X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fblend.cpp;h=df4043e29fcfc228a557a7a5f54238d1f302f5e2;hb=e69287d99126a20326d713c9a44360f15c94d137;hp=cecd562dc1019f389e151049b94d4c01e55b2623;hpb=6afbace895a7bbcf216ab8e48280ea0303ab5892;p=libs%2Fgl.git

diff --git a/source/blend.cpp b/source/blend.cpp
index cecd562d..df4043e2 100644
--- a/source/blend.cpp
+++ b/source/blend.cpp
@@ -1,6 +1,6 @@
+#include <msp/gl/extensions/ext_blend_minmax.h>
+#include <msp/gl/extensions/ext_blend_subtract.h>
 #include "blend.h"
-#include "ext_blend_minmax.h"
-#include "ext_blend_subtract.h"
 
 namespace Msp {
 namespace GL {
@@ -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