X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fblend.h;fp=source%2Fblend.h;h=c4c78d7d51e516fe9e7278c0983dad6446cf6f12;hp=27e76d6469ccb7ea6ab52aee8cb00e29dcdef5a5;hb=f17794d55923d4fb4f63e9d082d8d84a735a04e8;hpb=02dad9779326e5b8acc1fddbaec3a2f36da15c16

diff --git a/source/blend.h b/source/blend.h
index 27e76d64..c4c78d7d 100644
--- a/source/blend.h
+++ b/source/blend.h
@@ -1,13 +1,14 @@
 /* $Id$
 
 This file is part of libmspgl
-Copyright © 2008  Mikko Rasa, Mikkosoft Productions
+Copyright © 2008, 2010  Mikko Rasa, Mikkosoft Productions
 Distributed under the LGPL
 */
 
 #ifndef MSP_GL_BLEND_H_
 #define MSP_GL_BLEND_H_
 
+#include "bindable.h"
 #include "gl.h"
 
 namespace Msp {
@@ -45,6 +46,27 @@ enum BlendFactor
 	ONE_MINUS_CONSTANT_ALPHA = GL_ONE_MINUS_CONSTANT_ALPHA
 };
 
+/**
+Blends incoming fragments with those already in the framebuffer.
+*/
+class Blend: public Bindable<Blend>
+{
+private:
+	BlendEquation eq;
+	BlendFactor src_factor;
+	BlendFactor dst_factor;
+
+public:
+	Blend();
+	Blend(BlendFactor, BlendFactor);
+	Blend(BlendEquation, BlendFactor, BlendFactor);
+
+	void bind() const;
+
+	static const Blend &alpha();
+	static void unbind();
+};
+
 void blend_equation(BlendEquation eq);
 void blend_func(BlendFactor src, BlendFactor dst);