X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=lift_gamma_gain_effect.h;h=bd1ec16a6d8743e6dfa83cd9848e78b959636a7c;hp=36f6a77370461c2c66b8d6b5e60b11e298c21df4;hb=ac040289928cdf3554ce884575afab17565e6c67;hpb=b10c546f579c7ccb5939161e61a71cd18a3f9bbd

diff --git a/lift_gamma_gain_effect.h b/lift_gamma_gain_effect.h
index 36f6a77..bd1ec16 100644
--- a/lift_gamma_gain_effect.h
+++ b/lift_gamma_gain_effect.h
@@ -20,12 +20,16 @@
 // Also, gamma is a case where we would not want premultiplied alpha.
 // Thus, we have to divide away alpha first, and then re-multiply it back later.
 
+#include <GL/glew.h>
+#include <string>
+
 #include "effect.h"
 
 class LiftGammaGainEffect : public Effect {
 public:
 	LiftGammaGainEffect();
 	virtual std::string effect_type_id() const { return "LiftGammaGainEffect"; }
+	virtual AlphaHandling alpha_handling() const { return INPUT_PREMULTIPLIED_ALPHA_KEEP_BLANK; }
 	std::string output_fragment_shader();
 
 	void set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num);