Commit 04ef4489 authored by Owen W. Taylor's avatar Owen W. Taylor
Browse files

Handle _NET_WM_SYNC_REQUEST_COUNTER updates without redraw

It's possible that a client might update the (extended)
_NET_WM_SYNC_REQUEST_COUNTER counter twice without actually drawing
anything. In that case, we still should send a _NET_WM_FRAME_DRAWN
message since it's hard for a client to know every case in which
no damage is generated. For now, do it the easy way by forcing a
stage repaint.
parent 790bfcad
......@@ -942,6 +942,19 @@ meta_window_actor_thaw (MetaWindowActor *self)
* don't know what real damage has happened. */
if (self->priv->needs_damage_all)
meta_window_actor_damage_all (self);
else if (self->priv->frame_drawn_serial != 0)
/* A frame was marked by the client without actually doing any damage;
* we need to make sure that the pre_paint/post_paint functions
* get called, enabling us to send a _NET_WM_FRAME_DRAWN. We do a
* 1-pixel redraw to get consistent timing with non-empty frames.
if (self->priv->mapped && !self->priv->needs_pixmap)
const cairo_rectangle_int_t clip = { 0, 0, 1, 1 };
clutter_actor_queue_redraw_with_clip (self->priv->actor, &clip);
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