X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fcolorcurve.h;h=d7589cb565b8bacd4f63c0f60d672b294ec7d9bf;hb=9afdf8a0813de5c4d5277b0ccbfe86051af5624e;hp=74a19d04bc916878635d23dcaf24708be6989d36;hpb=a86623004ba91baef76dac9275e9b79366acce16;p=libs%2Fgl.git

diff --git a/source/colorcurve.h b/source/colorcurve.h
index 74a19d04..d7589cb5 100644
--- a/source/colorcurve.h
+++ b/source/colorcurve.h
@@ -1,9 +1,10 @@
-#ifndef COLORCURVE_H_
-#define COLORCURVE_H_
+#ifndef MSP_GL_COLORCURVE_H_
+#define MSP_GL_COLORCURVE_H_
 
 #include "postprocessor.h"
 #include "program.h"
 #include "programdata.h"
+#include "texture1d.h"
 
 namespace Msp {
 namespace GL {
@@ -13,13 +14,16 @@ 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 &);
 };