diff --git a/present/present.c b/present/present.c index 5900c2289..beb01dcbd 100644 --- a/present/present.c +++ b/present/present.c @@ -836,19 +836,20 @@ present_pixmap(WindowPtr window, vblank->notifies = notifies; vblank->num_notifies = num_notifies; - if (!(options & PresentOptionAsync)) - vblank->sync_flip = TRUE; - - if (!(options & PresentOptionCopy) && - !((options & PresentOptionAsync) && - (!screen_priv->info || - !(screen_priv->info->capabilities & PresentCapabilityAsync))) && - pixmap != NULL && - present_check_flip (target_crtc, window, pixmap, vblank->sync_flip, valid, x_off, y_off)) - { - vblank->flip = TRUE; - if (vblank->sync_flip) + if (pixmap != NULL && + !(options & PresentOptionCopy) && + screen_priv->info) { + if (target_msc > crtc_msc && + present_check_flip (target_crtc, window, pixmap, TRUE, valid, x_off, y_off)) + { + vblank->flip = TRUE; + vblank->sync_flip = TRUE; target_msc--; + } else if ((screen_priv->info->capabilities & PresentCapabilityAsync) && + present_check_flip (target_crtc, window, pixmap, FALSE, valid, x_off, y_off)) + { + vblank->flip = TRUE; + } } if (wait_fence) {