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present/wnmd: Allow flipping if the window pixmap matches the toplevel's 

Instead of testing window->redirectDraw.

With Xwayland, the toplevel window is always redirected, so this would
unnecessarily preclude flipping there in some cases, e.g. with wlroots
based Wayland compositors or with fullscreen X11 windows in weston.

Fixes issue #631.
(Cherry picked from commit a093a88531)
This commit is contained in:
Michel Dänzer 2019-02-22 11:16:36 +01:00 committed by Michel Dänzer
parent e5984241ab
commit 01a03a476a
1 changed files with 2 additions and 2 deletions
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4
present/present_wnmd.c
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@ -270,8 +270,8 @@ present_wnmd_check_flip(RRCrtcPtr crtc,
if (!screen_priv->wnmd_info->flip)
return FALSE;
/* Don't flip redirected windows */
if (window->redirectDraw != RedirectDrawNone)
/* Can't flip redirected child windows */
if (screen->GetWindowPixmap(window) != screen->GetWindowPixmap(toplvl_window))
return FALSE;
/* Source pixmap must align with window exactly */