From 9990cb16d3fd1ae8b38da2f3b2563d8496d5e28a Mon Sep 17 00:00:00 2001
From: Paul B Mahol <onemda@gmail.com>
Date: Sat, 25 Jan 2020 13:26:51 +0100
Subject: [PATCH] avfilter/vf_v360: mark another hemisphere not visible for
 flat input format

---
 libavfilter/vf_v360.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavfilter/vf_v360.c b/libavfilter/vf_v360.c
index 2fc9d222b6..6d476c6392 100644
--- a/libavfilter/vf_v360.c
+++ b/libavfilter/vf_v360.c
@@ -1766,7 +1766,7 @@ static int xyz_to_flat(const V360Context *s,
     ui = floorf(uf);
     vi = floorf(vf);
 
-    visible = vi >= 0 && vi < height && ui >= 0 && ui < width;
+    visible = vi >= 0 && vi < height && ui >= 0 && ui < width && zf >= 0.f;
 
     *du = uf - ui;
     *dv = vf - vi;