X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fblend.cpp;h=b2f59e17c5cb57250f20aba14ca158e81c818285;hb=9a9d3517dcfdba5206d9c73ce211feac8e402bc2;hp=854b2032d4e26ea31168beaf141790d6ffdb536f;hpb=dc1d1159a61f378bda11e5989ad694a86b9a3c77;p=libs%2Fgl.git

diff --git a/source/blend.cpp b/source/blend.cpp
index 854b2032..b2f59e17 100644
--- a/source/blend.cpp
+++ b/source/blend.cpp
@@ -1,7 +1,7 @@
 /* $Id$
 
 This file is part of libmspgl
-Copyright © 2008  Mikko Rasa, Mikkosoft Productions
+Copyright © 2008, 2010  Mikko Rasa, Mikkosoft Productions
 Distributed under the LGPL
 */
 
@@ -12,15 +12,48 @@ Distributed under the LGPL
 namespace Msp {
 namespace GL {
 
-void blend_equation(BlendEquation eq)
+Blend::Blend():
+	eq(ADD),
+	src_factor(ONE),
+	dst_factor(ZERO)
+{ }
+
+Blend::Blend(BlendFactor sf, BlendFactor df):
+	eq(ADD),
+	src_factor(sf),
+	dst_factor(df)
+{ }
+
+Blend::Blend(BlendEquation e, BlendFactor sf, BlendFactor df):
+	eq(e),
+	src_factor(sf),
+	dst_factor(df)
+{
+	if(eq!=ADD)
+		static RequireVersion _ver(1, 2);
+}
+
+void Blend::bind() const
+{
+	if(set_current(this))
+	{
+		glEnable(GL_BLEND);
+		if(glBlendEquation)
+			glBlendEquation(eq);
+		glBlendFunc(src_factor, dst_factor);
+	}
+}
+
+void Blend::unbind()
 {
-	static RequireVersion _ver(1, 2);
-	glBlendEquation(eq);
+	if(set_current(0))
+		glDisable(GL_BLEND);
 }
 
-void blend_func(BlendFactor src, BlendFactor dst)
+const Blend &Blend::alpha()
 {
-	glBlendFunc(src, dst);
+	static Blend blend(SRC_ALPHA, ONE_MINUS_SRC_ALPHA);
+	return blend;
 }
 
 } // namespace GL