isa/mutter
1
0
Fork 0
mirror of https://github.com/brl/mutter.git synced 2025-08-10 02:14:42 +00:00
Code Issues Packages Projects Releases Wiki Activity

Fix corner cases where _NET_WM_FRAME_DRAWN might be missed

Browse Source 
The WM spec requires _NET_WM_FRAME_DRAWN to *always* be sent when
there is an appropriate update to the sync counter value. We were
potentially missing _NET_WM_FRAME_DRAWN when an application did a
spontaneous update during an interactive resize and during effects.
Refactor the code to always send _NET_WM_FRAME_DRAWN, even when
a window is frozen.

https://bugzilla.gnome.org/show_bug.cgi?id=693833
This commit is contained in:
Owen W. Taylor
2013-02-14 13:40:55 -05:00
parent aeb589c176
commit 5876f2e3e5
6 changed files with 66 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
src/core/window-private.h
View File

@@ -356,15 +356,6 @@ struct _MetaWindow
* also handles application frames */
guint extended_sync_request_counter : 1;
/* if TRUE, we still need to send a _NET_WM_FRAME_DRAWN message for the
* last update the sync request counter */
guint needs_frame_drawn : 1;
/* if TRUE, the frame that was just drawn was drawn without any delay
* on the client's part and thus is high-priority - if we add delay
* we might cause the client to miss it's target frame rate */
guint no_delay_frame : 1;
/* Note: can be NULL */
GSList *struts;

14
src/core/window.c
View File

@@ -9510,11 +9510,13 @@ void
meta_window_update_sync_request_counter (MetaWindow *window,
gint64 new_counter_value)
{
if (window->extended_sync_request_counter &&
new_counter_value % 2 == 0)
gboolean needs_frame_drawn = FALSE;
gboolean no_delay_frame = FALSE;
if (window->extended_sync_request_counter && new_counter_value % 2 == 0)
{
window->needs_frame_drawn = TRUE;
window->no_delay_frame = new_counter_value == window->sync_request_serial + 1;
needs_frame_drawn = TRUE;
no_delay_frame = new_counter_value == window->sync_request_serial + 1;
}
window->sync_request_serial = new_counter_value;
@@ -9547,6 +9549,10 @@ meta_window_update_sync_request_counter (MetaWindow *window,
window->display->grab_latest_motion_y,
TRUE);
}
if (needs_frame_drawn)
meta_compositor_queue_frame_drawn (window->display->compositor, window,
no_delay_frame);
}
#endif /* HAVE_XSYNC */