From 55b085707adcd3701ed5f8b6b9953ed90ecdb59a Mon Sep 17 00:00:00 2001
From: Dudemanguy <random342@airmail.cc>
Date: Wed, 24 Nov 2021 22:43:43 -0600
Subject: wayland: initialize presentation time values as 0

Better to avoid any wonky calculations on startup with garbage values.
The others end up being derived from last_ust/last_msc. refresh_interval
is referenced exactly once and could, in theory, result in some terribly
erroneous vblank time.
---
 video/out/wayland_common.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/video/out/wayland_common.c b/video/out/wayland_common.c
index cae0c6a5d3..975b3eaba0 100644
--- a/video/out/wayland_common.c
+++ b/video/out/wayland_common.c
@@ -1726,6 +1726,9 @@ int vo_wayland_init(struct vo *vo)
     }
 
     if (wl->presentation) {
+        wl->last_ust = 0;
+        wl->last_msc = 0;
+        wl->refresh_interval = 0;
         wl->sync = talloc_zero_array(wl, struct vo_wayland_sync, 1);
         struct vo_wayland_sync sync = {0, 0, 0, 0};
         wl->sync[0] = sync;
-- 
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