,6 +163,8 @@ gdk_dmabuf_get_egl_downloader (GdkDisplay              *display,
    return NULL;

  previous = gdk_gl_context_get_current ();
+  if (previous)
+    g_object_ref (previous);
  formats = gdk_dmabuf_formats_builder_new ();
  external = gdk_dmabuf_formats_builder_new ();

@@ -194,7 +196,10 @@ gdk_dmabuf_get_egl_downloader (GdkDisplay              *display,
    }

  if (previous)
-    gdk_gl_context_make_current (previous);
+    {
+      gdk_gl_context_make_current (previous);
+      g_object_unref (previous);
+    }

  return GDK_DMABUF_DOWNLOADER (renderer);
 }
@@ -239,7 +244,7 @@ gdk_dmabuf_egl_create_image (GdkDisplay      *display,
  attribs[i++] = EGL_YUV_COLOR_SPACE_HINT_EXT;
  attribs[i++] = EGL_ITU_REC601_EXT;
  attribs[i++] = EGL_SAMPLE_RANGE_HINT_EXT;
-  attribs[i++] = EGL_YUV_FULL_RANGE_EXT;
+  attribs[i++] = EGL_YUV_NARROW_RANGE_EXT;

 #define ADD_PLANE(plane) \
  { \
@@ -265,6 +270,7 @@ gdk_dmabuf_egl_create_image (GdkDisplay      *display,
  if (dmabuf->n_planes > 3) ADD_PLANE (3);

  attribs[i++] = EGL_NONE;
+  g_assert (i < G_N_ELEMENTS (attribs));

  image = eglCreateImageKHR (egl_display,
                             EGL_NO_CONTEXT,
@@ -192,13 +192,6 @@ compute_smooth_frame_time (GdkFrameClock *clock,
   *        and new_frame_time >= old_frame_time. */
  frames_passed = (new_frame_time - smoothed_frame_time_base + frame_interval / 2) / frame_interval;

-  if (frames_passed > 1)
-    gdk_profiler_add_markf ((smoothed_frame_time_base - (frame_interval * (frames_passed-1))) * 1000L,
-                            frame_interval * (frames_passed-1) * 1000L,
-                            "Dropped Frames",
-                            "%u frames may have been dropped",
-                            frames_passed-1);
-
  /* We use an approximately whole number of frames in the future from
   * last smoothed frame time. This way we avoid minor jitter in the
   * frame times making the animation speed uneven, but still animate
@@ -1956,8 +1956,6 @@ gdk_gl_context_get_glsl_version_string (GdkGLContext *self)
        return "#version 310 es";
      else if (gdk_gl_version_greater_equal (&priv->gl_version, &GDK_GL_VERSION_INIT (3, 0)))
        return "#version 300 es";
-      else if (gdk_gl_version_greater_equal (&priv->gl_version, &GDK_GL_VERSION_INIT (3, 0)))
-        return "#version 300 es";
      else
        return "#version 100";
    }
@@ -2198,12 +2196,78 @@ gdk_gl_context_import_dmabuf (GdkGLContext    *self,

  gdk_display_init_dmabuf (display);

-  if (!gdk_dmabuf_formats_contains (display->egl_external_formats, dmabuf->fourcc, dmabuf->modifier))
+  if (gdk_dmabuf_formats_contains (display->egl_dmabuf_formats, dmabuf->fourcc, dmabuf->modifier))
    {
+      /* This is the path for modern drivers that support modifiers */
+
+      if (!gdk_dmabuf_formats_contains (display->egl_external_formats, dmabuf->fourcc, dmabuf->modifier))
+        {
+          texture_id = gdk_gl_context_import_dmabuf_for_target (self,
+                                                                width, height,
+                                                                dmabuf,
+                                                                GL_TEXTURE_2D);
+          if (texture_id == 0)
+            {
+              GDK_DISPLAY_DEBUG (display, DMABUF,
+                                 "Import of %dx%d %.4s:%#" G_GINT64_MODIFIER "x dmabuf failed",
+                                 width, height,
+                                 (char *) &dmabuf->fourcc, dmabuf->modifier);
+              return 0;
+            }
+
+          GDK_DISPLAY_DEBUG (display, DMABUF,
+                             "Imported %dx%d %.4s:%#" G_GINT64_MODIFIER "x dmabuf as GL_TEXTURE_2D texture",
+                             width, height,
+                             (char *) &dmabuf->fourcc, dmabuf->modifier);
+          *external = FALSE;
+          return texture_id;
+        }
+
+      if (!gdk_gl_context_get_use_es (self))
+        {
+          GDK_DISPLAY_DEBUG (display, DMABUF,
+                             "Can't import external_only %.4s:%#" G_GINT64_MODIFIER "x outside of GLES",
+                             (char *) &dmabuf->fourcc, dmabuf->modifier);
+          return 0;
+        }
+
      texture_id = gdk_gl_context_import_dmabuf_for_target (self,
                                                            width, height,
                                                            dmabuf,
-                                                            GL_TEXTURE_2D);
+                                                            GL_TEXTURE_EXTERNAL_OES);
+      if (texture_id == 0)
+        {
+          GDK_DISPLAY_DEBUG (display, DMABUF,
+                             "Import of external_only %dx%d %.4s:%#" G_GINT64_MODIFIER "x dmabuf failed",
+                             width, height,
+                             (char *) &dmabuf->fourcc, dmabuf->modifier);
+          return 0;
+        }
+
+      GDK_DISPLAY_DEBUG (display, DMABUF,
+                         "Imported %dx%d %.4s:%#" G_GINT64_MODIFIER "x dmabuf as GL_TEXTURE_EXTERNAL_OES texture",
+                         width, height,
+                         (char *) &dmabuf->fourcc, dmabuf->modifier);
+      *external = TRUE;
+      return texture_id;
+    }
+  else
+    {
+      /* This is the opportunistic path.
+       * We hit it both for drivers that do not support modifiers as well as for dmabufs
+       * that the driver did not explicitly advertise. */
+      int target;
+
+      if (gdk_gl_context_get_use_es (self))
+        target = GL_TEXTURE_EXTERNAL_OES;
+      else
+        target = GL_TEXTURE_2D;
+
+      texture_id = gdk_gl_context_import_dmabuf_for_target (self,
+                                                            width, height,
+                                                            dmabuf,
+                                                            target);
+
      if (texture_id == 0)
        {
          GDK_DISPLAY_DEBUG (display, DMABUF,
@@ -2214,40 +2278,13 @@ gdk_gl_context_import_dmabuf (GdkGLContext    *self,
        }

      GDK_DISPLAY_DEBUG (display, DMABUF,
-                         "Imported %dx%d %.4s:%#" G_GINT64_MODIFIER "x dmabuf as GL_TEXTURE_2D texture",
+                         "Imported %dx%d %.4s:%#" G_GINT64_MODIFIER "x dmabuf as %s texture",
                         width, height,
-                         (char *) &dmabuf->fourcc, dmabuf->modifier);
-      *external = FALSE;
+                         (char *) &dmabuf->fourcc, dmabuf->modifier,
+                         target == GL_TEXTURE_EXTERNAL_OES ? "GL_TEXTURE_EXTERNAL_OES" : "GL_TEXTURE_2D");
+      *external = target == GL_TEXTURE_EXTERNAL_OES;
      return texture_id;
    }
-
-  if (!gdk_gl_context_get_use_es (self))
-    {
-      GDK_DISPLAY_DEBUG (display, DMABUF,
-                         "Can't import external_only %.4s:%#" G_GINT64_MODIFIER "x outside of GLES",
-                         (char *) &dmabuf->fourcc, dmabuf->modifier);
-      return 0;
-    }
-
-  texture_id = gdk_gl_context_import_dmabuf_for_target (self,
-                                                        width, height,
-                                                        dmabuf,
-                                                        GL_TEXTURE_EXTERNAL_OES);
-  if (texture_id == 0)
-    {
-      GDK_DISPLAY_DEBUG (display, DMABUF,
-                         "Import of external_only %dx%d %.4s:%#" G_GINT64_MODIFIER "x dmabuf failed",
-                         width, height,
-                         (char *) &dmabuf->fourcc, dmabuf->modifier);
-      return 0;
-    }
-
-  GDK_DISPLAY_DEBUG (display, DMABUF,
-                     "Imported %dx%d %.4s:%#" G_GINT64_MODIFIER "x dmabuf as GL_TEXTURE_EXTERNAL_OES texture",
-                     width, height,
-                     (char *) &dmabuf->fourcc, dmabuf->modifier);
-  *external = TRUE;
-  return texture_id;
 }

 gboolean
@@ -563,7 +563,7 @@ gdk_texture_new_from_bytes_internal (GBytes  *bytes,
 {
  if (gdk_is_png (bytes))
    {
-      return gdk_load_png (bytes, error);
+      return gdk_load_png (bytes, NULL, error);
    }
  else if (gdk_is_jpeg (bytes))
    {
@@ -29,6 +29,7 @@
 #include "gdkdmabuffourccprivate.h"
 #include "gdkdmabuftextureprivate.h"
 #include "gdkdisplayprivate.h"
+#include "gdkprofilerprivate.h"
 #include <glib/gi18n-lib.h>
 #include <math.h>

@@ -631,6 +632,7 @@ gdk_vulkan_context_begin_frame (GdkDrawContext *draw_context,
 {
  GdkVulkanContext *context = GDK_VULKAN_CONTEXT (draw_context);
  GdkVulkanContextPrivate *priv = gdk_vulkan_context_get_instance_private (context);
+  VkResult acquire_result;
  guint i;

  if (depth != priv->current_format)
@@ -652,12 +654,29 @@ gdk_vulkan_context_begin_frame (GdkDrawContext *draw_context,
      cairo_region_union (priv->regions[i], region);
    }

-  GDK_VK_CHECK (vkAcquireNextImageKHR, gdk_vulkan_context_get_device (context),
-                                       priv->swapchain,
-                                       UINT64_MAX,
-                                       priv->draw_semaphore,
-                                       VK_NULL_HANDLE,
-                                       &priv->draw_index);
+acquire_next_image:
+  acquire_result = GDK_VK_CHECK (vkAcquireNextImageKHR, gdk_vulkan_context_get_device (context),
+                                                        priv->swapchain,
+                                                        UINT64_MAX,
+                                                        priv->draw_semaphore,
+                                                        VK_NULL_HANDLE,
+                                                        &priv->draw_index);
+  if ((acquire_result == VK_ERROR_OUT_OF_DATE_KHR) ||
+      (acquire_result == VK_SUBOPTIMAL_KHR))
+    {
+      GError *error = NULL;
+
+      GDK_DEBUG (VULKAN, "Recreating the swapchain");
+
+      if (!gdk_vulkan_context_check_swapchain (context, &error))
+        {
+          g_warning ("%s", error->message);
+          g_error_free (error);
+          return;
+        }
+
+       goto acquire_next_image;
+     }

  cairo_region_union (region, priv->regions[priv->draw_index]);
 }
@@ -1110,6 +1129,7 @@ gdk_display_load_pipeline_cache (GdkDisplay *display)
 static gboolean
 gdk_vulkan_save_pipeline_cache (GdkDisplay *display)
 {
+  G_GNUC_UNUSED gint64 begin_time = GDK_PROFILER_CURRENT_TIME;
  GError *error = NULL;
  VkDevice device;
  VkPipelineCache cache;
@@ -1124,14 +1144,13 @@ gdk_vulkan_save_pipeline_cache (GdkDisplay *display)
  GDK_VK_CHECK (vkGetPipelineCacheData, device, cache, &size, NULL);
  if (size == 0)
    return TRUE;
-  
+
  if (size == display->vk_pipeline_cache_size)
    {
      GDK_DEBUG (VULKAN, "pipeline cache size (%zu bytes) unchanged, skipping save", size);
      return TRUE;
    }

-
  data = g_malloc (size);
  if (GDK_VK_CHECK (vkGetPipelineCacheData, device, cache, &size, data) != VK_SUCCESS)
    {
@@ -1151,7 +1170,7 @@ gdk_vulkan_save_pipeline_cache (GdkDisplay *display)

  file = gdk_vulkan_get_pipeline_cache_file (display);

-  GDK_DEBUG (VULKAN, "Saving pipeline cache to %s", g_file_peek_path (file));
+  GDK_DEBUG (VULKAN, "Saving pipeline cache of size %lu to %s", size, g_file_peek_path (file));

  if (!g_file_replace_contents (file,
                                data,
@@ -1166,7 +1185,7 @@ gdk_vulkan_save_pipeline_cache (GdkDisplay *display)
      if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_WRONG_ETAG))
        {
          VkPipelineCache new_cache;
-          
+
          GDK_DEBUG (VULKAN, "Pipeline cache file modified, merging into current");
          new_cache = gdk_display_load_pipeline_cache (display);
          if (new_cache)
@@ -1193,10 +1212,15 @@ gdk_vulkan_save_pipeline_cache (GdkDisplay *display)
      return FALSE;
    }

+  gdk_profiler_end_markf (begin_time,
+                          "Save Vulkan pipeline cache", "%s size %lu",
+                          g_file_peek_path (file), size);
+
  g_object_unref (file);
  g_free (data);
  g_free (display->vk_pipeline_cache_etag);
  display->vk_pipeline_cache_etag = etag;
+  display->vk_pipeline_cache_size = size;

  return TRUE;
 }
@@ -1236,6 +1260,11 @@ gdk_display_create_pipeline_cache (GdkDisplay *display)
                                           },
                                           NULL,
                                           &display->vk_pipeline_cache);
+      GDK_DEBUG (VULKAN, "Creating empty pipeline cache");
+    }
+  else
+    {
+      GDK_DEBUG (VULKAN, "Loading pipeline cache (%lu bytes)", display->vk_pipeline_cache_size);
    }
 }

@@ -1345,6 +1374,7 @@ static gboolean
 gdk_display_create_vulkan_device (GdkDisplay  *display,
                                  GError     **error)
 {
+  G_GNUC_UNUSED gint64 start_time = GDK_PROFILER_CURRENT_TIME;
  uint32_t i, j, k;
  const char *override;
  gboolean list_devices;
@@ -1553,6 +1583,8 @@ gdk_display_create_vulkan_device (GdkDisplay  *display,
                                       "Hum, what? This should not happen.")));
                }

+              gdk_profiler_end_mark (start_time, "Create Vulkan device", NULL);
+
              return TRUE;
            }
        }
@@ -1591,6 +1623,7 @@ static gboolean
 gdk_display_create_vulkan_instance (GdkDisplay  *display,
                                    GError     **error)
 {
+  G_GNUC_UNUSED gint64 start_time = GDK_PROFILER_CURRENT_TIME;
  uint32_t i;
  GPtrArray *used_extensions;
  GPtrArray *used_layers;
@@ -1752,6 +1785,8 @@ gdk_display_create_vulkan_instance (GdkDisplay  *display,

  display->vk_shader_modules = g_hash_table_new (g_str_hash, g_str_equal);

+  gdk_profiler_end_mark (start_time, "Create Vulkan instance", NULL);
+
  return TRUE;
 }

@@ -127,15 +127,18 @@ png_simple_warning_callback (png_structp     png,
 }

 /* }}} */
-/* {{{ Public API */ 
+/* {{{ Public API */

 GdkTexture *
-gdk_load_png (GBytes  *bytes,
-              GError **error)
+gdk_load_png (GBytes      *bytes,
+              GHashTable  *options,
+              GError     **error)
 {
  png_io io;
  png_struct *png = NULL;
  png_info *info;
+  png_textp text;
+  int num_texts;
  guint width, height;
  gsize i, stride;
  int depth, color_type;
@@ -297,6 +300,17 @@ gdk_load_png (GBytes  *bytes,
  texture = gdk_memory_texture_new (width, height, format, out_bytes, stride);
  g_bytes_unref (out_bytes);

+  if (options && png_get_text (png, info, &text, &num_texts))
+    {
+      for (i = 0; i < num_texts; i++)
+        {
+          if (text->compression != -1)
+            continue;
+
+          g_hash_table_insert (options, g_strdup (text->key), g_strdup (text->text));
+        }
+    }
+
  g_free (row_pointers);
  png_destroy_read_struct (&png, &info, NULL);

@@ -23,6 +23,7 @@
 #define PNG_SIGNATURE "\x89PNG"

 GdkTexture *gdk_load_png        (GBytes         *bytes,
+                                 GHashTable     *options,
                                 GError        **error);

 GBytes     *gdk_save_png        (GdkTexture     *texture);
@@ -161,7 +161,8 @@ void             _gdk_macos_display_send_event                     (GdkMacosDisp
 void             _gdk_macos_display_warp_pointer                   (GdkMacosDisplay *self,
                                                                    int              x,
                                                                    int              y);
-NSEvent         *_gdk_macos_display_get_nsevent                    (GdkEvent        *event);
+NSEvent         *_gdk_macos_display_get_matching_nsevent           (GdkEvent        *event);
+NSEvent         *_gdk_macos_display_get_exact_nsevent              (GdkEvent        *event);
 NSEvent         *_gdk_macos_display_get_last_nsevent               (void);
 GdkDrag         *_gdk_macos_display_find_drag                      (GdkMacosDisplay *self,
                                                                    NSInteger        sequence_number);
@@ -77,6 +77,9 @@ gdk_macos_display_get_setting (GdkDisplay  *display,
                               const char *setting,
                               GValue      *value)
 {
+  if (gdk_display_get_debug_flags (display) & GDK_DEBUG_DEFAULT_SETTINGS)
+    return FALSE;
+
  return _gdk_macos_display_get_setting (GDK_MACOS_DISPLAY (display), setting, value);
 }

@@ -991,17 +994,41 @@ _gdk_macos_display_warp_pointer (GdkMacosDisplay *self,
  CGWarpMouseCursorPosition ((CGPoint) { x, y });
 }

+/* Find the matching `NSEvent` for an `GdkEvent`. This function
+ * return the `NSEvent`, also for rewritten `GdkEvent`'s.
+ */
 NSEvent *
-_gdk_macos_display_get_nsevent (GdkEvent *event)
+_gdk_macos_display_get_matching_nsevent (GdkEvent *event)
 {
-  for (const GList *iter = event_map.head; iter; iter = iter->next)
+  for (GList *iter = event_map.head; iter; iter = iter->next)
    {
-      const GdkToNSEventMap *map = iter->data;
+      GdkToNSEventMap *map = iter->data;

      if (map->gdk_event->event_type == event->event_type &&
          map->gdk_event->device == event->device &&
          map->gdk_event->time == event->time)
-        return map->nsevent;
+        {
+          return map->nsevent;
+        }
+    }
+
+  return NULL;
+}
+
+/* Find the matching `NSEvent` for the original `GdkEvent`.
+ * If an event was rewritten, it returns `NULL`.
+ */
+NSEvent *
+_gdk_macos_display_get_exact_nsevent (GdkEvent *event)
+{
+  for (GList *iter = event_map.head; iter; iter = iter->next)
+    {
+      GdkToNSEventMap *map = iter->data;
+
+      if (map->gdk_event == event)
+        {
+          return map->nsevent;
+        }
    }

  return NULL;
@@ -738,7 +738,7 @@ gdk_macos_event_source_dispatch (GSource     *source,

      if (!handled)
        {
-          NSEvent *nsevent = _gdk_macos_display_get_nsevent (event);
+          NSEvent *nsevent = _gdk_macos_display_get_exact_nsevent (event);
          if (nsevent != NULL)
            [NSApp sendEvent: nsevent];
        }
@@ -105,6 +105,9 @@
 #endif

 static void _gdk_wayland_display_load_cursor_theme (GdkWaylandDisplay *display_wayland);
+static void _gdk_wayland_display_set_cursor_theme  (GdkDisplay        *display,
+                                                    const char        *name,
+                                                    int                size);

 G_DEFINE_TYPE (GdkWaylandDisplay, gdk_wayland_display, GDK_TYPE_DISPLAY)

@@ -284,93 +287,6 @@ static const struct wl_shm_listener wl_shm_listener = {
  wl_shm_format
 };

-static void
-linux_dmabuf_done (void *data,
-                   struct zwp_linux_dmabuf_feedback_v1 *zwp_linux_dmabuf_feedback_v1)
-{
-  GDK_DEBUG (MISC, "dmabuf feedback done");
-}
-
-static void
-linux_dmabuf_format_table (void *data,
-                           struct zwp_linux_dmabuf_feedback_v1 *zwp_linux_dmabuf_feedback_v1,
-                           int32_t fd,
-                           uint32_t size)
-{
-  GdkWaylandDisplay *display_wayland = data;
-
-  display_wayland->linux_dmabuf_n_formats = size / 16;
-  display_wayland->linux_dmabuf_formats = mmap (NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
-
-  GDK_DEBUG (MISC, "got dmabuf format table (%lu entries)", display_wayland->linux_dmabuf_n_formats);
-}
-
-static void
-linux_dmabuf_main_device (void *data,
-                          struct zwp_linux_dmabuf_feedback_v1 *zwp_linux_dmabuf_feedback_v1,
-                          struct wl_array *device)
-{
-  dev_t dev G_GNUC_UNUSED = *(dev_t *)device->data;
-
-  GDK_DEBUG (MISC, "got dmabuf main device: %u %u", major (dev), minor (dev));
-}
-
-static void
-linux_dmabuf_tranche_done (void *data,
-                           struct zwp_linux_dmabuf_feedback_v1 *zwp_linux_dmabuf_feedback_v1)
-{
-  GDK_DEBUG (MISC, "dmabuf feedback tranche done");
-}
-
-static void
-linux_dmabuf_tranche_target_device (void *data,
-                                    struct zwp_linux_dmabuf_feedback_v1 *zwp_linux_dmabuf_feedback_v1,
-                                    struct wl_array *device)
-{
-  dev_t dev G_GNUC_UNUSED = *(dev_t *)device->data;
-
-  GDK_DEBUG (MISC, "got dmabuf tranche target device: %u %u", major (dev), minor (dev));
-}
-
-static void
-linux_dmabuf_tranche_formats (void *data,
-                              struct zwp_linux_dmabuf_feedback_v1 *zwp_linux_dmabuf_feedback_v1,
-                              struct wl_array *indices)
-{
-  GdkWaylandDisplay *display_wayland = data;
-
-  GDK_DEBUG (MISC, "got dmabuf tranche formats (%lu entries):", indices->size / sizeof (guint16));
-  guint16 *pos;
-
-  wl_array_for_each (pos, indices)
-    {
-      LinuxDmabufFormat *fmt G_GNUC_UNUSED = &display_wayland->linux_dmabuf_formats[*pos];
-      uint32_t f G_GNUC_UNUSED = fmt->fourcc;
-      uint64_t m G_GNUC_UNUSED = fmt->modifier;
-      GDK_DEBUG (MISC, "  %.4s:%#" G_GINT64_MODIFIER "x", (char *) &f, m);
-    }
-}
-
-static void
-linux_dmabuf_tranche_flags (void *data,
-                            struct zwp_linux_dmabuf_feedback_v1 *zwp_linux_dmabuf_feedback_v1,
-                            uint32_t flags)
-{
-  GDK_DEBUG (MISC,
-             "got dmabuf tranche flags: %s",
-             flags & ZWP_LINUX_DMABUF_FEEDBACK_V1_TRANCHE_FLAGS_SCANOUT ? "scanout" : "");
-}
-
-static const struct zwp_linux_dmabuf_feedback_v1_listener linux_dmabuf_feedback_listener = {
-  linux_dmabuf_done,
-  linux_dmabuf_format_table,
-  linux_dmabuf_main_device,
-  linux_dmabuf_tranche_done,
-  linux_dmabuf_tranche_target_device,
-  linux_dmabuf_tranche_formats,
-  linux_dmabuf_tranche_flags,
-};
-
 static void
 server_decoration_manager_default_mode (void                                          *data,
                                        struct org_kde_kwin_server_decoration_manager *manager,
@@ -437,7 +353,7 @@ gdk_registry_handle_global (void               *data,
    {
      display_wayland->compositor =
        wl_registry_bind (display_wayland->wl_registry, id,
-                          &wl_compositor_interface, MIN (version, 5));
+                          &wl_compositor_interface, MIN (version, 6));
    }
  else if (strcmp (interface, "wl_shm") == 0)
    {
@@ -447,12 +363,14 @@ gdk_registry_handle_global (void               *data,
    }
  else if (strcmp (interface, "zwp_linux_dmabuf_v1") == 0 && version >= 4)
    {
+      struct zwp_linux_dmabuf_feedback_v1 *feedback;
+
      display_wayland->linux_dmabuf =
        wl_registry_bind (display_wayland->wl_registry, id, &zwp_linux_dmabuf_v1_interface, version);
-      display_wayland->linux_dmabuf_feedback =
-        zwp_linux_dmabuf_v1_get_default_feedback (display_wayland->linux_dmabuf);
-     zwp_linux_dmabuf_feedback_v1_add_listener (display_wayland->linux_dmabuf_feedback,
-                                                &linux_dmabuf_feedback_listener, display_wayland);
+      feedback = zwp_linux_dmabuf_v1_get_default_feedback (display_wayland->linux_dmabuf);
+      display_wayland->dmabuf_formats_info = dmabuf_formats_info_new (GDK_DISPLAY (display_wayland),
+                                                                      "default",
+                                                                      feedback);
      _gdk_wayland_display_async_roundtrip (display_wayland);
    }
  else if (strcmp (interface, "xdg_wm_base") == 0)
@@ -825,9 +743,7 @@ gdk_wayland_display_dispose (GObject *object)
  g_clear_pointer (&display_wayland->presentation, wp_presentation_destroy);
  g_clear_pointer (&display_wayland->single_pixel_buffer, wp_single_pixel_buffer_manager_v1_destroy);
  g_clear_pointer (&display_wayland->linux_dmabuf, zwp_linux_dmabuf_v1_destroy);
-  g_clear_pointer (&display_wayland->linux_dmabuf_feedback, zwp_linux_dmabuf_feedback_v1_destroy);
-  if (display_wayland->linux_dmabuf_formats)
-    munmap (display_wayland->linux_dmabuf_formats, display_wayland->linux_dmabuf_n_formats * 16);
+  g_clear_pointer (&display_wayland->dmabuf_formats_info, dmabuf_formats_info_free);

  g_clear_pointer (&display_wayland->shm, wl_shm_destroy);
  g_clear_pointer (&display_wayland->wl_registry, wl_registry_destroy);
@@ -1129,7 +1045,7 @@ G_GNUC_END_IGNORE_DEPRECATIONS
  display_class->get_monitors = gdk_wayland_display_get_monitors;
  display_class->get_monitor_at_surface = gdk_wayland_display_get_monitor_at_surface;
  display_class->get_setting = gdk_wayland_display_get_setting;
-  display_class->set_cursor_theme = gdk_wayland_display_set_cursor_theme;
+  display_class->set_cursor_theme = _gdk_wayland_display_set_cursor_theme;
 }

 static void
@@ -1202,11 +1118,22 @@ get_cursor_theme (GdkWaylandDisplay *display_wayland,
 * @size: the size to use for cursors
 *
 * Sets the cursor theme for the given @display.
+ *
+ * Deprecated: 4.16: Use the cursor-related properties of
+ *   [GtkSettings](../gtk4/class.Settings.html) to set the cursor theme
 */
 void
 gdk_wayland_display_set_cursor_theme (GdkDisplay *display,
                                      const char *name,
                                      int         size)
+{
+  _gdk_wayland_display_set_cursor_theme (display, name, size);
+}
+
+static void
+_gdk_wayland_display_set_cursor_theme (GdkDisplay *display,
+                                       const char *name,
+                                       int         size)
 {
  GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY(display);
  struct wl_cursor_theme *theme;
@@ -1275,7 +1202,7 @@ _gdk_wayland_display_load_cursor_theme (GdkWaylandDisplay *display_wayland)
  else
    name = "default";

-  gdk_wayland_display_set_cursor_theme (GDK_DISPLAY (display_wayland), name, size);
+  _gdk_wayland_display_set_cursor_theme (GDK_DISPLAY (display_wayland), name, size);
  g_value_unset (&v);

  gdk_profiler_end_mark (before, "Wayland cursor theme load", NULL);
@@ -1903,6 +1830,7 @@ apply_portal_setting (TranslationEntry *entry,
      entry->fallback.s = g_intern_string (g_variant_get_string (value, NULL));
      break;
    case G_TYPE_INT:
+    case G_TYPE_ENUM:
      entry->fallback.i = g_variant_get_int32 (value);
      break;
    case G_TYPE_BOOLEAN:
@@ -2152,6 +2080,9 @@ set_value_from_entry (GdkDisplay       *display,
        case G_TYPE_BOOLEAN:
          g_value_set_boolean (value, entry->fallback.b);
          break;
+        case G_TYPE_ENUM:
+          g_value_set_enum (value, entry->fallback.i);
+          break;
        case G_TYPE_NONE:
          if (g_str_equal (entry->setting, "gtk-fontconfig-timestamp"))
            g_value_set_uint (value, (guint)entry->fallback.i);
@@ -49,6 +49,7 @@

 #include "gdkdisplayprivate.h"
 #include "gdkwaylanddevice.h"
+#include "gdkdmabuf-wayland-private.h"
 #include "cursor/wayland-cursor.h"

 #include <epoxy/egl.h>
@@ -73,13 +74,6 @@ typedef enum _GdkWaylandShellVariant
  GDK_WAYLAND_SHELL_VARIANT_ZXDG_SHELL_V6
 } GdkWaylandShellVariant;

-typedef struct
-{
-  uint32_t fourcc;
-  uint32_t padding;
-  uint64_t modifier;
-} LinuxDmabufFormat;
-
 struct _GdkWaylandDisplay
 {
  GdkDisplay parent_instance;
@@ -105,9 +99,7 @@ struct _GdkWaylandDisplay
  struct wl_compositor *compositor;
  struct wl_shm *shm;
  struct zwp_linux_dmabuf_v1 *linux_dmabuf;
-  struct zwp_linux_dmabuf_feedback_v1 *linux_dmabuf_feedback;
-  gsize linux_dmabuf_n_formats;
-  LinuxDmabufFormat *linux_dmabuf_formats;
+  DmabufFormatsInfo *dmabuf_formats_info;
  struct xdg_wm_base *xdg_wm_base;
  struct zxdg_shell_v6 *zxdg_shell_v6;
  struct gtk_shell1 *gtk_shell;
@@ -0,0 +1,77 @@
+/*
+ * gdkdmabuf-wayland.h
+ *
+ * Copyright 2023 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "config.h"
+
+#include <stdint.h>
+#include <wayland-client.h>
+#include <wayland-egl.h>
+
+#include <glib.h>
+#include <gdk/gdkkeys.h>
+#include <gdk/gdksurface.h>
+
+G_BEGIN_DECLS
+
+typedef struct
+{
+  uint32_t fourcc;
+  uint32_t padding;
+  uint64_t modifier;
+} DmabufFormat;
+
+typedef struct
+{
+  dev_t target_device;
+  guint32 flags;
+  gsize n_formats;
+  DmabufFormat *formats;
+} DmabufTranche;
+
+typedef struct
+{
+  dev_t main_device;
+  GPtrArray *tranches;
+} DmabufFormats;
+
+typedef struct DmabufFormatsInfo DmabufFormatsInfo;
+
+struct DmabufFormatsInfo
+{
+  GdkDisplay *display;
+  char *name;
+  struct zwp_linux_dmabuf_feedback_v1 *feedback;
+
+  gsize n_dmabuf_formats;
+  DmabufFormat *dmabuf_format_table;
+
+  DmabufFormats *dmabuf_formats;
+  DmabufFormats *pending_dmabuf_formats;
+  DmabufTranche *pending_tranche;
+};
+
+DmabufFormatsInfo * dmabuf_formats_info_new  (GdkDisplay                          *display,
+                                              const char                          *name,
+                                              struct zwp_linux_dmabuf_feedback_v1 *feedback);
+
+void                dmabuf_formats_info_free (DmabufFormatsInfo                   *info);
+
+G_END_DECLS
@@ -0,0 +1,241 @@
+#include "config.h"
+
+#include "gdkdmabuf-wayland-private.h"
+
+#include "gdkdebugprivate.h"
+#include "gdkdmabufformatsprivate.h"
+#include "gdkdmabufformatsbuilderprivate.h"
+#include "gdkdmabufformatsprivate.h"
+
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <sys/sysmacros.h>
+
+#include "linux-dmabuf-unstable-v1-client-protocol.h"
+
+
+static DmabufTranche *
+dmabuf_tranche_new (void)
+{
+  return g_new0 (DmabufTranche, 1);
+}
+
+static void
+dmabuf_tranche_free (DmabufTranche *tranche)
+{
+  g_free (tranche->formats);
+  g_free (tranche);
+}
+
+static DmabufFormats *
+dmabuf_formats_new (void)
+{
+  DmabufFormats *formats;
+
+  formats = g_new0 (DmabufFormats, 1);
+  formats->tranches = g_ptr_array_new_with_free_func ((GDestroyNotify) dmabuf_tranche_free);
+
+  return formats;
+}
+
+static void
+dmabuf_formats_free (DmabufFormats *formats)
+{
+  g_ptr_array_unref (formats->tranches);
+  g_free (formats);
+}
+
+static void
+update_dmabuf_formats (DmabufFormatsInfo *info)
+{
+  DmabufFormats *formats = info->dmabuf_formats;
+
+  GDK_DISPLAY_DEBUG (info->display, MISC,
+                     "dmabuf format table (%lu entries)", info->n_dmabuf_formats);
+  GDK_DISPLAY_DEBUG (info->display, MISC,
+                     "dmabuf main device: %u %u",
+                     major (formats->main_device),
+                     minor (formats->main_device));
+
+  for (gsize i = 0; i < formats->tranches->len; i++)
+    {
+      DmabufTranche *tranche = g_ptr_array_index (formats->tranches, i);
+
+      GDK_DISPLAY_DEBUG (info->display, MISC,
+                         "dmabuf tranche target device: %u %u",
+                         major (tranche->target_device),
+                         minor (tranche->target_device));
+
+      GDK_DISPLAY_DEBUG (info->display, MISC,
+                         "dmabuf%s tranche (%lu entries):",
+                         tranche->flags & ZWP_LINUX_DMABUF_FEEDBACK_V1_TRANCHE_FLAGS_SCANOUT ? " scanout" : "",
+                         tranche->n_formats);
+
+      for (gsize j = 0; j < tranche->n_formats; j++)
+        {
+          GDK_DISPLAY_DEBUG (info->display, MISC,
+                             "  %.4s:%#" G_GINT64_MODIFIER "x",
+                             (char *) &(tranche->formats[j].fourcc),
+                             tranche->formats[j].modifier);
+        }
+    }
+}
+
+static void
+linux_dmabuf_done (void *data,
+                   struct zwp_linux_dmabuf_feedback_v1 *feedback)
+{
+  DmabufFormatsInfo *info = data;
+
+  g_clear_pointer (&info->dmabuf_formats, dmabuf_formats_free);
+
+  info->dmabuf_formats = info->pending_dmabuf_formats;
+  info->pending_dmabuf_formats = NULL;
+
+  update_dmabuf_formats (info);
+}
+
+static void
+linux_dmabuf_format_table (void *data,
+                           struct zwp_linux_dmabuf_feedback_v1 *feedback,
+                           int32_t fd,
+                           uint32_t size)
+{
+  DmabufFormatsInfo *info = data;
+
+  if (info->dmabuf_formats)
+    munmap (info->dmabuf_formats, sizeof (DmabufFormat) * info->n_dmabuf_formats);
+
+  info->n_dmabuf_formats = size / 16;
+  info->dmabuf_format_table = mmap (NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
+}
+
+static void
+linux_dmabuf_main_device (void *data,
+                          struct zwp_linux_dmabuf_feedback_v1 *feedback,
+                          struct wl_array *device)
+{
+  DmabufFormatsInfo *info = data;
+  dev_t dev;
+
+  memcpy (&dev, device->data, sizeof (dev_t));
+
+  g_assert (info->pending_dmabuf_formats == NULL);
+
+  info->pending_dmabuf_formats = dmabuf_formats_new ();
+  info->pending_dmabuf_formats->main_device = dev;
+}
+
+static void
+linux_dmabuf_tranche_done (void *data,
+                           struct zwp_linux_dmabuf_feedback_v1 *feedback)
+{
+  DmabufFormatsInfo *info = data;
+
+  g_ptr_array_add (info->pending_dmabuf_formats->tranches,
+                   info->pending_tranche);
+
+  info->pending_tranche = NULL;
+}
+
+static void
+linux_dmabuf_tranche_target_device (void *data,
+                                    struct zwp_linux_dmabuf_feedback_v1 *feedback,
+                                    struct wl_array *device)
+{
+  DmabufFormatsInfo *info = data;
+  dev_t dev;
+  DmabufTranche *tranche;
+
+  memcpy (&dev, device->data, sizeof (dev_t));
+
+  g_assert (info->pending_tranche == NULL);
+
+  tranche = dmabuf_tranche_new ();
+  tranche->target_device = dev;
+
+  info->pending_tranche = tranche;
+}
+
+static void
+linux_dmabuf_tranche_formats (void *data,
+                              struct zwp_linux_dmabuf_feedback_v1 *feedback,
+                              struct wl_array *indices)
+{
+  DmabufFormatsInfo *info = data;
+  DmabufTranche *tranche;
+  int i;
+  guint16 *pos;
+
+  g_assert (info->pending_tranche != NULL);
+  tranche = info->pending_tranche;
+
+  tranche->n_formats = indices->size / sizeof (guint16);
+  tranche->formats = g_new (DmabufFormat, tranche->n_formats);
+
+  i = 0;
+  wl_array_for_each (pos, indices)
+    {
+      tranche->formats[i++] = info->dmabuf_format_table[*pos];
+    }
+}
+
+static void
+linux_dmabuf_tranche_flags (void *data,
+                            struct zwp_linux_dmabuf_feedback_v1 *feedback,
+                            uint32_t flags)
+{
+  DmabufFormatsInfo *info = data;
+  DmabufTranche *tranche;
+
+  g_assert (info->pending_tranche != NULL);
+  tranche = info->pending_tranche;
+  tranche->flags = flags;
+}
+
+static const struct zwp_linux_dmabuf_feedback_v1_listener feedback_listener = {
+  linux_dmabuf_done,
+  linux_dmabuf_format_table,
+  linux_dmabuf_main_device,
+  linux_dmabuf_tranche_done,
+  linux_dmabuf_tranche_target_device,
+  linux_dmabuf_tranche_formats,
+  linux_dmabuf_tranche_flags,
+};
+
+DmabufFormatsInfo *
+dmabuf_formats_info_new (GdkDisplay                          *display,
+                         const char                          *name,
+                         struct zwp_linux_dmabuf_feedback_v1 *feedback)
+{
+  DmabufFormatsInfo *info;
+
+  info = g_new0 (DmabufFormatsInfo, 1);
+
+  info->display = display;
+  info->name = g_strdup (name);
+  info->feedback = feedback;
+
+  if (info->feedback)
+    zwp_linux_dmabuf_feedback_v1_add_listener (info->feedback,
+                                               &feedback_listener, info);
+
+  return info;
+}
+
+void
+dmabuf_formats_info_free (DmabufFormatsInfo *info)
+{
+  g_free (info->name);
+  g_clear_pointer (&info->feedback, zwp_linux_dmabuf_feedback_v1_destroy);
+  if (info->dmabuf_format_table)
+    {
+      munmap (info->dmabuf_format_table, info->n_dmabuf_formats * 16);
+      info->dmabuf_format_table = NULL;
+    }
+  g_clear_pointer (&info->dmabuf_formats, dmabuf_formats_free);
+  g_clear_pointer (&info->pending_dmabuf_formats, dmabuf_formats_free);
+  g_clear_pointer (&info->pending_tranche, dmabuf_tranche_free);
+
+  g_free (info);
+}
@@ -781,8 +781,8 @@ pointer_handle_motion (void              *data,
    {
      double x, y;
      gdk_event_get_position (event, &x, &y);
-      g_message ("motion %f %f, seat %p state %d",
-                 x, y, seat, gdk_event_get_modifier_state (event));
+      gdk_debug_message ("motion %f %f, seat %p state %d",
+                         x, y, seat, gdk_event_get_modifier_state (event));
    }

  if (wl_seat_get_version (seat->wl_seat) < WL_POINTER_HAS_FRAME)
@@ -1664,7 +1664,7 @@ touch_handle_down (void              *data,
    {
      double xx, yy;
      gdk_event_get_position (event, &xx, &yy);
-      g_message ("touch begin %f %f", xx, yy);
+      gdk_debug_message ("touch begin %f %f", xx, yy);
    }

  _gdk_wayland_display_deliver_event (seat->display, event);
@@ -1699,7 +1699,7 @@ touch_handle_up (void            *data,
    {
      double x, y;
      gdk_event_get_position (event, &x, &y);
-      g_message ("touch end %f %f", x, y);
+      gdk_debug_message ("touch end %f %f", x, y);
    }

  _gdk_wayland_display_deliver_event (seat->display, event);
@@ -1747,7 +1747,7 @@ touch_handle_motion (void            *data,
    {
      double xx, yy;
      gdk_event_get_position (event, &xx, &yy);
-      g_message ("touch update %f %f", xx, yy);
+      gdk_debug_message ("touch update %f %f", xx, yy);
    }

  _gdk_wayland_display_deliver_event (seat->display, event);
@@ -1841,9 +1841,9 @@ emit_gesture_swipe_event (GdkWaylandSeat          *seat,
    {
      double x, y;
      gdk_event_get_position (event, &x, &y);
-      g_message ("swipe event %d, coords: %f %f, seat %p state %d",
-                 gdk_event_get_event_type (event), x, y, seat,
-                 gdk_event_get_modifier_state (event));
+      gdk_debug_message ("swipe event %d, coords: %f %f, seat %p state %d",
+                         gdk_event_get_event_type (event), x, y, seat,
+                         gdk_event_get_modifier_state (event));
    }

  _gdk_wayland_display_deliver_event (seat->display, event);
@@ -1936,10 +1936,10 @@ emit_gesture_pinch_event (GdkWaylandSeat          *seat,
    {
      double x, y;
      gdk_event_get_position (event, &x, &y);
-      g_message ("pinch event %d, coords: %f %f, seat %p state %d",
-                       gdk_event_get_event_type (event),
-                       x, y, seat,
-                       gdk_event_get_modifier_state (event));
+      gdk_debug_message ("pinch event %d, coords: %f %f, seat %p state %d",
+                         gdk_event_get_event_type (event),
+                         x, y, seat,
+                         gdk_event_get_modifier_state (event));
    }

  _gdk_wayland_display_deliver_event (seat->display, event);
@@ -2030,10 +2030,10 @@ emit_gesture_hold_event (GdkWaylandSeat          *seat,
    {
      double x, y;
      gdk_event_get_position (event, &x, &y);
-      g_message ("hold event %d, coords: %f %f, seat %p state %d",
-                 gdk_event_get_event_type (event),
-                 x, y, seat,
-                 gdk_event_get_modifier_state (event));
+      gdk_debug_message ("hold event %d, coords: %f %f, seat %p state %d",
+                         gdk_event_get_event_type (event),
+                         x, y, seat,
+                         gdk_event_get_modifier_state (event));
    }

  _gdk_wayland_display_deliver_event (seat->display, event);
@@ -408,60 +408,64 @@ gdk_wayland_subsurface_attach (GdkSubsurface         *sub,
  if (has_background)
    ensure_bg_surface (self);

-  if (self->dest.x != dest->origin.x ||
-      self->dest.y != dest->origin.y ||
-      self->dest.width != dest->size.width ||
-      self->dest.height != dest->size.height)
+  if (!scaled_rect_is_integral (dest, 1, &device_rect))
    {
      GDK_DISPLAY_DEBUG (gdk_surface_get_display (sub->parent), OFFLOAD,
-                         "Non-integer coordinates %g %g %g %g for %dx%d texture, hiding subsurface %p",
+                         "[%p] 🗙 Non-integral coordinates %g %g %g %g",
+                         self,
                         dest->origin.x, dest->origin.y,
-                         dest->size.width, dest->size.height,
-                         gdk_texture_get_width (texture),
-                         gdk_texture_get_height (texture),
-                         self);
+                         dest->size.width, dest->size.height);
    }
  else if (!scaled_rect_is_integral (dest, scale, &device_rect))
    {
      GDK_DISPLAY_DEBUG (gdk_surface_get_display (sub->parent), OFFLOAD,
-                         "Non-integral device coordinates %g %g %g %g (fractional scale %.2f), hiding subsurface %p",
+                         "[%p] 🗙 Non-integral device coordinates %g %g %g %g (scale %.2f)",
+                         self,
                         device_rect.origin.x, device_rect.origin.y,
                         device_rect.size.width, device_rect.size.height,
-                         scale,
-                         self);
+                         scale);
+    }
+  else if (background && !scaled_rect_is_integral (background, 1, &device_rect))
+    {
+      GDK_DISPLAY_DEBUG (gdk_surface_get_display (sub->parent), OFFLOAD,
+                         "[%p] 🗙 Non-integral background coordinates %g %g %g %g",
+                         self,
+                         background->origin.x, background->origin.y,
+                         background->size.width, background->size.height);
    }
  else if (background && !scaled_rect_is_integral (background, scale, &device_rect))
    {
      GDK_DISPLAY_DEBUG (gdk_surface_get_display (sub->parent), OFFLOAD,
-                         "Non-integral background device coordinates %g %g %g %g (fractional scale %.2f), hiding background of subsurface %p",
+                         "[%p] 🗙 Non-integral background device coordinates %g %g %g %g (scale %.2f)",
+                         self,
                         device_rect.origin.x, device_rect.origin.y,
                         device_rect.size.width, device_rect.size.height,
-                         scale,
-                         self);
+                         scale);
    }
  else if (!GDK_IS_DMABUF_TEXTURE (texture) &&
           !GDK_DISPLAY_DEBUG_CHECK (gdk_surface_get_display (sub->parent), FORCE_OFFLOAD))
    {
      GDK_DISPLAY_DEBUG (gdk_surface_get_display (sub->parent), OFFLOAD,
-                         "%dx%d %s is not a GdkDmabufTexture, hiding subsurface %p",
-                         gdk_texture_get_width (texture),
-                         gdk_texture_get_height (texture),
+                         "[%p] 🗙 %s (%dx%d) is not a GdkDmabufTexture",
+                         self,
                         G_OBJECT_TYPE_NAME (texture),
-                         self);
+                         gdk_texture_get_width (texture),
+                         gdk_texture_get_height (texture));
    }
  else if (!will_be_above &&
-           gdk_memory_format_alpha (gdk_texture_get_format (texture)) != GDK_MEMORY_ALPHA_OPAQUE)
+           gdk_memory_format_alpha (gdk_texture_get_format (texture)) != GDK_MEMORY_ALPHA_OPAQUE &&
+           !has_background)
    {
      GDK_DISPLAY_DEBUG (gdk_surface_get_display (sub->parent), OFFLOAD,
-                         "Cannot offload non-opaque %dx%d texture below, hiding subsurface %p",
+                         "[%p] 🗙 Non-opaque texture (%dx%d) below",
+                         self,
                         gdk_texture_get_width (texture),
-                         gdk_texture_get_height (texture),
-                         self);
+                         gdk_texture_get_height (texture));
    }
  else if (has_background && !display->single_pixel_buffer)
    {
      GDK_DISPLAY_DEBUG (gdk_surface_get_display (sub->parent), OFFLOAD,
-                         "Cannot offload subsurface %p with background, no single-pixel buffer support",
+                         "[%p] 🗙 Texture has background, but no single-pixel buffer support",
                         self);
    }
  else
@@ -490,10 +494,13 @@ gdk_wayland_subsurface_attach (GdkSubsurface         *sub,
                }

              GDK_DISPLAY_DEBUG (gdk_surface_get_display (sub->parent), OFFLOAD,
-                                 "Attached %dx%d texture to subsurface %p at %d %d %d %d",
+                                 "[%p] %s Attaching texture (%dx%d) at %d %d %d %d",
+                                 self,
+                                 will_be_above
+                                   ? (has_background ? "▲" : "△")
+                                   : (has_background ? "▼" : "▽"),
                                 gdk_texture_get_width (texture),
                                 gdk_texture_get_height (texture),
-                                 self,
                                 self->dest.x, self->dest.y,
                                 self->dest.width, self->dest.height);
              result = TRUE;
@@ -501,22 +508,25 @@ gdk_wayland_subsurface_attach (GdkSubsurface         *sub,
          else
            {
              GDK_DISPLAY_DEBUG (gdk_surface_get_display (sub->parent), OFFLOAD,
-                                 "Compositor failed to create wl_buffer for %dx%d texture, hiding subsurface %p",
-                                 gdk_texture_get_width (texture),
-                                 gdk_texture_get_height (texture),
+                                 "[%p] 🗙 Failed to create wl_buffer",
                                 self);
            }
        }
      else
        {
+          if (dest_changed)
+            GDK_DISPLAY_DEBUG (gdk_surface_get_display (sub->parent), OFFLOAD,
+                               "[%p] %s Moving texture (%dx%d) to %d %d %d %d",
+                               self,
+                               will_be_above
+                                 ? (has_background ? "▲" : "△")
+                                 : (has_background ? "▼" : "▽"),
+                               gdk_texture_get_width (texture),
+                               gdk_texture_get_height (texture),
+                               self->dest.x, self->dest.y,
+                               self->dest.width, self->dest.height);
+
          buffer = NULL;
-          GDK_DISPLAY_DEBUG (gdk_surface_get_display (sub->parent), OFFLOAD,
-                             "Moved %dx%d texture in subsurface %p to %d %d %d %d",
-                             gdk_texture_get_width (texture),
-                             gdk_texture_get_height (texture),
-                             self,
-                             self->dest.x, self->dest.y,
-                             self->dest.width, self->dest.height);
          result = TRUE;
        }
    }
@@ -653,7 +663,7 @@ gdk_wayland_subsurface_detach (GdkSubsurface *sub)

  if (sub->parent == NULL)
    {
-      g_warning ("Can't draw to destroyed subsurface %p", self);
+      g_warning ("Can't detach from destroyed subsurface %p", self);
      return;
    }

@@ -821,6 +821,11 @@ gdk_wayland_surface_fractional_scale_preferred_scale_cb (void *data,
  gdk_wayland_surface_update_size (surface,
                                   surface->width, surface->height,
                                   &GDK_FRACTIONAL_SCALE_INIT (scale));
+
+  GDK_DISPLAY_DEBUG (gdk_surface_get_display (surface), EVENTS,
+                     "preferred fractional scale, surface %p scale %f",
+                     surface,
+                     gdk_fractional_scale_to_double (&GDK_FRACTIONAL_SCALE_INIT (scale)));
 }

 static const struct wp_fractional_scale_v1_listener fractional_scale_listener = {
@@ -837,8 +842,8 @@ surface_enter (void              *data,
  GdkDisplay *display = gdk_surface_get_display (surface);
  GdkMonitor *monitor;

-  GDK_DISPLAY_DEBUG(gdk_surface_get_display (surface), EVENTS,
-                    "surface enter, surface %p output %p", surface, output);
+  GDK_DISPLAY_DEBUG (gdk_surface_get_display (surface), EVENTS,
+                     "surface enter, surface %p output %p", surface, output);

  impl->display_server.outputs = g_slist_prepend (impl->display_server.outputs, output);

@@ -870,9 +875,38 @@ surface_leave (void              *data,
  gdk_surface_leave_monitor (surface, monitor);
 }

+static void
+surface_preferred_buffer_scale (void              *data,
+                                struct wl_surface *wl_surface,
+                                int32_t            factor)
+{
+  GdkSurface *surface = GDK_SURFACE (data);
+
+  GDK_DISPLAY_DEBUG (gdk_surface_get_display (surface), EVENTS,
+                     "preferred buffer scale, surface %p scale %d",
+                     surface, factor);
+}
+
+static void
+surface_preferred_buffer_transform (void              *data,
+                                    struct wl_surface *wl_surface,
+                                    uint32_t           transform)
+{
+  GdkSurface *surface = GDK_SURFACE (data);
+  const char *transform_name[] = {
+    "normal", "90", "180", "270", "flipped", "flipped-90", "flipped-180", "flipped-270"
+  };
+
+  GDK_DISPLAY_DEBUG (gdk_surface_get_display (surface), EVENTS,
+                     "preferred buffer transform, surface %p transform %s",
+                     surface, transform_name[transform]);
+}
+
 static const struct wl_surface_listener surface_listener = {
  surface_enter,
-  surface_leave
+  surface_leave,
+  surface_preferred_buffer_scale,
+  surface_preferred_buffer_transform,
 };

 static void
@@ -48,7 +48,7 @@ GDK_AVAILABLE_IN_ALL
 struct wl_display      *gdk_wayland_display_get_wl_display      (GdkDisplay *display);
 GDK_AVAILABLE_IN_ALL
 struct wl_compositor   *gdk_wayland_display_get_wl_compositor   (GdkDisplay *display);
-GDK_AVAILABLE_IN_ALL
+GDK_DEPRECATED_IN_4_16
 void                    gdk_wayland_display_set_cursor_theme    (GdkDisplay  *display,
                                                                 const char *name,
                                                                 int          size);
@@ -60,7 +60,7 @@ void                    gdk_wayland_display_set_startup_notification_id (GdkDisp

 GDK_AVAILABLE_IN_ALL
 gboolean                gdk_wayland_display_query_registry      (GdkDisplay  *display,
-								 const char *global);
+                                                                 const char *global);

 GDK_AVAILABLE_IN_4_4
 gpointer                gdk_wayland_display_get_egl_display     (GdkDisplay  *display);
@@ -8,6 +8,7 @@ gdk_wayland_sources = files([
  'gdkdevice-wayland.c',
  'gdkdevicepad-wayland.c',
  'gdkdisplay-wayland.c',
+  'gdkdmabuf-wayland.c',
  'gdkdrag-wayland.c',
  'gdkdragsurface-wayland.c',
  'gdkdrop-wayland.c',
@@ -908,7 +908,9 @@ _gdk_win32_create_hicon_for_texture (GdkTexture *texture,
  width = cairo_image_surface_get_width (surface);
  height = cairo_image_surface_get_height (surface);

+G_GNUC_BEGIN_IGNORE_DEPRECATIONS
  pixbuf = gdk_pixbuf_get_from_surface (surface, 0, 0, width, height);
+G_GNUC_END_IGNORE_DEPRECATIONS

  icon = pixbuf_to_hicon (pixbuf, is_icon, x, y);

@@ -267,7 +267,7 @@ create_dummy_gl_window (void)
 {
  WNDCLASS wclass = { 0, };
  ATOM klass;
-  HWND hwnd;
+  HWND hwnd = NULL;

  wclass.lpszClassName = "GdkGLDummyWindow";
  wclass.lpfnWndProc = DefWindowProc;
@@ -38,7 +38,6 @@ gdk_win32_vulkan_context_create_surface (GdkVulkanContext *context,
 {
  GdkSurface *window = gdk_draw_context_get_surface (GDK_DRAW_CONTEXT (context));
  GdkDisplay *display = gdk_draw_context_get_display (GDK_DRAW_CONTEXT (context));
-  GdkWin32Surface *win32_surface = GDK_WIN32_SURFACE (window);
  VkWin32SurfaceCreateInfoKHR info;
  VkResult result;

@@ -274,11 +274,22 @@ gdk_x11_cursor_create_for_name (GdkDisplay  *display,
 * will have to be handled by the application (GTK applications can learn
 * about cursor theme changes by listening for change notification
 * for the corresponding `GtkSetting`).
+ *
+ * Deprecated: 4.16: Use the cursor-related properties of
+ *   [GtkSettings](../gtk4/class.Settings.html) to set the cursor theme
 */
 void
 gdk_x11_display_set_cursor_theme (GdkDisplay  *display,
                                  const char *theme,
                                  const int    size)
+{
+  _gdk_x11_display_set_cursor_theme (display, theme, size);
+}
+
+void
+_gdk_x11_display_set_cursor_theme (GdkDisplay  *display,
+                                   const char *theme,
+                                   const int    size)
 {
 #if defined(HAVE_XCURSOR) && defined(HAVE_XFIXES) && XFIXES_MAJOR >= 2
  GdkX11Screen *x11_screen;
@@ -3078,7 +3078,7 @@ G_GNUC_END_IGNORE_DEPRECATIONS

  display_class->get_monitors = gdk_x11_display_get_monitors;
  display_class->get_setting = gdk_x11_display_get_setting;
-  display_class->set_cursor_theme = gdk_x11_display_set_cursor_theme;
+  display_class->set_cursor_theme = _gdk_x11_display_set_cursor_theme;

  class->xevent = gdk_event_source_xevent;

@@ -206,6 +206,10 @@ GdkFilterReturn
 gdk_surface_cache_shape_filter (const XEvent *xevent,
                                gpointer      data);

+void _gdk_x11_display_set_cursor_theme (GdkDisplay  *display,
+                                        const char *theme,
+                                        const int    size);
+
 void _gdk_x11_cursor_display_finalize (GdkDisplay *display);

 void _gdk_x11_surface_register_dnd (GdkSurface *window);
@@ -68,6 +68,11 @@ gdk_x11_vulkan_context_end_frame (GdkDrawContext *context,
  GDK_DRAW_CONTEXT_CLASS (gdk_x11_vulkan_context_parent_class)->end_frame (context, painted);
 }

+static void
+gdk_x11_vulkan_context_empty_frame (GdkDrawContext *draw_context)
+{
+}
+
 static void
 gdk_x11_vulkan_context_class_init (GdkX11VulkanContextClass *klass)
 {
@@ -75,6 +80,7 @@ gdk_x11_vulkan_context_class_init (GdkX11VulkanContextClass *klass)
  GdkDrawContextClass *draw_context_class = GDK_DRAW_CONTEXT_CLASS (klass);

  draw_context_class->end_frame = gdk_x11_vulkan_context_end_frame;
+  draw_context_class->empty_frame = gdk_x11_vulkan_context_empty_frame;

  context_class->create_surface = gdk_x11_vulkan_context_create_surface;
 }
@@ -88,7 +88,7 @@ GDK_AVAILABLE_IN_ALL
 void          gdk_x11_display_set_program_class                   (GdkDisplay  *display,
                                                                   const char  *program_class);

-GDK_AVAILABLE_IN_ALL
+GDK_DEPRECATED_IN_4_16
 void          gdk_x11_display_set_cursor_theme (GdkDisplay  *display,
                                                const char *theme,
                                                const int    size);
@@ -19,7 +19,7 @@ static gint64 profiler_buffer_uploads;
 static void
 gsk_gpu_buffer_class_init (GskGpuBufferClass *klass)
 {
-  profiler_buffer_uploads_id = gdk_profiler_define_int_counter ("ngl-buffer-uploads", "Number of bytes uploaded to GPU");
+  profiler_buffer_uploads_id = gdk_profiler_define_int_counter ("buffer-uploads", "Number of bytes uploaded to GPU");
 }

 static void
@@ -546,7 +546,7 @@ gsk_gpu_device_maybe_gc (GskGpuDevice *self)

  if (priv->cache_timeout == 0 || dead_texture_pixels > 1000000)
    {
-      GSK_DEBUG (GLYPH_CACHE, "Pre-frame GC (%lu dead pixels)", dead_texture_pixels);
+      GSK_DEBUG (GLYPH_CACHE, "Pre-frame GC (%" G_GSIZE_FORMAT " dead pixels)", dead_texture_pixels);
      gsk_gpu_device_gc (self, g_get_monotonic_time ());
    }
 }
@@ -345,8 +345,8 @@ gsk_gpu_node_processor_init_draw (GskGpuNodeProcessor   *self,

  area.x = 0;
  area.y = 0;
-  area.width = ceilf (graphene_vec2_get_x (scale) * viewport->size.width - EPSILON);
-  area.height = ceilf (graphene_vec2_get_y (scale) * viewport->size.height - EPSILON);
+  area.width = MAX (1, ceilf (graphene_vec2_get_x (scale) * viewport->size.width - EPSILON));
+  area.height = MAX (1, ceilf (graphene_vec2_get_y (scale) * viewport->size.height - EPSILON));

  image = gsk_gpu_device_create_offscreen_image (gsk_gpu_frame_get_device (frame),
                                                 FALSE,
@@ -313,6 +313,11 @@ gsk_gpu_upload_texture_op_try (GskGpuFrame *frame,
    {
      GEnumClass *enum_class = g_type_class_ref (GDK_TYPE_MEMORY_FORMAT);

+      if (!GDK_IS_MEMORY_TEXTURE (texture))
+        {
+          gdk_debug_message ("Unoptimized upload for %s", G_OBJECT_TYPE_NAME (texture));
+        }
+
      if (gdk_texture_get_format (texture) != gsk_gpu_image_get_format (image))
        {
          gdk_debug_message ("Unsupported format %s, converting on CPU to %s",
@@ -48,5 +48,5 @@ gsk_vulkan_descriptors_bind (GskVulkanDescriptors *self,
                             GskVulkanDescriptors *previous,
                             VkCommandBuffer       vk_command_buffer)
 {
-  return GSK_VULKAN_DESCRIPTORS_GET_CLASS (self)->bind (self, previous, vk_command_buffer);
+  GSK_VULKAN_DESCRIPTORS_GET_CLASS (self)->bind (self, previous, vk_command_buffer);
 }
@@ -9,6 +9,7 @@

 #include "gdk/gdkdisplayprivate.h"
 #include "gdk/gdkvulkancontextprivate.h"
+#include "gdk/gdkprofilerprivate.h"

 struct _GskVulkanDevice
 {
@@ -786,7 +787,7 @@ gsk_vulkan_device_get_vk_conversion (GskVulkanDevice *self,
                                                    .sType = VK_STRUCTURE_TYPE_SAMPLER_YCBCR_CONVERSION_CREATE_INFO,
                                                    .format = vk_format,
                                                    .ycbcrModel = VK_SAMPLER_YCBCR_MODEL_CONVERSION_YCBCR_601,
-                                                    .ycbcrRange = VK_SAMPLER_YCBCR_RANGE_ITU_FULL,
+                                                    .ycbcrRange = VK_SAMPLER_YCBCR_RANGE_ITU_NARROW,
                                                    .components = (VkComponentMapping) {
                                                        VK_COMPONENT_SWIZZLE_IDENTITY,
                                                        VK_COMPONENT_SWIZZLE_IDENTITY,
@@ -949,6 +950,9 @@ gsk_vulkan_device_get_vk_pipeline (GskVulkanDevice           *self,
  GdkDisplay *display;
  const char *version_string;
  char *vertex_shader_name, *fragment_shader_name;
+  G_GNUC_UNUSED gint64 begin_time = GDK_PROFILER_CURRENT_TIME;
+  const char *clip_name[] = { "NONE", "RECT", "ROUNDED" };
+  const char *blend_name[] = { "OVER", "ADD", "CLEAR" };

  cache_key = (PipelineCacheKey) {
    .op_class = op_class,
@@ -1125,6 +1129,27 @@ gsk_vulkan_device_get_vk_pipeline (GskVulkanDevice           *self,
                                           NULL,
                                           &pipeline);

+  gdk_profiler_end_markf (begin_time,
+                          "Create Vulkan pipeline", "%s version=%s variation=%u clip=%s blend=%s format=%u",
+                          op_class->shader_name,
+                          version_string + 1,
+                          variation,
+                          clip_name[clip],
+                          blend_name[blend],
+                          format);
+
+  GSK_DEBUG (SHADERS,
+             "Create Vulkan pipeline (%s %s, %u/%s/%s/%u) for layout (%" G_GSIZE_FORMAT "/%" G_GSIZE_FORMAT "/%" G_GSIZE_FORMAT ")",
+             op_class->shader_name,
+             version_string + 1,
+             variation,
+             clip_name[clip],
+             blend_name[blend],
+             format,
+             layout->setup.n_buffers,
+             layout->setup.n_samplers,
+             layout->setup.n_immutable_samplers);
+
  g_free (fragment_shader_name);
  g_free (vertex_shader_name);

@@ -825,7 +825,7 @@ gsk_vulkan_image_new_for_dmabuf (GskVulkanDevice *device,
  self->vk_tiling = VK_IMAGE_TILING_DRM_FORMAT_MODIFIER_EXT;
  self->vk_format = vk_format;
  self->vk_pipeline_stage = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
-  self->vk_image_layout = VK_IMAGE_LAYOUT_UNDEFINED;
+  self->vk_image_layout = VK_IMAGE_LAYOUT_GENERAL;
  self->vk_access = 0;

  res  = vkCreateImage (vk_device,
@@ -130,18 +130,14 @@ find_texture_to_attach (GskOffload           *self,
                  gsk_rect_equal (&bounds, &subsurface_node->bounds) &&
                  gdk_rgba_equal (gsk_color_node_get_color (child), &GDK_RGBA_BLACK))
                {
-                  GDK_DISPLAY_DEBUG (gdk_surface_get_display (self->surface), OFFLOAD,
-                                     "Offloading subsurface %p with background",
-                                     subsurface);
                  *has_background = TRUE;
-
                  node = gsk_container_node_get_child (node, 1);
                  break;
                }
            }

          GDK_DISPLAY_DEBUG (gdk_surface_get_display (self->surface), OFFLOAD,
-                             "Can't offload subsurface %p: too much content, container with %d children",
+                             "[%p] 🗙 Too much content, container with %d children",
                             subsurface, gsk_container_node_get_n_children (node));
          goto out;

@@ -153,7 +149,7 @@ find_texture_to_attach (GskOffload           *self,
              {
                char *s = gsk_transform_to_string (t);
                GDK_DISPLAY_DEBUG (gdk_surface_get_display (self->surface), OFFLOAD,
-                                   "Can't offload subsurface %p: transform %s is not just scale/translate",
+                                   "[%p] 🗙 Transform %s is not just scale/translate",
                                   subsurface, s);
                g_free (s);
                goto out;
@@ -181,7 +177,7 @@ find_texture_to_attach (GskOffload           *self,
                if (!gsk_rect_intersection (c, &clip, &clip))
                  {
                    GDK_DISPLAY_DEBUG (gdk_surface_get_display (self->surface), OFFLOAD,
-                                      "Can't offload subsurface %p: empty clip", subsurface);
+                                       "[%p] 🗙 Empty clip", subsurface);
                    goto out;
                  }
              }
@@ -231,7 +227,7 @@ find_texture_to_attach (GskOffload           *self,

        default:
          GDK_DISPLAY_DEBUG (gdk_surface_get_display (self->surface), OFFLOAD,
-                             "Can't offload subsurface %p: Only textures supported but found %s",
+                             "[%p] 🗙 Only textures supported (found %s)",
                             subsurface, g_type_name_from_instance ((GTypeInstance *) node));
          goto out;
        }
@@ -492,7 +488,7 @@ visit_node (GskOffload    *self,
                  type != GSK_DEBUG_NODE)
                {
                  GDK_DISPLAY_DEBUG (gdk_surface_get_display (self->surface), OFFLOAD,
-                                     "Can't raise subsurface %p because a %s overlaps",
+                                     "[%p]   Lowering because a %s overlaps",
                                     info->subsurface,
                                     g_type_name_from_instance ((GTypeInstance *) node));
                  info->can_raise = FALSE;
@@ -635,19 +631,19 @@ complex_clip:
        if (info == NULL)
          {
            GDK_DISPLAY_DEBUG (gdk_surface_get_display (self->surface), OFFLOAD,
-                               "Can't offload: unknown subsurface %p",
+                               "[%p] 🗙 Unknown subsurface",
                               subsurface);
          }
        else if (!self->current_clip->is_fully_contained)
          {
            GDK_DISPLAY_DEBUG (gdk_surface_get_display (self->surface), OFFLOAD,
-                               "Can't offload subsurface %p: clipped",
+                               "[%p] 🗙 Clipped",
                               subsurface);
          }
        else if (gsk_transform_get_category (transform) < GSK_TRANSFORM_CATEGORY_2D_AFFINE)
          {
            GDK_DISPLAY_DEBUG (gdk_surface_get_display (self->surface), OFFLOAD,
-                               "Can't offload subsurface %p: non-affine transform",
+                               "[%p] 🗙 Non-affine transform",
                               subsurface);
          }
        else
@@ -684,7 +680,6 @@ gsk_offload_new (GdkSurface     *surface,
                 GskRenderNode  *root,
                 cairo_region_t *diff)
 {
-  GdkDisplay *display = gdk_surface_get_display (surface);
  GskOffload *self;

  self = g_new0 (GskOffload, 1);
@@ -752,17 +747,10 @@ gsk_offload_new (GdkSurface     *surface,
        {
          info->is_offloaded = FALSE;
          if (info->was_offloaded)
-            {
-              GDK_DISPLAY_DEBUG (display, OFFLOAD, "Hiding subsurface %p", info->subsurface);
-              gdk_subsurface_detach (info->subsurface);
-            }
+            gdk_subsurface_detach (info->subsurface);
        }

-      if (info->is_offloaded && gdk_subsurface_is_above_parent (info->subsurface))
-        {
-          GDK_DISPLAY_DEBUG (display, OFFLOAD, "Raising subsurface %p", info->subsurface);
-          info->is_above = TRUE;
-        }
+      info->is_above = info->is_offloaded && gdk_subsurface_is_above_parent (info->subsurface);

      gdk_subsurface_get_bounds (info->subsurface, &bounds);

@@ -1143,10 +1143,10 @@ gsk_path_builder_rel_conic_to (GskPathBuilder *self,
 * @x2: x coordinate of second control point
 * @y2: y coordinate of second control point
 *
- * Adds an elliptical arc from the current point to @x3, @y3
+ * Adds an elliptical arc from the current point to @x2, @y2
 * with @x1, @y1 determining the tangent directions.
 *
- * After this, @x3, @y3 will be the new current point.
+ * After this, @x2, @y2 will be the new current point.
 *
 * Note: Two points and their tangents do not determine
 * a unique ellipse, so GSK just picks one. If you need more
@@ -1180,7 +1180,7 @@ gsk_path_builder_arc_to (GskPathBuilder *self,
 * @x2: x coordinate of second control point
 * @y2: y coordinate of second control point
 *
- * Adds an elliptical arc from the current point to @x3, @y3
+ * Adds an elliptical arc from the current point to @x2, @y2
 * with @x1, @y1 determining the tangent directions.
 *
 * All coordinates are given relative to the current point.
@@ -28,7 +28,9 @@ G_BEGIN_DECLS

 typedef enum
 {
+  /* path has only lines */
  GSK_PATH_FLAT,
+  /* all contours are closed */
  GSK_PATH_CLOSED
 } GskPathFlags;

@@ -1,5 +1,4 @@
 /* GSK - The GTK Scene Kit
- *
 * Copyright 2016  Endless
 *
 * This library is free software; you can redistribute it and/or
@@ -429,21 +428,6 @@ gsk_renderer_render_texture (GskRenderer           *renderer,

  texture = GSK_RENDERER_GET_CLASS (renderer)->render_texture (renderer, root, viewport);

-  if (GSK_RENDERER_DEBUG_CHECK (renderer, RENDERER))
-    {
-      GString *buf = g_string_new ("*** Texture stats ***\n\n");
-
-      gsk_profiler_append_counters (priv->profiler, buf);
-      g_string_append_c (buf, '\n');
-
-      gsk_profiler_append_timers (priv->profiler, buf);
-      g_string_append_c (buf, '\n');
-
-      g_print ("%s\n***\n\n", buf->str);
-
-      g_string_free (buf, TRUE);
-    }
-
  return texture;
 }

@@ -510,21 +494,6 @@ gsk_renderer_render (GskRenderer          *renderer,

  renderer_class->render (renderer, root, clip);

-  if (GSK_RENDERER_DEBUG_CHECK (renderer, RENDERER))
-    {
-      GString *buf = g_string_new ("*** Frame stats ***\n\n");
-
-      gsk_profiler_append_counters (priv->profiler, buf);
-      g_string_append_c (buf, '\n');
-
-      gsk_profiler_append_timers (priv->profiler, buf);
-      g_string_append_c (buf, '\n');
-
-      g_print ("%s\n***\n\n", buf->str);
-
-      g_string_free (buf, TRUE);
-    }
-
  g_clear_pointer (&priv->prev_node, gsk_render_node_unref);
  cairo_region_destroy (clip);
  g_clear_pointer (&offload, gsk_offload_free);
@@ -610,12 +579,17 @@ get_renderer_for_display (GdkSurface *surface)
 static GType
 get_renderer_for_env_var (GdkSurface *surface)
 {
-  static GType env_var_type = G_TYPE_NONE;
+  static GType env_var_type = G_TYPE_INVALID;

-  if (env_var_type == G_TYPE_NONE)
+  if (env_var_type == G_TYPE_INVALID)
    {
      const char *renderer_name = g_getenv ("GSK_RENDERER");
      env_var_type = get_renderer_for_name (renderer_name);
+      if (env_var_type != G_TYPE_INVALID)
+        GSK_DEBUG (RENDERER,
+                   "Environment variable GSK_RENDERER=%s set, trying %s",
+                   renderer_name,
+                   g_type_name (env_var_type));
    }

  return env_var_type;
@@ -633,63 +607,115 @@ get_renderer_for_backend (GdkSurface *surface)
 }

 static gboolean
-gl_software_rendering (GdkSurface *surface)
+gl_supported_platform (GdkSurface *surface,
+                       GType       renderer_type,
+                       gboolean    as_fallback)
 {
  GdkDisplay *display = gdk_surface_get_display (surface);
  GdkGLContext *context;
+  GError *error = NULL;

-  if (!gdk_display_prepare_gl (display, NULL))
-    return G_TYPE_INVALID;
+  if (!gdk_display_prepare_gl (display, &error))
+    {
+      if (!as_fallback)
+        GSK_DEBUG (RENDERER, "Not using GL: %s", error->message);
+      g_clear_error (&error);
+      return FALSE;
+    }
+
+  if (as_fallback)
+    return TRUE;

  context = gdk_display_get_gl_context (display);
  gdk_gl_context_make_current (context);

-  return strstr ((const char *) glGetString (GL_RENDERER), "llvmpipe") != NULL;
+  if (strstr ((const char *) glGetString (GL_RENDERER), "llvmpipe") != NULL)
+    {
+      GSK_DEBUG (RENDERER, "Not using '%s': renderer is llvmpipe", g_type_name (renderer_type));
+      return FALSE;
+    }
+
+  return TRUE;
 }

 static GType
 get_renderer_for_gl (GdkSurface *surface)
 {
-  if (gl_software_rendering (surface))
+  if (!gl_supported_platform (surface, gsk_ngl_renderer_get_type (), FALSE))
    return G_TYPE_INVALID;

  return gsk_ngl_renderer_get_type ();
 }

+static GType
+get_renderer_for_gl_fallback (GdkSurface *surface)
+{
+  if (!gl_supported_platform (surface, GSK_TYPE_GL_RENDERER, TRUE))
+    return G_TYPE_INVALID;
+
+  return GSK_TYPE_GL_RENDERER;
+}
+
 #ifdef GDK_RENDERING_VULKAN
 static gboolean
-vulkan_software_rendering (GdkSurface *surface)
+vulkan_supported_platform (GdkSurface *surface,
+                           GType       renderer_type,
+                           gboolean    as_fallback)
 {
  GdkDisplay *display = gdk_surface_get_display (surface);
  VkPhysicalDeviceProperties props;
+  GError *error = NULL;

-  if (!gdk_display_init_vulkan (display, NULL))
-    return G_TYPE_INVALID;
+  if (!gdk_display_init_vulkan (display, &error))
+    {
+      if (!as_fallback)
+        GSK_DEBUG (RENDERER, "Not using Vulkan: %s", error->message);
+      g_clear_error (&error);
+      return FALSE;
+    }

  vkGetPhysicalDeviceProperties (display->vk_physical_device, &props);

-  return props.deviceType == VK_PHYSICAL_DEVICE_TYPE_CPU;
-}
+  if (props.deviceType == VK_PHYSICAL_DEVICE_TYPE_CPU)
+    {
+      if (!as_fallback)
+        GSK_DEBUG (RENDERER,
+                   "Not using '%s': device is CPU",
+                   g_type_name (renderer_type));
+      return FALSE;
+    }
+
+  if (as_fallback)
+    return TRUE;
+
+#ifdef GDK_WINDOWING_WAYLAND
+  if (GDK_IS_WAYLAND_DISPLAY (gdk_surface_get_display (surface)))
+    return TRUE;
 #endif

+  GSK_DEBUG (RENDERER, "Not using '%s': platform is not Wayland", g_type_name (renderer_type));
+
+  return FALSE;
+}
+
 static GType
 get_renderer_for_vulkan (GdkSurface *surface)
 {
-#ifdef GDK_RENDERING_VULKAN
-  if (vulkan_software_rendering (surface))
+  if (!vulkan_supported_platform (surface, GSK_TYPE_VULKAN_RENDERER, FALSE))
    return G_TYPE_INVALID;

  return GSK_TYPE_VULKAN_RENDERER;
-#else
-  return G_TYPE_INVALID;
-#endif
 }

 static GType
-get_renderer_for_gles2 (GdkSurface *surface)
+get_renderer_for_vulkan_fallback (GdkSurface *surface)
 {
-  return GSK_TYPE_GL_RENDERER;
+  if (!vulkan_supported_platform (surface, GSK_TYPE_VULKAN_RENDERER, TRUE))
+    return G_TYPE_INVALID;
+
+  return GSK_TYPE_VULKAN_RENDERER;
 }
+#endif

 static GType
 get_renderer_fallback (GdkSurface *surface)
@@ -703,9 +729,14 @@ static struct {
  { get_renderer_for_display },
  { get_renderer_for_env_var },
  { get_renderer_for_backend },
-  { get_renderer_for_gl },
-  { get_renderer_for_gles2 },
+#ifdef GDK_RENDERING_VULKAN
  { get_renderer_for_vulkan },
+#endif
+  { get_renderer_for_gl },
+#ifdef GDK_RENDERING_VULKAN
+  { get_renderer_for_vulkan_fallback },
+#endif
+  { get_renderer_for_gl_fallback },
  { get_renderer_fallback },
 };

@@ -743,17 +774,19 @@ gsk_renderer_new_for_surface (GdkSurface *surface)

      if (gsk_renderer_realize (renderer, surface, &error))
        {
-          GSK_RENDERER_DEBUG (renderer, RENDERER,
-                              "Using renderer of type '%s' for surface '%s'",
-                              G_OBJECT_TYPE_NAME (renderer),
-                              G_OBJECT_TYPE_NAME (surface));
+          GSK_DEBUG (RENDERER,
+                     "Using renderer '%s' for surface '%s'",
+                     G_OBJECT_TYPE_NAME (renderer),
+                     G_OBJECT_TYPE_NAME (surface));
          return renderer;
        }

-      g_message ("Failed to realize renderer of type '%s' for surface '%s': %s\n",
+      GSK_DEBUG (RENDERER,
+                 "Failed to realize renderer '%s' for surface '%s': %s",
                 G_OBJECT_TYPE_NAME (renderer),
                 G_OBJECT_TYPE_NAME (surface),
                 error->message);
+
      g_object_unref (renderer);
      g_clear_error (&error);
    }
@@ -2312,6 +2312,25 @@ parse_antialias (GtkCssParser *parser,
  return TRUE;
 }

+static gboolean
+parse_hint_metrics (GtkCssParser *parser,
+                    Context      *context,
+                    gpointer      out)
+{
+  if (!parse_enum (parser, CAIRO_GOBJECT_TYPE_HINT_METRICS, out))
+    return FALSE;
+
+  if (*(cairo_hint_metrics_t *) out != CAIRO_HINT_METRICS_OFF &&
+      *(cairo_hint_metrics_t *) out != CAIRO_HINT_METRICS_ON)
+    {
+      gtk_css_parser_error_value (parser, "Unsupported value for enum \"%s\"",
+                                  g_type_name (CAIRO_GOBJECT_TYPE_HINT_METRICS));
+      return FALSE;
+    }
+
+  return TRUE;
+}
+
 static GskRenderNode *
 parse_text_node (GtkCssParser *parser,
                 Context      *context)
@@ -2322,6 +2341,7 @@ parse_text_node (GtkCssParser *parser,
  PangoGlyphString *glyphs = NULL;
  cairo_hint_style_t hint_style = CAIRO_HINT_STYLE_SLIGHT;
  cairo_antialias_t antialias = CAIRO_ANTIALIAS_GRAY;
+  cairo_hint_metrics_t hint_metrics = CAIRO_HINT_METRICS_OFF;
  PangoFont *hinted;
  const Declaration declarations[] = {
    { "font", parse_font, clear_font, &font },
@@ -2330,6 +2350,7 @@ parse_text_node (GtkCssParser *parser,
    { "glyphs", parse_glyphs, clear_glyphs, &glyphs },
    { "hint-style", parse_hint_style, NULL, &hint_style },
    { "antialias", parse_antialias, NULL, &antialias },
+    { "hint-metrics", parse_hint_metrics, NULL, &hint_metrics },
  };
  GskRenderNode *result;

@@ -2341,7 +2362,7 @@ parse_text_node (GtkCssParser *parser,
      g_assert (font);
    }

-  hinted = gsk_reload_font (font, 1.0, CAIRO_HINT_METRICS_OFF, hint_style, antialias);
+  hinted = gsk_reload_font (font, 1.0, hint_metrics, hint_style, antialias);
  g_object_unref (font);
  font = hinted;

@@ -3539,13 +3560,13 @@ append_texture_param (Printer    *p,
    case GDK_MEMORY_U8:
    case GDK_MEMORY_U16:
      bytes = gdk_texture_save_to_png_bytes (texture);
-      g_string_append (p->str, "url(\"data:image/png;base64,");
+      g_string_append (p->str, "url(\"data:image/png;base64,\\\n");
      break;

    case GDK_MEMORY_FLOAT16:
    case GDK_MEMORY_FLOAT32:
      bytes = gdk_texture_save_to_tiff_bytes (texture);
-      g_string_append (p->str, "url(\"data:image/tiff;base64,");
+      g_string_append (p->str, "url(\"data:image/tiff;base64,\\\n");
      break;

    default:
@@ -3604,7 +3625,7 @@ gsk_text_node_serialize_font (GskRenderNode *node,

    b64 = base64_encode_with_linebreaks ((const guchar *) data, len);

-    g_string_append (p->str, " url(\"data:font/ttf;base64,");
+    g_string_append (p->str, " url(\"data:font/ttf;base64,\\\n");
    append_escaping_newlines (p->str, b64);
    g_string_append (p->str, "\")");

@@ -3623,11 +3644,13 @@ gsk_text_node_serialize_font_options (GskRenderNode *node,
  cairo_font_options_t *options;
  cairo_hint_style_t hint_style;
  cairo_antialias_t antialias;
+  cairo_hint_metrics_t hint_metrics;

  options = cairo_font_options_create ();
  cairo_scaled_font_get_font_options (sf, options);
  hint_style = cairo_font_options_get_hint_style (options);
  antialias = cairo_font_options_get_antialias (options);
+  hint_metrics = cairo_font_options_get_hint_metrics (options);
  cairo_font_options_destroy (options);

  /* medium and full are identical in the absence of subpixel modes */
@@ -3643,6 +3666,12 @@ gsk_text_node_serialize_font_options (GskRenderNode *node,
   */
  if (antialias == CAIRO_ANTIALIAS_NONE)
    append_enum_param (p, "antialias", CAIRO_GOBJECT_TYPE_ANTIALIAS, antialias);
+
+  /* CAIRO_HINT_METRICS_ON is the only value we ever emit here, since off is the default,
+   * and we don't accept any other values.
+   */
+  if (hint_metrics == CAIRO_HINT_METRICS_ON)
+    append_enum_param (p, "hint-metrics", CAIRO_GOBJECT_TYPE_HINT_METRICS, CAIRO_HINT_METRICS_ON);
 }

 void
@@ -4414,7 +4443,7 @@ render_node_print (Printer       *p,
            cairo_surface_write_to_png_stream (surface, cairo_write_array, array);

            _indent (p);
-            g_string_append (p->str, "pixels: url(\"data:image/png;base64,");
+            g_string_append (p->str, "pixels: url(\"data:image/png;base64,\\\n");
            b64 = base64_encode_with_linebreaks (array->data, array->len);
            append_escaping_newlines (p->str, b64);
            g_free (b64);
@@ -4434,7 +4463,7 @@ render_node_print (Printer       *p,
                if (cairo_script_from_recording_surface (script, surface) == CAIRO_STATUS_SUCCESS)
                  {
                    _indent (p);
-                    g_string_append (p->str, "script: url(\"data:;base64,");
+                    g_string_append (p->str, "script: url(\"data:;base64,\\\n");
                    b64 = base64_encode_with_linebreaks (array->data, array->len);
                    append_escaping_newlines (p->str, b64);
                    g_free (b64);
@@ -184,10 +184,4 @@
        </signal>
 </interface>

-<interface name="org.a11y.atspi.Event.Focus">
-	<signal name="Focus"><arg direction="in" type="(suuv)"/>
-          <annotation name="org.qtproject.QtDBus.QtTypeName.In0" value="QSpiEvent"/>
-        </signal>
-</interface>
-
 </node>
@@ -720,6 +720,16 @@ handle_accessible_get_property (GDBusConnection       *connection,
    res = get_parent_context_ref (accessible);
  else if (g_strcmp0 (property_name, "ChildCount") == 0)
    res = g_variant_new_int32 (gtk_at_spi_context_get_child_count (self));
+  else if (g_strcmp0 (property_name, "HelpText"))
+    {
+      if (gtk_at_context_has_accessible_property (GTK_AT_CONTEXT (self), GTK_ACCESSIBLE_PROPERTY_HELP_TEXT))
+        {
+          GtkAccessibleValue *value = gtk_at_context_get_accessible_property (GTK_AT_CONTEXT (self), GTK_ACCESSIBLE_PROPERTY_HELP_TEXT);
+          res = g_variant_new_string (gtk_string_accessible_value_get (value));
+        }
+      else
+        res = g_variant_new_string ("");
+    }
  else
    g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
                 "Unknown property '%s'", property_name);
@@ -899,24 +909,6 @@ emit_children_changed (GtkAtSpiContext         *self,
                                    context_ref);
 }

-static void
-emit_focus (GtkAtSpiContext *self,
-            gboolean         focus_in)
-{
-  if (self->connection == NULL)
-    return;
-
-  if (focus_in)
-    g_dbus_connection_emit_signal (self->connection,
-                                   NULL,
-                                   self->context_path,
-                                   "org.a11y.atspi.Event.Focus",
-                                   "Focus",
-                                   g_variant_new ("(siiva{sv})",
-                                                  "", 0, 0, g_variant_new_string ("0"), NULL),
-                                   NULL);
-}
-
 static void
 emit_window_event (GtkAtSpiContext *self,
                   const char      *event_type)
@@ -1154,7 +1146,7 @@ gtk_at_spi_context_state_change (GtkATContext                *ctx,
    }

  if (changed_properties & GTK_ACCESSIBLE_PROPERTY_CHANGE_DESCRIPTION)
-  {
+    {
      char *label = gtk_at_context_get_description (GTK_AT_CONTEXT (self));
      GVariant *v = g_variant_new_take_string (label);
      emit_property_changed (self, "accessible-description", v);
@@ -1167,6 +1159,14 @@ gtk_at_spi_context_state_change (GtkATContext                *ctx,
                             "accessible-value",
                             g_variant_new_double (gtk_number_accessible_value_get (value)));
    }
+
+  if (changed_properties & GTK_ACCESSIBLE_PROPERTY_CHANGE_HELP_TEXT)
+    {
+      value = gtk_accessible_attribute_set_get_value (properties, GTK_ACCESSIBLE_PROPERTY_HELP_TEXT);
+      emit_property_changed (self,
+                             "accessible-help-text",
+                             g_variant_new_string (gtk_string_accessible_value_get (value)));
+    }
 }

 static void
@@ -1196,7 +1196,6 @@ gtk_at_spi_context_platform_change (GtkATContext                *ctx,
      gboolean state = gtk_accessible_get_platform_state (GTK_ACCESSIBLE (widget),
                                                          GTK_ACCESSIBLE_PLATFORM_STATE_FOCUSED);
      emit_state_changed (self, "focused", state);
-      emit_focus (self, state);
    }

  if (changed_platform & GTK_ACCESSIBLE_PLATFORM_CHANGE_ACTIVE)
@@ -97,7 +97,7 @@ gtk_accessible_role_to_atspi_role (GtkAccessibleRole role)
      return ATSPI_ROLE_FORM;

    case GTK_ACCESSIBLE_ROLE_GENERIC:
-      return ATSPI_ROLE_FILLER;
+      return ATSPI_ROLE_PANEL;

    case GTK_ACCESSIBLE_ROLE_GRID:
      return ATSPI_ROLE_TABLE;
@@ -106,7 +106,7 @@ gtk_accessible_role_to_atspi_role (GtkAccessibleRole role)
      return ATSPI_ROLE_TABLE_CELL;

    case GTK_ACCESSIBLE_ROLE_GROUP:
-      return ATSPI_ROLE_PANEL;
+      return ATSPI_ROLE_GROUPING;

    case GTK_ACCESSIBLE_ROLE_HEADING:
      return ATSPI_ROLE_HEADING;
@@ -26,24 +26,18 @@
 #include "gtkcsserror.h"
 #include "gtkcsslocationprivate.h"

+static void clear_ref (GtkCssVariableValueReference *ref);
+
+#define GDK_ARRAY_NAME gtk_css_parser_references
+#define GDK_ARRAY_TYPE_NAME GtkCssParserReferences
+#define GDK_ARRAY_ELEMENT_TYPE GtkCssVariableValueReference
+#define GDK_ARRAY_BY_VALUE 1
+#define GDK_ARRAY_NO_MEMSET 1
+#define GDK_ARRAY_FREE_FUNC clear_ref
+#include "gdk/gdkarrayimpl.c"
+
 typedef struct _GtkCssParserBlock GtkCssParserBlock;

-struct _GtkCssParser
-{
-  volatile int ref_count;
-
-  GtkCssTokenizer *tokenizer;
-  GFile *file;
-  GFile *directory;
-  GtkCssParserErrorFunc error_func;
-  gpointer user_data;
-  GDestroyNotify user_destroy;
-
-  GArray *blocks;
-  GtkCssLocation location;
-  GtkCssToken token;
-};
-
 struct _GtkCssParserBlock
 {
  GtkCssLocation start_location;
@@ -52,8 +46,97 @@ struct _GtkCssParserBlock
  GtkCssTokenType alternative_token;
 };

+#define GDK_ARRAY_NAME gtk_css_parser_blocks
+#define GDK_ARRAY_TYPE_NAME GtkCssParserBlocks
+#define GDK_ARRAY_ELEMENT_TYPE GtkCssParserBlock
+#define GDK_ARRAY_PREALLOC 32
+#define GDK_ARRAY_NO_MEMSET 1
+#include "gdk/gdkarrayimpl.c"
+
+static inline GtkCssParserBlock *
+gtk_css_parser_blocks_get_last (GtkCssParserBlocks *blocks)
+{
+  return gtk_css_parser_blocks_index (blocks, gtk_css_parser_blocks_get_size (blocks) - 1);
+}
+
+static inline void
+gtk_css_parser_blocks_drop_last (GtkCssParserBlocks *blocks)
+{
+  gtk_css_parser_blocks_set_size (blocks, gtk_css_parser_blocks_get_size (blocks) - 1);
+}
+
+typedef struct _GtkCssTokenizerData GtkCssTokenizerData;
+
+struct _GtkCssTokenizerData
+{
+  GtkCssTokenizer *tokenizer;
+  char *var_name;
+  GtkCssVariableValue *variable;
+};
+
+static void
+gtk_css_tokenizer_data_clear (gpointer data)
+{
+  GtkCssTokenizerData *td = data;
+
+  gtk_css_tokenizer_unref (td->tokenizer);
+  if (td->var_name)
+    g_free (td->var_name);
+  if (td->variable)
+    gtk_css_variable_value_unref (td->variable);
+}
+
+#define GDK_ARRAY_NAME gtk_css_tokenizers
+#define GDK_ARRAY_TYPE_NAME GtkCssTokenizers
+#define GDK_ARRAY_ELEMENT_TYPE GtkCssTokenizerData
+#define GDK_ARRAY_FREE_FUNC gtk_css_tokenizer_data_clear
+#define GDK_ARRAY_BY_VALUE 1
+#define GDK_ARRAY_PREALLOC 16
+#define GDK_ARRAY_NO_MEMSET 1
+#include "gdk/gdkarrayimpl.c"
+
+static inline GtkCssTokenizerData *
+gtk_css_tokenizers_get_last (GtkCssTokenizers *tokenizers)
+{
+  return gtk_css_tokenizers_index (tokenizers, gtk_css_tokenizers_get_size (tokenizers) - 1);
+}
+
+static inline void
+gtk_css_tokenizers_drop_last (GtkCssTokenizers *tokenizers)
+{
+  gtk_css_tokenizers_set_size (tokenizers, gtk_css_tokenizers_get_size (tokenizers) - 1);
+}
+
+struct _GtkCssParser
+{
+  volatile int ref_count;
+
+  GtkCssTokenizers tokenizers;
+  GFile *file;
+  GFile *directory;
+  GtkCssParserErrorFunc error_func;
+  gpointer user_data;
+  GDestroyNotify user_destroy;
+
+  GtkCssParserBlocks blocks;
+  GtkCssLocation location;
+  GtkCssToken token;
+
+  GtkCssVariableValue **refs;
+  gsize n_refs;
+  gsize next_ref;
+  gboolean var_fallback;
+};
+
+static inline GtkCssTokenizer *
+get_tokenizer (GtkCssParser *self)
+{
+  return gtk_css_tokenizers_get_last (&self->tokenizers)->tokenizer;
+}
+
 static GtkCssParser *
 gtk_css_parser_new (GtkCssTokenizer       *tokenizer,
+                    GtkCssVariableValue   *value,
                    GFile                 *file,
                    GtkCssParserErrorFunc  error_func,
                    gpointer               user_data,
@@ -64,17 +147,21 @@ gtk_css_parser_new (GtkCssTokenizer       *tokenizer,
  self = g_new0 (GtkCssParser, 1);

  self->ref_count = 1;
-  self->tokenizer = gtk_css_tokenizer_ref (tokenizer);
+
+  gtk_css_tokenizers_init (&self->tokenizers);
+  gtk_css_tokenizers_append (&self->tokenizers,
+                             &(GtkCssTokenizerData) {
+                               gtk_css_tokenizer_ref (tokenizer),
+                               NULL,
+                               value ? gtk_css_variable_value_ref (value) : NULL });
+
  if (file)
-    {
-      self->file = g_object_ref (file);
-      self->directory = g_file_get_parent (file);
-    }
+    self->file = g_object_ref (file);

  self->error_func = error_func;
  self->user_data = user_data;
  self->user_destroy = user_destroy;
-  self->blocks = g_array_new (FALSE, FALSE, sizeof (GtkCssParserBlock));
+  gtk_css_parser_blocks_init (&self->blocks);

  return self;
 }
@@ -109,26 +196,50 @@ gtk_css_parser_new_for_bytes (GBytes                *bytes,
 {
  GtkCssTokenizer *tokenizer;
  GtkCssParser *result;
-  
+
  tokenizer = gtk_css_tokenizer_new (bytes);
-  result = gtk_css_parser_new (tokenizer, file, error_func, user_data, user_destroy);
+  result = gtk_css_parser_new (tokenizer, NULL, file, error_func, user_data, user_destroy);
  gtk_css_tokenizer_unref (tokenizer);

  return result;
 }

+GtkCssParser *
+gtk_css_parser_new_for_token_stream (GtkCssVariableValue    *value,
+                                     GFile                  *file,
+                                     GtkCssVariableValue   **refs,
+                                     gsize                   n_refs,
+                                     GtkCssParserErrorFunc   error_func,
+                                     gpointer                user_data,
+                                     GDestroyNotify          user_destroy)
+{
+  GtkCssTokenizer *tokenizer;
+  GtkCssParser *result;
+
+  tokenizer = gtk_css_tokenizer_new_for_range (value->bytes, value->offset,
+                                               value->end_offset - value->offset);
+  result = gtk_css_parser_new (tokenizer, value, file, error_func, user_data, user_destroy);
+  gtk_css_tokenizer_unref (tokenizer);
+
+  result->refs = refs;
+  result->n_refs = n_refs;
+  result->next_ref = 0;
+
+  return result;
+}
+
 static void
 gtk_css_parser_finalize (GtkCssParser *self)
 {
  if (self->user_destroy)
    self->user_destroy (self->user_data);

-  g_clear_pointer (&self->tokenizer, gtk_css_tokenizer_unref);
+  gtk_css_tokenizers_clear (&self->tokenizers);
  g_clear_object (&self->file);
  g_clear_object (&self->directory);
-  if (self->blocks->len)
-    g_critical ("Finalizing CSS parser with %u remaining blocks", self->blocks->len);
-  g_array_free (self->blocks, TRUE);
+  if (gtk_css_parser_blocks_get_size (&self->blocks) > 0)
+    g_critical ("Finalizing CSS parser with %lu remaining blocks", gtk_css_parser_blocks_get_size (&self->blocks));
+  gtk_css_parser_blocks_clear (&self->blocks);

  g_free (self);
 }
@@ -163,6 +274,12 @@ gtk_css_parser_get_file (GtkCssParser *self)
  return self->file;
 }

+GBytes *
+gtk_css_parser_get_bytes (GtkCssParser *self)
+{
+  return gtk_css_tokenizer_get_bytes (gtk_css_tokenizers_get (&self->tokenizers, 0)->tokenizer);
+}
+
 /**
 * gtk_css_parser_resolve_url:
 * @self: a `GtkCssParser`
@@ -188,7 +305,12 @@ gtk_css_parser_resolve_url (GtkCssParser *self,
    }

  if (self->directory == NULL)
-    return NULL;
+    {
+      if (self->file)
+        self->directory = g_file_get_parent (self->file);
+      if (self->directory == NULL)
+        return NULL;
+    }

  return g_file_resolve_relative_path (self->directory, url);
 }
@@ -239,7 +361,7 @@ gtk_css_parser_get_start_location (GtkCssParser *self)
 const GtkCssLocation *
 gtk_css_parser_get_end_location (GtkCssParser *self)
 {
-  return gtk_css_tokenizer_get_location (self->tokenizer);
+  return gtk_css_tokenizer_get_location (get_tokenizer (self));
 }

 /**
@@ -259,13 +381,13 @@ gtk_css_parser_get_block_location (GtkCssParser *self)
 {
  const GtkCssParserBlock *block;

-  if (self->blocks->len == 0)
+  if (gtk_css_parser_blocks_get_size (&self->blocks) == 0)
    {
      static const GtkCssLocation start_of_document = { 0, };
      return &start_of_document;
    }

-  block = &g_array_index (self->blocks, GtkCssParserBlock, self->blocks->len - 1);
+  block = gtk_css_parser_blocks_get_last (&self->blocks);
  return &block->start_location;
 }

@@ -273,12 +395,14 @@ static void
 gtk_css_parser_ensure_token (GtkCssParser *self)
 {
  GError *error = NULL;
+  GtkCssTokenizer *tokenizer;

  if (!gtk_css_token_is (&self->token, GTK_CSS_TOKEN_EOF))
    return;

-  self->location = *gtk_css_tokenizer_get_location (self->tokenizer);
-  if (!gtk_css_tokenizer_read_token (self->tokenizer, &self->token, &error))
+  tokenizer = get_tokenizer (self);
+  self->location = *gtk_css_tokenizer_get_location (tokenizer);
+  if (!gtk_css_tokenizer_read_token (tokenizer, &self->token, &error))
    {
      /* We ignore the error here, because the resulting token will
       * likely already trigger an error in the parsing code and
@@ -286,6 +410,49 @@ gtk_css_parser_ensure_token (GtkCssParser *self)
       */
      g_clear_error (&error);
    }
+
+  if (gtk_css_tokenizers_get_size (&self->tokenizers) > 1 && gtk_css_token_is (&self->token, GTK_CSS_TOKEN_EOF))
+    {
+      gtk_css_tokenizers_drop_last (&self->tokenizers);
+      gtk_css_parser_ensure_token (self);
+      return;
+    }
+
+  /* Resolve var(--name): skip it and insert the resolved reference instead */
+  if (self->n_refs > 0 && gtk_css_token_is_function (&self->token, "var") && self->var_fallback == 0)
+    {
+      GtkCssVariableValue *ref;
+      GtkCssTokenizer *ref_tokenizer;
+
+      gtk_css_parser_start_block (self);
+
+      g_assert (gtk_css_parser_has_token (self, GTK_CSS_TOKEN_IDENT));
+
+      char *var_name = gtk_css_parser_consume_ident (self);
+      g_assert (var_name[0] == '-' && var_name[1] == '-');
+
+      /* If we encounter var() in a fallback when we can already resolve the
+       * actual variable, skip it */
+      self->var_fallback++;
+      gtk_css_parser_skip (self);
+      gtk_css_parser_end_block (self);
+      self->var_fallback--;
+
+      g_assert (self->next_ref < self->n_refs);
+
+      ref = self->refs[self->next_ref++];
+      ref_tokenizer = gtk_css_tokenizer_new_for_range (ref->bytes, ref->offset,
+                                                       ref->end_offset - ref->offset);
+      gtk_css_tokenizers_append (&self->tokenizers,
+                                 &(GtkCssTokenizerData) {
+                                   ref_tokenizer,
+                                   g_strdup (var_name),
+                                   gtk_css_variable_value_ref (ref)
+                                 });
+
+      gtk_css_parser_ensure_token (self);
+      g_free (var_name);
+    }
 }

 const GtkCssToken *
@@ -295,9 +462,9 @@ gtk_css_parser_peek_token (GtkCssParser *self)

  gtk_css_parser_ensure_token (self);

-  if (self->blocks->len)
+  if (gtk_css_parser_blocks_get_size (&self->blocks) > 0)
    {
-      const GtkCssParserBlock *block = &g_array_index (self->blocks, GtkCssParserBlock, self->blocks->len - 1);
+      const GtkCssParserBlock *block = gtk_css_parser_blocks_get_last (&self->blocks);
      if (gtk_css_token_is (&self->token, block->end_token) ||
          gtk_css_token_is (&self->token, block->inherited_end_token) ||
          gtk_css_token_is (&self->token, block->alternative_token))
@@ -352,7 +519,7 @@ gtk_css_parser_start_block (GtkCssParser *self)
  block.inherited_end_token = GTK_CSS_TOKEN_EOF;
  block.alternative_token = GTK_CSS_TOKEN_EOF;
  block.start_location = self->location;
-  g_array_append_val (self->blocks, block);
+  gtk_css_parser_blocks_append (&self->blocks, block);

  gtk_css_token_clear (&self->token);
 }
@@ -364,13 +531,13 @@ gtk_css_parser_start_semicolon_block (GtkCssParser    *self,
  GtkCssParserBlock block;

  block.end_token = GTK_CSS_TOKEN_SEMICOLON;
-  if (self->blocks->len)
-    block.inherited_end_token = g_array_index (self->blocks, GtkCssParserBlock, self->blocks->len - 1).end_token;
+  if (gtk_css_parser_blocks_get_size (&self->blocks) > 0)
+    block.inherited_end_token = gtk_css_parser_blocks_get_last (&self->blocks)->end_token;
  else
    block.inherited_end_token = GTK_CSS_TOKEN_EOF;
  block.alternative_token = alternative_token;
  block.start_location = self->location;
-  g_array_append_val (self->blocks, block);
+  gtk_css_parser_blocks_append (&self->blocks, block);
 }

 void
@@ -378,9 +545,9 @@ gtk_css_parser_end_block_prelude (GtkCssParser *self)
 {
  GtkCssParserBlock *block;

-  g_return_if_fail (self->blocks->len > 0);
+  g_return_if_fail (gtk_css_parser_blocks_get_size (&self->blocks) > 0);

-  block = &g_array_index (self->blocks, GtkCssParserBlock, self->blocks->len - 1);
+  block = gtk_css_parser_blocks_get_last (&self->blocks);

  if (block->alternative_token == GTK_CSS_TOKEN_EOF)
    return;
@@ -405,11 +572,11 @@ gtk_css_parser_end_block (GtkCssParser *self)
 {
  GtkCssParserBlock *block;

-  g_return_if_fail (self->blocks->len > 0);
+  g_return_if_fail (gtk_css_parser_blocks_get_size (&self->blocks) > 0);

  gtk_css_parser_skip_until (self, GTK_CSS_TOKEN_EOF);

-  block = &g_array_index (self->blocks, GtkCssParserBlock, self->blocks->len - 1);
+  block = gtk_css_parser_blocks_get_last (&self->blocks);

  if (gtk_css_token_is (&self->token, GTK_CSS_TOKEN_EOF))
    {
@@ -418,7 +585,7 @@ gtk_css_parser_end_block (GtkCssParser *self)
                           gtk_css_parser_get_block_location (self),
                           gtk_css_parser_get_start_location (self),
                           "Unterminated block at end of document");
-      g_array_set_size (self->blocks, self->blocks->len - 1);
+      gtk_css_parser_blocks_drop_last (&self->blocks);
    }
  else if (gtk_css_token_is (&self->token, block->inherited_end_token))
    {
@@ -428,11 +595,11 @@ gtk_css_parser_end_block (GtkCssParser *self)
                           gtk_css_parser_get_block_location (self),
                           gtk_css_parser_get_start_location (self),
                           "Expected ';' at end of block");
-      g_array_set_size (self->blocks, self->blocks->len - 1);
+      gtk_css_parser_blocks_drop_last (&self->blocks);
    }
  else
    {
-      g_array_set_size (self->blocks, self->blocks->len - 1);
+      gtk_css_parser_blocks_drop_last (&self->blocks);
      if (gtk_css_token_is_preserved (&self->token, NULL))
        {
          gtk_css_token_clear (&self->token);
@@ -502,6 +669,19 @@ gtk_css_parser_skip_until (GtkCssParser    *self,
    }
 }

+void
+gtk_css_parser_skip_whitespace (GtkCssParser *self)
+{
+  const GtkCssToken *token;
+
+  for (token = gtk_css_parser_peek_token (self);
+       gtk_css_token_is (token, GTK_CSS_TOKEN_WHITESPACE);
+       token = gtk_css_parser_peek_token (self))
+    {
+      gtk_css_parser_consume_token (self);
+    }
+}
+
 void
 gtk_css_parser_emit_error (GtkCssParser         *self,
                           const GtkCssLocation *start,
@@ -1112,3 +1292,319 @@ gtk_css_parser_consume_any (GtkCssParser            *parser,

  return result;
 }
+
+gboolean
+gtk_css_parser_has_references (GtkCssParser *self)
+{
+  GtkCssTokenizer *tokenizer = get_tokenizer (self);
+  gboolean ret = FALSE;
+  int inner_blocks = 0, i;
+
+  gtk_css_tokenizer_save (tokenizer);
+
+  do {
+      const GtkCssToken *token;
+
+      token = gtk_css_parser_get_token (self);
+
+      if (inner_blocks == 0)
+        {
+          if (gtk_css_token_is (token, GTK_CSS_TOKEN_EOF))
+            break;
+
+          if (gtk_css_token_is (token, GTK_CSS_TOKEN_CLOSE_PARENS) ||
+              gtk_css_token_is (token, GTK_CSS_TOKEN_CLOSE_SQUARE))
+            {
+              goto error;
+            }
+        }
+
+      if (gtk_css_token_is_preserved (token, NULL))
+        {
+          if (inner_blocks > 0 && gtk_css_token_is (token, GTK_CSS_TOKEN_EOF))
+            {
+              gtk_css_parser_end_block (self);
+              inner_blocks--;
+            }
+          else
+            {
+              gtk_css_parser_consume_token (self);
+            }
+        }
+      else
+        {
+          gboolean is_var = gtk_css_token_is_function (token, "var");
+
+          inner_blocks++;
+          gtk_css_parser_start_block (self);
+
+          if (!ret && is_var)
+            {
+              token = gtk_css_parser_get_token (self);
+
+              if (gtk_css_token_is (token, GTK_CSS_TOKEN_IDENT))
+                {
+                  const char *var_name = gtk_css_token_get_string (token);
+
+                  if (var_name[0] != '-' || var_name[1] != '-')
+                    goto error;
+
+                  gtk_css_parser_consume_token (self);
+
+                  if (!gtk_css_parser_has_token (self, GTK_CSS_TOKEN_EOF) &&
+                      !gtk_css_parser_has_token (self, GTK_CSS_TOKEN_COMMA))
+                    {
+                      goto error;
+                    }
+
+                  ret = TRUE;
+                }
+            }
+        }
+    }
+  while (!gtk_css_parser_has_token (self, GTK_CSS_TOKEN_SEMICOLON) &&
+         !gtk_css_parser_has_token (self, GTK_CSS_TOKEN_CLOSE_CURLY));
+
+  if (inner_blocks > 0)
+    goto error;
+
+  g_assert (tokenizer == get_tokenizer (self));
+
+  gtk_css_tokenizer_restore (tokenizer);
+  self->location = *gtk_css_tokenizer_get_location (tokenizer);
+  gtk_css_tokenizer_read_token (tokenizer, &self->token, NULL);
+
+  return ret;
+
+error:
+  for (i = 0; i < inner_blocks; i++)
+    gtk_css_parser_end_block (self);
+
+  g_assert (tokenizer == get_tokenizer (self));
+
+  gtk_css_tokenizer_restore (tokenizer);
+  self->location = *gtk_css_tokenizer_get_location (tokenizer);
+  gtk_css_tokenizer_read_token (tokenizer, &self->token, NULL);
+
+  return FALSE;
+}
+
+static void
+clear_ref (GtkCssVariableValueReference *ref)
+{
+  g_free (ref->name);
+  if (ref->fallback)
+    gtk_css_variable_value_unref (ref->fallback);
+}
+
+#define GDK_ARRAY_NAME gtk_css_parser_references
+#define GDK_ARRAY_TYPE_NAME GtkCssParserReferences
+#define GDK_ARRAY_ELEMENT_TYPE GtkCssVariableValueReference
+
+GtkCssVariableValue *
+gtk_css_parser_parse_value_into_token_stream (GtkCssParser *self)
+{
+  GBytes *bytes = gtk_css_tokenizer_get_bytes (get_tokenizer (self));
+  const GtkCssToken *token;
+  gsize offset;
+  gsize length = 0;
+  GtkCssParserReferences refs;
+  int inner_blocks = 0, i;
+  gboolean is_initial = FALSE;
+
+  for (token = gtk_css_parser_peek_token (self);
+       gtk_css_token_is (token, GTK_CSS_TOKEN_WHITESPACE);
+       token = gtk_css_parser_peek_token (self))
+    {
+      gtk_css_parser_consume_token (self);
+    }
+
+  gtk_css_parser_references_init (&refs);
+
+  offset = self->location.bytes;
+
+  do {
+      token = gtk_css_parser_get_token (self);
+
+      if (length == 0 && gtk_css_token_is_ident (token, "initial"))
+        is_initial = TRUE;
+
+      if (gtk_css_token_is (token, GTK_CSS_TOKEN_BAD_STRING) ||
+          gtk_css_token_is (token, GTK_CSS_TOKEN_BAD_URL))
+        {
+          gtk_css_parser_error_syntax (self, "Invalid property value");
+          goto error;
+        }
+
+      if (inner_blocks == 0)
+        {
+          if (gtk_css_token_is (token, GTK_CSS_TOKEN_EOF))
+            break;
+
+          if (gtk_css_token_is (token, GTK_CSS_TOKEN_CLOSE_PARENS) ||
+              gtk_css_token_is (token, GTK_CSS_TOKEN_CLOSE_SQUARE))
+            {
+              gtk_css_parser_error_syntax (self, "Invalid property value");
+              goto error;
+            }
+        }
+
+      if (gtk_css_token_is_preserved (token, NULL))
+        {
+          if (inner_blocks > 0 && gtk_css_token_is (token, GTK_CSS_TOKEN_EOF))
+            {
+              length++;
+              gtk_css_parser_end_block (self);
+
+              inner_blocks--;
+            }
+          else
+            {
+              length++;
+              gtk_css_parser_consume_token (self);
+            }
+        }
+      else
+        {
+          gboolean is_var = gtk_css_token_is_function (token, "var");
+
+          length++;
+          inner_blocks++;
+
+          gtk_css_parser_start_block (self);
+
+          if (is_var)
+            {
+              token = gtk_css_parser_get_token (self);
+
+              if (gtk_css_token_is (token, GTK_CSS_TOKEN_IDENT))
+                {
+                  GtkCssVariableValueReference ref;
+                  char *var_name = g_strdup (gtk_css_token_get_string (token));
+
+                  if (var_name[0] != '-' || var_name[1] != '-')
+                    {
+                      gtk_css_parser_error_value (self, "Invalid variable name: %s", var_name);
+                      g_free (var_name);
+                      goto error;
+                    }
+
+                  length++;
+                  gtk_css_parser_consume_token (self);
+
+                  if (!gtk_css_parser_has_token (self, GTK_CSS_TOKEN_EOF) &&
+                      !gtk_css_parser_has_token (self, GTK_CSS_TOKEN_COMMA))
+                    {
+                      gtk_css_parser_error_syntax (self, "Invalid property value");
+                      g_free (var_name);
+                      goto error;
+                    }
+
+                  ref.name = var_name;
+
+                  if (gtk_css_parser_has_token (self, GTK_CSS_TOKEN_EOF))
+                    {
+                      ref.length = 3;
+                      ref.fallback = NULL;
+                    }
+                  else
+                    {
+                      length++;
+                      gtk_css_parser_consume_token (self);
+
+                      ref.fallback = gtk_css_parser_parse_value_into_token_stream (self);
+
+                      if (ref.fallback == NULL)
+                        {
+                          gtk_css_parser_error_value (self, "Invalid fallback for: %s", var_name);
+                          g_free (var_name);
+                          goto error;
+                        }
+
+                      ref.length = 4 + ref.fallback->length;
+                      length += ref.fallback->length;
+                    }
+
+                  gtk_css_parser_references_append (&refs, &ref);
+                }
+            }
+        }
+    }
+  while (!gtk_css_parser_has_token (self, GTK_CSS_TOKEN_SEMICOLON) &&
+         !gtk_css_parser_has_token (self, GTK_CSS_TOKEN_CLOSE_CURLY));
+
+  if (inner_blocks > 0)
+    {
+      gtk_css_parser_error_syntax (self, "Invalid property value");
+      goto error;
+    }
+
+  if (is_initial && length == 1)
+    {
+      gtk_css_parser_references_clear (&refs);
+
+      return gtk_css_variable_value_new_initial (bytes,
+                                                 offset,
+                                                 self->location.bytes);
+    }
+  else
+    {
+      GtkCssVariableValueReference *out_refs;
+      gsize n_refs;
+
+      n_refs = gtk_css_parser_references_get_size (&refs);
+      out_refs = gtk_css_parser_references_steal (&refs);
+
+      return gtk_css_variable_value_new (bytes,
+                                         offset,
+                                         self->location.bytes,
+                                         length,
+                                         out_refs,
+                                         n_refs);
+    }
+
+error:
+  for (i = 0; i < inner_blocks; i++)
+    gtk_css_parser_end_block (self);
+
+  gtk_css_parser_references_clear (&refs);
+
+  return NULL;
+}
+
+void
+gtk_css_parser_get_expanding_variables (GtkCssParser          *self,
+                                        GtkCssVariableValue ***variables,
+                                        char                ***variable_names,
+                                        gsize                 *n_variables)
+{
+  gsize len = gtk_css_tokenizers_get_size (&self->tokenizers);
+  GtkCssVariableValue **vars = NULL;
+  char **names = NULL;
+  gsize n;
+
+  if (variables)
+    vars = g_new0 (GtkCssVariableValue *, len + 1);
+  if (variable_names)
+    names = g_new0 (char *, len + 1);
+
+  n = 0;
+  for (gsize i = 0; i < gtk_css_tokenizers_get_size (&self->tokenizers); i++)
+    {
+      GtkCssTokenizerData *data = gtk_css_tokenizers_index (&self->tokenizers, i);
+      if (variables && data->variable)
+        vars[n] = gtk_css_variable_value_ref (data->variable);
+      if (variable_names)
+        names[n] = g_strdup (data->var_name);
+      n++;
+    }
+
+  if (variables)
+    *variables = vars;
+
+  if (variable_names)
+    *variable_names = names;
+
+  if (n_variables)
+    *n_variables = n;
+}
@@ -22,6 +22,7 @@

 #include "gtkcssenums.h"
 #include "gtkcsstokenizerprivate.h"
+#include "gtkcssvariablevalueprivate.h"

 #include <gio/gio.h>

@@ -58,10 +59,18 @@ GtkCssParser *          gtk_css_parser_new_for_bytes            (GBytes
                                                                 GtkCssParserErrorFunc           error_func,
                                                                 gpointer                        user_data,
                                                                 GDestroyNotify                  user_destroy);
+GtkCssParser *          gtk_css_parser_new_for_token_stream     (GtkCssVariableValue            *value,
+                                                                 GFile                          *file,
+                                                                 GtkCssVariableValue           **refs,
+                                                                 gsize                           n_refs,
+                                                                 GtkCssParserErrorFunc           error_func,
+                                                                 gpointer                        user_data,
+                                                                 GDestroyNotify                  user_destroy);
 GtkCssParser *          gtk_css_parser_ref                      (GtkCssParser                   *self);
 void                    gtk_css_parser_unref                    (GtkCssParser                   *self);

 GFile *                 gtk_css_parser_get_file                 (GtkCssParser                   *self) G_GNUC_PURE;
+GBytes *                gtk_css_parser_get_bytes                (GtkCssParser                   *self) G_GNUC_PURE;
 GFile *                 gtk_css_parser_resolve_url              (GtkCssParser                   *self,
                                                                 const char                     *url);

@@ -81,6 +90,7 @@ void                    gtk_css_parser_end_block                (GtkCssParser
 void                    gtk_css_parser_skip                     (GtkCssParser                   *self);
 void                    gtk_css_parser_skip_until               (GtkCssParser                   *self,
                                                                 GtkCssTokenType                 token_type);
+void                    gtk_css_parser_skip_whitespace          (GtkCssParser                   *self);

 void                    gtk_css_parser_emit_error               (GtkCssParser                   *self,
                                                                 const GtkCssLocation           *start,
@@ -150,5 +160,14 @@ gsize                   gtk_css_parser_consume_any              (GtkCssParser
                                                                 gsize                           n_options,
                                                                 gpointer                        user_data);

+gboolean                gtk_css_parser_has_references           (GtkCssParser                   *parser);
+
+GtkCssVariableValue *   gtk_css_parser_parse_value_into_token_stream (GtkCssParser              *parser);
+
+void                    gtk_css_parser_get_expanding_variables (GtkCssParser              *parser,
+                                                                GtkCssVariableValue     ***variables,
+                                                                char                    ***names,
+                                                                gsize                     *n_variables);
+
 G_END_DECLS

@@ -26,6 +26,7 @@ struct _GtkCssSection
  int                 ref_count;
  GtkCssSection      *parent;
  GFile              *file;
+  GBytes             *bytes;
  GtkCssLocation      start_location;
  GtkCssLocation      end_location;   /* end location if parser is %NULL */
 };
@@ -48,6 +49,15 @@ GtkCssSection *
 gtk_css_section_new (GFile                *file,
                     const GtkCssLocation *start,
                     const GtkCssLocation *end)
+{
+  return gtk_css_section_new_with_bytes (file, NULL,start, end);
+}
+
+GtkCssSection *
+gtk_css_section_new_with_bytes (GFile  *file,
+                                GBytes *bytes,
+                                const GtkCssLocation *start,
+                                const GtkCssLocation *end)
 {
  GtkCssSection *result;

@@ -60,6 +70,8 @@ gtk_css_section_new (GFile                *file,
  result->ref_count = 1;
  if (file)
    result->file = g_object_ref (file);
+  if (bytes)
+    result->bytes = g_bytes_ref (bytes);
  result->start_location = *start;
  result->end_location = *end;

@@ -104,6 +116,8 @@ gtk_css_section_unref (GtkCssSection *section)
    gtk_css_section_unref (section->parent);
  if (section->file)
    g_object_unref (section->file);
+  if (section->bytes)
+    g_bytes_unref (section->bytes);

  g_free (section);
 }
@@ -151,6 +165,14 @@ gtk_css_section_get_file (const GtkCssSection *section)
  return section->file;
 }

+GBytes *
+gtk_css_section_get_bytes (const GtkCssSection *section)
+{
+  g_return_val_if_fail (section != NULL, NULL);
+
+  return section->bytes;
+}
+
 /**
 * gtk_css_section_get_start_location:
 * @section: the section
@@ -46,6 +46,11 @@ GDK_AVAILABLE_IN_ALL
 GtkCssSection *    gtk_css_section_new                 (GFile                *file,
                                                        const GtkCssLocation *start,
                                                        const GtkCssLocation *end);
+GDK_AVAILABLE_IN_4_16
+GtkCssSection *    gtk_css_section_new_with_bytes      (GFile                *file,
+                                                        GBytes               *bytes,
+                                                        const GtkCssLocation *start,
+                                                        const GtkCssLocation *end);
 GDK_AVAILABLE_IN_ALL
 GtkCssSection *    gtk_css_section_ref                 (GtkCssSection        *section);
 GDK_AVAILABLE_IN_ALL
@@ -61,6 +66,8 @@ GDK_AVAILABLE_IN_ALL
 GtkCssSection *    gtk_css_section_get_parent          (const GtkCssSection  *section);
 GDK_AVAILABLE_IN_ALL
 GFile *            gtk_css_section_get_file            (const GtkCssSection  *section);
+GDK_AVAILABLE_IN_4_16
+GBytes *           gtk_css_section_get_bytes           (const GtkCssSection  *section);
 GDK_AVAILABLE_IN_ALL
 const GtkCssLocation *
                   gtk_css_section_get_start_location  (const GtkCssSection  *section);
@@ -36,6 +36,9 @@ struct _GtkCssTokenizer
  const char            *end;

  GtkCssLocation         position;
+
+  GtkCssLocation         saved_position;
+  const char            *saved_data;
 };

 void
@@ -568,6 +571,14 @@ gtk_css_token_init_dimension (GtkCssToken     *token,

 GtkCssTokenizer *
 gtk_css_tokenizer_new (GBytes *bytes)
+{
+  return gtk_css_tokenizer_new_for_range (bytes, 0, g_bytes_get_size (bytes));
+}
+
+GtkCssTokenizer *
+gtk_css_tokenizer_new_for_range (GBytes *bytes,
+                                 gsize   offset,
+                                 gsize   length)
 {
  GtkCssTokenizer *tokenizer;

@@ -576,8 +587,8 @@ gtk_css_tokenizer_new (GBytes *bytes)
  tokenizer->bytes = g_bytes_ref (bytes);
  tokenizer->name_buffer = g_string_new (NULL);

-  tokenizer->data = g_bytes_get_data (bytes, NULL);
-  tokenizer->end = tokenizer->data + g_bytes_get_size (bytes);
+  tokenizer->data = g_bytes_get_region (bytes, 1, offset, length);
+  tokenizer->end = tokenizer->data + length;

  gtk_css_location_init (&tokenizer->position);

@@ -604,6 +615,12 @@ gtk_css_tokenizer_unref (GtkCssTokenizer *tokenizer)
  g_free (tokenizer);
 }

+GBytes *
+gtk_css_tokenizer_get_bytes (GtkCssTokenizer *tokenizer)
+{
+  return tokenizer->bytes;
+}
+
 const GtkCssLocation *
 gtk_css_tokenizer_get_location (GtkCssTokenizer *tokenizer)
 {
@@ -1020,7 +1037,7 @@ gtk_css_tokenizer_read_ident_like (GtkCssTokenizer  *tokenizer,
 {
  gtk_css_tokenizer_read_name (tokenizer);

-  if (*tokenizer->data == '(')
+  if (gtk_css_tokenizer_remaining (tokenizer) > 0 && *tokenizer->data == '(')
    {
      gtk_css_tokenizer_consume_ascii (tokenizer);
      if (g_ascii_strcasecmp (tokenizer->name_buffer->str, "url") == 0)
@@ -1484,3 +1501,23 @@ gtk_css_tokenizer_read_token (GtkCssTokenizer  *tokenizer,
    }
 }

+void
+gtk_css_tokenizer_save (GtkCssTokenizer *tokenizer)
+{
+  g_assert (!tokenizer->saved_data);
+
+  tokenizer->saved_position = tokenizer->position;
+  tokenizer->saved_data = tokenizer->data;
+}
+
+void
+gtk_css_tokenizer_restore (GtkCssTokenizer *tokenizer)
+{
+  g_assert (tokenizer->saved_data);
+
+  tokenizer->position = tokenizer->saved_position;
+  tokenizer->data = tokenizer->saved_data;
+
+  gtk_css_location_init (&tokenizer->saved_position);
+  tokenizer->saved_data = NULL;
+}
@@ -138,15 +138,22 @@ void                    gtk_css_token_print                     (const GtkCssTok
 char *                  gtk_css_token_to_string                 (const GtkCssToken      *token);

 GtkCssTokenizer *       gtk_css_tokenizer_new                   (GBytes                 *bytes);
+GtkCssTokenizer *       gtk_css_tokenizer_new_for_range         (GBytes                 *bytes,
+                                                                 gsize                   offset,
+                                                                 gsize                   length);

 GtkCssTokenizer *       gtk_css_tokenizer_ref                   (GtkCssTokenizer        *tokenizer);
 void                    gtk_css_tokenizer_unref                 (GtkCssTokenizer        *tokenizer);

+GBytes *                gtk_css_tokenizer_get_bytes             (GtkCssTokenizer        *tokenizer);
 const GtkCssLocation *  gtk_css_tokenizer_get_location          (GtkCssTokenizer        *tokenizer) G_GNUC_CONST;

 gboolean                gtk_css_tokenizer_read_token            (GtkCssTokenizer        *tokenizer,
                                                                 GtkCssToken            *token,
                                                                 GError                **error);

+void                     gtk_css_tokenizer_save                 (GtkCssTokenizer        *tokenizer);
+void                     gtk_css_tokenizer_restore              (GtkCssTokenizer        *tokenizer);
+
 G_END_DECLS

@@ -0,0 +1,158 @@
+/*
+ * Copyright (C) 2023 GNOME Foundation Inc.
+ *
+ * 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 2.1 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/>.
+ *
+ * Authors: Alice Mikhaylenko <alicem@gnome.org>
+ */
+
+#include "gtkcssvariablevalueprivate.h"
+
+GtkCssVariableValue *
+gtk_css_variable_value_new (GBytes                       *bytes,
+                            gsize                         offset,
+                            gsize                         end_offset,
+                            gsize                         length,
+                            GtkCssVariableValueReference *references,
+                            gsize                         n_references)
+{
+  GtkCssVariableValue *self = g_new0 (GtkCssVariableValue, 1);
+
+  self->ref_count = 1;
+
+  self->bytes = g_bytes_ref (bytes);
+  self->offset = offset;
+  self->end_offset = end_offset;
+  self->length = length;
+
+  self->references = references;
+  self->n_references = n_references;
+
+  return self;
+}
+
+GtkCssVariableValue *
+gtk_css_variable_value_new_initial (GBytes *bytes,
+                                    gsize   offset,
+                                    gsize   end_offset)
+{
+  GtkCssVariableValue *self = gtk_css_variable_value_new (bytes, offset, end_offset, 1, NULL, 0);
+
+  self->is_invalid = TRUE;
+
+  return self;
+}
+
+GtkCssVariableValue *
+gtk_css_variable_value_ref (GtkCssVariableValue *self)
+{
+  self->ref_count++;
+
+  return self;
+}
+
+void
+gtk_css_variable_value_unref (GtkCssVariableValue *self)
+{
+  gsize i;
+
+  self->ref_count--;
+  if (self->ref_count > 0)
+    return;
+
+  g_bytes_unref (self->bytes);
+
+  for (i = 0; i < self->n_references; i++)
+    {
+      GtkCssVariableValueReference *ref = &self->references[i];
+
+      g_free (ref->name);
+      if (ref->fallback)
+        gtk_css_variable_value_unref (ref->fallback);
+    }
+
+  if (self->section)
+    gtk_css_section_unref (self->section);
+
+  g_free (self->references);
+  g_free (self);
+}
+
+void
+gtk_css_variable_value_print (GtkCssVariableValue *self,
+                              GString             *string)
+{
+  gsize len = self->end_offset - self->offset;
+  gconstpointer data = g_bytes_get_region (self->bytes, 1, self->offset, len);
+
+  g_assert (data != NULL);
+
+  g_string_append_len (string, (const char *) data, len);
+}
+
+char *
+gtk_css_variable_value_to_string (GtkCssVariableValue *self)
+{
+  GString *string = g_string_new (NULL);
+  gtk_css_variable_value_print (self, string);
+  return g_string_free (string, FALSE);
+}
+
+gboolean
+gtk_css_variable_value_equal (const GtkCssVariableValue *value1,
+                              const GtkCssVariableValue *value2)
+{
+  if (value1 == value2)
+    return TRUE;
+
+  if (value1 == NULL || value2 == NULL)
+    return FALSE;
+
+  if (value1->bytes != value2->bytes)
+    return FALSE;
+
+  if (value1->offset != value2->offset)
+    return FALSE;
+
+  if (value1->end_offset != value2->end_offset)
+    return FALSE;
+
+  return TRUE;
+}
+
+GtkCssVariableValue *
+gtk_css_variable_value_transition  (GtkCssVariableValue *start,
+                                    GtkCssVariableValue *end,
+                                    double               progress)
+{
+  GtkCssVariableValue *ret = progress < 0.5 ? start : end;
+
+  if (ret == NULL)
+    return NULL;
+
+  return gtk_css_variable_value_ref (ret);
+}
+
+void
+gtk_css_variable_value_set_section (GtkCssVariableValue *self,
+                                    GtkCssSection       *section)
+{
+  self->section = gtk_css_section_ref (section);
+}
+
+void
+gtk_css_variable_value_taint (GtkCssVariableValue *self)
+{
+  self->is_animation_tainted = TRUE;
+}
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2023 GNOME Foundation Inc.
+ *
+ * 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 2.1 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/>.
+ *
+ * Authors: Alice Mikhaylenko <alicem@gnome.org>
+ */
+
+#pragma once
+
+#include "gtkcss.h"
+#include "gtkcsstokenizerprivate.h"
+
+G_BEGIN_DECLS
+
+typedef struct _GtkCssVariableValueReference GtkCssVariableValueReference;
+typedef struct _GtkCssVariableValue GtkCssVariableValue;
+
+struct _GtkCssVariableValueReference
+{
+  char *name;
+  gsize length;
+  GtkCssVariableValue *fallback;
+};
+
+struct _GtkCssVariableValue
+{
+  int ref_count;
+
+  GBytes *bytes;
+  gsize offset;
+  gsize end_offset;
+  gsize length;
+
+  GtkCssVariableValueReference *references;
+  gsize n_references;
+
+  GtkCssSection *section;
+  gboolean is_invalid;
+  gboolean is_animation_tainted;
+};
+
+GtkCssVariableValue *gtk_css_variable_value_new         (GBytes                       *bytes,
+                                                         gsize                         offset,
+                                                         gsize                         end_offset,
+                                                         gsize                         length,
+                                                         GtkCssVariableValueReference *references,
+                                                         gsize                         n_references);
+GtkCssVariableValue *gtk_css_variable_value_new_initial (GBytes                       *bytes,
+                                                         gsize                         offset,
+                                                         gsize                         end_offset);
+GtkCssVariableValue *gtk_css_variable_value_ref         (GtkCssVariableValue          *self);
+void                 gtk_css_variable_value_unref       (GtkCssVariableValue          *self);
+void                 gtk_css_variable_value_print       (GtkCssVariableValue          *self,
+                                                         GString                      *string);
+char *               gtk_css_variable_value_to_string   (GtkCssVariableValue          *self);
+gboolean             gtk_css_variable_value_equal       (const GtkCssVariableValue    *value1,
+                                                         const GtkCssVariableValue    *value2) G_GNUC_PURE;
+GtkCssVariableValue *gtk_css_variable_value_transition  (GtkCssVariableValue          *start,
+                                                         GtkCssVariableValue          *end,
+                                                         double                        progress);
+void                 gtk_css_variable_value_set_section (GtkCssVariableValue          *self,
+                                                         GtkCssSection                *section);
+void                 gtk_css_variable_value_taint       (GtkCssVariableValue          *self);
+
+G_END_DECLS
@@ -6,8 +6,9 @@ gtk_css_public_sources = files([
 gtk_css_private_sources = files([
  'gtkcssdataurl.c',
  'gtkcssparser.c',
-  'gtkcsstokenizer.c',
  'gtkcssserializer.c',
+  'gtkcsstokenizer.c',
+  'gtkcssvariablevalue.c',
 ])

 gtk_css_public_headers = files([
@@ -21,9 +21,16 @@
 #include "gtkscalerprivate.h"

 #include "gdk/gdktextureprivate.h"
+#include "gdk/loaders/gdkpngprivate.h"

 /* {{{ Pixbuf helpers */

+static inline gboolean
+pixbuf_is_only_fg (GdkPixbuf *pixbuf)
+{
+  return gdk_pixbuf_get_option (pixbuf, "tEXt::only-foreground") != NULL;
+}
+
 static GdkPixbuf *
 load_from_stream (GdkPixbufLoader  *loader,
                  GInputStream     *stream,
@@ -199,6 +206,7 @@ _gdk_pixbuf_new_from_resource_at_scale (const char   *resource_path,

 static GdkPixbuf *
 load_symbolic_svg (const char     *escaped_file_data,
+                   gsize           len,
                   int             width,
                   int             height,
                   const char     *icon_width_str,
@@ -214,37 +222,38 @@ load_symbolic_svg (const char     *escaped_file_data,
  char *data;

  data = g_strconcat ("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n"
-                      "<svg version=\"1.1\"\n"
-                      "     xmlns=\"http://www.w3.org/2000/svg\"\n"
-                      "     xmlns:xi=\"http://www.w3.org/2001/XInclude\"\n"
-                      "     width=\"", icon_width_str, "\"\n"
-                      "     height=\"", icon_height_str, "\">\n"
-                      "  <style type=\"text/css\">\n"
-                      "    rect,circle,path {\n"
-                      "      fill: ", fg_string," !important;\n"
-                      "    }\n"
-                      "    .warning {\n"
-                      "      fill: ", warning_color_string, " !important;\n"
-                      "    }\n"
-                      "    .error {\n"
-                      "      fill: ", error_color_string ," !important;\n"
-                      "    }\n"
-                      "    .success {\n"
-                      "      fill: ", success_color_string, " !important;\n"
-                      "    }\n"
-                      "  </style>\n"
-                      "  <xi:include href=\"data:text/xml;base64,", escaped_file_data, "\"/>\n"
-                      "</svg>",
+                      "<svg version=\"1.1\" "
+                           "xmlns=\"http://www.w3.org/2000/svg\" "
+                           "xmlns:xi=\"http://www.w3.org/2001/XInclude\" "
+                           "width=\"", icon_width_str, "\" "
+                           "height=\"", icon_height_str, "\">"
+                        "<style type=\"text/css\">"
+                          "rect,circle,path {"
+                            "fill: ", fg_string," !important;"
+                          "}\n"
+                          ".warning {"
+                             "fill: ", warning_color_string, " !important;"
+                          "}\n"
+                          ".error {"
+                            "fill: ", error_color_string ," !important;"
+                          "}\n"
+                          ".success {"
+                            "fill: ", success_color_string, " !important;"
+                          "}"
+                        "</style>"
+                        "<xi:include href=\"data:text/xml;base64,",
                      NULL);

  stream = g_memory_input_stream_new_from_data (data, -1, g_free);
+  g_memory_input_stream_add_data (G_MEMORY_INPUT_STREAM (stream), escaped_file_data, len, NULL);
+  g_memory_input_stream_add_data (G_MEMORY_INPUT_STREAM (stream), "\"/></svg>", strlen ("\"/></svg>"), NULL);
  pixbuf = gdk_pixbuf_new_from_stream_at_scale (stream, width, height, TRUE, NULL, error);
  g_object_unref (stream);

  return pixbuf;
 }

-static void
+static gboolean
 extract_plane (GdkPixbuf *src,
               GdkPixbuf *dst,
               int        from_plane,
@@ -255,6 +264,7 @@ extract_plane (GdkPixbuf *src,
  gsize src_stride, dst_stride;
  guchar *src_row, *dst_row;
  int x, y;
+  gboolean all_clear = TRUE;

  width = gdk_pixbuf_get_width (src);
  height = gdk_pixbuf_get_height (src);
@@ -274,11 +284,109 @@ extract_plane (GdkPixbuf *src,
      dst_row = dst_data + dst_stride * y;
      for (x = 0; x < width; x++)
        {
+          if (src_row[from_plane] != 0)
+            all_clear = FALSE;
+
          dst_row[to_plane] = src_row[from_plane];
          src_row += 4;
          dst_row += 4;
        }
    }
+
+  return all_clear;
+}
+
+static void
+keep_alpha (GdkPixbuf *src)
+{
+  guchar *data;
+  int width, height;
+  gsize stride;
+
+  data = gdk_pixbuf_get_pixels (src);
+  width = gdk_pixbuf_get_width (src);
+  height = gdk_pixbuf_get_height (src);
+  stride = gdk_pixbuf_get_rowstride (src);
+
+  for (int y = 0; y < height; y++)
+    {
+      guchar *row = data + stride * y;
+      for (int x = 0; x < width; x++)
+        {
+          row[0] = row[1] = row[2] = 0;
+          row += 4;
+        }
+    }
+}
+
+static void
+svg_find_size_strings (const char  *data,
+                       gsize        len,
+                       char       **width,
+                       char       **height)
+{
+  gsize i, j, k, l;
+
+  *width = NULL;
+  *height = NULL;
+
+  for (i = 0; i < len - 4; i++)
+    {
+      if (strncmp (data + i, "<svg", 4) == 0)
+        {
+          for (j = i + strlen ("<svg"); j < len - 9; j++)
+            {
+              if (strncmp (data + j, "height=\"", strlen ("height=\"")) == 0)
+                {
+                  k = l = j + strlen ("height=\"");
+                  while (l < len && data[l] != '\"')
+                    l++;
+
+                  *height = g_strndup (data + k, l - k);
+
+                  if (*width && *height)
+                    return;
+
+                  j = l;
+                }
+              else if (strncmp (data + j, "width=\"", strlen ("width=\"")) == 0)
+                {
+                  k = l = j + strlen ("width=\"");
+                  while (l < len && data[l] != '\"')
+                    l++;
+
+                  *width = g_strndup (data + k, l - k);
+
+                  if (*width && *height)
+                    return;
+
+                  j = l;
+                }
+              else if (data[j] == '>')
+                {
+                  break;
+                }
+            }
+
+          break;
+        }
+    }
+
+  *width = g_strdup ("16px");
+  *height = g_strdup ("16px");
+}
+
+static gboolean
+svg_has_symbolic_classes (const char *data,
+                          gsize       len)
+{
+#ifdef HAVE_MEMMEM
+  return memmem (data, len, "class=\"error\"", strlen ("class=\"error\"")) != NULL ||
+         memmem (data, len, "class=\"warning\"", strlen ("class=\"warning\"")) != NULL ||
+         memmem (data, len, "class=\"success\"", strlen ("class=\"success\"")) != NULL;
+#else
+  return TRUE;
+#endif
 }

 GdkPixbuf *
@@ -293,38 +401,46 @@ gtk_make_symbolic_pixbuf_from_data (const char  *file_data,
 {
  const char *r_string = "rgb(255,0,0)";
  const char *g_string = "rgb(0,255,0)";
-  char *icon_width_str;
-  char *icon_height_str;
-  GdkPixbuf *loaded;
+  char *icon_width_str = NULL;
+  char *icon_height_str = NULL;
+  char *escaped_file_data = NULL;
+  gsize len;
  GdkPixbuf *pixbuf = NULL;
-  int plane;
-  int icon_width, icon_height;
-  char *escaped_file_data;
+  gboolean has_symbolic_classes;
+  gboolean only_fg = TRUE;
+
+  has_symbolic_classes = svg_has_symbolic_classes (file_data, file_len);

  /* Fetch size from the original icon */
-  GInputStream *stream = g_memory_input_stream_new_from_data (file_data, file_len, NULL);
-  GdkPixbuf *reference = gdk_pixbuf_new_from_stream (stream, NULL, error);
-
-  g_object_unref (stream);
-
-  if (!reference)
-    return NULL;
-
-  icon_width = gdk_pixbuf_get_width (reference);
-  icon_height = gdk_pixbuf_get_height (reference);
-  g_object_unref (reference);
-
-  escaped_file_data = g_base64_encode ((guchar *) file_data, file_len);
-  icon_width_str = g_strdup_printf ("%d", icon_width);
-  icon_height_str = g_strdup_printf ("%d", icon_height);
+  if (has_symbolic_classes || width == 0 || height == 0)
+    svg_find_size_strings (file_data, file_len, &icon_width_str, &icon_height_str);

  if (width == 0)
-    width = icon_width * scale;
+    width = (int) (g_ascii_strtoull (icon_width_str, NULL, 0) * scale);
  if (height == 0)
-    height = icon_height * scale;
+    height = (int) (g_ascii_strtoull (icon_height_str, NULL, 0) * scale);

-  for (plane = 0; plane < 3; plane++)
+  if (!has_symbolic_classes)
    {
+      GInputStream *stream;
+
+      stream = g_memory_input_stream_new_from_data (file_data, file_len, NULL);
+      pixbuf = gdk_pixbuf_new_from_stream_at_scale (stream, width, height, TRUE, NULL, error);
+      g_object_unref (stream);
+
+      if (pixbuf)
+        keep_alpha (pixbuf);
+
+      goto out;
+    }
+
+  escaped_file_data = g_base64_encode ((guchar *) file_data, file_len);
+  len = strlen (escaped_file_data);
+
+  for (int plane = 0; plane < 3; plane++)
+    {
+      GdkPixbuf *loaded;
+
      /* Here we render the svg with all colors solid, this should
       * always make the alpha channel the same and it should match
       * the final alpha channel for all possible renderings. We
@@ -337,7 +453,7 @@ gtk_make_symbolic_pixbuf_from_data (const char  *file_data,
       * channels, with the color of the fg being implicitly
       * the "rest", as all color fractions should add up to 1.
       */
-      loaded = load_symbolic_svg (escaped_file_data, width, height,
+      loaded = load_symbolic_svg (escaped_file_data, len, width, height,
                                  icon_width_str,
                                  icon_height_str,
                                  g_string,
@@ -358,25 +474,26 @@ gtk_make_symbolic_pixbuf_from_data (const char  *file_data,
          g_free (filename);
        }

-      if (pixbuf == NULL)
+      if (plane == 0)
        {
          pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
                                   gdk_pixbuf_get_width (loaded),
                                   gdk_pixbuf_get_height (loaded));
-          gdk_pixbuf_fill (pixbuf, 0);
+          memset (gdk_pixbuf_get_pixels (pixbuf), 0, gdk_pixbuf_get_byte_length (pixbuf));
+
+          extract_plane (loaded, pixbuf, 3, 3);
        }

-      if (plane == 0)
-        extract_plane (loaded, pixbuf, 3, 3);
-
-      extract_plane (loaded, pixbuf, 0, plane);
+      only_fg &= extract_plane (loaded, pixbuf, 0, plane);

      g_object_unref (loaded);
    }

-  g_free (escaped_file_data);
-
 out:
+  if (only_fg && pixbuf)
+    gdk_pixbuf_set_option (pixbuf, "tEXt::only-foreground", "true");
+
+  g_free (escaped_file_data);
  g_free (icon_width_str);
  g_free (icon_height_str);

@@ -409,17 +526,17 @@ make_symbolic_pixbuf_from_resource (const char  *path,
 }

 static GdkPixbuf *
-make_symbolic_pixbuf_from_path (const char  *path,
-                                int          width,
-                                int          height,
-                                double       scale,
-                                GError     **error)
+make_symbolic_pixbuf_from_filename (const char  *filename,
+                                    int          width,
+                                    int          height,
+                                    double       scale,
+                                    GError     **error)
 {
  char *data;
  gsize size;
  GdkPixbuf *pixbuf;

-  if (!g_file_get_contents (path, &data, &size, error))
+  if (!g_file_get_contents (filename, &data, &size, error))
    return NULL;

  pixbuf = gtk_make_symbolic_pixbuf_from_data (data, size, width, height, scale, NULL, error);
@@ -453,11 +570,85 @@ make_symbolic_pixbuf_from_file (GFile       *file,
 /* }}} */
 /* {{{ Texture API */

+static GdkTexture *
+texture_new_from_bytes (GBytes    *bytes,
+                        gboolean  *only_fg,
+                        GError   **error)
+{
+  GHashTable *options;
+  GdkTexture *texture;
+
+  if (!gdk_is_png (bytes))
+    return gdk_texture_new_from_bytes (bytes, error);
+
+  options = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
+  texture = gdk_load_png (bytes, options, error);
+  *only_fg = g_hash_table_contains (options, "foreground-only");
+  g_hash_table_unref (options);
+
+  return texture;
+}
+
+GdkTexture *
+gdk_texture_new_from_filename_with_fg (const char    *filename,
+                                       gboolean      *only_fg,
+                                       GError       **error)
+{
+  GFile *file;
+  GBytes *bytes;
+  GdkTexture *texture = NULL;
+
+  file = g_file_new_for_path (filename);
+  bytes = g_file_load_bytes (file, NULL, NULL, error);
+  if (bytes)
+    texture = texture_new_from_bytes (bytes, only_fg, error);
+  g_bytes_unref (bytes);
+  g_object_unref (file);
+
+  return texture;
+}
+
+GdkTexture *
+gdk_texture_new_from_resource_with_fg (const char *path,
+                                       gboolean   *only_fg)
+{
+  GBytes *bytes;
+  GdkTexture *texture = NULL;
+
+  bytes = g_resources_lookup_data (path, 0, NULL);
+  if (bytes)
+    texture = texture_new_from_bytes (bytes, only_fg, NULL);
+  g_bytes_unref (bytes);
+
+  return texture;
+}
+
+GdkTexture *
+gdk_texture_new_from_stream_with_fg (GInputStream  *stream,
+                                     gboolean      *only_fg,
+                                     GCancellable  *cancellable,
+                                     GError       **error)
+{
+  GdkPixbuf *pixbuf;
+  GdkTexture *texture = NULL;
+
+  pixbuf = _gdk_pixbuf_new_from_stream_scaled (stream, 0, cancellable, error);
+  if (pixbuf)
+    {
+      *only_fg = pixbuf_is_only_fg (pixbuf);
+      texture = gdk_texture_new_for_pixbuf (pixbuf);
+      g_object_unref (pixbuf);
+    }
+
+  return texture;
+}
+
 GdkTexture *
 gdk_texture_new_from_stream_at_scale (GInputStream  *stream,
                                      int            width,
                                      int            height,
                                      gboolean       aspect,
+                                      gboolean      *only_fg,
                                      GCancellable  *cancellable,
                                      GError       **error)
 {
@@ -467,24 +658,7 @@ gdk_texture_new_from_stream_at_scale (GInputStream  *stream,
  pixbuf = _gdk_pixbuf_new_from_stream_at_scale (stream, width, height, aspect, cancellable, error);
  if (pixbuf)
    {
-      texture = gdk_texture_new_for_pixbuf (pixbuf);
-      g_object_unref (pixbuf);
-    }
-
-  return texture;
-}
-
-GdkTexture *
-gdk_texture_new_from_stream (GInputStream  *stream,
-                             GCancellable  *cancellable,
-                             GError       **error)
-{
-  GdkPixbuf *pixbuf;
-  GdkTexture *texture = NULL;
-
-  pixbuf = _gdk_pixbuf_new_from_stream_scaled (stream, 0, cancellable, error);
-  if (pixbuf)
-    {
+      *only_fg = pixbuf_is_only_fg (pixbuf);
      texture = gdk_texture_new_for_pixbuf (pixbuf);
      g_object_unref (pixbuf);
    }
@@ -497,6 +671,7 @@ gdk_texture_new_from_resource_at_scale (const char    *path,
                                        int            width,
                                        int            height,
                                        gboolean       preserve_aspect,
+                                        gboolean      *only_fg,
                                        GError       **error)
 {
  GdkPixbuf *pixbuf;
@@ -505,6 +680,7 @@ gdk_texture_new_from_resource_at_scale (const char    *path,
  pixbuf = _gdk_pixbuf_new_from_resource_at_scale (path, width, height, preserve_aspect, error);
  if (pixbuf)
    {
+      *only_fg = pixbuf_is_only_fg (pixbuf);
      texture = gdk_texture_new_for_pixbuf (pixbuf);
      g_object_unref (pixbuf);
    }
@@ -516,18 +692,20 @@ gdk_texture_new_from_resource_at_scale (const char    *path,
 /* {{{ Symbolic texture API */

 GdkTexture *
-gdk_texture_new_from_path_symbolic (const char    *path,
-                                    int            width,
-                                    int            height,
-                                    double         scale,
-                                    GError       **error)
+gdk_texture_new_from_filename_symbolic (const char    *filename,
+                                        int            width,
+                                        int            height,
+                                        double         scale,
+                                        gboolean      *only_fg,
+                                        GError       **error)
 {
  GdkPixbuf *pixbuf;
  GdkTexture *texture = NULL;

-  pixbuf = make_symbolic_pixbuf_from_path (path, width, height, scale, error);
+  pixbuf = make_symbolic_pixbuf_from_filename (filename, width, height, scale, error);
  if (pixbuf)
    {
+      *only_fg = pixbuf_is_only_fg (pixbuf);
      texture = gdk_texture_new_for_pixbuf (pixbuf);
      g_object_unref (pixbuf);
    }
@@ -546,6 +724,7 @@ gdk_texture_new_from_resource_symbolic (const char  *path,
                                        int          width,
                                        int          height,
                                        double       scale,
+                                        gboolean    *only_fg,
                                        GError     **error)
 {
  GdkPixbuf *pixbuf;
@@ -554,6 +733,7 @@ gdk_texture_new_from_resource_symbolic (const char  *path,
  pixbuf = make_symbolic_pixbuf_from_resource (path, width, height, scale, error);
  if (pixbuf)
    {
+      *only_fg = pixbuf_is_only_fg (pixbuf);
      texture = gdk_texture_new_for_pixbuf (pixbuf);
      g_object_unref (pixbuf);
    }
@@ -588,14 +768,19 @@ gdk_texture_new_from_file_symbolic (GFile       *file,
                                    int          width,
                                    int          height,
                                    double       scale,
+                                    gboolean    *only_fg,
                                    GError     **error)
 {
  GdkPixbuf *pixbuf;
-  GdkTexture *texture;
+  GdkTexture *texture = NULL;

  pixbuf = make_symbolic_pixbuf_from_file (file, width, height, scale, error);
-  texture = gdk_texture_new_for_pixbuf (pixbuf);
-  g_object_unref (pixbuf);
+  if (pixbuf)
+    {
+      *only_fg = pixbuf_is_only_fg (pixbuf);
+      texture = gdk_texture_new_for_pixbuf (pixbuf);
+      g_object_unref (pixbuf);
+    }

  return texture;
 }
@@ -604,7 +789,7 @@ gdk_texture_new_from_file_symbolic (GFile       *file,
 /* {{{ Scaled paintable API */

 typedef struct {
-  int scale_factor;
+  double scale;
 } LoaderData;

 static void
@@ -620,24 +805,24 @@ on_loader_size_prepared (GdkPixbufLoader *loader,
  format = gdk_pixbuf_loader_get_format (loader);
  if (!gdk_pixbuf_format_is_scalable (format))
    {
-      loader_data->scale_factor = 1;
+      loader_data->scale = 1.0;
      return;
    }

  gdk_pixbuf_loader_set_size (loader,
-                              width * loader_data->scale_factor,
-                              height * loader_data->scale_factor);
+                              width * loader_data->scale,
+                              height * loader_data->scale);
 }

 static GdkPaintable *
 gdk_paintable_new_from_bytes_scaled (GBytes *bytes,
-                                     int     scale_factor)
+                                     double  scale)
 {
  LoaderData loader_data;
  GdkTexture *texture;
  GdkPaintable *paintable;

-  loader_data.scale_factor = scale_factor;
+  loader_data.scale = scale;

  if (gdk_texture_can_load (bytes))
    {
@@ -667,8 +852,8 @@ gdk_paintable_new_from_bytes_scaled (GBytes *bytes,
      texture = gdk_texture_new_for_pixbuf (gdk_pixbuf_loader_get_pixbuf (loader));
      g_object_unref (loader);

-      if (loader_data.scale_factor != 1)
-        paintable = gtk_scaler_new (GDK_PAINTABLE (texture), loader_data.scale_factor);
+      if (loader_data.scale != 1.0)
+        paintable = gtk_scaler_new (GDK_PAINTABLE (texture), loader_data.scale);
      else
        paintable = g_object_ref (GDK_PAINTABLE (texture));

@@ -679,20 +864,20 @@ gdk_paintable_new_from_bytes_scaled (GBytes *bytes,
 }

 GdkPaintable *
-gdk_paintable_new_from_path_scaled (const char *path,
-                                    int         scale_factor)
+gdk_paintable_new_from_filename_scaled (const char *filename,
+                                        double      scale)
 {
  char *contents;
  gsize length;
  GBytes *bytes;
  GdkPaintable *paintable;

-  if (!g_file_get_contents (path, &contents, &length, NULL))
+  if (!g_file_get_contents (filename, &contents, &length, NULL))
    return NULL;

  bytes = g_bytes_new_take (contents, length);

-  paintable = gdk_paintable_new_from_bytes_scaled (bytes, scale_factor);
+  paintable = gdk_paintable_new_from_bytes_scaled (bytes, scale);

  g_bytes_unref (bytes);

@@ -701,7 +886,7 @@ gdk_paintable_new_from_path_scaled (const char *path,

 GdkPaintable *
 gdk_paintable_new_from_resource_scaled (const char *path,
-                                        int         scale_factor)
+                                        double      scale)
 {
  GBytes *bytes;
  GdkPaintable *paintable;
@@ -710,15 +895,16 @@ gdk_paintable_new_from_resource_scaled (const char *path,
  if (!bytes)
    return NULL;

-  paintable = gdk_paintable_new_from_bytes_scaled (bytes, scale_factor);
+  paintable = gdk_paintable_new_from_bytes_scaled (bytes, scale);
+
  g_bytes_unref (bytes);

  return paintable;
 }

 GdkPaintable *
-gdk_paintable_new_from_file_scaled (GFile *file,
-                                    int    scale_factor)
+gdk_paintable_new_from_file_scaled (GFile  *file,
+                                    double  scale)
 {
  GBytes *bytes;
  GdkPaintable *paintable;
@@ -727,7 +913,7 @@ gdk_paintable_new_from_file_scaled (GFile *file,
  if (!bytes)
    return NULL;

-  paintable = gdk_paintable_new_from_bytes_scaled (bytes, scale_factor);
+  paintable = gdk_paintable_new_from_bytes_scaled (bytes, scale);

  g_bytes_unref (bytes);

@@ -29,45 +29,56 @@ GdkPixbuf *gtk_make_symbolic_pixbuf_from_data       (const char    *data,
                                                     const char    *debug_output_to,
                                                     GError       **error);

-GdkTexture *gdk_texture_new_from_stream             (GInputStream  *stream,
+GdkTexture *gdk_texture_new_from_filename_with_fg   (const char    *filename,
+                                                     gboolean      *only_fg,
+                                                     GError       **error);
+GdkTexture *gdk_texture_new_from_resource_with_fg   (const char    *path,
+                                                     gboolean      *only_fg);
+GdkTexture *gdk_texture_new_from_stream_with_fg     (GInputStream  *stream,
+                                                     gboolean      *only_fg,
                                                     GCancellable  *cancellable,
                                                     GError       **error);
 GdkTexture *gdk_texture_new_from_stream_at_scale    (GInputStream  *stream,
                                                     int            width,
                                                     int            height,
                                                     gboolean       aspect,
+                                                     gboolean      *only_fg,
                                                     GCancellable  *cancellable,
                                                     GError       **error);
 GdkTexture *gdk_texture_new_from_resource_at_scale  (const char    *path,
                                                     int            width,
                                                     int            height,
                                                     gboolean       aspect,
+                                                     gboolean      *only_fg,
                                                     GError       **error);

-GdkTexture *gdk_texture_new_from_path_symbolic      (const char    *path,
+GdkTexture *gdk_texture_new_from_filename_symbolic  (const char    *path,
                                                     int            width,
                                                     int            height,
                                                     double         scale,
+                                                     gboolean      *only_fg,
                                                     GError       **error);
 GdkTexture *gdk_texture_new_from_file_symbolic      (GFile         *file,
                                                     int            width,
                                                     int            height,
                                                     double         scale,
+                                                     gboolean      *only_fg,
                                                     GError       **error);
 GdkTexture *gdk_texture_new_from_resource_symbolic  (const char    *path,
                                                     int            width,
                                                     int            height,
                                                     double         scale,
+                                                     gboolean      *only_fg,
                                                     GError       **error);

 GdkTexture *gtk_load_symbolic_texture_from_file     (GFile         *file);
-GdkTexture *gtk_load_symbolic_texture_from_resource (const char    *data);
+GdkTexture *gtk_load_symbolic_texture_from_resource (const char    *path);

-GdkPaintable *gdk_paintable_new_from_path_scaled     (const char    *path,
-                                                      int            scale_factor);
+GdkPaintable *gdk_paintable_new_from_filename_scaled (const char    *filename,
+                                                      double         scale);
 GdkPaintable *gdk_paintable_new_from_resource_scaled (const char    *path,
-                                                      int            scale_factor);
+                                                      double         scale);
 GdkPaintable *gdk_paintable_new_from_file_scaled     (GFile         *file,
-                                                      int            scale_factor);
+                                                      double         scale);

 G_END_DECLS
@@ -28,6 +28,7 @@
 #include "gtkwidgetprivate.h"
 #include "gtkcsscolorvalueprivate.h"
 #include "gdk/gdkrgbaprivate.h"
+#include "gtkcssshadowvalueprivate.h"

 #include <math.h>

@@ -97,6 +98,11 @@ gsk_pango_renderer_draw_glyph_item (PangoRenderer  *renderer,
 {
  GskPangoRenderer *crenderer = (GskPangoRenderer *) (renderer);
  GdkRGBA color;
+  gboolean has_shadow = FALSE;
+
+  if (crenderer->shadow_style)
+    has_shadow = gtk_css_shadow_value_push_snapshot (crenderer->shadow_style->font->text_shadow,
+                                                     crenderer->snapshot);

  get_color (crenderer, PANGO_RENDER_PART_FOREGROUND, &color);

@@ -106,6 +112,9 @@ gsk_pango_renderer_draw_glyph_item (PangoRenderer  *renderer,
                            &color,
                            (float) x / PANGO_SCALE,
                            (float) y / PANGO_SCALE);
+
+  if (has_shadow)
+    gtk_snapshot_pop (crenderer->snapshot);
 }

 static void
@@ -343,20 +352,20 @@ gsk_pango_renderer_prepare_run (PangoRenderer  *renderer,
      GTK_IS_TEXT_VIEW (crenderer->widget))
    {
      GtkCssNode *node;
-      GtkCssValue *value;
+      GtkCssStyle *style;

      node = gtk_text_view_get_selection_node ((GtkTextView *)crenderer->widget);
-      value = gtk_css_node_get_style (node)->core->color;
-      fg_rgba = gtk_css_color_value_get_rgba (value);
+      style = gtk_css_node_get_style (node);
+      fg_rgba = gtk_css_color_value_get_rgba (style->core->color);
    }
  else if (crenderer->state == GSK_PANGO_RENDERER_CURSOR && gtk_widget_has_focus (crenderer->widget))
    {
      GtkCssNode *node;
-      GtkCssValue *value;
+      GtkCssStyle *style;

      node = gtk_widget_get_css_node (crenderer->widget);
-      value = gtk_css_node_get_style (node)->background->background_color;
-      fg_rgba = gtk_css_color_value_get_rgba (value);
+      style = gtk_css_node_get_style (node);
+      fg_rgba = gtk_css_color_value_get_rgba (style->background->background_color);
    }
  else
    fg_rgba = appearance->fg_rgba;
@@ -382,6 +391,15 @@ gsk_pango_renderer_prepare_run (PangoRenderer  *renderer,
    }
  else
    text_renderer_set_rgba (crenderer, PANGO_RENDER_PART_UNDERLINE, fg_rgba);
+
+  crenderer->shadow_style = NULL;
+  if (GTK_IS_TEXT_VIEW (crenderer->widget))
+    {
+      if (crenderer->state == GSK_PANGO_RENDERER_SELECTED)
+        crenderer->shadow_style = gtk_css_node_get_style (gtk_text_view_get_selection_node ((GtkTextView *)crenderer->widget));
+      else if (crenderer->state != GSK_PANGO_RENDERER_CURSOR)
+        crenderer->shadow_style = gtk_css_node_get_style (gtk_widget_get_css_node (crenderer->widget));
+    }
 }

 static void
@@ -439,6 +457,7 @@ gsk_pango_renderer_release (GskPangoRenderer *renderer)
    {
      renderer->widget = NULL;
      renderer->snapshot = NULL;
+      renderer->shadow_style = NULL;

      if (renderer->error_color)
        {
@@ -20,6 +20,7 @@

 #include <pango/pango.h>
 #include "gtk/gtksnapshot.h"
+#include "gtk/gtkcssstyleprivate.h"

 G_BEGIN_DECLS

@@ -58,6 +59,7 @@ struct _GskPangoRenderer
  GtkWidget             *widget;
  GtkSnapshot           *snapshot;
  const GdkRGBA         *fg_color;
+  GtkCssStyle           *shadow_style;

  /* Error underline color for this widget */
  GdkRGBA               *error_color;
@@ -808,6 +808,11 @@ static const GtkAccessibleCollect collect_props[] = {
    .ctype = GTK_ACCESSIBLE_COLLECT_STRING,
    .name = "valuetext"
  },
+  [GTK_ACCESSIBLE_PROPERTY_HELP_TEXT] = {
+    .value = GTK_ACCESSIBLE_PROPERTY_HELP_TEXT,
+    .ctype = GTK_ACCESSIBLE_COLLECT_STRING,
+    .name = "helptext"
+  },
 };

 /* § 6.6.4 Relationship Attributes */
@@ -1662,7 +1667,7 @@ gtk_accessible_value_get_default_for_property (GtkAccessibleProperty property)
 {
  const GtkAccessibleCollect *cstate = &collect_props[property];

-  g_return_val_if_fail (property <= GTK_ACCESSIBLE_PROPERTY_VALUE_TEXT, NULL);
+  g_return_val_if_fail (property <= GTK_ACCESSIBLE_PROPERTY_HELP_TEXT, NULL);

  switch (cstate->value)
    {
@@ -1692,6 +1697,7 @@ gtk_accessible_value_get_default_for_property (GtkAccessibleProperty property)
    case GTK_ACCESSIBLE_PROPERTY_PLACEHOLDER:
    case GTK_ACCESSIBLE_PROPERTY_ROLE_DESCRIPTION:
    case GTK_ACCESSIBLE_PROPERTY_VALUE_TEXT:
+    case GTK_ACCESSIBLE_PROPERTY_HELP_TEXT:
      return gtk_undefined_accessible_value_new ();

    /* Token properties */
@@ -1732,7 +1738,7 @@ gtk_accessible_value_collect_for_property (GtkAccessibleProperty   property,
 {
  const GtkAccessibleCollect *cstate = &collect_props[property];

-  g_return_val_if_fail (property <= GTK_ACCESSIBLE_PROPERTY_VALUE_TEXT, NULL);
+  g_return_val_if_fail (property <= GTK_ACCESSIBLE_PROPERTY_HELP_TEXT, NULL);

  return gtk_accessible_value_collect_valist (cstate, error, args);
 }
@@ -1760,7 +1766,7 @@ gtk_accessible_value_collect_for_property_value (GtkAccessibleProperty   propert
 {
  const GtkAccessibleCollect *cstate = &collect_props[property];

-  g_return_val_if_fail (property <= GTK_ACCESSIBLE_PROPERTY_VALUE_TEXT, NULL);
+  g_return_val_if_fail (property <= GTK_ACCESSIBLE_PROPERTY_HELP_TEXT, NULL);

  return gtk_accessible_value_collect_value (cstate, value, error);
 }
@@ -1773,7 +1779,7 @@ gtk_accessible_value_parse_for_property (GtkAccessibleProperty   property,
 {
  const GtkAccessibleCollect *cstate = &collect_props[property];

-  g_return_val_if_fail (property <= GTK_ACCESSIBLE_PROPERTY_VALUE_TEXT, NULL);
+  g_return_val_if_fail (property <= GTK_ACCESSIBLE_PROPERTY_HELP_TEXT, NULL);

  return gtk_accessible_value_parse (cstate, str, len, error);
 }
@@ -1794,7 +1800,7 @@ gtk_accessible_property_init_value (GtkAccessibleProperty  property,
 {
  const GtkAccessibleCollect *cstate = &collect_props[property];

-  g_return_if_fail (property <= GTK_ACCESSIBLE_PROPERTY_VALUE_TEXT);
+  g_return_if_fail (property <= GTK_ACCESSIBLE_PROPERTY_HELP_TEXT);

  gtk_accessible_attribute_init_value (cstate, value);
 }
@@ -990,11 +990,13 @@ GtkActionMuxer *
 gtk_application_get_parent_muxer_for_window (GtkWindow *window)
 {
  GtkApplication *application = gtk_window_get_application (window);
-  GtkApplicationPrivate *priv = gtk_application_get_instance_private (application);
+  GtkApplicationPrivate *priv;

  if (!application)
    return NULL;

+  priv = gtk_application_get_instance_private (application);
+
  return priv->muxer;
 }

@@ -328,6 +328,7 @@ static const char *property_attrs[] = {
  [GTK_ACCESSIBLE_PROPERTY_VALUE_MIN]           = "valuemin",
  [GTK_ACCESSIBLE_PROPERTY_VALUE_NOW]           = "valuenow",
  [GTK_ACCESSIBLE_PROPERTY_VALUE_TEXT]          = "valuetext",
+  [GTK_ACCESSIBLE_PROPERTY_HELP_TEXT]           = "helptext",
 };

 /*< private >
@@ -342,7 +343,7 @@ const char *
 gtk_accessible_property_get_attribute_name (GtkAccessibleProperty property)
 {
  g_return_val_if_fail (property >= GTK_ACCESSIBLE_PROPERTY_AUTOCOMPLETE &&
-                        property <= GTK_ACCESSIBLE_PROPERTY_VALUE_TEXT,
+                        property <= GTK_ACCESSIBLE_PROPERTY_HELP_TEXT,
                        "<none>");

  return property_attrs[property];
@@ -1055,6 +1056,7 @@ gtk_at_context_get_accessible_relation (GtkATContext          *self,
 static guint8 naming[] = {
  [GTK_ACCESSIBLE_ROLE_ALERT] = NAME_FROM_AUTHOR,
  [GTK_ACCESSIBLE_ROLE_ALERT_DIALOG] = NAME_FROM_AUTHOR|GTK_ACCESSIBLE_NAME_REQUIRED,
+  [GTK_ACCESSIBLE_ROLE_APPLICATION] = NAME_FROM_AUTHOR|GTK_ACCESSIBLE_NAME_REQUIRED,
  [GTK_ACCESSIBLE_ROLE_ARTICLE] = NAME_FROM_AUTHOR,
  [GTK_ACCESSIBLE_ROLE_BANNER] = GTK_ACCESSIBLE_NAME_PROHIBITED,
  [GTK_ACCESSIBLE_ROLE_BLOCK_QUOTE] = NAME_FROM_AUTHOR,
@@ -1099,6 +1101,7 @@ static guint8 naming[] = {
  [GTK_ACCESSIBLE_ROLE_NONE] = GTK_ACCESSIBLE_NAME_PROHIBITED,
  [GTK_ACCESSIBLE_ROLE_NOTE] = NAME_FROM_AUTHOR,
  [GTK_ACCESSIBLE_ROLE_OPTION] = NAME_FROM_AUTHOR|NAME_FROM_CONTENT|GTK_ACCESSIBLE_NAME_REQUIRED,
+  [GTK_ACCESSIBLE_ROLE_PARAGRAPH] = GTK_ACCESSIBLE_NAME_PROHIBITED,
  [GTK_ACCESSIBLE_ROLE_PRESENTATION] = GTK_ACCESSIBLE_NAME_PROHIBITED,
  [GTK_ACCESSIBLE_ROLE_PROGRESS_BAR] = NAME_FROM_AUTHOR|GTK_ACCESSIBLE_NAME_REQUIRED,
  [GTK_ACCESSIBLE_ROLE_RADIO] = NAME_FROM_AUTHOR|NAME_FROM_CONTENT|GTK_ACCESSIBLE_NAME_REQUIRED,
@@ -1124,9 +1127,11 @@ static guint8 naming[] = {
  [GTK_ACCESSIBLE_ROLE_TABLE] = NAME_FROM_AUTHOR|GTK_ACCESSIBLE_NAME_REQUIRED,
  [GTK_ACCESSIBLE_ROLE_TAB_LIST] = NAME_FROM_AUTHOR,
  [GTK_ACCESSIBLE_ROLE_TAB_PANEL] = NAME_FROM_AUTHOR|GTK_ACCESSIBLE_NAME_REQUIRED,
+  [GTK_ACCESSIBLE_ROLE_TERMINAL] = NAME_FROM_AUTHOR|GTK_ACCESSIBLE_NAME_REQUIRED,
  [GTK_ACCESSIBLE_ROLE_TEXT_BOX] = NAME_FROM_AUTHOR|GTK_ACCESSIBLE_NAME_REQUIRED,
  [GTK_ACCESSIBLE_ROLE_TIME] = GTK_ACCESSIBLE_NAME_PROHIBITED,
  [GTK_ACCESSIBLE_ROLE_TIMER] = NAME_FROM_AUTHOR,
+  [GTK_ACCESSIBLE_ROLE_TOGGLE_BUTTON] = NAME_FROM_AUTHOR|GTK_ACCESSIBLE_NAME_REQUIRED,
  [GTK_ACCESSIBLE_ROLE_TOOLBAR] = NAME_FROM_AUTHOR|GTK_ACCESSIBLE_NAME_RECOMMENDED,
  [GTK_ACCESSIBLE_ROLE_TOOLTIP] = NAME_FROM_AUTHOR|NAME_FROM_CONTENT,
  [GTK_ACCESSIBLE_ROLE_TREE] = NAME_FROM_AUTHOR|GTK_ACCESSIBLE_NAME_REQUIRED,
@@ -1134,9 +1139,6 @@ static guint8 naming[] = {
  [GTK_ACCESSIBLE_ROLE_TREE_ITEM] = NAME_FROM_AUTHOR|NAME_FROM_CONTENT|GTK_ACCESSIBLE_NAME_REQUIRED,
  [GTK_ACCESSIBLE_ROLE_WIDGET] = NAME_FROM_AUTHOR|NAME_FROM_CONTENT,
  [GTK_ACCESSIBLE_ROLE_WINDOW] = NAME_FROM_AUTHOR,
-  [GTK_ACCESSIBLE_ROLE_TOGGLE_BUTTON] = NAME_FROM_AUTHOR|GTK_ACCESSIBLE_NAME_REQUIRED,
-  [GTK_ACCESSIBLE_ROLE_APPLICATION] = NAME_FROM_AUTHOR|GTK_ACCESSIBLE_NAME_REQUIRED,
-  [GTK_ACCESSIBLE_ROLE_PARAGRAPH] = GTK_ACCESSIBLE_NAME_PROHIBITED,
 };

 /* < private >
@@ -47,7 +47,8 @@ typedef enum {
  GTK_ACCESSIBLE_PROPERTY_CHANGE_VALUE_MAX        = 1 << GTK_ACCESSIBLE_PROPERTY_VALUE_MAX,
  GTK_ACCESSIBLE_PROPERTY_CHANGE_VALUE_MIN        = 1 << GTK_ACCESSIBLE_PROPERTY_VALUE_MIN,
  GTK_ACCESSIBLE_PROPERTY_CHANGE_VALUE_NOW        = 1 << GTK_ACCESSIBLE_PROPERTY_VALUE_NOW,
-  GTK_ACCESSIBLE_PROPERTY_CHANGE_VALUE_TEXT       = 1 << GTK_ACCESSIBLE_PROPERTY_VALUE_TEXT
+  GTK_ACCESSIBLE_PROPERTY_CHANGE_VALUE_TEXT       = 1 << GTK_ACCESSIBLE_PROPERTY_VALUE_TEXT,
+  GTK_ACCESSIBLE_PROPERTY_CHANGE_HELP_TEXT        = 1 << GTK_ACCESSIBLE_PROPERTY_HELP_TEXT,
 } GtkAccessiblePropertyChange;

 typedef enum {
@@ -32,8 +32,12 @@
 * `GtkBuilderListItemFactory` is a `GtkListItemFactory` that creates
 * widgets by instantiating `GtkBuilder` UI templates.
 *
- * The templates must be extending `GtkListItem`, and typically use
- * `GtkExpression`s to obtain data from the items in the model.
+ * The templates must extend the class that the parent widget expects.
+ * For example, a factory provided to [property@Gtk.ListView:factory] must have
+ * a template that extends [class@Gtk.ListItem].
+ *
+ * Templates typically use `GtkExpression`s to obtain data from the items
+ * in the model.
 *
 * Example:
 * ```xml
@@ -203,7 +207,7 @@ gtk_builder_list_item_factory_set_property (GObject      *object,
    case PROP_RESOURCE:
      {
        GError *error = NULL;
-        GBytes *bytes;  
+        GBytes *bytes;
        const char *resource;

        resource = g_value_get_string (value);
@@ -1006,7 +1006,7 @@ gtk_check_button_set_group (GtkCheckButton *self,
                            GtkCheckButton *group)
 {
  GtkCheckButtonPrivate *priv = gtk_check_button_get_instance_private (self);
-  GtkCheckButtonPrivate *group_priv = gtk_check_button_get_instance_private (group);
+  GtkCheckButtonPrivate *group_priv;

  g_return_if_fail (GTK_IS_CHECK_BUTTON (self));
  g_return_if_fail (self != group);
@@ -1037,6 +1037,8 @@ gtk_check_button_set_group (GtkCheckButton *self,
  if (priv->group_next == group)
    return;

+  group_priv = gtk_check_button_get_instance_private (group);
+
  priv->group_prev = NULL;
  if (group_priv->group_prev)
    {
@@ -861,6 +861,8 @@ gtk_column_view_class_init (GtkColumnViewClass *klass)
   *
   * The factory used for configuring rows.
   *
+   * The factory must be for configuring [class@Gtk.ColumnViewRow] objects.
+   *
   * Since: 4.12
   */
  properties[PROP_ROW_FACTORY] =
@@ -926,6 +928,8 @@ gtk_column_view_class_init (GtkColumnViewClass *klass)
   *
   * Factory for creating header widgets.
   *
+   * The factory must be for configuring [class@Gtk.ListHeader] objects.
+   *
   * Since: 4.12
   */
  properties[PROP_HEADER_FACTORY] =
@@ -255,6 +255,8 @@ gtk_column_view_column_class_init (GtkColumnViewColumnClass *klass)
   * GtkColumnViewColumn:factory: (attributes org.gtk.Property.get=gtk_column_view_column_get_factory org.gtk.Property.set=gtk_column_view_column_set_factory)
   *
   * Factory for populating list items.
+   *
+   * The factory must be for configuring [class@Gtk.ColumnViewCell] objects.
   */
  properties[PROP_FACTORY] =
    g_param_spec_object ("factory", NULL, NULL,
@@ -761,7 +763,7 @@ gtk_column_view_column_remove_from_sorter (GtkColumnViewColumn *self)
 {
  if (self->view == NULL)
    return;
-  
+
  gtk_column_view_sorter_remove_column (GTK_COLUMN_VIEW_SORTER (gtk_column_view_get_sorter (self->view)), self);
 }

@@ -33,13 +33,59 @@
 #include "gtkcssstringvalueprivate.h"
 #include "gtkcssstylepropertyprivate.h"
 #include "gtkcsstransitionprivate.h"
+#include "gtkcssvaluesprivate.h"
 #include "gtkprivate.h"
 #include "gtkstyleanimationprivate.h"
 #include "gtkstylepropertyprivate.h"
 #include "gtkstyleproviderprivate.h"
+#include "gtkcsscustompropertypoolprivate.h"

 G_DEFINE_TYPE (GtkCssAnimatedStyle, gtk_css_animated_style, GTK_TYPE_CSS_STYLE)

+#define DEFINE_VALUES(ENUM, TYPE, NAME) \
+static inline void \
+gtk_css_ ## NAME ## _values_recompute (GtkCssAnimatedStyle *animated) \
+{ \
+  GtkCssStyle *style = (GtkCssStyle *)animated; \
+  GtkCssValue **values = (GtkCssValue **)((guint8*)(animated->style->NAME) + sizeof (GtkCssValues)); \
+  int i; \
+\
+  for (i = 0; i < G_N_ELEMENTS (NAME ## _props); i++) \
+    { \
+      guint id = NAME ## _props[i]; \
+      GtkCssValue *original, *computed; \
+\
+      if (values[i] == NULL) \
+        continue; \
+\
+      original = gtk_css_style_get_original_value (style, id); \
+      if (original == NULL) \
+        continue; \
+\
+      computed = _gtk_css_value_compute (original, \
+                                         id, \
+                                         animated->provider, \
+                                         style, \
+                                         animated->parent_style, \
+                                         NULL); \
+      if (computed == NULL) \
+        continue; \
+\
+      gtk_css_animated_style_set_animated_value (animated, id, computed); \
+    } \
+}
+
+DEFINE_VALUES (CORE, Core, core)
+DEFINE_VALUES (BACKGROUND, Background, background)
+DEFINE_VALUES (BORDER, Border, border)
+DEFINE_VALUES (ICON, Icon, icon)
+DEFINE_VALUES (OUTLINE, Outline, outline)
+DEFINE_VALUES (FONT, Font, font)
+DEFINE_VALUES (FONT_VARIANT, FontVariant, font_variant)
+DEFINE_VALUES (ANIMATION, Animation, animation)
+DEFINE_VALUES (TRANSITION, Transition, transition)
+DEFINE_VALUES (SIZE, Size, size)
+DEFINE_VALUES (OTHER, Other, other)

 static GtkCssSection *
 gtk_css_animated_style_get_section (GtkCssStyle *style,
@@ -74,6 +120,15 @@ gtk_css_animated_style_get_static_style (GtkCssStyle *style)
  return (GtkCssStaticStyle *)animated->style;
 }

+static GtkCssValue *
+gtk_css_animated_style_get_original_value (GtkCssStyle *style,
+                                           guint        id)
+{
+  GtkCssAnimatedStyle *animated = GTK_CSS_ANIMATED_STYLE (style);
+
+  return gtk_css_style_get_original_value (animated->style, id);
+}
+
 static void
 gtk_css_animated_style_dispose (GObject *object)
 {
@@ -96,6 +151,9 @@ gtk_css_animated_style_finalize (GObject *object)
  GtkCssAnimatedStyle *style = GTK_CSS_ANIMATED_STYLE (object);

  g_object_unref (style->style);
+  if (style->parent_style)
+    g_object_unref (style->parent_style);
+  g_object_unref (style->provider);

  G_OBJECT_CLASS (gtk_css_animated_style_parent_class)->finalize (object);
 }
@@ -112,6 +170,7 @@ gtk_css_animated_style_class_init (GtkCssAnimatedStyleClass *klass)
  style_class->get_section = gtk_css_animated_style_get_section;
  style_class->is_static = gtk_css_animated_style_is_static;
  style_class->get_static_style = gtk_css_animated_style_get_static_style;
+  style_class->get_original_value = gtk_css_animated_style_get_original_value;
 }

 static void
@@ -546,6 +605,51 @@ gtk_css_animated_style_get_intrinsic_value (GtkCssAnimatedStyle *style,
  return gtk_css_style_get_value (style->style, id);
 }

+void
+gtk_css_animated_style_set_animated_custom_value (GtkCssAnimatedStyle *animated,
+                                                  int                  id,
+                                                  GtkCssVariableValue *value)
+{
+  GtkCssStyle *style = (GtkCssStyle *)animated;
+
+  gtk_internal_return_if_fail (GTK_IS_CSS_ANIMATED_STYLE (style));
+  gtk_internal_return_if_fail (value != NULL);
+
+  if (style->variables == NULL)
+    {
+      style->variables = gtk_css_variable_set_new ();
+      if (animated->parent_style)
+        gtk_css_variable_set_set_parent (style->variables,
+                                         animated->parent_style->variables);
+    }
+  else if (style->variables == animated->style->variables)
+    {
+      gtk_css_variable_set_unref (style->variables);
+      style->variables = gtk_css_variable_set_copy (animated->style->variables);
+    }
+
+  gtk_css_variable_set_add (style->variables, id, value);
+
+  gtk_css_core_values_recompute (animated);
+  gtk_css_background_values_recompute (animated);
+  gtk_css_border_values_recompute (animated);
+  gtk_css_icon_values_recompute (animated);
+  gtk_css_outline_values_recompute (animated);
+  gtk_css_font_values_recompute (animated);
+  gtk_css_font_variant_values_recompute (animated);
+  gtk_css_animation_values_recompute (animated);
+  gtk_css_transition_values_recompute (animated);
+  gtk_css_size_values_recompute (animated);
+  gtk_css_other_values_recompute (animated);
+}
+
+GtkCssVariableValue *
+gtk_css_animated_style_get_intrinsic_custom_value (GtkCssAnimatedStyle *style,
+                                                   int                  id)
+{
+  return gtk_css_style_get_custom_property (style->style, id);
+}
+
 static GPtrArray *
 gtk_css_animated_style_create_dynamic (GPtrArray   *animations,
                                       GtkCssStyle *style,
@@ -770,7 +874,6 @@ gtk_css_animated_style_find_animation (GtkStyleAnimation **animations,
 static GPtrArray *
 gtk_css_animated_style_create_css_animations (GPtrArray        *animations,
                                              GtkCssStyle      *base_style,
-                                              GtkCssStyle      *parent_style,
                                              gint64            timestamp,
                                              GtkStyleProvider *provider,
                                              GtkCssStyle      *source)
@@ -832,8 +935,6 @@ gtk_css_animated_style_create_css_animations (GPtrArray        *animations,
          if (keyframes == NULL)
            continue;

-          keyframes = _gtk_css_keyframes_compute (keyframes, provider, base_style, parent_style);
-
          animation = _gtk_css_animation_new (name,
                                              keyframes,
                                              timestamp,
@@ -844,7 +945,6 @@ gtk_css_animated_style_create_css_animations (GPtrArray        *animations,
                                              _gtk_css_play_state_value_get (_gtk_css_array_value_get_nth (play_states, i)),
                                              _gtk_css_fill_mode_value_get (_gtk_css_array_value_get_nth (fill_modes, i)),
                                              _gtk_css_number_value_get (_gtk_css_array_value_get_nth (iteration_counts, i), 100));
-          _gtk_css_keyframes_unref (keyframes);
        }

      if (!animations)
@@ -893,7 +993,7 @@ gtk_css_animated_style_new (GtkCssStyle      *base_style,
  if (previous_style != NULL)
    animations = gtk_css_animated_style_create_css_transitions (animations, base_style, timestamp, previous_style);

-  animations = gtk_css_animated_style_create_css_animations (animations, base_style, parent_style, timestamp, provider, previous_style);
+  animations = gtk_css_animated_style_create_css_animations (animations, base_style, timestamp, provider, previous_style);
  animations = gtk_css_animated_style_create_dynamic (animations, base_style, timestamp);

  if (animations == NULL)
@@ -902,6 +1002,9 @@ gtk_css_animated_style_new (GtkCssStyle      *base_style,
  result = g_object_new (GTK_TYPE_CSS_ANIMATED_STYLE, NULL);

  result->style = g_object_ref (base_style);
+  if (parent_style)
+    result->parent_style = g_object_ref (parent_style);
+  result->provider = g_object_ref (provider);
  result->current_time = timestamp;
  result->n_animations = animations->len;
  result->animations = g_ptr_array_free (animations, FALSE);
@@ -918,6 +1021,8 @@ gtk_css_animated_style_new (GtkCssStyle      *base_style,
  style->transition = (GtkCssTransitionValues *)gtk_css_values_ref ((GtkCssValues *)base_style->transition);
  style->size = (GtkCssSizeValues *)gtk_css_values_ref ((GtkCssValues *)base_style->size);
  style->other = (GtkCssOtherValues *)gtk_css_values_ref ((GtkCssValues *)base_style->other);
+  if (base_style->variables)
+    style->variables = gtk_css_variable_set_ref (base_style->variables);

  gtk_css_animated_style_apply_animations (result);

@@ -927,7 +1032,9 @@ gtk_css_animated_style_new (GtkCssStyle      *base_style,
 GtkCssStyle *
 gtk_css_animated_style_new_advance (GtkCssAnimatedStyle *source,
                                    GtkCssStyle         *base_style,
-                                    gint64               timestamp)
+                                    GtkCssStyle         *parent_style,
+                                    gint64               timestamp,
+                                    GtkStyleProvider    *provider)
 {
  GtkCssAnimatedStyle *result;
  GtkCssStyle *style;
@@ -936,6 +1043,8 @@ gtk_css_animated_style_new_advance (GtkCssAnimatedStyle *source,

  gtk_internal_return_val_if_fail (GTK_IS_CSS_ANIMATED_STYLE (source), NULL);
  gtk_internal_return_val_if_fail (GTK_IS_CSS_STYLE (base_style), NULL);
+  gtk_internal_return_val_if_fail (parent_style == NULL || GTK_IS_CSS_STYLE (parent_style), NULL);
+  gtk_internal_return_val_if_fail (GTK_IS_STYLE_PROVIDER (provider), NULL);

  if (timestamp == 0)
    return g_object_ref (source->style);
@@ -966,6 +1075,9 @@ gtk_css_animated_style_new_advance (GtkCssAnimatedStyle *source,
  result = g_object_new (GTK_TYPE_CSS_ANIMATED_STYLE, NULL);

  result->style = g_object_ref (base_style);
+  if (parent_style)
+    result->parent_style = g_object_ref (parent_style);
+  result->provider = g_object_ref (provider);
  result->current_time = timestamp;
  result->n_animations = animations->len;
  result->animations = g_ptr_array_free (animations, FALSE);
@@ -982,8 +1094,34 @@ gtk_css_animated_style_new_advance (GtkCssAnimatedStyle *source,
  style->transition = (GtkCssTransitionValues *)gtk_css_values_ref ((GtkCssValues *)base_style->transition);
  style->size = (GtkCssSizeValues *)gtk_css_values_ref ((GtkCssValues *)base_style->size);
  style->other = (GtkCssOtherValues *)gtk_css_values_ref ((GtkCssValues *)base_style->other);
+  if (base_style->variables)
+    style->variables = gtk_css_variable_set_ref (base_style->variables);

  gtk_css_animated_style_apply_animations (result);

  return GTK_CSS_STYLE (result);
 }
+
+GtkCssStyle *
+gtk_css_animated_style_get_base_style (GtkCssAnimatedStyle *style)
+{
+  gtk_internal_return_val_if_fail (GTK_IS_CSS_ANIMATED_STYLE (style), NULL);
+
+  return style->style;
+}
+
+GtkCssStyle *
+gtk_css_animated_style_get_parent_style (GtkCssAnimatedStyle *style)
+{
+  gtk_internal_return_val_if_fail (GTK_IS_CSS_ANIMATED_STYLE (style), NULL);
+
+  return style->parent_style;
+}
+
+GtkStyleProvider *
+gtk_css_animated_style_get_provider (GtkCssAnimatedStyle *style)
+{
+  gtk_internal_return_val_if_fail (GTK_IS_CSS_ANIMATED_STYLE (style), NULL);
+
+  return style->provider;
+}
@@ -38,6 +38,8 @@ struct _GtkCssAnimatedStyle
  GtkCssStyle parent;

  GtkCssStyle           *style;                /* the style if we weren't animating */
+  GtkCssStyle           *parent_style;
+  GtkStyleProvider      *provider;

  gint64                 current_time;         /* the current time in our world */
  gpointer              *animations;           /* GtkStyleAnimation**, least important one first */
@@ -57,15 +59,26 @@ GtkCssStyle *           gtk_css_animated_style_new              (GtkCssStyle
                                                                 GtkStyleProvider       *provider,
                                                                 GtkCssStyle            *previous_style);
 GtkCssStyle *           gtk_css_animated_style_new_advance      (GtkCssAnimatedStyle    *source,
-                                                                 GtkCssStyle            *base,
-                                                                 gint64                  timestamp);
+                                                                 GtkCssStyle            *base_style,
+                                                                 GtkCssStyle            *parent_style,
+                                                                 gint64                  timestamp,
+                                                                 GtkStyleProvider       *provider);

 void                    gtk_css_animated_style_set_animated_value(GtkCssAnimatedStyle   *style,
                                                                 guint                   id,
                                                                 GtkCssValue            *value);
-
 GtkCssValue *           gtk_css_animated_style_get_intrinsic_value (GtkCssAnimatedStyle *style,
                                                                 guint                   id);

+void                    gtk_css_animated_style_set_animated_custom_value (GtkCssAnimatedStyle *animated,
+                                                                 int                     id,
+                                                                 GtkCssVariableValue    *value);
+GtkCssVariableValue *   gtk_css_animated_style_get_intrinsic_custom_value (GtkCssAnimatedStyle *style,
+                                                                 int                     id);
+
+GtkCssStyle *           gtk_css_animated_style_get_base_style   (GtkCssAnimatedStyle    *style);
+GtkCssStyle *           gtk_css_animated_style_get_parent_style (GtkCssAnimatedStyle    *style);
+GtkStyleProvider *      gtk_css_animated_style_get_provider     (GtkCssAnimatedStyle    *style);
+
 G_END_DECLS

@@ -90,6 +90,9 @@ gtk_css_animation_apply_values (GtkStyleAnimation    *style_animation,
                                GtkCssAnimatedStyle  *style)
 {
  GtkCssAnimation *animation = (GtkCssAnimation *)style_animation;
+  GtkCssStyle *base_style, *parent_style;
+  GtkStyleProvider *provider;
+  GtkCssKeyframes *resolved_keyframes;
  double progress;
  guint i;

@@ -99,19 +102,49 @@ gtk_css_animation_apply_values (GtkStyleAnimation    *style_animation,
  progress = gtk_css_animation_get_progress (animation);
  progress = _gtk_css_ease_value_transform (animation->ease, progress);

-  for (i = 0; i < _gtk_css_keyframes_get_n_properties (animation->keyframes); i++)
+  base_style = gtk_css_animated_style_get_base_style (style);
+  parent_style = gtk_css_animated_style_get_parent_style (style);
+  provider = gtk_css_animated_style_get_provider (style);
+  resolved_keyframes = _gtk_css_keyframes_compute (animation->keyframes,
+                                                   provider,
+                                                   base_style,
+                                                   parent_style);
+
+  for (i = 0; i < _gtk_css_keyframes_get_n_variables (resolved_keyframes); i++)
+    {
+      GtkCssVariableValue *value;
+      int variable_id;
+
+      variable_id = _gtk_css_keyframes_get_variable_id (resolved_keyframes, i);
+
+      value = _gtk_css_keyframes_get_variable (resolved_keyframes,
+                                               i,
+                                               progress,
+                                               gtk_css_animated_style_get_intrinsic_custom_value (style, variable_id));
+
+      if (!value)
+        continue;
+
+      gtk_css_animated_style_set_animated_custom_value (style, variable_id, value);
+
+      gtk_css_variable_value_unref (value);
+    }
+
+  for (i = 0; i < _gtk_css_keyframes_get_n_properties (resolved_keyframes); i++)
    {
      GtkCssValue *value;
      guint property_id;
      
-      property_id = _gtk_css_keyframes_get_property_id (animation->keyframes, i);
+      property_id = _gtk_css_keyframes_get_property_id (resolved_keyframes, i);

-      value = _gtk_css_keyframes_get_value (animation->keyframes,
+      value = _gtk_css_keyframes_get_value (resolved_keyframes,
                                            i,
                                            progress,
                                            gtk_css_animated_style_get_intrinsic_value (style, property_id));
      gtk_css_animated_style_set_animated_value (style, property_id, value);
    }
+
+  _gtk_css_keyframes_unref (resolved_keyframes);
 }

 static gboolean
@@ -41,11 +41,12 @@ gtk_css_value_array_free (GtkCssValue *value)
 }

 static GtkCssValue *
-gtk_css_value_array_compute (GtkCssValue      *value,
-                             guint             property_id,
-                             GtkStyleProvider *provider,
-                             GtkCssStyle      *style,
-                             GtkCssStyle      *parent_style)
+gtk_css_value_array_compute (GtkCssValue       *value,
+                             guint              property_id,
+                             GtkStyleProvider  *provider,
+                             GtkCssStyle       *style,
+                             GtkCssStyle       *parent_style,
+                             GtkCssVariableSet *variables)
 {
  GtkCssValue *result;
  GtkCssValue *i_value;
@@ -54,7 +55,7 @@ gtk_css_value_array_compute (GtkCssValue      *value,
  result = NULL;
  for (i = 0; i < value->n_values; i++)
    {
-      i_value =  _gtk_css_value_compute (value->values[i], property_id, provider, style, parent_style);
+      i_value =  _gtk_css_value_compute (value->values[i], property_id, provider, style, parent_style, variables);

      if (result == NULL &&
 	  i_value != value->values[i])
@@ -402,10 +403,13 @@ _gtk_css_array_value_new_from_array (GtkCssValue **values,
  for (i = 0; i < n_values; i ++)
    {
      if (!gtk_css_value_is_computed (values[i]))
-        {
-          result->is_computed = FALSE;
-          break;
-        }
+        result->is_computed = FALSE;
+
+      if (gtk_css_value_contains_variables (values[i]))
+        result->contains_variables = TRUE;
+
+      if (!result->is_computed && result->contains_variables)
+        break;
    }

  return result;
@@ -467,3 +471,4 @@ _gtk_css_array_value_get_n_values (const GtkCssValue *value)
  return value->n_values;
 }

+
@@ -41,11 +41,12 @@ gtk_css_value_bg_size_free (GtkCssValue *value)
 }

 static GtkCssValue *
-gtk_css_value_bg_size_compute (GtkCssValue      *value,
-                               guint             property_id,
-                               GtkStyleProvider *provider,
-                               GtkCssStyle      *style,
-                               GtkCssStyle      *parent_style)
+gtk_css_value_bg_size_compute (GtkCssValue       *value,
+                               guint              property_id,
+                               GtkStyleProvider  *provider,
+                               GtkCssStyle       *style,
+                               GtkCssStyle       *parent_style,
+                               GtkCssVariableSet *variables)
 {
  GtkCssValue *x, *y;

@@ -55,10 +56,10 @@ gtk_css_value_bg_size_compute (GtkCssValue      *value,
  x = y = NULL;

  if (value->x)
-    x = _gtk_css_value_compute (value->x, property_id, provider, style, parent_style);
+    x = _gtk_css_value_compute (value->x, property_id, provider, style, parent_style, variables);

  if (value->y)
-    y = _gtk_css_value_compute (value->y, property_id, provider, style, parent_style);
+    y = _gtk_css_value_compute (value->y, property_id, provider, style, parent_style, variables);

  if (x == value->x && y == value->y)
    {
@@ -163,9 +164,9 @@ static const GtkCssValueClass GTK_CSS_VALUE_BG_SIZE = {
  gtk_css_value_bg_size_print
 };

-static GtkCssValue auto_singleton = { &GTK_CSS_VALUE_BG_SIZE, 1, TRUE, FALSE, FALSE, NULL, NULL };
-static GtkCssValue cover_singleton = { &GTK_CSS_VALUE_BG_SIZE, 1, TRUE, TRUE, FALSE, NULL, NULL };
-static GtkCssValue contain_singleton = { &GTK_CSS_VALUE_BG_SIZE, 1, TRUE, FALSE, TRUE, NULL, NULL };
+static GtkCssValue auto_singleton = { &GTK_CSS_VALUE_BG_SIZE, 1, TRUE, FALSE, FALSE, FALSE, NULL, NULL };
+static GtkCssValue cover_singleton = { &GTK_CSS_VALUE_BG_SIZE, 1, TRUE, FALSE, TRUE, FALSE, NULL, NULL };
+static GtkCssValue contain_singleton = { &GTK_CSS_VALUE_BG_SIZE, 1, TRUE, FALSE, FALSE, TRUE, NULL, NULL };

 GtkCssValue *
 _gtk_css_bg_size_value_new (GtkCssValue *x,
@@ -42,11 +42,12 @@ gtk_css_value_border_free (GtkCssValue *value)
 }

 static GtkCssValue *
-gtk_css_value_border_compute (GtkCssValue      *value,
-                              guint             property_id,
-                              GtkStyleProvider *provider,
-                              GtkCssStyle      *style,
-                              GtkCssStyle      *parent_style)
+gtk_css_value_border_compute (GtkCssValue       *value,
+                              guint              property_id,
+                              GtkStyleProvider  *provider,
+                              GtkCssStyle       *style,
+                              GtkCssStyle       *parent_style,
+                              GtkCssVariableSet *variables)
 {
  GtkCssValue *values[4];
  GtkCssValue *computed;
@@ -57,7 +58,7 @@ gtk_css_value_border_compute (GtkCssValue      *value,
    {
      if (value->values[i])
        {
-          values[i] = _gtk_css_value_compute (value->values[i], property_id, provider, style, parent_style);
+          values[i] = _gtk_css_value_compute (value->values[i], property_id, provider, style, parent_style, variables);
          changed |= (values[i] != value->values[i]);
        }
      else
@@ -260,3 +261,4 @@ _gtk_css_border_value_get_left (const GtkCssValue *value)
  return value->values[GTK_CSS_LEFT];
 }

+
--- a/Show More
+++ b/Show More