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window-actor/x11: Get frame rect from the buffer size

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When building the frame mask, the current reported frame size may not
match when is actually on screen if the buffer has not been updated
yet.

So instead of getting the frame size from the meta window, deduce it
from the texture size.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/1009
This commit is contained in:
Olivier Fourdan 2020-01-17 18:11:03 +01:00 committed by Robert Mader
parent 1000ebe203
commit 1ce933e281
1 changed files with 10 additions and 1 deletions
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11
src/compositor/meta-window-actor-x11.c
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@ -892,7 +892,16 @@ build_and_scan_frame_mask (MetaWindowActorX11 *actor_x11,
cairo_rectangle_int_t rect = { 0, 0, tex_width, tex_height };
cairo_rectangle_int_t frame_rect;
meta_window_get_frame_rect (window, &frame_rect);
/* If we update the shape regardless of the frozen state of the actor,
* as with Xwayland to avoid the black shadow effect, we ought to base
* the frame size on the buffer size rather than the reported window's
* frame size, as the buffer may not have been committed yet at this
* point.
*/
if (meta_window_x11_always_update_shape (window))
meta_window_x11_buffer_rect_to_frame_rect (window, &rect, &frame_rect);
else
meta_window_get_frame_rect (window, &frame_rect);
/* Make sure we don't paint the frame over the client window. */
frame_paint_region = cairo_region_create_rectangle (&rect);