+#ifndef _ALPHA_DIVISION_EFFECT_H
+#define _ALPHA_DIVISION_EFFECT_H 1
+
+// Convert premultiplied alpha to postmultiplied alpha, simply by multiplying.
+
+#include "effect.h"
+
+class AlphaDivisionEffect : public Effect {
+public:
+ AlphaDivisionEffect() {}
+ virtual std::string effect_type_id() const { return "AlphaDivisionEffect"; }
+ std::string output_fragment_shader();
+};
+
+#endif // !defined(_ALPHA_DIVISION_EFFECT_H)