X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fcore%2Fblend.h;h=e04aef49c2474cc7be4c49382044518331a6c9a2;hb=641e5ebbda682a6df6f84a4627e3728dbcef3683;hp=e7b291e617dab5c2044e787c99ee7a09a7dfcac5;hpb=7aaec9a70b8d7733429bec043f8e33e02956f266;p=libs%2Fgl.git

diff --git a/source/core/blend.h b/source/core/blend.h
index e7b291e6..e04aef49 100644
--- a/source/core/blend.h
+++ b/source/core/blend.h
@@ -1,69 +1,94 @@
 #ifndef MSP_GL_BLEND_H_
 #define MSP_GL_BLEND_H_
 
+#include <msp/datafile/objectloader.h>
 #include <msp/strings/lexicalcast.h>
-#include "bindable.h"
-#include "gl.h"
-#include <msp/gl/extensions/ext_blend_minmax.h>
+#include "color.h"
 
 namespace Msp {
 namespace GL {
 
 enum BlendEquation
 {
-	ADD              = GL_FUNC_ADD,
-	SUBTRACT         = GL_FUNC_SUBTRACT,
-	REVERSE_SUBTRACT = GL_FUNC_REVERSE_SUBTRACT,
-	MIN              = GL_MIN,
-	MAX              = GL_MAX
+	ADD,
+	SUBTRACT,
+	REVERSE_SUBTRACT,
+	MIN,
+	MAX
 };
 
 enum BlendFactor
 {
-	ZERO = GL_ZERO,
-	ONE = GL_ONE,
-	SRC_COLOR = GL_SRC_COLOR,
-	ONE_MINUS_SRC_COLOR = GL_ONE_MINUS_SRC_COLOR,
-	SRC_ALPHA = GL_SRC_ALPHA,
-	ONE_MINUS_SRC_ALPHA = GL_ONE_MINUS_SRC_ALPHA,
-	DST_COLOR = GL_DST_COLOR,
-	ONE_MINUS_DST_COLOR = GL_ONE_MINUS_DST_COLOR,
-	DST_ALPHA = GL_DST_ALPHA,
-	ONE_MINUS_DST_ALPHA = GL_ONE_MINUS_DST_ALPHA,
-	CONSTANT_COLOR = GL_CONSTANT_COLOR,
-	ONE_MINUS_CONSTANT_COLOR = GL_ONE_MINUS_CONSTANT_COLOR,
-	CONSTANT_ALPHA = GL_CONSTANT_ALPHA,
-	ONE_MINUS_CONSTANT_ALPHA = GL_ONE_MINUS_CONSTANT_ALPHA
+	ZERO,
+	ONE,
+	SRC_COLOR,
+	ONE_MINUS_SRC_COLOR,
+	SRC_ALPHA,
+	ONE_MINUS_SRC_ALPHA,
+	DST_COLOR,
+	ONE_MINUS_DST_COLOR,
+	DST_ALPHA,
+	ONE_MINUS_DST_ALPHA,
+	CONSTANT_COLOR,
+	ONE_MINUS_CONSTANT_COLOR,
+	CONSTANT_ALPHA,
+	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.
 */
-class Blend: public Bindable<Blend>
+struct Blend
 {
-private:
-	BlendEquation eq;
+	class Loader: public DataFile::ObjectLoader<Blend>
+	{
+	public:
+		Loader(Blend &);
+
+	private:
+		void constant(float, float, float, float);
+		void equation(BlendEquation);
+		void factors(BlendFactor, BlendFactor);
+	};
+
+	bool enabled;
+	BlendEquation equation;
 	BlendFactor src_factor;
 	BlendFactor dst_factor;
+	Color constant;
+	ColorWriteMask write_mask;
 
-public:
 	Blend();
 	Blend(BlendFactor, BlendFactor);
 	Blend(BlendEquation, BlendFactor, BlendFactor);
+};
 
-	void bind() const;
 
-	static void unbind();
+inline ColorWriteMask operator|(ColorWriteMask m1, ColorWriteMask m2)
+{ return static_cast<ColorWriteMask>(static_cast<int>(m1)|static_cast<int>(m2)); }
 
-	static const Blend &alpha();
-	static const Blend &additive();
-	static const Blend &additive_alpha();
-};
+void operator>>(const LexicalConverter &, BlendEquation &);
+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
 
+#include "blend_backend.h"
+
 #endif