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diff --git a/src/3rdparty/glslang/hlsl/hlslScanContext.h b/src/3rdparty/glslang/hlsl/hlslScanContext.h
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+//
+// Copyright (C) 2016 Google, Inc.
+//
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+//
+//    Redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+//
+//    Redistributions in binary form must reproduce the above
+//    copyright notice, this list of conditions and the following
+//    disclaimer in the documentation and/or other materials provided
+//    with the distribution.
+//
+//    Neither the name of Google, Inc., nor the names of its
+//    contributors may be used to endorse or promote products derived
+//    from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+// COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+
+//
+// This holds context specific to the HLSL scanner, which
+// sits between the preprocessor scanner and HLSL parser.
+//
+
+#ifndef HLSLSCANCONTEXT_H_
+#define HLSLSCANCONTEXT_H_
+
+#include "../glslang/MachineIndependent/ParseHelper.h"
+#include "hlslTokens.h"
+
+namespace glslang {
+
+class TPpContext;
+class TPpToken;
+
+
+//
+// Everything needed to fully describe a token.
+//
+struct HlslToken {
+    HlslToken() : string(nullptr) { loc.init(); }
+    TSourceLoc loc;                // location of token in the source
+    EHlslTokenClass tokenClass;    // what kind of token it is
+    union {                        // what data the token holds
+        glslang::TString *string;  // for identifiers
+        int i;                     // for literals
+        unsigned int u;
+        bool b;
+        double d;
+    };
+};
+
+//
+// The state of scanning and translating raw tokens to slightly richer
+// semantics, like knowing if an identifier is an existing symbol, or
+// user-defined type.
+//
+class HlslScanContext {
+public:
+    HlslScanContext(TParseContextBase& parseContext, TPpContext& ppContext)
+        : parseContext(parseContext), ppContext(ppContext) { }
+    virtual ~HlslScanContext() { }
+
+    static void fillInKeywordMap();
+    static void deleteKeywordMap();
+
+    void tokenize(HlslToken&);
+    glslang::TBuiltInVariable mapSemantic(const char*);
+
+protected:
+    HlslScanContext(HlslScanContext&);
+    HlslScanContext& operator=(HlslScanContext&);
+
+    EHlslTokenClass tokenizeClass(HlslToken&);
+    EHlslTokenClass tokenizeIdentifier();
+    EHlslTokenClass identifierOrType();
+    EHlslTokenClass reservedWord();
+    EHlslTokenClass identifierOrReserved(bool reserved);
+    EHlslTokenClass nonreservedKeyword(int version);
+
+    TParseContextBase& parseContext;
+    TPpContext& ppContext;
+    TSourceLoc loc;
+    TPpToken* ppToken;
+    HlslToken* parserToken;
+
+    const char* tokenText;
+    EHlslTokenClass keyword;
+};
+
+} // end namespace glslang
+
+#endif // HLSLSCANCONTEXT_H_