diff --git a/deps/glslang/glslang/glslang/Include/BaseTypes.h b/deps/glslang/glslang/glslang/Include/BaseTypes.h
index 46fe159b49..c935c5b677 100644
--- a/deps/glslang/glslang/glslang/Include/BaseTypes.h
+++ b/deps/glslang/glslang/glslang/Include/BaseTypes.h
@@ -390,19 +390,6 @@ __inline const char* GetPrecisionQualifierString(TPrecisionQualifier p)
     }
 }
 
-__inline bool isTypeSignedInt(TBasicType type)
-{
-    switch (type) {
-    case EbtInt8:
-    case EbtInt16:
-    case EbtInt:
-    case EbtInt64:
-        return true;
-    default:
-        return false;
-    }
-}
-
 __inline bool isTypeUnsignedInt(TBasicType type)
 {
     switch (type) {
@@ -416,11 +403,6 @@ __inline bool isTypeUnsignedInt(TBasicType type)
     }
 }
 
-__inline bool isTypeInt(TBasicType type)
-{
-    return isTypeSignedInt(type) || isTypeUnsignedInt(type);
-}
-
 __inline bool isTypeFloat(TBasicType type)
 {
     switch (type) {
@@ -433,32 +415,6 @@ __inline bool isTypeFloat(TBasicType type)
     }
 }
 
-__inline int getTypeRank(TBasicType type) {
-    int res = -1;
-    switch(type) {
-    case EbtInt8:
-    case EbtUint8:
-        res = 0;
-        break;
-    case EbtInt16:
-    case EbtUint16:
-        res = 1;
-        break;
-    case EbtInt:
-    case EbtUint:
-        res = 2;
-        break;
-    case EbtInt64:
-    case EbtUint64:
-        res = 3;
-        break;
-    default:
-        assert(false);
-        break;
-    }
-    return res;
-}
-
 } // end namespace glslang
 
 #endif // _BASICTYPES_INCLUDED_
diff --git a/deps/glslang/glslang/glslang/Include/PoolAlloc.h b/deps/glslang/glslang/glslang/Include/PoolAlloc.h
index b8eccb8832..9f25bbcfa7 100644
--- a/deps/glslang/glslang/glslang/Include/PoolAlloc.h
+++ b/deps/glslang/glslang/glslang/Include/PoolAlloc.h
@@ -37,10 +37,6 @@
 #ifndef _POOLALLOC_INCLUDED_
 #define _POOLALLOC_INCLUDED_
 
-#ifdef _DEBUG
-#  define GUARD_BLOCKS  // define to enable guard block sanity checking
-#endif
-
 //
 // This header defines an allocator that can be used to efficiently
 // allocate a large number of small requests for heap memory, with the
@@ -81,37 +77,23 @@ public:
         // This would be cleaner with if (guardBlockSize)..., but that
         // makes the compiler print warnings about 0 length memsets,
         // even with the if() protecting them.
-#       ifdef GUARD_BLOCKS
-            memset(preGuard(),  guardBlockBeginVal, guardBlockSize);
-            memset(data(),      userDataFill,       size);
-            memset(postGuard(), guardBlockEndVal,   guardBlockSize);
-#       endif
     }
 
-    void check() const {
-        checkGuardBlock(preGuard(),  guardBlockBeginVal, "before");
-        checkGuardBlock(postGuard(), guardBlockEndVal,   "after");
-    }
-
-    void checkAllocList() const;
-
     // Return total size needed to accommodate user buffer of 'size',
     // plus our tracking data.
     inline static size_t allocationSize(size_t size) {
-        return size + 2 * guardBlockSize + headerSize();
+        return size + 2 * 0 + headerSize();
     }
 
     // Offset from surrounding buffer to get to user data buffer.
     inline static unsigned char* offsetAllocation(unsigned char* m) {
-        return m + guardBlockSize + headerSize();
+        return m + headerSize();
     }
 
 private:
-    void checkGuardBlock(unsigned char* blockMem, unsigned char val, const char* locText) const;
-
     // Find offsets to pre and post guard blocks, and user data buffer
     unsigned char* preGuard()  const { return mem + headerSize(); }
-    unsigned char* data()      const { return preGuard() + guardBlockSize; }
+    unsigned char* data()      const { return preGuard(); }
     unsigned char* postGuard() const { return data() + size; }
 
     size_t size;                  // size of the user data area
@@ -122,12 +104,7 @@ private:
     const static unsigned char guardBlockEndVal;
     const static unsigned char userDataFill;
 
-    const static size_t guardBlockSize;
-#   ifdef GUARD_BLOCKS
-    inline static size_t headerSize() { return sizeof(TAllocation); }
-#   else
     inline static size_t headerSize() { return 0; }
-#   endif
 };
 
 //
@@ -165,11 +142,6 @@ public:
     //
     void pop();
 
-    //
-    // Call popAll() to free all memory allocated.
-    //
-    void popAll();
-
     //
     // Call allocate() to actually acquire memory.  Returns 0 if no memory
     // available, otherwise a properly aligned pointer to 'numBytes' of memory.
@@ -188,21 +160,11 @@ protected:
 
     struct tHeader {
         tHeader(tHeader* nextPage, size_t pageCount) :
-#ifdef GUARD_BLOCKS
-        lastAllocation(0),
-#endif
         nextPage(nextPage), pageCount(pageCount) { }
 
         ~tHeader() {
-#ifdef GUARD_BLOCKS
-            if (lastAllocation)
-                lastAllocation->checkAllocList();
-#endif
         }
 
-#ifdef GUARD_BLOCKS
-        TAllocation* lastAllocation;
-#endif
         tHeader* nextPage;
         size_t pageCount;
     };
@@ -214,15 +176,7 @@ protected:
     typedef std::vector<tAllocState> tAllocStack;
 
     // Track allocations if and only if we're using guard blocks
-#ifndef GUARD_BLOCKS
     void* initializeAllocation(tHeader*, unsigned char* memory, size_t) {
-#else
-    void* initializeAllocation(tHeader* block, unsigned char* memory, size_t numBytes) {
-        new(memory) TAllocation(numBytes, memory, block->lastAllocation);
-        block->lastAllocation = reinterpret_cast<TAllocation*>(memory);
-#endif
-
-        // This is optimized entirely away if GUARD_BLOCKS is not defined.
         return TAllocation::offsetAllocation(memory);
     }
 
diff --git a/deps/glslang/glslang/glslang/Include/ShHandle.h b/deps/glslang/glslang/glslang/Include/ShHandle.h
index e19ceeed91..10ca6d0a7a 100644
--- a/deps/glslang/glslang/glslang/Include/ShHandle.h
+++ b/deps/glslang/glslang/glslang/Include/ShHandle.h
@@ -46,109 +46,25 @@
 #include "../MachineIndependent/Versions.h"
 #include "InfoSink.h"
 
-class TCompiler;
-class TLinker;
-class TUniformMap;
-
-//
-// The base class used to back handles returned to the driver.
-//
-class TShHandleBase {
-public:
-    TShHandleBase() { pool = new glslang::TPoolAllocator; }
-    virtual ~TShHandleBase() { delete pool; }
-    virtual TCompiler* getAsCompiler() { return 0; }
-    virtual TLinker* getAsLinker() { return 0; }
-    virtual TUniformMap* getAsUniformMap() { return 0; }
-    virtual glslang::TPoolAllocator* getPool() const { return pool; }
-private:
-    glslang::TPoolAllocator* pool;
-};
-
-//
-// The base class for the machine dependent linker to derive from
-// for managing where uniforms live.
-//
-class TUniformMap : public TShHandleBase {
-public:
-    TUniformMap() { }
-    virtual ~TUniformMap() { }
-    virtual TUniformMap* getAsUniformMap() { return this; }
-    virtual int getLocation(const char* name) = 0;
-    virtual TInfoSink& getInfoSink() { return infoSink; }
-    TInfoSink infoSink;
-};
-
 class TIntermNode;
 
 //
 // The base class for the machine dependent compiler to derive from
 // for managing object code from the compile.
 //
-class TCompiler : public TShHandleBase {
+class TCompiler {
 public:
-    TCompiler(EShLanguage l, TInfoSink& sink) : infoSink(sink) , language(l), haveValidObjectCode(false) { }
+    TCompiler(EShLanguage l, TInfoSink& sink) : infoSink(sink) , language(l) { }
     virtual ~TCompiler() { }
     EShLanguage getLanguage() { return language; }
-    virtual TInfoSink& getInfoSink() { return infoSink; }
 
     virtual bool compile(TIntermNode* root, int version = 0, EProfile profile = ENoProfile) = 0;
 
-    virtual TCompiler* getAsCompiler() { return this; }
-    virtual bool linkable() { return haveValidObjectCode; }
-
     TInfoSink& infoSink;
 protected:
     TCompiler& operator=(TCompiler&);
 
     EShLanguage language;
-    bool haveValidObjectCode;
-};
-
-//
-// Link operations are based on a list of compile results...
-//
-typedef glslang::TVector<TCompiler*> TCompilerList;
-typedef glslang::TVector<TShHandleBase*> THandleList;
-
-//
-// The base class for the machine dependent linker to derive from
-// to manage the resulting executable.
-//
-
-class TLinker : public TShHandleBase {
-public:
-    TLinker(EShExecutable e, TInfoSink& iSink) :
-        infoSink(iSink),
-        executable(e),
-        haveReturnableObjectCode(false),
-        appAttributeBindings(0),
-        fixedAttributeBindings(0),
-        excludedAttributes(0),
-        excludedCount(0),
-        uniformBindings(0) { }
-    virtual TLinker* getAsLinker() { return this; }
-    virtual ~TLinker() { }
-    virtual bool link(TCompilerList&, TUniformMap*) = 0;
-    virtual bool link(THandleList&) { return false; }
-    virtual void setAppAttributeBindings(const ShBindingTable* t)   { appAttributeBindings = t; }
-    virtual void setFixedAttributeBindings(const ShBindingTable* t) { fixedAttributeBindings = t; }
-    virtual void getAttributeBindings(ShBindingTable const **t) const = 0;
-    virtual void setExcludedAttributes(const int* attributes, int count) { excludedAttributes = attributes; excludedCount = count; }
-    virtual ShBindingTable* getUniformBindings() const  { return uniformBindings; }
-    virtual const void* getObjectCode() const { return 0; } // a real compiler would be returning object code here
-    virtual TInfoSink& getInfoSink() { return infoSink; }
-    TInfoSink& infoSink;
-protected:
-    TLinker& operator=(TLinker&);
-    EShExecutable executable;
-    bool haveReturnableObjectCode;  // true when objectCode is acceptable to send to driver
-
-    const ShBindingTable* appAttributeBindings;
-    const ShBindingTable* fixedAttributeBindings;
-    const int* excludedAttributes;
-    int excludedCount;
-    ShBindingTable* uniformBindings;                // created by the linker
 };
 
 #endif // _SHHANDLE_INCLUDED_
diff --git a/deps/glslang/glslang/glslang/Include/revision.template b/deps/glslang/glslang/glslang/Include/revision.template
deleted file mode 100644
index 6c13630b27..0000000000
--- a/deps/glslang/glslang/glslang/Include/revision.template
+++ /dev/null
@@ -1,13 +0,0 @@
-// The file revision.h should be updated to the latest version, somehow, on
-// check-in, if glslang has changed.
-//
-// revision.template is the source for revision.h when using SubWCRev as the
-// method of updating revision.h.  You don't have to do it this way, the
-// requirement is only that revision.h gets updated.
-//
-// revision.h is under source control so that not all consumers of glslang
-// source have to figure out how to create revision.h just to get a build
-// going.  However, if it is not updated, it can be a version behind.
-
-#define GLSLANG_REVISION "$WCREV$"
-#define GLSLANG_DATE     "$WCDATE$"
diff --git a/deps/glslang/glslang/glslang/MachineIndependent/Constant.cpp b/deps/glslang/glslang/glslang/MachineIndependent/Constant.cpp
index 142492dc33..b9583e2bc9 100644
--- a/deps/glslang/glslang/glslang/MachineIndependent/Constant.cpp
+++ b/deps/glslang/glslang/glslang/MachineIndependent/Constant.cpp
@@ -52,7 +52,7 @@ typedef union {
 
 // Some helper functions
 
-bool isNan(double x)
+static bool isNan(double x)
 {
     DoubleIntUnion u;
     // tough to find a platform independent library function, do it directly
@@ -63,7 +63,7 @@ bool isNan(double x)
            ((bitPatternH & 0xFFFFF) != 0 || bitPatternL != 0);
 }
 
-bool isInf(double x)
+static bool isInf(double x)
 {
     DoubleIntUnion u;
     // tough to find a platform independent library function, do it directly
@@ -74,7 +74,9 @@ bool isInf(double x)
            (bitPatternH & 0xFFFFF) == 0 && bitPatternL == 0;
 }
 
-const double pi = 3.1415926535897932384626433832795;
+#ifndef M_PI
+#define M_PI 3.1415926535897932384626433832795
+#endif
 
 } // end anonymous namespace
 
@@ -545,10 +547,10 @@ TIntermTyped* TIntermConstantUnion::fold(TOperator op, const TType& returnType)
             newConstArray[i] = ~unionArray[i];
             break;
         case EOpRadians:
-            newConstArray[i].setDConst(unionArray[i].getDConst() * pi / 180.0);
+            newConstArray[i].setDConst(unionArray[i].getDConst() * M_PI / 180.0);
             break;
         case EOpDegrees:
-            newConstArray[i].setDConst(unionArray[i].getDConst() * 180.0 / pi);
+            newConstArray[i].setDConst(unionArray[i].getDConst() * 180.0 / M_PI);
             break;
         case EOpSin:
             newConstArray[i].setDConst(sin(unionArray[i].getDConst()));
diff --git a/deps/glslang/glslang/glslang/MachineIndependent/Intermediate.cpp b/deps/glslang/glslang/glslang/MachineIndependent/Intermediate.cpp
index de722179c7..cde08201b6 100644
--- a/deps/glslang/glslang/glslang/MachineIndependent/Intermediate.cpp
+++ b/deps/glslang/glslang/glslang/MachineIndependent/Intermediate.cpp
@@ -51,6 +51,52 @@
 
 namespace glslang {
 
+static __inline bool isTypeSignedInt(TBasicType type)
+{
+    switch (type) {
+    case EbtInt8:
+    case EbtInt16:
+    case EbtInt:
+    case EbtInt64:
+        return true;
+    default:
+        return false;
+    }
+}
+
+static __inline bool isTypeInt(TBasicType type)
+{
+    return isTypeSignedInt(type) || isTypeUnsignedInt(type);
+}
+
+static __inline int getTypeRank(TBasicType type)
+{
+    int res = -1;
+    switch(type) {
+    case EbtInt8:
+    case EbtUint8:
+        res = 0;
+        break;
+    case EbtInt16:
+    case EbtUint16:
+        res = 1;
+        break;
+    case EbtInt:
+    case EbtUint:
+        res = 2;
+        break;
+    case EbtInt64:
+    case EbtUint64:
+        res = 3;
+        break;
+    default:
+        assert(false);
+        break;
+    }
+    return res;
+}
+
+
 ////////////////////////////////////////////////////////////////////////////
 //
 // First set of functions are to help build the intermediate representation.
@@ -1636,7 +1682,6 @@ static bool canSignedIntTypeRepresentAllUnsignedValues(TBasicType sintType, TBas
     }
 }
 
-
 static TBasicType getCorrespondingUnsignedType(TBasicType type) {
     switch(type) {
     case EbtInt8:
diff --git a/deps/glslang/glslang/glslang/MachineIndependent/ParseHelper.cpp b/deps/glslang/glslang/glslang/MachineIndependent/ParseHelper.cpp
index 828e49651f..fc39115126 100755
--- a/deps/glslang/glslang/glslang/MachineIndependent/ParseHelper.cpp
+++ b/deps/glslang/glslang/glslang/MachineIndependent/ParseHelper.cpp
@@ -2676,6 +2676,24 @@ void TParseContext::globalQualifierFixCheck(const TSourceLoc& loc, TQualifier& q
     invariantCheck(loc, qualifier);
 }
 
+static __inline bool isTypeSignedInt(TBasicType type)
+{
+    switch (type) {
+    case EbtInt8:
+    case EbtInt16:
+    case EbtInt:
+    case EbtInt64:
+        return true;
+    default:
+        return false;
+    }
+}
+
+static __inline bool isTypeInt(TBasicType type)
+{
+    return isTypeSignedInt(type) || isTypeUnsignedInt(type);
+}
+
 //
 // Check a full qualifier and type (no variable yet) at global level.
 //
diff --git a/deps/glslang/glslang/glslang/MachineIndependent/PoolAlloc.cpp b/deps/glslang/glslang/glslang/MachineIndependent/PoolAlloc.cpp
index c27131d56e..03a5d605fd 100644
--- a/deps/glslang/glslang/glslang/MachineIndependent/PoolAlloc.cpp
+++ b/deps/glslang/glslang/glslang/MachineIndependent/PoolAlloc.cpp
@@ -150,38 +150,6 @@ const unsigned char TAllocation::guardBlockBeginVal = 0xfb;
 const unsigned char TAllocation::guardBlockEndVal   = 0xfe;
 const unsigned char TAllocation::userDataFill       = 0xcd;
 
-#   ifdef GUARD_BLOCKS
-    const size_t TAllocation::guardBlockSize = 16;
-#   else
-    const size_t TAllocation::guardBlockSize = 0;
-#   endif
-
-//
-// Check a single guard block for damage
-//
-#ifdef GUARD_BLOCKS
-void TAllocation::checkGuardBlock(unsigned char* blockMem, unsigned char val, const char* locText) const
-#else
-void TAllocation::checkGuardBlock(unsigned char*, unsigned char, const char*) const
-#endif
-{
-#ifdef GUARD_BLOCKS
-    for (size_t x = 0; x < guardBlockSize; x++) {
-        if (blockMem[x] != val) {
-            const int maxSize = 80;
-            char assertMsg[maxSize];
-
-            // We don't print the assert message.  It's here just to be helpful.
-            snprintf(assertMsg, maxSize, "PoolAlloc: Damage %s %zu byte allocation at 0x%p\n",
-                      locText, size, data());
-            assert(0 && "PoolAlloc: Damage in guard block");
-        }
-    }
-#else
-    assert(guardBlockSize == 0);
-#endif
-}
-
 void TPoolAllocator::push()
 {
     tAllocState state = { currentPageOffset, inUseList };
@@ -229,16 +197,6 @@ void TPoolAllocator::pop()
     stack.pop_back();
 }
 
-//
-// Do a mass-deallocation of all the individual allocations
-// that have occurred.
-//
-void TPoolAllocator::popAll()
-{
-    while (stack.size() > 0)
-        pop();
-}
-
 void* TPoolAllocator::allocate(size_t numBytes)
 {
     // If we are using guard blocks, all allocations are bracketed by
@@ -312,13 +270,4 @@ void* TPoolAllocator::allocate(size_t numBytes)
     return initializeAllocation(inUseList, ret, numBytes);
 }
 
-//
-// Check all allocations in a list for damage by calling check on each.
-//
-void TAllocation::checkAllocList() const
-{
-    for (const TAllocation* alloc = this; alloc != 0; alloc = alloc->prevAlloc)
-        alloc->check();
-}
-
 } // end namespace glslang
diff --git a/deps/glslang/glslang/glslang/MachineIndependent/intermOut.cpp b/deps/glslang/glslang/glslang/MachineIndependent/intermOut.cpp
index fc75964fa1..fb6e4f7011 100755
--- a/deps/glslang/glslang/glslang/MachineIndependent/intermOut.cpp
+++ b/deps/glslang/glslang/glslang/MachineIndependent/intermOut.cpp
@@ -46,7 +46,7 @@
 
 namespace {
 
-bool IsInfinity(double x) {
+static bool IsInfinity(double x) {
 #ifdef _MSC_VER
     switch (_fpclass(x)) {
     case _FPCLASS_NINF:
@@ -60,15 +60,16 @@ bool IsInfinity(double x) {
 #endif
 }
 
-bool IsNan(double x) {
+static bool IsNan(double x) {
 #ifdef _MSC_VER
     switch (_fpclass(x)) {
     case _FPCLASS_SNAN:
     case _FPCLASS_QNAN:
         return true;
     default:
-        return false;
+	break;
     }
+  return false;
 #else
   return std::isnan(x);
 #endif