fix distortion in smoothness

[melted] / src / modules / core / transition_luma.c

diff --git a/src/modules/core/transition_luma.c b/src/modules/core/transition_luma.c
index bba678d..d4d4074 100644 (file)
--- a/src/modules/core/transition_luma.c
+++ b/src/modules/core/transition_luma.c
@@ -92,7 +92,7 @@ static inline int dissolve_yuv( mlt_frame this, mlt_frame that, float weight, in
 
 // image processing functions
 
-static inline int32_t smoothstep( int32_t edge1, int32_t edge2, int32_t a )
+static inline int32_t smoothstep( int32_t edge1, int32_t edge2, uint32_t a )
 {
        if ( a < edge1 )
                return 0;