Add blending and clipping support

[libs/gl.git] / source / blend.h

diff --git a/source/blend.h b/source/blend.h
new file mode 100644 (file)
index 0000000..37fc56e
--- /dev/null
+++ b/source/blend.h
@@ -0,0 +1,49 @@
+/* $Id$
+
+This file is part of libmspgl
+Copyright © 2008  Mikko Rasa, Mikkosoft Productions
+Distributed under the LGPL
+*/
+
+#ifndef MSP_GL_BLEND_H_
+#define MSP_GL_BLEND_H_
+
+#include "gl.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
+};
+
+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
+};
+
+void blend_equation(BlendEquation eq);
+void blend_func(BlendFactor src, BlendFactor dst);
+
+} // namespace GL
+} // namespace Msp
+
+#endif