Add ANGLE as a 3rdparty library to Qt.

ANGLE is a component that implements the OpenGL ES 2.0 API on
top of DirectX 9. See the following for more info:

http://code.google.com/p/angleproject/

ANGLE is now the default configuration on Windows. If you
want to use desktop OpenGL, you should build Qt with the
following configure options:

    -opengl desktop

To configure Qt to use another OpenGL ES 2 implementation,
you should use:

    -opengl es2 -no-angle

Task-number: QTBUG-24207

Change-Id: Iefcbeaa37ed920f431729749ab8333b248fe5134
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>

1 files changed, 77 insertions, 0 deletions

diff --git a/src/3rdparty/angle/src/compiler/RemoveTree.cpp b/src/3rdparty/angle/src/compiler/RemoveTree.cpp
new file mode 100644
index 0000000000..a4b8c1e63e
--- /dev/null
+++ b/src/3rdparty/angle/src/compiler/RemoveTree.cpp
@@ -0,0 +1,77 @@
+//
+// Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+#include "compiler/intermediate.h"
+#include "compiler/RemoveTree.h"
+
+//
+// Code to recursively delete the intermediate tree.
+//
+
+class RemoveTree : public TIntermTraverser
+{
+public:
+	RemoveTree() : TIntermTraverser(false, false, true)
+	{
+	}
+
+protected:
+	void visitSymbol(TIntermSymbol*);
+	void visitConstantUnion(TIntermConstantUnion*);
+	bool visitBinary(Visit visit, TIntermBinary*);
+	bool visitUnary(Visit visit, TIntermUnary*);
+	bool visitSelection(Visit visit, TIntermSelection*);
+	bool visitAggregate(Visit visit, TIntermAggregate*);
+};
+
+void RemoveTree::visitSymbol(TIntermSymbol* node)
+{
+	delete node;
+}
+
+bool RemoveTree::visitBinary(Visit visit, TIntermBinary* node)
+{
+	delete node;
+
+	return true;
+}
+
+bool RemoveTree::visitUnary(Visit visit, TIntermUnary* node)
+{
+    delete node;
+
+	return true;
+}
+
+bool RemoveTree::visitAggregate(Visit visit, TIntermAggregate* node)
+{
+	delete node;
+
+	return true;
+}
+
+bool RemoveTree::visitSelection(Visit visit, TIntermSelection* node)
+{
+	delete node;
+
+	return true;
+}
+
+void RemoveTree::visitConstantUnion(TIntermConstantUnion* node)
+{
+	delete node;
+}
+
+//
+// Entry point.
+//
+void RemoveAllTreeNodes(TIntermNode* root)
+{
+    RemoveTree it;
+
+    root->traverse(&it);
+}
+