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doc/filters: add few more examples for blend filter 

Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2013-10-31 13:31:11 +00:00
parent 045214e3d9
commit 49287bbfd3
1 changed files with 18 additions and 0 deletions
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18
doc/filters.texi
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@ -2412,6 +2412,24 @@ Apply 1x1 checkerboard effect:
@example
blend=all_expr='if(eq(mod(X,2),mod(Y,2)),A,B)'
@end example
@item
Apply uncover left effect:
@example
blend=all_expr='if(gte(N*SW+X,W),A,B)'
@end example
@item
Apply uncover down effect:
@example
blend=all_expr='if(gte(Y-N*SH,0),A,B)'
@end example
@item
Apply uncover up-left effect:
@example
blend=all_expr='if(gte(T*SH*40+Y,H)*gte((T*40*SW+X)*W/H,W),A,B)'
@end example
@end itemize
@section boxblur