X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fcolorcurve.h;h=f66ff976d7a0d06dc020980239b9adcf0676d008;hb=8dbd6316d277d2f9cbf85e7e61f2541421e01292;hp=82a8526f2f113a91bec2e7217719825b1d6ea311;hpb=9a54442d865974ac8785988e7e740480e72ab24c;p=libs%2Fgl.git

diff --git a/source/colorcurve.h b/source/colorcurve.h
index 82a8526f..f66ff976 100644
--- a/source/colorcurve.h
+++ b/source/colorcurve.h
@@ -4,22 +4,26 @@
 #include "postprocessor.h"
 #include "program.h"
 #include "programdata.h"
+#include "texture1d.h"
 
 namespace Msp {
 namespace GL {
 
 /**
-Processes oversaturated colors to preserve hues.  When one color component 
+Processes oversaturated colors to preserve hues.  When one color component
 exceeds 1.0, the others are scaled towards white.  A transition curve is also
 applied near 1.0 to prevent the abrupt change in the gradient.
 
-Only makes sense when used in an HDR framebuffer.
+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
+space and converting to sRGB for display.
 */
 class ColorCurve: public PostProcessor
 {
 private:
 	Program shprog;
 	ProgramData shdata;
+	Texture1D curve;
 	const Mesh &quad;
 
 public:
@@ -33,6 +37,17 @@ public:
 	saturated value. */
 	void set_brightness(float);
 
+	/** Sets the gamma value used for mapping output colors.  Allowed range is
+	from 0.1 to 10. */
+	void set_gamma(float);
+
+	/** Sets output mapping to sRGB.  This is almost, but not exactly equivalent
+	to set_gamma(2.2). */
+	void set_srgb();
+
+	/// Sets output mapping to linear.  This is equivalent to set_gamma(1).
+	void set_linear();
+
 	virtual void render(const Texture2D &, const Texture2D &);
 };