Implement GammaExpansionEffect using ALU ops instead of texture lookups.

[movit] / saturation_effect.h

diff --git a/saturation_effect.h b/saturation_effect.h
index 4dd72e4da09b4b0805ecf6d6d7b0104e68f9cd1e..f4d69e680ddda7b03a730a0724452d72f6e8394f 100644 (file)
--- a/saturation_effect.h
+++ b/saturation_effect.h
@@ -1,5 +1,5 @@
-#ifndef _SATURATION_EFFECT_H
-#define _SATURATION_EFFECT_H 1
+#ifndef _MOVIT_SATURATION_EFFECT_H
+#define _MOVIT_SATURATION_EFFECT_H 1
 
 // A simple desaturation/saturation effect. We use the Rec. 709
 // definition of luminance (in linear light, of course) and linearly
@@ -7,16 +7,19 @@
 // (saturation=1). Extrapolating that curve further (ie., saturation > 1)
 // gives us increased saturation if so desired.
 
+#include <string>
+
 #include "effect.h"
 
 class SaturationEffect : public Effect {
 public:
        SaturationEffect();
        virtual std::string effect_type_id() const { return "SaturationEffect"; }
+       virtual AlphaHandling alpha_handling() const { return DONT_CARE_ALPHA_TYPE; }
        std::string output_fragment_shader();
 
 private:
        float saturation;
 };
 
-#endif // !defined(_SATURATION_EFFECT_H)
+#endif // !defined(_MOVIT_SATURATION_EFFECT_H)