1 files changed, 63 insertions, 0 deletions
diff --git a/indra/llui/lllocalcliprect.h b/indra/llui/lllocalcliprect.h
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+++ b/indra/llui/lllocalcliprect.h
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+/** 
+* @file lllocalcliprect.h
+*
+* $LicenseInfo:firstyear=2009&license=viewerlgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 2010, Linden Research, Inc.
+* 
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+* 
+* This library is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+* Lesser General Public License for more details.
+* 
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+* 
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+* $/LicenseInfo$
+*/
+#ifndef LLLOCALCLIPRECT_H
+#define LLLOCALCLIPRECT_H
+
+#include "llgl.h"
+#include "llrect.h"		// can't forward declare, it's templated
+#include <stack>
+
+// Clip rendering to a specific rectangle using GL scissor
+// Just create one of these on the stack:
+// {
+//     LLLocalClipRect(rect);
+//     draw();
+// }
+class LLScreenClipRect
+{
+public:
+	LLScreenClipRect(const LLRect& rect, BOOL enabled = TRUE);
+	virtual ~LLScreenClipRect();
+
+private:
+	static void pushClipRect(const LLRect& rect);
+	static void popClipRect();
+	static void updateScissorRegion();
+
+private:
+	LLGLState		mScissorState;
+	BOOL			mEnabled;
+
+	static std::stack<LLRect> sClipRectStack;
+};
+
+class LLLocalClipRect : public LLScreenClipRect
+{
+public:
+	LLLocalClipRect(const LLRect& rect, BOOL enabled = TRUE);
+	~LLLocalClipRect();
+};
+
+#endif