X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=luma_mix_effect.h;h=ce890dfb557e887e6059d4178738fc5d1acad17c;hp=8bd3c506bc8bbc0c1e206cdf215af666a02037b2;hb=bbbf278f6f2847010a7c41caafa08d36d2099794;hpb=86cdfc6ea4318cfe6fd5d4bef51daf00f480973a

diff --git a/luma_mix_effect.h b/luma_mix_effect.h
index 8bd3c50..ce890df 100644
--- a/luma_mix_effect.h
+++ b/luma_mix_effect.h
@@ -2,8 +2,10 @@
 #define _MOVIT_LUMA_MIX_EFFECT_H 1
 
 // Fade between two images based on a third monochrome one; lighter pixels
-// will be faded before darker pixels. This allows a wide range of different
-// video wipes implemented using a single effect.
+// will be faded before darker pixels (unless the inverse flag is set,
+// in which case darker pixels will be faded before lighter pixels).
+// This allows a wide range of different video wipes implemented using
+// a single effect.
 //
 // Note that despite the name, the third input's _red_ channel is what's used
 // for transitions; there is no luma calculation done. If you need that,
@@ -28,6 +30,7 @@ public:
 
 private:
 	float transition_width, progress;
+	int inverse;  // 0 or 1.
 };
 
 }  // namespace movit