X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fblend.cpp;h=df4043e29fcfc228a557a7a5f54238d1f302f5e2;hb=e69287d99126a20326d713c9a44360f15c94d137;hp=9c87aeb5461d989a864a37c2dd19da4f96167461;hpb=619aae12e01f25e79626a94c973927e5599e99a5;p=libs%2Fgl.git

diff --git a/source/blend.cpp b/source/blend.cpp
index 9c87aeb5..df4043e2 100644
--- a/source/blend.cpp
+++ b/source/blend.cpp
@@ -33,7 +33,7 @@ void Blend::bind() const
 	if(set_current(this))
 	{
 		glEnable(GL_BLEND);
-		if(glBlendEquation)
+		if(EXT_blend_minmax)
 			glBlendEquation(eq);
 		glBlendFunc(src_factor, dst_factor);
 	}
@@ -51,5 +51,17 @@ const Blend &Blend::alpha()
 	return blend;
 }
 
+const Blend &Blend::additive()
+{
+	static Blend blend(ONE, ONE);
+	return blend;
+}
+
+const Blend &Blend::additive_alpha()
+{
+	static Blend blend(SRC_ALPHA, ONE);
+	return blend;
+}
+
 } // namespace GL
 } // namespace Msp