diff --git a/SPIRV/GlslangToSpv.cpp b/SPIRV/GlslangToSpv.cpp
index a6c777c..c79b6c2 100755
--- a/SPIRV/GlslangToSpv.cpp
+++ b/SPIRV/GlslangToSpv.cpp
@@ -156,9 +156,7 @@
     spv::Id makeSmearedConstant(spv::Id constant, int vectorSize);
     spv::Id createAtomicOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId, std::vector<spv::Id>& operands, glslang::TBasicType typeProxy);
     spv::Id createInvocationsOperation(glslang::TOperator op, spv::Id typeId, std::vector<spv::Id>& operands, glslang::TBasicType typeProxy);
-#ifdef AMD_EXTENSIONS
-    spv::Id CreateInvocationsVectorOperation(spv::Op op, spv::Id typeId, spv::Id operand);
-#endif
+    spv::Id CreateInvocationsVectorOperation(spv::Op op, spv::Id typeId, std::vector<spv::Id>& operands);
     spv::Id createMiscOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId, std::vector<spv::Id>& operands, glslang::TBasicType typeProxy);
     spv::Id createNoArgOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId);
     spv::Id getSymbolId(const glslang::TIntermSymbol* node);
@@ -4029,6 +4027,8 @@
 
     case glslang::EOpReadInvocation:
         opCode = spv::OpGroupBroadcast;
+        if (builder.isVectorType(typeId))
+            return CreateInvocationsVectorOperation(opCode, typeId, operands);
         break;
     case glslang::EOpReadFirstInvocation:
         opCode = spv::OpSubgroupFirstInvocationKHR;
@@ -4084,7 +4084,7 @@
         }
 
         if (builder.isVectorType(typeId))
-            return CreateInvocationsVectorOperation(opCode, typeId, operands[0]);
+            return CreateInvocationsVectorOperation(opCode, typeId, operands);
 
         break;
     case glslang::EOpMinInvocationsNonUniform:
@@ -4118,7 +4118,7 @@
         }
 
         if (builder.isVectorType(typeId))
-            return CreateInvocationsVectorOperation(opCode, typeId, operands[0]);
+            return CreateInvocationsVectorOperation(opCode, typeId, operands);
 
         break;
 #endif
@@ -4131,16 +4131,21 @@
     return builder.createOp(opCode, typeId, spvGroupOperands);
 }
 
-#ifdef AMD_EXTENSIONS
 // Create group invocation operations on a vector
-spv::Id TGlslangToSpvTraverser::CreateInvocationsVectorOperation(spv::Op op, spv::Id typeId, spv::Id operand)
+spv::Id TGlslangToSpvTraverser::CreateInvocationsVectorOperation(spv::Op op, spv::Id typeId, std::vector<spv::Id>& operands)
 {
+#ifdef AMD_EXTENSIONS
     assert(op == spv::OpGroupFMin || op == spv::OpGroupUMin || op == spv::OpGroupSMin ||
            op == spv::OpGroupFMax || op == spv::OpGroupUMax || op == spv::OpGroupSMax ||
-           op == spv::OpGroupFAdd || op == spv::OpGroupIAdd ||
+           op == spv::OpGroupFAdd || op == spv::OpGroupIAdd || op == spv::OpGroupBroadcast ||
            op == spv::OpGroupFMinNonUniformAMD || op == spv::OpGroupUMinNonUniformAMD || op == spv::OpGroupSMinNonUniformAMD ||
            op == spv::OpGroupFMaxNonUniformAMD || op == spv::OpGroupUMaxNonUniformAMD || op == spv::OpGroupSMaxNonUniformAMD ||
            op == spv::OpGroupFAddNonUniformAMD || op == spv::OpGroupIAddNonUniformAMD);
+#else
+    assert(op == spv::OpGroupFMin || op == spv::OpGroupUMin || op == spv::OpGroupSMin ||
+           op == spv::OpGroupFMax || op == spv::OpGroupUMax || op == spv::OpGroupSMax ||
+           op == spv::OpGroupFAdd || op == spv::OpGroupIAdd || op == spv::OpGroupBroadcast);
+#endif
 
     // Handle group invocation operations scalar by scalar.
     // The result type is the same type as the original type.
@@ -4150,28 +4155,32 @@
     //   - make a vector out the scalar results
 
     // get the types sorted out
-    int numComponents = builder.getNumComponents(operand);
-    spv::Id scalarType = builder.getScalarTypeId(builder.getTypeId(operand));
+    int numComponents = builder.getNumComponents(operands[0]);
+    spv::Id scalarType = builder.getScalarTypeId(builder.getTypeId(operands[0]));
     std::vector<spv::Id> results;
 
     // do each scalar op
     for (int comp = 0; comp < numComponents; ++comp) {
         std::vector<unsigned int> indexes;
         indexes.push_back(comp);
-        spv::Id scalar = builder.createCompositeExtract(operand, scalarType, indexes);
+        spv::Id scalar = builder.createCompositeExtract(operands[0], scalarType, indexes);
 
-        std::vector<spv::Id> operands;
-        operands.push_back(builder.makeUintConstant(spv::ScopeSubgroup));
-        operands.push_back(spv::GroupOperationReduce);
-        operands.push_back(scalar);
+        std::vector<spv::Id> spvGroupOperands;
+        spvGroupOperands.push_back(builder.makeUintConstant(spv::ScopeSubgroup));
+        if (op == spv::OpGroupBroadcast) {
+            spvGroupOperands.push_back(scalar);
+            spvGroupOperands.push_back(operands[1]);
+        } else {
+            spvGroupOperands.push_back(spv::GroupOperationReduce);
+            spvGroupOperands.push_back(scalar);
+        }
 
-        results.push_back(builder.createOp(op, scalarType, operands));
+        results.push_back(builder.createOp(op, scalarType, spvGroupOperands));
     }
 
     // put the pieces together
     return builder.createCompositeConstruct(typeId, results);
 }
-#endif
 
 spv::Id TGlslangToSpvTraverser::createMiscOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId, std::vector<spv::Id>& operands, glslang::TBasicType typeProxy)
 {