diff --git a/StandAlone/StandAlone.cpp b/StandAlone/StandAlone.cpp
index e96680d5..8480ca67 100644
--- a/StandAlone/StandAlone.cpp
+++ b/StandAlone/StandAlone.cpp
@@ -156,6 +156,7 @@ const char* entryPointName = nullptr;
 const char* sourceEntryPointName = nullptr;
 const char* shaderStageName = nullptr;
 const char* variableName = nullptr;
+bool HlslEnable16BitTypes = false;
 std::vector<std::string> IncludeDirectoryList;
 int ClientInputSemanticsVersion = 100;                  // maps to, say, #define VULKAN 100
 glslang::EshTargetClientVersion VulkanClientVersion =
@@ -453,6 +454,8 @@ void ProcessArguments(std::vector<std::unique_ptr<glslang::TWorkItem>>& workItem
                                lowerword == "hlsl-iomapper" ||
                                lowerword == "hlsl-iomapping") {
                         Options |= EOptionHlslIoMapping;
+                    } else if (lowerword == "hlsl-enable-16bit-types") {
+                        HlslEnable16BitTypes = true;
                     } else if (lowerword == "invert-y" ||  // synonyms
                                lowerword == "iy") {
                         Options |= EOptionInvertY;
@@ -520,7 +523,7 @@ void ProcessArguments(std::vector<std::unique_ptr<glslang::TWorkItem>>& workItem
                                 setOpenGlSpv();
                                 OpenGLClientVersion = glslang::EShTargetOpenGL_450;
                             } else
-                                Error("--target-env expected vulkan1.0 or opengl");
+                                Error("--target-env expected vulkan1.0, opengl, or hlsl-16bit-types");
                         }
                         bumpArg();
                     } else if (lowerword == "variable-name" || // synonyms
@@ -708,6 +711,8 @@ void SetMessageOptions(EShMessages& messages)
         messages = (EShMessages)(messages | EShMsgHlslOffsets);
     if (Options & EOptionDebug)
         messages = (EShMessages)(messages | EShMsgDebugInfo);
+    if (HlslEnable16BitTypes)
+        messages = (EShMessages)(messages | EShMsgHlslEnable16BitTypes);
 }
 
 //
@@ -1341,6 +1346,7 @@ void usage()
            "  --hlsl-offsets                       Allow block offsets to follow HLSL rules\n"
            "                                       Works independently of source language\n"
            "  --hlsl-iomap                         Perform IO mapping in HLSL register space\n"
+           "  --hlsl-enable-16bit-types            Allow use of 16-bit types in SPIR-V for HLSL\n"
            "  --invert-y | --iy                    invert position.Y output in vertex shader\n"
            "  --keep-uncalled                      don't eliminate uncalled functions\n"
            "  --ku                                 synonym for --keep-uncalled\n"
diff --git a/glslang/Include/revision.h b/glslang/Include/revision.h
index 1d5cebf4..4b565475 100644
--- a/glslang/Include/revision.h
+++ b/glslang/Include/revision.h
@@ -1,3 +1,3 @@
 // This header is generated by the make-revision script.
 
-#define GLSLANG_PATCH_LEVEL 2601
+#define GLSLANG_PATCH_LEVEL 2604
diff --git a/glslang/MachineIndependent/parseVersions.h b/glslang/MachineIndependent/parseVersions.h
index df65f6c1..b2aaa399 100755
--- a/glslang/MachineIndependent/parseVersions.h
+++ b/glslang/MachineIndependent/parseVersions.h
@@ -119,6 +119,7 @@ public:
     bool relaxedErrors()    const { return (messages & EShMsgRelaxedErrors) != 0; }
     bool suppressWarnings() const { return (messages & EShMsgSuppressWarnings) != 0; }
     bool isReadingHLSL()    const { return (messages & EShMsgReadHlsl) == EShMsgReadHlsl; }
+    bool hlslEnable16BitTypes() const { return (messages & EShMsgHlslEnable16BitTypes) != 0; }
 
     TInfoSink& infoSink;
 
diff --git a/glslang/Public/ShaderLang.h b/glslang/Public/ShaderLang.h
index 6f0bc541..67cb3baa 100644
--- a/glslang/Public/ShaderLang.h
+++ b/glslang/Public/ShaderLang.h
@@ -70,7 +70,7 @@
 // This should always increase, as some paths to do not consume
 // a more major number.
 // It should increment by one when new functionality is added.
-#define GLSLANG_MINOR_VERSION 2
+#define GLSLANG_MINOR_VERSION 3
 
 //
 // Call before doing any other compiler/linker operations.
@@ -211,6 +211,7 @@ enum EShMessages {
     EShMsgKeepUncalled     = (1 << 8),  // for testing, don't eliminate uncalled functions
     EShMsgHlslOffsets      = (1 << 9),  // allow block offsets to follow HLSL rules instead of GLSL rules
     EShMsgDebugInfo        = (1 << 10), // save debug information
+    EShMsgHlslEnable16BitTypes  = (1 << 11), // enable use of 16-bit types in SPIR-V for HLSL
 };
 
 //
diff --git a/hlsl/hlslGrammar.cpp b/hlsl/hlslGrammar.cpp
index 8bcee50e..72d636da 100755
--- a/hlsl/hlslGrammar.cpp
+++ b/hlsl/hlslGrammar.cpp
@@ -1379,12 +1379,23 @@ bool HlslGrammar::acceptType(TType& type, TIntermNode*& nodeList)
 {
     // Basic types for min* types, broken out here in case of future
     // changes, e.g, to use native halfs.
+#ifdef AMD_EXTENSIONS
+    bool enable16BitTypes = parseContext.hlslEnable16BitTypes();
+
+    const TBasicType min16float_bt = enable16BitTypes ? EbtFloat16 : EbtFloat;
+    const TBasicType min10float_bt = enable16BitTypes ? EbtFloat16 : EbtFloat;
+    const TBasicType half_bt       = enable16BitTypes ? EbtFloat16 : EbtFloat;
+    const TBasicType min16int_bt   = enable16BitTypes ? EbtInt16   : EbtInt;
+    const TBasicType min12int_bt   = enable16BitTypes ? EbtInt16   : EbtInt;
+    const TBasicType min16uint_bt  = enable16BitTypes ? EbtUint16  : EbtUint;
+#else
     static const TBasicType min16float_bt = EbtFloat;
     static const TBasicType min10float_bt = EbtFloat;
     static const TBasicType half_bt       = EbtFloat;
     static const TBasicType min16int_bt   = EbtInt;
     static const TBasicType min12int_bt   = EbtInt;
     static const TBasicType min16uint_bt  = EbtUint;
+#endif
 
     // Some types might have turned into identifiers. Take the hit for checking
     // when this has happened.