X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Feffects%2Fcolorcurve.h;h=99263407d965bccaea891025a8ef7df035f67dea;hp=ee19a56f3835fadb225b56e48016d4f23b272f1a;hb=HEAD;hpb=55e3f2d494d939280a4ea48676fd17ca2342b457

diff --git a/source/effects/colorcurve.h b/source/effects/colorcurve.h
index ee19a56f..99263407 100644
--- a/source/effects/colorcurve.h
+++ b/source/effects/colorcurve.h
@@ -2,17 +2,21 @@
 #define MSP_GL_COLORCURVE_H_
 
 #include "postprocessor.h"
-#include "program.h"
 #include "programdata.h"
 #include "texture1d.h"
 
 namespace Msp {
 namespace GL {
 
+class Program;
+
 /**
-Processes oversaturated colors to preserve hues.  When one color component
-exceeds 1.0, the overflow is distributed to the other components, scaling the
-color towards white.
+Maps high dynamic range colors to 8-bit and applies gamma correction.
+
+An exponential curve (with exponent less than or equal to 1) is applied to
+simulate the response of the human eye.  If the maximum color component of the
+result exceeds 1, the overflow is distributed to the other components to
+increase the apparent brightness without changing the hue.
 
 Gamma or sRGB correction can also be applied to the output.  It can be used to
 improve color reproduction by performing lighting calculations in linear color
@@ -33,14 +37,12 @@ public:
 			void srgb();
 		};
 
-		float exposure_adjust;
-		float brightness_response;
-		float gamma;
-		bool srgb;
+		float exposure_adjust = 0.0f;
+		float brightness_response = 0.4f;
+		float gamma = 1.0f;
+		bool srgb = false;
 
-		Template();
-
-		virtual ColorCurve *create(Resources &, unsigned, unsigned) const;
+		virtual ColorCurve *create(unsigned, unsigned) const;
 	};
 
 private:
@@ -52,7 +54,7 @@ private:
 	const Sampler &nearest_sampler;
 
 public:
-	ColorCurve(Resources &);
+	ColorCurve();
 
 	/** Set exposure adjustment in EV units.  Positive values brighten the
 	image, negative values darken it.  Zero is neutral. */
@@ -75,6 +77,8 @@ public:
 	void set_linear();
 
 	virtual void render(Renderer &, const Texture2D &, const Texture2D &);
+
+	virtual void set_debug_name(const std::string &);
 };
 
 } // namespace GL