X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=gamma_compression_effect.h;h=2744d2ddf65f809e96a301cdcb0e016e499c8f25;hb=19fde87d1ba773650754dc1f9d9455107d4a7882;hp=03cbb24133417da2a3da336d60b39edc04b4e781;hpb=f99ad333a7acbb6c8c995dbb036484ae8940c490;p=movit

diff --git a/gamma_compression_effect.h b/gamma_compression_effect.h
index 03cbb24..2744d2d 100644
--- a/gamma_compression_effect.h
+++ b/gamma_compression_effect.h
@@ -13,13 +13,21 @@
 #define COMPRESSION_CURVE_SIZE 4096
 
 class GammaCompressionEffect : public Effect {
-public:
+private:
+	// Should not be instantiated by end users.
 	GammaCompressionEffect();
+	friend class EffectChain;
+
+public:
 	virtual std::string effect_type_id() const { return "GammaCompressionEffect"; }
 	std::string output_fragment_shader();
 
 	virtual bool needs_srgb_primaries() const { return false; }
 
+	// Actually needs postmultiplied input as well as outputting it.
+	// EffectChain will take care of that.
+	virtual AlphaHandling alpha_handling() const { return OUTPUT_ALPHA_POSTMULTIPLIED; }
+
 private:
 	GammaCurve destination_curve;
 	float compression_curve[COMPRESSION_CURVE_SIZE];