forked from AuroraMiddleware/gtk
Use _NET_WM_FRAME_DRAWN to synchronize frame drawing
As part of the extended _NET_WM_SYNC_REQUEST_COUNTER protocol, we get a _NET_WM_FRAME_DRAWN message for each frame we draw. Use this to synchronize the updates we are doing with the compositing manager's drawing, and ultimately with with display refresh. We now set the sync request counters on all windows, including override-redirect windows, since it is also useful to do synchronized, atomic updates for such windows. https://bugzilla.gnome.org/show_bug.cgi?id=685460
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@ -681,6 +681,13 @@ gdk_x11_display_translate_event (GdkEventTranslator *translator,
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GDK_WINDOW_STATE_ICONIFIED);
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}
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if (window_impl->toplevel &&
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window_impl->toplevel->frame_pending)
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{
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window_impl->toplevel->frame_pending = FALSE;
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gdk_frame_clock_thaw (gdk_window_get_frame_clock (event->any.window));
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}
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_gdk_x11_window_grab_check_unmap (window, xevent->xany.serial);
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}
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@ -1132,6 +1139,21 @@ _gdk_wm_protocols_filter (GdkXEvent *xev,
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return GDK_FILTER_REMOVE;
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}
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else if (atom == gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_FRAME_DRAWN"))
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{
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GdkWindowImplX11 *window_impl;
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window_impl = GDK_WINDOW_IMPL_X11 (event->any.window->impl);
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if (window_impl->toplevel &&
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window_impl->toplevel->frame_pending)
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{
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window_impl->toplevel->frame_pending = FALSE;
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gdk_frame_clock_thaw (gdk_window_get_frame_clock (event->any.window));
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}
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return GDK_FILTER_REMOVE;
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}
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return GDK_FILTER_CONTINUE;
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}
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@ -213,6 +213,51 @@ set_sync_counter(Display *display,
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XSyncSetCounter(display, counter, sync_value);
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}
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static void
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gdk_x11_window_begin_frame (GdkWindow *window)
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{
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GdkWindowImplX11 *impl;
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g_return_if_fail (GDK_IS_WINDOW (window));
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impl = GDK_WINDOW_IMPL_X11 (window->impl);
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if (!WINDOW_IS_TOPLEVEL (window) ||
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impl->toplevel->extended_update_counter == None)
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return;
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impl->toplevel->current_counter_value += 1;
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set_sync_counter(GDK_WINDOW_XDISPLAY (impl->wrapper),
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impl->toplevel->extended_update_counter,
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impl->toplevel->current_counter_value);
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}
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static void
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gdk_x11_window_end_frame (GdkWindow *window)
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{
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GdkWindowImplX11 *impl;
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g_return_if_fail (GDK_IS_WINDOW (window));
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impl = GDK_WINDOW_IMPL_X11 (window->impl);
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if (!WINDOW_IS_TOPLEVEL (window) ||
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impl->toplevel->extended_update_counter == None)
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return;
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impl->toplevel->current_counter_value += 1;
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set_sync_counter(GDK_WINDOW_XDISPLAY (impl->wrapper),
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impl->toplevel->extended_update_counter,
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impl->toplevel->current_counter_value);
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if (gdk_x11_screen_supports_net_wm_hint (gdk_window_get_screen (window),
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gdk_atom_intern_static_string ("_NET_WM_FRAME_DRAWN")))
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{
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impl->toplevel->frame_pending = TRUE;
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gdk_frame_clock_freeze (gdk_window_get_frame_clock (window));
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}
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}
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/*****************************************************
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* X11 specific implementations of generic functions *
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*****************************************************/
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@ -616,9 +661,8 @@ ensure_sync_counter (GdkWindow *window)
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{
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GdkDisplay *display = GDK_WINDOW_DISPLAY (window);
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GdkToplevelX11 *toplevel = _gdk_x11_window_get_toplevel (window);
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GdkWindowImplX11 *impl = GDK_WINDOW_IMPL_X11 (window->impl);
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if (toplevel && impl->use_synchronized_configure &&
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if (toplevel &&
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toplevel->update_counter == None &&
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GDK_X11_DISPLAY (display)->use_sync)
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{
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@ -718,6 +762,20 @@ setup_toplevel_window (GdkWindow *window,
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ensure_sync_counter (window);
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}
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static void
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on_frame_clock_before_paint (GdkFrameClock *clock,
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GdkWindow *window)
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{
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gdk_x11_window_begin_frame (window);
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}
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static void
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on_frame_clock_after_paint (GdkFrameClock *clock,
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GdkWindow *window)
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{
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gdk_x11_window_end_frame (window);
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}
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void
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_gdk_x11_display_create_window_impl (GdkDisplay *display,
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GdkWindow *window,
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@ -878,6 +936,10 @@ _gdk_x11_display_create_window_impl (GdkDisplay *display,
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clock = g_object_new (GDK_TYPE_FRAME_CLOCK_IDLE, NULL);
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gdk_window_set_frame_clock (window, clock);
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g_signal_connect (clock, "before-paint",
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G_CALLBACK (on_frame_clock_before_paint), window);
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g_signal_connect (clock, "after-paint",
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G_CALLBACK (on_frame_clock_after_paint), window);
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}
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static GdkEventMask
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@ -126,6 +126,9 @@ struct _GdkToplevelX11
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/* Set if the WM is presenting us as focused, i.e. with active decorations
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*/
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guint have_focused : 1;
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/* If we're expecting a response from the compositor after painting a frame */
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guint frame_pending : 1;
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gulong map_serial; /* Serial of last transition from unmapped */
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