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, 50 insertions, 0 deletions

diff --git a/src/3rdparty/angle/src/compiler/DetectDiscontinuity.h b/src/3rdparty/angle/src/compiler/DetectDiscontinuity.h
new file mode 100644
index 0000000000..8bda4c3dea
--- /dev/null
+++ b/src/3rdparty/angle/src/compiler/DetectDiscontinuity.h
@@ -0,0 +1,50 @@
+//
+// Copyright (c) 2012 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.
+//
+// Contains analysis utilities for dealing with HLSL's lack of support for
+// the use of intrinsic functions which (implicitly or explicitly) compute
+// gradients of functions with discontinuities. 
+//
+
+#ifndef COMPILER_DETECTDISCONTINUITY_H_
+#define COMPILER_DETECTDISCONTINUITY_H_
+
+#include "compiler/intermediate.h"
+
+namespace sh
+{
+// Checks whether a loop can run for a variable number of iterations
+class DetectLoopDiscontinuity : public TIntermTraverser
+{
+  public:
+    bool traverse(TIntermNode *node);
+
+  protected:
+    bool visitBranch(Visit visit, TIntermBranch *node);
+    bool visitAggregate(Visit visit, TIntermAggregate *node);
+
+    bool mLoopDiscontinuity;
+};
+
+bool containsLoopDiscontinuity(TIntermNode *node);
+
+// Checks for intrinsic functions which compute gradients
+class DetectGradientOperation : public TIntermTraverser
+{
+  public:
+    bool traverse(TIntermNode *node);
+
+  protected:
+    bool visitUnary(Visit visit, TIntermUnary *node);
+    bool visitAggregate(Visit visit, TIntermAggregate *node);
+
+    bool mGradientOperation;
+};
+
+bool containsGradientOperation(TIntermNode *node);
+
+}
+
+#endif   // COMPILER_DETECTDISCONTINUITY_H_