X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fblend.h;h=e7b291e617dab5c2044e787c99ee7a09a7dfcac5;hp=1ba43ceb272eba972430bc4fee94cd786bdcbce4;hb=6eb1cf196dbe5a2c39b29b49b6901ae7d2b4e803;hpb=80977251da90a6878b82d143c22b8335284d3b3e

diff --git a/source/blend.h b/source/blend.h
index 1ba43ceb..e7b291e6 100644
--- a/source/blend.h
+++ b/source/blend.h
@@ -1,6 +1,7 @@
 #ifndef MSP_GL_BLEND_H_
 #define MSP_GL_BLEND_H_
 
+#include <msp/strings/lexicalcast.h>
 #include "bindable.h"
 #include "gl.h"
 #include <msp/gl/extensions/ext_blend_minmax.h>
@@ -55,8 +56,13 @@ public:
 	static void unbind();
 
 	static const Blend &alpha();
+	static const Blend &additive();
+	static const Blend &additive_alpha();
 };
 
+void operator>>(const LexicalConverter &, BlendFactor &);
+void operator<<(LexicalConverter &, BlendFactor);
+
 } // namespace GL
 } // namespace Msp