X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=gamma_expansion_effect.h;h=043731baf15ef48c8812d1ec6fb6e5234a5b87a3;hp=ce999902f7be24b4ddace89ea12384cb7dbf5def;hb=38dfb378427d1c97113ad7644c39f7695be84c49;hpb=545c9c70d0be03667a8d78da6be29836fa9c4f1d

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();