Web: Remove unused stage functionality, SPIR-V logger, and hex_utils

Saves another 20K.

SPIRV/GlslangToSpv.cpp

@@ -248,6 +248,10 @@ protected:
 // Translate glslang profile to SPIR-V source language.
 spv::SourceLanguage TranslateSourceLanguage(glslang::EShSource source, EProfile profile)
 {
+#ifdef GLSLANG_WEB
+    return spv::SourceLanguageESSL;
+#endif
+
     switch (source) {
     case glslang::EShSourceGlsl:
         switch (profile) {
@@ -601,6 +605,7 @@ spv::BuiltIn TGlslangToSpvTraverser::TranslateBuiltInDecoration(glslang::TBuiltI
 {
     switch (builtIn) {
     case glslang::EbvPointSize:
+#ifndef GLSLANG_WEB
         // Defer adding the capability until the built-in is actually used.
         if (! memberDeclaration) {
             switch (glslangIntermediate->getStage()) {
@@ -615,6 +620,7 @@ spv::BuiltIn TGlslangToSpvTraverser::TranslateBuiltInDecoration(glslang::TBuiltI
                 break;
             }
         }
+#endif
         return spv::BuiltInPointSize;
 
     case glslang::EbvPosition:             return spv::BuiltInPosition;
@@ -1664,6 +1670,7 @@ void TGlslangToSpvTraverser::visitSymbol(glslang::TIntermSymbol* symbol)
             builder.setAccessChainLValue(id);
     }
 
+#ifndef GLSLANG_WEB
     // Process linkage-only nodes for any special additional interface work.
     if (linkageOnly) {
         if (glslangIntermediate->getHlslFunctionality1()) {
@@ -1695,6 +1702,7 @@ void TGlslangToSpvTraverser::visitSymbol(glslang::TIntermSymbol* symbol)
             }
         }
     }
+#endif
 }
 
 bool TGlslangToSpvTraverser::visitBinary(glslang::TVisit /* visit */, glslang::TIntermBinary* node)
@@ -2151,12 +2159,14 @@ bool TGlslangToSpvTraverser::visitUnary(glslang::TVisit /* visit */, glslang::TI
 
         return false;
 
+#ifndef GLSLANG_WEB
     case glslang::EOpEmitStreamVertex:
         builder.createNoResultOp(spv::OpEmitStreamVertex, operand);
         return false;
     case glslang::EOpEndStreamPrimitive:
         builder.createNoResultOp(spv::OpEndStreamPrimitive, operand);
         return false;
+#endif
 
     default:
         logger->missingFunctionality("unknown glslang unary");
@@ -4123,8 +4133,12 @@ void TGlslangToSpvTraverser::makeFunctions(const glslang::TIntermSequence& glslF
         std::vector<std::vector<spv::Decoration>> paramDecorations; // list of decorations per parameter
         glslang::TIntermSequence& parameters = glslFunction->getSequence()[0]->getAsAggregate()->getSequence();
 
+#ifdef ENABLE_HLSL
         bool implicitThis = (int)parameters.size() > 0 && parameters[0]->getAsSymbolNode()->getName() ==
                                                           glslangIntermediate->implicitThisName;
+#else
+        bool implicitThis = false;
+#endif
 
         paramDecorations.resize(parameters.size());
         for (int p = 0; p < (int)parameters.size(); ++p) {
@@ -7396,11 +7410,11 @@ spv::Id TGlslangToSpvTraverser::createMiscOperation(glslang::TOperator op, spv::
 // Intrinsics with no arguments (or no return value, and no precision).
 spv::Id TGlslangToSpvTraverser::createNoArgOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId)
 {
+#ifndef GLSLANG_WEB
     // GLSL memory barriers use queuefamily scope in new model, device scope in old model
     spv::Scope memoryBarrierScope = glslangIntermediate->usingVulkanMemoryModel() ? spv::ScopeQueueFamilyKHR : spv::ScopeDevice;
 
     switch (op) {
-#ifndef GLSLANG_WEB
     case glslang::EOpEmitVertex:
         builder.createNoResultOp(spv::OpEmitVertex);
         return 0;
@@ -7538,11 +7552,14 @@ spv::Id TGlslangToSpvTraverser::createNoArgOperation(glslang::TOperator op, spv:
         builder.addCapability(spv::CapabilityShaderClockKHR);
         return builder.createOp(spv::OpReadClockKHR, typeId, args);
     }
-#endif
     default:
-        logger->missingFunctionality("unknown operation with no arguments");
-        return 0;
+        break;
     }
+#endif
+
+    logger->missingFunctionality("unknown operation with no arguments");
+
+    return 0;
 }
 
 spv::Id TGlslangToSpvTraverser::getSymbolId(const glslang::TIntermSymbol* symbol)
@@ -7745,6 +7762,7 @@ spv::Id TGlslangToSpvTraverser::createSpvConstant(const glslang::TIntermTyped& n
 
     // We now know we have a specialization constant to build
 
+#ifndef GLSLANG_WEB
     // gl_WorkGroupSize is a special case until the front-end handles hierarchical specialization constants,
     // even then, it's specialization ids are handled by special case syntax in GLSL: layout(local_size_x = ...
     if (node.getType().getQualifier().builtIn == glslang::EbvWorkGroupSize) {
@@ -7759,6 +7777,7 @@ spv::Id TGlslangToSpvTraverser::createSpvConstant(const glslang::TIntermTyped& n
         }
         return builder.makeCompositeConstant(builder.makeVectorType(builder.makeUintType(32), 3), dimConstId, true);
     }
+#endif
 
     // An AST node labelled as specialization constant should be a symbol node.
     // Its initializer should either be a sub tree with constant nodes, or a constant union array.
@@ -8114,6 +8133,7 @@ void OutputSpvBin(const std::vector<unsigned int>& spirv, const char* baseName)
 // Write SPIR-V out to a text file with 32-bit hexadecimal words
 void OutputSpvHex(const std::vector<unsigned int>& spirv, const char* baseName, const char* varName)
 {
+#ifndef GLSLANG_WEB
     std::ofstream out;
     out.open(baseName, std::ios::binary | std::ios::out);
     if (out.fail())
@@ -8141,6 +8161,7 @@ void OutputSpvHex(const std::vector<unsigned int>& spirv, const char* baseName,
         out << "};";
     }
     out.close();
+#endif
 }
 
 //