[FFmpeg-cvslog] avfilter/vf_v360: fix small artifacts with tetrahedron inputs

[Paul B Mahol]

ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Thu Jan 23 10:31:22 2020 +0100| [05d3d09cf5fe5e1aec4ba6107a2da543962d6b6a] | committer: Paul B Mahol

avfilter/vf_v360: fix small artifacts with tetrahedron inputs

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=05d3d09cf5fe5e1aec4ba6107a2da543962d6b6a
---

 libavfilter/vf_v360.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/libavfilter/vf_v360.c b/libavfilter/vf_v360.c
index 1173b33ae1..39dd07af6e 100644
--- a/libavfilter/vf_v360.c
+++ b/libavfilter/vf_v360.c
@@ -2656,8 +2656,8 @@ static void xyz_to_tetrahedron(const V360Context *s,
         uf = 0.75f - 0.25f * x;
     }
 
-    uf *= width  - 1;
-    vf *= height - 1;
+    uf *= width;
+    vf *= height;
 
     ui = floorf(uf);
     vi = floorf(vf);
@@ -2667,7 +2667,7 @@ static void xyz_to_tetrahedron(const V360Context *s,
 
     for (int i = -1; i < 3; i++) {
         for (int j = -1; j < 3; j++) {
-            us[i + 1][j + 1] = av_clip(ui + j, 0, width  - 1);
+            us[i + 1][j + 1] = mod(ui + j, width);
             vs[i + 1][j + 1] = av_clip(vi + i, 0, height - 1);
         }
     }