X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Feffects%2Fcolorcurve.h;h=ee19a56f3835fadb225b56e48016d4f23b272f1a;hp=e34834aa4e72bf83311b8b9bc41fd657c1d2ba83;hb=55e3f2d494d939280a4ea48676fd17ca2342b457;hpb=18449fc11c620be7b3115f28a5edfb57eb5985ef

diff --git a/source/effects/colorcurve.h b/source/effects/colorcurve.h
index e34834aa..ee19a56f 100644
--- a/source/effects/colorcurve.h
+++ b/source/effects/colorcurve.h
@@ -58,7 +58,9 @@ public:
 	image, negative values darken it.  Zero is neutral. */
 	void set_exposure_adjust(float);
 
-	/** Sets the exponent of the */
+	/** Sets the exponent of the brightness response curve.  It must be greater
+	than zero and at most one.  A value of one gives a linear response; closer
+	to zero results in a more gentle curve. */
 	void set_brightness_response(float);
 
 	/** Sets the gamma value used for mapping output colors.  Allowed range is