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present: Call present_restore_screen_pixmap from present_set_abort_flip

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After present_set_abort_flip, the screen pixmap will be used for all
screen drawing, so we need to restore the current flip pixmap contents
to the screen pixmap here as well.

Improves flashing / stutter e.g. when something like a popup menu appears
on top of a flipping fullscreen window or when switching out of
fullscreen.

Note that this means present_set_abort_flip now relies on screen->root
being non-NULL, but that's already the case in other present code.

Reviewed-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Michel Dänzer 2016-02-18 17:33:19 +09:00 committed by Michel Dänzer
parent 4611e902c2
commit 1bee4e254c
1 changed files with 14 additions and 14 deletions
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28
present/present.c
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@ -418,8 +418,16 @@ present_restore_screen_pixmap(ScreenPtr screen)
{
present_screen_priv_ptr screen_priv = present_screen_priv(screen);
PixmapPtr screen_pixmap = (*screen->GetScreenPixmap)(screen);
PixmapPtr flip_pixmap = screen_priv->flip_pixmap;
WindowPtr flip_window = screen_priv->flip_window;
PixmapPtr flip_pixmap;
WindowPtr flip_window;
if (screen_priv->flip_pending) {
flip_window = screen_priv->flip_pending->window;
flip_pixmap = screen_priv->flip_pending->pixmap;
} else {
flip_window = screen_priv->flip_window;
flip_pixmap = screen_priv->flip_pixmap;
}
assert (flip_pixmap);
@ -430,6 +438,9 @@ present_restore_screen_pixmap(ScreenPtr screen)
if (screen->GetWindowPixmap(screen->root) == flip_pixmap)
present_copy_region(&screen_pixmap->drawable, flip_pixmap, NULL, 0, 0);
/* Switch back to using the screen pixmap now to avoid
* 2D applications drawing to the wrong pixmap.
*/
if (flip_window)
present_set_tree_pixmap(flip_window, flip_pixmap, screen_pixmap);
present_set_tree_pixmap(screen->root, NULL, screen_pixmap);
@ -439,19 +450,8 @@ static void
present_set_abort_flip(ScreenPtr screen)
{
present_screen_priv_ptr screen_priv = present_screen_priv(screen);
PixmapPtr pixmap = (*screen->GetScreenPixmap)(screen);
/* Switch back to using the screen pixmap now to avoid
* 2D applications drawing to the wrong pixmap.
*/
if (screen_priv->flip_window)
present_set_tree_pixmap(screen_priv->flip_window,
screen_priv->flip_pixmap,
pixmap);
if (screen->root)
present_set_tree_pixmap(screen->root, NULL, pixmap);
present_restore_screen_pixmap(screen);
screen_priv->flip_pending->abort_flip = TRUE;
}