X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=gamma_expansion_effect.h;h=043731baf15ef48c8812d1ec6fb6e5234a5b87a3;hp=ce999902f7be24b4ddace89ea12384cb7dbf5def;hb=fc55857d9ccf1edcc141fa0853a8bf2d6b40b4dc;hpb=b10c546f579c7ccb5939161e61a71cd18a3f9bbd

diff --git a/gamma_expansion_effect.h b/gamma_expansion_effect.h
index ce99990..043731b 100644
--- a/gamma_expansion_effect.h
+++ b/gamma_expansion_effect.h
@@ -13,8 +13,12 @@
 #define EXPANSION_CURVE_SIZE 256
 
 class GammaExpansionEffect : public Effect {
-public:
+private:
+	// Should not be instantiated by end users.
 	GammaExpansionEffect();
+	friend class EffectChain;
+
+public:
 	virtual std::string effect_type_id() const { return "GammaExpansionEffect"; }
 	std::string output_fragment_shader();