X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=gamma_compression_effect.h;h=f34bca02eb76f51c633b237a789d9f5f18e418e3;hp=03cbb24133417da2a3da336d60b39edc04b4e781;hb=37f56fcbe571b2322243f6de59494bf9e0cbb37a;hpb=f99ad333a7acbb6c8c995dbb036484ae8940c490

diff --git a/gamma_compression_effect.h b/gamma_compression_effect.h
index 03cbb24..f34bca0 100644
--- a/gamma_compression_effect.h
+++ b/gamma_compression_effect.h
@@ -7,19 +7,30 @@
 //
 // Currently supports sRGB and Rec. 601/709.
 
+#include <string>
+
 #include "effect.h"
 #include "effect_chain.h"
+#include "image_format.h"
 
 #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_POSTMULTIPLIED_ALPHA; }
+
 private:
 	GammaCurve destination_curve;
 	float compression_curve[COMPRESSION_CURVE_SIZE];