[FFmpeg-cvslog] doc/filters: add one more blend example

[Paul B Mahol]

ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Sun Sep  3 20:00:08 2017 +0200| [05b1c606870cc4646da8197a86e9af5301654499] | committer: Paul B Mahol

doc/filters: add one more blend example

Signed-off-by: Paul B Mahol <onemda at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=05b1c606870cc4646da8197a86e9af5301654499
---

 doc/filters.texi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/doc/filters.texi b/doc/filters.texi
index abc3a0cae8..710294860e 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -4995,6 +4995,12 @@ blend=all_expr='A*(if(gte(T,10),1,T/10))+B*(1-(if(gte(T,10),1,T/10)))'
 @end example
 
 @item
+Apply linear horizontal transition from top layer to bottom layer:
+ at example
+blend=all_expr='A*(X/W)+B*(1-X/W)'
+ at end example
+
+ at item
 Apply 1x1 checkerboard effect:
 @example
 blend=all_expr='if(eq(mod(X,2),mod(Y,2)),A,B)'