Michel Dänzer <mic...@daenzer.net> writes:
> From: Michel Dänzer <michel.daen...@amd.com>
>
> present_unflip may be called several times from present_check_flip_window
> during the same unflip. We can only copy to the screen pixmap the first
> time, otherwise we may scribble over other windows. The flip pixmap
> contents don't get updated after the first time anyway.
>
> Fixes at least the following problems, which were introduced by commit
> 806470b9 ("present: Copy unflip contents back to the Screen Pixmap"):
>
> On xfwm4 without compositing, run glxgears and put its window into
> fullscreen mode to start flipping. While in fullscreen, open the xfwm4
> window menu by pressing Alt-Space. The window menu was invisible most
> of the time because it was getting scribbled over by a repeated unflip
> copy.
>
> When switching a flipping window out of fullscreen, a repeated unflip
> copy could leave artifacts of the flip pixmap on the desktop.
>
> Signed-off-by: Michel Dänzer <michel.daen...@amd.com>
Reviewed-by: Keith Packard <kei...@keithp.com>
> + /* Update the screen pixmap with the current flip pixmap contents
> + * Only do this the first time for a particular unflip operation, or
> + * we'll probably scribble over other windows
> + */
> + if (screen->GetWindowPixmap(screen->root) == screen_priv->flip_pixmap) {
> + present_copy_region(&pixmap->drawable, screen_priv->flip_pixmap,
> + NULL, 0, 0);
> + }
> +
This removes the check for flip_pixmap && flip_window, but the
flip_pixmap check is not needed as you're checking it against the root
pixmap which is never NULL, and the check for flip_window was redundant
before as it was always set when flip_pixmap was set.
--
-keith
signature.asc
Description: PGP signature
_______________________________________________ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: https://lists.x.org/mailman/listinfo/xorg-devel
