Don't allow duplicate shortcuts for widget classes

Make gtk_widget_class_add_shortcut() remove an existing shortcut with the same trigger before adding the new shortcut. Whenever this happens, this is most likely the intention. Fixes: #4130
2021-08-03 15:40:37 -04:00
272 changed files with 64032 additions and 56357 deletions
@@ -25,7 +25,7 @@ variables:
  BACKEND_FLAGS: "-Dx11-backend=true -Dwayland-backend=true -Dbroadway-backend=true"
  FEATURE_FLAGS: "-Dvulkan=enabled -Dcloudproviders=enabled"
  MESON_TEST_TIMEOUT_MULTIPLIER: 3
-  FEDORA_IMAGE: "registry.gitlab.gnome.org/gnome/gtk/fedora:v33"
+  FEDORA_IMAGE: "registry.gitlab.gnome.org/gnome/gtk/fedora:v32"
  FLATPAK_IMAGE: "registry.gitlab.gnome.org/gnome/gnome-runtime-images/gnome:master"

 .only-default:
@@ -48,9 +48,7 @@ RUN dnf -y install \
    libcloudproviders-devel \
    libepoxy-devel \
    libffi-devel \
-    libjpeg-turbo-devel \
    libmount-devel \
-    libpng-devel \
    librsvg2 \
    libselinux-devel \
    libubsan \
@@ -40,7 +40,7 @@ export CCACHE_DIR="${CCACHE_BASEDIR}/_ccache"
 # https://gitlab.gnome.org/GNOME/gtk/-/issues/2243
 # https://gitlab.gnome.org/GNOME/gtk/-/issues/3002

-if ! pkg-config --atleast-version=2.66.0 glib-2.0; then
+if ! pkg-config --atleast-version=2.65.0 glib-2.0; then
    git clone https://gitlab.gnome.org/GNOME/glib.git _glib
    meson setup _glib_build _glib
    meson compile -C _glib_build
@@ -48,7 +48,7 @@ if ! pkg-config --atleast-version=2.66.0 glib-2.0; then
 fi
 pkg-config --modversion glib-2.0

-if ! pkg-config --atleast-version=1.49.1 pango; then
+if ! pkg-config --atleast-version=1.47.0 pango; then
    git clone https://gitlab.gnome.org/GNOME/pango.git _pango
    meson setup _pango_build _pango
    meson compile -C _pango_build
@@ -1,84 +1,3 @@
-Overview of Changes
-===================
-
-* gsk:
- - Drop the GL renderer in favor of NGL
-
-* css:
- - Add support for line-height
- - Add support for text-transform
-
-* GtkTextView:
- - Add support for line height
- - Add support for text transforms
-
-* Build:
- - Require Pango 1.49
-
-
-Overview of Changes in 4.4.0
-============================
-
-* Input:
- - Match IBus for display of Compose sequences
- - Match IBus for handling of mismatches
- - Handle Escape in Compose sequences
- - Allow multiple dead keys
- - Support 32bit keysyms
-
-* GtkCheckButton:
- - Activate when moving focus
-
-* GtkLabel:
- - Propertly ignore double underscores for mnemonics
-
-* GtkPopoverMenu:
- - Fix focus cycling
-
-* GtkTextView:
- - Improve word selection
- - Fix block cursors on empty lines
-
-* GdkToplevel:
- - Support the gnome-shell titlebar gesture protocol
-
-* GdkDropTarget:
- - Allow creating drop targets in ui files
-
-* gsk:
- - Handle partial color fonts correctly
- - Use harfbuzz for color font information
- - Avoid pango for glyph cache rendering
- - Shrink shadow extents
-
-* Settings:
- - Change the default for gtk-split-cursor to FALSE
-
-* Demos:
- - Small improvements to widget-factory
- - gtk-demo: Improve the hypertext demo
- - gtk-dem: Improve the clipboard demo
-
-* X11:
- - Set WM_CLASS on toplevels
-
-* Wayland:
- - Support wl_seat v7
-
-* Windows:
- - Drop the local DND protocol
- - Avoid WGL if shaders don't work
- - Use WinPointer API
-
-* Translation updates:
- Belarusian
- Friulian
- Hebrew
- Khmer
- Persian
- Polish
-
-
 Overview of Changes in 4.3.2
 ============================

@@ -321,7 +321,6 @@
    <file>paintable_emblem.c</file>
    <file>paintable_mediastream.c</file>
    <file>paintable_svg.c</file>
-    <file>paintable_symbolic.c</file>
    <file>panes.c</file>
    <file>password_entry.c</file>
    <file>peg_solitaire.c</file>
@@ -100,11 +100,7 @@ prepare_drag (GtkDragSource *source,
  DemoImage *demo = DEMO_IMAGE (widget);
  GdkPaintable *paintable = get_image_paintable (GTK_IMAGE (demo->image));

-  /* Textures can be serialized, paintables can't, so special case the textures */
-  if (GDK_IS_TEXTURE (paintable))
-    return gdk_content_provider_new_typed (GDK_TYPE_TEXTURE, paintable);
-  else
-    return gdk_content_provider_new_typed (GDK_TYPE_PAINTABLE, paintable);
+  return gdk_content_provider_new_typed (GDK_TYPE_PAINTABLE, paintable);
 }

 static gboolean
@@ -133,11 +129,7 @@ copy_image (GtkWidget *widget,
  GdkPaintable *paintable = get_image_paintable (GTK_IMAGE (demo->image));
  GValue value = G_VALUE_INIT;

-  /* Textures can be serialized, paintables can't, so special case the textures */
-  if (GDK_IS_TEXTURE (paintable))
-    g_value_init (&value, GDK_TYPE_TEXTURE);
-  else
-    g_value_init (&value, GDK_TYPE_PAINTABLE);
+  g_value_init (&value, GDK_TYPE_PAINTABLE);
  g_value_set_object (&value, paintable);
  gdk_clipboard_set_value (clipboard, &value);
  g_value_unset (&value);
@@ -146,46 +138,24 @@ copy_image (GtkWidget *widget,
    g_object_unref (paintable);
 }

-static void
-paste_image_cb (GObject      *source,
-                GAsyncResult *result,
-                gpointer      data)
-{
-  GdkClipboard *clipboard = GDK_CLIPBOARD (source);
-  DemoImage *demo = DEMO_IMAGE (data);
-  const GValue *value;
-
-  value = gdk_clipboard_read_value_finish (clipboard, result, NULL);
-  if (value == NULL)
-    {
-      gtk_widget_error_bell (GTK_WIDGET (demo));
-      g_object_unref (demo);
-      return;
-    }
-
-  gtk_image_set_from_paintable (GTK_IMAGE (demo->image), g_value_get_object (value));
-  g_object_unref (demo);
-}
-
 static void
 paste_image (GtkWidget *widget,
             const char *action_name,
             GVariant *parameter)
 {
  GdkClipboard *clipboard = gtk_widget_get_clipboard (widget);
-  GType type;
+  DemoImage *demo = DEMO_IMAGE (widget);
+  GdkContentProvider *content = gdk_clipboard_get_content (clipboard);
+  GValue value = G_VALUE_INIT;
+  GdkPaintable *paintable;

-  if (gdk_content_formats_contain_gtype (gdk_clipboard_get_formats (clipboard), GDK_TYPE_TEXTURE))
-    type = GDK_TYPE_TEXTURE;
-  else
-    type = GDK_TYPE_PAINTABLE;
+  g_value_init (&value, GDK_TYPE_PAINTABLE);
+  if (!gdk_content_provider_get_value (content, &value, NULL))
+    return;

-  gdk_clipboard_read_value_async (clipboard, 
-                                  type,
-                                  G_PRIORITY_DEFAULT,
-                                  NULL,
-                                  paste_image_cb,
-                                  g_object_ref (widget));
+  paintable = GDK_PAINTABLE (g_value_get_object (&value));
+  gtk_image_set_from_paintable (GTK_IMAGE (demo->image), paintable);
+  g_value_unset (&value);
 }

 static void
@@ -131,19 +131,6 @@ insert_tags_for_attributes (GtkTextBuffer     *buffer,
      gtk_text_buffer_apply_tag (buffer, tag, start, end); \
    }

-#define VOID_ATTR(attr_name) \
-    { \
-      tag = gtk_text_tag_table_lookup (table, #attr_name); \
-      if (!tag) \
-        { \
-          tag = gtk_text_tag_new (#attr_name); \
-          g_object_set (tag, #attr_name, TRUE, NULL); \
-          gtk_text_tag_table_add (table, tag); \
-          g_object_unref (tag); \
-        } \
-      gtk_text_buffer_apply_tag (buffer, tag, start, end); \
-    }
-
  fg_alpha = bg_alpha = 1.;

  attrs = pango_attr_iterator_get_attrs (iter);
@@ -268,29 +255,6 @@ insert_tags_for_attributes (GtkTextBuffer     *buffer,
          INT_ATTR (insert_hyphens);
          break;

-        case PANGO_ATTR_LINE_HEIGHT:
-          FLOAT_ATTR (line_height);
-          break;
-
-        case PANGO_ATTR_ABSOLUTE_LINE_HEIGHT:
-          break;
-
-        case PANGO_ATTR_WORD:
-          VOID_ATTR (word);
-          break;
-
-        case PANGO_ATTR_SENTENCE:
-          VOID_ATTR (sentence);
-          break;
-
-        case PANGO_ATTR_BASELINE_SHIFT:
-          INT_ATTR (baseline_shift);
-          break;
-
-        case PANGO_ATTR_FONT_SCALE:
-          INT_ATTR (font_scale);
-          break;
-
        case PANGO_ATTR_SHAPE:
        case PANGO_ATTR_ABSOLUTE_SIZE:
        case PANGO_ATTR_GRAVITY:
@@ -299,10 +263,6 @@ insert_tags_for_attributes (GtkTextBuffer     *buffer,
        case PANGO_ATTR_BACKGROUND_ALPHA:
          break;

-        case PANGO_ATTR_TEXT_TRANSFORM:
-          INT_ATTR (text_transform);
-          break;
-
        case PANGO_ATTR_INVALID:
        default:
          g_assert_not_reached ();
@@ -1,11 +1,6 @@
 /* Pango/Font Rendering
 *
- * Demonstrates various aspects of font rendering,
- * such as hinting, antialiasing and grid alignment.
- *
- * The demo lets you explore font rendering options
- * interactively to get a feeling for they affect the
- * shape and positioning of the glyphs.
+ * Demonstrates various aspects of font rendering.
 */

 #include <gtk/gtk.h>
@@ -15,21 +10,16 @@ static GtkWidget *font_button = NULL;
 static GtkWidget *entry = NULL;
 static GtkWidget *image = NULL;
 static GtkWidget *hinting = NULL;
-static GtkWidget *anti_alias = NULL;
 static GtkWidget *hint_metrics = NULL;
 static GtkWidget *up_button = NULL;
 static GtkWidget *down_button = NULL;
 static GtkWidget *text_radio = NULL;
 static GtkWidget *show_grid = NULL;
 static GtkWidget *show_extents = NULL;
-static GtkWidget *show_pixels = NULL;
-static GtkWidget *show_outlines = NULL;

 static PangoContext *context;

-static int scale = 7;
-static double pixel_alpha = 1.0;
-static double outline_alpha = 0.0;
+static int scale = 9;

 static void
 update_image (void)
@@ -47,8 +37,6 @@ update_image (void)
  cairo_font_options_t *fopt;
  cairo_hint_style_t hintstyle;
  cairo_hint_metrics_t hintmetrics;
-  cairo_antialias_t antialias;
-  cairo_path_t *path;

  if (!context)
    context = gtk_widget_create_pango_context (image);
@@ -77,13 +65,6 @@ update_image (void)
    hintmetrics = CAIRO_HINT_METRICS_OFF;
  cairo_font_options_set_hint_metrics (fopt, hintmetrics);

-  if (gtk_check_button_get_active (GTK_CHECK_BUTTON (anti_alias)))
-    antialias = CAIRO_ANTIALIAS_GRAY;
-  else
-    antialias = CAIRO_ANTIALIAS_NONE;
-  cairo_font_options_set_antialias (fopt, antialias);
-
-  pango_context_set_round_glyph_positions (context, hintmetrics == CAIRO_HINT_METRICS_ON);
  pango_cairo_context_set_font_options (context, fopt);
  cairo_font_options_destroy (fopt);
  pango_context_changed (context);
@@ -104,14 +85,10 @@ update_image (void)
      cairo_set_source_rgb (cr, 1, 1, 1);
      cairo_paint (cr);

-      cairo_set_source_rgba (cr, 0, 0, 0, pixel_alpha);
-
+      cairo_set_source_rgb (cr, 0, 0, 0);
      cairo_move_to (cr, 10, 10);
      pango_cairo_show_layout (cr, layout);

-      pango_cairo_layout_path (cr, layout);
-      path = cairo_copy_path (cr);
-
      cairo_destroy (cr);
      g_object_unref (layout);

@@ -150,7 +127,7 @@ update_image (void)

      if (gtk_check_button_get_active (GTK_CHECK_BUTTON (show_extents)))
        {
-          cairo_set_source_rgb (cr, 0, 0, 1);
+          cairo_set_source_rgba (cr, 0, 0, 1, 1);

          cairo_rectangle (cr,
                           scale * (10 + pango_units_to_double (logical.x)) - 0.5,
@@ -163,7 +140,7 @@ update_image (void)
          cairo_line_to (cr, scale * (10 + pango_units_to_double (logical.x + logical.width)) + 1,
                             scale * (10 + pango_units_to_double (baseline)) - 0.5);
          cairo_stroke (cr);
-          cairo_set_source_rgb (cr, 1, 0, 0);
+          cairo_set_source_rgba (cr, 1, 0, 0, 1);
          cairo_rectangle (cr,
                           scale * (10 + pango_units_to_double (pink.x)) + 0.5,
                           scale * (10 + pango_units_to_double (pink.y)) + 0.5,
@@ -172,36 +149,8 @@ update_image (void)
          cairo_stroke (cr);
        }

-      for (int i = 0; i < path->num_data; i += path->data[i].header.length)
-        {
-          cairo_path_data_t *data = &path->data[i];
-          switch (data->header.type)
-            {
-            case CAIRO_PATH_CURVE_TO:
-              data[3].point.x *= scale; data[3].point.y *= scale;
-              data[2].point.x *= scale; data[2].point.y *= scale;
-              data[1].point.x *= scale; data[1].point.y *= scale;
-              break;
-            case CAIRO_PATH_LINE_TO:
-            case CAIRO_PATH_MOVE_TO:
-              data[1].point.x *= scale; data[1].point.y *= scale;
-              break;
-            case CAIRO_PATH_CLOSE_PATH:
-              break;
-            default:
-              g_assert_not_reached ();
-            }
-        }
-
-      cairo_set_source_rgba (cr, 0, 0, 1, outline_alpha);
-      cairo_move_to (cr, scale * 20 - 0.5, scale * 20 - 0.5);
-      cairo_append_path (cr, path);
-      cairo_stroke (cr);
-
      cairo_surface_destroy (surface);
      cairo_destroy (cr);
-
-      cairo_path_destroy (path);
    }
  else
    {
@@ -209,26 +158,10 @@ update_image (void)
      PangoLayoutRun *run;
      PangoGlyphInfo *g;
      int i, j;
-      GString *str;
-      gunichar ch;
-
-      if (*text == '\0')
-        text = " ";
-
-      ch = g_utf8_get_char (text);
-
-      str = g_string_new ("");
-
-      for (i = 0; i < 4; i++)
-        {
-          g_string_append_unichar (str, ch);
-          g_string_append_unichar (str, 0x200c);
-        }

      layout = pango_layout_new (context);
      pango_layout_set_font_description (layout, desc);
-      pango_layout_set_text (layout, str->str, -1);
-      g_string_free (str, TRUE);
+      pango_layout_set_text (layout, "aaaa", -1);
      pango_layout_get_extents (layout, &ink, &logical);
      pango_extents_to_pixels (&logical, NULL);

@@ -243,7 +176,7 @@ update_image (void)
      cairo_set_source_rgb (cr, 0, 0, 0);
      for (i = 0; i < 4; i++)
        {
-          g = &(run->glyphs->glyphs[2*i]);
+          g = &(run->glyphs->glyphs[i]);
          g->geometry.width = PANGO_UNITS_ROUND (g->geometry.width * 3 / 2);
        }

@@ -251,7 +184,7 @@ update_image (void)
        {
          for (i = 0; i < 4; i++)
            {
-              g = &(run->glyphs->glyphs[2*i]);
+              g = &(run->glyphs->glyphs[i]);
              g->geometry.x_offset = i * (PANGO_SCALE / 4);
              g->geometry.y_offset = j * (PANGO_SCALE / 4);
            }
@@ -270,6 +203,7 @@ update_image (void)
      cairo_surface_destroy (surface);
    }

+
  gtk_picture_set_pixbuf (GTK_PICTURE (image), pixbuf2);

  g_object_unref (pixbuf2);
@@ -277,78 +211,6 @@ update_image (void)
  pango_font_description_free (desc);
 }

-static gboolean fading = FALSE;
-static double start_pixel_alpha;
-static double end_pixel_alpha;
-static double start_outline_alpha;
-static double end_outline_alpha;
-static gint64 start_time;
-static gint64 end_time;
-
-static double
-ease_out_cubic (double t)
-{
-  double p = t - 1;
-  return p * p * p + 1;
-}
-
-static gboolean
-change_alpha (GtkWidget     *widget,
-              GdkFrameClock *clock,
-              gpointer       user_data)
-{
-  gint64 now = g_get_monotonic_time ();
-  double t;
-
-  t = ease_out_cubic ((now - start_time) / (double) (end_time - start_time));
-
-  pixel_alpha = start_pixel_alpha + (end_pixel_alpha - start_pixel_alpha) * t;
-  outline_alpha = start_outline_alpha + (end_outline_alpha - start_outline_alpha) * t;
-
-  update_image ();
-
-  if (now >= end_time)
-    {
-      fading = FALSE;
-      return G_SOURCE_REMOVE;
-    }
-
-  return G_SOURCE_CONTINUE;
-}
-
-static void
-start_alpha_fade (void)
-{
-  gboolean pixels;
-  gboolean outlines;
-
-  if (fading)
-    return;
-
-  pixels = gtk_check_button_get_active (GTK_CHECK_BUTTON (show_pixels));
-  outlines = gtk_check_button_get_active (GTK_CHECK_BUTTON (show_outlines));
-
-  start_pixel_alpha = pixel_alpha;
-  if (pixels && outlines)
-    end_pixel_alpha = 0.5;
-  else if (pixels)
-    end_pixel_alpha = 1;
-  else
-    end_pixel_alpha = 0;
-
-  start_outline_alpha = outline_alpha;
-  if (outlines)
-    end_outline_alpha = 1.0;
-  else
-    end_outline_alpha = 0.0;
-
-  start_time = g_get_monotonic_time ();
-  end_time = start_time + G_TIME_SPAN_SECOND / 2;
-
-  fading = TRUE;
-  gtk_widget_add_tick_callback (window, change_alpha, NULL, NULL);
-}
-
 static void
 update_buttons (void)
 {
@@ -356,26 +218,20 @@ update_buttons (void)
  gtk_widget_set_sensitive (down_button, scale > 1);
 }

-static gboolean
-scale_up (GtkWidget *widget,
-          GVariant  *args,
-          gpointer   user_data)
+static void
+scale_up (void)
 {
  scale += 1;
  update_buttons ();
  update_image ();
-  return TRUE;
 }

-static gboolean
-scale_down (GtkWidget *widget,
-            GVariant  *args,
-            gpointer   user_data)
+static void
+scale_down (void)
 {
  scale -= 1;
  update_buttons ();
  update_image ();
-  return TRUE;
 }

 GtkWidget *
@@ -396,26 +252,20 @@ do_fontrendering (GtkWidget *do_widget)
      entry = GTK_WIDGET (gtk_builder_get_object (builder, "entry"));
      image = GTK_WIDGET (gtk_builder_get_object (builder, "image"));
      hinting = GTK_WIDGET (gtk_builder_get_object (builder, "hinting"));
-      anti_alias = GTK_WIDGET (gtk_builder_get_object (builder, "antialias"));
      hint_metrics = GTK_WIDGET (gtk_builder_get_object (builder, "hint_metrics"));
      text_radio = GTK_WIDGET (gtk_builder_get_object (builder, "text_radio"));
      show_grid = GTK_WIDGET (gtk_builder_get_object (builder, "show_grid"));
      show_extents = GTK_WIDGET (gtk_builder_get_object (builder, "show_extents"));
-      show_pixels = GTK_WIDGET (gtk_builder_get_object (builder, "show_pixels"));
-      show_outlines = GTK_WIDGET (gtk_builder_get_object (builder, "show_outlines"));

      g_signal_connect (up_button, "clicked", G_CALLBACK (scale_up), NULL);
      g_signal_connect (down_button, "clicked", G_CALLBACK (scale_down), NULL);
      g_signal_connect (entry, "notify::text", G_CALLBACK (update_image), NULL);
      g_signal_connect (font_button, "notify::font-desc", G_CALLBACK (update_image), NULL);
      g_signal_connect (hinting, "notify::active", G_CALLBACK (update_image), NULL);
-      g_signal_connect (anti_alias, "notify::active", G_CALLBACK (update_image), NULL);
      g_signal_connect (hint_metrics, "notify::active", G_CALLBACK (update_image), NULL);
      g_signal_connect (text_radio, "notify::active", G_CALLBACK (update_image), NULL);
      g_signal_connect (show_grid, "notify::active", G_CALLBACK (update_image), NULL);
      g_signal_connect (show_extents, "notify::active", G_CALLBACK (update_image), NULL);
-      g_signal_connect (show_pixels, "notify::active", G_CALLBACK (start_alpha_fade), NULL);
-      g_signal_connect (show_outlines, "notify::active", G_CALLBACK (start_alpha_fade), NULL);

      update_image ();

@@ -1,8 +1,13 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
+  <object class="GtkAdjustment" id="scale_adj">
+    <property name="upper">24</property>
+    <property name="step-increment">1</property>
+    <property name="page-increment">4</property>
+  </object>
  <object class="GtkWindow" id="window">
-    <property name="default-width">1024</property>
-    <property name="default-height">768</property>
+    <property name="default-width">1080</property>
+    <property name="default-height">430</property>
    <child type="titlebar">
      <object class="GtkHeaderBar">
        <child type="title">
@@ -82,94 +87,57 @@
              </object>
            </child>
            <child>
-              <object class="GtkCheckButton" id="show_pixels">
-                <property name="label">Show _Pixels</property>
-                <property name="use-underline">1</property>
-                <property name="active">1</property>
+              <object class="GtkLabel">
+                <property name="label">Hinting</property>
+                <property name="xalign">1</property>
+                <style>
+                  <class name="dim-label"/>
+                </style>
                <layout>
                  <property name="column">3</property>
-                  <property name="row">0</property>
                </layout>
              </object>
            </child>
            <child>
-              <object class="GtkCheckButton" id="show_outlines">
-                <property name="label">Show _Outline</property>
-                <property name="use-underline">1</property>
-                <layout>
-                  <property name="column">3</property>
-                  <property name="row">1</property>
-                </layout>
-              </object>
-            </child>
-            <child>
-              <object class="GtkBox">
-                <property name="spacing">6</property>
-                <child>
-                  <object class="GtkLabel">
-                    <property name="label">_Hinting</property>
-                    <property name="use-underline">1</property>
-                    <property name="mnemonic-widget">hinting</property>
-                    <style>
-                      <class name="dim-label"/>
-                    </style>
-                  </object>
-                </child>
-                <child>
-                  <object class="GtkComboBoxText" id="hinting">
-                    <property name="active">0</property>
-                    <property name="valign">center</property>
-                    <items>
-                      <item translatable="yes" id="none">None</item>
-                      <item translatable="yes" id="slight">Slight</item>
-                      <item translatable="yes" id="medium">Medium</item>
-                      <item translatable="yes" id="full">Full</item>
-                    </items>
-                  </object>
-                </child>
+              <object class="GtkComboBoxText" id="hinting">
+                <property name="active">0</property>
+                <property name="valign">center</property>
+                <items>
+                  <item translatable="yes" id="none">None</item>
+                  <item translatable="yes" id="slight">Slight</item>
+                  <item translatable="yes" id="medium">Medium</item>
+                  <item translatable="yes" id="full">Full</item>
+                </items>
                <layout>
                  <property name="column">4</property>
-                  <property name="column-span">2</property>
-                </layout>
-              </object>
-            </child>
-            <child>
-              <object class="GtkCheckButton" id="antialias">
-                <property name="label">_Antialias</property>
-                <property name="use-underline">1</property>
-                <property name="active">1</property>
-                <layout>
-                  <property name="column">4</property>
-                  <property name="row">1</property>
                </layout>
              </object>
            </child>
            <child>
              <object class="GtkCheckButton" id="hint_metrics">
-                <property name="label">Hint _Metrics</property>
-                <property name="use-underline">1</property>
+                <property name="label">Hint Metrics</property>
                <layout>
-                  <property name="column">5</property>
+                  <property name="column">4</property>
                  <property name="row">1</property>
                </layout>
              </object>
            </child>
            <child>
              <object class="GtkCheckButton" id="show_extents">
-                <property name="label">Show _Extents</property>
-                <property name="use-underline">1</property>
+                <property name="label">Show Extents</property>
+                <property name="active">1</property>
                <layout>
-                  <property name="column">6</property>
+                  <property name="column">5</property>
                  <property name="row">0</property>
                </layout>
              </object>
            </child>
            <child>
              <object class="GtkCheckButton" id="show_grid">
-                <property name="label">Show _Grid</property>
-                <property name="use-underline">1</property>
+                <property name="active">1</property>
+                <property name="label">Show Grid</property>
                <layout>
-                  <property name="column">6</property>
+                  <property name="column">5</property>
                  <property name="row">1</property>
                </layout>
              </object>
@@ -180,19 +148,8 @@
                <style>
                  <class name="circular"/>
                </style>
-                <child>
-                  <object class="GtkShortcutController">
-                    <property name="scope">managed</property>
-                    <child>
-                      <object class="GtkShortcut">
-                        <property name="trigger">&lt;Control&gt;plus</property>
-                        <property name="action">activate</property>
-                      </object>
-                    </child>
-                  </object>
-                </child>
                <layout>
-                  <property name="column">7</property>
+                  <property name="column">6</property>
                  <property name="row">0</property>
                </layout>
              </object>
@@ -203,19 +160,8 @@
                <style>
                  <class name="circular"/>
                </style>
-                <child>
-                  <object class="GtkShortcutController">
-                    <property name="scope">managed</property>
-                    <child>
-                      <object class="GtkShortcut">
-                        <property name="trigger">&lt;Control&gt;minus</property>
-                        <property name="action">activate</property>
-                      </object>
-                    </child>
-                  </object>
-                </child>
                <layout>
-                  <property name="column">7</property>
+                  <property name="column">6</property>
                  <property name="row">1</property>
                </layout>
              </object>
@@ -224,7 +170,7 @@
              <object class="GtkLabel">
                <property name="hexpand">1</property>
                <layout>
-                  <property name="column">8</property>
+                  <property name="column">7</property>
                </layout>
              </object>
            </child>
@@ -61,26 +61,12 @@ show_page (GtkTextView *text_view,
           int          page)
 {
  GtkTextBuffer *buffer;
-  GtkTextIter iter, start;
-  GtkTextMark *mark;
+  GtkTextIter iter;
  GtkWidget *child;
  GtkTextChildAnchor *anchor;
  GtkEventController *controller;
-  GtkTextTag *bold, *mono, *nobreaks;

  buffer = gtk_text_view_get_buffer (text_view);
-
-  bold = gtk_text_buffer_create_tag (buffer, NULL,
-                                     "weight", PANGO_WEIGHT_BOLD,
-                                     "scale", PANGO_SCALE_X_LARGE,
-                                     NULL);
-  mono = gtk_text_buffer_create_tag (buffer, NULL,
-                                     "family", "monospace",
-                                     NULL);
-  nobreaks = gtk_text_buffer_create_tag (buffer, NULL,
-                                         "allow-breaks", FALSE,
-                                         NULL);
-
  gtk_text_buffer_set_text (buffer, "", 0);
  gtk_text_buffer_get_iter_at_offset (buffer, &iter, 0);
  gtk_text_buffer_begin_irreversible_action (buffer);
@@ -118,22 +104,17 @@ show_page (GtkTextView *text_view,
    }
  else if (page == 2)
    {
-      mark = gtk_text_buffer_create_mark (buffer, "mark", &iter, TRUE);
+      GtkTextTag *tag;

-      gtk_text_buffer_insert_with_tags (buffer, &iter, "tag", -1, bold, NULL);
-      gtk_text_buffer_insert (buffer, &iter, " /", -1);
-
-      gtk_text_buffer_get_iter_at_mark (buffer, &start, mark);
-      gtk_text_buffer_apply_tag (buffer, nobreaks, &start, &iter);
-      gtk_text_buffer_insert (buffer, &iter, " ", -1);
-
-      gtk_text_buffer_move_mark (buffer, mark, &iter);
-      gtk_text_buffer_insert_with_tags (buffer, &iter, "tag", -1, mono, NULL);
-      gtk_text_buffer_insert (buffer, &iter, " /", -1);
-
-      gtk_text_buffer_get_iter_at_mark (buffer, &start, mark);
-      gtk_text_buffer_apply_tag (buffer, nobreaks, &start, &iter);
-      gtk_text_buffer_insert (buffer, &iter, " ", -1);
+      tag = gtk_text_buffer_create_tag (buffer, NULL,
+                                        "weight", PANGO_WEIGHT_BOLD,
+                                        "scale", PANGO_SCALE_X_LARGE,
+                                        NULL);
+      gtk_text_buffer_insert_with_tags (buffer, &iter, "tag", -1, tag, NULL);
+      tag = gtk_text_buffer_create_tag (buffer, NULL,
+                                        "family", "monospace",
+                                        NULL);
+      gtk_text_buffer_insert_with_tags (buffer, &iter, " / tag / ", -1, tag, NULL);

      anchor = gtk_text_buffer_create_child_anchor (buffer, &iter);
      child = gtk_image_new_from_icon_name ("audio-volume-high-symbolic");
@@ -151,26 +132,20 @@ show_page (GtkTextView *text_view,
          "behavior of mouse and key presses, “lock” a range of text so the "
          "user can't edit it, or countless other things.\n", -1);
      insert_link (buffer, &iter, "Go back", 1);
-
-      gtk_text_buffer_delete_mark (buffer, mark);
    }
  else if (page == 3)
    {
-      mark = gtk_text_buffer_create_mark (buffer, "mark", &iter, TRUE);
+      GtkTextTag *tag;

-      gtk_text_buffer_insert_with_tags (buffer, &iter, "hypertext", -1, bold, NULL);
-      gtk_text_buffer_insert (buffer, &iter, " /", -1);
-
-      gtk_text_buffer_get_iter_at_mark (buffer, &start, mark);
-      gtk_text_buffer_apply_tag (buffer, nobreaks, &start, &iter);
-      gtk_text_buffer_insert (buffer, &iter, " ", -1);
-
-      gtk_text_buffer_move_mark (buffer, mark, &iter);
-      gtk_text_buffer_insert_with_tags (buffer, &iter, "ˈhaɪ pərˌtɛkst", -1, mono, NULL);
-      gtk_text_buffer_insert (buffer, &iter, " /", -1);
-      gtk_text_buffer_get_iter_at_mark (buffer, &start, mark);
-      gtk_text_buffer_apply_tag (buffer, nobreaks, &start, &iter);
-      gtk_text_buffer_insert (buffer, &iter, " ", -1);
+      tag = gtk_text_buffer_create_tag (buffer, NULL,
+                                        "weight", PANGO_WEIGHT_BOLD,
+                                        "scale", PANGO_SCALE_X_LARGE,
+                                        NULL);
+      gtk_text_buffer_insert_with_tags (buffer, &iter, "hypertext", -1, tag, NULL);
+      tag = gtk_text_buffer_create_tag (buffer, NULL,
+                                        "family", "monospace",
+                                        NULL);
+      gtk_text_buffer_insert_with_tags (buffer, &iter, " / ˈhaɪ pərˌtɛkst / ", -1, tag, NULL);

      anchor = gtk_text_buffer_create_child_anchor (buffer, &iter);
      child = gtk_image_new_from_icon_name ("audio-volume-high-symbolic");
@@ -184,8 +159,6 @@ show_page (GtkTextView *text_view,
          "Machine-readable text that is not sequential but is organized "
          "so that related items of information are connected.\n", -1);
      insert_link (buffer, &iter, "Go back", 1);
-
-      gtk_text_buffer_delete_mark (buffer, mark);
    }
  gtk_text_buffer_end_irreversible_action (buffer);
 }
@@ -385,7 +358,7 @@ do_hypertext (GtkWidget *do_widget)

      sw = gtk_scrolled_window_new ();
      gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
-                                      GTK_POLICY_NEVER,
+                                      GTK_POLICY_AUTOMATIC,
                                      GTK_POLICY_AUTOMATIC);
      gtk_window_set_child (GTK_WINDOW (window), sw);
      gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), view);
@@ -58,7 +58,7 @@ do_markup (GtkWidget *do_widget)
      window = gtk_window_new ();
      gtk_window_set_display (GTK_WINDOW (window),
                              gtk_widget_get_display (do_widget));
-      gtk_window_set_default_size (GTK_WINDOW (window), 600, 680);
+      gtk_window_set_default_size (GTK_WINDOW (window), 450, 450);
      g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);

      stack = gtk_stack_new ();
@@ -1,9 +1,5 @@

-Text sizes: <span size="xx-small">tiny </span><span size="x-small">very small </span><span size="small">small </span><span size="medium">normal </span><span size="large">large </span><span size="x-large">very large </span><span size="xx-large">huge</span>
-
-Text styles: <span style="normal">Normal</span> <span style="italic">Italic</span> <span style="oblique">Olique</span>
-
-Text weights: <span weight="thin">thin</span> <span weight="light">light</span> <span weight="normal">normal</span> <span weight="bold">bold</span> <span weight="ultraheavy">ultraheavy</span>
+Text sizes: <span size="xx-small">tiny</span> <span size="x-small">very small</span> <span size="small">small</span> <span size="medium">normal</span> <span size="large">large</span> <span size="x-large">very large</span> <span size="xx-large">huge</span>

 Text <span color="gray">c<span color="green">o</span>l<span color="tomato">o</span>rs</span> and <span background="pink">backgrounds</span>

@@ -19,12 +15,6 @@ OpenType font features: <span font_desc="sans regular" font_features="dlig=0">fe

 Shortcuts: <tt>Monospace</tt> – <b>Bold</b> – <i>Italic</i> – <big>Big</big> – <small>Small</small> – <u>Underlined</u> – <s>Strikethrough</s> – Super<sup>script</sup> – Sub<sub>script</sub>

-hyphenation algorithm is a <span allow_breaks="false" style="italic">set of rules</span>, especially one codified for implementation in a computer program, that decides at which points a word can be broken over two lines with a hyphen. For example, a hyphenation algorithm might decide that impeachment can be broken as impeach‧ment or im‧peachment but not impe‧achment.
+<span allow_breaks="false">A</span> hyphenation algorithm is a set of rules, especially one codified for implementation in a computer program, that decides at which points a word can be broken over two lines with a hyphen. For example, a hyphenation algorithm might decide that impeachment can be broken as <span allow_breaks="false">impeach‧ment</span> or <span allow_breaks="false">im‧peachment</span> but not <span allow_breaks="false">impe‧achment.</span>

 <span insert_hyphens="false">one/two three/four five/six seven/eight nine/ten</span>
-
-<span line_height='1.33'>Line height: This is an example of widely spaced text. It was achieved by setting the line-height factor to 1.33. You can set the line-height factor to any value between 0 and 10.
-Note that the line height affects the spacing between paragraphs as well as between the wrapped lines inside a paragraph.</span>
-
-Transforms: <span text_transform='uppercase'>straße</span> <span text_transform='capitalize'>up, up and away</span>
-
@@ -67,7 +67,6 @@ demos = files([
  'paintable_animated.c',
  'paintable_emblem.c',
  'paintable_mediastream.c',
-  'paintable_symbolic.c',
  'panes.c',
  'password_entry.c',
  'peg_solitaire.c',
@@ -45,27 +45,26 @@ struct _GtkNuclearIconClass
 * so that it can be called from all the other demos, too.
 */
 void
-gtk_nuclear_snapshot (GtkSnapshot   *snapshot,
-                      const GdkRGBA *foreground,
-                      const GdkRGBA *background,
-                      double         width,
-                      double         height,
-                      double         rotation)
+gtk_nuclear_snapshot (GtkSnapshot *snapshot,
+                      double       width,
+                      double       height,
+                      double       rotation,
+                      gboolean     draw_background)
 {
 #define RADIUS 0.3
  cairo_t *cr;
  double size;

-  gtk_snapshot_append_color (snapshot,
-                             background,
-                             &GRAPHENE_RECT_INIT (0, 0, width, height));
+  if (draw_background)
+    gtk_snapshot_append_color (snapshot,
+                               &(GdkRGBA) { 0.9, 0.75, 0.15, 1.0 },
+                               &GRAPHENE_RECT_INIT (0, 0, width, height));

  size = MIN (width, height);
  cr = gtk_snapshot_append_cairo (snapshot,
                                  &GRAPHENE_RECT_INIT ((width - size) / 2.0,
                                                       (height - size) / 2.0,
                                                       size, size));
-  gdk_cairo_set_source_rgba (cr, foreground);
  cairo_translate (cr, width / 2.0, height / 2.0);
  cairo_scale (cr, size, size);
  cairo_rotate (cr, rotation);
@@ -95,10 +94,9 @@ gtk_nuclear_icon_snapshot (GdkPaintable *paintable,
   */

  gtk_nuclear_snapshot (snapshot,
-                        &(GdkRGBA) { 0, 0, 0, 1 }, /* black */
-                        &(GdkRGBA) { 0.9, 0.75, 0.15, 1.0 }, /* yellow */
                        width, height,
-                        nuclear->rotation);
+                        nuclear->rotation,
+                        TRUE);
 }

 static GdkPaintableFlags
@@ -4,11 +4,10 @@
 #include <gtk/gtk.h>

 void            gtk_nuclear_snapshot           (GtkSnapshot     *snapshot,
-                                                const GdkRGBA   *foreground,
-                                                const GdkRGBA   *background,
                                                double           width,
                                                double           height,
-                                                double           rotation);
+                                                double           rotation,
+                                                gboolean         draw_background);

 GdkPaintable *  gtk_nuclear_icon_new            (double          rotation);
 GdkPaintable *  gtk_nuclear_animation_new       (gboolean        draw_background);
@@ -65,12 +65,9 @@ gtk_nuclear_animation_snapshot (GdkPaintable *paintable,

  /* We call the function from the previous example here. */
  gtk_nuclear_snapshot (snapshot,
-                        &(GdkRGBA) { 0, 0, 0, 1 }, /* black */
-                        nuclear->draw_background
-                          ? &(GdkRGBA) { 0.9, 0.75, 0.15, 1.0 } /* yellow */
-                          : &(GdkRGBA) { 0, 0, 0, 0 }, /* transparent */
                        width, height,
-                        2 * G_PI * nuclear->progress / MAX_PROGRESS);
+                        2 * G_PI * nuclear->progress / MAX_PROGRESS,
+                        nuclear->draw_background);
 }

 static GdkPaintable *
@@ -73,10 +73,9 @@ gtk_nuclear_media_stream_snapshot (GdkPaintable *paintable,

  /* We call the function from the previous example here. */
  gtk_nuclear_snapshot (snapshot,
-                        &(GdkRGBA) { 0, 0, 0, 1 }, /* black */
-                        &(GdkRGBA) { 0.9, 0.75, 0.15, 1.0 }, /* yellow */
                        width, height,
-                        2 * G_PI * nuclear->progress / DURATION);
+                        2 * G_PI * nuclear->progress / DURATION,
+                        TRUE);
 }

 static GdkPaintable *
@@ -1,208 +0,0 @@
-/* Paintable/Symbolic Paintable
- *
- * GdkPaintables can be made to follow the theme's colors. GTK calls
- * icons that do this symbolic icons, paintables that want to have
- * the same effect can implement the GtkSymbolicPaintable interface.
- *
- * We will adapt the original paintable example by adding the ability
- * to recolor the paintable based on the symbolic colors.
- */
-
-#include <gtk/gtk.h>
-
-#include "paintable.h"
-
-static GtkWidget *window = NULL;
-
-/* First, add the boilerplate for the object itself.
- * This part would normally go in the header.
- */
-#define GTK_TYPE_NUCLEAR_SYMBOLIC (gtk_nuclear_symbolic_get_type ())
-G_DECLARE_FINAL_TYPE (GtkNuclearSymbolic, gtk_nuclear_symbolic, GTK, NUCLEAR_SYMBOLIC, GObject)
-
-/* Declare a few warning levels, so we can pick colors based on them */
-typedef enum
-{
-  WARNING_NONE,
-  WARNING_ALERT,
-  WARNING_EMERGENCY
-} WarningLevel;
-
-/* Declare the struct. */
-struct _GtkNuclearSymbolic
-{
-  GObject parent_instance;
-
-  WarningLevel warning_level;
-};
-
-struct _GtkNuclearSymbolicClass
-{
-  GObjectClass parent_class;
-};
-
-/* Add a function to draw the nuclear icon in the given colors */
-static void
-gtk_nuclear_symbolic_snapshot_symbolic (GtkSymbolicPaintable *paintable,
-                                        GdkSnapshot          *snapshot,
-                                        double                width,
-                                        double                height,
-                                        const GdkRGBA        *colors,
-                                        gsize                 n_colors)
-{
-  GtkNuclearSymbolic *self = GTK_NUCLEAR_SYMBOLIC (paintable);
-  static const GdkRGBA transparent = { 0, };
-  const GdkRGBA *bg_color;
-
-  /* select the right background color from the warning level */
-  switch (self->warning_level)
-  {
-    case WARNING_NONE:
-      bg_color = &transparent;
-      break;
-    case WARNING_ALERT:
-      bg_color = &colors[GTK_SYMBOLIC_COLOR_WARNING];
-      break;
-    case WARNING_EMERGENCY:
-      bg_color = &colors[GTK_SYMBOLIC_COLOR_ERROR];
-      break;
-    default:
-      /* This should never happen, but we better do defensive coding
-       * with this critical icon */
-      g_assert_not_reached ();
-      bg_color = &transparent;
-      break;
-  }
-
-  /* Draw the icon with the selected warning color */
-  gtk_nuclear_snapshot (snapshot,
-                        &colors[GTK_SYMBOLIC_COLOR_FOREGROUND],
-                        bg_color,
-                        width, height,
-                        0);
-}
-
-static void
-gtk_nuclear_symbolic_symbolic_paintable_init (GtkSymbolicPaintableInterface *iface)
-{
-  iface->snapshot_symbolic = gtk_nuclear_symbolic_snapshot_symbolic;
-}
-
-/* We need to implement the functionality required by the GdkPaintable interface */
-static void
-gtk_nuclear_symbolic_snapshot (GdkPaintable *paintable,
-                                GdkSnapshot  *snapshot,
-                                double        width,
-                                double        height)
-{
-  /* Calling this function without passing a color is a neat trick
-   * to make GTK use default colors and otherwise forward the call
-   * to the snapshotting function above.
-   */
-  gtk_symbolic_paintable_snapshot_symbolic (GTK_SYMBOLIC_PAINTABLE (paintable),
-                                            snapshot,
-                                            width, height,
-                                            NULL, 0);
-}
-
-static GdkPaintableFlags
-gtk_nuclear_symbolic_get_flags (GdkPaintable *paintable)
-{
-  /* This image has a static size, but the contents may change:
-   * We draw different things when the warning level changes.
-   */
-  return GDK_PAINTABLE_STATIC_SIZE;
-}
-
-static void
-gtk_nuclear_symbolic_paintable_init (GdkPaintableInterface *iface)
-{
-  iface->snapshot = gtk_nuclear_symbolic_snapshot;
-  iface->get_flags = gtk_nuclear_symbolic_get_flags;
-}
-
-/* When defining the GType, we need to implement bot the GdkPaintable
- * and the GtkSymbolicPaintable interface */
-G_DEFINE_TYPE_WITH_CODE (GtkNuclearSymbolic, gtk_nuclear_symbolic, G_TYPE_OBJECT,
-                         G_IMPLEMENT_INTERFACE (GDK_TYPE_PAINTABLE,
-                                                gtk_nuclear_symbolic_paintable_init)
-                         G_IMPLEMENT_INTERFACE (GTK_TYPE_SYMBOLIC_PAINTABLE,
-                                                gtk_nuclear_symbolic_symbolic_paintable_init))
-
-static void
-gtk_nuclear_symbolic_class_init (GtkNuclearSymbolicClass *klass)
-{
-}
-
-static void
-gtk_nuclear_symbolic_init (GtkNuclearSymbolic *nuclear)
-{
-}
-
-/* And finally, we add the simple constructor we declared in the header. */
-GdkPaintable *
-gtk_nuclear_symbolic_new (void)
-{
-  return g_object_new (GTK_TYPE_NUCLEAR_SYMBOLIC, NULL);
-}
-
-/* Add some fun feature to the button */
-static void
-nuclear_button_clicked (GtkButton          *button,
-                        GtkNuclearSymbolic *nuclear)
-{
-  if (nuclear->warning_level >= WARNING_EMERGENCY)
-    {
-      /* On maximum warning level, reset the warning */
-      nuclear->warning_level = WARNING_NONE;
-      /* And sometimes (but not always to confuse people)
-       * close the window.
-       */
-      if (g_random_boolean ())
-        gtk_window_close (GTK_WINDOW (window));
-    }
-  else
-    {
-      /* Otherwise just increase the warning level */
-      nuclear->warning_level++;
-    }
-
-  /* Don't forget to emit the signal causing the paintable to redraw.
-   * Changing the warning level changes the background color after all.
-   */
-  gdk_paintable_invalidate_contents (GDK_PAINTABLE (nuclear));
-}
-
-GtkWidget *
-do_paintable_symbolic (GtkWidget *do_widget)
-{
-  GdkPaintable *nuclear;
-  GtkWidget *image, *button;
-
-  if (!window)
-    {
-      window = gtk_window_new ();
-      gtk_window_set_display (GTK_WINDOW (window),
-                              gtk_widget_get_display (do_widget));
-      gtk_window_set_title (GTK_WINDOW (window), "Don't click!");
-      gtk_window_set_default_size (GTK_WINDOW (window), 200, 200);
-      g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
-
-      button = gtk_button_new ();
-      gtk_window_set_child (GTK_WINDOW (window), button);
-
-      nuclear = gtk_nuclear_symbolic_new ();
-      image = gtk_image_new_from_paintable (nuclear);
-
-      gtk_button_set_child (GTK_BUTTON (button), image);
-      g_signal_connect (button, "clicked", G_CALLBACK (nuclear_button_clicked), nuclear);
-      g_object_unref (nuclear);
-    }
-
-  if (!gtk_widget_get_visible (window))
-    gtk_widget_show (window);
-  else
-    gtk_window_destroy (GTK_WINDOW (window));
-
-  return window;
-}
@@ -24,6 +24,7 @@
 #include "gtkrendererpaintableprivate.h"

 #include "gsk/gskrendernodeparserprivate.h"
+#include "gsk/gl/gskglrenderer.h"
 #include "gsk/ngl/gsknglrenderer.h"
 #ifdef GDK_WINDOWING_BROADWAY
 #include "gsk/broadway/gskbroadwayrenderer.h"
@@ -60,7 +61,7 @@ struct _NodeEditorWindow

  GtkWidget *renderer_listbox;
  GListStore *renderers;
-  GskRenderNode *node;
+  GdkPaintable *paintable;

  GFileMonitor *file_monitor;

@@ -167,6 +168,7 @@ static void
 text_changed (GtkTextBuffer    *buffer,
              NodeEditorWindow *self)
 {
+  GskRenderNode *node;
  char *text;
  GBytes *bytes;
  GtkTextIter iter;
@@ -177,12 +179,10 @@ text_changed (GtkTextBuffer    *buffer,
  text_buffer_remove_all_tags (self->text_buffer);
  bytes = g_bytes_new_take (text, strlen (text));

-  g_clear_pointer (&self->node, gsk_render_node_unref);
-
  /* If this is too slow, go fix the parser performance */
-  self->node = gsk_render_node_deserialize (bytes, deserialize_error_func, self);
+  node = gsk_render_node_deserialize (bytes, deserialize_error_func, self);
  g_bytes_unref (bytes);
-  if (self->node)
+  if (node)
    {
      /* XXX: Is this code necessary or can we have API to turn nodes into paintables? */
      GtkSnapshot *snapshot;
@@ -191,9 +191,10 @@ text_changed (GtkTextBuffer    *buffer,
      guint i;

      snapshot = gtk_snapshot_new ();
-      gsk_render_node_get_bounds (self->node, &bounds);
+      gsk_render_node_get_bounds (node, &bounds);
      gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (- bounds.origin.x, - bounds.origin.y));
-      gtk_snapshot_append_node (snapshot, self->node);
+      gtk_snapshot_append_node (snapshot, node);
+      gsk_render_node_unref (node);
      paintable = gtk_snapshot_free_to_paintable (snapshot, &bounds.size);
      gtk_picture_set_paintable (GTK_PICTURE (self->picture), paintable);
      for (i = 0; i < g_list_model_get_n_items (G_LIST_MODEL (self->renderers)); i++)
@@ -337,9 +338,15 @@ text_view_query_tooltip_cb (GtkWidget        *widget,
 }

 static gboolean
-load_bytes (NodeEditorWindow *self,
-            GBytes           *bytes)
+load_file_contents (NodeEditorWindow *self,
+                    GFile            *file)
 {
+  GBytes *bytes;
+
+  bytes = g_file_load_bytes (file, NULL, NULL, NULL);
+  if (bytes == NULL)
+    return FALSE;
+
  if (!g_utf8_validate (g_bytes_get_data (bytes, NULL), g_bytes_get_size (bytes), NULL))
    {
      g_bytes_unref (bytes);
@@ -355,105 +362,6 @@ load_bytes (NodeEditorWindow *self,
  return TRUE;
 }

-static gboolean
-load_file_contents (NodeEditorWindow *self,
-                    GFile            *file)
-{
-  GBytes *bytes;
-
-  bytes = g_file_load_bytes (file, NULL, NULL, NULL);
-  if (bytes == NULL)
-    return FALSE;
-
-  return load_bytes (self, bytes);
-}
-
-static GdkContentProvider *
-on_picture_drag_prepare_cb (GtkDragSource    *source,
-                            double            x,
-                            double            y,
-                            NodeEditorWindow *self)
-{
-  if (self->node == NULL)
-    return NULL;
-
-  return gdk_content_provider_new_typed (GSK_TYPE_RENDER_NODE, self->node);
-}
-
-static void
-on_picture_drop_read_done_cb (GObject      *source,
-                              GAsyncResult *res,
-                              gpointer      data)
-{
-  NodeEditorWindow *self = data;
-  GOutputStream *stream = G_OUTPUT_STREAM (source);
-  GdkDrop *drop = g_object_get_data (source, "drop");
-  GdkDragAction action = 0;
-  GBytes *bytes;
-
-  if (g_output_stream_splice_finish (stream, res, NULL) >= 0)
-    {
-      bytes = g_memory_output_stream_steal_as_bytes (G_MEMORY_OUTPUT_STREAM (stream));
-      if (load_bytes (self, bytes))
-        action = GDK_ACTION_COPY;
-    }
-
-  g_object_unref (self);
-  gdk_drop_finish (drop, action);
-  g_object_unref (drop);
-  return;
-}
-
-static void
-on_picture_drop_read_cb (GObject      *source,
-                         GAsyncResult *res,
-                         gpointer      data)
-{
-  NodeEditorWindow *self = data;
-  GdkDrop *drop = GDK_DROP (source);
-  GInputStream *input;
-  GOutputStream *output;
-
-  input = gdk_drop_read_finish (drop, res, NULL, NULL);
-  if (input == NULL)
-    {
-      g_object_unref (self);
-      gdk_drop_finish (drop, 0);
-      return;
-    }
-
-  output = g_memory_output_stream_new_resizable ();
-  g_object_set_data (G_OBJECT (output), "drop", drop);
-  g_object_ref (drop);
-
-  g_output_stream_splice_async (output,
-                                input,
-                                G_OUTPUT_STREAM_SPLICE_CLOSE_SOURCE | G_OUTPUT_STREAM_SPLICE_CLOSE_TARGET,
-                                G_PRIORITY_DEFAULT,
-                                NULL,
-                                on_picture_drop_read_done_cb,
-                                self);
-  g_object_unref (output);
-  g_object_unref (input);
-}
-
-static gboolean
-on_picture_drop_cb (GtkDropTargetAsync *dest,
-                    GdkDrop            *drop,
-                    double              x,
-                    double              y,
-                    NodeEditorWindow   *self)
-{
-  gdk_drop_read_async (drop,
-                       (const char *[2]) { "application/x-gtk-render-node", NULL },
-                       G_PRIORITY_DEFAULT,
-                       NULL,
-                       on_picture_drop_read_cb,
-                       g_object_ref (self));
-
-  return TRUE;
-}
-
 static void
 file_changed_cb (GFileMonitor      *monitor,
                 GFile             *file,
@@ -828,7 +736,6 @@ node_editor_window_finalize (GObject *object)

  g_array_free (self->errors, TRUE);

-  g_clear_pointer (&self->node, gsk_render_node_unref);
  g_clear_object (&self->renderers);

  G_OBJECT_CLASS (node_editor_window_parent_class)->finalize (object);
@@ -872,8 +779,11 @@ node_editor_window_realize (GtkWidget *widget)
                                   "Default");
 #endif
  node_editor_window_add_renderer (self,
-                                   gsk_ngl_renderer_new (),
+                                   gsk_gl_renderer_new (),
                                   "OpenGL");
+  node_editor_window_add_renderer (self,
+                                   gsk_ngl_renderer_new (),
+                                   "NGL");
 #ifdef GDK_RENDERING_VULKAN
  node_editor_window_add_renderer (self,
                                   gsk_vulkan_renderer_new (),
@@ -938,8 +848,6 @@ node_editor_window_class_init (NodeEditorWindowClass *class)
  gtk_widget_class_bind_template_callback (widget_class, testcase_save_clicked_cb);
  gtk_widget_class_bind_template_callback (widget_class, testcase_name_entry_changed_cb);
  gtk_widget_class_bind_template_callback (widget_class, dark_mode_cb);
-  gtk_widget_class_bind_template_callback (widget_class, on_picture_drag_prepare_cb);
-  gtk_widget_class_bind_template_callback (widget_class, on_picture_drop_cb);
 }

 static GtkWidget *
@@ -200,19 +200,6 @@
                        <property name="can-shrink">0</property>
                        <property name="halign">center</property>
                        <property name="valign">center</property>
-                        <child>
-                          <object class="GtkDragSource">
-                            <property name="actions">copy</property>
-                            <signal name="prepare" handler="on_picture_drag_prepare_cb" swapped="no"/>
-                          </object>
-                        </child>
-                      </object>
-                    </child>
-                    <child>
-                      <object class="GtkDropTargetAsync">
-                        <property name="actions">copy</property>
-                        <property name="formats">application/x-gtk-render-node</property>
-                        <signal name="drop" handler="on_picture_drop_cb" swapped="no"/>
                      </object>
                    </child>
                  </object>
@@ -162,8 +162,6 @@ done with
 |caret-color|[CSS Basic User Interface Level 3](https://www.w3.org/TR/css3-ui/#caret-color) | CSS allows an auto value |
 |-gtk-secondary-caret-color|[Color](https://www.w3.org/TR/css-color-3/#valuea-def-color) | used for the secondary caret in bidirectional text |
 |letter-spacing| [CSS Text Level 3](https://www.w3.org/TR/css3-text/#letter-spacing) | |
-|text-transform| [CSS Text Level 3](https://www.w3.org/TR/css-text-3/#text-transform-property) | CSS allows full-width and full-size-kana. Since 4.6 |
-|line-height| [CSS Inline Layout Level 3](https://www.w3.org/TR/css-inline-3/#line-height-property) | Since 4.6 |
 |text-decoration-line| [CSS Text Decoration Level 3](https://www.w3.org/TR/css-text-decor-3/#text-decoration-line-property) | |
 |text-decoration-color| [CSS Text Decoration Level 3](https://www.w3.org/TR/css-text-decor-3/#text-decoration-color-property) | |
 |text-decoration-style| [CSS Text Decoration Level 3](https://www.w3.org/TR/css-text-decor-3/#text-decoration-style-property) | CSS allows dashed and dotted |
@@ -137,14 +137,6 @@ capture phase, and key bindings locally, during the target phase.
 Under the hood, all shortcuts are represented as instances of `GtkShortcut`,
 and they are managed by `GtkShortcutController`.

-## Text input
-
-When actual text input is needed (i.e. not just keyboard shortcuts),
-input method support can be added to a widget by connecting an input
-method context and listening to its `::commit` signal. To create a new
-input method context, use gtk_im_multicontext_new(), to provide it with
-input, use gtk_event_controller_key_set_im_context().
-
 ## Event controllers and gestures

 Event controllers are standalone objects that can perform
@@ -14,19 +14,14 @@ instructions, binary downloads, etc, can be found
 The Win32 GDK backend can be influenced with some additional environment
 variables.

-### GDK_WIN32_TABLET_INPUT_API
+### GDK_IGNORE_WINTAB

-If this variable is set, it determines the API that GTK uses for tablet support.
-The possible values are:
+If this variable is set, GTK doesn't use the Wintab API for tablet support.

-`none`
-: Disables tablet support
+### GDK_USE_WINTAB

-`wintab`
-: Use the Wintab API
-
-`winpointer`
-: Use the Windows Pointer Input Stack API. This is the default.
+If this variable is set, GTK uses the Wintab API for tablet support.
+This is the default.

 ## Windows-specific handling of cursors

@@ -5,10 +5,6 @@ gidocgen = find_program('gi-docgen', required: get_option('gtk_doc'))

 docs_dir = gtk_datadir / 'doc'

-if get_option('gtk_doc') and not build_gir
-  error('API reference requires introspection.')
-endif
-
 subdir('gdk')
 subdir('gsk')
 subdir('gtk')
@@ -7,6 +7,10 @@
 struct _ExampleAppPrefs
 {
  GtkDialog parent;
+
+  GSettings *settings;
+  GtkWidget *font;
+  GtkWidget *transition;
 };

 G_DEFINE_TYPE (ExampleAppPrefs, example_app_prefs, GTK_TYPE_DIALOG)
@@ -15,20 +19,41 @@ static void
 example_app_prefs_init (ExampleAppPrefs *prefs)
 {
  gtk_widget_init_template (GTK_WIDGET (prefs));
+  prefs->settings = g_settings_new ("org.gtk.exampleapp");
+
+  g_settings_bind (prefs->settings, "font",
+                   prefs->font, "font",
+                   G_SETTINGS_BIND_DEFAULT);
+  g_settings_bind (prefs->settings, "transition",
+                   prefs->transition, "active-id",
+                   G_SETTINGS_BIND_DEFAULT);
+}
+
+static void
+example_app_prefs_dispose (GObject *object)
+{
+  ExampleAppPrefs *prefs;
+
+  prefs = EXAMPLE_APP_PREFS (object);
+
+  g_clear_object (&prefs->settings);
+
+  G_OBJECT_CLASS (example_app_prefs_parent_class)->dispose (object);
 }

 static void
 example_app_prefs_class_init (ExampleAppPrefsClass *class)
 {
+  G_OBJECT_CLASS (class)->dispose = example_app_prefs_dispose;
+
  gtk_widget_class_set_template_from_resource (GTK_WIDGET_CLASS (class),
                                               "/org/gtk/exampleapp/prefs.ui");
+  gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), ExampleAppPrefs, font);
+  gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), ExampleAppPrefs, transition);
 }

 ExampleAppPrefs *
 example_app_prefs_new (ExampleAppWindow *win)
 {
-  return g_object_new (EXAMPLE_APP_PREFS_TYPE,
-                       "transient-for", win,
-                       "use-header-bar", TRUE,
-                       NULL);
+  return g_object_new (EXAMPLE_APP_PREFS_TYPE, "transient-for", win, "use-header-bar", TRUE, NULL);
 }
@@ -28,7 +28,6 @@
            </child>
            <child>
              <object class="GtkFontButton" id="font">
-              <property name="font" bind-settings-schema="org.gtk.exampleapp" bind-settings-key="font"/>
                <layout>
                  <property name="column">1</property>
                  <property name="row">0</property>
@@ -49,7 +48,6 @@
            </child>
            <child>
              <object class="GtkComboBoxText" id="transition">
-                <property name="active-id" bind-settings-schema="org.gtk.exampleapp" bind-settings-key="transition"/>
                <items>
                  <item translatable="yes" id="none">None</item>
                  <item translatable="yes" id="crossfade">Fade</item>
@@ -132,7 +132,7 @@ static const GdkDebugKey gdk_debug_keys[] = {
  { "gl-wgl",          GDK_DEBUG_GL_WGL, "Use WGL on Windows" },
  { "vulkan-disable",  GDK_DEBUG_VULKAN_DISABLE, "Disable Vulkan support" },
  { "vulkan-validate", GDK_DEBUG_VULKAN_VALIDATE, "Load the Vulkan validation layer" },
-  { "default-settings",GDK_DEBUG_DEFAULT_SETTINGS, "Force default values for xsettings", TRUE },
+  { "default-settings",GDK_DEBUG_DEFAULT_SETTINGS, "Force default values for xsettings" },
 };


@@ -635,7 +635,7 @@ gdk_clipboard_read_internal (GdkClipboard        *clipboard,
 /**
 * gdk_clipboard_read_async:
 * @clipboard: a `GdkClipboard`
- * @mime_types: (array zero-terminated=1): a %NULL-terminated array of mime types to choose from
+ * @mime_types: a %NULL-terminated array of mime types to choose from
 * @io_priority: the I/O priority of the request
 * @cancellable: (nullable): optional `GCancellable` object
 * @callback: (scope async): callback to call when the request is satisfied
@@ -1253,15 +1253,9 @@ gdk_clipboard_set_content (GdkClipboard       *clipboard,
 * @...: value contents conforming to @type
 *
 * Sets the clipboard to contain the value collected from the given varargs.
- * 
- * Values should be passed the same way they are passed to other value
- * collecting APIs, such as [`method@GObject.Object.set`] or
- * [`id@g_signal_emit`].
 *
 * ```c
- * gdk_clipboard_set (clipboard, GTK_TYPE_STRING, "Hello World");
- * 
- * gdk_clipboard_set (clipboard, GDK_TYPE_TEXTURE, some_texture);
+ * gdk_clipboard_set (clipboard, GTK_TYPE_TEXT_BUFFER, buffer);
 * ```
 */
 void
@@ -553,8 +553,6 @@ gdk_content_deserialize_async (GInputStream        *stream,
  Deserializer *deserializer;

  g_return_if_fail (G_IS_INPUT_STREAM (stream));
-  g_return_if_fail (mime_type != NULL);
-  g_return_if_fail (G_TYPE_IS_VALUE_TYPE (type));
  g_return_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable));
  g_return_if_fail (callback != NULL);

@@ -593,10 +591,7 @@ gdk_content_deserialize_finish (GAsyncResult  *result,
  g_return_val_if_fail (GDK_IS_CONTENT_DESERIALIZER (result), FALSE);
  g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
  deserializer = GDK_CONTENT_DESERIALIZER (result);
-  if (G_VALUE_TYPE (value) == 0)
-    g_value_init (value, G_VALUE_TYPE (&deserializer->value));
-  else
-    g_return_val_if_fail (G_VALUE_HOLDS (value, G_VALUE_TYPE (&deserializer->value)), FALSE);
+  g_return_val_if_fail (G_VALUE_HOLDS (value, G_VALUE_TYPE (&deserializer->value)), FALSE);

  if (deserializer->error)
    {
@@ -80,7 +80,7 @@ gdk_content_provider_value_get_value (GdkContentProvider  *provider,
 {
  GdkContentProviderValue *content = GDK_CONTENT_PROVIDER_VALUE (provider);

-  if (G_VALUE_HOLDS (&content->value, G_VALUE_TYPE (value)))
+  if (G_VALUE_HOLDS (value, G_VALUE_TYPE (&content->value)))
    {
      g_value_copy (&content->value, value);
      return TRUE;
@@ -70,17 +70,17 @@ typedef enum {
 *   snapshot at or 0 if none. This is purely a hint. The object must still
 *   be able to render at any size.
 * @get_intrinsic_aspect_ratio: The preferred aspect ratio for this object
- *   or 0 if none. If both [vfunc@Gdk.Paintable.get_intrinsic_width]
- *   and [vfunc@Gdk.Paintable.get_intrinsic_height] return non-zero
+ *   or 0 if none. If both [vfunc@Gdk.PaintableInterface.get_intrinsic_width]
+ *   and [vfunc@Gdk.PaintableInterface.get_intrinsic_height] return non-zero
 *   values, this function should return the aspect ratio computed from those.
 *
 * The list of functions that can be implemented for the `GdkPaintable`
 * interface.
 *
- * Note that apart from the [vfunc@Gdk.Paintable.snapshot] function,
+ * Note that apart from the [vfunc@Gdk.PaintableInterface.snapshot] function,
 * no virtual function of this interface is mandatory to implement, though it
- * is a good idea to implement [vfunc@Gdk.Paintable.get_current_image]
- * for non-static paintables and [vfunc@Gdk.Paintable.get_flags] if the
+ * is a good idea to implement [vfunc@Gdk.PaintableInterface.get_current_image]
+ * for non-static paintables and [vfunc@Gdk.PaintableInterface.get_flags] if the
 * image is not dynamic as the default implementation returns no flags and
 * that will make the implementation likely quite slow.
 */
@@ -94,14 +94,6 @@
 */
 #define GDK_VERSION_4_4        (G_ENCODE_VERSION (4, 4))

-/**
- * GDK_VERSION_4_6:
- *
- * A macro that evaluates to the 4.6 version of GDK, in a format
- * that can be used by the C pre-processor.
- */
-#define GDK_VERSION_4_6        (G_ENCODE_VERSION (4, 6))
-

 /* evaluates to the current stable version; for development cycles,
 * this means the next stable target, with a hard backstop to the
@@ -229,18 +221,4 @@
 # define GDK_DEPRECATED_IN_4_4_FOR(f)           _GDK_EXTERN
 #endif

-#if GDK_VERSION_MAX_ALLOWED < GDK_VERSION_4_6
-# define GDK_AVAILABLE_IN_4_6                   GDK_UNAVAILABLE(4, 6)
-#else
-# define GDK_AVAILABLE_IN_4_6                   _GDK_EXTERN
-#endif
-
-#if GDK_VERSION_MIN_REQUIRED >= GDK_VERSION_4_6
-# define GDK_DEPRECATED_IN_4_6                  GDK_DEPRECATED
-# define GDK_DEPRECATED_IN_4_6_FOR(f)           GDK_DEPRECATED_FOR(f)
-#else
-# define GDK_DEPRECATED_IN_4_6                  _GDK_EXTERN
-# define GDK_DEPRECATED_IN_4_6_FOR(f)           _GDK_EXTERN
-#endif
-
 #endif  /* __GDK_VERSION_MACROS_H__ */
@@ -117,104 +117,104 @@ gdk_vulkan_strerror (VkResult result)
  switch (result)
  {
    case VK_SUCCESS:
-      return "Command successfully completed. (VK_SUCCESS)";
+      return "Command successfully completed.";
    case VK_NOT_READY:
-      return "A fence or query has not yet completed. (VK_NOT_READY)";
+      return "A fence or query has not yet completed.";
    case VK_TIMEOUT:
-      return "A wait operation has not completed in the specified time. (VK_TIMEOUT)";
+      return "A wait operation has not completed in the specified time.";
    case VK_EVENT_SET:
-      return "An event is signaled. (VK_EVENT_SET)";
+      return "An event is signaled.";
    case VK_EVENT_RESET:
-      return "An event is unsignaled. (VK_EVENT_RESET)";
+      return "An event is unsignaled.";
    case VK_INCOMPLETE:
-      return "A return array was too small for the result. (VK_INCOMPLETE)";
+      return "A return array was too small for the result.";
    case VK_SUBOPTIMAL_KHR:
-      return "A swapchain no longer matches the surface properties exactly, but can still be used to present to the surface successfully. (VK_SUBOPTIMAL_KHR)";
+      return "A swapchain no longer matches the surface properties exactly, but can still be used to present to the surface successfully.";
    case VK_ERROR_OUT_OF_HOST_MEMORY:
-      return "A host memory allocation has failed. (VK_ERROR_OUT_OF_HOST_MEMORY)";
+      return "A host memory allocation has failed.";
    case VK_ERROR_OUT_OF_DEVICE_MEMORY:
-      return "A device memory allocation has failed. (VK_ERROR_OUT_OF_DEVICE_MEMORY)";
+      return "A device memory allocation has failed.";
    case VK_ERROR_INITIALIZATION_FAILED:
-      return "Initialization of an object could not be completed for implementation-specific reasons. (VK_ERROR_INITIALIZATION_FAILED)";
+      return "Initialization of an object could not be completed for implementation-specific reasons.";
    case VK_ERROR_DEVICE_LOST:
-      return "The logical or physical device has been lost. (VK_ERROR_DEVICE_LOST)";
+      return "The logical or physical device has been lost.";
    case VK_ERROR_MEMORY_MAP_FAILED:
-      return "Mapping of a memory object has failed. (VK_ERROR_MEMORY_MAP_FAILED)";
+      return "Mapping of a memory object has failed.";
    case VK_ERROR_LAYER_NOT_PRESENT:
-      return "A requested layer is not present or could not be loaded. (VK_ERROR_LAYER_NOT_PRESENT)";
+      return "A requested layer is not present or could not be loaded.";
    case VK_ERROR_EXTENSION_NOT_PRESENT:
-      return "A requested extension is not supported. (VK_ERROR_EXTENSION_NOT_PRESENT)";
+      return "A requested extension is not supported.";
    case VK_ERROR_FEATURE_NOT_PRESENT:
-      return "A requested feature is not supported. (VK_ERROR_FEATURE_NOT_PRESENT)";
+      return "A requested feature is not supported.";
    case VK_ERROR_INCOMPATIBLE_DRIVER:
-      return "The requested version of Vulkan is not supported by the driver or is otherwise incompatible for implementation-specific reasons. (VK_ERROR_INCOMPATIBLE_DRIVER)";
+      return "The requested version of Vulkan is not supported by the driver or is otherwise incompatible for implementation-specific reasons.";
    case VK_ERROR_TOO_MANY_OBJECTS:
-      return "Too many objects of the type have already been created. (VK_ERROR_TOO_MANY_OBJECTS)";
+      return "Too many objects of the type have already been created.";
    case VK_ERROR_FORMAT_NOT_SUPPORTED:
-      return "A requested format is not supported on this device. (VK_ERROR_FORMAT_NOT_SUPPORTED)";
+      return "A requested format is not supported on this device.";
 #if VK_HEADER_VERSION >= 24
    case VK_ERROR_FRAGMENTED_POOL:
-      return "A requested pool allocation has failed due to fragmentation of the pool’s memory. (VK_ERROR_FRAGMENTED_POOL)";
+      return "A requested pool allocation has failed due to fragmentation of the pool’s memory.";
 #endif
    case VK_ERROR_SURFACE_LOST_KHR:
-      return "A surface is no longer available. (VK_ERROR_SURFACE_LOST_KHR)";
+      return "A surface is no longer available.";
    case VK_ERROR_NATIVE_WINDOW_IN_USE_KHR:
-      return "The requested window is already in use by Vulkan or another API in a manner which prevents it from being used again. (VK_ERROR_NATIVE_WINDOW_IN_USE_KHR)";
+      return "The requested window is already in use by Vulkan or another API in a manner which prevents it from being used again.";
    case VK_ERROR_OUT_OF_DATE_KHR:
-      return "A surface has changed in such a way that it is no longer compatible with the swapchain. (VK_ERROR_OUT_OF_DATE_KHR)";
+      return "A surface has changed in such a way that it is no longer compatible with the swapchain.";
    case VK_ERROR_INCOMPATIBLE_DISPLAY_KHR:
-      return "The display used by a swapchain does not use the same presentable image layout, or is incompatible in a way that prevents sharing an image. (VK_ERROR_INCOMPATIBLE_DISPLAY_KHR)";
+      return "The display used by a swapchain does not use the same presentable image layout, or is incompatible in a way that prevents sharing an image.";
    case VK_ERROR_VALIDATION_FAILED_EXT:
-      return "The application caused the validation layer to fail. (VK_ERROR_VALIDATION_FAILED_EXT)";
+      return "The application caused the validation layer to fail.";
    case VK_ERROR_INVALID_SHADER_NV:
-      return "One or more shaders failed to compile or link. (VK_ERROR_INVALID_SHADER_NV)";
+      return "One or more shaders failed to compile or link.";
 #if VK_HEADER_VERSION >= 39
    case VK_ERROR_OUT_OF_POOL_MEMORY_KHR:
-      return "A pool memory allocation has failed. (VK_ERROR_OUT_OF_POOL_MEMORY_KHR)";
+      return "A pool memory allocation has failed.";
 #endif
 #if VK_HEADER_VERSION >= 54
    case VK_ERROR_INVALID_EXTERNAL_HANDLE_KHR:
-      return "An external handle is not a valid handle of the specified type. (VK_ERROR_INVALID_EXTERNAL_HANDLE_KHR)";
+      return "An external handle is not a valid handle of the specified type.";
 #endif
 #if VK_HEADER_VERSION >= 64
    case VK_ERROR_NOT_PERMITTED_EXT:
-      return "The caller does not have sufficient privileges. (VK_ERROR_NOT_PERMITTED_EXT)";
+      return "The caller does not have sufficient privileges.";
 #endif
 #if VK_HEADER_VERSION >= 72
    case VK_ERROR_FRAGMENTATION_EXT:
-      return "A descriptor pool creation has failed due to fragmentation. (VK_ERROR_FRAGMENTATION_EXT)";
+      return "A descriptor pool creation has failed due to fragmentation";
 #endif
 #if VK_HEADER_VERSION >= 89
    case VK_ERROR_INVALID_DRM_FORMAT_MODIFIER_PLANE_LAYOUT_EXT:
-      return "Invalid DRM format modifier plane layout (VK_ERROR_INVALID_DRM_FORMAT_MODIFIER_PLANE_LAYOUT_EXT)";
+      return "Invalid DRM format modifier plane layout";
 #endif
 #if VK_HEADER_VERSION >= 97
    case VK_ERROR_INVALID_DEVICE_ADDRESS_EXT:
-      return "Invalid device address (VK_ERROR_INVALID_DEVICE_ADDRESS_EXT)";
+      return "Invalid device address";
 #endif
 #if VK_HEADER_VERSION >= 105
    case VK_ERROR_FULL_SCREEN_EXCLUSIVE_MODE_LOST_EXT:
-      return "An operation on a swapchain created with VK_FULL_SCREEN_EXCLUSIVE_APPLICATION_CONTROLLED_EXT failed as it did not have exclusive full-screen access. (VK_ERROR_FULL_SCREEN_EXCLUSIVE_MODE_LOST_EXT)";
+      return "An operation on a swapchain created with VK_FULL_SCREEN_EXCLUSIVE_APPLICATION_CONTROLLED_EXT failed as it did not have exclusive full-screen access.";
 #endif
 #if VK_HEADER_VERSION >= 131
    case VK_ERROR_UNKNOWN:
-      return "An unknown error has occurred; either the application has provided invalid input, or an implementation failure has occurred. (VK_ERROR_UNKNOWN)";
+      return "An unknown error has occurred; either the application has provided invalid input, or an implementation failure has occurred.";
 #endif
 #if VK_HEADER_VERSION >= 135
 #if VK_HEADER_VERSION < 162
    case VK_ERROR_INCOMPATIBLE_VERSION_KHR:
-      return "This error was removed by the Vulkan gods. (VK_ERROR_INCOMPATIBLE_VERSION_KHR)";
+      return "This error was removed by the Vulkan gods.";
 #endif
    case VK_THREAD_IDLE_KHR:
-      return "A deferred operation is not complete but there is currently no work for this thread to do at the time of this call. (VK_THREAD_IDLE_KHR)";
+      return "A deferred operation is not complete but there is currently no work for this thread to do at the time of this call.";
    case VK_THREAD_DONE_KHR:
-      return "A deferred operation is not complete but there is no work remaining to assign to additional threads. (VK_THREAD_DONE_KHR)";
+      return "A deferred operation is not complete but there is no work remaining to assign to additional threads.";
    case VK_OPERATION_DEFERRED_KHR:
-      return "A deferred operation was requested and at least some of the work was deferred. (VK_OPERATION_DEFERRED_KHR)";
+      return "A deferred operation was requested and at least some of the work was deferred.";
    case VK_OPERATION_NOT_DEFERRED_KHR:
-      return "A deferred operation was requested and no operations were deferred. (VK_OPERATION_NOT_DEFERRED_KHR)";
+      return "A deferred operation was requested and no operations were deferred.";
    case VK_ERROR_PIPELINE_COMPILE_REQUIRED_EXT:
-      return "A requested pipeline creation would have required compilation, but the application requested compilation to not be performed. (VK_ERROR_PIPELINE_COMPILE_REQUIRED_EXT)";
+      return "A requested pipeline creation would have required compilation, but the application requested compilation to not be performed.";
 #endif
 #if VK_HEADER_VERSION < 140
    case VK_RESULT_RANGE_SIZE:
@@ -32,8 +32,6 @@
 #include "gdkmacoseventsource-private.h"
 #include "gdkmacosdisplay-private.h"

-#include "gdk-private.h"
-
 /*
 * This file implementations integration between the GLib main loop and
 * the native system of the Core Foundation run loop and Cocoa event
@@ -2634,23 +2634,6 @@ touch_handle_cancel (void            *data,
  GDK_SEAT_NOTE (seat, EVENTS, g_message ("touch cancel"));
 }

-static void
-touch_handle_shape (void            *data,
-                    struct wl_touch *touch,
-                    int32_t         id,
-                    wl_fixed_t      major,
-                    wl_fixed_t      minor)
-{
-}
-
-static void
-touch_handle_orientation (void            *data,
-                          struct wl_touch *touch,
-                          int32_t         id,
-                          wl_fixed_t      orientation)
-{
-}
-
 static void
 emit_gesture_swipe_event (GdkWaylandSeat          *seat,
                          GdkTouchpadGesturePhase  phase,
@@ -3038,9 +3021,7 @@ static const struct wl_touch_listener touch_listener = {
  touch_handle_up,
  touch_handle_motion,
  touch_handle_frame,
-  touch_handle_cancel,
-  touch_handle_shape,
-  touch_handle_orientation,
+  touch_handle_cancel
 };

 static const struct zwp_pointer_gesture_swipe_v1_listener gesture_swipe_listener = {
@@ -240,7 +240,7 @@ _gdk_wayland_display_add_seat (GdkWaylandDisplay *display_wayland,
 {
  struct wl_seat *seat;

-  display_wayland->seat_version = MIN (version, 7);
+  display_wayland->seat_version = MIN (version, 5);
  seat = wl_registry_bind (display_wayland->wl_registry,
                           id, &wl_seat_interface,
                           display_wayland->seat_version);
@@ -2117,7 +2117,7 @@ gdk_wayland_display_get_setting (GdkDisplay *display,
 {
  TranslationEntry *entry;

-  if (gdk_display_get_debug_flags (display) & GDK_DEBUG_DEFAULT_SETTINGS)
+  if (GDK_DISPLAY_DEBUG_CHECK (display, DEFAULT_SETTINGS))
      return FALSE;

  if (GDK_WAYLAND_DISPLAY (display)->settings != NULL &&
@@ -32,7 +32,6 @@
 #include "gdkprivate-wayland.h"

 #include "gdkinternals.h"
-#include "gdk-private.h"
 #include "gdksurfaceprivate.h"
 #include "gdkprofilerprivate.h"

@@ -475,28 +474,14 @@ gdk_wayland_display_init_gl (GdkDisplay  *display,
  G_GNUC_UNUSED gint64 start_time = GDK_PROFILER_CURRENT_TIME;
  G_GNUC_UNUSED gint64 start_time2;

-  if (!epoxy_has_egl ())
-    {
-      gboolean sandboxed = gdk_running_in_sandbox ();
-
-      g_set_error_literal (error, GDK_GL_ERROR,
-                           GDK_GL_ERROR_NOT_AVAILABLE,
-                           sandboxed ? _("libEGL not available in this sandbox")
-                                     : _("libEGL not available"));
-      return NULL;
-    }
-
  start_time2 = GDK_PROFILER_CURRENT_TIME;
  dpy = get_egl_display (display_wayland);
  gdk_profiler_end_mark (start_time, "get_egl_display", NULL);
  if (dpy == NULL)
    {
-      gboolean sandboxed = gdk_running_in_sandbox ();
-
      g_set_error_literal (error, GDK_GL_ERROR,
                           GDK_GL_ERROR_NOT_AVAILABLE,
-                           sandboxed ? _("Sandbox does not provide an OpenGL implementation")
-                                     : _("No OpenGL implementation available"));
+                           _("Failed to create EGL display"));
      return NULL;
    }

@@ -542,7 +542,7 @@ _gdk_wayland_keymap_update_from_fd (GdkKeymap *keymap,

  context = xkb_context_new (0);

-  map_str = mmap (NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
+  map_str = mmap (NULL, size, PROT_READ, MAP_SHARED, fd, 0);
  if (map_str == MAP_FAILED)
    {
      close(fd);
@@ -89,7 +89,7 @@ gdk_device_win32_query_state (GdkDevice        *device,
      hwnd = NULL;
    }

-  _gdk_win32_get_cursor_pos (&point);
+  GetCursorPos (&point);

  if (hwnd)
    ScreenToClient (hwnd, &point);
@@ -177,7 +177,7 @@ _gdk_device_win32_surface_at_position (GdkDevice       *device,
  HWND hwnd;
  RECT rect;

-  if (!_gdk_win32_get_cursor_pos (&screen_pt))
+  if (!GetCursorPos (&screen_pt))
    return NULL;

  /* Use WindowFromPoint instead of ChildWindowFromPoint(Ex).
@@ -1,224 +0,0 @@
-/* GDK - The GIMP Drawing Kit
- * Copyright (C) 2020 the GTK team
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "config.h"
-
-#include <gdk/gdksurface.h>
-
-#include <windows.h>
-
-#include "gdkwin32.h"
-#include "gdkdevice-winpointer.h"
-#include "gdkdisplay-win32.h"
-
-G_DEFINE_TYPE (GdkDeviceWinpointer, gdk_device_winpointer, GDK_TYPE_DEVICE)
-
-static GdkModifierType
-get_keyboard_mask (void)
-{
-  GdkModifierType mask = 0;
-  BYTE kbd[256];
-
-  GetKeyboardState (kbd);
-  if (kbd[VK_SHIFT] & 0x80)
-    mask |= GDK_SHIFT_MASK;
-  if (kbd[VK_CAPITAL] & 0x80)
-    mask |= GDK_LOCK_MASK;
-  if (kbd[VK_CONTROL] & 0x80)
-    mask |= GDK_CONTROL_MASK;
-  if (kbd[VK_MENU] & 0x80)
-    mask |= GDK_ALT_MASK;
-
-  return mask;
-}
-
-static void
-gdk_device_winpointer_set_surface_cursor (GdkDevice *device,
-                                          GdkSurface *window,
-                                          GdkCursor *cursor)
-{
-}
-
-void
-gdk_device_winpointer_query_state (GdkDevice        *device,
-                                   GdkSurface       *window,
-                                   GdkSurface      **child_window,
-                                   double           *win_x,
-                                   double           *win_y,
-                                   GdkModifierType  *mask)
-{
-  GdkDeviceWinpointer *device_winpointer;
-  POINT point;
-  HWND hwnd, hwndc;
-  int scale;
-
-  device_winpointer = GDK_DEVICE_WINPOINTER (device);
-  if (window)
-    {
-      scale = GDK_WIN32_SURFACE (window)->surface_scale;
-      hwnd = GDK_SURFACE_HWND (window);
-    }
-  else
-    {
-      GdkDisplay *display = gdk_device_get_display (device);
-
-      scale = GDK_WIN32_DISPLAY (display)->surface_scale;
-      hwnd = NULL;
-    }
-
-  _gdk_win32_get_cursor_pos (&point);
-
-  if (hwnd)
-    ScreenToClient (hwnd, &point);
-
-  if (win_x)
-    *win_x = point.x / scale;
-
-  if (win_y)
-    *win_y = point.y / scale;
-
-  if (!window)
-    {
-      if (win_x)
-        *win_x += _gdk_offset_x;
-
-      if (win_y)
-        *win_y += _gdk_offset_y;
-    }
-
-  if (hwnd && child_window)
-    {
-      hwndc = ChildWindowFromPoint (hwnd, point);
-
-      if (hwndc && hwndc != hwnd)
-        *child_window = gdk_win32_handle_table_lookup (hwndc);
-      else
-        *child_window = NULL; /* Direct child unknown to gdk */
-    }
-
-  if (mask)
-    {
-      *mask = get_keyboard_mask ();
-      *mask |= device_winpointer->last_button_mask;
-    }
-}
-
-static GdkGrabStatus
-gdk_device_winpointer_grab (GdkDevice    *device,
-                            GdkSurface    *window,
-                            gboolean      owner_events,
-                            GdkEventMask  event_mask,
-                            GdkSurface    *confine_to,
-                            GdkCursor    *cursor,
-                            guint32       time_)
-{
-  return GDK_GRAB_SUCCESS;
-}
-
-static void
-gdk_device_winpointer_ungrab (GdkDevice *device,
-                              guint32    time_)
-{
-}
-
-static void
-screen_to_client (HWND hwnd, POINT screen_pt, POINT *client_pt)
-{
-  *client_pt = screen_pt;
-  ScreenToClient (hwnd, client_pt);
-}
-
-static GdkSurface *
-gdk_device_winpointer_surface_at_position (GdkDevice       *device,
-                                           double          *win_x,
-                                           double          *win_y,
-                                           GdkModifierType *mask)
-{
-  GdkSurface *surface = NULL;
-  GdkWin32Surface *impl = NULL;
-  POINT screen_pt, client_pt;
-  HWND hwnd;
-  RECT rect;
-
-  if (!_gdk_win32_get_cursor_pos (&screen_pt))
-    return NULL;
-
-  /* Use WindowFromPoint instead of ChildWindowFromPoint(Ex).
-  *  Only WindowFromPoint is able to look through transparent
-  *  layered windows.
-  */
-  hwnd = GetAncestor (WindowFromPoint (screen_pt), GA_ROOT);
-
-  /* Verify that we're really inside the client area of the surface */
-  GetClientRect (hwnd, &rect);
-  screen_to_client (hwnd, screen_pt, &client_pt);
-  if (!PtInRect (&rect, client_pt))
-    hwnd = NULL;
-
-  surface = gdk_win32_handle_table_lookup (hwnd);
-
-  if (surface && (win_x || win_y))
-    {
-      impl = GDK_WIN32_SURFACE (surface);
-
-      if (win_x)
-        *win_x = client_pt.x / impl->surface_scale;
-      if (win_y)
-        *win_y = client_pt.y / impl->surface_scale;
-    }
-
-  return surface;
-}
-
-static void
-gdk_device_winpointer_init (GdkDeviceWinpointer *device_winpointer)
-{
-  device_winpointer->device_handle = NULL;
-  device_winpointer->start_cursor_id = 0;
-  device_winpointer->end_cursor_id = 0;
-
-  device_winpointer->origin_x = 0;
-  device_winpointer->origin_y = 0;
-  device_winpointer->scale_x = 0.0;
-  device_winpointer->scale_y = 0.0;
-
-  device_winpointer->last_button_mask = 0;
-}
-
-static void
-gdk_device_winpointer_finalize (GObject *object)
-{
-  GdkDeviceWinpointer *device_winpointer = GDK_DEVICE_WINPOINTER (object);
-
-  g_clear_object (&device_winpointer->tool_pen);
-  g_clear_object (&device_winpointer->tool_eraser);
-
-  G_OBJECT_CLASS (gdk_device_winpointer_parent_class)->finalize (object);
-}
-
-static void
-gdk_device_winpointer_class_init (GdkDeviceWinpointerClass *klass)
-{
-  GdkDeviceClass *device_class = GDK_DEVICE_CLASS (klass);
-  GObjectClass *object_class = G_OBJECT_CLASS (klass);
-
-  object_class->finalize = gdk_device_winpointer_finalize;
-  device_class->set_surface_cursor = gdk_device_winpointer_set_surface_cursor;
-  device_class->grab = gdk_device_winpointer_grab;
-  device_class->ungrab = gdk_device_winpointer_ungrab;
-  device_class->surface_at_position = gdk_device_winpointer_surface_at_position;
-}
@@ -1,67 +0,0 @@
-/* GDK - The GIMP Drawing Kit
- * Copyright (C) 2020 the GTK team
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef __GDK_DEVICE_WINPOINTER_H__
-#define __GDK_DEVICE_WINPOINTER_H__
-
-#include <gdk/gdkdeviceprivate.h>
-
-#include <windows.h>
-
-#include "winpointer.h"
-
-G_BEGIN_DECLS
-
-#define GDK_TYPE_DEVICE_WINPOINTER         (gdk_device_winpointer_get_type ())
-#define GDK_DEVICE_WINPOINTER(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), GDK_TYPE_DEVICE_WINPOINTER, GdkDeviceWinpointer))
-#define GDK_DEVICE_WINPOINTER_CLASS(c)     (G_TYPE_CHECK_CLASS_CAST ((c), GDK_TYPE_DEVICE_WINPOINTER, GdkDeviceWinpointerClass))
-#define GDK_IS_DEVICE_WINPOINTER(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), GDK_TYPE_DEVICE_WINPOINTER))
-#define GDK_IS_DEVICE_WINPOINTER_CLASS(c)  (G_TYPE_CHECK_CLASS_TYPE ((c), GDK_TYPE_DEVICE_WINPOINTER))
-#define GDK_DEVICE_WINPOINTER_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GDK_TYPE_DEVICE_WINPOINTER, GdkDeviceWinpointerClass))
-
-typedef struct _GdkDeviceWinpointer GdkDeviceWinpointer;
-typedef struct _GdkDeviceWinpointerClass GdkDeviceWinpointerClass;
-
-struct _GdkDeviceWinpointer
-{
-  GdkDevice parent_instance;
-
-  HANDLE device_handle;
-  UINT32 start_cursor_id;
-  UINT32 end_cursor_id;
-
-  int origin_x;
-  int origin_y;
-  double scale_x;
-  double scale_y;
-
-  GdkModifierType last_button_mask;
-
-  GdkDeviceTool *tool_pen;
-  GdkDeviceTool *tool_eraser;
-};
-
-struct _GdkDeviceWinpointerClass
-{
-  GdkDeviceClass parent_class;
-};
-
-GType gdk_device_winpointer_get_type (void) G_GNUC_CONST;
-
-G_END_DECLS
-
-#endif /* __GDK_DEVICE_WINPOINTER_H__ */
@@ -88,7 +88,7 @@ gdk_device_wintab_query_state (GdkDevice        *device,
      hwnd = NULL;
    }

-  _gdk_win32_get_cursor_pos (&point);
+  GetCursorPos (&point);

  if (hwnd)
    ScreenToClient (hwnd, &point);
@@ -29,9 +29,7 @@
 #include "gdkdevice-win32.h"
 #include "gdkdevice-virtual.h"
 #include "gdkdevice-wintab.h"
-#include "gdkinput-winpointer.h"
 #include "gdkdisplayprivate.h"
-#include "gdkdisplay-win32.h"
 #include "gdkseatdefaultprivate.h"

 #define WINTAB32_DLL "Wintab32.dll"
@@ -373,6 +371,9 @@ wintab_init_check (GdkDeviceManagerWin32 *device_manager)

  wintab_contexts = NULL;

+  if (_gdk_input_ignore_wintab)
+    return;
+
  n = GetSystemDirectory (&dummy, 0);

  if (n <= 0)
@@ -683,13 +684,10 @@ wintab_default_display_notify_cb (GdkDisplayManager *display_manager)
 static void
 gdk_device_manager_win32_constructed (GObject *object)
 {
-  GdkWin32Display *display_win32;
  GdkDeviceManagerWin32 *device_manager;
  GdkSeat *seat;
-  const char *api_preference = NULL;
-  gboolean have_api_preference = TRUE;
-
-  display_win32 = GDK_WIN32_DISPLAY (_gdk_display);
+  GdkDisplayManager *display_manager = NULL;
+  GdkDisplay *default_display = NULL;

  device_manager = GDK_DEVICE_MANAGER_WIN32 (object);
  device_manager->core_pointer =
@@ -730,59 +728,18 @@ gdk_device_manager_win32_constructed (GObject *object)
  gdk_seat_default_add_physical_device (GDK_SEAT_DEFAULT (seat), device_manager->system_keyboard);
  g_object_unref (seat);

-  _gdk_device_manager = device_manager;
+  /* Only call Wintab init stuff after the default display
+   * is globally known and accessible through the display manager
+   * singleton. Approach lifted from gtkmodules.c.
+   */
+  display_manager = gdk_display_manager_get ();
+  g_assert (display_manager != NULL);
+  default_display = gdk_display_manager_get_default_display (display_manager);
+  g_assert (default_display == NULL);

-  api_preference = g_getenv ("GDK_WIN32_TABLET_INPUT_API");
-  if (g_strcmp0 (api_preference, "none") == 0)
-    {
-      display_win32->tablet_input_api = GDK_WIN32_TABLET_INPUT_API_NONE;
-    }
-  else if (g_strcmp0 (api_preference, "wintab") == 0)
-    {
-      display_win32->tablet_input_api = GDK_WIN32_TABLET_INPUT_API_WINTAB;
-    }
-  else if (g_strcmp0 (api_preference, "winpointer") == 0)
-    {
-      display_win32->tablet_input_api = GDK_WIN32_TABLET_INPUT_API_WINPOINTER;
-    }
-  else
-    {
-      /* No user preference, default to WinPointer. If unsuccessful,
-       * try to initialize other API's in sequence until one succeeds.
-       */
-      display_win32->tablet_input_api = GDK_WIN32_TABLET_INPUT_API_WINPOINTER;
-      have_api_preference = FALSE;
-    }
-
-  if (display_win32->tablet_input_api == GDK_WIN32_TABLET_INPUT_API_WINPOINTER)
-    {
-      gboolean init_successful = gdk_winpointer_initialize ();
-
-      if (!init_successful && !have_api_preference)
-        {
-          /* Try Wintab */
-          display_win32->tablet_input_api = GDK_WIN32_TABLET_INPUT_API_WINTAB;
-        }
-    }
-
-  if (display_win32->tablet_input_api == GDK_WIN32_TABLET_INPUT_API_WINTAB)
-    {
-      GdkDisplayManager *display_manager = NULL;
-      GdkDisplay *default_display = NULL;
-
-      /* Only call Wintab init stuff after the default display
-       * is globally known and accessible through the display manager
-       * singleton. Approach lifted from gtkmodules.c.
-       */
-      display_manager = gdk_display_manager_get ();
-      g_assert (display_manager != NULL);
-      default_display = gdk_display_manager_get_default_display (display_manager);
-      g_assert (default_display == NULL);
-
-      g_signal_connect (display_manager, "notify::default-display",
-                        G_CALLBACK (wintab_default_display_notify_cb),
-                        NULL);
-    }
+  g_signal_connect (display_manager, "notify::default-display",
+                    G_CALLBACK (wintab_default_display_notify_cb),
+                    NULL);
 }

 static void
@@ -795,7 +752,7 @@ gdk_device_manager_win32_class_init (GdkDeviceManagerWin32Class *klass)
 }

 void
-_gdk_wintab_set_tablet_active (void)
+_gdk_input_set_tablet_active (void)
 {
  GList *tmp_list;
  HCTX *hctx;
@@ -806,7 +763,7 @@ _gdk_wintab_set_tablet_active (void)
  if (!wintab_contexts)
    return; /* No tablet devices found, or Wintab not initialized yet */

-  GDK_NOTE (INPUT, g_print ("_gdk_wintab_set_tablet_active: "
+  GDK_NOTE (INPUT, g_print ("_gdk_input_set_tablet_active: "
                            "Bringing Wintab contexts to the top of the overlap order\n"));

  tmp_list = wintab_contexts;
@@ -909,7 +866,7 @@ gdk_device_manager_find_wintab_device (GdkDeviceManagerWin32 *device_manager,
 }

 GdkEvent *
-gdk_wintab_make_event (GdkDisplay *display,
+gdk_input_other_event (GdkDisplay *display,
                       MSG        *msg,
                       GdkSurface  *window)
 {
@@ -937,7 +894,7 @@ gdk_wintab_make_event (GdkDisplay *display,

  if (window != wintab_window)
    {
-      g_warning ("gdk_wintab_make_event: not wintab_window?");
+      g_warning ("gdk_input_other_event: not wintab_window?");
      return NULL;
    }

@@ -948,7 +905,7 @@ gdk_wintab_make_event (GdkDisplay *display,
    g_object_ref (window);

  GDK_NOTE (EVENTS_OR_INPUT,
-	    g_print ("gdk_wintab_make_event: window=%p %+g%+g\n",
+	    g_print ("gdk_input_other_event: window=%p %+g%+g\n",
               window ? GDK_SURFACE_HWND (window) : NULL, x, y));

  if (msg->message == WT_PACKET || msg->message == WT_CSRCHANGE)
@@ -40,8 +40,6 @@ struct _GdkDeviceManagerWin32
  /* Fake physical devices */
  GdkDevice *system_pointer;
  GdkDevice *system_keyboard;
-
-  GList *winpointer_devices;
  GList *wintab_devices;

  /* Bumped up every time a wintab device enters the proximity
@@ -58,8 +56,8 @@ struct _GdkDeviceManagerWin32Class

 GType gdk_device_manager_win32_get_type (void) G_GNUC_CONST;

-void     _gdk_wintab_set_tablet_active (void);
-GdkEvent * gdk_wintab_make_event      (GdkDisplay *display,
+void     _gdk_input_set_tablet_active (void);
+GdkEvent * gdk_input_other_event      (GdkDisplay *display,
                                       MSG        *msg,
                                       GdkSurface  *window);

@@ -18,6 +18,7 @@

 #include "config.h"

+#define _WIN32_WINNT 0x0600
 #define VK_USE_PLATFORM_WIN32_KHR

 #include "gdk.h"
@@ -534,6 +535,7 @@ _gdk_win32_display_open (const char *display_name)

  _gdk_win32_lang_notification_init ();
  _gdk_drag_init ();
+  _gdk_drop_init ();

  _gdk_display->clipboard = gdk_win32_clipboard_new (_gdk_display);
  _gdk_display->primary_clipboard = gdk_clipboard_new (_gdk_display);
@@ -99,12 +99,6 @@ typedef struct _GdkWin32User32DPIFuncs
  funcADACE areDACEqual;
 } GdkWin32User32DPIFuncs;

-typedef enum {
-  GDK_WIN32_TABLET_INPUT_API_NONE,
-  GDK_WIN32_TABLET_INPUT_API_WINTAB,
-  GDK_WIN32_TABLET_INPUT_API_WINPOINTER
-} GdkWin32TabletInputAPI;
-
 /* Detect running architecture */
 typedef BOOL (WINAPI *funcIsWow64Process2) (HANDLE, USHORT *, USHORT *);
 typedef struct _GdkWin32KernelCPUFuncs
@@ -165,9 +159,7 @@ struct _GdkWin32Display

  GdkWin32ShcoreFuncs shcore_funcs;
  GdkWin32User32DPIFuncs user32_dpi_funcs;
-
-  GdkWin32TabletInputAPI tablet_input_api;
-
+  
  /* Cursor Items (GdkCursor->GdkWin32HCursor) */
  GHashTable *cursors;
  /* The cursor that is used by current grab (if any) */
@@ -158,6 +158,9 @@
 * drag window) in response to this, as all the functions
 * that GDK could perform here are already handled by the
 * OS driving the DnD process via DoDragDrop() call.
+ * The LOCAL protocol, on the other hand, does a lot,
+ * similar to what X11 backend does with XDND - it sends
+ * GDK_DRAG_LEAVE and GDK_DRAG_ENTER, emits GDK_DRAG_MOTION.
 *
 * GDK_BUTTON_RELEASE checks the
 * released button - if it's the button that was used to
@@ -178,7 +181,11 @@
 * the OS notifies the process about these things happening.
 * For X11 backend that is done in Xdnd event filters,
 * for W32 backend this is done in IDropSource/IDropTarget
- * object methods for the OLE2 protocol.
+ * object methods for the OLE2 protocol, whereas for the
+ * LOCAL protocol these events are emitted only by GDK itself
+ * (with the exception of WM_DROPFILES message, which causes
+ *  GDK to create a drop context and then immediately finish
+ *  the drag, providing the list of files it got from the message).
 * 
 */

@@ -480,6 +487,17 @@ process_dnd_queue (gboolean                   timed,
  return FALSE;
 }

+void
+_gdk_win32_local_drag_drop_response (GdkDrag        *drag,
+                                     GdkDragAction   action)
+{
+  GDK_NOTE (DND, g_print ("_gdk_win32_local_drag_drop_response: 0x%p\n",
+                          drag));
+
+  g_signal_emit_by_name (drag, "dnd-finished");
+  gdk_drag_drop_done (drag, action != 0);
+}
+
 static gboolean
 do_drag_drop_response (gpointer user_data)
 {
@@ -696,6 +714,16 @@ _gdk_win32_dnd_thread_main (gpointer data)
  return NULL;
 }

+/* For the LOCAL protocol */
+typedef enum {
+  GDK_DRAG_STATUS_DRAG,
+  GDK_DRAG_STATUS_MOTION_WAIT,
+  GDK_DRAG_STATUS_ACTION_WAIT,
+  GDK_DRAG_STATUS_DROP
+} GdkDragStatus;
+
+static gboolean use_ole2_dnd = TRUE;
+
 static gboolean drag_context_grab (GdkDrag *drag);

 G_DEFINE_TYPE (GdkWin32Drag, gdk_win32_drag, GDK_TYPE_DRAG)
@@ -763,7 +791,8 @@ gdk_drag_new (GdkDisplay         *display,
              GdkSurface         *surface,
              GdkContentProvider *content,
              GdkDragAction       actions,
-              GdkDevice          *device)
+              GdkDevice          *device,
+              GdkDragProtocol     protocol)
 {
  GdkWin32Drag *drag_win32;
  GdkWin32Display *display_win32 = GDK_WIN32_DISPLAY (display);
@@ -783,6 +812,8 @@ gdk_drag_new (GdkDisplay         *display,
  else
    drag_win32->scale = gdk_win32_display_get_monitor_scale_factor (display_win32, NULL, NULL);

+  drag_win32->protocol = protocol;
+
  return drag;
 }

@@ -1050,6 +1081,21 @@ maybe_emit_action_changed (GdkWin32Drag        *drag_win32,
    }
 }

+void
+_gdk_win32_local_drag_give_feedback (GdkDrag        *drag,
+                                     GdkDragAction   actions)
+{
+  GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (drag);
+
+  if (drag_win32->drag_status == GDK_DRAG_STATUS_MOTION_WAIT)
+    drag_win32->drag_status = GDK_DRAG_STATUS_DRAG;
+
+  GDK_NOTE (DND, g_print ("_gdk_win32_local_drag_give_feedback: 0x%p\n",
+                          drag));
+
+  maybe_emit_action_changed (drag_win32, actions);
+}
+
 static gboolean
 give_feedback (gpointer user_data)
 {
@@ -1624,20 +1670,30 @@ enum_formats_new (GArray *formats)
 void
 _gdk_drag_init (void)
 {
-  HRESULT hr;
-
  CoInitializeEx (NULL, COINIT_APARTMENTTHREADED);

-  hr = OleInitialize (NULL);
+  if (g_strcmp0 (getenv ("GDK_WIN32_OLE2_DND"), "0") == 0)
+    use_ole2_dnd = FALSE;

-  if (! SUCCEEDED (hr))
-    g_error ("OleInitialize failed");
+  if (use_ole2_dnd)
+    {
+      HRESULT hr;
+
+      hr = OleInitialize (NULL);
+
+      if (! SUCCEEDED (hr))
+        g_error ("OleInitialize failed");
+    }
 }

 void
 _gdk_win32_dnd_exit (void)
 {
-  OleUninitialize ();
+  if (use_ole2_dnd)
+    {
+      OleUninitialize ();
+    }
+
  CoUninitialize ();
 }

@@ -1667,9 +1723,6 @@ _gdk_win32_surface_drag_begin (GdkSurface         *surface,
  GdkWin32Clipdrop *clipdrop = _gdk_win32_clipdrop_get ();
  double px, py;
  int x_root, y_root;
-  GdkWin32DnDThreadDoDragDrop *ddd;
-  source_drag_context *source_ctx;
-  data_object         *data_obj;

  g_return_val_if_fail (surface != NULL, NULL);

@@ -1677,7 +1730,8 @@ _gdk_win32_surface_drag_begin (GdkSurface         *surface,
                       surface,
                       content,
                       actions,
-                       device);
+                       device,
+                       use_ole2_dnd ? GDK_DRAG_PROTO_OLE2 : GDK_DRAG_PROTO_LOCAL);
  drag_win32 = GDK_WIN32_DRAG (drag);

  GDK_NOTE (DND, g_print ("_gdk_win32_surface_drag_begin\n"));
@@ -1701,35 +1755,121 @@ _gdk_win32_surface_drag_begin (GdkSurface         *surface,
      return FALSE;
    }

-  ddd = g_new0 (GdkWin32DnDThreadDoDragDrop, 1);
+  if (drag_win32->protocol == GDK_DRAG_PROTO_OLE2)
+    {
+      GdkWin32DnDThreadDoDragDrop *ddd = g_new0 (GdkWin32DnDThreadDoDragDrop, 1);
+      source_drag_context *source_ctx;
+      data_object         *data_obj;

-  source_ctx = source_context_new (drag, gdk_drag_get_formats (drag));
-  data_obj = data_object_new (drag);
+      source_ctx = source_context_new (drag, gdk_drag_get_formats (drag));
+      data_obj = data_object_new (drag);

-  ddd->base.item_type = GDK_WIN32_DND_THREAD_QUEUE_ITEM_DO_DRAG_DROP;
-  ddd->base.opaque_context = drag_win32;
-  ddd->src_context = source_ctx;
-  ddd->src_object = data_obj;
-  ddd->allowed_drop_effects = 0;
-  if (actions & GDK_ACTION_COPY)
-    ddd->allowed_drop_effects |= DROPEFFECT_COPY;
-  if (actions & GDK_ACTION_MOVE)
-    ddd->allowed_drop_effects |= DROPEFFECT_MOVE;
-  if (actions & GDK_ACTION_LINK)
-    ddd->allowed_drop_effects |= DROPEFFECT_LINK;
+      ddd->base.item_type = GDK_WIN32_DND_THREAD_QUEUE_ITEM_DO_DRAG_DROP;
+      ddd->base.opaque_context = drag_win32;
+      ddd->src_context = source_ctx;
+      ddd->src_object = data_obj;
+      ddd->allowed_drop_effects = 0;
+      if (actions & GDK_ACTION_COPY)
+        ddd->allowed_drop_effects |= DROPEFFECT_COPY;
+      if (actions & GDK_ACTION_MOVE)
+        ddd->allowed_drop_effects |= DROPEFFECT_MOVE;
+      if (actions & GDK_ACTION_LINK)
+        ddd->allowed_drop_effects |= DROPEFFECT_LINK;

-  g_hash_table_replace (clipdrop->active_source_drags, g_object_ref (drag), ddd);
-  increment_dnd_queue_counter ();
-  g_async_queue_push (clipdrop->dnd_queue, ddd);
-  API_CALL (PostThreadMessage, (clipdrop->dnd_thread_id, thread_wakeup_message, 0, 0));
+      g_hash_table_replace (clipdrop->active_source_drags, g_object_ref (drag), ddd);
+      increment_dnd_queue_counter ();
+      g_async_queue_push (clipdrop->dnd_queue, ddd);
+      API_CALL (PostThreadMessage, (clipdrop->dnd_thread_id, thread_wakeup_message, 0, 0));

-  drag_win32->util_data.state = GDK_WIN32_DND_PENDING;
+      drag_win32->util_data.state = GDK_WIN32_DND_PENDING;
+    }

  move_drag_surface (drag, x_root, y_root);

  return drag;
 }

+/* TODO: remove this?
+ * window finder is only used by our gdk_drag_update() to
+ * find the window at drag coordinates - which is
+ * something IDropSourceNotify already gives us.
+ * Unless, of course, we keep the LOCAL protocol around.
+ */
+typedef struct {
+  int x;
+  int y;
+  HWND ignore;
+  HWND result;
+} find_window_enum_arg;
+
+static BOOL CALLBACK
+find_window_enum_proc (HWND   hwnd,
+                       LPARAM lparam)
+{
+  RECT rect;
+  POINT tl, br;
+  find_window_enum_arg *a = (find_window_enum_arg *) lparam;
+
+  if (hwnd == a->ignore)
+    return TRUE;
+
+  if (!IsWindowVisible (hwnd))
+    return TRUE;
+
+  tl.x = tl.y = 0;
+  ClientToScreen (hwnd, &tl);
+  GetClientRect (hwnd, &rect);
+  br.x = rect.right;
+  br.y = rect.bottom;
+  ClientToScreen (hwnd, &br);
+
+  if (a->x >= tl.x && a->y >= tl.y && a->x < br.x && a->y < br.y)
+    {
+      a->result = hwnd;
+      return FALSE;
+    }
+  else
+    return TRUE;
+}
+
+/* Finds the HWND under cursor. Local DnD protocol
+ * uses this function, since local protocol is implemented
+ * entirely in GDK and cannot rely on the OS to notify
+ * drop targets about drags that move over them.
+ */
+static HWND
+gdk_win32_drag_find_window (GdkDrag    *drag,
+                            GdkSurface *drag_surface,
+                            int         x_root,
+                            int         y_root)
+{
+  GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (drag);
+  find_window_enum_arg a;
+
+  g_assert (_win32_main_thread == NULL ||
+            _win32_main_thread == g_thread_self ());
+
+  a.x = x_root * drag_win32->scale - _gdk_offset_x;
+  a.y = y_root * drag_win32->scale - _gdk_offset_y;
+  a.ignore = drag_surface ? GDK_SURFACE_HWND (drag_surface) : NULL;
+  a.result = INVALID_HANDLE_VALUE;
+
+  GDK_NOTE (DND,
+            g_print ("gdk_win32_drag_find_window: %p %+d%+d\n",
+                     (drag_surface ? GDK_SURFACE_HWND (drag_surface) : NULL),
+                     a.x, a.y));
+
+  EnumWindows (find_window_enum_proc, (LPARAM) &a);
+
+  GDK_NOTE (DND,
+            g_print ("gdk_win32_drag_find_window: %p %+d%+d: %p\n",
+                     (drag_surface ? GDK_SURFACE_HWND (drag_surface) : NULL),
+                     x_root, y_root,
+                     a.result));
+
+  return a.result;
+}
+
 static DWORD
 manufacture_keystate_from_GMT (GdkModifierType state)
 {
@@ -1751,6 +1891,100 @@ manufacture_keystate_from_GMT (GdkModifierType state)
  return key_state;
 }

+/* This only works if dest_window our window and the DnD operation
+ * is currently local to the application.
+ */
+static GdkDrop *
+_gdk_win32_get_drop_for_dest_window (HWND dest_window)
+{
+  GdkSurface *drop_surface = gdk_win32_handle_table_lookup (dest_window);
+  GdkDrop    *result = NULL;
+
+  if (drop_surface)
+    result = _gdk_win32_get_drop_for_dest_surface (drop_surface);
+
+  return result;
+}
+
+static gboolean
+gdk_win32_local_drag_motion (GdkDrag         *drag,
+                             HWND             dest_window,
+                             int              x_root,
+                             int              y_root,
+                             GdkDragAction    possible_actions,
+                             DWORD            key_state,
+                             guint32          time_)
+{
+  GdkWin32Drag *drag_win32;
+  GdkDrop *drop;
+  GdkDragAction actions;
+
+  g_assert (_win32_main_thread == NULL ||
+            _win32_main_thread == g_thread_self ());
+
+  g_return_val_if_fail (drag != NULL, FALSE);
+
+  drag_win32 = GDK_WIN32_DRAG (drag);
+
+  drop = _gdk_win32_get_drop_for_dest_window (drag_win32->dest_window);
+
+  actions = gdk_drag_get_actions (drag);
+
+  GDK_NOTE (DND, g_print ("gdk_win32_local_drag_motion: @ %+d:%+d possible=%s\n"
+                          " dest=%p (current %p) drop=%p drag=%p:{actions=%s,action=%s}\n",
+                          x_root, y_root,
+                          _gdk_win32_drag_action_to_string (possible_actions),
+                          dest_window, drag_win32->dest_window, drop, drag,
+                          _gdk_win32_drag_action_to_string (actions),
+                          _gdk_win32_drag_action_to_string (gdk_drag_get_selected_action (drag))));
+
+  if (drag_win32->dest_window != dest_window)
+    {
+      /* Send a leave to the last destination */
+      if (drop)
+        _gdk_win32_local_drop_target_dragleave (drop, time_);
+
+      drag_win32->dest_window = dest_window;
+      drag_win32->drag_status = GDK_DRAG_STATUS_DRAG;
+
+      _gdk_win32_local_drop_target_dragenter (drag,
+                                              gdk_win32_handle_table_lookup (dest_window),
+                                              x_root,
+                                              y_root,
+                                              key_state,
+                                              time_,
+                                              &actions);
+
+      drop = _gdk_win32_get_drop_for_dest_window (drag_win32->dest_window);
+      maybe_emit_action_changed (drag_win32, actions);
+    }
+
+  /* Send a drag-motion event */
+
+  drag_win32->util_data.last_x = x_root;
+  drag_win32->util_data.last_y = y_root;
+
+  if (drop != NULL &&
+      drag_win32->drag_status == GDK_DRAG_STATUS_DRAG &&
+      _gdk_win32_local_drop_target_will_emit_motion (drop, x_root, y_root, key_state))
+    {
+      actions = gdk_drag_get_actions (drag);
+      drag_win32->drag_status = GDK_DRAG_STATUS_MOTION_WAIT;
+
+      _gdk_win32_local_drop_target_dragover (drop, drag, x_root, y_root, key_state, time_, &actions);
+
+      maybe_emit_action_changed (drag_win32, actions);
+    }
+
+  GDK_NOTE (DND, g_print (" returning %s\n"
+                          " drag=%p:{actions=%s,action=%s}\n",
+                          (drop != NULL && drag_win32->drag_status == GDK_DRAG_STATUS_DRAG) ? "TRUE" : "FALSE",
+                          drag,
+                          _gdk_win32_drag_action_to_string (gdk_drag_get_actions (drag)),
+                          _gdk_win32_drag_action_to_string (gdk_drag_get_selected_action (drag))));
+  return (drop != NULL && drag_win32->drag_status == GDK_DRAG_STATUS_DRAG);
+}
+
 static void
 send_source_state_update (GdkWin32Clipdrop    *clipdrop,
                          GdkWin32Drag        *drag_win32,
@@ -1771,7 +2005,6 @@ gdk_win32_drag_drop (GdkDrag *drag,
 {
  GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (drag);
  GdkWin32Clipdrop *clipdrop = _gdk_win32_clipdrop_get ();
-  gpointer ddd;

  g_assert (_win32_main_thread == NULL ||
            _win32_main_thread == g_thread_self ());
@@ -1780,12 +2013,29 @@ gdk_win32_drag_drop (GdkDrag *drag,

  GDK_NOTE (DND, g_print ("gdk_win32_drag_drop\n"));

-  ddd = g_hash_table_lookup (clipdrop->active_source_drags, drag);
+  if (drag_win32->protocol == GDK_DRAG_PROTO_LOCAL)
+    {
+      GdkDrop *drop = _gdk_win32_get_drop_for_dest_window (drag_win32->dest_window);

-  drag_win32->util_data.state = GDK_WIN32_DND_DROPPED;
+      if (drop)
+        {
+          GdkDragAction actions;

-  if (ddd)
-    send_source_state_update (clipdrop, drag_win32, ddd);
+          actions = gdk_drag_get_actions (drag);
+          _gdk_win32_local_drop_target_drop (drop, drag, time_, &actions);
+          maybe_emit_action_changed (drag_win32, actions);
+          _gdk_win32_local_drag_drop_response (drag, actions);
+        }
+    }
+  else if (drag_win32->protocol == GDK_DRAG_PROTO_OLE2)
+    {
+      gpointer ddd = g_hash_table_lookup (clipdrop->active_source_drags, drag);
+
+      drag_win32->util_data.state = GDK_WIN32_DND_DROPPED;
+
+      if (ddd)
+        send_source_state_update (clipdrop, drag_win32, ddd);
+    }
 }

 static void
@@ -1875,8 +2125,6 @@ gdk_win32_drag_drop_done (GdkDrag  *drag,
 {
  GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (drag);
  GdkDragAnim *anim;
-  GdkWin32Clipdrop *clipdrop;
-  gpointer ddd;
 /*
  cairo_surface_t *win_surface;
  cairo_surface_t *surface;
@@ -1891,16 +2139,23 @@ gdk_win32_drag_drop_done (GdkDrag  *drag,
  /* FIXME: This is temporary, until the code is fixed to ensure that
   * gdk_drag_finish () is called by GTK.
   */
-  clipdrop = _gdk_win32_clipdrop_get ();
-  ddd = g_hash_table_lookup (clipdrop->active_source_drags, drag);
+  if (drag_win32->protocol == GDK_DRAG_PROTO_OLE2)
+    {
+      GdkWin32Clipdrop *clipdrop = _gdk_win32_clipdrop_get ();
+      gpointer ddd = g_hash_table_lookup (clipdrop->active_source_drags, drag);

-  if (success)
-    drag_win32->util_data.state = GDK_WIN32_DND_DROPPED;
-  else
-    drag_win32->util_data.state = GDK_WIN32_DND_NONE;
+      if (success)
+        drag_win32->util_data.state = GDK_WIN32_DND_DROPPED;
+      else
+        drag_win32->util_data.state = GDK_WIN32_DND_NONE;

-  if (ddd)
-    send_source_state_update (clipdrop, drag_win32, ddd);
+      if (ddd)
+        send_source_state_update (clipdrop, drag_win32, ddd);
+    }
+  else if (drag_win32->protocol == GDK_DRAG_PROTO_LOCAL)
+    {
+      
+    }

  drag_win32->handle_events = FALSE;

@@ -2026,6 +2281,14 @@ gdk_win32_drag_cancel (GdkDrag             *drag,
                          drag,
                          reason_str));

+  if (drag_win32->protocol == GDK_DRAG_PROTO_LOCAL)
+    {
+      GdkDrop *drop = _gdk_win32_get_drop_for_dest_window (drag_win32->dest_window);
+      if (drop)
+        _gdk_win32_local_drop_target_dragleave (drop, GDK_CURRENT_TIME);
+      drop = NULL;
+    }
+
  gdk_drag_set_cursor (drag, NULL);
  drag_context_ungrab (drag);
  gdk_drag_drop_done (drag, FALSE);
@@ -2047,6 +2310,28 @@ gdk_win32_drag_drop_performed (GdkDrag *drag,
 #define BIG_STEP 20
 #define SMALL_STEP 1

+static void
+gdk_local_drag_update (GdkDrag *drag,
+                       double   x_root,
+                       double   y_root,
+                       DWORD    grfKeyState,
+                       guint32  evtime)
+{
+  GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (drag);
+  HWND dest_window;
+
+  g_assert (_win32_main_thread == NULL ||
+            _win32_main_thread == g_thread_self ());
+
+  dest_window = gdk_win32_drag_find_window (drag,
+                                            drag_win32->drag_surface,
+                                            x_root, y_root);
+
+  gdk_win32_local_drag_motion (drag, dest_window, x_root, y_root,
+                               gdk_drag_get_actions (drag),
+                               grfKeyState, evtime);
+}
+
 static gboolean
 gdk_dnd_handle_motion_event (GdkDrag  *drag,
                             GdkEvent *event)
@@ -2056,7 +2341,6 @@ gdk_dnd_handle_motion_event (GdkDrag  *drag,
  DWORD key_state;
  double x, y;
  double x_root, y_root;
-  GdkWin32Clipdrop *clipdrop;

  GDK_NOTE (DND, g_print ("gdk_dnd_handle_motion_event: 0x%p\n", drag));

@@ -2071,18 +2355,26 @@ gdk_dnd_handle_motion_event (GdkDrag  *drag,

  key_state = manufacture_keystate_from_GMT (state);

-  clipdrop = _gdk_win32_clipdrop_get ();
+  if (drag_win32->protocol == GDK_DRAG_PROTO_LOCAL)
+    {
+      gdk_local_drag_update (drag, x_root, y_root, key_state,
+                             gdk_event_get_time (event));
+    }
+  else if (drag_win32->protocol == GDK_DRAG_PROTO_OLE2)
+    {
+      GdkWin32Clipdrop *clipdrop = _gdk_win32_clipdrop_get ();

-  GDK_NOTE (DND, g_print ("Post WM_MOUSEMOVE keystate=%lu\n", key_state));
+      GDK_NOTE (DND, g_print ("Post WM_MOUSEMOVE keystate=%lu\n", key_state));

-  drag_win32->util_data.last_x = x_root;
-  drag_win32->util_data.last_y = y_root;
+      drag_win32->util_data.last_x = x_root;
+      drag_win32->util_data.last_y = y_root;

-  API_CALL (PostThreadMessage, (clipdrop->dnd_thread_id,
-                                WM_MOUSEMOVE,
-                                key_state,
-                                MAKELPARAM (x * drag_win32->scale,
-                                            y * drag_win32->scale)));
+      API_CALL (PostThreadMessage, (clipdrop->dnd_thread_id,
+                                    WM_MOUSEMOVE,
+                                    key_state,
+                                    MAKELPARAM (x * drag_win32->scale,
+                                                y * drag_win32->scale)));
+    }

  return TRUE;
 }
@@ -2164,6 +2456,11 @@ gdk_dnd_handle_key_event (GdkDrag  *drag,
  if (drag_win32->drag_surface)
    move_drag_surface (drag, drag_win32->util_data.last_x, drag_win32->util_data.last_y);

+  if (drag_win32->protocol == GDK_DRAG_PROTO_LOCAL)
+    gdk_local_drag_update (drag, drag_win32->util_data.last_x, drag_win32->util_data.last_y,
+                           manufacture_keystate_from_GMT (state),
+                           gdk_event_get_time (event));
+
  return TRUE;
 }

@@ -140,6 +140,9 @@ struct _drop_target_context
  IDataObject                    *data_object;
 };

+/* TRUE to use OLE2 protocol, FALSE to use local protocol */
+static gboolean use_ole2_dnd = TRUE;
+
 static void
 gdk_win32_drop_init (GdkWin32Drop *drop)
 {
@@ -193,6 +196,28 @@ gdk_drop_new (GdkDisplay        *display,
  return GDK_DROP (drop_win32);
 }

+/* Gets the GdkDrop that corresponds to a particular GdkSurface.
+ * Will be NULL for surfaces that are not registered as drop targets,
+ * or for surfaces that are currently not under the drag cursor.
+ * This function is only used for local DnD, where we do have
+ * a real GdkSurface that corresponds to the HWND under cursor.
+ */
+GdkDrop *
+_gdk_win32_get_drop_for_dest_surface (GdkSurface *dest)
+{
+  GdkWin32Surface *impl;
+
+  if (dest == NULL)
+    return NULL;
+
+  impl = GDK_WIN32_SURFACE (dest);
+
+  if (impl->drop_target != NULL)
+    return impl->drop_target->drop;
+
+  return impl->drop;
+}
+

 #define PRINT_GUID(guid) \
  g_print ("%.08lx-%.04x-%.04x-%.02x%.02x-%.02x%.02x%.02x%.02x%.02x%.02x", \
@@ -426,6 +451,51 @@ set_source_actions_helper (GdkDrop       *drop,
  return actions;
 }

+void
+_gdk_win32_local_drop_target_dragenter (GdkDrag        *drag,
+                                        GdkSurface     *dest_surface,
+                                        int             x_root,
+                                        int             y_root,
+                                        DWORD           grfKeyState,
+                                        guint32         time_,
+                                        GdkDragAction  *actions)
+{
+  GdkDrop *drop;
+  GdkWin32Drop *drop_win32;
+  GdkDisplay *display;
+  GdkDragAction source_actions;
+  GdkWin32Surface *impl = GDK_WIN32_SURFACE (dest_surface);
+
+  GDK_NOTE (DND, g_print ("_gdk_win32_local_drop_target_dragenter %p @ %d : %d"
+                          " for dest window 0x%p"
+                          ". actions = %s\n",
+                          drag, x_root, y_root,
+                          dest_surface,
+                          _gdk_win32_drag_action_to_string (*actions)));
+
+  display = gdk_surface_get_display (dest_surface);
+  drop = gdk_drop_new (display,
+                       gdk_seat_get_pointer (gdk_display_get_default_seat (display)),
+                       drag,
+                       gdk_drag_get_formats (drag),
+                       dest_surface,
+                       GDK_DRAG_PROTO_LOCAL);
+  drop_win32 = GDK_WIN32_DROP (drop);
+
+  impl->drop = drop;
+
+  source_actions = set_source_actions_helper (drop, *actions, grfKeyState);
+
+  gdk_drop_emit_enter_event (drop, TRUE, x_root, y_root, time_);
+  drop_win32->last_key_state = grfKeyState;
+  drop_win32->last_x = x_root;
+  drop_win32->last_y = y_root;
+  *actions = filter_actions (drop_win32->actions, source_actions);
+
+  GDK_NOTE (DND, g_print ("_gdk_win32_local_drop_target_dragenter returns with actions %s\n",
+                          _gdk_win32_drag_action_to_string (*actions)));
+}
+
 /* The pdwEffect here initially points
 * to a DWORD that contains the value of dwOKEffects argument in DoDragDrop,
 * i.e. the drag action that the drag source deems acceptable.
@@ -505,6 +575,55 @@ idroptarget_dragenter (LPDROPTARGET This,
  return S_OK;
 }

+gboolean
+_gdk_win32_local_drop_target_will_emit_motion (GdkDrop *drop,
+                                               int      x_root,
+                                               int      y_root,
+                                               DWORD    grfKeyState)
+{
+  GdkWin32Drop *drop_win32 = GDK_WIN32_DROP (drop);
+
+  if (x_root != drop_win32->last_x ||
+      y_root != drop_win32->last_y ||
+      grfKeyState != drop_win32->last_key_state)
+    return TRUE;
+
+  return FALSE;
+}
+
+void
+_gdk_win32_local_drop_target_dragover (GdkDrop        *drop,
+                                       GdkDrag        *drag,
+                                       int             x_root,
+                                       int             y_root,
+                                       DWORD           grfKeyState,
+                                       guint32         time_,
+                                       GdkDragAction  *actions)
+{
+  GdkWin32Drop *drop_win32 = GDK_WIN32_DROP (drop);
+  GdkDragAction source_actions;
+
+  source_actions = set_source_actions_helper (drop, *actions, grfKeyState);
+
+  GDK_NOTE (DND, g_print ("_gdk_win32_local_drop_target_dragover %p @ %d : %d"
+                          ", actions = %s\n",
+                          drop, x_root, y_root,
+                          _gdk_win32_drag_action_to_string (*actions)));
+
+  if (_gdk_win32_local_drop_target_will_emit_motion (drop, x_root, y_root, grfKeyState))
+    {
+      gdk_drop_emit_motion_event (drop, TRUE, x_root, y_root, time_);
+      drop_win32->last_key_state = grfKeyState;
+      drop_win32->last_x = x_root;
+      drop_win32->last_y = y_root;
+    }
+
+  *actions = filter_actions (drop_win32->actions, source_actions);
+
+  GDK_NOTE (DND, g_print ("_gdk_win32_local_drop_target_dragover returns with actions %s\n",
+                          _gdk_win32_drag_action_to_string (*actions)));
+}
+
 /* NOTE: This method is called continuously, even if nothing is
 * happening, as long as the drag operation is in progress and
 * the cursor is above our window.
@@ -562,6 +681,18 @@ idroptarget_dragover (LPDROPTARGET This,
  return S_OK;
 }

+void
+_gdk_win32_local_drop_target_dragleave (GdkDrop *drop,
+                                        guint32  time_)
+{
+  GdkWin32Surface *impl = GDK_WIN32_SURFACE (gdk_drop_get_surface (drop));
+  GDK_NOTE (DND, g_print ("_gdk_win32_local_drop_target_dragleave %p\n", drop));
+
+  gdk_drop_emit_leave_event (drop, TRUE, time_);
+
+  g_clear_object (&impl->drop);
+}
+
 static HRESULT STDMETHODCALLTYPE
 idroptarget_dragleave (LPDROPTARGET This)
 {
@@ -577,6 +708,35 @@ idroptarget_dragleave (LPDROPTARGET This)
  return S_OK;
 }

+void
+_gdk_win32_local_drop_target_drop (GdkDrop        *drop,
+                                   GdkDrag        *drag,
+                                   guint32         time_,
+                                   GdkDragAction  *actions)
+{
+  GdkWin32Drop *drop_win32 = GDK_WIN32_DROP (drop);
+
+  GDK_NOTE (DND, g_print ("_gdk_win32_local_drop_target_drop %p ", drop));
+
+  set_source_actions_helper (drop,
+                             *actions,
+                             drop_win32->last_key_state);
+
+  drop_win32->drop_finished = FALSE;
+  gdk_drop_emit_drop_event (drop, TRUE, drop_win32->last_x, drop_win32->last_y, time_);
+
+  while (!drop_win32->drop_finished)
+    g_main_context_iteration (NULL, FALSE);
+
+  /* Notify local source of the DnD result
+   * Special case:
+   * drop_win32->actions is guaranteed to contain 1 action after gdk_drop_finish ()
+   */
+  *actions = drop_win32->actions;
+
+  GDK_NOTE (DND, g_print ("drop with action %s\n", _gdk_win32_drag_action_to_string (*actions)));
+}
+
 static HRESULT STDMETHODCALLTYPE
 idroptarget_drop (LPDROPTARGET This,
                  LPDATAOBJECT pDataObj,
@@ -918,6 +1078,14 @@ gdk_win32_drop_status (GdkDrop       *drop,
                          _gdk_win32_drag_action_to_string (preferred)));

  drop_win32->actions = actions;
+
+  if (drop_win32->protocol == GDK_DRAG_PROTO_OLE2)
+    return;
+
+  drag = gdk_drop_get_drag (drop);
+
+  if (drag != NULL)
+    _gdk_win32_local_drag_give_feedback (drag, actions);
 }

 static void
@@ -933,6 +1101,9 @@ gdk_win32_drop_finish (GdkDrop       *drop,

  drop_win32->actions = action;
  drop_win32->drop_finished = TRUE;
+
+  if (drop_win32->protocol == GDK_DRAG_PROTO_OLE2)
+    return;
 }

 #if 0
@@ -965,7 +1136,6 @@ _gdk_win32_surface_register_dnd (GdkSurface *window)
 {
  drop_target_context *ctx;
  HRESULT hr;
-  GdkWin32Surface *impl;

  g_return_if_fail (window != NULL);

@@ -976,30 +1146,43 @@ _gdk_win32_surface_register_dnd (GdkSurface *window)

  GDK_NOTE (DND, g_print ("gdk_win32_surface_register_dnd: %p\n", GDK_SURFACE_HWND (window)));

-  impl = GDK_WIN32_SURFACE (window);
-
-  /* Return if window is already setup for DND. */
-  if (impl->drop_target != NULL)
-    return;
-
-  ctx = target_context_new (window);
-
-  hr = CoLockObjectExternal ((IUnknown *) &ctx->idt, TRUE, FALSE);
-  if (!SUCCEEDED (hr))
-    OTHER_API_FAILED ("CoLockObjectExternal");
+  if (!use_ole2_dnd)
+    {
+      /* We always claim to accept dropped files, but in fact we might not,
+       * of course. This function is called in such a way that it cannot know
+       * whether the window (widget) in question actually accepts files
+       * (in gtk, data of type text/uri-list) or not.
+       */
+      gdk_win32_display_add_filter (GDK_WIN32_DISPLAY (gdk_display_get_default ()), gdk_dropfiles_filter, NULL);
+      DragAcceptFiles (GDK_SURFACE_HWND (window), TRUE);
+    }
  else
    {
-      hr = RegisterDragDrop (GDK_SURFACE_HWND (window), &ctx->idt);
-      if (hr == DRAGDROP_E_ALREADYREGISTERED)
-        {
-          g_print ("DRAGDROP_E_ALREADYREGISTERED\n");
-          CoLockObjectExternal ((IUnknown *) &ctx->idt, FALSE, FALSE);
-        }
-      else if (!SUCCEEDED (hr))
-        OTHER_API_FAILED ("RegisterDragDrop");
+      GdkWin32Surface *impl = GDK_WIN32_SURFACE (window);
+
+      /* Return if window is already setup for DND. */
+      if (impl->drop_target != NULL)
+        return;
+
+      ctx = target_context_new (window);
+
+      hr = CoLockObjectExternal ((IUnknown *) &ctx->idt, TRUE, FALSE);
+      if (!SUCCEEDED (hr))
+        OTHER_API_FAILED ("CoLockObjectExternal");
      else
        {
-          impl->drop_target = ctx;
+          hr = RegisterDragDrop (GDK_SURFACE_HWND (window), &ctx->idt);
+          if (hr == DRAGDROP_E_ALREADYREGISTERED)
+            {
+              g_print ("DRAGDROP_E_ALREADYREGISTERED\n");
+              CoLockObjectExternal ((IUnknown *) &ctx->idt, FALSE, FALSE);
+            }
+          else if (!SUCCEEDED (hr))
+            OTHER_API_FAILED ("RegisterDragDrop");
+          else
+            {
+              impl->drop_target = ctx;
+            }
        }
    }
 }
@@ -1235,3 +1418,10 @@ gdk_win32_drop_class_init (GdkWin32DropClass *klass)
  drop_class->read_async = gdk_win32_drop_read_async;
  drop_class->read_finish = gdk_win32_drop_read_finish;
 }
+
+void
+_gdk_drop_init (void)
+{
+  if (g_strcmp0 (getenv ("GDK_WIN32_OLE2_DND"), "0") == 0)
+    use_ole2_dnd = FALSE;
+}
@@ -55,9 +55,7 @@
 #include "gdkdevicemanager-win32.h"
 #include "gdkdisplay-win32.h"
 #include "gdkdeviceprivate.h"
-#include "gdkdevice-virtual.h"
 #include "gdkdevice-wintab.h"
-#include "gdkinput-winpointer.h"
 #include "gdkwin32dnd.h"
 #include "gdkwin32dnd-private.h"
 #include "gdkdisplay-win32.h"
@@ -73,9 +71,8 @@
 #endif

 #include <objbase.h>
+
 #include <imm.h>
-#include <tchar.h>
-#include <tpcshrd.h>

 #define GDK_MOD2_MASK (1 << 4)

@@ -166,10 +163,6 @@ static int both_shift_pressed[2]; /* to store keycodes for shift keys */
 static HHOOK keyboard_hook = NULL;
 static UINT aerosnap_message;

-static gboolean pen_touch_input;
-static POINT pen_touch_cursor_position;
-static LONG last_digitizer_time;
-
 static void
 track_mouse_event (DWORD dwFlags,
 		   HWND  hwnd)
@@ -204,18 +197,6 @@ _gdk_win32_get_next_tick (gulong suggested_tick)
    return cur_tick = suggested_tick;
 }

-BOOL
-_gdk_win32_get_cursor_pos (LPPOINT lpPoint)
-{
-  if (pen_touch_input)
-    {
-      *lpPoint = pen_touch_cursor_position;
-      return TRUE;
-    }
-  else
-    return GetCursorPos (lpPoint);
-}
-
 static void
 generate_focus_event (GdkDeviceManagerWin32 *device_manager,
                      GdkSurface        *window,
@@ -1055,12 +1036,11 @@ do_show_window (GdkSurface *window, gboolean hide_window)

 static void
 send_crossing_event (GdkDisplay                 *display,
-                     GdkDevice                  *physical_device,
-		     GdkSurface                 *window,
+		     GdkSurface                  *window,
 		     GdkEventType                type,
 		     GdkCrossingMode             mode,
 		     GdkNotifyType               notify_type,
-		     GdkSurface                 *subwindow,
+		     GdkSurface                  *subwindow,
 		     POINT                      *screen_pt,
 		     GdkModifierType             mask,
 		     guint32                     time_)
@@ -1087,18 +1067,16 @@ send_crossing_event (GdkDisplay                 *display,
  pt = *screen_pt;
  ScreenToClient (GDK_SURFACE_HWND (window), &pt);

-  _gdk_device_virtual_set_active (_gdk_device_manager->core_pointer, physical_device);
-
  event = gdk_crossing_event_new (type,
                                  window,
                                  device_manager->core_pointer,
-                                  time_,
+                                  _gdk_win32_get_next_tick (time_),
                                  mask,
                                  pt.x / impl->surface_scale,
                                  pt.y / impl->surface_scale,
                                  mode,
                                  notify_type);
-
+          
  _gdk_win32_append_event (event);
 }

@@ -1141,9 +1119,8 @@ find_common_ancestor (GdkSurface *win1,

 void
 synthesize_crossing_events (GdkDisplay                 *display,
-                            GdkDevice                  *physical_device,
-			    GdkSurface                 *src,
-			    GdkSurface                 *dest,
+			    GdkSurface                  *src,
+			    GdkSurface                  *dest,
 			    GdkCrossingMode             mode,
 			    POINT                      *screen_pt,
 			    GdkModifierType             mask,
@@ -1176,7 +1153,6 @@ synthesize_crossing_events (GdkDisplay                 *display,
      else
 	notify_type = GDK_NOTIFY_ANCESTOR;
      send_crossing_event (display,
-                           physical_device,
 			   a, GDK_LEAVE_NOTIFY,
 			   mode,
 			   notify_type,
@@ -1196,7 +1172,6 @@ synthesize_crossing_events (GdkDisplay                 *display,
 	  while (win != c && win != NULL)
 	    {
 	      send_crossing_event (display,
-                                   physical_device,
 				   win, GDK_LEAVE_NOTIFY,
 				   mode,
 				   notify_type,
@@ -1239,7 +1214,6 @@ synthesize_crossing_events (GdkDisplay                 *display,
 		next = b;

 	      send_crossing_event (display,
-                                   physical_device,
 				   win, GDK_ENTER_NOTIFY,
 				   mode,
 				   notify_type,
@@ -1259,7 +1233,6 @@ synthesize_crossing_events (GdkDisplay                 *display,
 	notify_type = GDK_NOTIFY_INFERIOR;

      send_crossing_event (display,
-                           physical_device,
 			   b, GDK_ENTER_NOTIFY,
 			   mode,
 			   notify_type,
@@ -1269,26 +1242,6 @@ synthesize_crossing_events (GdkDisplay                 *display,
    }
 }

-static void
-make_crossing_event (GdkDevice *physical_device,
-                     GdkSurface *surface,
-                     POINT *screen_pt,
-                     guint32 time_)
-{
-  GDK_NOTE (EVENTS, g_print (" mouse_window %p -> %p",
-                             mouse_window ? GDK_SURFACE_HWND (mouse_window) : NULL,
-                             surface ? GDK_SURFACE_HWND (surface) : NULL));
-  synthesize_crossing_events (_gdk_display,
-                              physical_device,
-                              mouse_window, surface,
-                              GDK_CROSSING_NORMAL,
-                              screen_pt,
-                              0, /* TODO: Set right mask */
-                              time_,
-                              FALSE);
-  g_set_object (&mouse_window, surface);
-}
-
 /* Acquires actual client area size of the underlying native window.
 * Rectangle is in GDK screen coordinates (_gdk_offset_* is added).
 * Returns FALSE if configure events should be inhibited,
@@ -1573,9 +1526,6 @@ generate_button_event (GdkEventType      type,
  current_x = (gint16) GET_X_LPARAM (msg->lParam) / impl->surface_scale;
  current_y = (gint16) GET_Y_LPARAM (msg->lParam) / impl->surface_scale;

-  _gdk_device_virtual_set_active (_gdk_device_manager->core_pointer,
-                                  _gdk_device_manager->system_pointer);
-
  event = gdk_button_event_new (type,
                                window,
                                device_manager->core_pointer,
@@ -1807,8 +1757,6 @@ gdk_event_translate (MSG *msg,
  GdkDeviceGrabInfo *pointer_grab = NULL;
  GdkSurface *grab_window = NULL;

-  crossing_cb_t crossing_cb = NULL;
-
  int button;

  char buf[256];
@@ -2231,8 +2179,6 @@ gdk_event_translate (MSG *msg,
 		g_print (" (%d,%d)",
 			 GET_X_LPARAM (msg->lParam), GET_Y_LPARAM (msg->lParam)));

-      pen_touch_input = FALSE;
-
      g_set_object (&window, find_window_for_mouse_event (window, msg));
      /* TODO_CSW?: there used to some synthesize and propagate */
      if (GDK_SURFACE_DESTROYED (window))
@@ -2275,8 +2221,6 @@ gdk_event_translate (MSG *msg,
 		g_print (" (%d,%d)",
 			 GET_X_LPARAM (msg->lParam), GET_Y_LPARAM (msg->lParam)));

-      pen_touch_input = FALSE;
-
      g_set_object (&window, find_window_for_mouse_event (window, msg));

      if (pointer_grab == NULL && implicit_grab_surface != NULL)
@@ -2301,12 +2245,11 @@ gdk_event_translate (MSG *msg,
 		}

 	      synthesize_crossing_events (display,
-                                          _gdk_device_manager->system_pointer,
 					  implicit_grab_surface, new_window,
 					  GDK_CROSSING_UNGRAB,
 					  &msg->pt,
 					  0, /* TODO: Set right mask */
-					  _gdk_win32_get_next_tick (msg->time),
+					  msg->time,
 					  FALSE);
 	      g_set_object (&implicit_grab_surface, NULL);
 	      g_set_object (&mouse_window, new_window);
@@ -2335,23 +2278,6 @@ gdk_event_translate (MSG *msg,
 			 (gpointer) msg->wParam,
 			 GET_X_LPARAM (msg->lParam), GET_Y_LPARAM (msg->lParam)));

-      /* Even if we handle WM_POINTER messages, synthetic WM_MOUSEMOVE messages
-       * are still sent occasionally by the OS, e.g. when a surface is hidden
-       * or shown. Discard spurious WM_MOUSEMOVE messages while handling pen or
-       * touch input
-       *
-       * See the article
-       * "Why do I get spurious WM_MOUSEMOVE messages?" by Raymond Chen:
-       * https://devblogs.microsoft.com/oldnewthing/20031001-00/?p=42343
-       *
-       */
-      if (win32_display->tablet_input_api == GDK_WIN32_TABLET_INPUT_API_WINPOINTER &&
-          ( (msg->time - last_digitizer_time) < 200 ||
-           -(msg->time - last_digitizer_time) < 200 ))
-        break;
-
-      pen_touch_input = FALSE;
-
      new_window = window;

      if (pointer_grab != NULL)
@@ -2379,16 +2305,15 @@ gdk_event_translate (MSG *msg,

      if (mouse_window != new_window)
 	{
-	  GDK_NOTE (EVENTS, g_print (" mouse_window %p -> %p",
+	  GDK_NOTE (EVENTS, g_print (" mouse_sinwod %p -> %p",
 				     mouse_window ? GDK_SURFACE_HWND (mouse_window) : NULL,
 				     new_window ? GDK_SURFACE_HWND (new_window) : NULL));
 	  synthesize_crossing_events (display,
-                                      _gdk_device_manager->system_pointer,
 				      mouse_window, new_window,
 				      GDK_CROSSING_NORMAL,
 				      &msg->pt,
 				      0, /* TODO: Set right mask */
-				      _gdk_win32_get_next_tick (msg->time),
+				      msg->time,
 				      FALSE);
 	  g_set_object (&mouse_window, new_window);
 	  mouse_window_ignored_leave = NULL;
@@ -2426,9 +2351,6 @@ gdk_event_translate (MSG *msg,
 	  current_x = (gint16) GET_X_LPARAM (msg->lParam) / impl->surface_scale;
 	  current_y = (gint16) GET_Y_LPARAM (msg->lParam) / impl->surface_scale;

-          _gdk_device_virtual_set_active (_gdk_device_manager->core_pointer,
-                                          _gdk_device_manager->system_pointer);
-
 	  event = gdk_motion_event_new (window,
 	                                device_manager_win32->core_pointer,
                                        NULL,
@@ -2454,8 +2376,6 @@ gdk_event_translate (MSG *msg,
      GDK_NOTE (EVENTS, g_print (" %d (%ld,%ld)",
 				 HIWORD (msg->wParam), msg->pt.x, msg->pt.y));

-      pen_touch_input = FALSE;
-
      new_window = NULL;
      hwnd = WindowFromPoint (msg->pt);
      ignore_leave = FALSE;
@@ -2481,12 +2401,11 @@ gdk_event_translate (MSG *msg,

      if (!ignore_leave)
 	synthesize_crossing_events (display,
-                                    _gdk_device_manager->system_pointer,
 				    mouse_window, new_window,
 				    GDK_CROSSING_NORMAL,
 				    &msg->pt,
 				    0, /* TODO: Set right mask */
-				    _gdk_win32_get_next_tick (msg->time),
+				    msg->time,
 				    FALSE);
      g_set_object (&mouse_window, new_window);
      mouse_window_ignored_leave = ignore_leave ? new_window : NULL;
@@ -2495,213 +2414,6 @@ gdk_event_translate (MSG *msg,
      return_val = TRUE;
      break;

-    case WM_POINTERDOWN:
-      if (win32_display->tablet_input_api != GDK_WIN32_TABLET_INPUT_API_WINPOINTER ||
-          gdk_winpointer_should_forward_message (msg))
-        {
-          return_val = FALSE;
-          break;
-        }
-
-      if (IS_POINTER_PRIMARY_WPARAM (msg->wParam))
-        {
-          current_root_x = pen_touch_cursor_position.x = GET_X_LPARAM (msg->lParam);
-          current_root_y = pen_touch_cursor_position.y = GET_Y_LPARAM (msg->lParam);
-          pen_touch_input = TRUE;
-          last_digitizer_time = msg->time;
-        }
-
-      if (pointer_grab != NULL &&
-          !pointer_grab->implicit &&
-          !pointer_grab->owner_events)
-        g_set_object (&window, pointer_grab->surface);
-
-      if (IS_POINTER_PRIMARY_WPARAM (msg->wParam) && mouse_window != window)
-        crossing_cb = make_crossing_event;
-
-      gdk_winpointer_input_events (window, crossing_cb, msg);
-
-      *ret_valp = 0;
-      return_val = TRUE;
-      break;
-
-    case WM_POINTERUP:
-      if (win32_display->tablet_input_api != GDK_WIN32_TABLET_INPUT_API_WINPOINTER ||
-          gdk_winpointer_should_forward_message (msg))
-        {
-          return_val = FALSE;
-          break;
-        }
-
-      if (IS_POINTER_PRIMARY_WPARAM (msg->wParam))
-        {
-          current_root_x = pen_touch_cursor_position.x = GET_X_LPARAM (msg->lParam);
-          current_root_y = pen_touch_cursor_position.y = GET_Y_LPARAM (msg->lParam);
-          pen_touch_input = TRUE;
-          last_digitizer_time = msg->time;
-        }
-
-      if (pointer_grab != NULL &&
-          !pointer_grab->implicit &&
-          !pointer_grab->owner_events)
-        g_set_object (&window, pointer_grab->surface);
-
-      gdk_winpointer_input_events (window, NULL, msg);
-
-      impl = GDK_WIN32_SURFACE (window);
-      if (impl->drag_move_resize_context.op != GDK_WIN32_DRAGOP_NONE)
-        {
-          gdk_win32_surface_end_move_resize_drag (window);
-        }
-
-      *ret_valp = 0;
-      return_val = TRUE;
-      break;
-
-    case WM_POINTERUPDATE:
-      if (win32_display->tablet_input_api != GDK_WIN32_TABLET_INPUT_API_WINPOINTER ||
-          gdk_winpointer_should_forward_message (msg))
-        {
-          return_val = FALSE;
-          break;
-        }
-
-      if (IS_POINTER_PRIMARY_WPARAM (msg->wParam))
-        {
-          current_root_x = pen_touch_cursor_position.x = GET_X_LPARAM (msg->lParam);
-          current_root_y = pen_touch_cursor_position.y = GET_Y_LPARAM (msg->lParam);
-          pen_touch_input = TRUE;
-          last_digitizer_time = msg->time;
-        }
-
-      if (pointer_grab != NULL &&
-          !pointer_grab->implicit &&
-          !pointer_grab->owner_events)
-        g_set_object (&window, pointer_grab->surface);
-
-      if (IS_POINTER_PRIMARY_WPARAM (msg->wParam) && mouse_window != window)
-        crossing_cb = make_crossing_event;
-
-      impl = GDK_WIN32_SURFACE (window);
-
-      if (impl->drag_move_resize_context.op != GDK_WIN32_DRAGOP_NONE)
-        {
-          gdk_win32_surface_do_move_resize_drag (window, current_root_x, current_root_y);
-        }
-      else
-        {
-          gdk_winpointer_input_events (window, crossing_cb, msg);
-        }
-
-      *ret_valp = 0;
-      return_val = TRUE;
-      break;
-
-    case WM_NCPOINTERUPDATE:
-      if (win32_display->tablet_input_api != GDK_WIN32_TABLET_INPUT_API_WINPOINTER ||
-          gdk_winpointer_should_forward_message (msg))
-        {
-          return_val = FALSE;
-          break;
-        }
-
-      if (IS_POINTER_PRIMARY_WPARAM (msg->wParam))
-        {
-          current_root_x = pen_touch_cursor_position.x = GET_X_LPARAM (msg->lParam);
-          current_root_y = pen_touch_cursor_position.y = GET_Y_LPARAM (msg->lParam);
-          pen_touch_input = TRUE;
-          last_digitizer_time = msg->time;
-        }
-
-      if (IS_POINTER_PRIMARY_WPARAM (msg->wParam) &&
-          !IS_POINTER_INCONTACT_WPARAM (msg->wParam) &&
-          mouse_window != NULL)
-        {
-          GdkDevice *event_device = NULL;
-          guint32 event_time = 0;
-
-          if (gdk_winpointer_get_message_info (msg, &event_device, &event_time))
-            {
-              make_crossing_event(event_device,
-                                  NULL,
-                                  &pen_touch_cursor_position,
-                                  event_time);
-            }
-        }
-
-      return_val = FALSE; /* forward to DefWindowProc */
-      break;
-
-    case WM_POINTERENTER:
-      if (win32_display->tablet_input_api != GDK_WIN32_TABLET_INPUT_API_WINPOINTER ||
-          gdk_winpointer_should_forward_message (msg))
-        {
-          return_val = FALSE;
-          break;
-        }
-
-      if (IS_POINTER_PRIMARY_WPARAM (msg->wParam))
-        {
-          current_root_x = pen_touch_cursor_position.x = GET_X_LPARAM (msg->lParam);
-          current_root_y = pen_touch_cursor_position.y = GET_Y_LPARAM (msg->lParam);
-          pen_touch_input = TRUE;
-          last_digitizer_time = msg->time;
-        }
-
-      if (pointer_grab != NULL &&
-          !pointer_grab->implicit &&
-          !pointer_grab->owner_events)
-        g_set_object (&window, pointer_grab->surface);
-
-      if (IS_POINTER_NEW_WPARAM (msg->wParam))
-        {
-          gdk_winpointer_input_events (window, NULL, msg);
-        }
-
-      *ret_valp = 0;
-      return_val = TRUE;
-      break;
-
-    case WM_POINTERLEAVE:
-      if (win32_display->tablet_input_api != GDK_WIN32_TABLET_INPUT_API_WINPOINTER ||
-          gdk_winpointer_should_forward_message (msg))
-        {
-          return_val = FALSE;
-          break;
-        }
-
-      if (IS_POINTER_PRIMARY_WPARAM (msg->wParam))
-        {
-          current_root_x = pen_touch_cursor_position.x = GET_X_LPARAM (msg->lParam);
-          current_root_y = pen_touch_cursor_position.y = GET_Y_LPARAM (msg->lParam);
-          pen_touch_input = TRUE;
-          last_digitizer_time = msg->time;
-        }
-
-      if (!IS_POINTER_INRANGE_WPARAM (msg->wParam))
-        {
-          gdk_winpointer_input_events (window, NULL, msg);
-        }
-      else if (IS_POINTER_PRIMARY_WPARAM (msg->wParam) && mouse_window != NULL)
-        {
-          GdkDevice *event_device = NULL;
-          guint32 event_time = 0;
-
-          if (gdk_winpointer_get_message_info (msg, &event_device, &event_time))
-            {
-              make_crossing_event(event_device,
-                                  NULL,
-                                  &pen_touch_cursor_position,
-                                  event_time);
-            }
-        }
-
-      gdk_winpointer_interaction_ended (msg);
-
-      *ret_valp = 0;
-      return_val = TRUE;
-      break;
-
    case WM_MOUSEWHEEL:
    case WM_MOUSEHWHEEL:
      GDK_NOTE (EVENTS, g_print (" %d", (short) HIWORD (msg->wParam)));
@@ -2764,9 +2476,6 @@ gdk_event_translate (MSG *msg,
       */
      delta_y *= -1.0;

-      _gdk_device_virtual_set_active (_gdk_device_manager->core_pointer,
-                                      _gdk_device_manager->system_pointer);
-
      event = gdk_scroll_event_new (window,
                                    device_manager_win32->core_pointer,
                                    NULL,
@@ -2800,6 +2509,44 @@ gdk_event_translate (MSG *msg,
      return_val = TRUE;
      break;

+    case WM_HSCROLL:
+      /* Just print more debugging information, don't actually handle it. */
+      GDK_NOTE (EVENTS,
+		(g_print (" %s",
+			  (LOWORD (msg->wParam) == SB_ENDSCROLL ? "ENDSCROLL" :
+			   (LOWORD (msg->wParam) == SB_LEFT ? "LEFT" :
+			    (LOWORD (msg->wParam) == SB_RIGHT ? "RIGHT" :
+			     (LOWORD (msg->wParam) == SB_LINELEFT ? "LINELEFT" :
+			      (LOWORD (msg->wParam) == SB_LINERIGHT ? "LINERIGHT" :
+			       (LOWORD (msg->wParam) == SB_PAGELEFT ? "PAGELEFT" :
+				(LOWORD (msg->wParam) == SB_PAGERIGHT ? "PAGERIGHT" :
+				 (LOWORD (msg->wParam) == SB_THUMBPOSITION ? "THUMBPOSITION" :
+				  (LOWORD (msg->wParam) == SB_THUMBTRACK ? "THUMBTRACK" :
+				   "???")))))))))),
+		 (LOWORD (msg->wParam) == SB_THUMBPOSITION ||
+		  LOWORD (msg->wParam) == SB_THUMBTRACK) ?
+		 (g_print (" %d", HIWORD (msg->wParam)), 0) : 0));
+      break;
+
+    case WM_VSCROLL:
+      /* Just print more debugging information, don't actually handle it. */
+      GDK_NOTE (EVENTS,
+		(g_print (" %s",
+			  (LOWORD (msg->wParam) == SB_ENDSCROLL ? "ENDSCROLL" :
+			   (LOWORD (msg->wParam) == SB_BOTTOM ? "BOTTOM" :
+			    (LOWORD (msg->wParam) == SB_TOP ? "TOP" :
+			     (LOWORD (msg->wParam) == SB_LINEDOWN ? "LINDOWN" :
+			      (LOWORD (msg->wParam) == SB_LINEUP ? "LINEUP" :
+			       (LOWORD (msg->wParam) == SB_PAGEDOWN ? "PAGEDOWN" :
+				(LOWORD (msg->wParam) == SB_PAGEUP ? "PAGEUP" :
+				 (LOWORD (msg->wParam) == SB_THUMBPOSITION ? "THUMBPOSITION" :
+				  (LOWORD (msg->wParam) == SB_THUMBTRACK ? "THUMBTRACK" :
+				   "???")))))))))),
+		 (LOWORD (msg->wParam) == SB_THUMBPOSITION ||
+		  LOWORD (msg->wParam) == SB_THUMBTRACK) ?
+		 (g_print (" %d", HIWORD (msg->wParam)), 0) : 0));
+      break;
+
     case WM_MOUSEACTIVATE:
       {
 	 if (GDK_IS_DRAG_SURFACE (window))
@@ -2817,16 +2564,6 @@ gdk_event_translate (MSG *msg,

       break;

-    case WM_POINTERACTIVATE:
-      if (GDK_IS_DRAG_SURFACE (window) ||
-          _gdk_modal_blocked (window))
-        {
-          *ret_valp = PA_NOACTIVATE;
-          return_val = TRUE;
-        }
-
-      break;
-
    case WM_KILLFOCUS:
      if (keyboard_grab != NULL &&
 	  !GDK_SURFACE_DESTROYED (keyboard_grab->surface) &&
@@ -3218,13 +2955,6 @@ gdk_event_translate (MSG *msg,
      *ret_valp = 0;
      break;

-    case WM_DESTROY:
-      if (win32_display->tablet_input_api == GDK_WIN32_TABLET_INPUT_API_WINPOINTER)
-        gdk_winpointer_finalize_surface (window);
-
-      return_val = FALSE;
-      break;
-
    case WM_NCDESTROY:
      if ((pointer_grab != NULL && pointer_grab->surface == window) ||
          (keyboard_grab && keyboard_grab->surface == window))
@@ -3305,15 +3035,12 @@ gdk_event_translate (MSG *msg,
        {
          gdk_synthesize_surface_state (window, 0, GDK_TOPLEVEL_STATE_FOCUSED);

-          if (win32_display->tablet_input_api == GDK_WIN32_TABLET_INPUT_API_WINTAB)
-            {
-              /* Bring any tablet contexts to the top of the overlap order when
-               * one of our windows is activated.
-               * NOTE: It doesn't seem to work well if it is done in WM_ACTIVATEAPP
-               * instead
-               */
-              _gdk_wintab_set_tablet_active ();
-           }
+          /* Bring any tablet contexts to the top of the overlap order when
+           * one of our windows is activated.
+           * NOTE: It doesn't seem to work well if it is done in WM_ACTIVATEAPP
+           * instead
+           */
+          _gdk_input_set_tablet_active ();
        }

      break;
@@ -3330,16 +3057,6 @@ gdk_event_translate (MSG *msg,
                                     GET_Y_LPARAM (msg->lParam), ret_valp);
      break;

-    case WM_TABLET_QUERYSYSTEMGESTURESTATUS:
-      *ret_valp = TABLET_DISABLE_PRESSANDHOLD |
-                  TABLET_DISABLE_PENTAPFEEDBACK |
-                  TABLET_DISABLE_PENBARRELFEEDBACK |
-                  TABLET_DISABLE_FLICKS |
-                  TABLET_DISABLE_FLICKFALLBACKKEYS;
-      return_val = TRUE;
-      break;
-
-
      /* Handle WINTAB events here, as we know that the device manager will
       * use the fixed WT_DEFBASE as lcMsgBase, and we thus can use the
       * constants as case labels.
@@ -3362,14 +3079,11 @@ gdk_event_translate (MSG *msg,
      /* Fall through */
    wintab:

-      if (win32_display->tablet_input_api == GDK_WIN32_TABLET_INPUT_API_WINTAB)
+      event = gdk_input_other_event (display, msg, window);
+      if (event)
        {
-          event = gdk_wintab_make_event (display, msg, window);
-          if (event)
-            {
-              _gdk_win32_append_event (event);
-               gdk_event_unref (event);
-            }
+          _gdk_win32_append_event (event);
+	  gdk_event_unref (event);
        }

      break;
@@ -277,7 +277,7 @@ gdk_win32_display_init_egl (GdkDisplay  *display,
  display_win32->egl_disp = egl_disp;
  display_win32->egl_version = epoxy_egl_version (egl_disp);

-  eglBindAPI (EGL_OPENGL_ES_API);
+  eglBindAPI(EGL_OPENGL_ES_API);

  display_win32->hasEglSurfacelessContext =
    epoxy_has_egl_extension (egl_disp, "EGL_KHR_surfaceless_context");
@@ -278,9 +278,6 @@ gdk_win32_display_init_wgl (GdkDisplay  *display,
  if (best_idx == 0 ||
     !wglMakeCurrent (hdc, display_win32->dummy_context_wgl.hglrc))
    {
-      if (display_win32->dummy_context_wgl.hglrc != NULL)
-        wglDeleteContext (display_win32->dummy_context_wgl.hglrc);
-
      g_set_error_literal (error, GDK_GL_ERROR,
                           GDK_GL_ERROR_NOT_AVAILABLE,
                           _("No GL implementation is available"));
@@ -291,22 +288,6 @@ gdk_win32_display_init_wgl (GdkDisplay  *display,
  display_win32->wgl_pixel_format = best_idx;
  display_win32->gl_version = epoxy_gl_version ();

-  /* We must have OpenGL/WGL 2.0 or later, or have the GL_ARB_shader_objects extension */
-  if (display_win32->gl_version < 20)
-    {
-      if (!epoxy_has_gl_extension ("GL_ARB_shader_objects"))
-        {
-          wglMakeCurrent (NULL, NULL);
-          wglDeleteContext (display_win32->dummy_context_wgl.hglrc);
-
-          g_set_error_literal (error, GDK_GL_ERROR,
-                               GDK_GL_ERROR_NOT_AVAILABLE,
-                               _("No GL implementation is available"));
-
-          return FALSE;
-        }
-    }
-
  display_win32->hasWglARBCreateContext =
    epoxy_has_wgl_extension (hdc, "WGL_ARB_create_context");
  display_win32->hasWglEXTSwapControl =
@@ -42,6 +42,9 @@ HKL		  _gdk_input_locale;
 gboolean	  _gdk_input_locale_is_ime = FALSE;
 UINT		  _gdk_input_codepage;

+int		  _gdk_input_ignore_wintab = FALSE;
+int		  _gdk_max_colors = 0;
+
 GdkWin32ModalOpKind	  _modal_operation_in_progress = GDK_WIN32_MODAL_OP_NONE;
 HWND              _modal_move_resize_window = NULL;

@@ -1,43 +0,0 @@
-/* GDK - The GIMP Drawing Kit
- * Copyright (C) 2021 the GTK team
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef __GDK_INPUT_WINPOINTER_H__
-#define __GDK_INPUT_WINPOINTER_H__
-
-#include "winpointer.h"
-
-gboolean gdk_winpointer_initialize (void);
-
-void gdk_winpointer_initialize_surface (GdkSurface *surface);
-void gdk_winpointer_finalize_surface (GdkSurface *surface);
-
-typedef void
-(*crossing_cb_t)(GdkDevice *physical_device,
-                 GdkSurface *surface,
-                 POINT *screen_pt,
-                 guint32 time_);
-
-gboolean gdk_winpointer_should_forward_message (MSG *msg);
-void     gdk_winpointer_input_events (GdkSurface *surface,
-                                      crossing_cb_t crossing_cb,
-                                      MSG *msg);
-gboolean gdk_winpointer_get_message_info (MSG *msg,
-                                          GdkDevice **device,
-                                          guint32 *time_);
-void     gdk_winpointer_interaction_ended (MSG *msg);
-
-#endif /* __GDK_INPUT_WINPOINTER_H__ */
@@ -54,6 +54,11 @@ _gdk_win32_surfaceing_init (void)
 {
  char buf[10];

+  if (getenv ("GDK_IGNORE_WINTAB") != NULL)
+    _gdk_input_ignore_wintab = TRUE;
+  else if (getenv ("GDK_USE_WINTAB") != NULL)
+    _gdk_input_ignore_wintab = FALSE;
+
  if (gdk_synchronize)
    GdiSetBatchLimit (1);

@@ -248,6 +253,7 @@ _gdk_win32_drag_protocol_to_string (GdkDragProtocol protocol)
      CASE (NONE);
      CASE (WIN32_DROPFILES);
      CASE (OLE2);
+      CASE (LOCAL);
 #undef CASE
    default: return static_printf ("illegal_%d", protocol);
    }
@@ -15,6 +15,22 @@
 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
 */

+#if defined (_WIN32_WINNT) && WIN32_WINNT < 0x0601
+#  undef _WIN32_WINNT
+
+#  define _WIN32_WINNT 0x0601
+#  ifdef WINVER
+#    undef WINVER
+#  endif
+#  define WINVER _WIN32_WINNT
+#elif !defined (_WIN32_WINNT)
+#  define _WIN32_WINNT 0x0601
+#  ifdef WINVER
+#    undef WINVER
+#  endif
+#  define WINVER _WIN32_WINNT
+#endif
+
 #include "config.h"

 #include "gdkprivate-win32.h"
@@ -25,6 +25,15 @@
 #ifndef __GDK_PRIVATE_WIN32_H__
 #define __GDK_PRIVATE_WIN32_H__

+#ifndef WINVER
+/* Vista or newer */
+#define WINVER 0x0600
+#endif
+
+#ifndef _WIN32_WINNT
+#define _WIN32_WINNT WINVER
+#endif
+
 #include <gdk/gdkcursorprivate.h>
 #include <gdk/win32/gdksurface-win32.h>
 #include <gdk/win32/gdkwin32display.h>
@@ -145,14 +154,13 @@ typedef enum
  GDK_DRAG_PROTO_NONE = 0,
  GDK_DRAG_PROTO_WIN32_DROPFILES,
  GDK_DRAG_PROTO_OLE2,
+  GDK_DRAG_PROTO_LOCAL,
 } GdkDragProtocol;

 GType _gdk_gc_win32_get_type (void);

 gulong _gdk_win32_get_next_tick (gulong suggested_tick);

-BOOL _gdk_win32_get_cursor_pos (LPPOINT lpPoint);
-
 void _gdk_surface_init_position     (GdkSurface *window);
 void _gdk_surface_move_resize_child (GdkSurface *window,
                                     int        x,
@@ -242,8 +250,6 @@ void    _gdk_other_api_failed        (const char *where,
 #define WIN32_GDI_FAILED(api) WIN32_API_FAILED (api)
 #define OTHER_API_FAILED(api) _gdk_other_api_failed (G_STRLOC, api)

-#define WIN32_API_FAILED_LOG_ONCE(api) G_STMT_START { static gboolean logged = 0; if (!logged) { _gdk_win32_api_failed (G_STRLOC , api); logged = 1; }} G_STMT_END
-
 /* These two macros call a GDI or other Win32 API and if the return
 * value is zero or NULL, print a warning message. The majority of GDI
 * calls return zero or NULL on failure. The value of the macros is nonzero
@@ -307,6 +313,11 @@ extern HWND             _modal_move_resize_window;
 void  _gdk_win32_begin_modal_call (GdkWin32ModalOpKind kind);
 void  _gdk_win32_end_modal_call (GdkWin32ModalOpKind kind);

+
+/* Options */
+extern gboolean          _gdk_input_ignore_wintab;
+extern int               _gdk_max_colors;
+
 /* Convert a pixbuf to an HICON (or HCURSOR).  Supports alpha under
 * Windows XP, thresholds alpha otherwise.
 */
@@ -431,6 +442,7 @@ BOOL WINAPI GtkShowWindow (GdkSurface *window,
 /* Initialization */
 void _gdk_win32_surfaceing_init (void);
 void _gdk_drag_init    (void);
+void _gdk_drop_init    (void);
 void _gdk_events_init (GdkDisplay *display);

 #endif /* __GDK_PRIVATE_WIN32_H__ */
@@ -17,6 +17,8 @@

 #include "config.h"

+#define _WIN32_WINNT 0x0600
+
 #include "gdk.h"
 #include "gdkprivate-win32.h"
 #include "gdkwin32screen.h"
@@ -43,7 +43,6 @@
 #include "gdkmonitorprivate.h"
 #include "gdkwin32surface.h"
 #include "gdkwin32cursor.h"
-#include "gdkinput-winpointer.h"
 #include "gdkglcontext-win32.h"
 #include "gdkdisplay-win32.h"
 #include "gdkdevice-win32.h"
@@ -205,6 +204,7 @@ gdk_surface_win32_finalize (GObject *object)
    }

  _gdk_win32_surface_unregister_dnd (GDK_SURFACE (surface));
+  g_clear_object (&surface->drop);

  g_assert (surface->transient_owner == NULL);
  g_assert (surface->transient_children == NULL);
@@ -646,9 +646,6 @@ _gdk_win32_display_create_surface (GdkDisplay     *display,
      return NULL;
    }

-  if (display_win32->tablet_input_api == GDK_WIN32_TABLET_INPUT_API_WINPOINTER)
-    gdk_winpointer_initialize_surface (surface);
-
  _gdk_win32_surface_enable_transparency (surface);
  _gdk_win32_surface_register_dnd (surface);

@@ -251,6 +251,10 @@ struct _GdkWin32Surface
   * For OLE2 protocol only.
   */
  drop_target_context *drop_target;
+  /* Temporarily holds the GdkDrop currently associated with this window.
+   * For LOCAL protocol only.
+   */
+  GdkDrop             *drop;

  GdkSurface *transient_owner;
  GSList    *transient_children;
@@ -93,6 +93,38 @@ struct _GdkWin32DragClass
 gpointer _gdk_win32_dnd_thread_main                      (gpointer         data);

 GdkDrag *_gdk_win32_find_drag_for_dest_window     (HWND             dest_window);
+GdkDrop  *_gdk_win32_get_drop_for_dest_surface     (GdkSurface      *dest);
+
+gboolean _gdk_win32_local_drop_target_will_emit_motion   (GdkDrop *drop,
+                                                          int      x_root,
+                                                          int      y_root,
+                                                          DWORD    grfKeyState);
+
+void     _gdk_win32_local_drop_target_dragenter          (GdkDrag        *drag,
+                                                          GdkSurface     *dest_surface,
+                                                          int             x_root,
+                                                          int             y_root,
+                                                          DWORD           grfKeyState,
+                                                          guint32         time_,
+                                                          GdkDragAction  *actions);
+void     _gdk_win32_local_drop_target_dragover           (GdkDrop        *drop,
+                                                          GdkDrag        *drag,
+                                                          int             x_root,
+                                                          int             y_root,
+                                                          DWORD           grfKeyState,
+                                                          guint32         time_,
+                                                          GdkDragAction  *actions);
+void     _gdk_win32_local_drop_target_dragleave          (GdkDrop        *drop,
+                                                          guint32         time_);
+void     _gdk_win32_local_drop_target_drop               (GdkDrop        *drop,
+                                                          GdkDrag        *drag,
+                                                          guint32         time_,
+                                                          GdkDragAction  *actions);
+
+void     _gdk_win32_local_drag_give_feedback             (GdkDrag        *drag,
+                                                          GdkDragAction   actions);
+void     _gdk_win32_local_drag_drop_response             (GdkDrag        *drag,
+                                                          GdkDragAction   action);


 G_END_DECLS
@@ -6,7 +6,6 @@ gdk_win32_sources = files([
  'gdkdevicemanager-win32.c',
  'gdkdevice-virtual.c',
  'gdkdevice-win32.c',
-  'gdkdevice-winpointer.c',
  'gdkdevice-wintab.c',
  'gdkdisplay-win32.c',
  'gdkdisplaymanager-win32.c',
@@ -17,7 +16,6 @@ gdk_win32_sources = files([
  'gdkglcontext-win32-wgl.c',
  'gdkglobals-win32.c',
  'gdkhdataoutputstream-win32.c',
-  'gdkinput-winpointer.c',
  'gdkkeys-win32.c',
  'gdkwin32langnotification.c',
  'gdkmain-win32.c',
@@ -53,9 +51,8 @@ if win32_has_egl
  gdk_win32_sources += ['gdkglcontext-win32-egl.c']
 endif

-gdk_win32_deps = [
-  pangowin32_dep, # FIXME
-  cc.find_library('hid'),
+gdk_win32_deps = [ # FIXME
+  pangowin32_dep
 ]

 libgdk_win32 = static_library('gdk-win32',
@@ -65,8 +62,6 @@ libgdk_win32 = static_library('gdk-win32',
    '-DGTK_COMPILATION',
    '-DG_LOG_DOMAIN="Gdk"',
    '-DINSIDE_GDK_WIN32',
-    '-D_WIN32_WINNT=0x0601',
-    '-DWINVER=0x0601',
  ] + GDK_WIN32_EGL_CFLAGS,
  dependencies: [ gdk_deps, gdk_win32_deps ],
 )
@@ -1,320 +0,0 @@
-/* GDK - The GIMP Drawing Kit
- * Copyright (C) 2021 the GTK team
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library. If not, see <http://www.gnu.org/licenses/>.
- */
-
-/* This code is derived from portions provided by the mingw-w64 project
- * (mingw-w64.org), originally licensed under the Zope Public License
- * (ZPL) version 2.1, with modifications made on May 12, 2021.
- * Legal notice of the Zope Public License version 2.1 follows:
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- *    1. Redistributions in source code must retain the accompanying copyright
- *       notice, this list of conditions, and the following disclaimer.
- *    2. Redistributions in binary form must reproduce the accompanying
- *       copyright notice, this list of conditions, and the following disclaimer
- *       in the documentation and/or other materials provided with the
- *       distribution.
- *    3. Names of the copyright holders must not be used to endorse or promote
- *       products derived from this software without prior written permission
- *       from the copyright holders.
- *    4. The right to distribute this software or to use it for any purpose does
- *       not give you the right to use Servicemarks (sm) or Trademarks (tm) of
- *       the copyright holders.  Use of them is covered by separate agreement
- *       with the copyright holders.
- *    5. If any files are modified, you must cause the modified files to carry
- *       prominent notices stating that you changed the files and the date of
- *       any change.
- */
-
-#ifndef POINTER_FLAG_NONE
-
-#include <windows.h>
-#include <tchar.h>
-
-#define WM_POINTERDEVICECHANGE 0x238
-#define WM_POINTERDEVICEINRANGE 0x239
-#define WM_POINTERDEVICEOUTOFRANGE 0x23a
-
-#define WM_NCPOINTERUPDATE 0x0241
-#define WM_NCPOINTERDOWN 0x0242
-#define WM_NCPOINTERUP 0x0243
-#define WM_POINTERUPDATE 0x0245
-#define WM_POINTERDOWN 0x0246
-#define WM_POINTERUP 0x0247
-#define WM_POINTERENTER 0x0249
-#define WM_POINTERLEAVE 0x024a
-#define WM_POINTERACTIVATE 0x024b
-#define WM_POINTERCAPTURECHANGED 0x024c
-#define WM_TOUCHHITTESTING 0x024d
-#define WM_POINTERWHEEL 0x024e
-#define WM_POINTERHWHEEL 0x024f
-#define DM_POINTERHITTEST 0x0250
-#define WM_POINTERROUTEDTO 0x0251
-#define WM_POINTERROUTEDAWAY 0x0252
-#define WM_POINTERROUTEDRELEASED 0x0253
-
-#define POINTER_FLAG_NONE 0x00000000
-#define POINTER_FLAG_NEW 0x00000001
-#define POINTER_FLAG_INRANGE 0x00000002
-#define POINTER_FLAG_INCONTACT 0x00000004
-#define POINTER_FLAG_FIRSTBUTTON 0x00000010
-#define POINTER_FLAG_SECONDBUTTON 0x00000020
-#define POINTER_FLAG_THIRDBUTTON 0x00000040
-#define POINTER_FLAG_FOURTHBUTTON 0x00000080
-#define POINTER_FLAG_FIFTHBUTTON 0x00000100
-#define POINTER_FLAG_PRIMARY 0x00002000
-#define POINTER_FLAG_CONFIDENCE 0x00004000
-#define POINTER_FLAG_CANCELED 0x00008000
-#define POINTER_FLAG_DOWN 0x00010000
-#define POINTER_FLAG_UPDATE 0x00020000
-#define POINTER_FLAG_UP 0x00040000
-#define POINTER_FLAG_WHEEL 0x00080000
-#define POINTER_FLAG_HWHEEL 0x00100000
-#define POINTER_FLAG_CAPTURECHANGED 0x00200000
-#define POINTER_FLAG_HASTRANSFORM 0x00400000
-
-#define POINTER_MOD_SHIFT (0x0004)
-#define POINTER_MOD_CTRL (0x0008)
-
-#define TOUCH_FLAG_NONE 0x00000000
-
-#define TOUCH_MASK_NONE 0x00000000
-#define TOUCH_MASK_CONTACTAREA 0x00000001
-#define TOUCH_MASK_ORIENTATION 0x00000002
-#define TOUCH_MASK_PRESSURE 0x00000004
-
-#define PEN_FLAG_NONE 0x00000000
-#define PEN_FLAG_BARREL 0x00000001
-#define PEN_FLAG_INVERTED 0x00000002
-#define PEN_FLAG_ERASER 0x00000004
-
-#define PEN_MASK_NONE 0x00000000
-#define PEN_MASK_PRESSURE 0x00000001
-#define PEN_MASK_ROTATION 0x00000002
-#define PEN_MASK_TILT_X 0x00000004
-#define PEN_MASK_TILT_Y 0x00000008
-
-#define POINTER_MESSAGE_FLAG_NEW 0x00000001
-#define POINTER_MESSAGE_FLAG_INRANGE 0x00000002
-#define POINTER_MESSAGE_FLAG_INCONTACT 0x00000004
-#define POINTER_MESSAGE_FLAG_FIRSTBUTTON 0x00000010
-#define POINTER_MESSAGE_FLAG_SECONDBUTTON 0x00000020
-#define POINTER_MESSAGE_FLAG_THIRDBUTTON 0x00000040
-#define POINTER_MESSAGE_FLAG_FOURTHBUTTON 0x00000080
-#define POINTER_MESSAGE_FLAG_FIFTHBUTTON 0x00000100
-#define POINTER_MESSAGE_FLAG_PRIMARY 0x00002000
-#define POINTER_MESSAGE_FLAG_CONFIDENCE 0x00004000
-#define POINTER_MESSAGE_FLAG_CANCELED 0x00008000
-
-#define GET_POINTERID_WPARAM(wParam) (LOWORD (wParam))
-#define IS_POINTER_FLAG_SET_WPARAM(wParam, flag) (((DWORD)HIWORD (wParam) &(flag)) == (flag))
-#define IS_POINTER_NEW_WPARAM(wParam) IS_POINTER_FLAG_SET_WPARAM (wParam, POINTER_MESSAGE_FLAG_NEW)
-#define IS_POINTER_INRANGE_WPARAM(wParam) IS_POINTER_FLAG_SET_WPARAM (wParam, POINTER_MESSAGE_FLAG_INRANGE)
-#define IS_POINTER_INCONTACT_WPARAM(wParam) IS_POINTER_FLAG_SET_WPARAM (wParam, POINTER_MESSAGE_FLAG_INCONTACT)
-#define IS_POINTER_FIRSTBUTTON_WPARAM(wParam) IS_POINTER_FLAG_SET_WPARAM (wParam, POINTER_MESSAGE_FLAG_FIRSTBUTTON)
-#define IS_POINTER_SECONDBUTTON_WPARAM(wParam) IS_POINTER_FLAG_SET_WPARAM (wParam, POINTER_MESSAGE_FLAG_SECONDBUTTON)
-#define IS_POINTER_THIRDBUTTON_WPARAM(wParam) IS_POINTER_FLAG_SET_WPARAM (wParam, POINTER_MESSAGE_FLAG_THIRDBUTTON)
-#define IS_POINTER_FOURTHBUTTON_WPARAM(wParam) IS_POINTER_FLAG_SET_WPARAM (wParam, POINTER_MESSAGE_FLAG_FOURTHBUTTON)
-#define IS_POINTER_FIFTHBUTTON_WPARAM(wParam) IS_POINTER_FLAG_SET_WPARAM (wParam, POINTER_MESSAGE_FLAG_FIFTHBUTTON)
-#define IS_POINTER_PRIMARY_WPARAM(wParam) IS_POINTER_FLAG_SET_WPARAM (wParam, POINTER_MESSAGE_FLAG_PRIMARY)
-#define HAS_POINTER_CONFIDENCE_WPARAM(wParam) IS_POINTER_FLAG_SET_WPARAM (wParam, POINTER_MESSAGE_FLAG_CONFIDENCE)
-#define IS_POINTER_CANCELED_WPARAM(wParam) IS_POINTER_FLAG_SET_WPARAM (wParam, POINTER_MESSAGE_FLAG_CANCELED)
-
-#define PA_ACTIVATE MA_ACTIVATE
-#define PA_NOACTIVATE MA_NOACTIVATE
-
-typedef DWORD POINTER_INPUT_TYPE;
-typedef UINT32 POINTER_FLAGS;
-typedef UINT32 TOUCH_FLAGS;
-typedef UINT32 TOUCH_MASK;
-typedef UINT32 PEN_FLAGS;
-typedef UINT32 PEN_MASK;
-
-enum tagPOINTER_INPUT_TYPE {
-  PT_POINTER = 0x00000001,
-  PT_TOUCH = 0x00000002,
-  PT_PEN = 0x00000003,
-  PT_MOUSE = 0x00000004,
-  PT_TOUCHPAD = 0x00000005
-};
-
-typedef enum tagFEEDBACK_TYPE {
-  FEEDBACK_TOUCH_CONTACTVISUALIZATION = 1,
-  FEEDBACK_PEN_BARRELVISUALIZATION = 2,
-  FEEDBACK_PEN_TAP = 3,
-  FEEDBACK_PEN_DOUBLETAP = 4,
-  FEEDBACK_PEN_PRESSANDHOLD = 5,
-  FEEDBACK_PEN_RIGHTTAP = 6,
-  FEEDBACK_TOUCH_TAP = 7,
-  FEEDBACK_TOUCH_DOUBLETAP = 8,
-  FEEDBACK_TOUCH_PRESSANDHOLD = 9,
-  FEEDBACK_TOUCH_RIGHTTAP = 10,
-  FEEDBACK_GESTURE_PRESSANDTAP = 11,
-  FEEDBACK_MAX = 0xffffffff
-} FEEDBACK_TYPE;
-
-typedef enum tagPOINTER_BUTTON_CHANGE_TYPE {
-  POINTER_CHANGE_NONE,
-  POINTER_CHANGE_FIRSTBUTTON_DOWN,
-  POINTER_CHANGE_FIRSTBUTTON_UP,
-  POINTER_CHANGE_SECONDBUTTON_DOWN,
-  POINTER_CHANGE_SECONDBUTTON_UP,
-  POINTER_CHANGE_THIRDBUTTON_DOWN,
-  POINTER_CHANGE_THIRDBUTTON_UP,
-  POINTER_CHANGE_FOURTHBUTTON_DOWN,
-  POINTER_CHANGE_FOURTHBUTTON_UP,
-  POINTER_CHANGE_FIFTHBUTTON_DOWN,
-  POINTER_CHANGE_FIFTHBUTTON_UP,
-} POINTER_BUTTON_CHANGE_TYPE;
-
-typedef struct tagPOINTER_INFO {
-  POINTER_INPUT_TYPE pointerType;
-  UINT32 pointerId;
-  UINT32 frameId;
-  POINTER_FLAGS pointerFlags;
-  HANDLE sourceDevice;
-  HWND hwndTarget;
-  POINT ptPixelLocation;
-  POINT ptHimetricLocation;
-  POINT ptPixelLocationRaw;
-  POINT ptHimetricLocationRaw;
-  DWORD dwTime;
-  UINT32 historyCount;
-  INT32 InputData;
-  DWORD dwKeyStates;
-  UINT64 PerformanceCount;
-  POINTER_BUTTON_CHANGE_TYPE ButtonChangeType;
-} POINTER_INFO;
-
-typedef struct tagPOINTER_TOUCH_INFO {
-  POINTER_INFO pointerInfo;
-  TOUCH_FLAGS touchFlags;
-  TOUCH_MASK touchMask;
-  RECT rcContact;
-  RECT rcContactRaw;
-  UINT32 orientation;
-  UINT32 pressure;
-} POINTER_TOUCH_INFO;
-
-typedef struct tagPOINTER_PEN_INFO {
-  POINTER_INFO pointerInfo;
-  PEN_FLAGS penFlags;
-  PEN_MASK penMask;
-  UINT32 pressure;
-  UINT32 rotation;
-  INT32 tiltX;
-  INT32 tiltY;
-} POINTER_PEN_INFO;
-
-typedef enum {
-  POINTER_FEEDBACK_DEFAULT = 1,
-  POINTER_FEEDBACK_INDIRECT = 2,
-  POINTER_FEEDBACK_NONE = 3
-} POINTER_FEEDBACK_MODE;
-
-typedef struct tagUSAGE_PROPERTIES {
-  USHORT level;
-  USHORT page;
-  USHORT usage;
-  INT32 logicalMinimum;
-  INT32 logicalMaximum;
-  USHORT unit;
-  USHORT exponent;
-  BYTE count;
-  INT32 physicalMinimum;
-  INT32 physicalMaximum;
-} USAGE_PROPERTIES, *PUSAGE_PROPERTIES;
-
-typedef struct tagPOINTER_TYPE_INFO {
-  POINTER_INPUT_TYPE  type;
-  union {
-      POINTER_TOUCH_INFO touchInfo;
-      POINTER_PEN_INFO penInfo;
-  } DUMMYUNIONNAME;
-} POINTER_TYPE_INFO, *PPOINTER_TYPE_INFO;
-
-#define POINTER_DEVICE_PRODUCT_STRING_MAX 520
-#define PDC_ARRIVAL 0x001
-#define PDC_REMOVAL 0x002
-#define PDC_ORIENTATION_0 0x004
-#define PDC_ORIENTATION_90 0x008
-#define PDC_ORIENTATION_180 0x010
-#define PDC_ORIENTATION_270 0x020
-#define PDC_MODE_DEFAULT 0x040
-#define PDC_MODE_CENTERED 0x080
-#define PDC_MAPPING_CHANGE 0x100
-#define PDC_RESOLUTION 0x200
-#define PDC_ORIGIN 0x400
-#define PDC_MODE_ASPECTRATIOPRESERVED 0x800
-
-typedef enum tagPOINTER_DEVICE_TYPE {
-  POINTER_DEVICE_TYPE_INTEGRATED_PEN = 0x00000001,
-  POINTER_DEVICE_TYPE_EXTERNAL_PEN = 0x00000002,
-  POINTER_DEVICE_TYPE_TOUCH = 0x00000003,
-  POINTER_DEVICE_TYPE_TOUCH_PAD = 0x00000004,
-  POINTER_DEVICE_TYPE_MAX = 0xffffffff
-} POINTER_DEVICE_TYPE;
-
-typedef struct tagPOINTER_DEVICE_INFO {
-  DWORD displayOrientation;
-  HANDLE device;
-  POINTER_DEVICE_TYPE pointerDeviceType;
-  HMONITOR monitor;
-  ULONG startingCursorId;
-  USHORT maxActiveContacts;
-  WCHAR productString[POINTER_DEVICE_PRODUCT_STRING_MAX];
-} POINTER_DEVICE_INFO;
-
-typedef struct tagPOINTER_DEVICE_PROPERTY {
-  INT32 logicalMin;
-  INT32 logicalMax;
-  INT32 physicalMin;
-  INT32 physicalMax;
-  UINT32 unit;
-  UINT32 unitExponent;
-  USHORT usagePageId;
-  USHORT usageId;
-} POINTER_DEVICE_PROPERTY;
-
-typedef enum tagPOINTER_DEVICE_CURSOR_TYPE {
-  POINTER_DEVICE_CURSOR_TYPE_UNKNOWN = 0x00000000,
-  POINTER_DEVICE_CURSOR_TYPE_TIP = 0x00000001,
-  POINTER_DEVICE_CURSOR_TYPE_ERASER = 0x00000002,
-  POINTER_DEVICE_CURSOR_TYPE_MAX = 0xffffffff
-} POINTER_DEVICE_CURSOR_TYPE;
-
-typedef struct tagPOINTER_DEVICE_CURSOR_INFO {
-  UINT32 cursorId;
-  POINTER_DEVICE_CURSOR_TYPE cursor;
-} POINTER_DEVICE_CURSOR_INFO;
-
-#endif /* POINTER_FLAG_NONE */
-
-#if WINVER < 0x0601
-
-typedef struct tagGESTURECONFIG {
-  DWORD dwID;
-  DWORD dwWant;
-  DWORD dwBlock;
-} GESTURECONFIG,*PGESTURECONFIG;
-
-#endif /* WINVER < 0x0601 */
-
-#ifndef MICROSOFT_TABLETPENSERVICE_PROPERTY
-#define MICROSOFT_TABLETPENSERVICE_PROPERTY _T("MicrosoftTabletPenServiceProperty")
-#endif
@@ -204,6 +204,9 @@ static void
 gdk_x11_display_init (GdkX11Display *self)
 {
  self->monitors = g_list_store_new (GDK_TYPE_MONITOR);
+  self->program_class = g_strdup (g_get_prgname ());
+  if (self->program_class && self->program_class[0])
+    self->program_class[0] = g_ascii_toupper (self->program_class[0]);
 }

 static void
@@ -1037,8 +1040,8 @@ gdk_x11_display_translate_event (GdkEventTranslator *translator,
      if (xevent->type - display_x11->xrandr_event_base == RRScreenChangeNotify ||
          xevent->type - display_x11->xrandr_event_base == RRNotify)
 	{
-          if (display_x11->screen)
-            _gdk_x11_screen_size_changed (display_x11->screen, xevent);
+          if (x11_screen)
+            _gdk_x11_screen_size_changed (x11_screen, xevent);
 	}
      else
 #endif
@@ -1282,10 +1282,7 @@ _gdk_x11_display_create_surface (GdkDisplay     *display,

  class_hint = XAllocClassHint ();
  class_hint->res_name = (char *) g_get_prgname ();
-  if (display_x11->program_class)
-    class_hint->res_class = (char *) display_x11->program_class;
-  else
-    class_hint->res_class = class_hint->res_name;
+  class_hint->res_class = (char *) display_x11->program_class;
  XSetClassHint (xdisplay, impl->xid, class_hint);
  XFree (class_hint);

@@ -89,7 +89,7 @@ get_boolean_default (GdkX11Screen *x11_screen,
  char *v;
  int i;

-  if (gdk_display_get_debug_flags (GDK_SCREEN_DISPLAY (x11_screen)) & GDK_DEBUG_DEFAULT_SETTINGS)
+  if (GDK_DISPLAY_DEBUG_CHECK (GDK_SCREEN_DISPLAY (x11_screen), DEFAULT_SETTINGS))
      return FALSE;

  v = XGetDefault (dpy, "Xft", option);
@@ -114,7 +114,7 @@ get_double_default (GdkX11Screen *x11_screen,
  Display *dpy = GDK_SCREEN_XDISPLAY (x11_screen);
  char     *v, *e;

-  if (gdk_display_get_debug_flags (GDK_SCREEN_DISPLAY (x11_screen)) & GDK_DEBUG_DEFAULT_SETTINGS)
+  if (GDK_DISPLAY_DEBUG_CHECK (GDK_SCREEN_DISPLAY (x11_screen), DEFAULT_SETTINGS))
      return FALSE;

  v = XGetDefault (dpy, "Xft", option);
@@ -141,7 +141,7 @@ get_integer_default (GdkX11Screen *x11_screen,
  Display *dpy = GDK_SCREEN_XDISPLAY (x11_screen);
  char *v, *e;

-  if (gdk_display_get_debug_flags (GDK_SCREEN_DISPLAY (x11_screen)) & GDK_DEBUG_DEFAULT_SETTINGS)
+  if (GDK_DISPLAY_DEBUG_CHECK (GDK_SCREEN_DISPLAY (x11_screen), DEFAULT_SETTINGS))
      return FALSE;

  v = XGetDefault (dpy, "Xft", option);
@@ -0,0 +1,317 @@
+
+#pragma once
+
+#define SANITY_CHECKS 0
+
+
+
+#define rounded_rect_top_left(r) (GRAPHENE_RECT_INIT(r->bounds.origin.x, \
+                                                     r->bounds.origin.y, \
+                                                     r->corner[0].width, r->corner[0].height))
+
+#define rounded_rect_top_right(r) (GRAPHENE_RECT_INIT(r->bounds.origin.x + r->bounds.size.width - r->corner[1].width, \
+                                                      r->bounds.origin.y, \
+                                                      r->corner[1].width, r->corner[1].height))
+
+#define rounded_rect_bottom_right(r) (GRAPHENE_RECT_INIT(r->bounds.origin.x + r->bounds.size.width - r->corner[2].width, \
+                                                         r->bounds.origin.y + r->bounds.size.height - r->corner[2].height, \
+                                                         r->corner[2].width, r->corner[2].height))
+
+#define rounded_rect_bottom_left(r) (GRAPHENE_RECT_INIT(r->bounds.origin.x, \
+                                                         r->bounds.origin.y + r->bounds.size.height - r->corner[2].height, \
+                                                         r->corner[3].width, r->corner[3].height))
+
+
+#define rounded_rect_corner0(r) rounded_rect_top_left(r)
+#define rounded_rect_corner1(r) rounded_rect_top_right(r)
+#define rounded_rect_corner2(r) rounded_rect_bottom_right(r)
+#define rounded_rect_corner3(r) rounded_rect_bottom_left(r)
+
+#define rounded_rect_corner(r, i) (rounded_rect_corner ##i(r))
+#define graphene_size_non_zero(s) (s->width > 0 && s->height > 0)
+#define rounded_rect_has_corner(r, i) (r->corner[i].width > 0 && r->corner[i].height > 0)
+
+#define rect_contains_point(r, _x, _y) (_x >= (r)->origin.x && _x <= (r)->origin.x + (r)->size.width && \
+                                        _y >= (r)->origin.y && _y <= (r)->origin.y + (r)->size.height)
+
+enum {
+  NINE_SLICE_TOP_LEFT      = 0,
+  NINE_SLICE_TOP_CENTER    = 1,
+  NINE_SLICE_TOP_RIGHT     = 2,
+  NINE_SLICE_LEFT_CENTER   = 3,
+  NINE_SLICE_CENTER        = 4,
+  NINE_SLICE_RIGHT_CENTER  = 5,
+  NINE_SLICE_BOTTOM_LEFT   = 6,
+  NINE_SLICE_BOTTOM_CENTER = 7,
+  NINE_SLICE_BOTTOM_RIGHT  = 8,
+};
+#define NINE_SLICE_SIZE 9 /* Hah. */
+
+typedef struct
+{
+  int texture_id;
+  float x;
+  float y;
+  float x2;
+  float y2;
+} TextureRegion;
+
+static inline bool G_GNUC_PURE
+slice_is_visible (const cairo_rectangle_int_t *r)
+{
+  return (r->width > 0 && r->height > 0);
+}
+
+static inline void
+nine_slice_rounded_rect (const GskRoundedRect  *rect,
+                         cairo_rectangle_int_t *out_rects)
+{
+  const graphene_point_t *origin = &rect->bounds.origin;
+  const graphene_size_t *size = &rect->bounds.size;
+  const int top_height = ceilf (MAX (rect->corner[GSK_CORNER_TOP_LEFT].height,
+                                     rect->corner[GSK_CORNER_TOP_RIGHT].height));
+  const int bottom_height = ceilf (MAX (rect->corner[GSK_CORNER_BOTTOM_LEFT].height,
+                                        rect->corner[GSK_CORNER_BOTTOM_RIGHT].height));
+  const int right_width = ceilf (MAX (rect->corner[GSK_CORNER_TOP_RIGHT].width,
+                                      rect->corner[GSK_CORNER_BOTTOM_RIGHT].width));
+  const int left_width = ceilf (MAX (rect->corner[GSK_CORNER_TOP_LEFT].width,
+                                     rect->corner[GSK_CORNER_BOTTOM_LEFT].width));
+
+  /* Top left */
+  out_rects[0] = (cairo_rectangle_int_t) {
+                   origin->x, origin->y,
+                   left_width, top_height,
+                 };
+
+  /* Top center */
+  out_rects[1] = (cairo_rectangle_int_t) {
+                   origin->x + size->width / 2.0 - 0.5, origin->y,
+                   1, top_height,
+                 };
+
+  /* Top right */
+  out_rects[2] = (cairo_rectangle_int_t) {
+                   origin->x + size->width - right_width, origin->y,
+                   right_width, top_height
+                 };
+
+  /* Left center */
+  out_rects[3] = (cairo_rectangle_int_t) {
+                   origin->x, origin->y + size->height / 2,
+                   left_width, 1,
+                 };
+
+  /* center */
+  out_rects[4] = (cairo_rectangle_int_t) {
+                   origin->x + size->width / 2.0 - 0.5,
+                   origin->y + size->height / 2.0 - 0.5,
+                   1, 1
+                 };
+
+  /* Right center */
+  out_rects[5] = (cairo_rectangle_int_t) {
+                   origin->x + size->width - right_width,
+                   origin->y + (size->height / 2.0) - 0.5,
+                   right_width,
+                   1,
+                 };
+
+  /* Bottom Left */
+  out_rects[6] = (cairo_rectangle_int_t) {
+                   origin->x, origin->y + size->height - bottom_height,
+                   left_width, bottom_height,
+                 };
+
+  /* Bottom center */
+  out_rects[7] = (cairo_rectangle_int_t) {
+                   origin->x + (size->width / 2.0) - 0.5,
+                     origin->y + size->height - bottom_height,
+                   1, bottom_height,
+                 };
+
+  /* Bottom right */
+  out_rects[8] = (cairo_rectangle_int_t) {
+                   origin->x + size->width - right_width,
+                   origin->y + size->height - bottom_height,
+                   right_width, bottom_height,
+                 };
+
+#if SANITY_CHECKS
+  g_assert_cmpfloat (size->width, >=, left_width + right_width);
+  g_assert_cmpfloat (size->height, >=, top_height + bottom_height);
+#endif
+}
+
+static inline void
+nine_slice_grow (cairo_rectangle_int_t *slices,
+                 const int              amount)
+{
+  /* top left */
+  slices[0].x -= amount;
+  slices[0].y -= amount;
+  if (amount > slices[0].width)
+    slices[0].width += amount * 2;
+  else
+    slices[0].width += amount;
+
+  if (amount > slices[0].height)
+    slices[0].height += amount * 2;
+  else
+    slices[0].height += amount;
+
+
+  /* Top center */
+  slices[1].y -= amount;
+  if (amount > slices[1].height)
+    slices[1].height += amount * 2;
+  else
+    slices[1].height += amount;
+
+  /* top right */
+  slices[2].y -= amount;
+  if (amount > slices[2].width)
+    {
+      slices[2].x -= amount;
+      slices[2].width += amount * 2;
+    }
+  else
+    {
+     slices[2].width += amount;
+    }
+
+  if (amount > slices[2].height)
+    slices[2].height += amount * 2;
+  else
+    slices[2].height += amount;
+
+
+
+  slices[3].x -= amount;
+  if (amount > slices[3].width)
+    slices[3].width += amount * 2;
+  else
+    slices[3].width += amount;
+
+  /* Leave Britney^Wcenter alone */
+
+  if (amount > slices[5].width)
+    {
+      slices[5].x -= amount;
+      slices[5].width += amount * 2;
+    }
+  else
+    {
+      slices[5].width += amount;
+    }
+
+
+  /* Bottom left */
+  slices[6].x -= amount;
+  if (amount > slices[6].width)
+    {
+      slices[6].width += amount * 2;
+    }
+  else
+    {
+      slices[6].width += amount;
+    }
+
+  if (amount > slices[6].height)
+    {
+      slices[6].y -= amount;
+      slices[6].height += amount * 2;
+    }
+  else
+    {
+      slices[6].height += amount;
+    }
+
+
+  /* Bottom center */
+  if (amount > slices[7].height)
+    {
+      slices[7].y -= amount;
+      slices[7].height += amount * 2;
+    }
+  else
+    {
+      slices[7].height += amount;
+    }
+
+  if (amount > slices[8].width)
+    {
+      slices[8].x -= amount;
+      slices[8].width += amount * 2;
+    }
+  else
+    {
+      slices[8].width += amount;
+    }
+
+  if (amount > slices[8].height)
+    {
+      slices[8].y -= amount;
+      slices[8].height += amount * 2;
+    }
+  else
+    {
+      slices[8].height += amount;
+    }
+
+#if SANITY_CHECKS
+  {
+    for (int i = 0; i < 9; i ++)
+      {
+        g_assert_cmpint (slices[i].x, >=, 0);
+        g_assert_cmpint (slices[i].y, >=, 0);
+        g_assert_cmpint (slices[i].width, >=, 0);
+        g_assert_cmpint (slices[i].height, >=, 0);
+      }
+
+    /* Rows don't overlap */
+    for (int i = 0; i < 3; i++)
+      {
+        g_assert_cmpint (slices[i * 3 + 0].x + slices[i * 3 + 0].width, <, slices[i * 3 + 1].x);
+      }
+  }
+#endif
+
+}
+
+static inline void
+nine_slice_to_texture_coords (const cairo_rectangle_int_t *slices,
+                              const int                    texture_width,
+                              const int                    texture_height,
+                              TextureRegion               *out_regions)
+{
+  const float fw = (float)texture_width;
+  const float fh = (float)texture_height;
+  int i;
+
+  for (i = 0; i < 9; i++)
+    {
+      out_regions[i] = (TextureRegion) {
+        0, /* Texture id */
+        slices[i].x / fw,
+        1.0 - ((slices[i].y + slices[i].height) / fh),
+        (slices[i].x + slices[i].width)  / fw,
+        1.0 - (slices[i].y / fh),
+      };
+    }
+
+#if SANITY_CHECKS
+  {
+    for (i = 0; i < 9; i++)
+      {
+        const TextureRegion *r = &out_regions[i];
+        g_assert_cmpfloat (r->x, >=, 0);
+        g_assert_cmpfloat (r->x, <=, 1);
+        g_assert_cmpfloat (r->y, >=, 0);
+        g_assert_cmpfloat (r->y, <=, 1);
+
+        g_assert_cmpfloat (r->x, <, r->x2);
+        g_assert_cmpfloat (r->y, <, r->y2);
+      }
+  }
+#endif
+}
@@ -0,0 +1,849 @@
+#include "config.h"
+
+#include "gskgldriverprivate.h"
+
+#include "gskdebugprivate.h"
+#include "gskprofilerprivate.h"
+#include "gdk/gdkglcontextprivate.h"
+#include "gdk/gdktextureprivate.h"
+#include "gdk/gdkgltextureprivate.h"
+#include "gdkmemorytextureprivate.h"
+
+#include <gdk/gdk.h>
+#include <epoxy/gl.h>
+
+ typedef struct {
+  GLuint fbo_id;
+  GLuint depth_stencil_id;
+} Fbo;
+
+typedef struct {
+  GLuint texture_id;
+  int width;
+  int height;
+  GLuint min_filter;
+  GLuint mag_filter;
+  Fbo fbo;
+  GdkTexture *user;
+  guint in_use : 1;
+  guint permanent : 1;
+
+  /* TODO: Make this optional and not for every texture... */
+  TextureSlice *slices;
+  guint n_slices;
+} Texture;
+
+struct _GskGLDriver
+{
+  GObject parent_instance;
+
+  GdkGLContext *gl_context;
+  GskProfiler *profiler;
+  struct {
+    GQuark created_textures;
+    GQuark reused_textures;
+    GQuark surface_uploads;
+  } counters;
+
+  Fbo default_fbo;
+
+  GHashTable *textures;         /* texture_id -> Texture */
+  GHashTable *pointer_textures; /* pointer -> texture_id */
+
+  const Texture *bound_source_texture;
+
+  int max_texture_size;
+
+  gboolean in_frame : 1;
+};
+
+G_DEFINE_TYPE (GskGLDriver, gsk_gl_driver, G_TYPE_OBJECT)
+
+static void
+upload_gdk_texture (GdkTexture      *source_texture,
+                    int              target,
+                    int              x_offset,
+                    int              y_offset,
+                    int              width,
+                    int              height)
+{
+  cairo_surface_t *surface = NULL;
+  GdkMemoryFormat data_format;
+  const guchar *data;
+  gsize data_stride;
+  gsize bpp;
+
+  g_return_if_fail (source_texture != NULL);
+  g_return_if_fail (x_offset + width <= gdk_texture_get_width (source_texture));
+  g_return_if_fail (y_offset + height <= gdk_texture_get_height (source_texture));
+
+  /* Note: GdkGLTextures are already handled before we reach this and reused as-is */
+
+  if (GDK_IS_MEMORY_TEXTURE (source_texture))
+    {
+      GdkMemoryTexture *memory_texture = GDK_MEMORY_TEXTURE (source_texture);
+      data = gdk_memory_texture_get_data (memory_texture);
+      data_format = gdk_memory_texture_get_format (memory_texture);
+      data_stride = gdk_memory_texture_get_stride (memory_texture);
+    }
+  else
+    {
+      /* Fall back to downloading to a surface */
+      surface = gdk_texture_download_surface (source_texture);
+      cairo_surface_flush (surface);
+      data = cairo_image_surface_get_data (surface);
+      data_format = GDK_MEMORY_DEFAULT;
+      data_stride = cairo_image_surface_get_stride (surface);
+    }
+
+  bpp = gdk_memory_format_bytes_per_pixel (data_format);
+
+  gdk_gl_context_upload_texture (gdk_gl_context_get_current (),
+                                 data + x_offset * bpp + y_offset * data_stride,
+                                 width, height, data_stride,
+                                 data_format, target);
+
+  if (surface)
+    cairo_surface_destroy (surface);
+}
+
+static Texture *
+texture_new (void)
+{
+  return g_slice_new0 (Texture);
+}
+
+static inline void
+fbo_clear (const Fbo *f)
+{
+  if (f->depth_stencil_id != 0)
+    glDeleteRenderbuffers (1, &f->depth_stencil_id);
+
+  glDeleteFramebuffers (1, &f->fbo_id);
+}
+
+static void
+texture_free (gpointer data)
+{
+  Texture *t = data;
+  guint i;
+
+  if (t->user)
+    gdk_texture_clear_render_data (t->user);
+
+  if (t->fbo.fbo_id != 0)
+    fbo_clear (&t->fbo);
+
+  if (t->texture_id != 0)
+    {
+      glDeleteTextures (1, &t->texture_id);
+    }
+  else
+    {
+      g_assert_cmpint (t->n_slices, >, 0);
+
+      for (i = 0; i < t->n_slices; i ++)
+        glDeleteTextures (1, &t->slices[i].texture_id);
+    }
+
+  g_slice_free (Texture, t);
+}
+
+static void
+gsk_gl_driver_set_texture_parameters (GskGLDriver *self,
+                                      int          min_filter,
+                                      int          mag_filter)
+{
+  glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, min_filter);
+  glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, mag_filter);
+
+  glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+  glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+}
+
+static void
+gsk_gl_driver_finalize (GObject *gobject)
+{
+  GskGLDriver *self = GSK_GL_DRIVER (gobject);
+
+  gdk_gl_context_make_current (self->gl_context);
+
+  g_clear_pointer (&self->textures, g_hash_table_unref);
+  g_clear_pointer (&self->pointer_textures, g_hash_table_unref);
+  g_clear_object (&self->profiler);
+
+  if (self->gl_context == gdk_gl_context_get_current ())
+    gdk_gl_context_clear_current ();
+
+  G_OBJECT_CLASS (gsk_gl_driver_parent_class)->finalize (gobject);
+}
+
+static void
+gsk_gl_driver_class_init (GskGLDriverClass *klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+
+  gobject_class->finalize = gsk_gl_driver_finalize;
+}
+
+static void
+gsk_gl_driver_init (GskGLDriver *self)
+{
+  self->textures = g_hash_table_new_full (NULL, NULL, NULL, texture_free);
+
+  self->max_texture_size = -1;
+
+#ifdef G_ENABLE_DEBUG
+  self->profiler = gsk_profiler_new ();
+  self->counters.created_textures = gsk_profiler_add_counter (self->profiler,
+                                                              "created_textures",
+                                                              "Textures created this frame",
+                                                              TRUE);
+  self->counters.reused_textures = gsk_profiler_add_counter (self->profiler,
+                                                             "reused_textures",
+                                                             "Textures reused this frame",
+                                                             TRUE);
+  self->counters.surface_uploads = gsk_profiler_add_counter (self->profiler,
+                                                             "surface_uploads",
+                                                             "Texture uploads from surfaces this frame",
+                                                             TRUE);
+#endif
+}
+
+GskGLDriver *
+gsk_gl_driver_new (GdkGLContext *context)
+{
+  GskGLDriver *self;
+  g_return_val_if_fail (GDK_IS_GL_CONTEXT (context), NULL);
+
+  self = (GskGLDriver *) g_object_new (GSK_TYPE_GL_DRIVER, NULL);
+  self->gl_context = context;
+
+  return self;
+}
+
+void
+gsk_gl_driver_begin_frame (GskGLDriver *self)
+{
+  g_return_if_fail (GSK_IS_GL_DRIVER (self));
+  g_return_if_fail (!self->in_frame);
+
+  self->in_frame = TRUE;
+
+  if (self->max_texture_size < 0)
+    {
+      glGetIntegerv (GL_MAX_TEXTURE_SIZE, (GLint *) &self->max_texture_size);
+      GSK_NOTE (OPENGL, g_message ("GL max texture size: %d", self->max_texture_size));
+    }
+
+  glBindFramebuffer (GL_FRAMEBUFFER, 0);
+
+  glActiveTexture (GL_TEXTURE0);
+  glBindTexture (GL_TEXTURE_2D, 0);
+
+  glActiveTexture (GL_TEXTURE0 + 1);
+  glBindTexture (GL_TEXTURE_2D, 0);
+
+  glBindVertexArray (0);
+  glUseProgram (0);
+
+  glActiveTexture (GL_TEXTURE0);
+
+#ifdef G_ENABLE_DEBUG
+  gsk_profiler_reset (self->profiler);
+#endif
+}
+
+gboolean
+gsk_gl_driver_in_frame (GskGLDriver *self)
+{
+  return self->in_frame;
+}
+
+void
+gsk_gl_driver_end_frame (GskGLDriver *self)
+{
+  g_return_if_fail (GSK_IS_GL_DRIVER (self));
+  g_return_if_fail (self->in_frame);
+
+  self->bound_source_texture = NULL;
+
+  self->default_fbo.fbo_id = 0;
+
+#ifdef G_ENABLE_DEBUG
+  GSK_NOTE (OPENGL,
+            g_message ("Textures created: %" G_GINT64_FORMAT "\n"
+                     " Textures reused: %" G_GINT64_FORMAT "\n"
+                     " Surface uploads: %" G_GINT64_FORMAT,
+                     gsk_profiler_counter_get (self->profiler, self->counters.created_textures),
+                     gsk_profiler_counter_get (self->profiler, self->counters.reused_textures),
+                     gsk_profiler_counter_get (self->profiler, self->counters.surface_uploads)));
+#endif
+
+  GSK_NOTE (OPENGL,
+            g_message ("*** Frame end: textures=%d",
+                     g_hash_table_size (self->textures)));
+
+  self->in_frame = FALSE;
+}
+
+int
+gsk_gl_driver_collect_textures (GskGLDriver *self)
+{
+  GHashTableIter iter;
+  gpointer value_p = NULL;
+  int old_size;
+
+  g_return_val_if_fail (GSK_IS_GL_DRIVER (self), 0);
+  g_return_val_if_fail (!self->in_frame, 0);
+
+  old_size = g_hash_table_size (self->textures);
+
+  g_hash_table_iter_init (&iter, self->textures);
+  while (g_hash_table_iter_next (&iter, NULL, &value_p))
+    {
+      Texture *t = value_p;
+
+      if (t->user || t->permanent)
+        continue;
+
+      if (t->in_use)
+        {
+          t->in_use = FALSE;
+
+          if (t->fbo.fbo_id != 0)
+            {
+              fbo_clear (&t->fbo);
+              t->fbo.fbo_id = 0;
+            }
+        }
+      else
+        {
+          /* Remove from self->pointer_textures. */
+          /* TODO: Is there a better way for this? */
+          if (self->pointer_textures)
+            {
+              GHashTableIter pointer_iter;
+              gpointer value;
+              gpointer p;
+
+              g_hash_table_iter_init (&pointer_iter, self->pointer_textures);
+              while (g_hash_table_iter_next (&pointer_iter, &p, &value))
+                {
+                  if (GPOINTER_TO_INT (value) == t->texture_id)
+                    {
+                      g_hash_table_iter_remove (&pointer_iter);
+                      break;
+                    }
+                }
+            }
+
+          g_hash_table_iter_remove (&iter);
+        }
+    }
+
+  return old_size - g_hash_table_size (self->textures);
+}
+
+
+GdkGLContext *
+gsk_gl_driver_get_gl_context (GskGLDriver *self)
+{
+  return self->gl_context;
+}
+
+int
+gsk_gl_driver_get_max_texture_size (GskGLDriver *self)
+{
+  if (self->max_texture_size < 0)
+    {
+      if (gdk_gl_context_get_use_es (self->gl_context))
+        return 2048;
+
+      return 1024;
+    }
+
+  return self->max_texture_size;
+}
+
+static Texture *
+gsk_gl_driver_get_texture (GskGLDriver *self,
+                           int          texture_id)
+{
+  Texture *t;
+
+  if (g_hash_table_lookup_extended (self->textures, GINT_TO_POINTER (texture_id), NULL, (gpointer *) &t))
+    return t;
+
+  return NULL;
+}
+
+static Texture *
+create_texture (GskGLDriver *self,
+                float        fwidth,
+                float        fheight)
+{
+  guint texture_id;
+  Texture *t;
+  int width = ceilf (fwidth);
+  int height = ceilf (fheight);
+
+  g_assert (width > 0);
+  g_assert (height > 0);
+
+  if (width > self->max_texture_size ||
+      height > self->max_texture_size)
+    {
+      g_critical ("Texture %d x %d is bigger than supported texture limit of %d; clipping...",
+                  width, height,
+                  self->max_texture_size);
+
+      width = MIN (width, self->max_texture_size);
+      height = MIN (height, self->max_texture_size);
+    }
+
+  glGenTextures (1, &texture_id);
+  t = texture_new ();
+  t->texture_id = texture_id;
+  t->width = width;
+  t->height = height;
+  t->min_filter = GL_NEAREST;
+  t->mag_filter = GL_NEAREST;
+  t->in_use = TRUE;
+  g_hash_table_insert (self->textures, GINT_TO_POINTER (texture_id), t);
+#ifdef G_ENABLE_DEBUG
+  gsk_profiler_counter_inc (self->profiler, self->counters.created_textures);
+#endif
+
+  return t;
+}
+
+static void
+gsk_gl_driver_release_texture (gpointer data)
+{
+  Texture *t = data;
+
+  t->user = NULL;
+}
+
+void
+gsk_gl_driver_slice_texture (GskGLDriver   *self,
+                             GdkTexture    *texture,
+                             TextureSlice **out_slices,
+                             guint         *out_n_slices)
+{
+  const int max_texture_size = gsk_gl_driver_get_max_texture_size (self) / 4; // XXX Too much?
+  const int cols = (texture->width / max_texture_size) + 1;
+  const int rows = (texture->height / max_texture_size) + 1;
+  int col, row;
+  int x = 0, y = 0; /* Position in the texture */
+  TextureSlice *slices;
+  Texture *tex;
+
+  g_assert (texture->width > max_texture_size || texture->height > max_texture_size);
+
+
+  tex = gdk_texture_get_render_data (texture, self);
+
+  if (tex != NULL)
+    {
+      g_assert (tex->n_slices > 0);
+      *out_slices = tex->slices;
+      *out_n_slices = tex->n_slices;
+      return;
+    }
+
+  slices = g_new0 (TextureSlice, cols * rows);
+
+  for (col = 0; col < cols; col ++)
+    {
+      const int slice_width = MIN (max_texture_size, texture->width - x);
+
+      for (row = 0; row < rows; row ++)
+        {
+          const int slice_height = MIN (max_texture_size, texture->height - y);
+          const int slice_index = (col * rows) + row;
+          guint texture_id;
+
+          glGenTextures (1, &texture_id);
+
+#ifdef G_ENABLE_DEBUG
+          gsk_profiler_counter_inc (self->profiler, self->counters.created_textures);
+#endif
+          glBindTexture (GL_TEXTURE_2D, texture_id);
+          gsk_gl_driver_set_texture_parameters (self, GL_NEAREST, GL_NEAREST);
+          upload_gdk_texture (texture, GL_TEXTURE_2D, x, y, slice_width, slice_height);
+
+#ifdef G_ENABLE_DEBUG
+          gsk_profiler_counter_inc (self->profiler, self->counters.surface_uploads);
+#endif
+
+          slices[slice_index].rect = (GdkRectangle){x, y, slice_width, slice_height};
+          slices[slice_index].texture_id = texture_id;
+
+          y += slice_height;
+        }
+
+      y = 0;
+      x += slice_width;
+    }
+
+  /* Allocate one Texture for the entire thing. */
+  tex = texture_new ();
+  tex->width = texture->width;
+  tex->height = texture->height;
+  tex->min_filter = GL_NEAREST;
+  tex->mag_filter = GL_NEAREST;
+  tex->in_use = TRUE;
+  tex->slices = slices;
+  tex->n_slices = cols * rows;
+
+  /* Use texture_free as destroy notify here since we are not inserting this Texture
+   * into self->textures! */
+  gdk_texture_set_render_data (texture, self, tex, texture_free);
+
+  *out_slices = slices;
+  *out_n_slices = cols * rows;
+}
+
+int
+gsk_gl_driver_get_texture_for_texture (GskGLDriver *self,
+                                       GdkTexture  *texture,
+                                       int          min_filter,
+                                       int          mag_filter)
+{
+  Texture *t;
+  GdkTexture *downloaded_texture = NULL;
+  GdkTexture *source_texture;
+
+  if (GDK_IS_GL_TEXTURE (texture))
+    {
+      GdkGLTexture *gl_texture = (GdkGLTexture *) texture;
+      GdkGLContext *texture_context = gdk_gl_texture_get_context (gl_texture);
+
+      if (gdk_gl_context_is_shared (self->gl_context, texture_context))
+        {
+          /* A GL texture from the same GL context is a simple task... */
+          return gdk_gl_texture_get_id (gl_texture);
+        }
+      else
+        {
+          cairo_surface_t *surface;
+
+          /* In this case, we have to temporarily make the texture's context the current one,
+           * download its data into our context and then create a texture from it. */
+          if (texture_context)
+            gdk_gl_context_make_current (texture_context);
+
+          surface = gdk_texture_download_surface (texture);
+          downloaded_texture = gdk_texture_new_for_surface (surface);
+          cairo_surface_destroy (surface);
+
+          gdk_gl_context_make_current (self->gl_context);
+
+          source_texture = downloaded_texture;
+        }
+    }
+  else
+    {
+      t = gdk_texture_get_render_data (texture, self);
+
+      if (t)
+        {
+          if (t->min_filter == min_filter && t->mag_filter == mag_filter)
+            return t->texture_id;
+        }
+
+      source_texture = texture;
+    }
+
+  t = create_texture (self, gdk_texture_get_width (texture), gdk_texture_get_height (texture));
+
+  if (gdk_texture_set_render_data (texture, self, t, gsk_gl_driver_release_texture))
+    t->user = texture;
+
+  gsk_gl_driver_bind_source_texture (self, t->texture_id);
+  gsk_gl_driver_init_texture (self,
+                              t->texture_id,
+                              source_texture,
+                              min_filter,
+                              mag_filter);
+  gdk_gl_context_label_object_printf (self->gl_context, GL_TEXTURE, t->texture_id,
+                                      "GdkTexture<%p> %d", texture, t->texture_id);
+
+  if (downloaded_texture)
+    g_object_unref (downloaded_texture);
+
+  return t->texture_id;
+}
+
+static guint
+texture_key_hash (gconstpointer v)
+{
+  const GskTextureKey *k = (GskTextureKey *)v;
+
+  return GPOINTER_TO_UINT (k->pointer)
+         + (guint)(k->scale_x * 100)
+         + (guint)(k->scale_y * 100)
+         + (guint)k->filter * 2 +
+         + (guint)k->pointer_is_child;
+}
+
+static gboolean
+texture_key_equal (gconstpointer v1, gconstpointer v2)
+{
+  const GskTextureKey *k1 = (GskTextureKey *)v1;
+  const GskTextureKey *k2 = (GskTextureKey *)v2;
+
+  return k1->pointer == k2->pointer &&
+         k1->scale_x == k2->scale_x &&
+         k1->scale_y == k2->scale_y &&
+         k1->filter == k2->filter &&
+         k1->pointer_is_child == k2->pointer_is_child &&
+         (!k1->pointer_is_child || graphene_rect_equal (&k1->parent_rect, &k2->parent_rect));
+}
+
+int
+gsk_gl_driver_get_texture_for_key (GskGLDriver   *self,
+                                   GskTextureKey *key)
+{
+  int id = 0;
+
+  if (G_UNLIKELY (self->pointer_textures == NULL))
+    self->pointer_textures = g_hash_table_new_full (texture_key_hash, texture_key_equal, g_free, NULL);
+
+  id = GPOINTER_TO_INT (g_hash_table_lookup (self->pointer_textures, key));
+
+  if (id != 0)
+    {
+      Texture *t;
+
+      t = g_hash_table_lookup (self->textures, GINT_TO_POINTER (id));
+
+      if (t != NULL)
+        t->in_use = TRUE;
+    }
+
+  return id;
+}
+
+void
+gsk_gl_driver_set_texture_for_key (GskGLDriver   *self,
+                                   GskTextureKey *key,
+                                   int            texture_id)
+{
+  GskTextureKey *k;
+
+  if (G_UNLIKELY (self->pointer_textures == NULL))
+    self->pointer_textures = g_hash_table_new_full (texture_key_hash, texture_key_equal, g_free, NULL);
+
+  k = g_new (GskTextureKey, 1);
+  *k = *key;
+
+  g_hash_table_insert (self->pointer_textures, k, GINT_TO_POINTER (texture_id));
+}
+
+int
+gsk_gl_driver_create_texture (GskGLDriver *self,
+                              float        width,
+                              float        height)
+{
+  Texture *t;
+
+  g_return_val_if_fail (GSK_IS_GL_DRIVER (self), -1);
+
+  t = create_texture (self, width, height);
+
+  return t->texture_id;
+}
+
+void
+gsk_gl_driver_create_render_target (GskGLDriver *self,
+                                    int          width,
+                                    int          height,
+                                    int          min_filter,
+                                    int          mag_filter,
+                                    int         *out_texture_id,
+                                    int         *out_render_target_id)
+{
+  GLuint fbo_id;
+  Texture *texture;
+
+  g_return_if_fail (self->in_frame);
+
+  texture = create_texture (self, width, height);
+  gsk_gl_driver_bind_source_texture (self, texture->texture_id);
+  gsk_gl_driver_init_texture_empty (self, texture->texture_id, min_filter, mag_filter);
+
+  glGenFramebuffers (1, &fbo_id);
+  glBindFramebuffer (GL_FRAMEBUFFER, fbo_id);
+  glFramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture->texture_id, 0);
+
+#if 0
+  if (add_depth_buffer || add_stencil_buffer)
+    {
+      glGenRenderbuffersEXT (1, &depth_stencil_buffer_id);
+      gdk_gl_context_label_object_printf (self->gl_context, GL_RENDERBUFFER, depth_stencil_buffer_id,
+                                          "%s buffer for %d", add_depth_buffer ? "Depth" : "Stencil", texture_id);
+    }
+  else
+    depth_stencil_buffer_id = 0;
+
+  glBindRenderbuffer (GL_RENDERBUFFER, depth_stencil_buffer_id);
+
+  if (add_depth_buffer || add_stencil_buffer)
+    {
+      if (add_stencil_buffer)
+        glRenderbufferStorage (GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, t->width, t->height);
+      else
+        glRenderbufferStorage (GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, t->width, t->height);
+
+      if (add_depth_buffer)
+        glFramebufferRenderbuffer (GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT,
+                                   GL_RENDERBUFFER, depth_stencil_buffer_id);
+
+      if (add_stencil_buffer)
+        glFramebufferRenderbufferEXT (GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT,
+                                      GL_RENDERBUFFER, depth_stencil_buffer_id);
+  texture->fbo.depth_stencil_id = depth_stencil_buffer_id;
+    }
+#endif
+
+  texture->fbo.fbo_id = fbo_id;
+
+  g_assert_cmphex (glCheckFramebufferStatus (GL_FRAMEBUFFER), ==, GL_FRAMEBUFFER_COMPLETE);
+
+  glBindFramebuffer (GL_FRAMEBUFFER, self->default_fbo.fbo_id);
+
+  *out_texture_id = texture->texture_id;
+  *out_render_target_id = fbo_id;
+}
+
+/* Mark the texture permanent, meaning it won'e be reused by the GLDriver.
+ * E.g. to store it in some other cache. */
+void
+gsk_gl_driver_mark_texture_permanent (GskGLDriver *self,
+                                      int          texture_id)
+{
+  Texture *t = gsk_gl_driver_get_texture (self, texture_id);
+
+  g_assert (t != NULL);
+
+  t->permanent = TRUE;
+}
+
+void
+gsk_gl_driver_bind_source_texture (GskGLDriver *self,
+                                   int          texture_id)
+{
+  Texture *t;
+
+  g_return_if_fail (GSK_IS_GL_DRIVER (self));
+  g_return_if_fail (self->in_frame);
+
+  t = gsk_gl_driver_get_texture (self, texture_id);
+  if (t == NULL)
+    {
+      g_critical ("No texture %d found.", texture_id);
+      return;
+    }
+
+  if (self->bound_source_texture != t)
+    {
+      glActiveTexture (GL_TEXTURE0);
+      glBindTexture (GL_TEXTURE_2D, t->texture_id);
+
+      self->bound_source_texture = t;
+    }
+}
+
+void
+gsk_gl_driver_destroy_texture (GskGLDriver *self,
+                               int          texture_id)
+{
+  g_return_if_fail (GSK_IS_GL_DRIVER (self));
+
+  g_hash_table_remove (self->textures, GINT_TO_POINTER (texture_id));
+}
+
+
+void
+gsk_gl_driver_init_texture_empty (GskGLDriver *self,
+                                  int          texture_id,
+                                  int          min_filter,
+                                  int          mag_filter)
+{
+  Texture *t;
+
+  g_return_if_fail (GSK_IS_GL_DRIVER (self));
+
+  t = gsk_gl_driver_get_texture (self, texture_id);
+  if (t == NULL)
+    {
+      g_critical ("No texture %d found.", texture_id);
+      return;
+    }
+
+  if (self->bound_source_texture != t)
+    {
+      g_critical ("You must bind the texture before initializing it.");
+      return;
+    }
+
+  t->min_filter = min_filter;
+  t->mag_filter = mag_filter;
+
+  gsk_gl_driver_set_texture_parameters (self, t->min_filter, t->mag_filter);
+
+  if (gdk_gl_context_get_use_es (self->gl_context))
+    glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, t->width, t->height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+  else
+    glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, t->width, t->height, 0, GL_BGRA, GL_UNSIGNED_BYTE, NULL);
+
+  glBindTexture (GL_TEXTURE_2D, 0);
+}
+
+static gboolean
+filter_uses_mipmaps (int filter)
+{
+  return filter != GL_NEAREST && filter != GL_LINEAR;
+}
+
+void
+gsk_gl_driver_init_texture (GskGLDriver     *self,
+                            int              texture_id,
+                            GdkTexture      *texture,
+                            int              min_filter,
+                            int              mag_filter)
+{
+  Texture *t;
+
+  g_return_if_fail (GSK_IS_GL_DRIVER (self));
+
+  t = gsk_gl_driver_get_texture (self, texture_id);
+  if (t == NULL)
+    {
+      g_critical ("No texture %d found.", texture_id);
+      return;
+    }
+
+  if (self->bound_source_texture != t)
+    {
+      g_critical ("You must bind the texture before initializing it.");
+      return;
+    }
+
+  gsk_gl_driver_set_texture_parameters (self, min_filter, mag_filter);
+
+  upload_gdk_texture (texture, GL_TEXTURE_2D, 0, 0, t->width, t->height);
+
+#ifdef G_ENABLE_DEBUG
+  gsk_profiler_counter_inc (self->profiler, self->counters.surface_uploads);
+#endif
+
+  t->min_filter = min_filter;
+  t->mag_filter = mag_filter;
+
+  if (filter_uses_mipmaps (t->min_filter))
+    glGenerateMipmap (GL_TEXTURE_2D);
+}
@@ -0,0 +1,86 @@
+#ifndef __GSK_GL_DRIVER_PRIVATE_H__
+#define __GSK_GL_DRIVER_PRIVATE_H__
+
+#include <cairo.h>
+#include <gdk/gdk.h>
+#include <graphene.h>
+
+G_BEGIN_DECLS
+
+#define GSK_TYPE_GL_DRIVER (gsk_gl_driver_get_type ())
+
+G_DECLARE_FINAL_TYPE (GskGLDriver, gsk_gl_driver, GSK, GL_DRIVER, GObject)
+
+typedef struct {
+  float position[2];
+  float uv[2];
+} GskQuadVertex;
+
+typedef struct {
+  cairo_rectangle_int_t rect;
+  guint texture_id;
+} TextureSlice;
+
+typedef struct {
+  gpointer pointer;
+  float scale_x;
+  float scale_y;
+  int filter;
+  int pointer_is_child;
+  graphene_rect_t parent_rect; /* Only set if pointer_is_child */
+} GskTextureKey;
+
+GskGLDriver *   gsk_gl_driver_new                       (GdkGLContext    *context);
+GdkGLContext   *gsk_gl_driver_get_gl_context            (GskGLDriver     *driver);
+
+int             gsk_gl_driver_get_max_texture_size      (GskGLDriver     *driver);
+
+void            gsk_gl_driver_begin_frame               (GskGLDriver     *driver);
+void            gsk_gl_driver_end_frame                 (GskGLDriver     *driver);
+gboolean        gsk_gl_driver_in_frame                  (GskGLDriver     *driver);
+int             gsk_gl_driver_get_texture_for_texture   (GskGLDriver     *driver,
+                                                         GdkTexture      *texture,
+                                                         int              min_filter,
+                                                         int              mag_filter);
+int             gsk_gl_driver_get_texture_for_key       (GskGLDriver     *driver,
+                                                         GskTextureKey   *key);
+void            gsk_gl_driver_set_texture_for_key       (GskGLDriver     *driver,
+                                                         GskTextureKey   *key,
+                                                         int              texture_id);
+int             gsk_gl_driver_create_texture            (GskGLDriver     *driver,
+                                                         float            width,
+                                                         float            height);
+void            gsk_gl_driver_create_render_target      (GskGLDriver     *driver,
+                                                         int              width,
+                                                         int              height,
+                                                         int              min_filter,
+                                                         int              mag_filter,
+                                                         int             *out_texture_id,
+                                                         int             *out_render_target_id);
+void            gsk_gl_driver_mark_texture_permanent    (GskGLDriver     *self,
+                                                         int              texture_id);
+void            gsk_gl_driver_bind_source_texture       (GskGLDriver     *driver,
+                                                         int              texture_id);
+
+void            gsk_gl_driver_init_texture_empty        (GskGLDriver     *driver,
+                                                         int              texture_id,
+                                                         int              min_filter,
+                                                         int              max_filter);
+void            gsk_gl_driver_init_texture              (GskGLDriver     *driver,
+                                                         int              texture_id,
+                                                         GdkTexture      *texture,
+                                                         int              min_filter,
+                                                         int              mag_filter);
+
+void            gsk_gl_driver_destroy_texture           (GskGLDriver     *driver,
+                                                         int              texture_id);
+
+int             gsk_gl_driver_collect_textures          (GskGLDriver     *driver);
+void            gsk_gl_driver_slice_texture             (GskGLDriver     *self,
+                                                         GdkTexture      *texture,
+                                                         TextureSlice   **out_slices,
+                                                         guint           *out_n_slices);
+
+G_END_DECLS
+
+#endif /* __GSK_GL_DRIVER_PRIVATE_H__ */
@@ -0,0 +1,397 @@
+#include "config.h"
+
+#include "gskglglyphcacheprivate.h"
+#include "gskgldriverprivate.h"
+#include "gskdebugprivate.h"
+#include "gskprivate.h"
+#include "gskgltextureatlasprivate.h"
+
+#include "gdk/gdkglcontextprivate.h"
+#include "gdk/gdkmemorytextureprivate.h"
+
+#include <graphene.h>
+#include <cairo.h>
+#include <epoxy/gl.h>
+#include <string.h>
+
+/* Cache eviction strategy
+ *
+ * We mark glyphs as accessed every time we use them.
+ * Every few frames, we mark glyphs that haven't been
+ * accessed since the last check as old.
+ *
+ * We keep count of the pixels of each atlas that are
+ * taken up by old data. When the fraction of old pixels
+ * gets too high, we drop the atlas and all the items it
+ * contained.
+ *
+ * Big glyphs are not stored in the atlas, they get their
+ * own texture, but they are still cached.
+ */
+
+#define MAX_FRAME_AGE (60)
+#define MAX_GLYPH_SIZE 128 /* Will get its own texture if bigger */
+
+static guint    glyph_cache_hash       (gconstpointer v);
+static gboolean glyph_cache_equal      (gconstpointer v1,
+                                        gconstpointer v2);
+static void     glyph_cache_key_free   (gpointer      v);
+static void     glyph_cache_value_free (gpointer      v);
+
+GskGLGlyphCache *
+gsk_gl_glyph_cache_new (GdkDisplay *display,
+                        GskGLTextureAtlases *atlases)
+{
+  GskGLGlyphCache *glyph_cache;
+
+  glyph_cache = g_new0 (GskGLGlyphCache, 1);
+
+  glyph_cache->display = display;
+  glyph_cache->hash_table = g_hash_table_new_full (glyph_cache_hash, glyph_cache_equal,
+                                                   glyph_cache_key_free, glyph_cache_value_free);
+
+  glyph_cache->atlases = gsk_gl_texture_atlases_ref (atlases);
+
+  glyph_cache->ref_count = 1;
+
+  return glyph_cache;
+}
+
+GskGLGlyphCache *
+gsk_gl_glyph_cache_ref (GskGLGlyphCache *self)
+{
+  self->ref_count++;
+
+  return self;
+}
+
+void
+gsk_gl_glyph_cache_unref (GskGLGlyphCache *self)
+{
+  g_assert (self->ref_count > 0);
+
+  if (self->ref_count == 1)
+    {
+      gsk_gl_texture_atlases_unref (self->atlases);
+      g_hash_table_unref (self->hash_table);
+      g_free (self);
+      return;
+    }
+
+  self->ref_count--;
+}
+
+static gboolean
+glyph_cache_equal (gconstpointer v1, gconstpointer v2)
+{
+  return memcmp (v1, v2, sizeof (CacheKeyData)) == 0;
+}
+
+static guint
+glyph_cache_hash (gconstpointer v)
+{
+  const GlyphCacheKey *key = v;
+
+  return key->hash;
+}
+
+static void
+glyph_cache_key_free (gpointer v)
+{
+  GlyphCacheKey *f = v;
+
+  g_object_unref (f->data.font);
+  g_free (f);
+}
+
+static void
+glyph_cache_value_free (gpointer v)
+{
+  g_free (v);
+}
+
+static gboolean
+render_glyph (GlyphCacheKey    *key,
+              GskGLCachedGlyph *value,
+              GskImageRegion   *region)
+{
+  cairo_surface_t *surface;
+  cairo_t *cr;
+  cairo_scaled_font_t *scaled_font;
+  PangoGlyphString glyph_string;
+  PangoGlyphInfo glyph_info;
+  int surface_width, surface_height;
+  int stride;
+  unsigned char *data;
+
+  scaled_font = pango_cairo_font_get_scaled_font ((PangoCairoFont *)key->data.font);
+  if (G_UNLIKELY (!scaled_font || cairo_scaled_font_status (scaled_font) != CAIRO_STATUS_SUCCESS))
+    {
+      g_warning ("Failed to get a font");
+      return FALSE;
+    }
+
+  surface_width = value->draw_width * key->data.scale / 1024;
+  surface_height = value->draw_height * key->data.scale / 1024;
+
+  stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32, surface_width);
+  data = g_malloc0 (stride * surface_height);
+  surface = cairo_image_surface_create_for_data (data, CAIRO_FORMAT_ARGB32,
+                                                 surface_width, surface_height,
+                                                 stride);
+  cairo_surface_set_device_scale (surface, key->data.scale / 1024.0, key->data.scale / 1024.0);
+
+  cr = cairo_create (surface);
+
+  cairo_set_scaled_font (cr, scaled_font);
+  cairo_set_source_rgba (cr, 1, 1, 1, 1);
+
+  glyph_info.glyph = key->data.glyph;
+  glyph_info.geometry.width = value->draw_width * 1024;
+  if (glyph_info.glyph & PANGO_GLYPH_UNKNOWN_FLAG)
+    glyph_info.geometry.x_offset = 256 * key->data.xshift;
+  else
+    glyph_info.geometry.x_offset = 256 * key->data.xshift - value->draw_x * 1024;
+  glyph_info.geometry.y_offset = 256 * key->data.yshift - value->draw_y * 1024;
+
+  glyph_string.num_glyphs = 1;
+  glyph_string.glyphs = &glyph_info;
+
+  pango_cairo_show_glyph_string (cr, key->data.font, &glyph_string);
+  cairo_destroy (cr);
+
+  cairo_surface_flush (surface);
+
+  region->width = cairo_image_surface_get_width (surface);
+  region->height = cairo_image_surface_get_height (surface);
+  region->stride = cairo_image_surface_get_stride (surface);
+  region->data = data;
+  if (value->atlas)
+    {
+      region->x = (gsize)(value->tx * value->atlas->width);
+      region->y = (gsize)(value->ty * value->atlas->height);
+    }
+  else
+    {
+      region->x = 0;
+      region->y = 0;
+    }
+
+  cairo_surface_destroy (surface);
+
+  return TRUE;
+}
+
+static void
+upload_glyph (GlyphCacheKey    *key,
+              GskGLCachedGlyph *value)
+{
+  GskImageRegion r;
+  guchar *pixel_data;
+  guchar *free_data = NULL;
+  guint gl_format;
+  guint gl_type;
+
+  gdk_gl_context_push_debug_group_printf (gdk_gl_context_get_current (),
+                                          "Uploading glyph %d",
+                                          key->data.glyph);
+
+  if (render_glyph (key, value, &r))
+    {
+      glPixelStorei (GL_UNPACK_ROW_LENGTH, r.stride / 4);
+      glBindTexture (GL_TEXTURE_2D, value->texture_id);
+
+      if (gdk_gl_context_get_use_es (gdk_gl_context_get_current ()))
+        {
+          pixel_data = free_data = g_malloc (r.width * r.height * 4);
+          gdk_memory_convert (pixel_data, r.width * 4,
+                              GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
+                              r.data, r.width * 4,
+                              GDK_MEMORY_DEFAULT, r.width, r.height);
+          gl_format = GL_RGBA;
+          gl_type = GL_UNSIGNED_BYTE;
+        }
+      else
+        {
+          pixel_data = r.data;
+          gl_format = GL_BGRA;
+          gl_type = GL_UNSIGNED_INT_8_8_8_8_REV;
+        }
+
+      glTexSubImage2D (GL_TEXTURE_2D, 0, r.x, r.y, r.width, r.height,
+                       gl_format, gl_type, pixel_data);
+      glPixelStorei (GL_UNPACK_ROW_LENGTH, 0);
+      g_free (r.data);
+      g_free (free_data);
+    }
+
+  gdk_gl_context_pop_debug_group (gdk_gl_context_get_current ());
+}
+
+static void
+add_to_cache (GskGLGlyphCache  *self,
+              GlyphCacheKey    *key,
+              GskGLDriver      *driver,
+              GskGLCachedGlyph *value)
+{
+  const int width = value->draw_width * key->data.scale / 1024;
+  const int height = value->draw_height * key->data.scale / 1024;
+
+  if (width < MAX_GLYPH_SIZE && height < MAX_GLYPH_SIZE)
+    {
+      GskGLTextureAtlas *atlas = NULL;
+      int packed_x = 0;
+      int packed_y = 0;
+
+      gsk_gl_texture_atlases_pack (self->atlases, width + 2, height + 2, &atlas, &packed_x, &packed_y);
+
+      value->tx = (float)(packed_x + 1) / atlas->width;
+      value->ty = (float)(packed_y + 1) / atlas->height;
+      value->tw = (float)width / atlas->width;
+      value->th = (float)height / atlas->height;
+      value->used = TRUE;
+
+      value->atlas = atlas;
+      value->texture_id = atlas->texture_id;
+    }
+  else
+    {
+      value->atlas = NULL;
+      value->texture_id = gsk_gl_driver_create_texture (driver, width, height);
+      gsk_gl_driver_mark_texture_permanent (driver, value->texture_id);
+
+      gsk_gl_driver_bind_source_texture (driver, value->texture_id);
+      gsk_gl_driver_init_texture_empty (driver, value->texture_id, GL_LINEAR, GL_LINEAR);
+
+      value->tx = 0.0f;
+      value->ty = 0.0f;
+      value->tw = 1.0f;
+      value->th = 1.0f;
+    }
+
+  upload_glyph (key, value);
+}
+
+void
+gsk_gl_glyph_cache_lookup_or_add (GskGLGlyphCache         *cache,
+                                  GlyphCacheKey           *lookup,
+                                  GskGLDriver             *driver,
+                                  const GskGLCachedGlyph **cached_glyph_out)
+{
+  GskGLCachedGlyph *value;
+
+  value = g_hash_table_lookup (cache->hash_table, lookup);
+
+  if (value)
+    {
+      if (value->atlas && !value->used)
+        {
+          gsk_gl_texture_atlas_mark_used (value->atlas, value->draw_width, value->draw_height);
+          value->used = TRUE;
+        }
+      value->accessed = TRUE;
+
+      *cached_glyph_out = value;
+      return;
+    }
+
+  {
+    GlyphCacheKey *key;
+    PangoRectangle ink_rect;
+
+    pango_font_get_glyph_extents (lookup->data.font, lookup->data.glyph, &ink_rect, NULL);
+    pango_extents_to_pixels (&ink_rect, NULL);
+    if (lookup->data.xshift != 0)
+      ink_rect.width += 1;
+    if (lookup->data.yshift != 0)
+      ink_rect.height += 1;
+
+    value = g_new0 (GskGLCachedGlyph, 1);
+
+    value->draw_x = ink_rect.x;
+    value->draw_y = ink_rect.y;
+    value->draw_width = ink_rect.width;
+    value->draw_height = ink_rect.height;
+    value->accessed = TRUE;
+    value->atlas = NULL; /* For now */
+
+    key = g_new0 (GlyphCacheKey, 1);
+
+    key->data.font = g_object_ref (lookup->data.font);
+    key->data.glyph = lookup->data.glyph;
+    key->data.xshift = lookup->data.xshift;
+    key->data.yshift = lookup->data.yshift;
+    key->data.scale = lookup->data.scale;
+    key->hash = lookup->hash;
+
+    if (key->data.scale > 0 &&
+        value->draw_width * key->data.scale / 1024 > 0 &&
+        value->draw_height * key->data.scale / 1024 > 0)
+      add_to_cache (cache, key, driver, value);
+
+    *cached_glyph_out = value;
+    g_hash_table_insert (cache->hash_table, key, value);
+  }
+}
+
+void
+gsk_gl_glyph_cache_begin_frame (GskGLGlyphCache *self,
+                                GskGLDriver     *driver,
+                                GPtrArray       *removed_atlases)
+{
+  GHashTableIter iter;
+  GlyphCacheKey *key;
+  GskGLCachedGlyph *value;
+  guint dropped = 0;
+
+  self->timestamp++;
+
+  if (removed_atlases->len > 0)
+    {
+      g_hash_table_iter_init (&iter, self->hash_table);
+      while (g_hash_table_iter_next (&iter, (gpointer *)&key, (gpointer *)&value))
+        {
+          if (g_ptr_array_find (removed_atlases, value->atlas, NULL))
+            {
+              g_hash_table_iter_remove (&iter);
+              dropped++;
+            }
+        }
+    }
+
+  if (self->timestamp % MAX_FRAME_AGE == 30)
+    {
+      g_hash_table_iter_init (&iter, self->hash_table);
+      while (g_hash_table_iter_next (&iter, (gpointer *)&key, (gpointer *)&value))
+        {
+          if (!value->accessed)
+            {
+              if (value->atlas)
+                {
+                  if (value->used)
+                    {
+                      gsk_gl_texture_atlas_mark_unused (value->atlas, value->draw_width, value->draw_height);
+                      value->used = FALSE;
+                    }
+                }
+              else
+                {
+                  gsk_gl_driver_destroy_texture (driver, value->texture_id);
+                  g_hash_table_iter_remove (&iter);
+
+                  /* Sadly, if we drop an atlas-less cached glyph, we
+                   * have to treat it like a dropped atlas and purge
+                   * text node render data.
+                   */
+                  dropped++;
+                }
+            }
+          else
+            value->accessed = FALSE;
+       }
+
+      GSK_NOTE(GLYPH_CACHE, g_message ("%d glyphs cached", g_hash_table_size (self->hash_table)));
+    }
+
+  GSK_NOTE(GLYPH_CACHE, if (dropped > 0) g_message ("Dropped %d glyphs", dropped));
+}
@@ -0,0 +1,92 @@
+#ifndef __GSK_GL_GLYPH_CACHE_PRIVATE_H__
+#define __GSK_GL_GLYPH_CACHE_PRIVATE_H__
+
+#include "gskgldriverprivate.h"
+#include "gskglimageprivate.h"
+#include "gskgltextureatlasprivate.h"
+#include <pango/pango.h>
+#include <gdk/gdk.h>
+
+typedef struct
+{
+  int ref_count;
+
+  GdkDisplay *display;
+  GHashTable *hash_table;
+  GskGLTextureAtlases *atlases;
+
+  int timestamp;
+} GskGLGlyphCache;
+
+struct _CacheKeyData
+{
+  PangoFont *font;
+  PangoGlyph glyph;
+  guint xshift : 3;
+  guint yshift : 3;
+  guint scale  : 26; /* times 1024 */
+};
+
+typedef struct _CacheKeyData CacheKeyData;
+
+struct _GlyphCacheKey
+{
+  CacheKeyData data;
+  guint hash;
+};
+
+typedef struct _GlyphCacheKey GlyphCacheKey;
+
+#define PHASE(x) ((int)(floor (4 * (x + 0.125)) - 4 * floor (x + 0.125)))
+
+static inline void
+glyph_cache_key_set_glyph_and_shift (GlyphCacheKey *key,
+                                     PangoGlyph glyph,
+                                     float x,
+                                     float y)
+{
+  key->data.glyph = glyph;
+  key->data.xshift = PHASE (x);
+  key->data.yshift = PHASE (y);
+  key->hash = GPOINTER_TO_UINT (key->data.font) ^
+              key->data.glyph ^
+              (key->data.xshift << 24) ^
+              (key->data.yshift << 26) ^
+              key->data.scale;
+}
+
+typedef struct _GskGLCachedGlyph GskGLCachedGlyph;
+
+struct _GskGLCachedGlyph
+{
+  GskGLTextureAtlas *atlas;
+  guint texture_id;
+
+  float tx;
+  float ty;
+  float tw;
+  float th;
+
+  int draw_x;
+  int draw_y;
+  int draw_width;
+  int draw_height;
+
+  guint accessed : 1; /* accessed since last check */
+  guint used     : 1; /* accounted as used in the atlas */
+};
+
+
+GskGLGlyphCache *        gsk_gl_glyph_cache_new             (GdkDisplay *display,
+                                                             GskGLTextureAtlases *atlases);
+GskGLGlyphCache *        gsk_gl_glyph_cache_ref             (GskGLGlyphCache *self);
+void                     gsk_gl_glyph_cache_unref           (GskGLGlyphCache        *self);
+void                     gsk_gl_glyph_cache_begin_frame     (GskGLGlyphCache        *self,
+                                                             GskGLDriver            *driver,
+                                                             GPtrArray              *removed_atlases);
+void                     gsk_gl_glyph_cache_lookup_or_add   (GskGLGlyphCache        *self,
+                                                             GlyphCacheKey          *lookup,
+                                                             GskGLDriver            *driver,
+                                                             const GskGLCachedGlyph **cached_glyph_out);
+
+#endif
@@ -0,0 +1,275 @@
+#include "gskgliconcacheprivate.h"
+#include "gskgltextureatlasprivate.h"
+#include "gdk/gdktextureprivate.h"
+#include "gdk/gdkmemorytextureprivate.h"
+#include "gdk/gdkglcontextprivate.h"
+
+#include <epoxy/gl.h>
+
+#define MAX_FRAME_AGE 60
+
+static void
+icon_data_free (gpointer p)
+{
+  g_object_unref (((IconData *)p)->source_texture);
+  g_free (p);
+}
+
+GskGLIconCache *
+gsk_gl_icon_cache_new (GdkDisplay *display,
+                       GskGLTextureAtlases *atlases)
+{
+  GskGLIconCache *self;
+
+  self = g_new0 (GskGLIconCache, 1);
+
+  self->display = display;
+  self->icons = g_hash_table_new_full (NULL, NULL, NULL, icon_data_free);
+  self->atlases = gsk_gl_texture_atlases_ref (atlases);
+  self->ref_count = 1;
+
+  return self;
+}
+
+GskGLIconCache *
+gsk_gl_icon_cache_ref (GskGLIconCache *self)
+{
+  self->ref_count++;
+
+  return self;
+}
+
+void
+gsk_gl_icon_cache_unref (GskGLIconCache *self)
+{
+  g_assert (self->ref_count > 0);
+
+  if (self->ref_count == 1)
+    {
+      gsk_gl_texture_atlases_unref (self->atlases);
+      g_hash_table_unref (self->icons);
+      g_free (self);
+      return;
+    }
+
+  self->ref_count--;
+}
+
+void
+gsk_gl_icon_cache_begin_frame (GskGLIconCache *self,
+                               GPtrArray      *removed_atlases)
+{
+  GHashTableIter iter;
+  GdkTexture *texture;
+  IconData *icon_data;
+
+  self->timestamp++;
+
+  /* Drop icons on removed atlases */
+  if (removed_atlases->len > 0)
+    {
+      guint dropped = 0;
+
+      g_hash_table_iter_init (&iter, self->icons);
+      while (g_hash_table_iter_next (&iter, (gpointer *)&texture, (gpointer *)&icon_data))
+        {
+          if (g_ptr_array_find (removed_atlases, icon_data->atlas, NULL))
+            {
+              g_hash_table_iter_remove (&iter);
+              dropped++;
+            }
+        }
+
+      GSK_NOTE(GLYPH_CACHE, if (dropped > 0) g_message ("Dropped %d icons", dropped));
+    }
+
+  if (self->timestamp % MAX_FRAME_AGE == 0)
+    {
+      g_hash_table_iter_init (&iter, self->icons);
+      while (g_hash_table_iter_next (&iter, (gpointer *)&texture, (gpointer *)&icon_data))
+        {
+          if (!icon_data->accessed)
+            {
+              if (icon_data->used)
+                { 
+                  const int width = icon_data->source_texture->width;
+                  const int height = icon_data->source_texture->height;
+                  gsk_gl_texture_atlas_mark_unused (icon_data->atlas, width + 2, height + 2);
+                  icon_data->used = FALSE;
+                }
+            }
+
+          icon_data->accessed = FALSE;
+        }
+
+      GSK_NOTE(GLYPH_CACHE, g_message ("%d icons cached", g_hash_table_size (self->icons)));
+    }
+}
+
+void
+gsk_gl_icon_cache_lookup_or_add (GskGLIconCache  *self,
+                                 GdkTexture      *texture,
+                                 const IconData **out_icon_data)
+{
+  IconData *icon_data = g_hash_table_lookup (self->icons, texture);
+
+  if (icon_data)
+    {
+      if (!icon_data->used)
+        {
+          gsk_gl_texture_atlas_mark_used (icon_data->atlas, texture->width + 2, texture->height + 2);
+          icon_data->used = TRUE;
+        }
+      icon_data->accessed = TRUE;
+
+      *out_icon_data = icon_data;
+      return;
+    }
+
+  /* texture not on any atlas yet. Find a suitable one. */
+  {
+    const int width = texture->width;
+    const int height = texture->height;
+    GskGLTextureAtlas *atlas = NULL;
+    int packed_x = 0;
+    int packed_y = 0;
+    cairo_surface_t *surface;
+    unsigned char *surface_data;
+    unsigned char *pixel_data;
+    guchar *free_data = NULL;
+    guint gl_format;
+    guint gl_type;
+
+    gsk_gl_texture_atlases_pack (self->atlases, width + 2, height + 2, &atlas, &packed_x, &packed_y);
+
+    icon_data = g_new0 (IconData, 1);
+    icon_data->atlas = atlas;
+    icon_data->accessed = TRUE;
+    icon_data->used = TRUE;
+    icon_data->texture_id = atlas->texture_id;
+    icon_data->source_texture = g_object_ref (texture);
+    icon_data->x = (float)(packed_x + 1) / atlas->width;
+    icon_data->y = (float)(packed_y + 1) / atlas->width;
+    icon_data->x2 = icon_data->x + (float)width / atlas->width;
+    icon_data->y2 = icon_data->y + (float)height / atlas->height;
+
+    g_hash_table_insert (self->icons, texture, icon_data);
+
+    /* actually upload the texture */
+    surface = gdk_texture_download_surface (texture);
+    surface_data = cairo_image_surface_get_data (surface);
+    gdk_gl_context_push_debug_group_printf (gdk_gl_context_get_current (),
+                                            "Uploading texture");
+
+    if (gdk_gl_context_get_use_es (gdk_gl_context_get_current ()))
+      {
+        pixel_data = free_data = g_malloc (width * height * 4);
+        gdk_memory_convert (pixel_data, width * 4,
+                            GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
+                            surface_data, cairo_image_surface_get_stride (surface),
+                            GDK_MEMORY_DEFAULT, width, height);
+        gl_format = GL_RGBA;
+        gl_type = GL_UNSIGNED_BYTE;
+      }
+    else
+      {
+        pixel_data = surface_data;
+        gl_format = GL_BGRA;
+        gl_type = GL_UNSIGNED_INT_8_8_8_8_REV;
+      }
+
+    glBindTexture (GL_TEXTURE_2D, atlas->texture_id);
+
+    glTexSubImage2D (GL_TEXTURE_2D, 0,
+                     packed_x + 1, packed_y + 1,
+                     width, height,
+                     gl_format, gl_type,
+                     pixel_data);
+    /* Padding top */
+    glTexSubImage2D (GL_TEXTURE_2D, 0,
+                     packed_x + 1, packed_y,
+                     width, 1,
+                     gl_format, gl_type,
+                     pixel_data);
+    /* Padding left */
+    glTexSubImage2D (GL_TEXTURE_2D, 0,
+                     packed_x, packed_y + 1,
+                     1, height,
+                     gl_format, gl_type,
+                     pixel_data);
+    /* Padding top left */
+    glTexSubImage2D (GL_TEXTURE_2D, 0,
+                     packed_x, packed_y,
+                     1, 1,
+                     gl_format, gl_type,
+                     pixel_data);
+
+    /* Padding right */
+    glPixelStorei (GL_UNPACK_ROW_LENGTH, width);
+    glPixelStorei (GL_UNPACK_SKIP_PIXELS, width - 1);
+    glTexSubImage2D (GL_TEXTURE_2D, 0,
+                     packed_x + width + 1, packed_y + 1,
+                     1, height,
+                     gl_format, gl_type,
+                     pixel_data);
+    /* Padding top right */
+    glTexSubImage2D (GL_TEXTURE_2D, 0,
+                     packed_x + width + 1, packed_y,
+                     1, 1,
+                     gl_format, gl_type,
+                     pixel_data);
+    /* Padding bottom */
+    glPixelStorei (GL_UNPACK_SKIP_PIXELS, 0);
+    glPixelStorei (GL_UNPACK_ROW_LENGTH, 0);
+    glPixelStorei (GL_UNPACK_SKIP_ROWS, height - 1);
+    glTexSubImage2D (GL_TEXTURE_2D, 0,
+                     packed_x + 1, packed_y + 1 + height,
+                     width, 1,
+                     gl_format, gl_type,
+                     pixel_data);
+    /* Padding bottom left */
+    glTexSubImage2D (GL_TEXTURE_2D, 0,
+                     packed_x, packed_y + 1 + height,
+                     1, 1,
+                     gl_format, gl_type,
+                     pixel_data);
+    /* Padding bottom right */
+    glPixelStorei (GL_UNPACK_ROW_LENGTH, width);
+    glPixelStorei (GL_UNPACK_SKIP_PIXELS, width - 1);
+    glTexSubImage2D (GL_TEXTURE_2D, 0,
+                     packed_x + 1 + width, packed_y + 1 + height,
+                     1, 1,
+                     gl_format, gl_type,
+                     pixel_data);
+    /* Reset this */
+    glPixelStorei (GL_UNPACK_SKIP_PIXELS, 0);
+    glPixelStorei (GL_UNPACK_ROW_LENGTH, 0);
+    glPixelStorei (GL_UNPACK_SKIP_ROWS, 0);
+
+    gdk_gl_context_pop_debug_group (gdk_gl_context_get_current ());
+
+    *out_icon_data = icon_data;
+
+    cairo_surface_destroy (surface);
+    g_free (free_data);
+
+#if 0
+    {
+      static int k;
+      const int stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32, atlas->width);
+      guchar *data = g_malloc (atlas->height * stride);
+      cairo_surface_t *s;
+      char *filename = g_strdup_printf ("atlas_%u_%d.png", atlas->texture_id, k++);
+
+      glBindTexture (GL_TEXTURE_2D, atlas->texture_id);
+      glGetTexImage (GL_TEXTURE_2D, 0, GL_BGRA, GL_UNSIGNED_BYTE, data);
+      s = cairo_image_surface_create_for_data (data, CAIRO_FORMAT_ARGB32, atlas->width, atlas->height, stride);
+      cairo_surface_write_to_png (s, filename);
+
+      cairo_surface_destroy (s);
+      g_free (data);
+      g_free (filename);
+    }
+#endif
+  }
+}
@@ -0,0 +1,44 @@
+#ifndef __GSK_GL_ICON_CACHE_PRIVATE_H__
+#define __GSK_GL_ICON_CACHE_PRIVATE_H__
+
+#include "gskgldriverprivate.h"
+#include "gskglimageprivate.h"
+#include "gskrendererprivate.h"
+#include "gskgltextureatlasprivate.h"
+#include <pango/pango.h>
+#include <gdk/gdk.h>
+
+typedef struct
+{
+  int ref_count;
+
+  GdkDisplay *display;
+  GskGLDriver *gl_driver;
+
+  GskGLTextureAtlases *atlases;
+  GHashTable *icons; /* GdkTexture -> IconData */
+
+  int timestamp;
+} GskGLIconCache;
+
+typedef struct
+{
+  float x, y, x2, y2;
+  GskGLTextureAtlas *atlas;
+  guint used     : 1;
+  guint accessed : 1;
+  int texture_id;
+  GdkTexture *source_texture;
+} IconData;
+
+GskGLIconCache * gsk_gl_icon_cache_new            (GdkDisplay *display,
+                                                   GskGLTextureAtlases *atlases);
+GskGLIconCache * gsk_gl_icon_cache_ref            (GskGLIconCache        *self);
+void             gsk_gl_icon_cache_unref          (GskGLIconCache        *self);
+void             gsk_gl_icon_cache_begin_frame    (GskGLIconCache        *self,
+                                                   GPtrArray             *removed_atlases);
+void             gsk_gl_icon_cache_lookup_or_add  (GskGLIconCache        *self,
+                                                   GdkTexture            *texture,
+                                                   const IconData       **out_icon_data);
+
+#endif
@@ -0,0 +1,64 @@
+
+#include "gskglimageprivate.h"
+#include <epoxy/gl.h>
+
+void
+gsk_gl_image_create (GskGLImage  *self,
+                     GskGLDriver *gl_driver,
+                     int          width,
+                     int          height,
+                     int          min_filter,
+                     int          mag_filter)
+{
+  self->texture_id = gsk_gl_driver_create_texture (gl_driver, width, height);
+  self->width = width;
+  self->height = height;
+
+  gsk_gl_driver_bind_source_texture (gl_driver, self->texture_id);
+  gsk_gl_driver_init_texture_empty (gl_driver, self->texture_id, min_filter, mag_filter);
+  gsk_gl_driver_mark_texture_permanent (gl_driver, self->texture_id);
+}
+
+void
+gsk_gl_image_destroy (GskGLImage  *self,
+                      GskGLDriver *gl_driver)
+{
+  gsk_gl_driver_destroy_texture (gl_driver, self->texture_id);
+  self->texture_id = 0;
+}
+
+void
+gsk_gl_image_write_to_png (const GskGLImage *self,
+                           GskGLDriver      *gl_driver,
+                           const char       *filename)
+{
+  int stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32, self->width);
+  guchar *data = g_malloc (self->height * stride);
+  cairo_surface_t *s;
+
+  gsk_gl_driver_bind_source_texture (gl_driver, self->texture_id);
+  glGetTexImage (GL_TEXTURE_2D, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, data);
+  s = cairo_image_surface_create_for_data (data, CAIRO_FORMAT_ARGB32, self->width, self->height, stride);
+  cairo_surface_write_to_png (s, filename);
+
+  cairo_surface_destroy (s);
+  g_free (data);
+}
+
+void
+gsk_gl_image_upload_region (GskGLImage           *self,
+                            GskGLDriver          *gl_driver,
+                            const GskImageRegion *region)
+{
+  gsk_gl_driver_bind_source_texture (gl_driver, self->texture_id);
+  glBindTexture (GL_TEXTURE_2D, self->texture_id);
+
+  glTexSubImage2D (GL_TEXTURE_2D, 0, region->x, region->y, region->width, region->height,
+                   GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, region->data);
+
+#ifdef G_ENABLE_DEBUG
+  /*gsk_gl_driver_bind_source_texture (gl_driver, self->texture_id);*/
+  /*gsk_gl_image_dump (self, gl_driver, "/home/baedert/atlases/test_dump.png");*/
+#endif
+}
+
@@ -0,0 +1,41 @@
+#ifndef __GSK_GL_IMAGE_H__
+#define __GSK_GL_IMAGE_H__
+
+#include "gskgldriverprivate.h"
+#include <cairo.h>
+
+typedef struct
+{
+  guint texture_id;
+  int width;
+  int height;
+} GskGLImage;
+
+typedef struct
+{
+  guchar *data;
+  gsize width;
+  gsize height;
+  gsize stride;
+  gsize x;
+  gsize y;
+} GskImageRegion;
+
+void gsk_gl_image_create         (GskGLImage           *self,
+                                  GskGLDriver          *gl_driver,
+                                  int                   width,
+                                  int                   height,
+                                  int                   min_filter,
+                                  int                   mag_filter);
+void gsk_gl_image_destroy        (GskGLImage           *self,
+                                  GskGLDriver          *gl_driver);
+void gsk_gl_image_write_to_png   (const GskGLImage     *self,
+                                  GskGLDriver          *gl_driver,
+                                  const char           *filename);
+void gsk_gl_image_upload_region  (GskGLImage           *self,
+                                  GskGLDriver          *gl_driver,
+                                  const GskImageRegion *region);
+
+
+#endif
+
@@ -0,0 +1,51 @@
+
+#include <glib/gprintf.h>
+#include "gskglnodesampleprivate.h"
+#include "gskrendernodeprivate.h"
+
+void
+node_sample_init (NodeSample *self)
+{
+  memset (self->nodes, 0, sizeof (self->nodes));
+  self->count = 0;
+}
+
+void
+node_sample_reset (NodeSample *self)
+{
+  node_sample_init (self);
+}
+
+void
+node_sample_add (NodeSample    *self,
+                 GskRenderNode *node)
+{
+  const guint node_type = gsk_render_node_get_node_type (node);
+
+  g_assert (node_type <= N_NODE_TYPES);
+
+  if (self->nodes[node_type].class_name == NULL)
+    self->nodes[node_type].class_name = g_type_name_from_instance ((GTypeInstance *) node); 
+
+  self->nodes[node_type].count ++;
+  self->count ++;
+}
+
+void
+node_sample_print (const NodeSample *self,
+                   const char       *prefix)
+{
+  guint i;
+
+  g_printf ("%s:\n", prefix);
+
+  for (i = 0; i < N_NODE_TYPES; i ++)
+    {
+      if (self->nodes[i].count > 0)
+        {
+          double p = (double)self->nodes[i].count / (double)self->count;
+
+          g_printf ("%s: %u (%.2f%%)\n", self->nodes[i].class_name, self->nodes[i].count, p * 100.0);
+        }
+    }
+}
@@ -0,0 +1,28 @@
+
+#ifndef __GSK_GL_NODE_SAMPLE_PRIVATE_H__
+#define __GSK_GL_NODE_SAMPLE_PRIVATE_H__
+
+#include <glib.h>
+#include "gskenums.h"
+#include "gskrendernode.h"
+
+/* TODO: We have no other way for this...? */
+#define N_NODE_TYPES (GSK_DEBUG_NODE + 1)
+
+typedef struct
+{
+  struct {
+    const char *class_name;
+    guint count;
+  } nodes[N_NODE_TYPES];
+  guint count;
+} NodeSample;
+
+void node_sample_init  (NodeSample       *self);
+void node_sample_reset (NodeSample       *self);
+void node_sample_add   (NodeSample       *self,
+                        GskRenderNode    *node);
+void node_sample_print (const NodeSample *self,
+                        const char       *prefix);
+
+#endif
@@ -0,0 +1,52 @@
+/*
+ * Copyright © 2016  Endless 
+ *             2018  Timm Bäder <mail@baedert.org>
+ *
+ * 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: Timm Bäder <mail@baedert.org>
+ */
+
+#ifndef __GSK_GL_RENDERER_H__
+#define __GSK_GL_RENDERER_H__
+
+#include <gsk/gskrenderer.h>
+
+G_BEGIN_DECLS
+
+#define GSK_TYPE_GL_RENDERER (gsk_gl_renderer_get_type ())
+
+#define GSK_GL_RENDERER(obj)                    (G_TYPE_CHECK_INSTANCE_CAST ((obj), GSK_TYPE_GL_RENDERER, GskGLRenderer))
+#define GSK_IS_GL_RENDERER(obj)                 (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GSK_TYPE_GL_RENDERER))
+#define GSK_GL_RENDERER_CLASS(klass)            (G_TYPE_CHECK_CLASS_CAST ((klass), GSK_TYPE_GL_RENDERER, GskGLRendererClass))
+#define GSK_IS_GL_RENDERER_CLASS(klass)         (G_TYPE_CHECK_CLASS_TYPE ((klass), GSK_TYPE_GL_RENDERER))
+#define GSK_GL_RENDERER_GET_CLASS(obj)          (G_TYPE_INSTANCE_GET_CLASS ((obj), GSK_TYPE_GL_RENDERER, GskGLRendererClass))
+
+/**
+ * GskGLRenderer:
+ *
+ * A GSK renderer that is using OpenGL.
+ */
+typedef struct _GskGLRenderer                   GskGLRenderer;
+typedef struct _GskGLRendererClass              GskGLRendererClass;
+
+GDK_AVAILABLE_IN_ALL
+GType                   gsk_gl_renderer_get_type                (void) G_GNUC_CONST;
+
+GDK_AVAILABLE_IN_ALL
+GskRenderer *           gsk_gl_renderer_new                     (void);
+
+G_END_DECLS
+
+#endif /* __GSK_GL_RENDERER_H__ */
@@ -0,0 +1,14 @@
+#ifndef __GSK_GL_RENDERER_PRIVATE_H__
+#define __GSK_GL_RENDERER_PRIVATE_H__
+
+#include "gskglrenderer.h"
+
+G_BEGIN_DECLS
+
+gboolean gsk_gl_renderer_try_compile_gl_shader (GskGLRenderer    *self,
+                                                GskGLShader      *shader,
+                                                GError          **error);
+
+G_END_DECLS
+
+#endif /* __GSK_GL_RENDERER_PRIVATE_H__ */
@@ -0,0 +1,976 @@
+#include "gskglrenderopsprivate.h"
+#include "gsktransform.h"
+
+typedef struct
+{
+  GskRoundedRect rect;
+  bool is_rectilinear;
+} ClipStackEntry;
+
+static inline gboolean
+rect_equal (const graphene_rect_t *a,
+            const graphene_rect_t *b)
+{
+  return memcmp (a, b, sizeof (graphene_rect_t)) == 0;
+}
+
+static inline bool G_GNUC_PURE
+rounded_rect_equal (const GskRoundedRect *r1,
+                    const GskRoundedRect *r2)
+{
+  if (r1 == r2)
+      return true;
+
+  if (!r1)
+    return false;
+
+  if (r1->bounds.origin.x != r2->bounds.origin.x ||
+      r1->bounds.origin.y != r2->bounds.origin.y ||
+      r1->bounds.size.width != r2->bounds.size.width ||
+      r1->bounds.size.height != r2->bounds.size.height)
+    return false;
+
+  for (int i = 0; i < 4; i ++)
+    if (r1->corner[i].width != r2->corner[i].width ||
+        r1->corner[i].height != r2->corner[i].height)
+      return false;
+
+  return true;
+}
+
+static inline gboolean G_GNUC_PURE
+rounded_rect_corners_equal (const GskRoundedRect *r1,
+                            const GskRoundedRect *r2)
+{
+  int i;
+
+  if (!r1)
+    return FALSE;
+
+  for (i = 0; i < 4; i ++)
+    if (r1->corner[i].width != r2->corner[i].width ||
+        r1->corner[i].height != r2->corner[i].height)
+      return FALSE;
+
+  return TRUE;
+}
+
+static inline ProgramState *
+get_current_program_state (RenderOpBuilder *builder)
+{
+  if (!builder->current_program)
+    return NULL;
+
+  return &builder->current_program->state;
+}
+
+void
+ops_finish (RenderOpBuilder *builder)
+{
+  if (builder->mv_stack)
+    g_array_free (builder->mv_stack, TRUE);
+  builder->mv_stack = NULL;
+
+  if (builder->clip_stack)
+    g_array_free (builder->clip_stack, TRUE);
+  builder->clip_stack = NULL;
+
+  builder->dx = 0;
+  builder->dy = 0;
+  builder->scale_x = 1;
+  builder->scale_y = 1;
+  builder->current_modelview = NULL;
+  builder->current_clip = NULL;
+  builder->clip_is_rectilinear = TRUE;
+  builder->current_render_target = 0;
+  builder->current_texture = 0;
+  builder->current_program = NULL;
+  graphene_matrix_init_identity (&builder->current_projection);
+  builder->current_viewport = GRAPHENE_RECT_INIT (0, 0, 0, 0);
+}
+
+/* Debugging only! */
+void
+ops_dump_framebuffer (RenderOpBuilder *builder,
+                      const char      *filename,
+                      int              width,
+                      int              height)
+{
+  OpDumpFrameBuffer *op;
+
+  op = ops_begin (builder, OP_DUMP_FRAMEBUFFER);
+  op->filename = g_strdup (filename);
+  op->width = width;
+  op->height = height;
+}
+
+void
+ops_push_debug_group (RenderOpBuilder *builder,
+                      const char      *text)
+{
+  OpDebugGroup *op;
+
+  op = ops_begin (builder, OP_PUSH_DEBUG_GROUP);
+  strncpy (op->text, text, sizeof(op->text) - 1);
+  op->text[sizeof(op->text) - 1] = 0; /* Ensure zero terminated */
+}
+
+void
+ops_pop_debug_group (RenderOpBuilder *builder)
+{
+  ops_begin (builder, OP_POP_DEBUG_GROUP);
+}
+
+static void
+extract_matrix_metadata (GskTransform      *transform,
+                         OpsMatrixMetadata *md)
+{
+  float dummy;
+
+  switch (gsk_transform_get_category (transform))
+    {
+    case GSK_TRANSFORM_CATEGORY_IDENTITY:
+    case GSK_TRANSFORM_CATEGORY_2D_TRANSLATE:
+      md->scale_x = 1;
+      md->scale_y = 1;
+    break;
+
+    case GSK_TRANSFORM_CATEGORY_2D_AFFINE:
+      gsk_transform_to_affine (transform,
+                               &md->scale_x, &md->scale_y,
+                               &dummy, &dummy);
+    break;
+
+    case GSK_TRANSFORM_CATEGORY_UNKNOWN:
+    case GSK_TRANSFORM_CATEGORY_ANY:
+    case GSK_TRANSFORM_CATEGORY_3D:
+    case GSK_TRANSFORM_CATEGORY_2D:
+      {
+        graphene_vec3_t col1;
+        graphene_vec3_t col2;
+        graphene_matrix_t m;
+
+        gsk_transform_to_matrix (transform, &m);
+
+        /* TODO: 90% sure this is incorrect. But we should never hit this code
+         * path anyway. */
+        graphene_vec3_init (&col1,
+                            graphene_matrix_get_value (&m, 0, 0),
+                            graphene_matrix_get_value (&m, 1, 0),
+                            graphene_matrix_get_value (&m, 2, 0));
+
+        graphene_vec3_init (&col2,
+                            graphene_matrix_get_value (&m, 0, 1),
+                            graphene_matrix_get_value (&m, 1, 1),
+                            graphene_matrix_get_value (&m, 2, 1));
+
+        md->scale_x = graphene_vec3_length (&col1);
+        md->scale_y = graphene_vec3_length (&col2);
+      }
+    break;
+    default:
+      {}
+    }
+}
+
+void
+ops_transform_bounds_modelview (const RenderOpBuilder *builder,
+                                const graphene_rect_t *src,
+                                graphene_rect_t       *dst)
+{
+  graphene_rect_t r = *src;
+
+  g_assert (builder->mv_stack != NULL);
+  g_assert (builder->mv_stack->len >= 1);
+
+  r.origin.x += builder->dx;
+  r.origin.y += builder->dy;
+
+  gsk_transform_transform_bounds (builder->current_modelview, &r, dst);
+}
+
+void
+ops_init (RenderOpBuilder *builder)
+{
+  memset (builder, 0, sizeof (*builder));
+
+  builder->current_opacity = 1.0f;
+
+  op_buffer_init (&builder->render_ops);
+  builder->vertices = g_array_new (FALSE, TRUE, sizeof (GskQuadVertex));
+}
+
+void
+ops_free (RenderOpBuilder *builder)
+{
+  g_array_unref (builder->vertices);
+  op_buffer_destroy (&builder->render_ops);
+}
+
+void
+ops_set_program (RenderOpBuilder *builder,
+                 Program         *program)
+{
+  OpProgram *op;
+
+  if (builder->current_program == program)
+    return;
+
+  op = ops_begin (builder, OP_CHANGE_PROGRAM);
+  op->program = program;
+
+  builder->current_program = program;
+}
+
+void
+ops_push_clip (RenderOpBuilder      *self,
+               const GskRoundedRect *clip)
+{
+  ClipStackEntry entry;
+
+  if (G_UNLIKELY (self->clip_stack == NULL))
+    self->clip_stack = g_array_new (FALSE, TRUE, sizeof (ClipStackEntry));
+
+  g_assert (self->clip_stack != NULL);
+
+  entry.rect = *clip;
+  entry.is_rectilinear = gsk_rounded_rect_is_rectilinear (clip);
+  g_array_append_val (self->clip_stack, entry);
+  self->current_clip = &g_array_index (self->clip_stack, ClipStackEntry, self->clip_stack->len - 1).rect;
+  self->clip_is_rectilinear = entry.is_rectilinear;
+}
+
+void
+ops_pop_clip (RenderOpBuilder *self)
+{
+  const ClipStackEntry *head;
+
+  g_assert (self->clip_stack);
+  g_assert (self->clip_stack->len >= 1);
+
+  self->clip_stack->len --;
+  head = &g_array_index (self->clip_stack, ClipStackEntry, self->clip_stack->len - 1);
+
+  if (self->clip_stack->len >= 1)
+    {
+      self->current_clip = &head->rect;
+      self->clip_is_rectilinear = head->is_rectilinear;
+    }
+  else
+    {
+      self->current_clip = NULL;
+      self->clip_is_rectilinear = TRUE;
+    }
+}
+
+gboolean
+ops_has_clip (RenderOpBuilder *self)
+{
+  return self->clip_stack != NULL &&
+         self->clip_stack->len > 1;
+}
+
+/**
+ * ops_set_modelview:
+ * @builder
+ * @transform: (transfer full): The new modelview transform
+ *
+ * This sets the modelview to the given one without looking at the
+ * one that's currently set */
+void
+ops_set_modelview (RenderOpBuilder *builder,
+                   GskTransform    *transform)
+{
+  MatrixStackEntry *entry;
+
+  if (G_UNLIKELY (builder->mv_stack == NULL))
+    builder->mv_stack = g_array_new (FALSE, TRUE, sizeof (MatrixStackEntry));
+
+  g_assert (builder->mv_stack != NULL);
+
+  g_array_set_size (builder->mv_stack, builder->mv_stack->len + 1);
+  entry = &g_array_index (builder->mv_stack, MatrixStackEntry, builder->mv_stack->len - 1);
+
+  entry->transform = transform;
+
+  entry->metadata.dx_before = builder->dx;
+  entry->metadata.dy_before = builder->dy;
+  extract_matrix_metadata (entry->transform, &entry->metadata);
+
+  builder->dx = 0;
+  builder->dy = 0;
+  builder->current_modelview = entry->transform;
+  builder->scale_x = entry->metadata.scale_x;
+  builder->scale_y = entry->metadata.scale_y;
+}
+
+/* This sets the given modelview to the one we get when multiplying
+ * the given modelview with the current one. */
+void
+ops_push_modelview (RenderOpBuilder *builder,
+                    GskTransform    *transform)
+{
+  MatrixStackEntry *entry;
+
+  if (G_UNLIKELY (builder->mv_stack == NULL))
+    builder->mv_stack = g_array_new (FALSE, TRUE, sizeof (MatrixStackEntry));
+
+  g_assert (builder->mv_stack != NULL);
+
+  g_array_set_size (builder->mv_stack, builder->mv_stack->len + 1);
+  entry = &g_array_index (builder->mv_stack, MatrixStackEntry, builder->mv_stack->len - 1);
+
+  if (G_LIKELY (builder->mv_stack->len >= 2))
+    {
+      const MatrixStackEntry *cur;
+      GskTransform *t = NULL;
+
+      cur = &g_array_index (builder->mv_stack, MatrixStackEntry, builder->mv_stack->len - 2);
+      /* Multiply given matrix with current modelview */
+
+      t = gsk_transform_translate (gsk_transform_ref (cur->transform),
+                                   &(graphene_point_t) { builder->dx, builder->dy});
+      t = gsk_transform_transform (t, transform);
+      entry->transform = t;
+    }
+  else
+    {
+      entry->transform = gsk_transform_ref (transform);
+    }
+
+  entry->metadata.dx_before = builder->dx;
+  entry->metadata.dy_before = builder->dy;
+  extract_matrix_metadata (entry->transform, &entry->metadata);
+
+  builder->dx = 0;
+  builder->dy = 0;
+  builder->scale_x = entry->metadata.scale_x;
+  builder->scale_y = entry->metadata.scale_y;
+  builder->current_modelview = entry->transform;
+}
+
+void
+ops_pop_modelview (RenderOpBuilder *builder)
+{
+  const MatrixStackEntry *head;
+
+  g_assert (builder->mv_stack);
+  g_assert (builder->mv_stack->len >= 1);
+
+  head = &g_array_index (builder->mv_stack, MatrixStackEntry, builder->mv_stack->len - 1);
+  builder->dx = head->metadata.dx_before;
+  builder->dy = head->metadata.dy_before;
+  gsk_transform_unref (head->transform);
+
+  builder->mv_stack->len --;
+  head = &g_array_index (builder->mv_stack, MatrixStackEntry, builder->mv_stack->len - 1);
+
+  if (builder->mv_stack->len >= 1)
+    {
+      builder->scale_x = head->metadata.scale_x;
+      builder->scale_y = head->metadata.scale_y;
+      builder->current_modelview = head->transform;
+    }
+  else
+    {
+      builder->current_modelview = NULL;
+    }
+}
+
+graphene_matrix_t
+ops_set_projection (RenderOpBuilder         *builder,
+                    const graphene_matrix_t *projection)
+{
+  graphene_matrix_t prev_mv;
+
+  prev_mv = builder->current_projection;
+  builder->current_projection = *projection;
+
+  return prev_mv;
+}
+
+graphene_rect_t
+ops_set_viewport (RenderOpBuilder       *builder,
+                  const graphene_rect_t *viewport)
+{
+  ProgramState *current_program_state = get_current_program_state (builder);
+  OpViewport *op;
+  graphene_rect_t prev_viewport;
+
+  if (rect_equal (&builder->current_viewport, viewport))
+    return *viewport;
+
+  op = ops_begin (builder, OP_CHANGE_VIEWPORT);
+  op->viewport = *viewport;
+
+  if (current_program_state != NULL)
+    current_program_state->viewport = *viewport;
+
+  prev_viewport = builder->current_viewport;
+  builder->current_viewport = *viewport;
+
+  return prev_viewport;
+}
+
+void
+ops_set_texture (RenderOpBuilder *builder,
+                 int              texture_id)
+{
+  OpTexture *op;
+
+  if (builder->current_texture == texture_id)
+    return;
+
+  op = ops_begin (builder, OP_CHANGE_SOURCE_TEXTURE);
+  op->texture_id = texture_id;
+  builder->current_texture = texture_id;
+}
+
+void
+ops_set_extra_texture (RenderOpBuilder *builder,
+                       int              texture_id,
+                       int              idx)
+{
+  OpExtraTexture *op;
+
+  op = ops_begin (builder, OP_CHANGE_EXTRA_SOURCE_TEXTURE);
+  op->texture_id = texture_id;
+  op->idx = idx;
+}
+
+int
+ops_set_render_target (RenderOpBuilder *builder,
+                       int              render_target_id)
+{
+  OpRenderTarget *op;
+  int prev_render_target;
+
+  if (builder->current_render_target == render_target_id)
+    return render_target_id;
+
+  prev_render_target = builder->current_render_target;
+
+  if (!(op = op_buffer_peek_tail_checked (&builder->render_ops, OP_CHANGE_RENDER_TARGET)))
+    op = op_buffer_add (&builder->render_ops, OP_CHANGE_RENDER_TARGET);
+
+  op->render_target_id = render_target_id;
+
+  builder->current_render_target = render_target_id;
+
+  return prev_render_target;
+}
+
+float
+ops_set_opacity (RenderOpBuilder *builder,
+                 float            opacity)
+{
+  float prev_opacity;
+
+  if (builder->current_opacity == opacity)
+    return opacity;
+
+  prev_opacity = builder->current_opacity;
+  builder->current_opacity = opacity;
+
+  return prev_opacity;
+}
+
+void
+ops_set_color (RenderOpBuilder *builder,
+               const GdkRGBA   *color)
+{
+  ProgramState *current_program_state = get_current_program_state (builder);
+  OpColor *op;
+
+  if (gdk_rgba_equal (color, &current_program_state->color))
+    return;
+
+  current_program_state->color = *color;
+
+  op = ops_begin (builder, OP_CHANGE_COLOR);
+  op->rgba = color;
+}
+
+void
+ops_set_gl_shader_args (RenderOpBuilder       *builder,
+                        GskGLShader           *shader,
+                        float                  width,
+                        float                  height,
+                        const guchar          *uniform_data)
+{
+  ProgramState *current_program_state = get_current_program_state (builder);
+  OpGLShader *op;
+  gsize args_size = gsk_gl_shader_get_args_size (shader);
+
+  if (current_program_state)
+    {
+      if (current_program_state->gl_shader.width == width &&
+          current_program_state->gl_shader.height == height &&
+          current_program_state->gl_shader.uniform_data_len == args_size &&
+          memcmp (current_program_state->gl_shader.uniform_data, uniform_data, args_size) == 0)
+        return;
+
+      current_program_state->gl_shader.width = width;
+      current_program_state->gl_shader.height = height;
+      if (args_size > sizeof (current_program_state->gl_shader.uniform_data))
+        current_program_state->gl_shader.uniform_data_len = 0;
+      else
+        {
+          current_program_state->gl_shader.uniform_data_len = args_size;
+          memcpy (current_program_state->gl_shader.uniform_data, uniform_data, args_size);
+        }
+    }
+
+  op = ops_begin (builder, OP_CHANGE_GL_SHADER_ARGS);
+  op->shader = shader;
+  op->size[0] = width;
+  op->size[1] = height;
+  op->uniform_data = uniform_data;
+}
+
+void
+ops_set_color_matrix (RenderOpBuilder         *builder,
+                      const graphene_matrix_t *matrix,
+                      const graphene_vec4_t   *offset)
+{
+  ProgramState *current_program_state = get_current_program_state (builder);
+  const bool offset_equal = graphene_vec4_equal (offset, &current_program_state->color_matrix.offset);
+  const bool matrix_equal = graphene_matrix_equal_fast (matrix,
+                                                        &current_program_state->color_matrix.matrix);
+  OpColorMatrix *op;
+
+  if (offset_equal && matrix_equal)
+    return;
+
+  op = ops_begin (builder, OP_CHANGE_COLOR_MATRIX);
+
+  if (!matrix_equal)
+    {
+      current_program_state->color_matrix.matrix = *matrix;
+      op->matrix.value = matrix;
+      op->matrix.send = TRUE;
+    }
+  else
+    op->matrix.send = FALSE;
+
+  if (!offset_equal)
+    {
+      current_program_state->color_matrix.offset = *offset;
+      op->offset.value = offset;
+      op->offset.send = TRUE;
+    }
+  else
+    op->offset.send = FALSE;
+}
+
+void
+ops_set_border (RenderOpBuilder      *builder,
+                const GskRoundedRect *outline)
+{
+  ProgramState *current_program_state = get_current_program_state (builder);
+  OpBorder *op;
+
+  if (memcmp (&current_program_state->border.outline,
+              outline, sizeof (GskRoundedRect)) == 0)
+    return;
+
+  current_program_state->border.outline = *outline;
+
+  op = ops_begin (builder, OP_CHANGE_BORDER);
+  op->outline = *outline;
+}
+
+void
+ops_set_border_width (RenderOpBuilder *builder,
+                      const float     *widths)
+{
+  ProgramState *current_program_state = get_current_program_state (builder);
+  OpBorder *op;
+
+  g_assert (current_program_state);
+
+  if (memcmp (current_program_state->border.widths,
+              widths, sizeof (float) * 4) == 0)
+    return;
+
+  memcpy (&current_program_state->border.widths,
+          widths, sizeof (float) * 4);
+
+  op = ops_begin (builder, OP_CHANGE_BORDER_WIDTH);
+  op->widths[0] = widths[0];
+  op->widths[1] = widths[1];
+  op->widths[2] = widths[2];
+  op->widths[3] = widths[3];
+}
+
+void
+ops_set_border_color (RenderOpBuilder *builder,
+                      const GdkRGBA   *color)
+{
+  ProgramState *current_program_state = get_current_program_state (builder);
+  OpBorder *op;
+
+  if (gdk_rgba_equal (color, &current_program_state->border.color))
+    return;
+
+  op = op_buffer_add (&builder->render_ops, OP_CHANGE_BORDER_COLOR);
+  op->color = color;
+
+  current_program_state->border.color = *color;
+}
+
+GskQuadVertex *
+ops_draw (RenderOpBuilder     *builder,
+          const GskQuadVertex  vertex_data[GL_N_VERTICES])
+{
+  ProgramState *program_state = get_current_program_state (builder);
+  OpDraw *op;
+
+  if (memcmp (&builder->current_projection, &program_state->projection, sizeof (graphene_matrix_t)) != 0)
+    {
+      OpMatrix *opm;
+
+      opm = ops_begin (builder, OP_CHANGE_PROJECTION);
+      opm->matrix = builder->current_projection;
+      program_state->projection = builder->current_projection;
+    }
+
+  if (program_state->modelview == NULL ||
+      !gsk_transform_equal (builder->current_modelview, program_state->modelview))
+    {
+      OpMatrix *opm;
+
+      opm = ops_begin (builder, OP_CHANGE_MODELVIEW);
+      gsk_transform_to_matrix (builder->current_modelview, &opm->matrix);
+      gsk_transform_unref (program_state->modelview);
+      program_state->modelview = gsk_transform_ref (builder->current_modelview);
+    }
+
+  if (!rect_equal (&builder->current_viewport, &program_state->viewport))
+    {
+      OpViewport *opv;
+
+      opv = ops_begin (builder, OP_CHANGE_VIEWPORT);
+      opv->viewport = builder->current_viewport;
+      program_state->viewport = builder->current_viewport;
+    }
+
+  if (!rounded_rect_equal (builder->current_clip, &program_state->clip))
+    {
+      OpClip *opc;
+
+      opc = ops_begin (builder, OP_CHANGE_CLIP);
+      opc->clip = *builder->current_clip;
+      opc->send_corners = !rounded_rect_corners_equal (builder->current_clip, &program_state->clip);
+      program_state->clip = *builder->current_clip;
+    }
+
+  if (program_state->opacity != builder->current_opacity)
+    {
+      OpOpacity *opo;
+
+      opo = ops_begin (builder, OP_CHANGE_OPACITY);
+      opo->opacity = builder->current_opacity;
+      program_state->opacity = builder->current_opacity;
+    }
+
+  /* TODO: Did the additions above break the following optimization? */
+  if ((op = op_buffer_peek_tail_checked (&builder->render_ops, OP_DRAW)))
+    {
+      op->vao_size += GL_N_VERTICES;
+    }
+  else
+    {
+      op = op_buffer_add (&builder->render_ops, OP_DRAW);
+      op->vao_offset = builder->vertices->len;
+      op->vao_size = GL_N_VERTICES;
+    }
+
+  if (vertex_data)
+    {
+      g_array_append_vals (builder->vertices, vertex_data, GL_N_VERTICES);
+      return NULL; /* Better not use this on the caller side */
+    }
+
+  g_array_set_size (builder->vertices, builder->vertices->len + GL_N_VERTICES);
+  return &g_array_index (builder->vertices, GskQuadVertex, builder->vertices->len - GL_N_VERTICES);
+}
+
+/* The offset is only valid for the current modelview.
+ * Setting a new modelview will add the offset to that matrix
+ * and reset the internal offset to 0. */
+void
+ops_offset (RenderOpBuilder *builder,
+            float            x,
+            float            y)
+{
+  builder->dx += x;
+  builder->dy += y;
+}
+
+gpointer
+ops_begin (RenderOpBuilder *builder,
+           OpKind           kind)
+{
+  return op_buffer_add (&builder->render_ops, kind);
+}
+
+void
+ops_reset (RenderOpBuilder *builder)
+{
+  op_buffer_clear (&builder->render_ops);
+  g_array_set_size (builder->vertices, 0);
+}
+
+OpBuffer *
+ops_get_buffer (RenderOpBuilder *builder)
+{
+  return &builder->render_ops;
+}
+
+void
+ops_set_inset_shadow (RenderOpBuilder      *self,
+                      const GskRoundedRect  outline,
+                      float                 spread,
+                      const GdkRGBA        *color,
+                      float                 dx,
+                      float                 dy)
+{
+  ProgramState *current_program_state = get_current_program_state (self);
+  OpShadow *op;
+
+  g_assert (current_program_state);
+
+  op = ops_begin (self, OP_CHANGE_INSET_SHADOW);
+
+  if (!rounded_rect_equal (&outline, &current_program_state->inset_shadow.outline))
+    {
+      op->outline.value = outline;
+      op->outline.send = TRUE;
+      op->outline.send_corners = !rounded_rect_corners_equal (&current_program_state->inset_shadow.outline,
+                                                              &outline);
+      current_program_state->inset_shadow.outline = outline;
+    }
+  else
+    op->outline.send = FALSE;
+
+  if (spread != current_program_state->inset_shadow.spread)
+    {
+      op->spread.value = spread;
+      op->spread.send = TRUE;
+
+      current_program_state->inset_shadow.spread = spread;
+    }
+  else
+    op->spread.send = FALSE;
+
+  if (!gdk_rgba_equal (color, &current_program_state->inset_shadow.color))
+    {
+      op->color.value = color;
+      op->color.send = TRUE;
+
+      current_program_state->inset_shadow.color = *color;
+    }
+  else
+    op->color.send = FALSE;
+
+  if (dx != current_program_state->inset_shadow.dx ||
+      dy != current_program_state->inset_shadow.dy)
+    {
+      op->offset.value[0] = dx;
+      op->offset.value[1] = dy;
+      op->offset.send = TRUE;
+
+      current_program_state->inset_shadow.dx = dx;
+      current_program_state->inset_shadow.dy = dy;
+    }
+  else
+    op->offset.send = FALSE;
+
+  if (!op->outline.send &&
+      !op->spread.send &&
+      !op->offset.send &&
+      !op->color.send)
+    {
+      op_buffer_pop_tail (&self->render_ops);
+    }
+}
+void
+ops_set_unblurred_outset_shadow (RenderOpBuilder      *self,
+                                 const GskRoundedRect  outline,
+                                 float                 spread,
+                                 const GdkRGBA        *color,
+                                 float                 dx,
+                                 float                 dy)
+{
+  ProgramState *current_program_state = get_current_program_state (self);
+  OpShadow *op;
+
+  g_assert (current_program_state);
+
+  op = ops_begin (self, OP_CHANGE_UNBLURRED_OUTSET_SHADOW);
+
+  if (!rounded_rect_equal (&outline, &current_program_state->unblurred_outset_shadow.outline))
+    {
+      op->outline.value = outline;
+      op->outline.send = TRUE;
+      op->outline.send_corners = !rounded_rect_corners_equal (&current_program_state->unblurred_outset_shadow.outline,
+                                                              &outline);
+      current_program_state->unblurred_outset_shadow.outline = outline;
+    }
+  else
+    op->outline.send = FALSE;
+
+  if (spread != current_program_state->unblurred_outset_shadow.spread)
+    {
+      op->spread.value = spread;
+      op->spread.send = TRUE;
+
+      current_program_state->unblurred_outset_shadow.spread = spread;
+    }
+  else
+    op->spread.send = FALSE;
+
+  if (!gdk_rgba_equal (color, &current_program_state->unblurred_outset_shadow.color))
+    {
+      op->color.value = color;
+      op->color.send = TRUE;
+
+      current_program_state->unblurred_outset_shadow.color = *color;
+    }
+  else
+    op->color.send = FALSE;
+
+  if (dx != current_program_state->unblurred_outset_shadow.dx ||
+      dy != current_program_state->unblurred_outset_shadow.dy)
+    {
+      op->offset.value[0] = dx;
+      op->offset.value[1] = dy;
+      op->offset.send = TRUE;
+
+      current_program_state->unblurred_outset_shadow.dx = dx;
+      current_program_state->unblurred_outset_shadow.dy = dy;
+    }
+  else
+    op->offset.send = FALSE;
+}
+
+void
+ops_set_linear_gradient (RenderOpBuilder     *self,
+                         guint                n_color_stops,
+                         const GskColorStop  *color_stops,
+                         gboolean             repeat,
+                         float                start_x,
+                         float                start_y,
+                         float                end_x,
+                         float                end_y)
+{
+  ProgramState *current_program_state = get_current_program_state (self);
+  OpLinearGradient *op;
+  const guint real_n_color_stops = MIN (GL_MAX_GRADIENT_STOPS, n_color_stops);
+
+  g_assert (current_program_state);
+
+  op = ops_begin (self, OP_CHANGE_LINEAR_GRADIENT);
+
+  /* We always save the n_color_stops value in the op so the renderer can use it in
+   * cases where we send the color stops, but not n_color_stops */
+  op->n_color_stops.value = real_n_color_stops;
+  if (current_program_state->linear_gradient.n_color_stops != real_n_color_stops)
+    {
+      op->n_color_stops.send = TRUE;
+      current_program_state->linear_gradient.n_color_stops = real_n_color_stops;
+    }
+  else
+    op->n_color_stops.send = FALSE;
+
+  op->color_stops.send = FALSE;
+  if (!op->n_color_stops.send)
+    {
+      g_assert (current_program_state->linear_gradient.n_color_stops == real_n_color_stops);
+
+      for (guint i = 0; i < real_n_color_stops; i ++)
+        {
+          const GskColorStop *s1 = &color_stops[i];
+          const GskColorStop *s2 = &current_program_state->linear_gradient.color_stops[i];
+
+          if (s1->offset != s2->offset ||
+              !gdk_rgba_equal (&s1->color, &s2->color))
+            {
+              op->color_stops.send = TRUE;
+              break;
+            }
+        }
+    }
+  else
+    op->color_stops.send = TRUE;
+
+  if (op->color_stops.send)
+    {
+      op->color_stops.value = color_stops;
+      memcpy (&current_program_state->linear_gradient.color_stops,
+              color_stops,
+              sizeof (GskColorStop) * real_n_color_stops);
+    }
+
+  op->repeat = repeat;
+  op->start_point[0] = start_x;
+  op->start_point[1] = start_y;
+  op->end_point[0] = end_x;
+  op->end_point[1] = end_y;
+}
+
+void
+ops_set_radial_gradient (RenderOpBuilder    *self,
+                         guint               n_color_stops,
+                         const GskColorStop *color_stops,
+                         gboolean            repeat,
+                         float               center_x,
+                         float               center_y,
+                         float               start,
+                         float               end,
+                         float               hradius,
+                         float               vradius)
+{
+  const guint real_n_color_stops = MIN (GL_MAX_GRADIENT_STOPS, n_color_stops);
+  OpRadialGradient *op;
+
+  /* TODO: State tracking? */
+
+  op = ops_begin (self, OP_CHANGE_RADIAL_GRADIENT);
+  op->n_color_stops.value = real_n_color_stops;
+  op->n_color_stops.send = true;
+  op->color_stops.value = color_stops;
+  op->color_stops.send = true;
+  op->center[0] = center_x;
+  op->center[1] = center_y;
+  op->radius[0] = hradius;
+  op->radius[1] = vradius;
+  op->start = start;
+  op->end = end;
+  op->repeat = repeat;
+}
+
+void
+ops_set_conic_gradient (RenderOpBuilder    *self,
+                        guint               n_color_stops,
+                        const GskColorStop *color_stops,
+                        float               center_x,
+                        float               center_y,
+                        float               angle)
+{
+  const guint real_n_color_stops = MIN (GL_MAX_GRADIENT_STOPS, n_color_stops);
+  OpConicGradient *op;
+
+  /* TODO: State tracking? */
+
+  op = ops_begin (self, OP_CHANGE_CONIC_GRADIENT);
+  op->n_color_stops.value = real_n_color_stops;
+  op->n_color_stops.send = true;
+  op->color_stops.value = color_stops;
+  op->color_stops.send = true;
+  op->center[0] = center_x;
+  op->center[1] = center_y;
+  op->angle = angle;
+}
+
@@ -0,0 +1,353 @@
+#ifndef __GSK_GL_RENDER_OPS_H__
+#define __GSK_GL_RENDER_OPS_H__
+
+#include <glib.h>
+#include <graphene.h>
+#include <gdk/gdk.h>
+
+#include "gskgldriverprivate.h"
+#include "gskroundedrectprivate.h"
+#include "gskglrenderer.h"
+#include "gskrendernodeprivate.h"
+
+#include "opbuffer.h"
+
+#define GL_N_VERTICES 6
+#define GL_N_PROGRAMS 15
+#define GL_MAX_GRADIENT_STOPS 6
+
+typedef struct
+{
+  float scale_x;
+  float scale_y;
+
+  float dx_before;
+  float dy_before;
+} OpsMatrixMetadata;
+
+typedef struct
+{
+  GskTransform *transform;
+  OpsMatrixMetadata metadata;
+} MatrixStackEntry;
+
+typedef struct
+{
+  GskTransform *modelview;
+  GskRoundedRect clip;
+  graphene_matrix_t projection;
+  int source_texture;
+  graphene_rect_t viewport;
+  float opacity;
+  /* Per-program state */
+  union {
+    GdkRGBA color;
+    struct {
+      graphene_matrix_t matrix;
+      graphene_vec4_t offset;
+    } color_matrix;
+    struct {
+      float widths[4];
+      GdkRGBA color;
+      GskRoundedRect outline;
+    } border;
+    struct {
+      GskRoundedRect outline;
+      float dx;
+      float dy;
+      float spread;
+      GdkRGBA color;
+    } inset_shadow;
+    struct {
+      GskRoundedRect outline;
+      float dx;
+      float dy;
+      float spread;
+      GdkRGBA color;
+    } unblurred_outset_shadow;
+    struct {
+      int n_color_stops;
+      GskColorStop color_stops[GL_MAX_GRADIENT_STOPS];
+      float start_point[2];
+      float end_point[2];
+    } linear_gradient;
+    struct {
+      int n_color_stops;
+      GskColorStop color_stops[GL_MAX_GRADIENT_STOPS];
+      float center[2];
+      float start;
+      float end;
+      float radius[2]; /* h/v */
+    } radial_gradient;
+    struct {
+      float width;
+      float height;
+      int uniform_data_len;
+      guchar uniform_data[32];
+    } gl_shader;
+  };
+} ProgramState;
+
+struct _Program
+{
+  const char *name;
+
+  int index;        /* Into the renderer's program array -1 for custom */
+
+  int id;
+  /* Common locations (gl_common)*/
+  int source_location;
+  int position_location;
+  int uv_location;
+  int alpha_location;
+  int viewport_location;
+  int projection_location;
+  int modelview_location;
+  int clip_rect_location;
+  union {
+    struct {
+      int color_location;
+    } color;
+    struct {
+      int color_location;
+    } coloring;
+    struct {
+      int color_matrix_location;
+      int color_offset_location;
+    } color_matrix;
+    struct {
+      int num_color_stops_location;
+      int color_stops_location;
+      int points_location;
+      int repeat_location;
+    } linear_gradient;
+    struct {
+      int num_color_stops_location;
+      int color_stops_location;
+      int geometry_location;
+      int range_location;
+      int repeat_location;
+    } radial_gradient;
+    struct {
+      int num_color_stops_location;
+      int color_stops_location;
+      int geometry_location;
+    } conic_gradient;
+    struct {
+      int blur_radius_location;
+      int blur_size_location;
+      int blur_dir_location;
+    } blur;
+    struct {
+      int color_location;
+      int spread_location;
+      int offset_location;
+      int outline_rect_location;
+    } inset_shadow;
+    struct {
+      int color_location;
+      int outline_rect_location;
+    } outset_shadow;
+    struct {
+      int outline_rect_location;
+      int color_location;
+      int spread_location;
+      int offset_location;
+    } unblurred_outset_shadow;
+    struct {
+      int color_location;
+      int widths_location;
+      int outline_rect_location;
+    } border;
+    struct {
+      int source2_location;
+      int progress_location;
+    } cross_fade;
+    struct {
+      int source2_location;
+      int mode_location;
+    } blend;
+    struct {
+      int child_bounds_location;
+      int texture_rect_location;
+    } repeat;
+    struct {
+      int size_location;
+      int args_locations[8];
+      int texture_locations[4];
+      GError *compile_error;
+    } glshader;
+  };
+  ProgramState state;
+};
+
+typedef struct {
+  int ref_count;
+  union {
+    Program programs[GL_N_PROGRAMS];
+    struct {
+      Program blend_program;
+      Program blit_program;
+      Program blur_program;
+      Program border_program;
+      Program color_matrix_program;
+      Program color_program;
+      Program coloring_program;
+      Program cross_fade_program;
+      Program inset_shadow_program;
+      Program linear_gradient_program;
+      Program radial_gradient_program;
+      Program conic_gradient_program;
+      Program outset_shadow_program;
+      Program repeat_program;
+      Program unblurred_outset_shadow_program;
+    };
+  };
+  GHashTable *custom_programs; /* GskGLShader -> Program* */
+} GskGLRendererPrograms;
+
+typedef struct
+{
+  GskGLRendererPrograms *programs;
+  Program *current_program;
+  int current_render_target;
+  int current_texture;
+
+  graphene_matrix_t current_projection;
+  graphene_rect_t current_viewport;
+  float current_opacity;
+  float dx, dy;
+  float scale_x, scale_y;
+
+  OpBuffer render_ops;
+  GArray *vertices;
+
+  GskGLRenderer *renderer;
+
+  /* Stack of modelview matrices */
+  GArray *mv_stack;
+  GskTransform *current_modelview;
+
+  /* Same thing */
+  GArray *clip_stack;
+  /* Pointer into clip_stack */
+  const GskRoundedRect *current_clip;
+  bool clip_is_rectilinear;
+} RenderOpBuilder;
+
+
+void              ops_dump_framebuffer   (RenderOpBuilder         *builder,
+                                          const char              *filename,
+                                          int                      width,
+                                          int                      height);
+void              ops_init               (RenderOpBuilder         *builder);
+void              ops_free               (RenderOpBuilder         *builder);
+void              ops_reset              (RenderOpBuilder         *builder);
+void              ops_push_debug_group    (RenderOpBuilder         *builder,
+                                           const char              *text);
+void              ops_pop_debug_group     (RenderOpBuilder         *builder);
+
+void              ops_finish             (RenderOpBuilder         *builder);
+void              ops_push_modelview     (RenderOpBuilder         *builder,
+                                          GskTransform            *transform);
+void              ops_set_modelview      (RenderOpBuilder         *builder,
+                                          GskTransform            *transform);
+void              ops_pop_modelview      (RenderOpBuilder         *builder);
+void              ops_set_program        (RenderOpBuilder         *builder,
+                                          Program                 *program);
+
+void              ops_push_clip          (RenderOpBuilder         *builder,
+                                          const GskRoundedRect    *clip);
+void              ops_pop_clip           (RenderOpBuilder         *builder);
+gboolean          ops_has_clip           (RenderOpBuilder         *builder);
+
+void              ops_transform_bounds_modelview (const RenderOpBuilder *builder,
+                                                  const graphene_rect_t *src,
+                                                  graphene_rect_t       *dst);
+
+graphene_matrix_t ops_set_projection     (RenderOpBuilder         *builder,
+                                          const graphene_matrix_t *projection);
+
+graphene_rect_t   ops_set_viewport       (RenderOpBuilder         *builder,
+                                          const graphene_rect_t   *viewport);
+
+void              ops_set_texture        (RenderOpBuilder         *builder,
+                                          int                      texture_id);
+void              ops_set_extra_texture  (RenderOpBuilder         *builder,
+                                          int                      texture_id,
+                                          int                      idx);
+
+int               ops_set_render_target  (RenderOpBuilder         *builder,
+                                          int                      render_target_id);
+
+float             ops_set_opacity        (RenderOpBuilder         *builder,
+                                          float                    opacity);
+void              ops_set_color          (RenderOpBuilder         *builder,
+                                          const GdkRGBA           *color);
+
+void              ops_set_color_matrix   (RenderOpBuilder         *builder,
+                                          const graphene_matrix_t *matrix,
+                                          const graphene_vec4_t   *offset);
+
+void              ops_set_border         (RenderOpBuilder         *builder,
+                                          const GskRoundedRect    *outline);
+void              ops_set_border_width   (RenderOpBuilder         *builder,
+                                          const float             *widths);
+
+void              ops_set_border_color   (RenderOpBuilder         *builder,
+                                          const GdkRGBA           *color);
+void              ops_set_inset_shadow   (RenderOpBuilder         *self,
+                                          const GskRoundedRect     outline,
+                                          float                    spread,
+                                          const GdkRGBA           *color,
+                                          float                    dx,
+                                          float                    dy);
+void              ops_set_gl_shader_args (RenderOpBuilder         *builder,
+                                          GskGLShader             *shader,
+                                          float                    width,
+                                          float                    height,
+                                          const guchar            *uniform_data);
+void              ops_set_unblurred_outset_shadow   (RenderOpBuilder         *self,
+                                                     const GskRoundedRect     outline,
+                                                     float                    spread,
+                                                     const GdkRGBA           *color,
+                                                     float                    dx,
+                                                     float                    dy);
+
+void              ops_set_linear_gradient (RenderOpBuilder     *self,
+                                           guint                n_color_stops,
+                                           const GskColorStop  *color_stops,
+                                           gboolean             repeat,
+                                           float                start_x,
+                                           float                start_y,
+                                           float                end_x,
+                                           float                end_y);
+void              ops_set_radial_gradient (RenderOpBuilder        *self,
+                                           guint                   n_color_stops,
+                                           const GskColorStop     *color_stops,
+                                           gboolean                repeat,
+                                           float                   center_x,
+                                           float                   center_y,
+                                           float                   start,
+                                           float                   end,
+                                           float                   hradius,
+                                           float                   vradius);
+void              ops_set_conic_gradient  (RenderOpBuilder        *self,
+                                           guint                   n_color_stops,
+                                           const GskColorStop     *color_stops,
+                                           float                   center_x,
+                                           float                   center_y,
+                                           float                   angle);
+
+GskQuadVertex *   ops_draw               (RenderOpBuilder        *builder,
+                                          const GskQuadVertex     vertex_data[GL_N_VERTICES]);
+
+void              ops_offset             (RenderOpBuilder        *builder,
+                                          float                   x,
+                                          float                   y);
+
+gpointer          ops_begin              (RenderOpBuilder        *builder,
+                                          OpKind                  kind);
+OpBuffer         *ops_get_buffer         (RenderOpBuilder        *builder);
+
+#endif
@@ -0,0 +1,271 @@
+#include "config.h"
+
+#include "gskglshaderbuilderprivate.h"
+
+#include "gskdebugprivate.h"
+
+#include <gdk/gdk.h>
+#include <epoxy/gl.h>
+
+void
+gsk_gl_shader_builder_init (GskGLShaderBuilder *self,
+                            const char         *common_preamble_resource_path,
+                            const char         *vs_preamble_resource_path,
+                            const char         *fs_preamble_resource_path)
+{
+  memset (self, 0, sizeof (*self));
+
+  self->preamble = g_resources_lookup_data (common_preamble_resource_path, 0, NULL);
+  self->vs_preamble = g_resources_lookup_data (vs_preamble_resource_path, 0, NULL);
+  self->fs_preamble = g_resources_lookup_data (fs_preamble_resource_path, 0, NULL);
+
+  g_assert (self->preamble);
+  g_assert (self->vs_preamble);
+  g_assert (self->fs_preamble);
+}
+
+void
+gsk_gl_shader_builder_finish (GskGLShaderBuilder *self)
+{
+  g_bytes_unref (self->preamble);
+  g_bytes_unref (self->vs_preamble);
+  g_bytes_unref (self->fs_preamble);
+}
+
+void
+gsk_gl_shader_builder_set_glsl_version (GskGLShaderBuilder *self,
+                                        int                 version)
+{
+  self->version = version;
+}
+
+static void
+prepend_line_numbers (char    *code,
+                      GString *s)
+{
+  char *p;
+  int line;
+
+  p = code;
+  line = 1;
+  while (*p)
+    {
+      char *end = strchr (p, '\n');
+      if (end)
+        end = end + 1; /* Include newline */
+      else
+        end = p + strlen (p);
+
+      g_string_append_printf (s, "%3d| ", line++);
+      g_string_append_len (s, p, end - p);
+
+      p = end;
+    }
+}
+
+static gboolean
+check_shader_error (int          shader_id,
+                    int          shader_type,
+                    const char  *resource_path,
+                    GError     **error)
+{
+  int status;
+  int log_len;
+  char *buffer;
+  int code_len;
+  char *code;
+  GString *s;
+
+  glGetShaderiv (shader_id, GL_COMPILE_STATUS, &status);
+
+  if (G_LIKELY (status == GL_TRUE))
+    return TRUE;
+
+  glGetShaderiv (shader_id, GL_INFO_LOG_LENGTH, &log_len);
+  buffer = g_malloc0 (log_len + 1);
+  glGetShaderInfoLog (shader_id, log_len, NULL, buffer);
+
+  glGetShaderiv (shader_id, GL_SHADER_SOURCE_LENGTH, &code_len);
+  code = g_malloc0 (code_len + 1);
+  glGetShaderSource (shader_id, code_len, NULL, code);
+
+  s = g_string_new ("");
+  prepend_line_numbers (code, s);
+
+  g_set_error (error, GDK_GL_ERROR, GDK_GL_ERROR_COMPILATION_FAILED,
+               "Compilation failure in %s shader %s.\nSource Code:\n%s\n\nError Message:\n%s\n\n",
+               (shader_type == GL_FRAGMENT_SHADER ? "fragment" : "vertex"),
+               resource_path,
+               s->str,
+               buffer);
+
+  g_string_free (s, TRUE);
+  g_free (buffer);
+  g_free (code);
+
+  return FALSE;
+}
+
+static void
+print_shader_info (const char *prefix,
+                   int         shader_id,
+                   const char *resource_path)
+{
+  if (GSK_DEBUG_CHECK(SHADERS))
+    {
+      int code_len;
+      char *code;
+      GString *s;
+
+      glGetShaderiv (shader_id, GL_SHADER_SOURCE_LENGTH, &code_len);
+      code = g_malloc0 (code_len + 1);
+      glGetShaderSource (shader_id, code_len, NULL, code);
+
+      s = g_string_new ("");
+      prepend_line_numbers (code, s);
+
+      g_message ("%s %d, %s:\n%s", prefix, shader_id, resource_path, s->str);
+      g_string_free (s,  TRUE);
+      g_free (code);
+    }
+}
+
+int
+gsk_gl_shader_builder_create_program (GskGLShaderBuilder  *self,
+                                      const char          *resource_path,
+                                      const char          *extra_fragment_snippet,
+                                      gsize                extra_fragment_length,
+                                      GError             **error)
+{
+
+  GBytes *source_bytes = g_resources_lookup_data (resource_path, 0, NULL);
+  char version_buffer[64];
+  const char *source;
+  const char *vertex_shader_start;
+  const char *fragment_shader_start;
+  int vertex_id;
+  int fragment_id;
+  int program_id = -1;
+  int status;
+
+  g_assert (source_bytes);
+
+  source = g_bytes_get_data (source_bytes, NULL);
+  vertex_shader_start = strstr (source, "VERTEX_SHADER");
+  fragment_shader_start = strstr (source, "FRAGMENT_SHADER");
+
+  g_assert (vertex_shader_start);
+  g_assert (fragment_shader_start);
+
+  /* They both start at the next newline */
+  vertex_shader_start = strstr (vertex_shader_start, "\n");
+  fragment_shader_start = strstr (fragment_shader_start, "\n");
+
+  g_snprintf (version_buffer, sizeof (version_buffer),
+              "#version %d\n", self->version);
+
+  vertex_id = glCreateShader (GL_VERTEX_SHADER);
+  glShaderSource (vertex_id, 8,
+                  (const char *[]) {
+                    version_buffer,
+                    self->debugging ? "#define GSK_DEBUG 1\n" : "",
+                    self->legacy ? "#define GSK_LEGACY 1\n" : "",
+                    self->gl3 ? "#define GSK_GL3 1\n" : "",
+                    self->gles ? "#define GSK_GLES 1\n" : "",
+                    g_bytes_get_data (self->preamble, NULL),
+                    g_bytes_get_data (self->vs_preamble, NULL),
+                    vertex_shader_start
+                  },
+                  (int[]) {
+                    -1,
+                    -1,
+                    -1,
+                    -1,
+                    -1,
+                    -1,
+                    -1,
+                    fragment_shader_start - vertex_shader_start
+                  });
+  glCompileShader (vertex_id);
+
+  if (!check_shader_error (vertex_id, GL_VERTEX_SHADER, resource_path, error))
+    {
+      glDeleteShader (vertex_id);
+      goto out;
+    }
+
+  print_shader_info ("Vertex shader", vertex_id, resource_path);
+
+  fragment_id = glCreateShader (GL_FRAGMENT_SHADER);
+  glShaderSource (fragment_id, 9,
+                  (const char *[]) {
+                    version_buffer,
+                    self->debugging ? "#define GSK_DEBUG 1\n" : "",
+                    self->legacy ? "#define GSK_LEGACY 1\n" : "",
+                    self->gl3 ? "#define GSK_GL3 1\n" : "",
+                    self->gles ? "#define GSK_GLES 1\n" : "",
+                    g_bytes_get_data (self->preamble, NULL),
+                    g_bytes_get_data (self->fs_preamble, NULL),
+                    fragment_shader_start,
+                    extra_fragment_snippet ? extra_fragment_snippet : ""
+                  },
+                  (int[]) {
+                    -1,
+                    -1,
+                    -1,
+                    -1,
+                    -1,
+                    -1,
+                    -1,
+                    -1,
+                    extra_fragment_length,
+                  });
+  glCompileShader (fragment_id);
+
+  if (!check_shader_error (fragment_id, GL_FRAGMENT_SHADER, resource_path, error))
+    {
+      glDeleteShader (fragment_id);
+      goto out;
+    }
+
+  print_shader_info ("Fragment shader", fragment_id, resource_path);
+
+  program_id = glCreateProgram ();
+  glAttachShader (program_id, vertex_id);
+  glAttachShader (program_id, fragment_id);
+  glBindAttribLocation (program_id, 0, "aPosition");
+  glBindAttribLocation (program_id, 1, "aUv");
+  glLinkProgram (program_id);
+  glDetachShader (program_id, vertex_id);
+  glDetachShader (program_id, fragment_id);
+
+  glGetProgramiv (program_id, GL_LINK_STATUS, &status);
+  if (status == GL_FALSE)
+    {
+      char *buffer = NULL;
+      int log_len = 0;
+
+      glGetProgramiv (program_id, GL_INFO_LOG_LENGTH, &log_len);
+
+      buffer = g_malloc0 (log_len + 1);
+      glGetProgramInfoLog (program_id, log_len, NULL, buffer);
+
+      g_warning ("Linking failure in shader:\n%s", buffer);
+      g_set_error (error, GDK_GL_ERROR, GDK_GL_ERROR_LINK_FAILED,
+                   "Linking failure in shader: %s", buffer);
+
+      g_free (buffer);
+
+      glDeleteProgram (program_id);
+      program_id = -1;
+    }
+
+  glDeleteShader (vertex_id);
+  glDeleteShader (fragment_id);
+
+out:
+  g_bytes_unref (source_bytes);
+
+  return program_id;
+}
+
@@ -0,0 +1,42 @@
+#ifndef __GSK_SHADER_BUILDER_PRIVATE_H__
+#define __GSK_SHADER_BUILDER_PRIVATE_H__
+
+#include <gdk/gdk.h>
+#include <graphene.h>
+
+G_BEGIN_DECLS
+
+typedef struct
+{
+  GBytes *preamble;
+  GBytes *vs_preamble;
+  GBytes *fs_preamble;
+
+  int version;
+
+  guint debugging: 1;
+  guint gles: 1;
+  guint gl3: 1;
+  guint legacy: 1;
+
+} GskGLShaderBuilder;
+
+
+void   gsk_gl_shader_builder_init             (GskGLShaderBuilder  *self,
+                                               const char          *common_preamble_resource_path,
+                                               const char          *vs_preamble_resource_path,
+                                               const char          *fs_preamble_resource_path);
+void   gsk_gl_shader_builder_finish           (GskGLShaderBuilder  *self);
+
+void   gsk_gl_shader_builder_set_glsl_version (GskGLShaderBuilder  *self,
+                                               int                  version);
+
+int    gsk_gl_shader_builder_create_program   (GskGLShaderBuilder  *self,
+                                               const char          *resource_path,
+                                               const char          *extra_fragment_snippet,
+                                               gsize                extra_fragment_length,
+                                               GError             **error);
+
+G_END_DECLS
+
+#endif /* __GSK_SHADER_BUILDER_PRIVATE_H__ */
@@ -0,0 +1,141 @@
+
+#include "gskglshadowcacheprivate.h"
+
+#define MAX_UNUSED_FRAMES (16 * 5)
+
+typedef struct
+{
+  GskRoundedRect outline;
+  float blur_radius;
+} CacheKey;
+
+typedef struct
+{
+  GskRoundedRect outline;
+  float blur_radius;
+
+  int texture_id;
+  int unused_frames;
+} CacheItem;
+
+static gboolean
+key_equal (const void *x,
+           const void *y)
+{
+  const CacheKey *a = x;
+  const CacheKey *b = y;
+
+  return a->blur_radius == b->blur_radius &&
+         graphene_size_equal (&a->outline.corner[0], &b->outline.corner[0]) &&
+         graphene_size_equal (&a->outline.corner[1], &b->outline.corner[1]) &&
+         graphene_size_equal (&a->outline.corner[2], &b->outline.corner[2]) &&
+         graphene_size_equal (&a->outline.corner[3], &b->outline.corner[3]) &&
+         graphene_rect_equal (&a->outline.bounds, &b->outline.bounds);
+}
+
+void
+gsk_gl_shadow_cache_init (GskGLShadowCache *self)
+{
+  self->textures = g_array_new (FALSE, TRUE, sizeof (CacheItem));
+}
+
+void
+gsk_gl_shadow_cache_free (GskGLShadowCache *self,
+                          GskGLDriver      *gl_driver)
+{
+  guint i, p;
+
+  for (i = 0, p = self->textures->len; i < p; i ++)
+    {
+      const CacheItem *item = &g_array_index (self->textures, CacheItem, i);
+
+      gsk_gl_driver_destroy_texture (gl_driver, item->texture_id);
+    }
+
+  g_array_free (self->textures, TRUE);
+  self->textures = NULL;
+}
+
+void
+gsk_gl_shadow_cache_begin_frame (GskGLShadowCache *self,
+                                 GskGLDriver      *gl_driver)
+{
+  guint i, p;
+
+  for (i = 0, p = self->textures->len; i < p; i ++)
+    {
+      CacheItem *item = &g_array_index (self->textures, CacheItem, i);
+
+      if (item->unused_frames > MAX_UNUSED_FRAMES)
+        {
+          gsk_gl_driver_destroy_texture (gl_driver, item->texture_id);
+          g_array_remove_index_fast (self->textures, i);
+          p --;
+          i --;
+        }
+      else
+        {
+          item->unused_frames ++;
+        }
+    }
+}
+
+/* XXX
+ * The offset origin should always be at 0/0, or the blur radius should just go
+ * away since it defines the origin position anyway?
+ */
+int
+gsk_gl_shadow_cache_get_texture_id (GskGLShadowCache     *self,
+                                    GskGLDriver          *gl_driver,
+                                    const GskRoundedRect *shadow_rect,
+                                    float                 blur_radius)
+{
+  CacheItem *item= NULL;
+  guint i;
+
+  g_assert (self != NULL);
+  g_assert (gl_driver != NULL);
+  g_assert (shadow_rect != NULL);
+
+  for (i = 0; i < self->textures->len; i ++)
+    {
+      CacheItem *k = &g_array_index (self->textures, CacheItem, i);
+
+      if (key_equal (&(CacheKey){*shadow_rect, blur_radius},
+                     &(CacheKey){k->outline, k->blur_radius}))
+        {
+          item = k;
+          break;
+        }
+    }
+
+  if (item == NULL)
+    return 0;
+
+  item->unused_frames = 0;
+
+  g_assert (item->texture_id != 0);
+
+  return item->texture_id;
+}
+
+void
+gsk_gl_shadow_cache_commit (GskGLShadowCache     *self,
+                            const GskRoundedRect *shadow_rect,
+                            float                 blur_radius,
+                            int                   texture_id)
+{
+  CacheItem *item;
+
+  g_assert (self != NULL);
+  g_assert (shadow_rect != NULL);
+  g_assert (texture_id > 0);
+
+  g_array_set_size (self->textures, self->textures->len + 1);
+  item = &g_array_index (self->textures, CacheItem, self->textures->len - 1);
+
+  item->outline = *shadow_rect;
+  item->blur_radius = blur_radius;
+  item->unused_frames = 0;
+  item->texture_id = texture_id;
+}
@@ -0,0 +1,31 @@
+
+
+#ifndef __GSK_GL_SHADOW_CACHE_H__
+#define __GSK_GL_SHADOW_CACHE_H__
+
+#include <glib.h>
+#include "gskgldriverprivate.h"
+#include "gskroundedrect.h"
+
+typedef struct
+{
+  GArray *textures;
+} GskGLShadowCache;
+
+
+void gsk_gl_shadow_cache_init           (GskGLShadowCache     *self);
+void gsk_gl_shadow_cache_free           (GskGLShadowCache     *self,
+                                         GskGLDriver          *gl_driver);
+void gsk_gl_shadow_cache_begin_frame    (GskGLShadowCache     *self,
+                                         GskGLDriver          *gl_driver);
+int  gsk_gl_shadow_cache_get_texture_id (GskGLShadowCache     *self,
+                                         GskGLDriver          *gl_driver,
+                                         const GskRoundedRect *shadow_rect,
+                                         float                 blur_radius);
+void gsk_gl_shadow_cache_commit         (GskGLShadowCache     *self,
+                                         const GskRoundedRect *shadow_rect,
+                                         float                 blur_radius,
+                                         int                   texture_id);
+
+
+#endif
@@ -0,0 +1,309 @@
+
+#include "config.h"
+#include "gskgltextureatlasprivate.h"
+#include "gskdebugprivate.h"
+#include "gdkglcontextprivate.h"
+#include <epoxy/gl.h>
+
+#define ATLAS_SIZE (512)
+#define MAX_OLD_RATIO 0.5
+
+static void
+free_atlas (gpointer v)
+{
+  GskGLTextureAtlas *atlas = v;
+
+  gsk_gl_texture_atlas_free (atlas);
+
+  g_free (atlas);
+}
+
+GskGLTextureAtlases *
+gsk_gl_texture_atlases_new (void)
+{
+  GskGLTextureAtlases *self;
+
+  self = g_new (GskGLTextureAtlases, 1);
+  self->atlases = g_ptr_array_new_with_free_func (free_atlas);
+
+  self->ref_count = 1;
+
+  return self;
+}
+
+GskGLTextureAtlases *
+gsk_gl_texture_atlases_ref (GskGLTextureAtlases *self)
+{
+  self->ref_count++;
+
+  return self;
+}
+
+void
+gsk_gl_texture_atlases_unref (GskGLTextureAtlases *self)
+{
+  g_assert (self->ref_count > 0);
+
+  if (self->ref_count == 1)
+    {
+      g_ptr_array_unref (self->atlases);
+      g_free (self);
+      return;
+    }
+
+  self->ref_count--;
+}
+
+#if 0
+static void
+write_atlas_to_png (GskGLTextureAtlas *atlas,
+                    const char        *filename)
+{
+  int stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32, atlas->width);
+  guchar *data = g_malloc (atlas->height * stride);
+  cairo_surface_t *s;
+
+  glBindTexture (GL_TEXTURE_2D, atlas->texture_id);
+  glGetTexImage (GL_TEXTURE_2D, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, data);
+  s = cairo_image_surface_create_for_data (data, CAIRO_FORMAT_ARGB32, atlas->width, atlas->height, stride);
+  cairo_surface_write_to_png (s, filename);
+
+  cairo_surface_destroy (s);
+  g_free (data);
+}
+#endif
+
+void
+gsk_gl_texture_atlases_begin_frame (GskGLTextureAtlases *self,
+                                    GPtrArray           *removed)
+{
+  int i;
+
+  for (i = self->atlases->len - 1; i >= 0; i--)
+    {
+      GskGLTextureAtlas *atlas = g_ptr_array_index (self->atlases, i);
+
+      if (gsk_gl_texture_atlas_get_unused_ratio (atlas) > MAX_OLD_RATIO)
+        {
+          GSK_NOTE(GLYPH_CACHE,
+                   g_message ("Dropping atlas %d (%g.2%% old)", i,
+                              100.0 * gsk_gl_texture_atlas_get_unused_ratio (atlas)));
+
+          if (atlas->texture_id != 0)
+            {
+              glDeleteTextures (1, &atlas->texture_id);
+              atlas->texture_id = 0;
+            }
+
+          g_ptr_array_add (removed, atlas);
+          g_ptr_array_remove_index (self->atlases, i);
+       }
+    }
+
+  GSK_NOTE(GLYPH_CACHE, {
+    static guint timestamp;
+    if (timestamp++ % 60 == 0)
+      g_message ("%d atlases", self->atlases->len);
+  });
+
+
+#if 0
+  {
+    static guint timestamp;
+
+    timestamp++;
+    if (timestamp % 10 == 0)
+      for (i = 0; i < self->atlases->len; i++)
+        {
+          GskGLTextureAtlas *atlas = g_ptr_array_index (self->atlases, i);
+
+          if (atlas->texture_id)
+            {
+              char *filename;
+
+              filename = g_strdup_printf ("textureatlas%d-%u.png", i, timestamp);
+              write_atlas_to_png (atlas, filename);
+              g_free (filename);
+            }
+         }
+   }
+#endif
+}
+
+gboolean
+gsk_gl_texture_atlases_pack (GskGLTextureAtlases *self,
+                             int                  width,
+                             int                  height,
+                             GskGLTextureAtlas  **atlas_out,
+                             int                 *out_x,
+                             int                 *out_y)
+{
+  GskGLTextureAtlas *atlas;
+  int x, y;
+  int i;
+
+  g_assert (width  < ATLAS_SIZE);
+  g_assert (height < ATLAS_SIZE);
+
+  atlas = NULL;
+
+  for (i = 0; i < self->atlases->len; i++)
+    {
+      atlas = g_ptr_array_index (self->atlases, i);
+
+      if (gsk_gl_texture_atlas_pack (atlas, width, height, &x, &y))
+        break;
+
+      atlas = NULL;
+    }
+
+  if (atlas == NULL)
+    {
+      /* No atlas has enough space, so create a new one... */
+      atlas = g_malloc (sizeof (GskGLTextureAtlas));
+      gsk_gl_texture_atlas_init (atlas, ATLAS_SIZE, ATLAS_SIZE);
+      gsk_gl_texture_atlas_realize (atlas);
+      g_ptr_array_add (self->atlases, atlas);
+
+      /* Pack it onto that one, which surely has enough space... */
+      if (!gsk_gl_texture_atlas_pack (atlas, width, height, &x, &y))
+        g_assert_not_reached ();
+
+      GSK_NOTE(GLYPH_CACHE, g_message ("adding new atlas"));
+    }
+
+  *atlas_out = atlas;
+  *out_x = x;
+  *out_y = y;
+
+  return TRUE;
+}
+
+void
+gsk_gl_texture_atlas_init (GskGLTextureAtlas *self,
+                           int                width,
+                           int                height)
+{
+  memset (self, 0, sizeof (*self));
+
+  self->texture_id = 0;
+  self->width = width;
+  self->height = height;
+
+  /* TODO: We might want to change the strategy about the amount of
+   *       nodes here? stb_rect_pack.h says with is optimal. */
+  self->nodes = g_malloc0 (sizeof (struct stbrp_node) * width);
+  stbrp_init_target (&self->context,
+                     width, height,
+                     self->nodes,
+                     width);
+
+  gsk_gl_texture_atlas_realize (self);
+}
+
+void
+gsk_gl_texture_atlas_free (GskGLTextureAtlas *self)
+{
+  if (self->texture_id != 0)
+    {
+      glDeleteTextures (1, &self->texture_id);
+      self->texture_id = 0;
+    }
+
+  g_clear_pointer (&self->nodes, g_free);
+}
+
+void
+gsk_gl_texture_atlas_mark_unused (GskGLTextureAtlas *self,
+                                  int                width,
+                                  int                height)
+{
+  self->unused_pixels += (width * height);
+}
+
+
+void
+gsk_gl_texture_atlas_mark_used (GskGLTextureAtlas *self,
+                                int                width,
+                                int                height)
+{
+  self->unused_pixels -= (width * height);
+
+  g_assert (self->unused_pixels >= 0);
+}
+
+gboolean
+gsk_gl_texture_atlas_pack (GskGLTextureAtlas *self,
+                           int                width,
+                           int                height,
+                           int               *out_x,
+                           int               *out_y)
+{
+  stbrp_rect rect;
+
+  g_assert (out_x);
+  g_assert (out_y);
+
+  rect.w = width;
+  rect.h = height;
+
+  stbrp_pack_rects (&self->context, &rect, 1);
+
+  if (rect.was_packed)
+    {
+      *out_x = rect.x;
+      *out_y = rect.y;
+    }
+
+  return rect.was_packed;
+}
+
+double
+gsk_gl_texture_atlas_get_unused_ratio (const GskGLTextureAtlas *self)
+{
+  if (self->unused_pixels > 0)
+    return (double)(self->unused_pixels) / (double)(self->width * self->height);
+
+  return 0.0;
+}
+
+/* Not using gdk_gl_driver_create_texture here, since we want
+ * this texture to survive the driver and stay around until
+ * the display gets closed.
+ */
+static guint
+create_shared_texture (int width,
+                       int height)
+{
+  guint texture_id;
+
+  glGenTextures (1, &texture_id);
+  glBindTexture (GL_TEXTURE_2D, texture_id);
+
+  glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+  glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+  glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+  glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+
+  if (gdk_gl_context_get_use_es (gdk_gl_context_get_current ()))
+    glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+  else
+    glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_BGRA, GL_UNSIGNED_BYTE, NULL);
+
+  glBindTexture (GL_TEXTURE_2D, 0);
+
+  return texture_id;
+}
+
+void
+gsk_gl_texture_atlas_realize (GskGLTextureAtlas *atlas)
+{
+  if (atlas->texture_id)
+    return;
+
+  atlas->texture_id = create_shared_texture (atlas->width, atlas->height);
+  gdk_gl_context_label_object_printf (gdk_gl_context_get_current (),
+                                      GL_TEXTURE, atlas->texture_id,
+                                      "Texture atlas %d", atlas->texture_id);
+}
@@ -0,0 +1,72 @@
+
+#ifndef __GSK_GL_TEXTURE_ATLAS_H__
+#define __GSK_GL_TEXTURE_ATLAS_H__
+
+#include "stb_rect_pack.h"
+#include "gskglimageprivate.h"
+#include "gskgldriverprivate.h"
+
+struct _GskGLTextureAtlas
+{
+  struct stbrp_context context;
+  struct stbrp_node *nodes;
+
+  int width;
+  int height;
+
+  guint texture_id;
+
+  int unused_pixels; /* Pixels of rects that have been used at some point,
+                        But are now unused. */
+
+  void *user_data;
+};
+typedef struct _GskGLTextureAtlas GskGLTextureAtlas;
+
+struct _GskGLTextureAtlases
+{
+  int ref_count;
+
+  GPtrArray *atlases;
+};
+typedef struct _GskGLTextureAtlases GskGLTextureAtlases;
+
+GskGLTextureAtlases *gsk_gl_texture_atlases_new         (void);
+GskGLTextureAtlases *gsk_gl_texture_atlases_ref         (GskGLTextureAtlases *atlases);
+void                 gsk_gl_texture_atlases_unref       (GskGLTextureAtlases *atlases);
+
+void                 gsk_gl_texture_atlases_begin_frame (GskGLTextureAtlases *atlases,
+                                                         GPtrArray           *removed);
+gboolean             gsk_gl_texture_atlases_pack        (GskGLTextureAtlases *atlases,
+                                                         int                  width,
+                                                         int                  height,
+                                                         GskGLTextureAtlas  **atlas_out,
+                                                         int                 *out_x,
+                                                         int                 *out_y);
+
+void        gsk_gl_texture_atlas_init              (GskGLTextureAtlas       *self,
+                                                    int                      width,
+                                                    int                      height);
+
+void        gsk_gl_texture_atlas_free              (GskGLTextureAtlas       *self);
+
+void        gsk_gl_texture_atlas_realize           (GskGLTextureAtlas       *self);
+
+void        gsk_gl_texture_atlas_mark_unused       (GskGLTextureAtlas       *self,
+                                                    int                      width,
+                                                    int                      height);
+
+void        gsk_gl_texture_atlas_mark_used         (GskGLTextureAtlas       *self,
+                                                    int                      width,
+                                                    int                      height);
+
+
+gboolean    gsk_gl_texture_atlas_pack              (GskGLTextureAtlas       *self,
+                                                    int                      width,
+                                                    int                      height,
+                                                    int                     *out_x,
+                                                    int                     *out_y);
+
+double      gsk_gl_texture_atlas_get_unused_ratio  (const GskGLTextureAtlas *self);
+
+#endif
@@ -0,0 +1,137 @@
+#include "opbuffer.h"
+
+#include <string.h>
+
+static guint op_sizes[OP_LAST] = {
+  0,
+  sizeof (OpOpacity),
+  sizeof (OpColor),
+  sizeof (OpMatrix),
+  sizeof (OpMatrix),
+  sizeof (OpProgram),
+  sizeof (OpRenderTarget),
+  sizeof (OpClip),
+  sizeof (OpViewport),
+  sizeof (OpTexture),
+  sizeof (OpRepeat),
+  sizeof (OpLinearGradient),
+  sizeof (OpRadialGradient),
+  sizeof (OpColorMatrix),
+  sizeof (OpBlur),
+  sizeof (OpShadow),
+  sizeof (OpOutsetShadow),
+  sizeof (OpBorder),
+  sizeof (OpBorder),
+  sizeof (OpBorder),
+  sizeof (OpCrossFade),
+  sizeof (OpShadow),
+  0,
+  sizeof (OpDraw),
+  sizeof (OpDumpFrameBuffer),
+  sizeof (OpDebugGroup),
+  0,
+  sizeof (OpBlend),
+  sizeof (OpGLShader),
+  sizeof (OpExtraTexture),
+  sizeof (OpConicGradient),
+};
+
+void
+op_buffer_init (OpBuffer *buffer)
+{
+  static gsize initialized = FALSE;
+
+  if (g_once_init_enter (&initialized))
+    {
+      guint i;
+
+      for (i = 0; i < G_N_ELEMENTS (op_sizes); i++)
+        {
+          guint size = op_sizes[i];
+
+          if (size > 0)
+            {
+              /* Round all op entry sizes to the nearest 16 to ensure
+               * that we guarantee proper alignments for all op entries.
+               * This is only done once on first use.
+               */
+#define CHECK_SIZE(s) else if (size < (s)) { size = s; }
+              if (0) {}
+              CHECK_SIZE (16)
+              CHECK_SIZE (32)
+              CHECK_SIZE (48)
+              CHECK_SIZE (64)
+              CHECK_SIZE (80)
+              CHECK_SIZE (96)
+              CHECK_SIZE (112)
+              CHECK_SIZE (128)
+              CHECK_SIZE (144)
+              CHECK_SIZE (160)
+              CHECK_SIZE (176)
+              CHECK_SIZE (192)
+              else g_assert_not_reached ();
+#undef CHECK_SIZE
+
+              op_sizes[i] = size;
+            }
+        }
+
+      g_once_init_leave (&initialized, TRUE);
+    }
+
+  memset (buffer, 0, sizeof *buffer);
+
+  buffer->buflen = 4096;
+  buffer->bufpos = 0;
+  buffer->buf = g_malloc (buffer->buflen);
+  buffer->index = g_array_new (FALSE, FALSE, sizeof (OpBufferEntry));
+
+  /* Add dummy entry to guarantee non-empty index */
+  op_buffer_add (buffer, OP_NONE);
+}
+
+void
+op_buffer_destroy (OpBuffer *buffer)
+{
+  g_free (buffer->buf);
+  g_array_unref (buffer->index);
+}
+
+void
+op_buffer_clear (OpBuffer *buffer)
+{
+  if (buffer->index->len > 1)
+    g_array_remove_range (buffer->index, 1, buffer->index->len - 1);
+  buffer->bufpos = 0;
+}
+
+static inline void
+ensure_buffer_space_for (OpBuffer *buffer,
+                         guint     size)
+{
+  if G_UNLIKELY (buffer->bufpos + size >= buffer->buflen)
+    {
+      buffer->buflen *= 2;
+      buffer->buf = g_realloc (buffer->buf, buffer->buflen);
+    }
+}
+
+gpointer
+op_buffer_add (OpBuffer *buffer,
+               OpKind    kind)
+{
+  guint size = op_sizes[kind];
+  OpBufferEntry entry;
+
+  entry.pos = buffer->bufpos;
+  entry.kind = kind;
+
+  if (size > 0)
+    ensure_buffer_space_for (buffer, size);
+
+  g_array_append_val (buffer->index, entry);
+
+  buffer->bufpos += size;
+
+  return &buffer->buf[entry.pos];
+}
@@ -0,0 +1,306 @@
+#ifndef __OP_BUFFER_H__
+#define __OP_BUFFER_H__
+
+#include <gdk/gdk.h>
+#include <gsk/gsk.h>
+#include <graphene.h>
+
+#include "gskgldriverprivate.h"
+
+typedef struct _Program Program;
+
+typedef enum
+{
+  OP_NONE                              =  0,
+  OP_CHANGE_OPACITY                    =  1,
+  OP_CHANGE_COLOR                      =  2,
+  OP_CHANGE_PROJECTION                 =  3,
+  OP_CHANGE_MODELVIEW                  =  4,
+  OP_CHANGE_PROGRAM                    =  5,
+  OP_CHANGE_RENDER_TARGET              =  6,
+  OP_CHANGE_CLIP                       =  7,
+  OP_CHANGE_VIEWPORT                   =  8,
+  OP_CHANGE_SOURCE_TEXTURE             =  9,
+  OP_CHANGE_REPEAT                     = 10,
+  OP_CHANGE_LINEAR_GRADIENT            = 11,
+  OP_CHANGE_RADIAL_GRADIENT            = 12,
+  OP_CHANGE_COLOR_MATRIX               = 13,
+  OP_CHANGE_BLUR                       = 14,
+  OP_CHANGE_INSET_SHADOW               = 15,
+  OP_CHANGE_OUTSET_SHADOW              = 16,
+  OP_CHANGE_BORDER                     = 17,
+  OP_CHANGE_BORDER_COLOR               = 18,
+  OP_CHANGE_BORDER_WIDTH               = 19,
+  OP_CHANGE_CROSS_FADE                 = 20,
+  OP_CHANGE_UNBLURRED_OUTSET_SHADOW    = 21,
+  OP_CLEAR                             = 22,
+  OP_DRAW                              = 23,
+  OP_DUMP_FRAMEBUFFER                  = 24,
+  OP_PUSH_DEBUG_GROUP                  = 25,
+  OP_POP_DEBUG_GROUP                   = 26,
+  OP_CHANGE_BLEND                      = 27,
+  OP_CHANGE_GL_SHADER_ARGS             = 28,
+  OP_CHANGE_EXTRA_SOURCE_TEXTURE       = 29,
+  OP_CHANGE_CONIC_GRADIENT             = 30,
+  OP_LAST
+} OpKind;
+
+
+typedef struct { int value; guint send: 1; }    IntUniformValue;
+typedef struct { float value; guint send: 1; }    FloatUniformValue;
+typedef struct { float value[2]; guint send: 1; } Float2UniformValue;
+typedef struct { GskRoundedRect value; guint send: 1; guint send_corners: 1; } RRUniformValue;
+typedef struct { const GdkRGBA *value; guint send: 1; } RGBAUniformValue;
+typedef struct { const graphene_vec4_t *value; guint send: 1; } Vec4UniformValue;
+typedef struct { const GskColorStop *value; guint send: 1; } ColorStopUniformValue;
+typedef struct { const graphene_matrix_t *value; guint send: 1; } MatrixUniformValue;
+
+/* OpNode are allocated within OpBuffer.pos, but we keep
+ * a secondary index into the locations of that buffer
+ * from OpBuffer.index. This allows peeking at the kind
+ * and quickly replacing existing entries when necessary.
+ */
+typedef struct
+{
+  RRUniformValue outline;
+  FloatUniformValue spread;
+  Float2UniformValue offset;
+  RGBAUniformValue color;
+} OpShadow;
+
+typedef struct
+{
+  RRUniformValue outline;
+} OpOutsetShadow;
+
+typedef struct
+{
+  guint  pos;
+  OpKind kind;
+} OpBufferEntry;
+
+typedef struct
+{
+  guint8  *buf;
+  gsize    buflen;
+  gsize    bufpos;
+  GArray  *index;
+} OpBuffer;
+
+typedef struct
+{
+  float opacity;
+} OpOpacity;
+
+typedef struct
+{
+  graphene_matrix_t matrix;
+} OpMatrix;
+
+typedef struct
+{
+  const Program *program;
+} OpProgram;
+
+typedef struct
+{
+  const GdkRGBA *rgba;
+} OpColor;
+
+typedef struct
+{
+  int render_target_id;
+} OpRenderTarget;
+
+typedef struct
+{
+  GskRoundedRect clip;
+  guint send_corners: 1;
+} OpClip;
+
+typedef struct
+{
+  graphene_rect_t viewport;
+} OpViewport;
+
+typedef struct
+{
+  int texture_id;
+} OpTexture;
+
+typedef struct
+{
+  int texture_id;
+  int idx;
+} OpExtraTexture;
+
+typedef struct
+{
+  gsize vao_offset;
+  gsize vao_size;
+} OpDraw;
+
+typedef struct
+{
+  ColorStopUniformValue color_stops;
+  IntUniformValue n_color_stops;
+  float start_point[2];
+  float end_point[2];
+  gboolean repeat;
+} OpLinearGradient;
+
+typedef struct
+{
+  ColorStopUniformValue color_stops;
+  IntUniformValue n_color_stops;
+  float start;
+  float end;
+  float radius[2];
+  float center[2];
+  gboolean repeat;
+} OpRadialGradient;
+
+typedef struct
+{
+  ColorStopUniformValue color_stops;
+  IntUniformValue n_color_stops;
+  float center[2];
+  float angle;
+} OpConicGradient;
+
+typedef struct
+{
+  MatrixUniformValue matrix;
+  Vec4UniformValue offset;
+} OpColorMatrix;
+
+typedef struct
+{
+  float radius;
+  graphene_size_t size;
+  float dir[2];
+} OpBlur;
+
+typedef struct
+{
+  float widths[4];
+  const GdkRGBA *color;
+  GskRoundedRect outline;
+} OpBorder;
+
+typedef struct
+{
+  float progress;
+  int source2;
+} OpCrossFade;
+
+typedef struct
+{
+  char *filename;
+  int width;
+  int height;
+} OpDumpFrameBuffer;
+
+typedef struct
+{
+  char text[64];
+} OpDebugGroup;
+
+typedef struct
+{
+  int source2;
+  int mode;
+} OpBlend;
+
+typedef struct
+{
+  float child_bounds[4];
+  float texture_rect[4];
+} OpRepeat;
+
+typedef struct
+{
+  float size[2];
+  GskGLShader *shader;
+  const guchar *uniform_data;
+} OpGLShader;
+
+void     op_buffer_init            (OpBuffer *buffer);
+void     op_buffer_destroy         (OpBuffer *buffer);
+void     op_buffer_clear           (OpBuffer *buffer);
+gpointer op_buffer_add             (OpBuffer *buffer,
+                                    OpKind    kind);
+
+typedef struct
+{
+  GArray   *index;
+  OpBuffer *buffer;
+  guint     pos;
+} OpBufferIter;
+
+static inline void
+op_buffer_iter_init (OpBufferIter *iter,
+                     OpBuffer     *buffer)
+{
+  iter->index = buffer->index;
+  iter->buffer = buffer;
+  iter->pos = 1; /* Skip first OP_NONE */
+}
+
+static inline gpointer
+op_buffer_iter_next (OpBufferIter *iter,
+                     OpKind       *kind)
+{
+  const OpBufferEntry *entry;
+
+  if (iter->pos == iter->index->len)
+    return NULL;
+
+  entry = &g_array_index (iter->index, OpBufferEntry, iter->pos);
+
+  iter->pos++;
+
+  *kind = entry->kind;
+  return &iter->buffer->buf[entry->pos];
+}
+
+static inline void
+op_buffer_pop_tail (OpBuffer *buffer)
+{
+  /* Never truncate the first OP_NONE */
+  if G_LIKELY (buffer->index->len > 0)
+    buffer->index->len--;
+}
+
+static inline gpointer
+op_buffer_peek_tail (OpBuffer *buffer,
+                     OpKind   *kind)
+{
+  const OpBufferEntry *entry;
+
+  entry = &g_array_index (buffer->index, OpBufferEntry, buffer->index->len - 1);
+  *kind = entry->kind;
+  return &buffer->buf[entry->pos];
+}
+
+static inline gpointer
+op_buffer_peek_tail_checked (OpBuffer *buffer,
+                             OpKind    kind)
+{
+  const OpBufferEntry *entry;
+
+  entry = &g_array_index (buffer->index, OpBufferEntry, buffer->index->len - 1);
+
+  if (entry->kind == kind)
+    return &buffer->buf[entry->pos];
+
+  return NULL;
+}
+
+static inline guint
+op_buffer_n_ops (OpBuffer *buffer)
+{
+  return buffer->index->len - 1;
+}
+
+#endif /* __OP_BUFFER_H__ */
@@ -0,0 +1,310 @@
+// VERTEX_SHADER:
+void main() {
+  gl_Position = u_projection * u_modelview * vec4(aPosition, 0.0, 1.0);
+
+  vUv = vec2(aUv.x, aUv.y);
+}
+
+// FRAGMENT_SHADER:
+uniform int u_mode;
+uniform sampler2D u_source2;
+
+float
+combine (float source, float backdrop)
+{
+  return source + backdrop * (1.0 - source);
+}
+
+vec4
+composite (vec4 Cs, vec4 Cb, vec3 B)
+{
+  float ao = Cs.a + Cb.a * (1.0 - Cs.a);
+  vec3 Co = (Cs.a*(1.0 - Cb.a)*Cs.rgb + Cs.a*Cb.a*B + (1.0 - Cs.a)*Cb.a*Cb.rgb) / ao;
+  return vec4(Co, ao);
+}
+
+vec4
+normal (vec4 Cs, vec4 Cb)
+{
+  return composite (Cs, Cb, Cs.rgb);
+}
+
+vec4
+multiply (vec4 Cs, vec4 Cb)
+{
+  return composite (Cs, Cb, Cs.rgb * Cb.rgb);
+}
+
+vec4
+difference (vec4 Cs, vec4 Cb)
+{
+  return composite (Cs, Cb, abs(Cs.rgb - Cb.rgb));
+}
+
+vec4
+screen (vec4 Cs, vec4 Cb)
+{
+  return composite (Cs, Cb, Cs.rgb + Cb.rgb - Cs.rgb * Cb.rgb);
+}
+
+float
+hard_light (float source, float backdrop)
+{
+  if (source <= 0.5)
+    return 2.0 * backdrop * source;
+  else
+    return 2.0 * (backdrop + source - backdrop * source) - 1.0;
+}
+
+vec4
+hard_light (vec4 Cs, vec4 Cb)
+{
+  vec3 B = vec3 (hard_light (Cs.r, Cb.r),
+                 hard_light (Cs.g, Cb.g),
+                 hard_light (Cs.b, Cb.b));
+  return composite (Cs, Cb, B);
+}
+
+float
+soft_light (float source, float backdrop)
+{
+  float db;
+
+  if (backdrop <= 0.25)
+    db = ((16.0 * backdrop - 12.0) * backdrop + 4.0) * backdrop;
+  else
+    db = sqrt (backdrop);
+
+  if (source <= 0.5)
+    return backdrop - (1.0 - 2.0 * source) * backdrop * (1.0 - backdrop);
+  else
+    return backdrop + (2.0 * source - 1.0) * (db - backdrop);
+}
+
+vec4
+soft_light (vec4 Cs, vec4 Cb)
+{
+  vec3 B = vec3 (soft_light (Cs.r, Cb.r),
+                 soft_light (Cs.g, Cb.g),
+                 soft_light (Cs.b, Cb.b));
+  return composite (Cs, Cb, B);
+}
+
+vec4
+overlay (vec4 Cs, vec4 Cb)
+{
+  vec3 B = vec3 (hard_light (Cb.r, Cs.r),
+                 hard_light (Cb.g, Cs.g),
+                 hard_light (Cb.b, Cs.b));
+  return composite (Cs, Cb, B);
+}
+
+vec4
+darken (vec4 Cs, vec4 Cb)
+{
+  vec3 B = min (Cs.rgb, Cb.rgb);
+  return composite (Cs, Cb, B);
+}
+
+vec4
+lighten (vec4 Cs, vec4 Cb)
+{
+  vec3 B = max (Cs.rgb, Cb.rgb);
+  return composite (Cs, Cb, B);
+}
+
+float
+color_dodge (float source, float backdrop)
+{
+  return (source == 1.0) ? source : min (backdrop / (1.0 - source), 1.0);
+}
+
+vec4
+color_dodge (vec4 Cs, vec4 Cb)
+{
+  vec3 B = vec3 (color_dodge (Cs.r, Cb.r),
+                 color_dodge (Cs.g, Cb.g),
+                 color_dodge (Cs.b, Cb.b));
+  return composite (Cs, Cb, B);
+}
+
+
+float
+color_burn (float source, float backdrop)
+{
+  return (source == 0.0) ? source : max ((1.0 - ((1.0 - backdrop) / source)), 0.0);
+}
+
+vec4
+color_burn (vec4 Cs, vec4 Cb)
+{
+  vec3 B = vec3 (color_burn (Cs.r, Cb.r),
+                 color_burn (Cs.g, Cb.g),
+                 color_burn (Cs.b, Cb.b));
+  return composite (Cs, Cb, B);
+}
+
+vec4
+exclusion (vec4 Cs, vec4 Cb)
+{
+  vec3 B = Cb.rgb + Cs.rgb - 2.0 * Cb.rgb * Cs.rgb;
+  return composite (Cs, Cb, B);
+}
+
+float
+lum (vec3 c)
+{
+  return 0.3 * c.r + 0.59 * c.g + 0.11 * c.b;
+}
+
+vec3
+clip_color (vec3 c)
+{
+  float l = lum (c);
+  float n = min (c.r, min (c.g, c.b));
+  float x = max (c.r, max (c.g, c.b));
+  if (n < 0.0) c = l + (((c - l) * l) / (l - n));
+  if (x > 1.0) c = l + (((c - l) * (1.0 - l)) / (x - l));
+  return c;
+}
+
+vec3
+set_lum (vec3 c, float l)
+{
+  float d = l - lum (c);
+  return clip_color (vec3 (c.r + d, c.g + d, c.b + d));
+}
+
+float
+sat (vec3 c)
+{
+  return max (c.r, max (c.g, c.b)) - min (c.r, min (c.g, c.b));
+}
+
+vec3
+set_sat (vec3 c, float s)
+{
+  float cmin = min (c.r, min (c.g, c.b));
+  float cmax = max (c.r, max (c.g, c.b));
+  vec3 res;
+
+  if (cmax == cmin)
+    res = vec3 (0, 0, 0);
+  else
+    {
+      if (c.r == cmax)
+        {
+          if (c.g == cmin)
+            {
+              res.b = ((c.b - cmin) * s) / (cmax - cmin);
+              res.g = 0.0;
+            }
+          else
+            {
+              res.g = ((c.g - cmin) * s) / (cmax - cmin);
+              res.b = 0.0;
+            }
+          res.r = s;
+        }
+      else if (c.g == cmax)
+        {
+          if (c.r == cmin)
+            {
+              res.b = ((c.b - cmin) * s) / (cmax - cmin);
+              res.r = 0.0;
+            }
+          else
+            {
+              res.r = ((c.r - cmin) * s) / (cmax - cmin);
+              res.b = 0.0;
+            }
+          res.g = s;
+        }
+      else
+        {
+          if (c.r == cmin)
+            {
+              res.g = ((c.g - cmin) * s) / (cmax - cmin);
+              res.r = 0.0;
+            }
+          else
+            {
+              res.r = ((c.r - cmin) * s) / (cmax - cmin);
+              res.g = 0.0;
+            }
+          res.b = s;
+        }
+    }
+  return res;
+}
+
+vec4
+color (vec4 Cs, vec4 Cb)
+{
+  vec3 B = set_lum (Cs.rgb, lum (Cb.rgb));
+  return composite (Cs, Cb, B);
+}
+
+vec4
+hue (vec4 Cs, vec4 Cb)
+{
+  vec3 B = set_lum (set_sat (Cs.rgb, sat (Cb.rgb)), lum (Cb.rgb));
+  return composite (Cs, Cb, B);
+}
+
+vec4
+saturation (vec4 Cs, vec4 Cb)
+{
+  vec3 B = set_lum (set_sat (Cb.rgb, sat (Cs.rgb)), lum (Cb.rgb));
+  return composite (Cs, Cb, B);
+}
+
+vec4
+luminosity (vec4 Cs, vec4 Cb)
+{
+  vec3 B = set_lum (Cb.rgb, lum (Cs.rgb));
+  return composite (Cs, Cb, B);
+}
+
+void main() {
+  vec4 bottom_color = GskTexture(u_source, vUv);
+  vec4 top_color = GskTexture(u_source2, vUv);
+
+  vec4 result;
+  if (u_mode == 0)
+    result = normal(top_color, bottom_color);
+  else if (u_mode == 1)
+    result = multiply(top_color, bottom_color);
+  else if (u_mode == 2)
+    result = screen(top_color, bottom_color);
+  else if (u_mode == 3)
+    result = overlay(top_color, bottom_color);
+  else if (u_mode == 4)
+    result = darken(top_color, bottom_color);
+  else if (u_mode == 5)
+    result = lighten(top_color, bottom_color);
+  else if (u_mode == 6)
+    result = color_dodge(top_color, bottom_color);
+  else if (u_mode == 7)
+    result = color_burn(top_color, bottom_color);
+  else if (u_mode == 8)
+    result = hard_light(top_color, bottom_color);
+  else if (u_mode == 9)
+    result = soft_light(top_color, bottom_color);
+  else if (u_mode == 10)
+    result = difference(top_color, bottom_color);
+  else if (u_mode == 11)
+    result = exclusion(top_color, bottom_color);
+  else if (u_mode == 12)
+    result = color(top_color, bottom_color);
+  else if (u_mode == 13)
+    result = hue(top_color, bottom_color);
+  else if (u_mode == 14)
+    result = saturation(top_color, bottom_color);
+  else if (u_mode == 15)
+    result = luminosity(top_color, bottom_color);
+  else
+    discard;
+
+  gskSetOutputColor(result * u_alpha);
+}
@@ -0,0 +1,13 @@
+// VERTEX_SHADER:
+void main() {
+  gl_Position = u_projection * u_modelview * vec4(aPosition, 0.0, 1.0);
+
+  vUv = vec2(aUv.x, aUv.y);
+}
+
+// FRAGMENT_SHADER:
+void main() {
+  vec4 diffuse = GskTexture(u_source, vUv);
+
+  gskSetOutputColor(diffuse * u_alpha);
+}
@@ -0,0 +1,55 @@
+// VERTEX_SHADER:
+uniform float u_blur_radius;
+uniform vec2 u_blur_size;
+uniform vec2 u_blur_dir;
+
+_OUT_ vec2 pixel_step;
+_OUT_ float pixels_per_side;
+_OUT_ vec3 initial_gaussian;
+
+const float PI = 3.14159265;
+const float RADIUS_MULTIPLIER = 2.0;
+
+void main() {
+  gl_Position = u_projection * u_modelview * vec4(aPosition, 0.0, 1.0);
+
+  vUv = vec2(aUv.x, aUv.y);
+
+  pixel_step = (vec2(1.0) / u_blur_size) * u_blur_dir;
+  pixels_per_side = floor(u_blur_radius * RADIUS_MULTIPLIER / 2.0);
+
+  float sigma = u_blur_radius / 2.0; // *shrug*
+  initial_gaussian.x = 1.0 / (sqrt(2.0 * PI) * sigma);
+  initial_gaussian.y = exp(-0.5 / (sigma * sigma));
+  initial_gaussian.z = initial_gaussian.y * initial_gaussian.y;
+}
+
+// FRAGMENT_SHADER:
+_IN_ vec2 pixel_step;
+_IN_ float pixels_per_side;
+_IN_ vec3 initial_gaussian;
+
+// blur_radius 0 is NOT supported and MUST be caught before.
+
+// Partially from http://callumhay.blogspot.com/2010/09/gaussian-blur-shader-glsl.html
+void main() {
+  vec3 incrementalGaussian = initial_gaussian;
+
+  float coefficientSum = 0.0;
+  vec4 sum = GskTexture(u_source, vUv) * incrementalGaussian.x;
+  coefficientSum += incrementalGaussian.x;
+  incrementalGaussian.xy *= incrementalGaussian.yz;
+
+  vec2 p = pixel_step;
+  for (int i = 1; i <= int(pixels_per_side); i++) {
+    sum += GskTexture(u_source, vUv - p) * incrementalGaussian.x;
+    sum += GskTexture(u_source, vUv + p) * incrementalGaussian.x;
+
+    coefficientSum += 2.0 * incrementalGaussian.x;
+    incrementalGaussian.xy *= incrementalGaussian.yz;
+
+    p += pixel_step;
+  }
+
+  gskSetOutputColor(sum / coefficientSum);
+}
@@ -0,0 +1,40 @@
+// VERTEX_SHADER:
+uniform vec4 u_color;
+uniform vec4 u_widths;
+uniform vec4[3] u_outline_rect;
+
+_OUT_ vec4 final_color;
+_OUT_ _GSK_ROUNDED_RECT_UNIFORM_ transformed_outside_outline;
+_OUT_ _GSK_ROUNDED_RECT_UNIFORM_ transformed_inside_outline;
+
+void main() {
+  gl_Position = u_projection * u_modelview * vec4(aPosition, 0.0, 1.0);
+
+  final_color = gsk_premultiply(u_color) * u_alpha;
+
+  GskRoundedRect outside = gsk_create_rect(u_outline_rect);
+  GskRoundedRect inside = gsk_rounded_rect_shrink (outside, u_widths);
+
+  gsk_rounded_rect_transform(outside, u_modelview);
+  gsk_rounded_rect_transform(inside, u_modelview);
+
+  gsk_rounded_rect_encode(outside, transformed_outside_outline);
+  gsk_rounded_rect_encode(inside, transformed_inside_outline);
+}
+
+// FRAGMENT_SHADER:
+uniform vec4[3] u_outline_rect;
+
+_IN_ vec4 final_color;
+_IN_ _GSK_ROUNDED_RECT_UNIFORM_ transformed_outside_outline;
+_IN_ _GSK_ROUNDED_RECT_UNIFORM_ transformed_inside_outline;
+
+void main() {
+  vec2 frag = gsk_get_frag_coord();
+
+  float alpha = clamp(gsk_rounded_rect_coverage(gsk_decode_rect(transformed_outside_outline), frag) -
+                      gsk_rounded_rect_coverage(gsk_decode_rect(transformed_inside_outline), frag),
+                      0.0, 1.0);
+
+  gskSetOutputColor(final_color * alpha);
+}
@@ -0,0 +1,18 @@
+// VERTEX_SHADER:
+uniform vec4 u_color;
+
+_OUT_ vec4 final_color;
+
+void main() {
+  gl_Position = u_projection * u_modelview * vec4(aPosition, 0.0, 1.0);
+
+  final_color = gsk_premultiply(u_color) * u_alpha;
+}
+
+// FRAGMENT_SHADER:
+_IN_ vec4 final_color;
+
+void main() {
+  gskSetOutputColor(final_color);
+}
+
@@ -0,0 +1,25 @@
+// VERTEX_SHADER:
+void main() {
+  gl_Position = u_projection * u_modelview * vec4(aPosition, 0.0, 1.0);
+
+  vUv = vec2(aUv.x, aUv.y);
+}
+
+// FRAGMENT_SHADER:
+uniform mat4 u_color_matrix;
+uniform vec4 u_color_offset;
+
+void main() {
+  vec4 color = GskTexture(u_source, vUv);
+
+  // Un-premultilpy
+  if (color.a != 0.0)
+    color.rgb /= color.a;
+
+  color = u_color_matrix * color + u_color_offset;
+  color = clamp(color, 0.0, 1.0);
+
+  color.rgb *= color.a;
+
+  gskSetOutputColor(color * u_alpha);
+}
@@ -0,0 +1,22 @@
+// VERTEX_SHADER:
+uniform vec4 u_color;
+
+_OUT_ vec4 final_color;
+
+void main() {
+  gl_Position = u_projection * u_modelview * vec4(aPosition, 0.0, 1.0);
+
+  vUv = vec2(aUv.x, aUv.y);
+
+  final_color = gsk_premultiply(u_color) * u_alpha;
+}
+
+// FRAGMENT_SHADER:
+
+_IN_ vec4 final_color;
+
+void main() {
+  vec4 diffuse = GskTexture(u_source, vUv);
+
+  gskSetOutputColor(final_color * diffuse.a);
+}
@@ -0,0 +1,73 @@
+// VERTEX_SHADER
+uniform vec4 u_geometry;
+
+_NOPERSPECTIVE_ _OUT_ vec2 coord;
+
+void main() {
+  gl_Position = u_projection * (u_modelview * vec4(aPosition, 0.0, 1.0));
+
+  vec2 mv0 = u_modelview[0].xy;
+  vec2 mv1 = u_modelview[1].xy;
+  vec2 offset = aPosition - u_geometry.xy;
+
+  coord = vec2(dot(mv0, offset),
+               dot(mv1, offset));
+}
+
+// FRAGMENT_SHADER:
+#ifdef GSK_LEGACY
+uniform int u_num_color_stops;
+#else
+uniform highp int u_num_color_stops; // Why? Because it works like this.
+#endif
+
+uniform vec4 u_geometry;
+uniform float u_color_stops[6 * 5];
+
+_NOPERSPECTIVE_ _IN_ vec2 coord;
+
+float get_offset(int index) {
+  return u_color_stops[5 * index];
+}
+
+vec4 get_color(int index) {
+  int base = 5 * index + 1;
+
+  return vec4(u_color_stops[base],
+              u_color_stops[base + 1],
+              u_color_stops[base + 2],
+              u_color_stops[base + 3]);
+}
+
+void main() {
+  // direction of point in range [-PI, PI]
+  vec2 pos = floor(coord);
+  float angle = atan(pos.y, pos.x);
+
+  // fract() does the modulo here, so now we have progress
+  // into the current conic
+  float offset = fract(angle * u_geometry.z + u_geometry.w);
+
+  if (offset < get_offset(0)) {
+    gskSetOutputColor(gsk_scaled_premultiply(get_color(0), u_alpha));
+    return;
+  }
+
+  int n = u_num_color_stops - 1;
+  for (int i = 0; i < n; i++) {
+    float curr_offset = get_offset(i);
+    float next_offset = get_offset(i + 1);
+
+    if (offset >= curr_offset && offset < next_offset) {
+      float f = (offset - curr_offset) / (next_offset - curr_offset);
+      vec4 curr_color = gsk_premultiply(get_color(i));
+      vec4 next_color = gsk_premultiply(get_color(i + 1));
+      vec4 color = mix(curr_color, next_color, f);
+
+      gskSetOutputColor(color * u_alpha);
+      return;
+    }
+  }
+
+  gskSetOutputColor(gsk_scaled_premultiply(get_color(n), u_alpha));
+}
--- a/Show More
+++ b/Show More