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glamor: check for non NULL pixmap at close_screen

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DDX such as Xorg, Xwayland & Xephyr do not destroy the pixmap before
they call into CloseScreen. At the same time Xvfb (support for glamor
coming with later commit) do.

As such the pixmap will be NULL and we'll crash out.

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
This commit is contained in:
Emil Velikov 2019-07-19 10:53:19 +01:00 • committed by Emil Velikov
parent 7667180fb9
commit 744c419cb4
1 changed files with 5 additions and 1 deletions
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6
glamor/glamor.c
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@ -927,7 +927,11 @@ glamor_close_screen(ScreenPtr screen)
ps->Glyphs = glamor_priv->saved_procs.glyphs;
screen_pixmap = screen->GetScreenPixmap(screen);
glamor_pixmap_destroy_fbo(screen_pixmap);
/* For DDX like Xwayland and Xorg, the pixmap is not destroyed so
* we should do so here.
*/
if (screen_pixmap)
glamor_pixmap_destroy_fbo(screen_pixmap);
glamor_release_screen_priv(screen);