X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fcore%2Fblend.h;h=a1180050163b31dbd009acd1987d27c8507fb5b3;hb=bae374a3cda6a1b59f36016624ef518bf2676355;hp=ad7ba241bd1b1028e7e1bea45b5477f6b66245f6;hpb=e6077f9f25b794c174e1017c2c0763e77a6fddda;p=libs%2Fgl.git

diff --git a/source/core/blend.h b/source/core/blend.h
index ad7ba241..a1180050 100644
--- a/source/core/blend.h
+++ b/source/core/blend.h
@@ -35,6 +35,16 @@ enum BlendFactor
 	ONE_MINUS_CONSTANT_ALPHA
 };
 
+enum ColorWriteMask
+{
+	WRITE_NONE = 0,
+	WRITE_RED = 1,
+	WRITE_GREEN = 2,
+	WRITE_BLUE = 4,
+	WRITE_ALPHA = 8,
+	WRITE_ALL = 15
+};
+
 /**
 Blends incoming fragments with those already in the framebuffer.
 */
@@ -56,12 +66,17 @@ struct Blend
 	BlendFactor src_factor;
 	BlendFactor dst_factor;
 	Color constant;
+	ColorWriteMask write_mask;
 
 	Blend();
 	Blend(BlendFactor, BlendFactor);
 	Blend(BlendEquation, BlendFactor, BlendFactor);
 };
 
+
+inline ColorWriteMask operator|(ColorWriteMask m1, ColorWriteMask m2)
+{ return static_cast<ColorWriteMask>(static_cast<int>(m1)|static_cast<int>(m2)); }
+
 unsigned get_gl_blend_equation(BlendEquation);
 unsigned get_gl_blend_factor(BlendFactor);
 
@@ -71,6 +86,9 @@ void operator<<(LexicalConverter &, BlendEquation);
 void operator>>(const LexicalConverter &, BlendFactor &);
 void operator<<(LexicalConverter &, BlendFactor);
 
+void operator>>(const LexicalConverter &, ColorWriteMask &);
+void operator<<(LexicalConverter &, ColorWriteMask);
+
 } // namespace GL
 } // namespace Msp