X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=luma_mix_effect.h;h=3ff81bf6b1641794c2d6db379027d50f0737615e;hp=8bd3c506bc8bbc0c1e206cdf215af666a02037b2;hb=90ac46cdc5845432df13385f946c63b5496c685e;hpb=36d9ece323c89dbd553644c80fea449c5dd1e685

diff --git a/luma_mix_effect.h b/luma_mix_effect.h
index 8bd3c50..3ff81bf 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,
@@ -24,10 +26,14 @@ public:
 
 	virtual bool needs_srgb_primaries() const { return false; }
 	virtual unsigned num_inputs() const { return 3; }
+	virtual bool one_to_one_sampling() const { return true; }
 	virtual AlphaHandling alpha_handling() const { return INPUT_PREMULTIPLIED_ALPHA_KEEP_BLANK; }
 
 private:
 	float transition_width, progress;
+	int inverse;  // 0 or 1.
+	bool uniform_inverse;
+	float uniform_progress_mul_w_plus_one;
 };
 
 }  // namespace movit