1 // 2 // Copyright (C) 2016-2018 Google, Inc. 3 // Copyright (C) 2016 LunarG, Inc. 4 // 5 // All rights reserved. 6 // 7 // Redistribution and use in source and binary forms, with or without 8 // modification, are permitted provided that the following conditions 9 // are met: 10 // 11 // Redistributions of source code must retain the above copyright 12 // notice, this list of conditions and the following disclaimer. 13 // 14 // Redistributions in binary form must reproduce the above 15 // copyright notice, this list of conditions and the following 16 // disclaimer in the documentation and/or other materials provided 17 // with the distribution. 18 // 19 // Neither the name of 3Dlabs Inc. Ltd. nor the names of its 20 // contributors may be used to endorse or promote products derived 21 // from this software without specific prior written permission. 22 // 23 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 26 // FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 27 // COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 28 // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 29 // BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 30 // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 31 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 33 // ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 34 // POSSIBILITY OF SUCH DAMAGE. 35 // 36 #ifndef HLSL_PARSE_INCLUDED_ 37 #define HLSL_PARSE_INCLUDED_ 38 39 #include "../MachineIndependent/parseVersions.h" 40 #include "../MachineIndependent/ParseHelper.h" 41 #include "../MachineIndependent/attribute.h" 42 43 #include <array> 44 45 namespace glslang { 46 47 class TFunctionDeclarator; 48 49 class HlslParseContext : public TParseContextBase { 50 public: 51 HlslParseContext(TSymbolTable&, TIntermediate&, bool parsingBuiltins, 52 int version, EProfile, const SpvVersion& spvVersion, EShLanguage, TInfoSink&, 53 const TString sourceEntryPointName, 54 bool forwardCompatible = false, EShMessages messages = EShMsgDefault); 55 virtual ~HlslParseContext(); 56 void initializeExtensionBehavior() override; 57 58 void setLimits(const TBuiltInResource&) override; 59 bool parseShaderStrings(TPpContext&, TInputScanner& input, bool versionWillBeError = false) override; getGlobalUniformBlockName()60 virtual const char* getGlobalUniformBlockName() const override { return "$Global"; } setUniformBlockDefaults(TType & block)61 virtual void setUniformBlockDefaults(TType& block) const override 62 { 63 block.getQualifier().layoutPacking = globalUniformDefaults.layoutPacking; 64 block.getQualifier().layoutMatrix = globalUniformDefaults.layoutMatrix; 65 } 66 reservedPpErrorCheck(const TSourceLoc &,const char *,const char *)67 void reservedPpErrorCheck(const TSourceLoc&, const char* /*name*/, const char* /*op*/) override { } lineContinuationCheck(const TSourceLoc &,bool)68 bool lineContinuationCheck(const TSourceLoc&, bool /*endOfComment*/) override { return true; } lineDirectiveShouldSetNextLine()69 bool lineDirectiveShouldSetNextLine() const override { return true; } 70 bool builtInName(const TString&); 71 72 void handlePragma(const TSourceLoc&, const TVector<TString>&) override; 73 TIntermTyped* handleVariable(const TSourceLoc&, const TString* string); 74 TIntermTyped* handleBracketDereference(const TSourceLoc&, TIntermTyped* base, TIntermTyped* index); 75 TIntermTyped* handleBracketOperator(const TSourceLoc&, TIntermTyped* base, TIntermTyped* index); 76 77 TIntermTyped* handleBinaryMath(const TSourceLoc&, const char* str, TOperator op, TIntermTyped* left, TIntermTyped* right); 78 TIntermTyped* handleUnaryMath(const TSourceLoc&, const char* str, TOperator op, TIntermTyped* childNode); 79 TIntermTyped* handleDotDereference(const TSourceLoc&, TIntermTyped* base, const TString& field); 80 bool isBuiltInMethod(const TSourceLoc&, TIntermTyped* base, const TString& field); 81 void assignToInterface(TVariable& variable); 82 void handleFunctionDeclarator(const TSourceLoc&, TFunction& function, bool prototype); 83 TIntermAggregate* handleFunctionDefinition(const TSourceLoc&, TFunction&, const TAttributes&, TIntermNode*& entryPointTree); 84 TIntermNode* transformEntryPoint(const TSourceLoc&, TFunction&, const TAttributes&); 85 void handleEntryPointAttributes(const TSourceLoc&, const TAttributes&); 86 void transferTypeAttributes(const TSourceLoc&, const TAttributes&, TType&, bool allowEntry = false); 87 void handleFunctionBody(const TSourceLoc&, TFunction&, TIntermNode* functionBody, TIntermNode*& node); 88 void remapEntryPointIO(TFunction& function, TVariable*& returnValue, TVector<TVariable*>& inputs, TVector<TVariable*>& outputs); 89 void remapNonEntryPointIO(TFunction& function); 90 TIntermNode* handleReturnValue(const TSourceLoc&, TIntermTyped*); 91 void handleFunctionArgument(TFunction*, TIntermTyped*& arguments, TIntermTyped* newArg); 92 TIntermTyped* handleAssign(const TSourceLoc&, TOperator, TIntermTyped* left, TIntermTyped* right); 93 TIntermTyped* handleAssignToMatrixSwizzle(const TSourceLoc&, TOperator, TIntermTyped* left, TIntermTyped* right); 94 TIntermTyped* handleFunctionCall(const TSourceLoc&, TFunction*, TIntermTyped*); 95 TIntermAggregate* assignClipCullDistance(const TSourceLoc&, TOperator, int semanticId, TIntermTyped* left, TIntermTyped* right); 96 TIntermTyped* assignPosition(const TSourceLoc&, TOperator, TIntermTyped* left, TIntermTyped* right); 97 void decomposeIntrinsic(const TSourceLoc&, TIntermTyped*& node, TIntermNode* arguments); 98 void decomposeSampleMethods(const TSourceLoc&, TIntermTyped*& node, TIntermNode* arguments); 99 void decomposeStructBufferMethods(const TSourceLoc&, TIntermTyped*& node, TIntermNode* arguments); 100 void decomposeGeometryMethods(const TSourceLoc&, TIntermTyped*& node, TIntermNode* arguments); 101 void pushFrontArguments(TIntermTyped* front, TIntermTyped*& arguments); 102 void addInputArgumentConversions(const TFunction&, TIntermTyped*&); 103 void expandArguments(const TSourceLoc&, const TFunction&, TIntermTyped*&); 104 TIntermTyped* addOutputArgumentConversions(const TFunction&, TIntermOperator&); 105 void builtInOpCheck(const TSourceLoc&, const TFunction&, TIntermOperator&); 106 TFunction* makeConstructorCall(const TSourceLoc&, const TType&); 107 void handleSemantic(TSourceLoc, TQualifier&, TBuiltInVariable, const TString& upperCase); 108 void handlePackOffset(const TSourceLoc&, TQualifier&, const glslang::TString& location, 109 const glslang::TString* component); 110 void handleRegister(const TSourceLoc&, TQualifier&, const glslang::TString* profile, const glslang::TString& desc, 111 int subComponent, const glslang::TString*); 112 TIntermTyped* convertConditionalExpression(const TSourceLoc&, TIntermTyped*, bool mustBeScalar = true); 113 TIntermAggregate* handleSamplerTextureCombine(const TSourceLoc& loc, TIntermTyped* argTex, TIntermTyped* argSampler); 114 115 bool parseMatrixSwizzleSelector(const TSourceLoc&, const TString&, int cols, int rows, TSwizzleSelectors<TMatrixSelector>&); 116 int getMatrixComponentsColumn(int rows, const TSwizzleSelectors<TMatrixSelector>&); 117 void assignError(const TSourceLoc&, const char* op, TString left, TString right); 118 void unaryOpError(const TSourceLoc&, const char* op, TString operand); 119 void binaryOpError(const TSourceLoc&, const char* op, TString left, TString right); 120 void variableCheck(TIntermTyped*& nodePtr); 121 void constantValueCheck(TIntermTyped* node, const char* token); 122 void integerCheck(const TIntermTyped* node, const char* token); 123 void globalCheck(const TSourceLoc&, const char* token); 124 bool constructorError(const TSourceLoc&, TIntermNode*, TFunction&, TOperator, TType&); 125 void arraySizeCheck(const TSourceLoc&, TIntermTyped* expr, TArraySize&); 126 void arraySizeRequiredCheck(const TSourceLoc&, const TArraySizes&); 127 void structArrayCheck(const TSourceLoc&, const TType& structure); 128 bool voidErrorCheck(const TSourceLoc&, const TString&, TBasicType); 129 void globalQualifierFix(const TSourceLoc&, TQualifier&); 130 bool structQualifierErrorCheck(const TSourceLoc&, const TPublicType& pType); 131 void mergeQualifiers(TQualifier& dst, const TQualifier& src); 132 int computeSamplerTypeIndex(TSampler&); 133 TSymbol* redeclareBuiltinVariable(const TSourceLoc&, const TString&, const TQualifier&, const TShaderQualifiers&); 134 void paramFix(TType& type); 135 void specializationCheck(const TSourceLoc&, const TType&, const char* op); 136 137 void setLayoutQualifier(const TSourceLoc&, TQualifier&, TString&); 138 void setLayoutQualifier(const TSourceLoc&, TQualifier&, TString&, const TIntermTyped*); 139 void setSpecConstantId(const TSourceLoc&, TQualifier&, int value); 140 void mergeObjectLayoutQualifiers(TQualifier& dest, const TQualifier& src, bool inheritOnly); 141 void checkNoShaderLayouts(const TSourceLoc&, const TShaderQualifiers&); 142 143 const TFunction* findFunction(const TSourceLoc& loc, TFunction& call, bool& builtIn, int& thisDepth, TIntermTyped*& args); 144 void addGenMulArgumentConversion(const TSourceLoc& loc, TFunction& call, TIntermTyped*& args); 145 void declareTypedef(const TSourceLoc&, const TString& identifier, const TType&); 146 void declareStruct(const TSourceLoc&, TString& structName, TType&); 147 TSymbol* lookupUserType(const TString&, TType&); 148 TIntermNode* declareVariable(const TSourceLoc&, const TString& identifier, TType&, TIntermTyped* initializer = 0); 149 void lengthenList(const TSourceLoc&, TIntermSequence& list, int size, TIntermTyped* scalarInit); 150 TIntermTyped* handleConstructor(const TSourceLoc&, TIntermTyped*, const TType&); 151 TIntermTyped* addConstructor(const TSourceLoc&, TIntermTyped*, const TType&); 152 TIntermTyped* convertArray(TIntermTyped*, const TType&); 153 TIntermTyped* constructAggregate(TIntermNode*, const TType&, int, const TSourceLoc&); 154 TIntermTyped* constructBuiltIn(const TType&, TOperator, TIntermTyped*, const TSourceLoc&, bool subset); 155 void declareBlock(const TSourceLoc&, TType&, const TString* instanceName = 0); 156 void declareStructBufferCounter(const TSourceLoc& loc, const TType& bufferType, const TString& name); 157 void fixBlockLocations(const TSourceLoc&, TQualifier&, TTypeList&, bool memberWithLocation, bool memberWithoutLocation); 158 void fixXfbOffsets(TQualifier&, TTypeList&); 159 void fixBlockUniformOffsets(const TQualifier&, TTypeList&); 160 void addQualifierToExisting(const TSourceLoc&, TQualifier, const TString& identifier); 161 void addQualifierToExisting(const TSourceLoc&, TQualifier, TIdentifierList&); 162 void updateStandaloneQualifierDefaults(const TSourceLoc&, const TPublicType&); 163 void wrapupSwitchSubsequence(TIntermAggregate* statements, TIntermNode* branchNode); 164 TIntermNode* addSwitch(const TSourceLoc&, TIntermTyped* expression, TIntermAggregate* body, const TAttributes&); 165 nestLooping()166 void nestLooping() { ++loopNestingLevel; } unnestLooping()167 void unnestLooping() { --loopNestingLevel; } nestAnnotations()168 void nestAnnotations() { ++annotationNestingLevel; } unnestAnnotations()169 void unnestAnnotations() { --annotationNestingLevel; } getAnnotationNestingLevel()170 int getAnnotationNestingLevel() { return annotationNestingLevel; } pushScope()171 void pushScope() { symbolTable.push(); } popScope()172 void popScope() { symbolTable.pop(0); } 173 174 void pushThisScope(const TType&, const TVector<TFunctionDeclarator>&); popThisScope()175 void popThisScope() { symbolTable.pop(0); } 176 pushImplicitThis(TVariable * thisParameter)177 void pushImplicitThis(TVariable* thisParameter) { implicitThisStack.push_back(thisParameter); } popImplicitThis()178 void popImplicitThis() { implicitThisStack.pop_back(); } getImplicitThis(int thisDepth)179 TVariable* getImplicitThis(int thisDepth) const { return implicitThisStack[implicitThisStack.size() - thisDepth]; } 180 181 void pushNamespace(const TString& name); 182 void popNamespace(); 183 void getFullNamespaceName(TString*&) const; 184 void addScopeMangler(TString&); 185 beginParameterParsing(TFunction & function)186 void beginParameterParsing(TFunction& function) 187 { 188 parsingEntrypointParameters = isEntrypointName(function.getName()); 189 } 190 pushSwitchSequence(TIntermSequence * sequence)191 void pushSwitchSequence(TIntermSequence* sequence) { switchSequenceStack.push_back(sequence); } popSwitchSequence()192 void popSwitchSequence() { switchSequenceStack.pop_back(); } 193 194 virtual void growGlobalUniformBlock(const TSourceLoc&, TType&, const TString& memberName, 195 TTypeList* typeList = nullptr) override; 196 197 // Apply L-value conversions. E.g, turning a write to a RWTexture into an ImageStore. 198 TIntermTyped* handleLvalue(const TSourceLoc&, const char* op, TIntermTyped*& node); 199 bool lValueErrorCheck(const TSourceLoc&, const char* op, TIntermTyped*) override; 200 201 TLayoutFormat getLayoutFromTxType(const TSourceLoc&, const TType&); 202 203 bool handleOutputGeometry(const TSourceLoc&, const TLayoutGeometry& geometry); 204 bool handleInputGeometry(const TSourceLoc&, const TLayoutGeometry& geometry); 205 206 // Determine selection control from attributes 207 void handleSelectionAttributes(const TSourceLoc& loc, TIntermSelection*, const TAttributes& attributes); 208 void handleSwitchAttributes(const TSourceLoc& loc, TIntermSwitch*, const TAttributes& attributes); 209 210 // Determine loop control from attributes 211 void handleLoopAttributes(const TSourceLoc& loc, TIntermLoop*, const TAttributes& attributes); 212 213 // Share struct buffer deep types 214 void shareStructBufferType(TType&); 215 216 // Set texture return type of the given sampler. Returns success (not all types are valid). 217 bool setTextureReturnType(TSampler& sampler, const TType& retType, const TSourceLoc& loc); 218 219 // Obtain the sampler return type of the given sampler in retType. 220 void getTextureReturnType(const TSampler& sampler, TType& retType) const; 221 222 TAttributeType attributeFromName(const TString& nameSpace, const TString& name) const; 223 224 protected: 225 struct TFlattenData { TFlattenDataTFlattenData226 TFlattenData() : nextBinding(TQualifier::layoutBindingEnd), 227 nextLocation(TQualifier::layoutLocationEnd) { } TFlattenDataTFlattenData228 TFlattenData(int nb, int nl) : nextBinding(nb), nextLocation(nl) { } 229 230 TVector<TVariable*> members; // individual flattened variables 231 TVector<int> offsets; // offset to next tree level 232 unsigned int nextBinding; // next binding to use. 233 unsigned int nextLocation; // next location to use 234 }; 235 236 void fixConstInit(const TSourceLoc&, const TString& identifier, TType& type, TIntermTyped*& initializer); 237 void inheritGlobalDefaults(TQualifier& dst) const; 238 TVariable* makeInternalVariable(const char* name, const TType&) const; makeInternalVariable(const TString & name,const TType & type)239 TVariable* makeInternalVariable(const TString& name, const TType& type) const { 240 return makeInternalVariable(name.c_str(), type); 241 } 242 TIntermSymbol* makeInternalVariableNode(const TSourceLoc&, const char* name, const TType&) const; 243 TVariable* declareNonArray(const TSourceLoc&, const TString& identifier, const TType&, bool track); 244 void declareArray(const TSourceLoc&, const TString& identifier, const TType&, TSymbol*&, bool track); 245 TIntermNode* executeInitializer(const TSourceLoc&, TIntermTyped* initializer, TVariable* variable); 246 TIntermTyped* convertInitializerList(const TSourceLoc&, const TType&, TIntermTyped* initializer, TIntermTyped* scalarInit); 247 bool isScalarConstructor(const TIntermNode*); 248 TOperator mapAtomicOp(const TSourceLoc& loc, TOperator op, bool isImage); isEntrypointName(const TString & name)249 bool isEntrypointName(const TString& name) { return name.compare(intermediate.getEntryPointName().c_str()) == 0; } 250 251 // Return true if this node requires L-value conversion (e.g, to an imageStore). 252 bool shouldConvertLValue(const TIntermNode*) const; 253 254 // Array and struct flattening 255 TIntermTyped* flattenAccess(TIntermTyped* base, int member); 256 TIntermTyped* flattenAccess(int uniqueId, int member, TStorageQualifier outerStorage, const TType&, int subset = -1); 257 int findSubtreeOffset(const TIntermNode&) const; 258 int findSubtreeOffset(const TType&, int subset, const TVector<int>& offsets) const; 259 bool shouldFlatten(const TType&, TStorageQualifier, bool topLevel) const; 260 bool wasFlattened(const TIntermTyped* node) const; wasFlattened(int id)261 bool wasFlattened(int id) const { return flattenMap.find(id) != flattenMap.end(); } 262 int addFlattenedMember(const TVariable&, const TType&, TFlattenData&, const TString& name, bool linkage, 263 const TQualifier& outerQualifier, const TArraySizes* builtInArraySizes); 264 265 // Structure splitting (splits interstage built-in types into its own struct) 266 void split(const TVariable&); 267 void splitBuiltIn(const TString& baseName, const TType& memberType, const TArraySizes*, const TQualifier&); 268 const TType& split(const TType& type, const TString& name, const TQualifier&); 269 bool wasSplit(const TIntermTyped* node) const; wasSplit(int id)270 bool wasSplit(int id) const { return splitNonIoVars.find(id) != splitNonIoVars.end(); } 271 TVariable* getSplitNonIoVar(int id) const; 272 void addPatchConstantInvocation(); 273 void fixTextureShadowModes(); 274 void finalizeAppendMethods(); 275 TIntermTyped* makeIntegerIndex(TIntermTyped*); 276 277 void fixBuiltInIoType(TType&); 278 279 void flatten(const TVariable& variable, bool linkage, bool arrayed = false); 280 int flatten(const TVariable& variable, const TType&, TFlattenData&, TString name, bool linkage, 281 const TQualifier& outerQualifier, const TArraySizes* builtInArraySizes); 282 int flattenStruct(const TVariable& variable, const TType&, TFlattenData&, TString name, bool linkage, 283 const TQualifier& outerQualifier, const TArraySizes* builtInArraySizes); 284 int flattenArray(const TVariable& variable, const TType&, TFlattenData&, TString name, bool linkage, 285 const TQualifier& outerQualifier); 286 287 bool hasUniform(const TQualifier& qualifier) const; 288 void clearUniform(TQualifier& qualifier); 289 bool isInputBuiltIn(const TQualifier& qualifier) const; 290 bool hasInput(const TQualifier& qualifier) const; 291 void correctOutput(TQualifier& qualifier); 292 bool isOutputBuiltIn(const TQualifier& qualifier) const; 293 bool hasOutput(const TQualifier& qualifier) const; 294 void correctInput(TQualifier& qualifier); 295 void correctUniform(TQualifier& qualifier); 296 void clearUniformInputOutput(TQualifier& qualifier); 297 298 // Test method names 299 bool isStructBufferMethod(const TString& name) const; 300 void counterBufferType(const TSourceLoc& loc, TType& type); 301 302 // Return standard sample position array 303 TIntermConstantUnion* getSamplePosArray(int count); 304 305 TType* getStructBufferContentType(const TType& type) const; isStructBufferType(const TType & type)306 bool isStructBufferType(const TType& type) const { return getStructBufferContentType(type) != nullptr; } 307 TIntermTyped* indexStructBufferContent(const TSourceLoc& loc, TIntermTyped* buffer) const; 308 TIntermTyped* getStructBufferCounter(const TSourceLoc& loc, TIntermTyped* buffer); 309 TString getStructBuffCounterName(const TString&) const; 310 void addStructBuffArguments(const TSourceLoc& loc, TIntermAggregate*&); 311 void addStructBufferHiddenCounterParam(const TSourceLoc& loc, TParameter&, TIntermAggregate*&); 312 313 // Return true if this type is a reference. This is not currently a type method in case that's 314 // a language specific answer. isReference(const TType & type)315 bool isReference(const TType& type) const { return isStructBufferType(type); } 316 317 // Return true if this a buffer type that has an associated counter buffer. 318 bool hasStructBuffCounter(const TType&) const; 319 320 // Finalization step: remove unused buffer blocks from linkage (we don't know until the 321 // shader is entirely compiled) 322 void removeUnusedStructBufferCounters(); 323 324 static bool isClipOrCullDistance(TBuiltInVariable); isClipOrCullDistance(const TQualifier & qual)325 static bool isClipOrCullDistance(const TQualifier& qual) { return isClipOrCullDistance(qual.builtIn); } isClipOrCullDistance(const TType & type)326 static bool isClipOrCullDistance(const TType& type) { return isClipOrCullDistance(type.getQualifier()); } 327 328 // Find the patch constant function (issues error, returns nullptr if not found) 329 const TFunction* findPatchConstantFunction(const TSourceLoc& loc); 330 331 // Pass through to base class after remembering built-in mappings. 332 using TParseContextBase::trackLinkage; 333 void trackLinkage(TSymbol& variable) override; 334 335 void finish() override; // post-processing 336 337 // Linkage symbol helpers 338 TIntermSymbol* findTessLinkageSymbol(TBuiltInVariable biType) const; 339 340 // Current state of parsing 341 int annotationNestingLevel; // 0 if outside all annotations 342 343 HlslParseContext(HlslParseContext&); 344 HlslParseContext& operator=(HlslParseContext&); 345 346 static const int maxSamplerIndex = EsdNumDims * (EbtNumTypes * (2 * 2 * 2)); // see computeSamplerTypeIndex() 347 TQualifier globalBufferDefaults; 348 TQualifier globalUniformDefaults; 349 TQualifier globalInputDefaults; 350 TQualifier globalOutputDefaults; 351 TString currentCaller; // name of last function body entered (not valid when at global scope) 352 TIdSetType inductiveLoopIds; 353 TVector<TIntermTyped*> needsIndexLimitationChecking; 354 355 // 356 // Geometry shader input arrays: 357 // - array sizing is based on input primitive and/or explicit size 358 // 359 // Tessellation control output arrays: 360 // - array sizing is based on output layout(vertices=...) and/or explicit size 361 // 362 // Both: 363 // - array sizing is retroactive 364 // - built-in block redeclarations interact with this 365 // 366 // Design: 367 // - use a per-context "resize-list", a list of symbols whose array sizes 368 // can be fixed 369 // 370 // - the resize-list starts empty at beginning of user-shader compilation, it does 371 // not have built-ins in it 372 // 373 // - on built-in array use: copyUp() symbol and add it to the resize-list 374 // 375 // - on user array declaration: add it to the resize-list 376 // 377 // - on block redeclaration: copyUp() symbol and add it to the resize-list 378 // * note, that appropriately gives an error if redeclaring a block that 379 // was already used and hence already copied-up 380 // 381 // - on seeing a layout declaration that sizes the array, fix everything in the 382 // resize-list, giving errors for mismatch 383 // 384 // - on seeing an array size declaration, give errors on mismatch between it and previous 385 // array-sizing declarations 386 // 387 TVector<TSymbol*> ioArraySymbolResizeList; 388 389 TMap<int, TFlattenData> flattenMap; 390 391 // IO-type map. Maps a pure symbol-table form of a structure-member list into 392 // each of the (up to) three kinds of IO, as each as different allowed decorations, 393 // but HLSL allows mixing all in the same structure. 394 struct tIoKinds { 395 TTypeList* input; 396 TTypeList* output; 397 TTypeList* uniform; 398 }; 399 TMap<const TTypeList*, tIoKinds> ioTypeMap; 400 401 // Structure splitting data: 402 TMap<int, TVariable*> splitNonIoVars; // variables with the built-in interstage IO removed, indexed by unique ID. 403 404 // Structuredbuffer shared types. Typically there are only a few. 405 TVector<TType*> structBufferTypes; 406 407 // This tracks texture sample user structure return types. Only a limited number are supported, as 408 // may fit in TSampler::structReturnIndex. 409 TVector<TTypeList*> textureReturnStruct; 410 411 TMap<TString, bool> structBufferCounter; // true if counter buffer is in use 412 413 // The built-in interstage IO map considers e.g, EvqPosition on input and output separately, so that we 414 // can build the linkage correctly if position appears on both sides. Otherwise, multiple positions 415 // are considered identical. 416 struct tInterstageIoData { tInterstageIoDatatInterstageIoData417 tInterstageIoData(TBuiltInVariable bi, TStorageQualifier q) : 418 builtIn(bi), storage(q) { } 419 420 TBuiltInVariable builtIn; 421 TStorageQualifier storage; 422 423 // ordering for maps 424 bool operator<(const tInterstageIoData d) const { 425 return (builtIn != d.builtIn) ? (builtIn < d.builtIn) : (storage < d.storage); 426 } 427 }; 428 429 TMap<tInterstageIoData, TVariable*> splitBuiltIns; // split built-ins, indexed by built-in type. 430 TVariable* inputPatch; // input patch is special for PCF: it's the only non-builtin PCF input, 431 // and is handled as a pseudo-builtin. 432 433 unsigned int nextInLocation; 434 unsigned int nextOutLocation; 435 436 TFunction* entryPointFunction; 437 TIntermNode* entryPointFunctionBody; 438 439 TString patchConstantFunctionName; // hull shader patch constant function name, from function level attribute. 440 TMap<TBuiltInVariable, TSymbol*> builtInTessLinkageSymbols; // used for tessellation, finding declared built-ins 441 442 TVector<TString> currentTypePrefix; // current scoping prefix for nested structures 443 TVector<TVariable*> implicitThisStack; // currently active 'this' variables for nested structures 444 445 TVariable* gsStreamOutput; // geometry shader stream outputs, for emit (Append method) 446 447 TVariable* clipDistanceOutput; // synthesized clip distance out variable (shader might have >1) 448 TVariable* cullDistanceOutput; // synthesized cull distance out variable (shader might have >1) 449 TVariable* clipDistanceInput; // synthesized clip distance in variable (shader might have >1) 450 TVariable* cullDistanceInput; // synthesized cull distance in variable (shader might have >1) 451 452 static const int maxClipCullRegs = 2; 453 std::array<int, maxClipCullRegs> clipSemanticNSizeIn; // vector, indexed by clip semantic ID 454 std::array<int, maxClipCullRegs> cullSemanticNSizeIn; // vector, indexed by cull semantic ID 455 std::array<int, maxClipCullRegs> clipSemanticNSizeOut; // vector, indexed by clip semantic ID 456 std::array<int, maxClipCullRegs> cullSemanticNSizeOut; // vector, indexed by cull semantic ID 457 458 // This tracks the first (mip level) argument to the .mips[][] operator. Since this can be nested as 459 // in tx.mips[tx.mips[0][1].x][2], we need a stack. We also track the TSourceLoc for error reporting 460 // purposes. 461 struct tMipsOperatorData { tMipsOperatorDatatMipsOperatorData462 tMipsOperatorData(TSourceLoc l, TIntermTyped* m) : loc(l), mipLevel(m) { } 463 TSourceLoc loc; 464 TIntermTyped* mipLevel; 465 }; 466 467 TVector<tMipsOperatorData> mipsOperatorMipArg; 468 469 // The geometry output stream is not copied out from the entry point as a typical output variable 470 // is. It's written via EmitVertex (hlsl=Append), which may happen in arbitrary control flow. 471 // For this we need the real output symbol. Since it may not be known at the time and Append() 472 // method is parsed, the sequence will be patched during finalization. 473 struct tGsAppendData { 474 TIntermAggregate* node; 475 TSourceLoc loc; 476 }; 477 478 TVector<tGsAppendData> gsAppends; 479 480 // A texture object may be used with shadow and non-shadow samplers, but both may not be 481 // alive post-DCE in the same shader. We do not know at compilation time which are alive: that's 482 // only known post-DCE. If a texture is used both ways, we create two textures, and 483 // leave the elimiation of one to the optimizer. This maps the shader variant to 484 // the shadow variant. 485 // 486 // This can be removed if and when the texture shadow code in 487 // HlslParseContext::handleSamplerTextureCombine is removed. 488 struct tShadowTextureSymbols { tShadowTextureSymbolstShadowTextureSymbols489 tShadowTextureSymbols() { symId.fill(-1); } 490 settShadowTextureSymbols491 void set(bool shadow, int id) { symId[int(shadow)] = id; } gettShadowTextureSymbols492 int get(bool shadow) const { return symId[int(shadow)]; } 493 494 // True if this texture has been seen with both shadow and non-shadow modes overloadedtShadowTextureSymbols495 bool overloaded() const { return symId[0] != -1 && symId[1] != -1; } isShadowIdtShadowTextureSymbols496 bool isShadowId(int id) const { return symId[1] == id; } 497 498 private: 499 std::array<int, 2> symId; 500 }; 501 502 TMap<int, tShadowTextureSymbols*> textureShadowVariant; 503 bool parsingEntrypointParameters; 504 }; 505 506 // This is the prefix we use for built-in methods to avoid namespace collisions with 507 // global scope user functions. 508 // TODO: this would be better as a nonparseable character, but that would 509 // require changing the scanner. 510 #define BUILTIN_PREFIX "__BI_" 511 512 } // end namespace glslang 513 514 #endif // HLSL_PARSE_INCLUDED_ 515