X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fcore%2Fstenciltest.h;fp=source%2Fcore%2Fstenciltest.h;h=cdc613886e4e3adc9002d99f787340e093e50e12;hb=2b2676392aff2eb6b38c3e463cc67f4d67a4ef8b;hp=0000000000000000000000000000000000000000;hpb=669e9bfc18d2f5e28a9c715e1a69b7637a2d9c8b;p=libs%2Fgl.git

diff --git a/source/core/stenciltest.h b/source/core/stenciltest.h
new file mode 100644
index 00000000..cdc61388
--- /dev/null
+++ b/source/core/stenciltest.h
@@ -0,0 +1,58 @@
+#ifndef MSP_GL_STENCILTEST_H_
+#define MSP_GL_STENCILTEST_H_
+
+#include <msp/datafile/objectloader.h>
+#include <msp/strings/lexicalcast.h>
+#include "predicate.h"
+
+namespace Msp {
+namespace GL {
+
+enum StencilOp
+{
+	KEEP,
+	SET_ZERO,
+	REPLACE,
+	INCR,
+	DECR,
+	INVERT,
+	INCR_WRAP,
+	DECR_WRAP
+};
+
+/**
+Tests values in the stencil buffer against a reference.  If the test fails, the
+incoming fragment is discarded.  The stencil buffer may be modified according
+to results of the stencil test and the depth test.
+*/
+struct StencilTest
+{
+	class Loader: public DataFile::ObjectLoader<StencilTest>
+	{
+	public:
+		Loader(StencilTest &);
+
+	private:
+		void compare(Predicate);
+		void actions(StencilOp, StencilOp, StencilOp);
+	};
+
+	bool enabled;
+	Predicate compare;
+	StencilOp stencil_fail_op;
+	StencilOp depth_fail_op;
+	StencilOp depth_pass_op;
+	unsigned reference;
+
+	StencilTest();
+};
+
+GLenum get_gl_stencil_op(StencilOp);
+
+void operator>>(const LexicalConverter &, StencilOp &);
+void operator<<(LexicalConverter &, StencilOp);
+
+} // namespace GL
+} // namespace Msp
+
+#endif