From: Mikko Rasa <tdb@tdb.fi>
Date: Tue, 6 Dec 2016 21:33:17 +0000 (+0200)
Subject: Add some more premade blend modes
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=e69287d99126a20326d713c9a44360f15c94d137

Add some more premade blend modes
---

diff --git a/source/blend.cpp b/source/blend.cpp
index 184d5ad5..df4043e2 100644
--- a/source/blend.cpp
+++ b/source/blend.cpp
@@ -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
diff --git a/source/blend.h b/source/blend.h
index 1ba43ceb..41567c53 100644
--- a/source/blend.h
+++ b/source/blend.h
@@ -55,6 +55,8 @@ public:
 	static void unbind();
 
 	static const Blend &alpha();
+	static const Blend &additive();
+	static const Blend &additive_alpha();
 };
 
 } // namespace GL