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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.
This commit is contained in:
Michel Dänzer 2019-01-29 18:59:09 +01:00 committed by Adam Jackson
parent ff56048855
commit a093a88531
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 */