2 // Copyright (C) 2002-2005 3Dlabs Inc. Ltd.
3 // Copyright (C) 2012-2015 LunarG, Inc.
4 // Copyright (C) 2015-2018 Google, Inc.
5 // Copyright (C) 2017, 2019 ARM Limited.
6 // Modifications Copyright (C) 2020 Advanced Micro Devices, Inc. All rights reserved.
8 // All rights reserved.
10 // Redistribution and use in source and binary forms, with or without
11 // modification, are permitted provided that the following conditions
14 // Redistributions of source code must retain the above copyright
15 // notice, this list of conditions and the following disclaimer.
17 // Redistributions in binary form must reproduce the above
18 // copyright notice, this list of conditions and the following
19 // disclaimer in the documentation and/or other materials provided
20 // with the distribution.
22 // Neither the name of 3Dlabs Inc. Ltd. nor the names of its
23 // contributors may be used to endorse or promote products derived
24 // from this software without specific prior written permission.
26 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
29 // FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
30 // COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
31 // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
32 // BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
33 // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
34 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
36 // ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 // POSSIBILITY OF SUCH DAMAGE.
40 #include "ParseHelper.h"
43 #include "../OSDependent/osinclude.h"
46 #include "preprocessor/PpContext.h"
48 extern int yyparse(glslang::TParseContext*);
52 TParseContext::TParseContext(TSymbolTable& symbolTable, TIntermediate& interm, bool parsingBuiltins,
53 int version, EProfile profile, const SpvVersion& spvVersion, EShLanguage language,
54 TInfoSink& infoSink, bool forwardCompatible, EShMessages messages,
55 const TString* entryPoint) :
56 TParseContextBase(symbolTable, interm, parsingBuiltins, version, profile, spvVersion, language,
57 infoSink, forwardCompatible, messages, entryPoint),
60 limits(resources.limits)
63 atomicUintOffsets(nullptr), anyIndexLimits(false)
66 // decide whether precision qualifiers should be ignored or respected
67 if (isEsProfile() || spvVersion.vulkan > 0) {
68 precisionManager.respectPrecisionQualifiers();
69 if (! parsingBuiltins && language == EShLangFragment && !isEsProfile() && spvVersion.vulkan > 0)
70 precisionManager.warnAboutDefaults();
73 setPrecisionDefaults();
75 globalUniformDefaults.clear();
76 globalUniformDefaults.layoutMatrix = ElmColumnMajor;
77 globalUniformDefaults.layoutPacking = spvVersion.spv != 0 ? ElpStd140 : ElpShared;
79 globalBufferDefaults.clear();
80 globalBufferDefaults.layoutMatrix = ElmColumnMajor;
81 globalBufferDefaults.layoutPacking = spvVersion.spv != 0 ? ElpStd430 : ElpShared;
83 // use storage buffer on SPIR-V 1.3 and up
84 if (spvVersion.spv >= EShTargetSpv_1_3)
85 intermediate.setUseStorageBuffer();
87 globalInputDefaults.clear();
88 globalOutputDefaults.clear();
90 globalSharedDefaults.clear();
91 globalSharedDefaults.layoutMatrix = ElmColumnMajor;
92 globalSharedDefaults.layoutPacking = ElpStd430;
95 // "Shaders in the transform
96 // feedback capturing mode have an initial global default of
97 // layout(xfb_buffer = 0) out;"
98 if (language == EShLangVertex ||
99 language == EShLangTessControl ||
100 language == EShLangTessEvaluation ||
101 language == EShLangGeometry)
102 globalOutputDefaults.layoutXfbBuffer = 0;
104 if (language == EShLangGeometry)
105 globalOutputDefaults.layoutStream = 0;
108 if (entryPoint != nullptr && entryPoint->size() > 0 && *entryPoint != "main")
109 infoSink.info.message(EPrefixError, "Source entry point must be \"main\"");
112 TParseContext::~TParseContext()
115 delete [] atomicUintOffsets;
119 // Set up all default precisions as needed by the current environment.
120 // Intended just as a TParseContext constructor helper.
121 void TParseContext::setPrecisionDefaults()
123 // Set all precision defaults to EpqNone, which is correct for all types
124 // when not obeying precision qualifiers, and correct for types that don't
125 // have defaults (thus getting an error on use) when obeying precision
128 for (int type = 0; type < EbtNumTypes; ++type)
129 defaultPrecision[type] = EpqNone;
131 for (int type = 0; type < maxSamplerIndex; ++type)
132 defaultSamplerPrecision[type] = EpqNone;
134 // replace with real precision defaults for those that have them
135 if (obeyPrecisionQualifiers()) {
137 // Most don't have defaults, a few default to lowp.
139 sampler.set(EbtFloat, Esd2D);
140 defaultSamplerPrecision[computeSamplerTypeIndex(sampler)] = EpqLow;
141 sampler.set(EbtFloat, EsdCube);
142 defaultSamplerPrecision[computeSamplerTypeIndex(sampler)] = EpqLow;
143 sampler.set(EbtFloat, Esd2D);
144 sampler.setExternal(true);
145 defaultSamplerPrecision[computeSamplerTypeIndex(sampler)] = EpqLow;
148 // If we are parsing built-in computational variables/functions, it is meaningful to record
149 // whether the built-in has no precision qualifier, as that ambiguity
150 // is used to resolve the precision from the supplied arguments/operands instead.
151 // So, we don't actually want to replace EpqNone with a default precision for built-ins.
152 if (! parsingBuiltins) {
153 if (isEsProfile() && language == EShLangFragment) {
154 defaultPrecision[EbtInt] = EpqMedium;
155 defaultPrecision[EbtUint] = EpqMedium;
157 defaultPrecision[EbtInt] = EpqHigh;
158 defaultPrecision[EbtUint] = EpqHigh;
159 defaultPrecision[EbtFloat] = EpqHigh;
162 if (!isEsProfile()) {
164 // All sampler precisions default to highp.
165 for (int type = 0; type < maxSamplerIndex; ++type)
166 defaultSamplerPrecision[type] = EpqHigh;
170 defaultPrecision[EbtSampler] = EpqLow;
171 defaultPrecision[EbtAtomicUint] = EpqHigh;
175 void TParseContext::setLimits(const TBuiltInResource& r)
178 intermediate.setLimits(r);
181 anyIndexLimits = ! limits.generalAttributeMatrixVectorIndexing ||
182 ! limits.generalConstantMatrixVectorIndexing ||
183 ! limits.generalSamplerIndexing ||
184 ! limits.generalUniformIndexing ||
185 ! limits.generalVariableIndexing ||
186 ! limits.generalVaryingIndexing;
189 // "Each binding point tracks its own current default offset for
190 // inheritance of subsequent variables using the same binding. The initial state of compilation is that all
191 // binding points have an offset of 0."
192 atomicUintOffsets = new int[resources.maxAtomicCounterBindings];
193 for (int b = 0; b < resources.maxAtomicCounterBindings; ++b)
194 atomicUintOffsets[b] = 0;
199 // Parse an array of strings using yyparse, going through the
200 // preprocessor to tokenize the shader strings, then through
203 // Returns true for successful acceptance of the shader, false if any errors.
205 bool TParseContext::parseShaderStrings(TPpContext& ppContext, TInputScanner& input, bool versionWillBeError)
207 currentScanner = &input;
208 ppContext.setInput(input, versionWillBeError);
213 return numErrors == 0;
216 // This is called from bison when it has a parse (syntax) error
217 // Note though that to stop cascading errors, we set EOF, which
218 // will usually cause a syntax error, so be more accurate that
219 // compilation is terminating.
220 void TParseContext::parserError(const char* s)
222 if (! getScanner()->atEndOfInput() || numErrors == 0)
223 error(getCurrentLoc(), "", "", s, "");
225 error(getCurrentLoc(), "compilation terminated", "", "");
228 void TParseContext::growGlobalUniformBlock(const TSourceLoc& loc, TType& memberType, const TString& memberName, TTypeList* typeList)
230 bool createBlock = globalUniformBlock == nullptr;
233 globalUniformBinding = intermediate.getGlobalUniformBinding();
234 globalUniformSet = intermediate.getGlobalUniformSet();
237 // use base class function to create/expand block
238 TParseContextBase::growGlobalUniformBlock(loc, memberType, memberName, typeList);
240 if (spvVersion.vulkan > 0 && spvVersion.vulkanRelaxed) {
241 // check for a block storage override
242 TBlockStorageClass storageOverride = intermediate.getBlockStorageOverride(getGlobalUniformBlockName());
243 TQualifier& qualifier = globalUniformBlock->getWritableType().getQualifier();
244 qualifier.defaultBlock = true;
246 if (storageOverride != EbsNone) {
248 // Remap block storage
249 qualifier.setBlockStorage(storageOverride);
251 // check that the change didn't create errors
252 blockQualifierCheck(loc, qualifier, false);
255 // remap meber storage as well
256 memberType.getQualifier().setBlockStorage(storageOverride);
261 void TParseContext::growAtomicCounterBlock(int binding, const TSourceLoc& loc, TType& memberType, const TString& memberName, TTypeList* typeList)
263 bool createBlock = atomicCounterBuffers.find(binding) == atomicCounterBuffers.end();
266 atomicCounterBlockSet = intermediate.getAtomicCounterBlockSet();
269 // use base class function to create/expand block
270 TParseContextBase::growAtomicCounterBlock(binding, loc, memberType, memberName, typeList);
271 TQualifier& qualifier = atomicCounterBuffers[binding]->getWritableType().getQualifier();
272 qualifier.defaultBlock = true;
274 if (spvVersion.vulkan > 0 && spvVersion.vulkanRelaxed) {
275 // check for a Block storage override
276 TBlockStorageClass storageOverride = intermediate.getBlockStorageOverride(getAtomicCounterBlockName());
278 if (storageOverride != EbsNone) {
280 // Remap block storage
282 qualifier.setBlockStorage(storageOverride);
284 // check that the change didn't create errors
285 blockQualifierCheck(loc, qualifier, false);
288 // remap meber storage as well
289 memberType.getQualifier().setBlockStorage(storageOverride);
294 const char* TParseContext::getGlobalUniformBlockName() const
296 const char* name = intermediate.getGlobalUniformBlockName();
297 if (std::string(name) == "")
298 return "gl_DefaultUniformBlock";
302 void TParseContext::finalizeGlobalUniformBlockLayout(TVariable&)
305 void TParseContext::setUniformBlockDefaults(TType& block) const
307 block.getQualifier().layoutPacking = ElpStd140;
308 block.getQualifier().layoutMatrix = ElmColumnMajor;
312 const char* TParseContext::getAtomicCounterBlockName() const
314 const char* name = intermediate.getAtomicCounterBlockName();
315 if (std::string(name) == "")
316 return "gl_AtomicCounterBlock";
320 void TParseContext::finalizeAtomicCounterBlockLayout(TVariable&)
324 void TParseContext::setAtomicCounterBlockDefaults(TType& block) const
326 block.getQualifier().layoutPacking = ElpStd430;
327 block.getQualifier().layoutMatrix = ElmRowMajor;
330 void TParseContext::setInvariant(const TSourceLoc& loc, const char* builtin) {
331 TSymbol* symbol = symbolTable.find(builtin);
332 if (symbol && symbol->getType().getQualifier().isPipeOutput()) {
333 if (intermediate.inIoAccessed(builtin))
334 warn(loc, "changing qualification after use", "invariant", builtin);
335 TSymbol* csymbol = symbolTable.copyUp(symbol);
336 csymbol->getWritableType().getQualifier().invariant = true;
340 void TParseContext::handlePragma(const TSourceLoc& loc, const TVector<TString>& tokens)
344 pragmaCallback(loc.line, tokens);
346 if (tokens.size() == 0)
349 if (tokens[0].compare("optimize") == 0) {
350 if (tokens.size() != 4) {
351 error(loc, "optimize pragma syntax is incorrect", "#pragma", "");
355 if (tokens[1].compare("(") != 0) {
356 error(loc, "\"(\" expected after 'optimize' keyword", "#pragma", "");
360 if (tokens[2].compare("on") == 0)
361 contextPragma.optimize = true;
362 else if (tokens[2].compare("off") == 0)
363 contextPragma.optimize = false;
366 // If an implementation does not recognize the tokens following #pragma, then it will ignore that pragma.
367 warn(loc, "\"on\" or \"off\" expected after '(' for 'optimize' pragma", "#pragma", "");
371 if (tokens[3].compare(")") != 0) {
372 error(loc, "\")\" expected to end 'optimize' pragma", "#pragma", "");
375 } else if (tokens[0].compare("debug") == 0) {
376 if (tokens.size() != 4) {
377 error(loc, "debug pragma syntax is incorrect", "#pragma", "");
381 if (tokens[1].compare("(") != 0) {
382 error(loc, "\"(\" expected after 'debug' keyword", "#pragma", "");
386 if (tokens[2].compare("on") == 0)
387 contextPragma.debug = true;
388 else if (tokens[2].compare("off") == 0)
389 contextPragma.debug = false;
392 // If an implementation does not recognize the tokens following #pragma, then it will ignore that pragma.
393 warn(loc, "\"on\" or \"off\" expected after '(' for 'debug' pragma", "#pragma", "");
397 if (tokens[3].compare(")") != 0) {
398 error(loc, "\")\" expected to end 'debug' pragma", "#pragma", "");
401 } else if (spvVersion.spv > 0 && tokens[0].compare("use_storage_buffer") == 0) {
402 if (tokens.size() != 1)
403 error(loc, "extra tokens", "#pragma", "");
404 intermediate.setUseStorageBuffer();
405 } else if (spvVersion.spv > 0 && tokens[0].compare("use_vulkan_memory_model") == 0) {
406 if (tokens.size() != 1)
407 error(loc, "extra tokens", "#pragma", "");
408 intermediate.setUseVulkanMemoryModel();
409 } else if (spvVersion.spv > 0 && tokens[0].compare("use_variable_pointers") == 0) {
410 if (tokens.size() != 1)
411 error(loc, "extra tokens", "#pragma", "");
412 if (spvVersion.spv < glslang::EShTargetSpv_1_3)
413 error(loc, "requires SPIR-V 1.3", "#pragma use_variable_pointers", "");
414 intermediate.setUseVariablePointers();
415 } else if (tokens[0].compare("once") == 0) {
416 warn(loc, "not implemented", "#pragma once", "");
417 } else if (tokens[0].compare("glslang_binary_double_output") == 0) {
418 intermediate.setBinaryDoubleOutput();
419 } else if (spvVersion.spv > 0 && tokens[0].compare("STDGL") == 0 &&
420 tokens[1].compare("invariant") == 0 && tokens[3].compare("all") == 0) {
421 intermediate.setInvariantAll();
422 // Set all builtin out variables invariant if declared
423 setInvariant(loc, "gl_Position");
424 setInvariant(loc, "gl_PointSize");
425 setInvariant(loc, "gl_ClipDistance");
426 setInvariant(loc, "gl_CullDistance");
427 setInvariant(loc, "gl_TessLevelOuter");
428 setInvariant(loc, "gl_TessLevelInner");
429 setInvariant(loc, "gl_PrimitiveID");
430 setInvariant(loc, "gl_Layer");
431 setInvariant(loc, "gl_ViewportIndex");
432 setInvariant(loc, "gl_FragDepth");
433 setInvariant(loc, "gl_SampleMask");
434 setInvariant(loc, "gl_ClipVertex");
435 setInvariant(loc, "gl_FrontColor");
436 setInvariant(loc, "gl_BackColor");
437 setInvariant(loc, "gl_FrontSecondaryColor");
438 setInvariant(loc, "gl_BackSecondaryColor");
439 setInvariant(loc, "gl_TexCoord");
440 setInvariant(loc, "gl_FogFragCoord");
441 setInvariant(loc, "gl_FragColor");
442 setInvariant(loc, "gl_FragData");
448 // Handle seeing a variable identifier in the grammar.
450 TIntermTyped* TParseContext::handleVariable(const TSourceLoc& loc, TSymbol* symbol, const TString* string)
452 TIntermTyped* node = nullptr;
454 // Error check for requiring specific extensions present.
455 if (symbol && symbol->getNumExtensions())
456 requireExtensions(loc, symbol->getNumExtensions(), symbol->getExtensions(), symbol->getName().c_str());
459 if (symbol && symbol->isReadOnly()) {
460 // All shared things containing an unsized array must be copied up
461 // on first use, so that all future references will share its array structure,
462 // so that editing the implicit size will effect all nodes consuming it,
463 // and so that editing the implicit size won't change the shared one.
465 // If this is a variable or a block, check it and all it contains, but if this
466 // is a member of an anonymous block, check the whole block, as the whole block
467 // will need to be copied up if it contains an unsized array.
469 // This check is being done before the block-name check further down, so guard
471 if (!symbol->getType().isUnusableName()) {
472 if (symbol->getType().containsUnsizedArray() ||
473 (symbol->getAsAnonMember() &&
474 symbol->getAsAnonMember()->getAnonContainer().getType().containsUnsizedArray()))
475 makeEditable(symbol);
480 const TVariable* variable;
481 const TAnonMember* anon = symbol ? symbol->getAsAnonMember() : nullptr;
483 // It was a member of an anonymous container.
485 // Create a subtree for its dereference.
486 variable = anon->getAnonContainer().getAsVariable();
487 TIntermTyped* container = intermediate.addSymbol(*variable, loc);
488 TIntermTyped* constNode = intermediate.addConstantUnion(anon->getMemberNumber(), loc);
489 node = intermediate.addIndex(EOpIndexDirectStruct, container, constNode, loc);
491 node->setType(*(*variable->getType().getStruct())[anon->getMemberNumber()].type);
492 if (node->getType().hiddenMember())
493 error(loc, "member of nameless block was not redeclared", string->c_str(), "");
495 // Not a member of an anonymous container.
497 // The symbol table search was done in the lexical phase.
498 // See if it was a variable.
499 variable = symbol ? symbol->getAsVariable() : nullptr;
501 if (variable->getType().isUnusableName()) {
502 error(loc, "cannot be used (maybe an instance name is needed)", string->c_str(), "");
506 if (language == EShLangMesh && variable) {
507 TLayoutGeometry primitiveType = intermediate.getOutputPrimitive();
508 if ((variable->getMangledName() == "gl_PrimitiveTriangleIndicesEXT" && primitiveType != ElgTriangles) ||
509 (variable->getMangledName() == "gl_PrimitiveLineIndicesEXT" && primitiveType != ElgLines) ||
510 (variable->getMangledName() == "gl_PrimitivePointIndicesEXT" && primitiveType != ElgPoints)) {
511 error(loc, "cannot be used (ouput primitive type mismatch)", string->c_str(), "");
517 error(loc, "variable name expected", string->c_str(), "");
520 // Recovery, if it wasn't found or was not a variable.
522 variable = new TVariable(string, TType(EbtVoid));
524 if (variable->getType().getQualifier().isFrontEndConstant())
525 node = intermediate.addConstantUnion(variable->getConstArray(), variable->getType(), loc);
527 node = intermediate.addSymbol(*variable, loc);
530 if (variable->getType().getQualifier().isIo())
531 intermediate.addIoAccessed(*string);
533 if (variable->getType().isReference() &&
534 variable->getType().getQualifier().bufferReferenceNeedsVulkanMemoryModel()) {
535 intermediate.setUseVulkanMemoryModel();
542 // Handle seeing a base[index] dereference in the grammar.
544 TIntermTyped* TParseContext::handleBracketDereference(const TSourceLoc& loc, TIntermTyped* base, TIntermTyped* index)
547 if (index->getQualifier().isFrontEndConstant())
548 indexValue = index->getAsConstantUnion()->getConstArray()[0].getIConst();
550 // basic type checks...
553 if (! base->isArray() && ! base->isMatrix() && ! base->isVector() && ! base->getType().isCoopMat() &&
554 ! base->isReference()) {
555 if (base->getAsSymbolNode())
556 error(loc, " left of '[' is not of type array, matrix, or vector ", base->getAsSymbolNode()->getName().c_str(), "");
558 error(loc, " left of '[' is not of type array, matrix, or vector ", "expression", "");
560 // Insert dummy error-recovery result
561 return intermediate.addConstantUnion(0.0, EbtFloat, loc);
564 if (!base->isArray() && base->isVector()) {
565 if (base->getType().contains16BitFloat())
566 requireFloat16Arithmetic(loc, "[", "does not operate on types containing float16");
567 if (base->getType().contains16BitInt())
568 requireInt16Arithmetic(loc, "[", "does not operate on types containing (u)int16");
569 if (base->getType().contains8BitInt())
570 requireInt8Arithmetic(loc, "[", "does not operate on types containing (u)int8");
573 // check for constant folding
574 if (base->getType().getQualifier().isFrontEndConstant() && index->getQualifier().isFrontEndConstant()) {
575 // both base and index are front-end constants
576 checkIndex(loc, base->getType(), indexValue);
577 return intermediate.foldDereference(base, indexValue, loc);
580 // at least one of base and index is not a front-end constant variable...
581 TIntermTyped* result = nullptr;
584 if (base->isReference() && ! base->isArray()) {
585 requireExtensions(loc, 1, &E_GL_EXT_buffer_reference2, "buffer reference indexing");
586 if (base->getType().getReferentType()->containsUnsizedArray()) {
587 error(loc, "cannot index reference to buffer containing an unsized array", "", "");
590 result = intermediate.addBinaryMath(EOpAdd, base, index, loc);
591 if (result != nullptr)
592 result->setType(base->getType());
594 if (result == nullptr) {
595 error(loc, "cannot index buffer reference", "", "");
596 result = intermediate.addConstantUnion(0.0, EbtFloat, loc);
600 if (base->getAsSymbolNode() && isIoResizeArray(base->getType()))
601 handleIoResizeArrayAccess(loc, base);
604 if (index->getQualifier().isFrontEndConstant())
605 checkIndex(loc, base->getType(), indexValue);
607 if (index->getQualifier().isFrontEndConstant()) {
609 if (base->getType().isUnsizedArray()) {
610 base->getWritableType().updateImplicitArraySize(indexValue + 1);
611 // For 2D per-view builtin arrays, update the inner dimension size in parent type
612 if (base->getQualifier().isPerView() && base->getQualifier().builtIn != EbvNone) {
613 TIntermBinary* binaryNode = base->getAsBinaryNode();
615 TType& leftType = binaryNode->getLeft()->getWritableType();
616 TArraySizes& arraySizes = *leftType.getArraySizes();
617 assert(arraySizes.getNumDims() == 2);
618 arraySizes.setDimSize(1, std::max(arraySizes.getDimSize(1), indexValue + 1));
623 checkIndex(loc, base->getType(), indexValue);
624 result = intermediate.addIndex(EOpIndexDirect, base, index, loc);
627 if (base->getType().isUnsizedArray()) {
628 // we have a variable index into an unsized array, which is okay,
629 // depending on the situation
630 if (base->getAsSymbolNode() && isIoResizeArray(base->getType()))
631 error(loc, "", "[", "array must be sized by a redeclaration or layout qualifier before being indexed with a variable");
633 // it is okay for a run-time sized array
634 checkRuntimeSizable(loc, *base);
636 base->getWritableType().setArrayVariablyIndexed();
639 if (base->getBasicType() == EbtBlock) {
640 if (base->getQualifier().storage == EvqBuffer)
641 requireProfile(base->getLoc(), ~EEsProfile, "variable indexing buffer block array");
642 else if (base->getQualifier().storage == EvqUniform)
643 profileRequires(base->getLoc(), EEsProfile, 320, Num_AEP_gpu_shader5, AEP_gpu_shader5,
644 "variable indexing uniform block array");
646 // input/output blocks either don't exist or can't be variably indexed
648 } else if (language == EShLangFragment && base->getQualifier().isPipeOutput())
649 requireProfile(base->getLoc(), ~EEsProfile, "variable indexing fragment shader output array");
650 else if (base->getBasicType() == EbtSampler && version >= 130) {
651 const char* explanation = "variable indexing sampler array";
652 requireProfile(base->getLoc(), EEsProfile | ECoreProfile | ECompatibilityProfile, explanation);
653 profileRequires(base->getLoc(), EEsProfile, 320, Num_AEP_gpu_shader5, AEP_gpu_shader5, explanation);
654 profileRequires(base->getLoc(), ECoreProfile | ECompatibilityProfile, 400, nullptr, explanation);
657 result = intermediate.addIndex(EOpIndexIndirect, base, index, loc);
660 // Insert valid dereferenced result type
661 TType newType(base->getType(), 0);
662 if (base->getType().getQualifier().isConstant() && index->getQualifier().isConstant()) {
663 newType.getQualifier().storage = EvqConst;
664 // If base or index is a specialization constant, the result should also be a specialization constant.
665 if (base->getType().getQualifier().isSpecConstant() || index->getQualifier().isSpecConstant()) {
666 newType.getQualifier().makeSpecConstant();
669 newType.getQualifier().storage = EvqTemporary;
670 newType.getQualifier().specConstant = false;
672 result->setType(newType);
675 inheritMemoryQualifiers(base->getQualifier(), result->getWritableType().getQualifier());
677 // Propagate nonuniform
678 if (base->getQualifier().isNonUniform() || index->getQualifier().isNonUniform())
679 result->getWritableType().getQualifier().nonUniform = true;
682 handleIndexLimits(loc, base, index);
690 // for ES 2.0 (version 100) limitations for almost all index operations except vertex-shader uniforms
691 void TParseContext::handleIndexLimits(const TSourceLoc& /*loc*/, TIntermTyped* base, TIntermTyped* index)
693 if ((! limits.generalSamplerIndexing && base->getBasicType() == EbtSampler) ||
694 (! limits.generalUniformIndexing && base->getQualifier().isUniformOrBuffer() && language != EShLangVertex) ||
695 (! limits.generalAttributeMatrixVectorIndexing && base->getQualifier().isPipeInput() && language == EShLangVertex && (base->getType().isMatrix() || base->getType().isVector())) ||
696 (! limits.generalConstantMatrixVectorIndexing && base->getAsConstantUnion()) ||
697 (! limits.generalVariableIndexing && ! base->getType().getQualifier().isUniformOrBuffer() &&
698 ! base->getType().getQualifier().isPipeInput() &&
699 ! base->getType().getQualifier().isPipeOutput() &&
700 ! base->getType().getQualifier().isConstant()) ||
701 (! limits.generalVaryingIndexing && (base->getType().getQualifier().isPipeInput() ||
702 base->getType().getQualifier().isPipeOutput()))) {
703 // it's too early to know what the inductive variables are, save it for post processing
704 needsIndexLimitationChecking.push_back(index);
708 // Make a shared symbol have a non-shared version that can be edited by the current
709 // compile, such that editing its type will not change the shared version and will
710 // effect all nodes sharing it.
711 void TParseContext::makeEditable(TSymbol*& symbol)
713 TParseContextBase::makeEditable(symbol);
715 // See if it's tied to IO resizing
716 if (isIoResizeArray(symbol->getType()))
717 ioArraySymbolResizeList.push_back(symbol);
720 // Return true if this is a geometry shader input array or tessellation control output array
721 // or mesh shader output array.
722 bool TParseContext::isIoResizeArray(const TType& type) const
724 return type.isArray() &&
725 ((language == EShLangGeometry && type.getQualifier().storage == EvqVaryingIn) ||
726 (language == EShLangTessControl && type.getQualifier().storage == EvqVaryingOut &&
727 ! type.getQualifier().patch) ||
728 (language == EShLangFragment && type.getQualifier().storage == EvqVaryingIn &&
729 (type.getQualifier().pervertexNV || type.getQualifier().pervertexEXT)) ||
730 (language == EShLangMesh && type.getQualifier().storage == EvqVaryingOut &&
731 !type.getQualifier().perTaskNV));
734 // If an array is not isIoResizeArray() but is an io array, make sure it has the right size
735 void TParseContext::fixIoArraySize(const TSourceLoc& loc, TType& type)
737 if (! type.isArray() || type.getQualifier().patch || symbolTable.atBuiltInLevel())
740 assert(! isIoResizeArray(type));
742 if (type.getQualifier().storage != EvqVaryingIn || type.getQualifier().patch)
745 if (language == EShLangTessControl || language == EShLangTessEvaluation) {
746 if (type.getOuterArraySize() != resources.maxPatchVertices) {
747 if (type.isSizedArray())
748 error(loc, "tessellation input array size must be gl_MaxPatchVertices or implicitly sized", "[]", "");
749 type.changeOuterArraySize(resources.maxPatchVertices);
754 // Issue any errors if the non-array object is missing arrayness WRT
755 // shader I/O that has array requirements.
756 // All arrayness checking is handled in array paths, this is for
757 void TParseContext::ioArrayCheck(const TSourceLoc& loc, const TType& type, const TString& identifier)
759 if (! type.isArray() && ! symbolTable.atBuiltInLevel()) {
760 if (type.getQualifier().isArrayedIo(language) && !type.getQualifier().layoutPassthrough)
761 error(loc, "type must be an array:", type.getStorageQualifierString(), identifier.c_str());
765 // Handle a dereference of a geometry shader input array or tessellation control output array.
766 // See ioArraySymbolResizeList comment in ParseHelper.h.
768 void TParseContext::handleIoResizeArrayAccess(const TSourceLoc& /*loc*/, TIntermTyped* base)
770 TIntermSymbol* symbolNode = base->getAsSymbolNode();
775 // fix array size, if it can be fixed and needs to be fixed (will allow variable indexing)
776 if (symbolNode->getType().isUnsizedArray()) {
777 int newSize = getIoArrayImplicitSize(symbolNode->getType().getQualifier());
779 symbolNode->getWritableType().changeOuterArraySize(newSize);
783 // If there has been an input primitive declaration (geometry shader) or an output
784 // number of vertices declaration(tessellation shader), make sure all input array types
785 // match it in size. Types come either from nodes in the AST or symbols in the
788 // Types without an array size will be given one.
789 // Types already having a size that is wrong will get an error.
791 void TParseContext::checkIoArraysConsistency(const TSourceLoc &loc, bool tailOnly)
793 int requiredSize = 0;
794 TString featureString;
795 size_t listSize = ioArraySymbolResizeList.size();
798 // If tailOnly = true, only check the last array symbol in the list.
802 for (bool firstIteration = true; i < listSize; ++i) {
803 TType &type = ioArraySymbolResizeList[i]->getWritableType();
805 // As I/O array sizes don't change, fetch requiredSize only once,
806 // except for mesh shaders which could have different I/O array sizes based on type qualifiers.
807 if (firstIteration || (language == EShLangMesh)) {
808 requiredSize = getIoArrayImplicitSize(type.getQualifier(), &featureString);
809 if (requiredSize == 0)
811 firstIteration = false;
814 checkIoArrayConsistency(loc, requiredSize, featureString.c_str(), type,
815 ioArraySymbolResizeList[i]->getName());
819 int TParseContext::getIoArrayImplicitSize(const TQualifier &qualifier, TString *featureString) const
821 int expectedSize = 0;
822 TString str = "unknown";
823 unsigned int maxVertices = intermediate.getVertices() != TQualifier::layoutNotSet ? intermediate.getVertices() : 0;
825 if (language == EShLangGeometry) {
826 expectedSize = TQualifier::mapGeometryToSize(intermediate.getInputPrimitive());
827 str = TQualifier::getGeometryString(intermediate.getInputPrimitive());
829 else if (language == EShLangTessControl) {
830 expectedSize = maxVertices;
832 } else if (language == EShLangFragment) {
833 // Number of vertices for Fragment shader is always three.
836 } else if (language == EShLangMesh) {
837 unsigned int maxPrimitives =
838 intermediate.getPrimitives() != TQualifier::layoutNotSet ? intermediate.getPrimitives() : 0;
839 if (qualifier.builtIn == EbvPrimitiveIndicesNV || qualifier.builtIn == EbvPrimitiveTriangleIndicesEXT ||
840 qualifier.builtIn == EbvPrimitiveLineIndicesEXT || qualifier.builtIn == EbvPrimitivePointIndicesEXT) {
841 expectedSize = maxPrimitives * TQualifier::mapGeometryToSize(intermediate.getOutputPrimitive());
842 str = "max_primitives*";
843 str += TQualifier::getGeometryString(intermediate.getOutputPrimitive());
845 else if (qualifier.isPerPrimitive()) {
846 expectedSize = maxPrimitives;
847 str = "max_primitives";
850 expectedSize = maxVertices;
851 str = "max_vertices";
855 *featureString = str;
859 void TParseContext::checkIoArrayConsistency(const TSourceLoc& loc, int requiredSize, const char* feature, TType& type, const TString& name)
861 if (type.isUnsizedArray())
862 type.changeOuterArraySize(requiredSize);
863 else if (type.getOuterArraySize() != requiredSize) {
864 if (language == EShLangGeometry)
865 error(loc, "inconsistent input primitive for array size of", feature, name.c_str());
866 else if (language == EShLangTessControl)
867 error(loc, "inconsistent output number of vertices for array size of", feature, name.c_str());
868 else if (language == EShLangFragment) {
869 if (type.getOuterArraySize() > requiredSize)
870 error(loc, " cannot be greater than 3 for pervertexEXT", feature, name.c_str());
872 else if (language == EShLangMesh)
873 error(loc, "inconsistent output array size of", feature, name.c_str());
879 #endif // GLSLANG_WEB
881 // Handle seeing a binary node with a math operation.
882 // Returns nullptr if not semantically allowed.
883 TIntermTyped* TParseContext::handleBinaryMath(const TSourceLoc& loc, const char* str, TOperator op, TIntermTyped* left, TIntermTyped* right)
885 rValueErrorCheck(loc, str, left->getAsTyped());
886 rValueErrorCheck(loc, str, right->getAsTyped());
890 // TODO: Bring more source language-specific checks up from intermediate.cpp
891 // to the specific parse helpers for that source language.
894 case EOpLessThanEqual:
895 case EOpGreaterThanEqual:
896 if (! left->isScalar() || ! right->isScalar())
903 if (((left->getType().contains16BitFloat() || right->getType().contains16BitFloat()) && !float16Arithmetic()) ||
904 ((left->getType().contains16BitInt() || right->getType().contains16BitInt()) && !int16Arithmetic()) ||
905 ((left->getType().contains8BitInt() || right->getType().contains8BitInt()) && !int8Arithmetic())) {
909 TIntermTyped* result = nullptr;
911 if ((left->isReference() || right->isReference()))
912 requireExtensions(loc, 1, &E_GL_EXT_buffer_reference2, "buffer reference math");
913 result = intermediate.addBinaryMath(op, left, right, loc);
916 if (result == nullptr) {
917 bool enhanced = intermediate.getEnhancedMsgs();
918 binaryOpError(loc, str, left->getCompleteString(enhanced), right->getCompleteString(enhanced));
924 // Handle seeing a unary node with a math operation.
925 TIntermTyped* TParseContext::handleUnaryMath(const TSourceLoc& loc, const char* str, TOperator op, TIntermTyped* childNode)
927 rValueErrorCheck(loc, str, childNode);
930 if ((childNode->getType().contains16BitFloat() && !float16Arithmetic()) ||
931 (childNode->getType().contains16BitInt() && !int16Arithmetic()) ||
932 (childNode->getType().contains8BitInt() && !int8Arithmetic())) {
936 TIntermTyped* result = nullptr;
938 result = intermediate.addUnaryMath(op, childNode, loc);
943 bool enhanced = intermediate.getEnhancedMsgs();
944 unaryOpError(loc, str, childNode->getCompleteString(enhanced));
951 // Handle seeing a base.field dereference in the grammar.
953 TIntermTyped* TParseContext::handleDotDereference(const TSourceLoc& loc, TIntermTyped* base, const TString& field)
958 // .length() can't be resolved until we later see the function-calling syntax.
959 // Save away the name in the AST for now. Processing is completed in
960 // handleLengthMethod().
962 if (field == "length") {
963 if (base->isArray()) {
964 profileRequires(loc, ENoProfile, 120, E_GL_3DL_array_objects, ".length");
965 profileRequires(loc, EEsProfile, 300, nullptr, ".length");
966 } else if (base->isVector() || base->isMatrix()) {
967 const char* feature = ".length() on vectors and matrices";
968 requireProfile(loc, ~EEsProfile, feature);
969 profileRequires(loc, ~EEsProfile, 420, E_GL_ARB_shading_language_420pack, feature);
970 } else if (!base->getType().isCoopMat()) {
971 bool enhanced = intermediate.getEnhancedMsgs();
972 error(loc, "does not operate on this type:", field.c_str(), base->getType().getCompleteString(enhanced).c_str());
976 return intermediate.addMethod(base, TType(EbtInt), &field, loc);
979 // It's not .length() if we get to here.
981 if (base->isArray()) {
982 error(loc, "cannot apply to an array:", ".", field.c_str());
987 if (base->getType().isCoopMat()) {
988 error(loc, "cannot apply to a cooperative matrix type:", ".", field.c_str());
992 // It's neither an array nor .length() if we get here,
993 // leaving swizzles and struct/block dereferences.
995 TIntermTyped* result = base;
996 if ((base->isVector() || base->isScalar()) &&
997 (base->isFloatingDomain() || base->isIntegerDomain() || base->getBasicType() == EbtBool)) {
998 result = handleDotSwizzle(loc, base, field);
999 } else if (base->isStruct() || base->isReference()) {
1000 const TTypeList* fields = base->isReference() ?
1001 base->getType().getReferentType()->getStruct() :
1002 base->getType().getStruct();
1003 bool fieldFound = false;
1005 for (member = 0; member < (int)fields->size(); ++member) {
1006 if ((*fields)[member].type->getFieldName() == field) {
1012 if (base->getType().getQualifier().isFrontEndConstant())
1013 result = intermediate.foldDereference(base, member, loc);
1015 blockMemberExtensionCheck(loc, base, member, field);
1016 TIntermTyped* index = intermediate.addConstantUnion(member, loc);
1017 result = intermediate.addIndex(EOpIndexDirectStruct, base, index, loc);
1018 result->setType(*(*fields)[member].type);
1019 if ((*fields)[member].type->getQualifier().isIo())
1020 intermediate.addIoAccessed(field);
1022 inheritMemoryQualifiers(base->getQualifier(), result->getWritableType().getQualifier());
1024 auto baseSymbol = base;
1025 while (baseSymbol->getAsSymbolNode() == nullptr)
1026 baseSymbol = baseSymbol->getAsBinaryNode()->getLeft();
1028 structName.append("\'").append(baseSymbol->getAsSymbolNode()->getName().c_str()).append( "\'");
1029 error(loc, "no such field in structure", field.c_str(), structName.c_str());
1032 error(loc, "does not apply to this type:", field.c_str(), base->getType().getCompleteString(intermediate.getEnhancedMsgs()).c_str());
1034 // Propagate noContraction up the dereference chain
1035 if (base->getQualifier().isNoContraction())
1036 result->getWritableType().getQualifier().setNoContraction();
1038 // Propagate nonuniform
1039 if (base->getQualifier().isNonUniform())
1040 result->getWritableType().getQualifier().nonUniform = true;
1046 // Handle seeing a base.swizzle, a subset of base.identifier in the grammar.
1048 TIntermTyped* TParseContext::handleDotSwizzle(const TSourceLoc& loc, TIntermTyped* base, const TString& field)
1050 TIntermTyped* result = base;
1051 if (base->isScalar()) {
1052 const char* dotFeature = "scalar swizzle";
1053 requireProfile(loc, ~EEsProfile, dotFeature);
1054 profileRequires(loc, ~EEsProfile, 420, E_GL_ARB_shading_language_420pack, dotFeature);
1057 TSwizzleSelectors<TVectorSelector> selectors;
1058 parseSwizzleSelector(loc, field, base->getVectorSize(), selectors);
1060 if (base->isVector() && selectors.size() != 1 && base->getType().contains16BitFloat())
1061 requireFloat16Arithmetic(loc, ".", "can't swizzle types containing float16");
1062 if (base->isVector() && selectors.size() != 1 && base->getType().contains16BitInt())
1063 requireInt16Arithmetic(loc, ".", "can't swizzle types containing (u)int16");
1064 if (base->isVector() && selectors.size() != 1 && base->getType().contains8BitInt())
1065 requireInt8Arithmetic(loc, ".", "can't swizzle types containing (u)int8");
1067 if (base->isScalar()) {
1068 if (selectors.size() == 1)
1071 TType type(base->getBasicType(), EvqTemporary, selectors.size());
1072 // Swizzle operations propagate specialization-constantness
1073 if (base->getQualifier().isSpecConstant())
1074 type.getQualifier().makeSpecConstant();
1075 return addConstructor(loc, base, type);
1079 if (base->getType().getQualifier().isFrontEndConstant())
1080 result = intermediate.foldSwizzle(base, selectors, loc);
1082 if (selectors.size() == 1) {
1083 TIntermTyped* index = intermediate.addConstantUnion(selectors[0], loc);
1084 result = intermediate.addIndex(EOpIndexDirect, base, index, loc);
1085 result->setType(TType(base->getBasicType(), EvqTemporary, base->getType().getQualifier().precision));
1087 TIntermTyped* index = intermediate.addSwizzle(selectors, loc);
1088 result = intermediate.addIndex(EOpVectorSwizzle, base, index, loc);
1089 result->setType(TType(base->getBasicType(), EvqTemporary, base->getType().getQualifier().precision, selectors.size()));
1091 // Swizzle operations propagate specialization-constantness
1092 if (base->getType().getQualifier().isSpecConstant())
1093 result->getWritableType().getQualifier().makeSpecConstant();
1099 void TParseContext::blockMemberExtensionCheck(const TSourceLoc& loc, const TIntermTyped* base, int member, const TString& memberName)
1101 // a block that needs extension checking is either 'base', or if arrayed,
1102 // one level removed to the left
1103 const TIntermSymbol* baseSymbol = nullptr;
1104 if (base->getAsBinaryNode() == nullptr)
1105 baseSymbol = base->getAsSymbolNode();
1107 baseSymbol = base->getAsBinaryNode()->getLeft()->getAsSymbolNode();
1108 if (baseSymbol == nullptr)
1110 const TSymbol* symbol = symbolTable.find(baseSymbol->getName());
1111 if (symbol == nullptr)
1113 const TVariable* variable = symbol->getAsVariable();
1114 if (variable == nullptr)
1116 if (!variable->hasMemberExtensions())
1119 // We now have a variable that is the base of a dot reference
1120 // with members that need extension checking.
1121 if (variable->getNumMemberExtensions(member) > 0)
1122 requireExtensions(loc, variable->getNumMemberExtensions(member), variable->getMemberExtensions(member), memberName.c_str());
1126 // Handle seeing a function declarator in the grammar. This is the precursor
1127 // to recognizing a function prototype or function definition.
1129 TFunction* TParseContext::handleFunctionDeclarator(const TSourceLoc& loc, TFunction& function, bool prototype)
1131 // ES can't declare prototypes inside functions
1132 if (! symbolTable.atGlobalLevel())
1133 requireProfile(loc, ~EEsProfile, "local function declaration");
1136 // Multiple declarations of the same function name are allowed.
1138 // If this is a definition, the definition production code will check for redefinitions
1139 // (we don't know at this point if it's a definition or not).
1141 // Redeclarations (full signature match) are allowed. But, return types and parameter qualifiers must also match.
1142 // - except ES 100, which only allows a single prototype
1144 // ES 100 does not allow redefining, but does allow overloading of built-in functions.
1145 // ES 300 does not allow redefining or overloading of built-in functions.
1148 TSymbol* symbol = symbolTable.find(function.getMangledName(), &builtIn);
1149 if (symbol && symbol->getAsFunction() && builtIn)
1150 requireProfile(loc, ~EEsProfile, "redefinition of built-in function");
1152 // Check the validity of using spirv_literal qualifier
1153 for (int i = 0; i < function.getParamCount(); ++i) {
1154 if (function[i].type->getQualifier().isSpirvLiteral() && function.getBuiltInOp() != EOpSpirvInst)
1155 error(loc, "'spirv_literal' can only be used on functions defined with 'spirv_instruction' for argument",
1156 function.getName().c_str(), "%d", i + 1);
1159 // For function declaration with SPIR-V instruction qualifier, always ignore the built-in function and
1160 // respect this redeclared one.
1161 if (symbol && builtIn && function.getBuiltInOp() == EOpSpirvInst)
1164 const TFunction* prevDec = symbol ? symbol->getAsFunction() : 0;
1166 if (prevDec->isPrototyped() && prototype)
1167 profileRequires(loc, EEsProfile, 300, nullptr, "multiple prototypes for same function");
1168 if (prevDec->getType() != function.getType())
1169 error(loc, "overloaded functions must have the same return type", function.getName().c_str(), "");
1171 if (prevDec->getSpirvInstruction() != function.getSpirvInstruction()) {
1172 error(loc, "overloaded functions must have the same qualifiers", function.getName().c_str(),
1173 "spirv_instruction");
1176 for (int i = 0; i < prevDec->getParamCount(); ++i) {
1177 if ((*prevDec)[i].type->getQualifier().storage != function[i].type->getQualifier().storage)
1178 error(loc, "overloaded functions must have the same parameter storage qualifiers for argument", function[i].type->getStorageQualifierString(), "%d", i+1);
1180 if ((*prevDec)[i].type->getQualifier().precision != function[i].type->getQualifier().precision)
1181 error(loc, "overloaded functions must have the same parameter precision qualifiers for argument", function[i].type->getPrecisionQualifierString(), "%d", i+1);
1185 arrayObjectCheck(loc, function.getType(), "array in function return type");
1188 // All built-in functions are defined, even though they don't have a body.
1189 // Count their prototype as a definition instead.
1190 if (symbolTable.atBuiltInLevel())
1191 function.setDefined();
1193 if (prevDec && ! builtIn)
1194 symbol->getAsFunction()->setPrototyped(); // need a writable one, but like having prevDec as a const
1195 function.setPrototyped();
1199 // This insert won't actually insert it if it's a duplicate signature, but it will still check for
1200 // other forms of name collisions.
1201 if (! symbolTable.insert(function))
1202 error(loc, "function name is redeclaration of existing name", function.getName().c_str(), "");
1205 // If this is a redeclaration, it could also be a definition,
1206 // in which case, we need to use the parameter names from this one, and not the one that's
1207 // being redeclared. So, pass back this declaration, not the one in the symbol table.
1213 // Handle seeing the function prototype in front of a function definition in the grammar.
1214 // The body is handled after this function returns.
1216 TIntermAggregate* TParseContext::handleFunctionDefinition(const TSourceLoc& loc, TFunction& function)
1218 currentCaller = function.getMangledName();
1219 TSymbol* symbol = symbolTable.find(function.getMangledName());
1220 TFunction* prevDec = symbol ? symbol->getAsFunction() : nullptr;
1223 error(loc, "can't find function", function.getName().c_str(), "");
1224 // Note: 'prevDec' could be 'function' if this is the first time we've seen function
1225 // as it would have just been put in the symbol table. Otherwise, we're looking up
1226 // an earlier occurrence.
1228 if (prevDec && prevDec->isDefined()) {
1229 // Then this function already has a body.
1230 error(loc, "function already has a body", function.getName().c_str(), "");
1232 if (prevDec && ! prevDec->isDefined()) {
1233 prevDec->setDefined();
1235 // Remember the return type for later checking for RETURN statements.
1236 currentFunctionType = &(prevDec->getType());
1238 currentFunctionType = new TType(EbtVoid);
1239 functionReturnsValue = false;
1241 // Check for entry point
1242 if (function.getName().compare(intermediate.getEntryPointName().c_str()) == 0) {
1243 intermediate.setEntryPointMangledName(function.getMangledName().c_str());
1244 intermediate.incrementEntryPointCount();
1250 // Raise error message if main function takes any parameters or returns anything other than void
1253 if (function.getParamCount() > 0)
1254 error(loc, "function cannot take any parameter(s)", function.getName().c_str(), "");
1255 if (function.getType().getBasicType() != EbtVoid)
1256 error(loc, "", function.getType().getBasicTypeString().c_str(), "entry point cannot return a value");
1260 // New symbol table scope for body of function plus its arguments
1265 // Insert parameters into the symbol table.
1266 // If the parameter has no name, it's not an error, just don't insert it
1267 // (could be used for unused args).
1269 // Also, accumulate the list of parameters into the HIL, so lower level code
1270 // knows where to find parameters.
1272 TIntermAggregate* paramNodes = new TIntermAggregate;
1273 for (int i = 0; i < function.getParamCount(); i++) {
1274 TParameter& param = function[i];
1275 if (param.name != nullptr) {
1276 TVariable *variable = new TVariable(param.name, *param.type);
1278 // Insert the parameters with name in the symbol table.
1279 if (! symbolTable.insert(*variable))
1280 error(loc, "redefinition", variable->getName().c_str(), "");
1282 // Transfer ownership of name pointer to symbol table.
1283 param.name = nullptr;
1285 // Add the parameter to the HIL
1286 paramNodes = intermediate.growAggregate(paramNodes,
1287 intermediate.addSymbol(*variable, loc),
1291 paramNodes = intermediate.growAggregate(paramNodes, intermediate.addSymbol(*param.type, loc), loc);
1293 intermediate.setAggregateOperator(paramNodes, EOpParameters, TType(EbtVoid), loc);
1294 loopNestingLevel = 0;
1295 statementNestingLevel = 0;
1296 controlFlowNestingLevel = 0;
1297 postEntryPointReturn = false;
1303 // Handle seeing function call syntax in the grammar, which could be any of
1304 // - .length() method
1306 // - a call to a built-in function mapped to an operator
1307 // - a call to a built-in function that will remain a function call (e.g., texturing)
1309 // - subroutine call (not implemented yet)
1311 TIntermTyped* TParseContext::handleFunctionCall(const TSourceLoc& loc, TFunction* function, TIntermNode* arguments)
1313 TIntermTyped* result = nullptr;
1315 if (spvVersion.vulkan != 0 && spvVersion.vulkanRelaxed) {
1316 // allow calls that are invalid in Vulkan Semantics to be invisibily
1317 // remapped to equivalent valid functions
1318 result = vkRelaxedRemapFunctionCall(loc, function, arguments);
1323 if (function->getBuiltInOp() == EOpArrayLength)
1324 result = handleLengthMethod(loc, function, arguments);
1325 else if (function->getBuiltInOp() != EOpNull) {
1327 // Then this should be a constructor.
1328 // Don't go through the symbol table for constructors.
1329 // Their parameters will be verified algorithmically.
1331 TType type(EbtVoid); // use this to get the type back
1332 if (! constructorError(loc, arguments, *function, function->getBuiltInOp(), type)) {
1334 // It's a constructor, of type 'type'.
1336 result = addConstructor(loc, arguments, type);
1337 if (result == nullptr)
1338 error(loc, "cannot construct with these arguments", type.getCompleteString(intermediate.getEnhancedMsgs()).c_str(), "");
1342 // Find it in the symbol table.
1344 const TFunction* fnCandidate;
1345 bool builtIn {false};
1346 fnCandidate = findFunction(loc, *function, builtIn);
1348 // This is a declared function that might map to
1349 // - a built-in operator,
1350 // - a built-in function not mapped to an operator, or
1351 // - a user function.
1353 // Error check for a function requiring specific extensions present.
1354 if (builtIn && fnCandidate->getNumExtensions())
1355 requireExtensions(loc, fnCandidate->getNumExtensions(), fnCandidate->getExtensions(), fnCandidate->getName().c_str());
1357 if (builtIn && fnCandidate->getType().contains16BitFloat())
1358 requireFloat16Arithmetic(loc, "built-in function", "float16 types can only be in uniform block or buffer storage");
1359 if (builtIn && fnCandidate->getType().contains16BitInt())
1360 requireInt16Arithmetic(loc, "built-in function", "(u)int16 types can only be in uniform block or buffer storage");
1361 if (builtIn && fnCandidate->getType().contains8BitInt())
1362 requireInt8Arithmetic(loc, "built-in function", "(u)int8 types can only be in uniform block or buffer storage");
1364 if (arguments != nullptr) {
1365 // Make sure qualifications work for these arguments.
1366 TIntermAggregate* aggregate = arguments->getAsAggregate();
1367 for (int i = 0; i < fnCandidate->getParamCount(); ++i) {
1368 // At this early point there is a slight ambiguity between whether an aggregate 'arguments'
1369 // is the single argument itself or its children are the arguments. Only one argument
1370 // means take 'arguments' itself as the one argument.
1371 TIntermNode* arg = fnCandidate->getParamCount() == 1 ? arguments : (aggregate ? aggregate->getSequence()[i] : arguments);
1372 TQualifier& formalQualifier = (*fnCandidate)[i].type->getQualifier();
1373 if (formalQualifier.isParamOutput()) {
1374 if (lValueErrorCheck(arguments->getLoc(), "assign", arg->getAsTyped()))
1375 error(arguments->getLoc(), "Non-L-value cannot be passed for 'out' or 'inout' parameters.", "out", "");
1378 if (formalQualifier.isSpirvLiteral()) {
1379 if (!arg->getAsTyped()->getQualifier().isFrontEndConstant()) {
1380 error(arguments->getLoc(),
1381 "Non front-end constant expressions cannot be passed for 'spirv_literal' parameters.",
1382 "spirv_literal", "");
1386 const TType& argType = arg->getAsTyped()->getType();
1387 const TQualifier& argQualifier = argType.getQualifier();
1388 if (argQualifier.isMemory() && (argType.containsOpaque() || argType.isReference())) {
1389 const char* message = "argument cannot drop memory qualifier when passed to formal parameter";
1391 if (argQualifier.volatil && ! formalQualifier.volatil)
1392 error(arguments->getLoc(), message, "volatile", "");
1393 if (argQualifier.coherent && ! (formalQualifier.devicecoherent || formalQualifier.coherent))
1394 error(arguments->getLoc(), message, "coherent", "");
1395 if (argQualifier.devicecoherent && ! (formalQualifier.devicecoherent || formalQualifier.coherent))
1396 error(arguments->getLoc(), message, "devicecoherent", "");
1397 if (argQualifier.queuefamilycoherent && ! (formalQualifier.queuefamilycoherent || formalQualifier.devicecoherent || formalQualifier.coherent))
1398 error(arguments->getLoc(), message, "queuefamilycoherent", "");
1399 if (argQualifier.workgroupcoherent && ! (formalQualifier.workgroupcoherent || formalQualifier.queuefamilycoherent || formalQualifier.devicecoherent || formalQualifier.coherent))
1400 error(arguments->getLoc(), message, "workgroupcoherent", "");
1401 if (argQualifier.subgroupcoherent && ! (formalQualifier.subgroupcoherent || formalQualifier.workgroupcoherent || formalQualifier.queuefamilycoherent || formalQualifier.devicecoherent || formalQualifier.coherent))
1402 error(arguments->getLoc(), message, "subgroupcoherent", "");
1403 if (argQualifier.readonly && ! formalQualifier.readonly)
1404 error(arguments->getLoc(), message, "readonly", "");
1405 if (argQualifier.writeonly && ! formalQualifier.writeonly)
1406 error(arguments->getLoc(), message, "writeonly", "");
1407 // Don't check 'restrict', it is different than the rest:
1408 // "...but only restrict can be taken away from a calling argument, by a formal parameter that
1409 // lacks the restrict qualifier..."
1412 if (!builtIn && argQualifier.getFormat() != formalQualifier.getFormat()) {
1413 // we have mismatched formats, which should only be allowed if writeonly
1414 // and at least one format is unknown
1415 if (!formalQualifier.isWriteOnly() || (formalQualifier.getFormat() != ElfNone &&
1416 argQualifier.getFormat() != ElfNone))
1417 error(arguments->getLoc(), "image formats must match", "format", "");
1419 if (builtIn && arg->getAsTyped()->getType().contains16BitFloat())
1420 requireFloat16Arithmetic(arguments->getLoc(), "built-in function", "float16 types can only be in uniform block or buffer storage");
1421 if (builtIn && arg->getAsTyped()->getType().contains16BitInt())
1422 requireInt16Arithmetic(arguments->getLoc(), "built-in function", "(u)int16 types can only be in uniform block or buffer storage");
1423 if (builtIn && arg->getAsTyped()->getType().contains8BitInt())
1424 requireInt8Arithmetic(arguments->getLoc(), "built-in function", "(u)int8 types can only be in uniform block or buffer storage");
1426 // TODO 4.5 functionality: A shader will fail to compile
1427 // if the value passed to the memargument of an atomic memory function does not correspond to a buffer or
1428 // shared variable. It is acceptable to pass an element of an array or a single component of a vector to the
1429 // memargument of an atomic memory function, as long as the underlying array or vector is a buffer or
1433 // Convert 'in' arguments
1434 addInputArgumentConversions(*fnCandidate, arguments); // arguments may be modified if it's just a single argument node
1437 if (builtIn && fnCandidate->getBuiltInOp() != EOpNull) {
1438 // A function call mapped to a built-in operation.
1439 result = handleBuiltInFunctionCall(loc, arguments, *fnCandidate);
1441 } else if (fnCandidate->getBuiltInOp() == EOpSpirvInst) {
1442 // When SPIR-V instruction qualifier is specified, the function call is still mapped to a built-in operation.
1443 result = handleBuiltInFunctionCall(loc, arguments, *fnCandidate);
1446 // This is a function call not mapped to built-in operator.
1447 // It could still be a built-in function, but only if PureOperatorBuiltins == false.
1448 result = intermediate.setAggregateOperator(arguments, EOpFunctionCall, fnCandidate->getType(), loc);
1449 TIntermAggregate* call = result->getAsAggregate();
1450 call->setName(fnCandidate->getMangledName());
1452 // this is how we know whether the given function is a built-in function or a user-defined function
1453 // if builtIn == false, it's a userDefined -> could be an overloaded built-in function also
1454 // if builtIn == true, it's definitely a built-in function with EOpNull
1456 call->setUserDefined();
1457 if (symbolTable.atGlobalLevel()) {
1458 requireProfile(loc, ~EEsProfile, "calling user function from global scope");
1459 intermediate.addToCallGraph(infoSink, "main(", fnCandidate->getMangledName());
1461 intermediate.addToCallGraph(infoSink, currentCaller, fnCandidate->getMangledName());
1466 nonOpBuiltInCheck(loc, *fnCandidate, *call);
1469 userFunctionCallCheck(loc, *call);
1472 // Convert 'out' arguments. If it was a constant folded built-in, it won't be an aggregate anymore.
1473 // Built-ins with a single argument aren't called with an aggregate, but they also don't have an output.
1474 // Also, build the qualifier list for user function calls, which are always called with an aggregate.
1475 if (result->getAsAggregate()) {
1476 TQualifierList& qualifierList = result->getAsAggregate()->getQualifierList();
1477 for (int i = 0; i < fnCandidate->getParamCount(); ++i) {
1478 TStorageQualifier qual = (*fnCandidate)[i].type->getQualifier().storage;
1479 qualifierList.push_back(qual);
1481 result = addOutputArgumentConversions(*fnCandidate, *result->getAsAggregate());
1484 if (result->getAsTyped()->getType().isCoopMat() &&
1485 !result->getAsTyped()->getType().isParameterized()) {
1486 assert(fnCandidate->getBuiltInOp() == EOpCooperativeMatrixMulAdd);
1488 result->setType(result->getAsAggregate()->getSequence()[2]->getAsTyped()->getType());
1493 // generic error recovery
1494 // TODO: simplification: localize all the error recoveries that look like this, and taking type into account to reduce cascades
1495 if (result == nullptr)
1496 result = intermediate.addConstantUnion(0.0, EbtFloat, loc);
1501 TIntermTyped* TParseContext::handleBuiltInFunctionCall(TSourceLoc loc, TIntermNode* arguments,
1502 const TFunction& function)
1504 checkLocation(loc, function.getBuiltInOp());
1505 TIntermTyped *result = intermediate.addBuiltInFunctionCall(loc, function.getBuiltInOp(),
1506 function.getParamCount() == 1,
1507 arguments, function.getType());
1508 if (result != nullptr && obeyPrecisionQualifiers())
1509 computeBuiltinPrecisions(*result, function);
1511 if (result == nullptr) {
1512 if (arguments == nullptr)
1513 error(loc, " wrong operand type", "Internal Error",
1514 "built in unary operator function. Type: %s", "");
1516 error(arguments->getLoc(), " wrong operand type", "Internal Error",
1517 "built in unary operator function. Type: %s",
1518 static_cast<TIntermTyped*>(arguments)->getCompleteString(intermediate.getEnhancedMsgs()).c_str());
1519 } else if (result->getAsOperator())
1520 builtInOpCheck(loc, function, *result->getAsOperator());
1523 // Special handling for function call with SPIR-V instruction qualifier specified
1524 if (function.getBuiltInOp() == EOpSpirvInst) {
1525 if (auto agg = result->getAsAggregate()) {
1526 // Propogate spirv_by_reference/spirv_literal from parameters to arguments
1527 auto& sequence = agg->getSequence();
1528 for (unsigned i = 0; i < sequence.size(); ++i) {
1529 if (function[i].type->getQualifier().isSpirvByReference())
1530 sequence[i]->getAsTyped()->getQualifier().setSpirvByReference();
1531 if (function[i].type->getQualifier().isSpirvLiteral())
1532 sequence[i]->getAsTyped()->getQualifier().setSpirvLiteral();
1535 // Attach the function call to SPIR-V intruction
1536 agg->setSpirvInstruction(function.getSpirvInstruction());
1537 } else if (auto unaryNode = result->getAsUnaryNode()) {
1538 // Propogate spirv_by_reference/spirv_literal from parameters to arguments
1539 if (function[0].type->getQualifier().isSpirvByReference())
1540 unaryNode->getOperand()->getQualifier().setSpirvByReference();
1541 if (function[0].type->getQualifier().isSpirvLiteral())
1542 unaryNode->getOperand()->getQualifier().setSpirvLiteral();
1544 // Attach the function call to SPIR-V intruction
1545 unaryNode->setSpirvInstruction(function.getSpirvInstruction());
1554 // "The operation of a built-in function can have a different precision
1555 // qualification than the precision qualification of the resulting value.
1556 // These two precision qualifications are established as follows.
1558 // The precision qualification of the operation of a built-in function is
1559 // based on the precision qualification of its input arguments and formal
1560 // parameters: When a formal parameter specifies a precision qualifier,
1561 // that is used, otherwise, the precision qualification of the calling
1562 // argument is used. The highest precision of these will be the precision
1563 // qualification of the operation of the built-in function. Generally,
1564 // this is applied across all arguments to a built-in function, with the
1565 // exceptions being:
1566 // - bitfieldExtract and bitfieldInsert ignore the 'offset' and 'bits'
1568 // - interpolateAt* functions only look at the 'interpolant' argument.
1570 // The precision qualification of the result of a built-in function is
1571 // determined in one of the following ways:
1573 // - For the texture sampling, image load, and image store functions,
1574 // the precision of the return type matches the precision of the
1579 // - For prototypes that do not specify a resulting precision qualifier,
1580 // the precision will be the same as the precision of the operation.
1582 // - For prototypes that do specify a resulting precision qualifier,
1583 // the specified precision qualifier is the precision qualification of
1586 void TParseContext::computeBuiltinPrecisions(TIntermTyped& node, const TFunction& function)
1588 TPrecisionQualifier operationPrecision = EpqNone;
1589 TPrecisionQualifier resultPrecision = EpqNone;
1591 TIntermOperator* opNode = node.getAsOperator();
1592 if (opNode == nullptr)
1595 if (TIntermUnary* unaryNode = node.getAsUnaryNode()) {
1596 operationPrecision = std::max(function[0].type->getQualifier().precision,
1597 unaryNode->getOperand()->getType().getQualifier().precision);
1598 if (function.getType().getBasicType() != EbtBool)
1599 resultPrecision = function.getType().getQualifier().precision == EpqNone ?
1600 operationPrecision :
1601 function.getType().getQualifier().precision;
1602 } else if (TIntermAggregate* agg = node.getAsAggregate()) {
1603 TIntermSequence& sequence = agg->getSequence();
1604 unsigned int numArgs = (unsigned int)sequence.size();
1605 switch (agg->getOp()) {
1606 case EOpBitfieldExtract:
1609 case EOpBitfieldInsert:
1612 case EOpInterpolateAtCentroid:
1613 case EOpInterpolateAtOffset:
1614 case EOpInterpolateAtSample:
1617 case EOpDebugPrintf:
1623 // find the maximum precision from the arguments and parameters
1624 for (unsigned int arg = 0; arg < numArgs; ++arg) {
1625 operationPrecision = std::max(operationPrecision, sequence[arg]->getAsTyped()->getQualifier().precision);
1626 operationPrecision = std::max(operationPrecision, function[arg].type->getQualifier().precision);
1628 // compute the result precision
1629 if (agg->isSampling() ||
1630 agg->getOp() == EOpImageLoad || agg->getOp() == EOpImageStore ||
1631 agg->getOp() == EOpImageLoadLod || agg->getOp() == EOpImageStoreLod)
1632 resultPrecision = sequence[0]->getAsTyped()->getQualifier().precision;
1633 else if (function.getType().getBasicType() != EbtBool)
1634 resultPrecision = function.getType().getQualifier().precision == EpqNone ?
1635 operationPrecision :
1636 function.getType().getQualifier().precision;
1639 // Propagate precision through this node and its children. That algorithm stops
1640 // when a precision is found, so start by clearing this subroot precision
1641 opNode->getQualifier().precision = EpqNone;
1642 if (operationPrecision != EpqNone) {
1643 opNode->propagatePrecision(operationPrecision);
1644 opNode->setOperationPrecision(operationPrecision);
1646 // Now, set the result precision, which might not match
1647 opNode->getQualifier().precision = resultPrecision;
1650 TIntermNode* TParseContext::handleReturnValue(const TSourceLoc& loc, TIntermTyped* value)
1653 storage16BitAssignmentCheck(loc, value->getType(), "return");
1656 functionReturnsValue = true;
1657 TIntermBranch* branch = nullptr;
1658 if (currentFunctionType->getBasicType() == EbtVoid) {
1659 error(loc, "void function cannot return a value", "return", "");
1660 branch = intermediate.addBranch(EOpReturn, loc);
1661 } else if (*currentFunctionType != value->getType()) {
1662 TIntermTyped* converted = intermediate.addConversion(EOpReturn, *currentFunctionType, value);
1664 if (*currentFunctionType != converted->getType())
1665 error(loc, "cannot convert return value to function return type", "return", "");
1667 warn(loc, "type conversion on return values was not explicitly allowed until version 420",
1669 branch = intermediate.addBranch(EOpReturn, converted, loc);
1671 error(loc, "type does not match, or is not convertible to, the function's return type", "return", "");
1672 branch = intermediate.addBranch(EOpReturn, value, loc);
1675 branch = intermediate.addBranch(EOpReturn, value, loc);
1677 branch->updatePrecision(currentFunctionType->getQualifier().precision);
1681 // See if the operation is being done in an illegal location.
1682 void TParseContext::checkLocation(const TSourceLoc& loc, TOperator op)
1687 if (language == EShLangTessControl) {
1688 if (controlFlowNestingLevel > 0)
1689 error(loc, "tessellation control barrier() cannot be placed within flow control", "", "");
1691 error(loc, "tessellation control barrier() must be in main()", "", "");
1692 else if (postEntryPointReturn)
1693 error(loc, "tessellation control barrier() cannot be placed after a return from main()", "", "");
1696 case EOpBeginInvocationInterlock:
1697 if (language != EShLangFragment)
1698 error(loc, "beginInvocationInterlockARB() must be in a fragment shader", "", "");
1700 error(loc, "beginInvocationInterlockARB() must be in main()", "", "");
1701 else if (postEntryPointReturn)
1702 error(loc, "beginInvocationInterlockARB() cannot be placed after a return from main()", "", "");
1703 if (controlFlowNestingLevel > 0)
1704 error(loc, "beginInvocationInterlockARB() cannot be placed within flow control", "", "");
1706 if (beginInvocationInterlockCount > 0)
1707 error(loc, "beginInvocationInterlockARB() must only be called once", "", "");
1708 if (endInvocationInterlockCount > 0)
1709 error(loc, "beginInvocationInterlockARB() must be called before endInvocationInterlockARB()", "", "");
1711 beginInvocationInterlockCount++;
1713 // default to pixel_interlock_ordered
1714 if (intermediate.getInterlockOrdering() == EioNone)
1715 intermediate.setInterlockOrdering(EioPixelInterlockOrdered);
1717 case EOpEndInvocationInterlock:
1718 if (language != EShLangFragment)
1719 error(loc, "endInvocationInterlockARB() must be in a fragment shader", "", "");
1721 error(loc, "endInvocationInterlockARB() must be in main()", "", "");
1722 else if (postEntryPointReturn)
1723 error(loc, "endInvocationInterlockARB() cannot be placed after a return from main()", "", "");
1724 if (controlFlowNestingLevel > 0)
1725 error(loc, "endInvocationInterlockARB() cannot be placed within flow control", "", "");
1727 if (endInvocationInterlockCount > 0)
1728 error(loc, "endInvocationInterlockARB() must only be called once", "", "");
1729 if (beginInvocationInterlockCount == 0)
1730 error(loc, "beginInvocationInterlockARB() must be called before endInvocationInterlockARB()", "", "");
1732 endInvocationInterlockCount++;
1740 // Finish processing object.length(). This started earlier in handleDotDereference(), where
1741 // the ".length" part was recognized and semantically checked, and finished here where the
1742 // function syntax "()" is recognized.
1744 // Return resulting tree node.
1745 TIntermTyped* TParseContext::handleLengthMethod(const TSourceLoc& loc, TFunction* function, TIntermNode* intermNode)
1749 if (function->getParamCount() > 0)
1750 error(loc, "method does not accept any arguments", function->getName().c_str(), "");
1752 const TType& type = intermNode->getAsTyped()->getType();
1753 if (type.isArray()) {
1754 if (type.isUnsizedArray()) {
1756 if (intermNode->getAsSymbolNode() && isIoResizeArray(type)) {
1757 // We could be between a layout declaration that gives a built-in io array implicit size and
1758 // a user redeclaration of that array, meaning we have to substitute its implicit size here
1759 // without actually redeclaring the array. (It is an error to use a member before the
1760 // redeclaration, but not an error to use the array name itself.)
1761 const TString& name = intermNode->getAsSymbolNode()->getName();
1762 if (name == "gl_in" || name == "gl_out" || name == "gl_MeshVerticesNV" ||
1763 name == "gl_MeshPrimitivesNV") {
1764 length = getIoArrayImplicitSize(type.getQualifier());
1770 if (intermNode->getAsSymbolNode() && isIoResizeArray(type))
1771 error(loc, "", function->getName().c_str(), "array must first be sized by a redeclaration or layout qualifier");
1772 else if (isRuntimeLength(*intermNode->getAsTyped())) {
1773 // Create a unary op and let the back end handle it
1774 return intermediate.addBuiltInFunctionCall(loc, EOpArrayLength, true, intermNode, TType(EbtInt));
1777 error(loc, "", function->getName().c_str(), "array must be declared with a size before using this method");
1779 } else if (type.getOuterArrayNode()) {
1780 // If the array's outer size is specified by an intermediate node, it means the array's length
1781 // was specified by a specialization constant. In such a case, we should return the node of the
1782 // specialization constants to represent the length.
1783 return type.getOuterArrayNode();
1785 length = type.getOuterArraySize();
1786 } else if (type.isMatrix())
1787 length = type.getMatrixCols();
1788 else if (type.isVector())
1789 length = type.getVectorSize();
1790 else if (type.isCoopMat())
1791 return intermediate.addBuiltInFunctionCall(loc, EOpArrayLength, true, intermNode, TType(EbtInt));
1793 // we should not get here, because earlier semantic checking should have prevented this path
1794 error(loc, ".length()", "unexpected use of .length()", "");
1801 return intermediate.addConstantUnion(length, loc);
1805 // Add any needed implicit conversions for function-call arguments to input parameters.
1807 void TParseContext::addInputArgumentConversions(const TFunction& function, TIntermNode*& arguments) const
1810 TIntermAggregate* aggregate = arguments->getAsAggregate();
1812 // Process each argument's conversion
1813 for (int i = 0; i < function.getParamCount(); ++i) {
1814 // At this early point there is a slight ambiguity between whether an aggregate 'arguments'
1815 // is the single argument itself or its children are the arguments. Only one argument
1816 // means take 'arguments' itself as the one argument.
1817 TIntermTyped* arg = function.getParamCount() == 1 ? arguments->getAsTyped() : (aggregate ? aggregate->getSequence()[i]->getAsTyped() : arguments->getAsTyped());
1818 if (*function[i].type != arg->getType()) {
1819 if (function[i].type->getQualifier().isParamInput() &&
1820 !function[i].type->isCoopMat()) {
1821 // In-qualified arguments just need an extra node added above the argument to
1822 // convert to the correct type.
1823 arg = intermediate.addConversion(EOpFunctionCall, *function[i].type, arg);
1825 if (function.getParamCount() == 1)
1829 aggregate->getSequence()[i] = arg;
1841 // Add any needed implicit output conversions for function-call arguments. This
1842 // can require a new tree topology, complicated further by whether the function
1843 // has a return value.
1845 // Returns a node of a subtree that evaluates to the return value of the function.
1847 TIntermTyped* TParseContext::addOutputArgumentConversions(const TFunction& function, TIntermAggregate& intermNode) const
1852 TIntermSequence& arguments = intermNode.getSequence();
1854 // Will there be any output conversions?
1855 bool outputConversions = false;
1856 for (int i = 0; i < function.getParamCount(); ++i) {
1857 if (*function[i].type != arguments[i]->getAsTyped()->getType() && function[i].type->getQualifier().isParamOutput()) {
1858 outputConversions = true;
1863 if (! outputConversions)
1866 // Setup for the new tree, if needed:
1868 // Output conversions need a different tree topology.
1869 // Out-qualified arguments need a temporary of the correct type, with the call
1870 // followed by an assignment of the temporary to the original argument:
1871 // void: function(arg, ...) -> ( function(tempArg, ...), arg = tempArg, ...)
1872 // ret = function(arg, ...) -> ret = (tempRet = function(tempArg, ...), arg = tempArg, ..., tempRet)
1873 // Where the "tempArg" type needs no conversion as an argument, but will convert on assignment.
1874 TIntermTyped* conversionTree = nullptr;
1875 TVariable* tempRet = nullptr;
1876 if (intermNode.getBasicType() != EbtVoid) {
1877 // do the "tempRet = function(...), " bit from above
1878 tempRet = makeInternalVariable("tempReturn", intermNode.getType());
1879 TIntermSymbol* tempRetNode = intermediate.addSymbol(*tempRet, intermNode.getLoc());
1880 conversionTree = intermediate.addAssign(EOpAssign, tempRetNode, &intermNode, intermNode.getLoc());
1882 conversionTree = &intermNode;
1884 conversionTree = intermediate.makeAggregate(conversionTree);
1886 // Process each argument's conversion
1887 for (int i = 0; i < function.getParamCount(); ++i) {
1888 if (*function[i].type != arguments[i]->getAsTyped()->getType()) {
1889 if (function[i].type->getQualifier().isParamOutput()) {
1890 // Out-qualified arguments need to use the topology set up above.
1891 // do the " ...(tempArg, ...), arg = tempArg" bit from above
1893 paramType.shallowCopy(*function[i].type);
1894 if (arguments[i]->getAsTyped()->getType().isParameterized() &&
1895 !paramType.isParameterized()) {
1896 paramType.shallowCopy(arguments[i]->getAsTyped()->getType());
1897 paramType.copyTypeParameters(*arguments[i]->getAsTyped()->getType().getTypeParameters());
1899 TVariable* tempArg = makeInternalVariable("tempArg", paramType);
1900 tempArg->getWritableType().getQualifier().makeTemporary();
1901 TIntermSymbol* tempArgNode = intermediate.addSymbol(*tempArg, intermNode.getLoc());
1902 TIntermTyped* tempAssign = intermediate.addAssign(EOpAssign, arguments[i]->getAsTyped(), tempArgNode, arguments[i]->getLoc());
1903 conversionTree = intermediate.growAggregate(conversionTree, tempAssign, arguments[i]->getLoc());
1904 // replace the argument with another node for the same tempArg variable
1905 arguments[i] = intermediate.addSymbol(*tempArg, intermNode.getLoc());
1910 // Finalize the tree topology (see bigger comment above).
1912 // do the "..., tempRet" bit from above
1913 TIntermSymbol* tempRetNode = intermediate.addSymbol(*tempRet, intermNode.getLoc());
1914 conversionTree = intermediate.growAggregate(conversionTree, tempRetNode, intermNode.getLoc());
1916 conversionTree = intermediate.setAggregateOperator(conversionTree, EOpComma, intermNode.getType(), intermNode.getLoc());
1918 return conversionTree;
1922 TIntermTyped* TParseContext::addAssign(const TSourceLoc& loc, TOperator op, TIntermTyped* left, TIntermTyped* right)
1924 if ((op == EOpAddAssign || op == EOpSubAssign) && left->isReference())
1925 requireExtensions(loc, 1, &E_GL_EXT_buffer_reference2, "+= and -= on a buffer reference");
1927 return intermediate.addAssign(op, left, right, loc);
1930 void TParseContext::memorySemanticsCheck(const TSourceLoc& loc, const TFunction& fnCandidate, const TIntermOperator& callNode)
1932 const TIntermSequence* argp = &callNode.getAsAggregate()->getSequence();
1934 //const int gl_SemanticsRelaxed = 0x0;
1935 const int gl_SemanticsAcquire = 0x2;
1936 const int gl_SemanticsRelease = 0x4;
1937 const int gl_SemanticsAcquireRelease = 0x8;
1938 const int gl_SemanticsMakeAvailable = 0x2000;
1939 const int gl_SemanticsMakeVisible = 0x4000;
1940 const int gl_SemanticsVolatile = 0x8000;
1942 //const int gl_StorageSemanticsNone = 0x0;
1943 const int gl_StorageSemanticsBuffer = 0x40;
1944 const int gl_StorageSemanticsShared = 0x100;
1945 const int gl_StorageSemanticsImage = 0x800;
1946 const int gl_StorageSemanticsOutput = 0x1000;
1949 unsigned int semantics = 0, storageClassSemantics = 0;
1950 unsigned int semantics2 = 0, storageClassSemantics2 = 0;
1952 const TIntermTyped* arg0 = (*argp)[0]->getAsTyped();
1953 const bool isMS = arg0->getBasicType() == EbtSampler && arg0->getType().getSampler().isMultiSample();
1955 // Grab the semantics and storage class semantics from the operands, based on opcode
1956 switch (callNode.getOp()) {
1958 case EOpAtomicSubtract:
1964 case EOpAtomicExchange:
1965 case EOpAtomicStore:
1966 storageClassSemantics = (*argp)[3]->getAsConstantUnion()->getConstArray()[0].getIConst();
1967 semantics = (*argp)[4]->getAsConstantUnion()->getConstArray()[0].getIConst();
1970 storageClassSemantics = (*argp)[2]->getAsConstantUnion()->getConstArray()[0].getIConst();
1971 semantics = (*argp)[3]->getAsConstantUnion()->getConstArray()[0].getIConst();
1973 case EOpAtomicCompSwap:
1974 storageClassSemantics = (*argp)[4]->getAsConstantUnion()->getConstArray()[0].getIConst();
1975 semantics = (*argp)[5]->getAsConstantUnion()->getConstArray()[0].getIConst();
1976 storageClassSemantics2 = (*argp)[6]->getAsConstantUnion()->getConstArray()[0].getIConst();
1977 semantics2 = (*argp)[7]->getAsConstantUnion()->getConstArray()[0].getIConst();
1980 case EOpImageAtomicAdd:
1981 case EOpImageAtomicMin:
1982 case EOpImageAtomicMax:
1983 case EOpImageAtomicAnd:
1984 case EOpImageAtomicOr:
1985 case EOpImageAtomicXor:
1986 case EOpImageAtomicExchange:
1987 case EOpImageAtomicStore:
1988 storageClassSemantics = (*argp)[isMS ? 5 : 4]->getAsConstantUnion()->getConstArray()[0].getIConst();
1989 semantics = (*argp)[isMS ? 6 : 5]->getAsConstantUnion()->getConstArray()[0].getIConst();
1991 case EOpImageAtomicLoad:
1992 storageClassSemantics = (*argp)[isMS ? 4 : 3]->getAsConstantUnion()->getConstArray()[0].getIConst();
1993 semantics = (*argp)[isMS ? 5 : 4]->getAsConstantUnion()->getConstArray()[0].getIConst();
1995 case EOpImageAtomicCompSwap:
1996 storageClassSemantics = (*argp)[isMS ? 6 : 5]->getAsConstantUnion()->getConstArray()[0].getIConst();
1997 semantics = (*argp)[isMS ? 7 : 6]->getAsConstantUnion()->getConstArray()[0].getIConst();
1998 storageClassSemantics2 = (*argp)[isMS ? 8 : 7]->getAsConstantUnion()->getConstArray()[0].getIConst();
1999 semantics2 = (*argp)[isMS ? 9 : 8]->getAsConstantUnion()->getConstArray()[0].getIConst();
2003 storageClassSemantics = (*argp)[2]->getAsConstantUnion()->getConstArray()[0].getIConst();
2004 semantics = (*argp)[3]->getAsConstantUnion()->getConstArray()[0].getIConst();
2006 case EOpMemoryBarrier:
2007 storageClassSemantics = (*argp)[1]->getAsConstantUnion()->getConstArray()[0].getIConst();
2008 semantics = (*argp)[2]->getAsConstantUnion()->getConstArray()[0].getIConst();
2014 if ((semantics & gl_SemanticsAcquire) &&
2015 (callNode.getOp() == EOpAtomicStore || callNode.getOp() == EOpImageAtomicStore)) {
2016 error(loc, "gl_SemanticsAcquire must not be used with (image) atomic store",
2017 fnCandidate.getName().c_str(), "");
2019 if ((semantics & gl_SemanticsRelease) &&
2020 (callNode.getOp() == EOpAtomicLoad || callNode.getOp() == EOpImageAtomicLoad)) {
2021 error(loc, "gl_SemanticsRelease must not be used with (image) atomic load",
2022 fnCandidate.getName().c_str(), "");
2024 if ((semantics & gl_SemanticsAcquireRelease) &&
2025 (callNode.getOp() == EOpAtomicStore || callNode.getOp() == EOpImageAtomicStore ||
2026 callNode.getOp() == EOpAtomicLoad || callNode.getOp() == EOpImageAtomicLoad)) {
2027 error(loc, "gl_SemanticsAcquireRelease must not be used with (image) atomic load/store",
2028 fnCandidate.getName().c_str(), "");
2030 if (((semantics | semantics2) & ~(gl_SemanticsAcquire |
2031 gl_SemanticsRelease |
2032 gl_SemanticsAcquireRelease |
2033 gl_SemanticsMakeAvailable |
2034 gl_SemanticsMakeVisible |
2035 gl_SemanticsVolatile))) {
2036 error(loc, "Invalid semantics value", fnCandidate.getName().c_str(), "");
2038 if (((storageClassSemantics | storageClassSemantics2) & ~(gl_StorageSemanticsBuffer |
2039 gl_StorageSemanticsShared |
2040 gl_StorageSemanticsImage |
2041 gl_StorageSemanticsOutput))) {
2042 error(loc, "Invalid storage class semantics value", fnCandidate.getName().c_str(), "");
2045 if (callNode.getOp() == EOpMemoryBarrier) {
2046 if (!IsPow2(semantics & (gl_SemanticsAcquire | gl_SemanticsRelease | gl_SemanticsAcquireRelease))) {
2047 error(loc, "Semantics must include exactly one of gl_SemanticsRelease, gl_SemanticsAcquire, or "
2048 "gl_SemanticsAcquireRelease", fnCandidate.getName().c_str(), "");
2051 if (semantics & (gl_SemanticsAcquire | gl_SemanticsRelease | gl_SemanticsAcquireRelease)) {
2052 if (!IsPow2(semantics & (gl_SemanticsAcquire | gl_SemanticsRelease | gl_SemanticsAcquireRelease))) {
2053 error(loc, "Semantics must not include multiple of gl_SemanticsRelease, gl_SemanticsAcquire, or "
2054 "gl_SemanticsAcquireRelease", fnCandidate.getName().c_str(), "");
2057 if (semantics2 & (gl_SemanticsAcquire | gl_SemanticsRelease | gl_SemanticsAcquireRelease)) {
2058 if (!IsPow2(semantics2 & (gl_SemanticsAcquire | gl_SemanticsRelease | gl_SemanticsAcquireRelease))) {
2059 error(loc, "semUnequal must not include multiple of gl_SemanticsRelease, gl_SemanticsAcquire, or "
2060 "gl_SemanticsAcquireRelease", fnCandidate.getName().c_str(), "");
2064 if (callNode.getOp() == EOpMemoryBarrier) {
2065 if (storageClassSemantics == 0) {
2066 error(loc, "Storage class semantics must not be zero", fnCandidate.getName().c_str(), "");
2069 if (callNode.getOp() == EOpBarrier && semantics != 0 && storageClassSemantics == 0) {
2070 error(loc, "Storage class semantics must not be zero", fnCandidate.getName().c_str(), "");
2072 if ((callNode.getOp() == EOpAtomicCompSwap || callNode.getOp() == EOpImageAtomicCompSwap) &&
2073 (semantics2 & (gl_SemanticsRelease | gl_SemanticsAcquireRelease))) {
2074 error(loc, "semUnequal must not be gl_SemanticsRelease or gl_SemanticsAcquireRelease",
2075 fnCandidate.getName().c_str(), "");
2077 if ((semantics & gl_SemanticsMakeAvailable) &&
2078 !(semantics & (gl_SemanticsRelease | gl_SemanticsAcquireRelease))) {
2079 error(loc, "gl_SemanticsMakeAvailable requires gl_SemanticsRelease or gl_SemanticsAcquireRelease",
2080 fnCandidate.getName().c_str(), "");
2082 if ((semantics & gl_SemanticsMakeVisible) &&
2083 !(semantics & (gl_SemanticsAcquire | gl_SemanticsAcquireRelease))) {
2084 error(loc, "gl_SemanticsMakeVisible requires gl_SemanticsAcquire or gl_SemanticsAcquireRelease",
2085 fnCandidate.getName().c_str(), "");
2087 if ((semantics & gl_SemanticsVolatile) &&
2088 (callNode.getOp() == EOpMemoryBarrier || callNode.getOp() == EOpBarrier)) {
2089 error(loc, "gl_SemanticsVolatile must not be used with memoryBarrier or controlBarrier",
2090 fnCandidate.getName().c_str(), "");
2092 if ((callNode.getOp() == EOpAtomicCompSwap || callNode.getOp() == EOpImageAtomicCompSwap) &&
2093 ((semantics ^ semantics2) & gl_SemanticsVolatile)) {
2094 error(loc, "semEqual and semUnequal must either both include gl_SemanticsVolatile or neither",
2095 fnCandidate.getName().c_str(), "");
2100 // Do additional checking of built-in function calls that is not caught
2101 // by normal semantic checks on argument type, extension tagging, etc.
2103 // Assumes there has been a semantically correct match to a built-in function prototype.
2105 void TParseContext::builtInOpCheck(const TSourceLoc& loc, const TFunction& fnCandidate, TIntermOperator& callNode)
2107 // Set up convenience accessors to the argument(s). There is almost always
2108 // multiple arguments for the cases below, but when there might be one,
2109 // check the unaryArg first.
2110 const TIntermSequence* argp = nullptr; // confusing to use [] syntax on a pointer, so this is to help get a reference
2111 const TIntermTyped* unaryArg = nullptr;
2112 const TIntermTyped* arg0 = nullptr;
2113 if (callNode.getAsAggregate()) {
2114 argp = &callNode.getAsAggregate()->getSequence();
2115 if (argp->size() > 0)
2116 arg0 = (*argp)[0]->getAsTyped();
2118 assert(callNode.getAsUnaryNode());
2119 unaryArg = callNode.getAsUnaryNode()->getOperand();
2123 TString featureString;
2124 const char* feature = nullptr;
2125 switch (callNode.getOp()) {
2127 case EOpTextureGather:
2128 case EOpTextureGatherOffset:
2129 case EOpTextureGatherOffsets:
2131 // Figure out which variants are allowed by what extensions,
2132 // and what arguments must be constant for which situations.
2134 featureString = fnCandidate.getName();
2135 featureString += "(...)";
2136 feature = featureString.c_str();
2137 profileRequires(loc, EEsProfile, 310, nullptr, feature);
2138 int compArg = -1; // track which argument, if any, is the constant component argument
2139 switch (callNode.getOp()) {
2140 case EOpTextureGather:
2141 // More than two arguments needs gpu_shader5, and rectangular or shadow needs gpu_shader5,
2142 // otherwise, need GL_ARB_texture_gather.
2143 if (fnCandidate.getParamCount() > 2 || fnCandidate[0].type->getSampler().dim == EsdRect || fnCandidate[0].type->getSampler().shadow) {
2144 profileRequires(loc, ~EEsProfile, 400, E_GL_ARB_gpu_shader5, feature);
2145 if (! fnCandidate[0].type->getSampler().shadow)
2148 profileRequires(loc, ~EEsProfile, 400, E_GL_ARB_texture_gather, feature);
2150 case EOpTextureGatherOffset:
2151 // GL_ARB_texture_gather is good enough for 2D non-shadow textures with no component argument
2152 if (fnCandidate[0].type->getSampler().dim == Esd2D && ! fnCandidate[0].type->getSampler().shadow && fnCandidate.getParamCount() == 3)
2153 profileRequires(loc, ~EEsProfile, 400, E_GL_ARB_texture_gather, feature);
2155 profileRequires(loc, ~EEsProfile, 400, E_GL_ARB_gpu_shader5, feature);
2156 if (! (*argp)[fnCandidate[0].type->getSampler().shadow ? 3 : 2]->getAsConstantUnion())
2157 profileRequires(loc, EEsProfile, 320, Num_AEP_gpu_shader5, AEP_gpu_shader5,
2158 "non-constant offset argument");
2159 if (! fnCandidate[0].type->getSampler().shadow)
2162 case EOpTextureGatherOffsets:
2163 profileRequires(loc, ~EEsProfile, 400, E_GL_ARB_gpu_shader5, feature);
2164 if (! fnCandidate[0].type->getSampler().shadow)
2166 // check for constant offsets
2167 if (! (*argp)[fnCandidate[0].type->getSampler().shadow ? 3 : 2]->getAsConstantUnion())
2168 error(loc, "must be a compile-time constant:", feature, "offsets argument");
2174 if (compArg > 0 && compArg < fnCandidate.getParamCount()) {
2175 if ((*argp)[compArg]->getAsConstantUnion()) {
2176 int value = (*argp)[compArg]->getAsConstantUnion()->getConstArray()[0].getIConst();
2177 if (value < 0 || value > 3)
2178 error(loc, "must be 0, 1, 2, or 3:", feature, "component argument");
2180 error(loc, "must be a compile-time constant:", feature, "component argument");
2184 if (callNode.getOp() == EOpTextureGather)
2185 bias = fnCandidate.getParamCount() > 3;
2186 else if (callNode.getOp() == EOpTextureGatherOffset ||
2187 callNode.getOp() == EOpTextureGatherOffsets)
2188 bias = fnCandidate.getParamCount() > 4;
2191 featureString = fnCandidate.getName();
2192 featureString += "with bias argument";
2193 feature = featureString.c_str();
2194 profileRequires(loc, ~EEsProfile, 450, nullptr, feature);
2195 requireExtensions(loc, 1, &E_GL_AMD_texture_gather_bias_lod, feature);
2199 case EOpSparseTextureGather:
2200 case EOpSparseTextureGatherOffset:
2201 case EOpSparseTextureGatherOffsets:
2204 if (callNode.getOp() == EOpSparseTextureGather)
2205 bias = fnCandidate.getParamCount() > 4;
2206 else if (callNode.getOp() == EOpSparseTextureGatherOffset ||
2207 callNode.getOp() == EOpSparseTextureGatherOffsets)
2208 bias = fnCandidate.getParamCount() > 5;
2211 featureString = fnCandidate.getName();
2212 featureString += "with bias argument";
2213 feature = featureString.c_str();
2214 profileRequires(loc, ~EEsProfile, 450, nullptr, feature);
2215 requireExtensions(loc, 1, &E_GL_AMD_texture_gather_bias_lod, feature);
2217 // As per GL_ARB_sparse_texture2 extension "Offsets" parameter must be constant integral expression
2218 // for sparseTextureGatherOffsetsARB just as textureGatherOffsets
2219 if (callNode.getOp() == EOpSparseTextureGatherOffsets) {
2220 int offsetsArg = arg0->getType().getSampler().shadow ? 3 : 2;
2221 if (!(*argp)[offsetsArg]->getAsConstantUnion())
2222 error(loc, "argument must be compile-time constant", "offsets", "");
2227 case EOpSparseTextureGatherLod:
2228 case EOpSparseTextureGatherLodOffset:
2229 case EOpSparseTextureGatherLodOffsets:
2231 requireExtensions(loc, 1, &E_GL_ARB_sparse_texture2, fnCandidate.getName().c_str());
2235 case EOpSwizzleInvocations:
2237 if (! (*argp)[1]->getAsConstantUnion())
2238 error(loc, "argument must be compile-time constant", "offset", "");
2240 unsigned offset[4] = {};
2241 offset[0] = (*argp)[1]->getAsConstantUnion()->getConstArray()[0].getUConst();
2242 offset[1] = (*argp)[1]->getAsConstantUnion()->getConstArray()[1].getUConst();
2243 offset[2] = (*argp)[1]->getAsConstantUnion()->getConstArray()[2].getUConst();
2244 offset[3] = (*argp)[1]->getAsConstantUnion()->getConstArray()[3].getUConst();
2245 if (offset[0] > 3 || offset[1] > 3 || offset[2] > 3 || offset[3] > 3)
2246 error(loc, "components must be in the range [0, 3]", "offset", "");
2252 case EOpSwizzleInvocationsMasked:
2254 if (! (*argp)[1]->getAsConstantUnion())
2255 error(loc, "argument must be compile-time constant", "mask", "");
2257 unsigned mask[3] = {};
2258 mask[0] = (*argp)[1]->getAsConstantUnion()->getConstArray()[0].getUConst();
2259 mask[1] = (*argp)[1]->getAsConstantUnion()->getConstArray()[1].getUConst();
2260 mask[2] = (*argp)[1]->getAsConstantUnion()->getConstArray()[2].getUConst();
2261 if (mask[0] > 31 || mask[1] > 31 || mask[2] > 31)
2262 error(loc, "components must be in the range [0, 31]", "mask", "");
2269 case EOpTextureOffset:
2270 case EOpTextureFetchOffset:
2271 case EOpTextureProjOffset:
2272 case EOpTextureLodOffset:
2273 case EOpTextureProjLodOffset:
2274 case EOpTextureGradOffset:
2275 case EOpTextureProjGradOffset:
2277 // Handle texture-offset limits checking
2278 // Pick which argument has to hold constant offsets
2280 switch (callNode.getOp()) {
2281 case EOpTextureOffset: arg = 2; break;
2282 case EOpTextureFetchOffset: arg = (arg0->getType().getSampler().isRect()) ? 2 : 3; break;
2283 case EOpTextureProjOffset: arg = 2; break;
2284 case EOpTextureLodOffset: arg = 3; break;
2285 case EOpTextureProjLodOffset: arg = 3; break;
2286 case EOpTextureGradOffset: arg = 4; break;
2287 case EOpTextureProjGradOffset: arg = 4; break;
2296 bool f16ShadowCompare = (*argp)[1]->getAsTyped()->getBasicType() == EbtFloat16 &&
2297 arg0->getType().getSampler().shadow;
2298 if (f16ShadowCompare)
2301 if (! (*argp)[arg]->getAsTyped()->getQualifier().isConstant())
2302 error(loc, "argument must be compile-time constant", "texel offset", "");
2303 else if ((*argp)[arg]->getAsConstantUnion()) {
2304 const TType& type = (*argp)[arg]->getAsTyped()->getType();
2305 for (int c = 0; c < type.getVectorSize(); ++c) {
2306 int offset = (*argp)[arg]->getAsConstantUnion()->getConstArray()[c].getIConst();
2307 if (offset > resources.maxProgramTexelOffset || offset < resources.minProgramTexelOffset)
2308 error(loc, "value is out of range:", "texel offset",
2309 "[gl_MinProgramTexelOffset, gl_MaxProgramTexelOffset]");
2313 if (callNode.getOp() == EOpTextureOffset) {
2314 TSampler s = arg0->getType().getSampler();
2315 if (s.is2D() && s.isArrayed() && s.isShadow()) {
2317 error(loc, "TextureOffset does not support sampler2DArrayShadow : ", "sampler", "ES Profile");
2318 else if (version <= 420)
2319 error(loc, "TextureOffset does not support sampler2DArrayShadow : ", "sampler", "version <= 420");
2329 if (!(*argp)[10]->getAsConstantUnion())
2330 error(loc, "argument must be compile-time constant", "payload number", "a");
2332 case EOpTraceRayMotionNV:
2333 if (!(*argp)[11]->getAsConstantUnion())
2334 error(loc, "argument must be compile-time constant", "payload number", "a");
2337 if (!(*argp)[10]->getAsConstantUnion())
2338 error(loc, "argument must be compile-time constant", "payload number", "a");
2340 unsigned int location = (*argp)[10]->getAsConstantUnion()->getAsConstantUnion()->getConstArray()[0].getUConst();
2341 if (!extensionTurnedOn(E_GL_EXT_spirv_intrinsics) && intermediate.checkLocationRT(0, location) < 0)
2342 error(loc, "with layout(location =", "no rayPayloadEXT/rayPayloadInEXT declared", "%d)", location);
2345 case EOpExecuteCallableNV:
2346 if (!(*argp)[1]->getAsConstantUnion())
2347 error(loc, "argument must be compile-time constant", "callable data number", "");
2349 case EOpExecuteCallableKHR:
2350 if (!(*argp)[1]->getAsConstantUnion())
2351 error(loc, "argument must be compile-time constant", "callable data number", "");
2353 unsigned int location = (*argp)[1]->getAsConstantUnion()->getAsConstantUnion()->getConstArray()[0].getUConst();
2354 if (!extensionTurnedOn(E_GL_EXT_spirv_intrinsics) && intermediate.checkLocationRT(1, location) < 0)
2355 error(loc, "with layout(location =", "no callableDataEXT/callableDataInEXT declared", "%d)", location);
2359 case EOpRayQueryGetIntersectionType:
2360 case EOpRayQueryGetIntersectionT:
2361 case EOpRayQueryGetIntersectionInstanceCustomIndex:
2362 case EOpRayQueryGetIntersectionInstanceId:
2363 case EOpRayQueryGetIntersectionInstanceShaderBindingTableRecordOffset:
2364 case EOpRayQueryGetIntersectionGeometryIndex:
2365 case EOpRayQueryGetIntersectionPrimitiveIndex:
2366 case EOpRayQueryGetIntersectionBarycentrics:
2367 case EOpRayQueryGetIntersectionFrontFace:
2368 case EOpRayQueryGetIntersectionObjectRayDirection:
2369 case EOpRayQueryGetIntersectionObjectRayOrigin:
2370 case EOpRayQueryGetIntersectionObjectToWorld:
2371 case EOpRayQueryGetIntersectionWorldToObject:
2372 if (!(*argp)[1]->getAsConstantUnion())
2373 error(loc, "argument must be compile-time constant", "committed", "");
2376 case EOpTextureQuerySamples:
2377 case EOpImageQuerySamples:
2378 // GL_ARB_shader_texture_image_samples
2379 profileRequires(loc, ~EEsProfile, 450, E_GL_ARB_shader_texture_image_samples, "textureSamples and imageSamples");
2382 case EOpImageAtomicAdd:
2383 case EOpImageAtomicMin:
2384 case EOpImageAtomicMax:
2385 case EOpImageAtomicAnd:
2386 case EOpImageAtomicOr:
2387 case EOpImageAtomicXor:
2388 case EOpImageAtomicExchange:
2389 case EOpImageAtomicCompSwap:
2390 case EOpImageAtomicLoad:
2391 case EOpImageAtomicStore:
2393 // Make sure the image types have the correct layout() format and correct argument types
2394 const TType& imageType = arg0->getType();
2395 if (imageType.getSampler().type == EbtInt || imageType.getSampler().type == EbtUint ||
2396 imageType.getSampler().type == EbtInt64 || imageType.getSampler().type == EbtUint64) {
2397 if (imageType.getQualifier().getFormat() != ElfR32i && imageType.getQualifier().getFormat() != ElfR32ui &&
2398 imageType.getQualifier().getFormat() != ElfR64i && imageType.getQualifier().getFormat() != ElfR64ui)
2399 error(loc, "only supported on image with format r32i or r32ui", fnCandidate.getName().c_str(), "");
2400 if (callNode.getType().getBasicType() == EbtInt64 && imageType.getQualifier().getFormat() != ElfR64i)
2401 error(loc, "only supported on image with format r64i", fnCandidate.getName().c_str(), "");
2402 else if (callNode.getType().getBasicType() == EbtUint64 && imageType.getQualifier().getFormat() != ElfR64ui)
2403 error(loc, "only supported on image with format r64ui", fnCandidate.getName().c_str(), "");
2404 } else if (imageType.getSampler().type == EbtFloat) {
2405 if (fnCandidate.getName().compare(0, 19, "imageAtomicExchange") == 0) {
2406 // imageAtomicExchange doesn't require an extension
2407 } else if ((fnCandidate.getName().compare(0, 14, "imageAtomicAdd") == 0) ||
2408 (fnCandidate.getName().compare(0, 15, "imageAtomicLoad") == 0) ||
2409 (fnCandidate.getName().compare(0, 16, "imageAtomicStore") == 0)) {
2410 requireExtensions(loc, 1, &E_GL_EXT_shader_atomic_float, fnCandidate.getName().c_str());
2411 } else if ((fnCandidate.getName().compare(0, 14, "imageAtomicMin") == 0) ||
2412 (fnCandidate.getName().compare(0, 14, "imageAtomicMax") == 0)) {
2413 requireExtensions(loc, 1, &E_GL_EXT_shader_atomic_float2, fnCandidate.getName().c_str());
2415 error(loc, "only supported on integer images", fnCandidate.getName().c_str(), "");
2417 if (imageType.getQualifier().getFormat() != ElfR32f && isEsProfile())
2418 error(loc, "only supported on image with format r32f", fnCandidate.getName().c_str(), "");
2420 error(loc, "not supported on this image type", fnCandidate.getName().c_str(), "");
2423 const size_t maxArgs = imageType.getSampler().isMultiSample() ? 5 : 4;
2424 if (argp->size() > maxArgs) {
2425 requireExtensions(loc, 1, &E_GL_KHR_memory_scope_semantics, fnCandidate.getName().c_str());
2426 memorySemanticsCheck(loc, fnCandidate, callNode);
2433 case EOpAtomicSubtract:
2439 case EOpAtomicExchange:
2440 case EOpAtomicCompSwap:
2442 case EOpAtomicStore:
2444 if (argp->size() > 3) {
2445 requireExtensions(loc, 1, &E_GL_KHR_memory_scope_semantics, fnCandidate.getName().c_str());
2446 memorySemanticsCheck(loc, fnCandidate, callNode);
2447 if ((callNode.getOp() == EOpAtomicAdd || callNode.getOp() == EOpAtomicExchange ||
2448 callNode.getOp() == EOpAtomicLoad || callNode.getOp() == EOpAtomicStore) &&
2449 (arg0->getType().getBasicType() == EbtFloat ||
2450 arg0->getType().getBasicType() == EbtDouble)) {
2451 requireExtensions(loc, 1, &E_GL_EXT_shader_atomic_float, fnCandidate.getName().c_str());
2452 } else if ((callNode.getOp() == EOpAtomicAdd || callNode.getOp() == EOpAtomicExchange ||
2453 callNode.getOp() == EOpAtomicLoad || callNode.getOp() == EOpAtomicStore ||
2454 callNode.getOp() == EOpAtomicMin || callNode.getOp() == EOpAtomicMax) &&
2455 arg0->getType().isFloatingDomain()) {
2456 requireExtensions(loc, 1, &E_GL_EXT_shader_atomic_float2, fnCandidate.getName().c_str());
2458 } else if (arg0->getType().getBasicType() == EbtInt64 || arg0->getType().getBasicType() == EbtUint64) {
2459 const char* const extensions[2] = { E_GL_NV_shader_atomic_int64,
2460 E_GL_EXT_shader_atomic_int64 };
2461 requireExtensions(loc, 2, extensions, fnCandidate.getName().c_str());
2462 } else if ((callNode.getOp() == EOpAtomicAdd || callNode.getOp() == EOpAtomicExchange) &&
2463 (arg0->getType().getBasicType() == EbtFloat ||
2464 arg0->getType().getBasicType() == EbtDouble)) {
2465 requireExtensions(loc, 1, &E_GL_EXT_shader_atomic_float, fnCandidate.getName().c_str());
2466 } else if ((callNode.getOp() == EOpAtomicAdd || callNode.getOp() == EOpAtomicExchange ||
2467 callNode.getOp() == EOpAtomicLoad || callNode.getOp() == EOpAtomicStore ||
2468 callNode.getOp() == EOpAtomicMin || callNode.getOp() == EOpAtomicMax) &&
2469 arg0->getType().isFloatingDomain()) {
2470 requireExtensions(loc, 1, &E_GL_EXT_shader_atomic_float2, fnCandidate.getName().c_str());
2473 const TIntermTyped* base = TIntermediate::findLValueBase(arg0, true , true);
2474 const TType* refType = (base->getType().isReference()) ? base->getType().getReferentType() : nullptr;
2475 const TQualifier& qualifier = (refType != nullptr) ? refType->getQualifier() : base->getType().getQualifier();
2476 if (qualifier.storage != EvqShared && qualifier.storage != EvqBuffer && qualifier.storage != EvqtaskPayloadSharedEXT)
2477 error(loc,"Atomic memory function can only be used for shader storage block member or shared variable.",
2478 fnCandidate.getName().c_str(), "");
2483 case EOpInterpolateAtCentroid:
2484 case EOpInterpolateAtSample:
2485 case EOpInterpolateAtOffset:
2486 case EOpInterpolateAtVertex:
2487 // Make sure the first argument is an interpolant, or an array element of an interpolant
2488 if (arg0->getType().getQualifier().storage != EvqVaryingIn) {
2489 // It might still be an array element.
2491 // We could check more, but the semantics of the first argument are already met; the
2492 // only way to turn an array into a float/vec* is array dereference and swizzle.
2494 // ES and desktop 4.3 and earlier: swizzles may not be used
2495 // desktop 4.4 and later: swizzles may be used
2496 bool swizzleOkay = (!isEsProfile()) && (version >= 440);
2497 const TIntermTyped* base = TIntermediate::findLValueBase(arg0, swizzleOkay);
2498 if (base == nullptr || base->getType().getQualifier().storage != EvqVaryingIn)
2499 error(loc, "first argument must be an interpolant, or interpolant-array element", fnCandidate.getName().c_str(), "");
2502 if (callNode.getOp() == EOpInterpolateAtVertex) {
2503 if (!arg0->getType().getQualifier().isExplicitInterpolation())
2504 error(loc, "argument must be qualified as __explicitInterpAMD in", "interpolant", "");
2506 if (! (*argp)[1]->getAsConstantUnion())
2507 error(loc, "argument must be compile-time constant", "vertex index", "");
2509 unsigned vertexIdx = (*argp)[1]->getAsConstantUnion()->getConstArray()[0].getUConst();
2511 error(loc, "must be in the range [0, 2]", "vertex index", "");
2517 case EOpEmitStreamVertex:
2518 case EOpEndStreamPrimitive:
2520 requireExtensions(loc, 1, &E_GL_ARB_gpu_shader5, "if the verison is 150 , the EmitStreamVertex and EndStreamPrimitive only support at extension GL_ARB_gpu_shader5");
2521 intermediate.setMultiStream();
2524 case EOpSubgroupClusteredAdd:
2525 case EOpSubgroupClusteredMul:
2526 case EOpSubgroupClusteredMin:
2527 case EOpSubgroupClusteredMax:
2528 case EOpSubgroupClusteredAnd:
2529 case EOpSubgroupClusteredOr:
2530 case EOpSubgroupClusteredXor:
2531 // The <clusterSize> as used in the subgroupClustered<op>() operations must be:
2532 // - An integral constant expression.
2535 if ((*argp)[1]->getAsConstantUnion() == nullptr)
2536 error(loc, "argument must be compile-time constant", "cluster size", "");
2538 int size = (*argp)[1]->getAsConstantUnion()->getConstArray()[0].getIConst();
2540 error(loc, "argument must be at least 1", "cluster size", "");
2541 else if (!IsPow2(size))
2542 error(loc, "argument must be a power of 2", "cluster size", "");
2546 case EOpSubgroupBroadcast:
2547 case EOpSubgroupQuadBroadcast:
2548 if (spvVersion.spv < EShTargetSpv_1_5) {
2549 // <id> must be an integral constant expression.
2550 if ((*argp)[1]->getAsConstantUnion() == nullptr)
2551 error(loc, "argument must be compile-time constant", "id", "");
2556 case EOpMemoryBarrier:
2557 if (argp->size() > 0) {
2558 requireExtensions(loc, 1, &E_GL_KHR_memory_scope_semantics, fnCandidate.getName().c_str());
2559 memorySemanticsCheck(loc, fnCandidate, callNode);
2564 if (profile == EEsProfile && version < 310) {
2565 // Look for specific signatures
2566 if ((*argp)[0]->getAsTyped()->getBasicType() != EbtFloat &&
2567 (*argp)[1]->getAsTyped()->getBasicType() != EbtFloat &&
2568 (*argp)[2]->getAsTyped()->getBasicType() == EbtBool) {
2569 requireExtensions(loc, 1, &E_GL_EXT_shader_integer_mix, "specific signature of builtin mix");
2573 if (profile != EEsProfile && version < 450) {
2574 if ((*argp)[0]->getAsTyped()->getBasicType() != EbtFloat &&
2575 (*argp)[0]->getAsTyped()->getBasicType() != EbtDouble &&
2576 (*argp)[1]->getAsTyped()->getBasicType() != EbtFloat &&
2577 (*argp)[1]->getAsTyped()->getBasicType() != EbtDouble &&
2578 (*argp)[2]->getAsTyped()->getBasicType() == EbtBool) {
2579 requireExtensions(loc, 1, &E_GL_EXT_shader_integer_mix, fnCandidate.getName().c_str());
2590 // Texture operations on texture objects (aside from texelFetch on a
2591 // textureBuffer) require EXT_samplerless_texture_functions.
2592 switch (callNode.getOp()) {
2593 case EOpTextureQuerySize:
2594 case EOpTextureQueryLevels:
2595 case EOpTextureQuerySamples:
2596 case EOpTextureFetch:
2597 case EOpTextureFetchOffset:
2599 const TSampler& sampler = fnCandidate[0].type->getSampler();
2601 const bool isTexture = sampler.isTexture() && !sampler.isCombined();
2602 const bool isBuffer = sampler.isBuffer();
2603 const bool isFetch = callNode.getOp() == EOpTextureFetch || callNode.getOp() == EOpTextureFetchOffset;
2605 if (isTexture && (!isBuffer || !isFetch))
2606 requireExtensions(loc, 1, &E_GL_EXT_samplerless_texture_functions, fnCandidate.getName().c_str());
2615 if (callNode.isSubgroup()) {
2616 // these require SPIR-V 1.3
2617 if (spvVersion.spv > 0 && spvVersion.spv < EShTargetSpv_1_3)
2618 error(loc, "requires SPIR-V 1.3", "subgroup op", "");
2620 // Check that if extended types are being used that the correct extensions are enabled.
2621 if (arg0 != nullptr) {
2622 const TType& type = arg0->getType();
2623 bool enhanced = intermediate.getEnhancedMsgs();
2624 switch (type.getBasicType()) {
2629 requireExtensions(loc, 1, &E_GL_EXT_shader_subgroup_extended_types_int8, type.getCompleteString(enhanced).c_str());
2633 requireExtensions(loc, 1, &E_GL_EXT_shader_subgroup_extended_types_int16, type.getCompleteString(enhanced).c_str());
2637 requireExtensions(loc, 1, &E_GL_EXT_shader_subgroup_extended_types_int64, type.getCompleteString(enhanced).c_str());
2640 requireExtensions(loc, 1, &E_GL_EXT_shader_subgroup_extended_types_float16, type.getCompleteString(enhanced).c_str());
2649 extern bool PureOperatorBuiltins;
2651 // Deprecated! Use PureOperatorBuiltins == true instead, in which case this
2652 // functionality is handled in builtInOpCheck() instead of here.
2654 // Do additional checking of built-in function calls that were not mapped
2655 // to built-in operations (e.g., texturing functions).
2657 // Assumes there has been a semantically correct match to a built-in function.
2659 void TParseContext::nonOpBuiltInCheck(const TSourceLoc& loc, const TFunction& fnCandidate, TIntermAggregate& callNode)
2661 // Further maintenance of this function is deprecated, because the "correct"
2662 // future-oriented design is to not have to do string compares on function names.
2664 // If PureOperatorBuiltins == true, then all built-ins should be mapped
2665 // to a TOperator, and this function would then never get called.
2667 assert(PureOperatorBuiltins == false);
2669 // built-in texturing functions get their return value precision from the precision of the sampler
2670 if (fnCandidate.getType().getQualifier().precision == EpqNone &&
2671 fnCandidate.getParamCount() > 0 && fnCandidate[0].type->getBasicType() == EbtSampler)
2672 callNode.getQualifier().precision = callNode.getSequence()[0]->getAsTyped()->getQualifier().precision;
2674 if (fnCandidate.getName().compare(0, 7, "texture") == 0) {
2675 if (fnCandidate.getName().compare(0, 13, "textureGather") == 0) {
2676 TString featureString = fnCandidate.getName() + "(...)";
2677 const char* feature = featureString.c_str();
2678 profileRequires(loc, EEsProfile, 310, nullptr, feature);
2680 int compArg = -1; // track which argument, if any, is the constant component argument
2681 if (fnCandidate.getName().compare("textureGatherOffset") == 0) {
2682 // GL_ARB_texture_gather is good enough for 2D non-shadow textures with no component argument
2683 if (fnCandidate[0].type->getSampler().dim == Esd2D && ! fnCandidate[0].type->getSampler().shadow && fnCandidate.getParamCount() == 3)
2684 profileRequires(loc, ~EEsProfile, 400, E_GL_ARB_texture_gather, feature);
2686 profileRequires(loc, ~EEsProfile, 400, E_GL_ARB_gpu_shader5, feature);
2687 int offsetArg = fnCandidate[0].type->getSampler().shadow ? 3 : 2;
2688 if (! callNode.getSequence()[offsetArg]->getAsConstantUnion())
2689 profileRequires(loc, EEsProfile, 320, Num_AEP_gpu_shader5, AEP_gpu_shader5,
2690 "non-constant offset argument");
2691 if (! fnCandidate[0].type->getSampler().shadow)
2693 } else if (fnCandidate.getName().compare("textureGatherOffsets") == 0) {
2694 profileRequires(loc, ~EEsProfile, 400, E_GL_ARB_gpu_shader5, feature);
2695 if (! fnCandidate[0].type->getSampler().shadow)
2697 // check for constant offsets
2698 int offsetArg = fnCandidate[0].type->getSampler().shadow ? 3 : 2;
2699 if (! callNode.getSequence()[offsetArg]->getAsConstantUnion())
2700 error(loc, "must be a compile-time constant:", feature, "offsets argument");
2701 } else if (fnCandidate.getName().compare("textureGather") == 0) {
2702 // More than two arguments needs gpu_shader5, and rectangular or shadow needs gpu_shader5,
2703 // otherwise, need GL_ARB_texture_gather.
2704 if (fnCandidate.getParamCount() > 2 || fnCandidate[0].type->getSampler().dim == EsdRect || fnCandidate[0].type->getSampler().shadow) {
2705 profileRequires(loc, ~EEsProfile, 400, E_GL_ARB_gpu_shader5, feature);
2706 if (! fnCandidate[0].type->getSampler().shadow)
2709 profileRequires(loc, ~EEsProfile, 400, E_GL_ARB_texture_gather, feature);
2712 if (compArg > 0 && compArg < fnCandidate.getParamCount()) {
2713 if (callNode.getSequence()[compArg]->getAsConstantUnion()) {
2714 int value = callNode.getSequence()[compArg]->getAsConstantUnion()->getConstArray()[0].getIConst();
2715 if (value < 0 || value > 3)
2716 error(loc, "must be 0, 1, 2, or 3:", feature, "component argument");
2718 error(loc, "must be a compile-time constant:", feature, "component argument");
2721 // this is only for functions not starting "textureGather"...
2722 if (fnCandidate.getName().find("Offset") != TString::npos) {
2724 // Handle texture-offset limits checking
2726 if (fnCandidate.getName().compare("textureOffset") == 0)
2728 else if (fnCandidate.getName().compare("texelFetchOffset") == 0)
2730 else if (fnCandidate.getName().compare("textureProjOffset") == 0)
2732 else if (fnCandidate.getName().compare("textureLodOffset") == 0)
2734 else if (fnCandidate.getName().compare("textureProjLodOffset") == 0)
2736 else if (fnCandidate.getName().compare("textureGradOffset") == 0)
2738 else if (fnCandidate.getName().compare("textureProjGradOffset") == 0)
2742 if (! callNode.getSequence()[arg]->getAsConstantUnion())
2743 error(loc, "argument must be compile-time constant", "texel offset", "");
2745 const TType& type = callNode.getSequence()[arg]->getAsTyped()->getType();
2746 for (int c = 0; c < type.getVectorSize(); ++c) {
2747 int offset = callNode.getSequence()[arg]->getAsConstantUnion()->getConstArray()[c].getIConst();
2748 if (offset > resources.maxProgramTexelOffset || offset < resources.minProgramTexelOffset)
2749 error(loc, "value is out of range:", "texel offset", "[gl_MinProgramTexelOffset, gl_MaxProgramTexelOffset]");
2757 // GL_ARB_shader_texture_image_samples
2758 if (fnCandidate.getName().compare(0, 14, "textureSamples") == 0 || fnCandidate.getName().compare(0, 12, "imageSamples") == 0)
2759 profileRequires(loc, ~EEsProfile, 450, E_GL_ARB_shader_texture_image_samples, "textureSamples and imageSamples");
2761 if (fnCandidate.getName().compare(0, 11, "imageAtomic") == 0) {
2762 const TType& imageType = callNode.getSequence()[0]->getAsTyped()->getType();
2763 if (imageType.getSampler().type == EbtInt || imageType.getSampler().type == EbtUint) {
2764 if (imageType.getQualifier().getFormat() != ElfR32i && imageType.getQualifier().getFormat() != ElfR32ui)
2765 error(loc, "only supported on image with format r32i or r32ui", fnCandidate.getName().c_str(), "");
2767 if (fnCandidate.getName().compare(0, 19, "imageAtomicExchange") != 0)
2768 error(loc, "only supported on integer images", fnCandidate.getName().c_str(), "");
2769 else if (imageType.getQualifier().getFormat() != ElfR32f && isEsProfile())
2770 error(loc, "only supported on image with format r32f", fnCandidate.getName().c_str(), "");
2778 // Do any extra checking for a user function call.
2780 void TParseContext::userFunctionCallCheck(const TSourceLoc& loc, TIntermAggregate& callNode)
2782 TIntermSequence& arguments = callNode.getSequence();
2784 for (int i = 0; i < (int)arguments.size(); ++i)
2785 samplerConstructorLocationCheck(loc, "call argument", arguments[i]);
2789 // Emit an error if this is a sampler constructor
2791 void TParseContext::samplerConstructorLocationCheck(const TSourceLoc& loc, const char* token, TIntermNode* node)
2793 if (node->getAsOperator() && node->getAsOperator()->getOp() == EOpConstructTextureSampler)
2794 error(loc, "sampler constructor must appear at point of use", token, "");
2798 // Handle seeing a built-in constructor in a grammar production.
2800 TFunction* TParseContext::handleConstructorCall(const TSourceLoc& loc, const TPublicType& publicType)
2802 TType type(publicType);
2803 type.getQualifier().precision = EpqNone;
2805 if (type.isArray()) {
2806 profileRequires(loc, ENoProfile, 120, E_GL_3DL_array_objects, "arrayed constructor");
2807 profileRequires(loc, EEsProfile, 300, nullptr, "arrayed constructor");
2810 TOperator op = intermediate.mapTypeToConstructorOp(type);
2812 if (op == EOpNull) {
2813 if (intermediate.getEnhancedMsgs() && type.getBasicType() == EbtSampler)
2814 error(loc, "function not supported in this version; use texture() instead", "texture*D*", "");
2816 error(loc, "cannot construct this type", type.getBasicString(), "");
2817 op = EOpConstructFloat;
2818 TType errorType(EbtFloat);
2819 type.shallowCopy(errorType);
2824 return new TFunction(&empty, type, op);
2827 // Handle seeing a precision qualifier in the grammar.
2828 void TParseContext::handlePrecisionQualifier(const TSourceLoc& /*loc*/, TQualifier& qualifier, TPrecisionQualifier precision)
2830 if (obeyPrecisionQualifiers())
2831 qualifier.precision = precision;
2834 // Check for messages to give on seeing a precision qualifier used in a
2835 // declaration in the grammar.
2836 void TParseContext::checkPrecisionQualifier(const TSourceLoc& loc, TPrecisionQualifier)
2838 if (precisionManager.shouldWarnAboutDefaults()) {
2839 warn(loc, "all default precisions are highp; use precision statements to quiet warning, e.g.:\n"
2840 " \"precision mediump int; precision highp float;\"", "", "");
2841 precisionManager.defaultWarningGiven();
2846 // Same error message for all places assignments don't work.
2848 void TParseContext::assignError(const TSourceLoc& loc, const char* op, TString left, TString right)
2850 error(loc, "", op, "cannot convert from '%s' to '%s'",
2851 right.c_str(), left.c_str());
2855 // Same error message for all places unary operations don't work.
2857 void TParseContext::unaryOpError(const TSourceLoc& loc, const char* op, TString operand)
2859 error(loc, " wrong operand type", op,
2860 "no operation '%s' exists that takes an operand of type %s (or there is no acceptable conversion)",
2861 op, operand.c_str());
2865 // Same error message for all binary operations don't work.
2867 void TParseContext::binaryOpError(const TSourceLoc& loc, const char* op, TString left, TString right)
2869 error(loc, " wrong operand types:", op,
2870 "no operation '%s' exists that takes a left-hand operand of type '%s' and "
2871 "a right operand of type '%s' (or there is no acceptable conversion)",
2872 op, left.c_str(), right.c_str());
2876 // A basic type of EbtVoid is a key that the name string was seen in the source, but
2877 // it was not found as a variable in the symbol table. If so, give the error
2878 // message and insert a dummy variable in the symbol table to prevent future errors.
2880 void TParseContext::variableCheck(TIntermTyped*& nodePtr)
2882 TIntermSymbol* symbol = nodePtr->getAsSymbolNode();
2886 if (symbol->getType().getBasicType() == EbtVoid) {
2887 const char *extraInfoFormat = "";
2888 if (spvVersion.vulkan != 0 && symbol->getName() == "gl_VertexID") {
2889 extraInfoFormat = "(Did you mean gl_VertexIndex?)";
2890 } else if (spvVersion.vulkan != 0 && symbol->getName() == "gl_InstanceID") {
2891 extraInfoFormat = "(Did you mean gl_InstanceIndex?)";
2893 error(symbol->getLoc(), "undeclared identifier", symbol->getName().c_str(), extraInfoFormat);
2895 // Add to symbol table to prevent future error messages on the same name
2896 if (symbol->getName().size() > 0) {
2897 TVariable* fakeVariable = new TVariable(&symbol->getName(), TType(EbtFloat));
2898 symbolTable.insert(*fakeVariable);
2900 // substitute a symbol node for this new variable
2901 nodePtr = intermediate.addSymbol(*fakeVariable, symbol->getLoc());
2904 switch (symbol->getQualifier().storage) {
2906 profileRequires(symbol->getLoc(), ENoProfile, 120, nullptr, "gl_PointCoord");
2908 default: break; // some compilers want this
2914 // Both test and if necessary, spit out an error, to see if the node is really
2915 // an l-value that can be operated on this way.
2917 // Returns true if there was an error.
2919 bool TParseContext::lValueErrorCheck(const TSourceLoc& loc, const char* op, TIntermTyped* node)
2921 TIntermBinary* binaryNode = node->getAsBinaryNode();
2924 bool errorReturn = false;
2926 switch(binaryNode->getOp()) {
2928 case EOpIndexDirect:
2929 case EOpIndexIndirect:
2930 // ... tessellation control shader ...
2931 // If a per-vertex output variable is used as an l-value, it is a
2932 // compile-time or link-time error if the expression indicating the
2933 // vertex index is not the identifier gl_InvocationID.
2934 if (language == EShLangTessControl) {
2935 const TType& leftType = binaryNode->getLeft()->getType();
2936 if (leftType.getQualifier().storage == EvqVaryingOut && ! leftType.getQualifier().patch && binaryNode->getLeft()->getAsSymbolNode()) {
2937 // we have a per-vertex output
2938 const TIntermSymbol* rightSymbol = binaryNode->getRight()->getAsSymbolNode();
2939 if (! rightSymbol || rightSymbol->getQualifier().builtIn != EbvInvocationId)
2940 error(loc, "tessellation-control per-vertex output l-value must be indexed with gl_InvocationID", "[]", "");
2943 break; // left node is checked by base class
2945 case EOpVectorSwizzle:
2946 errorReturn = lValueErrorCheck(loc, op, binaryNode->getLeft());
2948 int offset[4] = {0,0,0,0};
2950 TIntermTyped* rightNode = binaryNode->getRight();
2951 TIntermAggregate *aggrNode = rightNode->getAsAggregate();
2953 for (TIntermSequence::iterator p = aggrNode->getSequence().begin();
2954 p != aggrNode->getSequence().end(); p++) {
2955 int value = (*p)->getAsTyped()->getAsConstantUnion()->getConstArray()[0].getIConst();
2957 if (offset[value] > 1) {
2958 error(loc, " l-value of swizzle cannot have duplicate components", op, "", "");
2971 error(loc, " l-value required", op, "", "");
2976 if (binaryNode && binaryNode->getOp() == EOpIndexDirectStruct && binaryNode->getLeft()->isReference())
2979 // Let the base class check errors
2980 if (TParseContextBase::lValueErrorCheck(loc, op, node))
2983 const char* symbol = nullptr;
2984 TIntermSymbol* symNode = node->getAsSymbolNode();
2985 if (symNode != nullptr)
2986 symbol = symNode->getName().c_str();
2988 const char* message = nullptr;
2989 switch (node->getQualifier().storage) {
2990 case EvqVaryingIn: message = "can't modify shader input"; break;
2991 case EvqInstanceId: message = "can't modify gl_InstanceID"; break;
2992 case EvqVertexId: message = "can't modify gl_VertexID"; break;
2993 case EvqFace: message = "can't modify gl_FrontFace"; break;
2994 case EvqFragCoord: message = "can't modify gl_FragCoord"; break;
2995 case EvqPointCoord: message = "can't modify gl_PointCoord"; break;
2997 intermediate.setDepthReplacing();
2998 // "In addition, it is an error to statically write to gl_FragDepth in the fragment shader."
2999 if (isEsProfile() && intermediate.getEarlyFragmentTests())
3000 message = "can't modify gl_FragDepth if using early_fragment_tests";
3002 case EvqFragStencil:
3003 intermediate.setStencilReplacing();
3004 // "In addition, it is an error to statically write to gl_FragDepth in the fragment shader."
3005 if (isEsProfile() && intermediate.getEarlyFragmentTests())
3006 message = "can't modify EvqFragStencil if using early_fragment_tests";
3009 case EvqtaskPayloadSharedEXT:
3010 if (language == EShLangMesh)
3011 message = "can't modify variable with storage qualifier taskPayloadSharedEXT in mesh shaders";
3017 if (message == nullptr && binaryNode == nullptr && symNode == nullptr) {
3018 error(loc, " l-value required", op, "", "");
3024 // Everything else is okay, no error.
3026 if (message == nullptr)
3030 // If we get here, we have an error and a message.
3033 error(loc, " l-value required", op, "\"%s\" (%s)", symbol, message);
3035 error(loc, " l-value required", op, "(%s)", message);
3040 // Test for and give an error if the node can't be read from.
3041 void TParseContext::rValueErrorCheck(const TSourceLoc& loc, const char* op, TIntermTyped* node)
3043 // Let the base class check errors
3044 TParseContextBase::rValueErrorCheck(loc, op, node);
3046 TIntermSymbol* symNode = node->getAsSymbolNode();
3047 if (!(symNode && symNode->getQualifier().isWriteOnly())) // base class checks
3048 if (symNode && symNode->getQualifier().isExplicitInterpolation())
3049 error(loc, "can't read from explicitly-interpolated object: ", op, symNode->getName().c_str());
3051 // local_size_{xyz} must be assigned or specialized before gl_WorkGroupSize can be assigned.
3052 if(node->getQualifier().builtIn == EbvWorkGroupSize &&
3053 !(intermediate.isLocalSizeSet() || intermediate.isLocalSizeSpecialized()))
3054 error(loc, "can't read from gl_WorkGroupSize before a fixed workgroup size has been declared", op, "");
3058 // Both test, and if necessary spit out an error, to see if the node is really
3061 void TParseContext::constantValueCheck(TIntermTyped* node, const char* token)
3063 if (! node->getQualifier().isConstant())
3064 error(node->getLoc(), "constant expression required", token, "");
3068 // Both test, and if necessary spit out an error, to see if the node is really
3069 // a 32-bit integer or can implicitly convert to one.
3071 void TParseContext::integerCheck(const TIntermTyped* node, const char* token)
3073 auto from_type = node->getBasicType();
3074 if ((from_type == EbtInt || from_type == EbtUint ||
3075 intermediate.canImplicitlyPromote(from_type, EbtInt, EOpNull) ||
3076 intermediate.canImplicitlyPromote(from_type, EbtUint, EOpNull)) && node->isScalar())
3079 error(node->getLoc(), "scalar integer expression required", token, "");
3083 // Both test, and if necessary spit out an error, to see if we are currently
3086 void TParseContext::globalCheck(const TSourceLoc& loc, const char* token)
3088 if (! symbolTable.atGlobalLevel())
3089 error(loc, "not allowed in nested scope", token, "");
3093 // Reserved errors for GLSL.
3095 void TParseContext::reservedErrorCheck(const TSourceLoc& loc, const TString& identifier)
3097 // "Identifiers starting with "gl_" are reserved for use by OpenGL, and may not be
3098 // declared in a shader; this results in a compile-time error."
3099 if (! symbolTable.atBuiltInLevel()) {
3100 if (builtInName(identifier) && !extensionTurnedOn(E_GL_EXT_spirv_intrinsics))
3101 // The extension GL_EXT_spirv_intrinsics allows us to declare identifiers starting with "gl_".
3102 error(loc, "identifiers starting with \"gl_\" are reserved", identifier.c_str(), "");
3104 // "__" are not supposed to be an error. ES 300 (and desktop) added the clarification:
3105 // "In addition, all identifiers containing two consecutive underscores (__) are
3106 // reserved; using such a name does not itself result in an error, but may result
3107 // in undefined behavior."
3108 // however, before that, ES tests required an error.
3109 if (identifier.find("__") != TString::npos && !extensionTurnedOn(E_GL_EXT_spirv_intrinsics)) {
3110 // The extension GL_EXT_spirv_intrinsics allows us to declare identifiers starting with "__".
3111 if (isEsProfile() && version < 300)
3112 error(loc, "identifiers containing consecutive underscores (\"__\") are reserved, and an error if version < 300", identifier.c_str(), "");
3114 warn(loc, "identifiers containing consecutive underscores (\"__\") are reserved", identifier.c_str(), "");
3120 // Reserved errors for the preprocessor.
3122 void TParseContext::reservedPpErrorCheck(const TSourceLoc& loc, const char* identifier, const char* op)
3124 // "__" are not supposed to be an error. ES 300 (and desktop) added the clarification:
3125 // "All macro names containing two consecutive underscores ( __ ) are reserved;
3126 // defining such a name does not itself result in an error, but may result in
3127 // undefined behavior. All macro names prefixed with "GL_" ("GL" followed by a
3128 // single underscore) are also reserved, and defining such a name results in a
3129 // compile-time error."
3130 // however, before that, ES tests required an error.
3131 if (strncmp(identifier, "GL_", 3) == 0 && !extensionTurnedOn(E_GL_EXT_spirv_intrinsics))
3132 // The extension GL_EXT_spirv_intrinsics allows us to declare macros prefixed with "GL_".
3133 ppError(loc, "names beginning with \"GL_\" can't be (un)defined:", op, identifier);
3134 else if (strncmp(identifier, "defined", 8) == 0)
3135 if (relaxedErrors())
3136 ppWarn(loc, "\"defined\" is (un)defined:", op, identifier);
3138 ppError(loc, "\"defined\" can't be (un)defined:", op, identifier);
3139 else if (strstr(identifier, "__") != 0 && !extensionTurnedOn(E_GL_EXT_spirv_intrinsics)) {
3140 // The extension GL_EXT_spirv_intrinsics allows us to declare macros prefixed with "__".
3141 if (isEsProfile() && version >= 300 &&
3142 (strcmp(identifier, "__LINE__") == 0 ||
3143 strcmp(identifier, "__FILE__") == 0 ||
3144 strcmp(identifier, "__VERSION__") == 0))
3145 ppError(loc, "predefined names can't be (un)defined:", op, identifier);
3147 if (isEsProfile() && version < 300 && !relaxedErrors())
3148 ppError(loc, "names containing consecutive underscores are reserved, and an error if version < 300:", op, identifier);
3150 ppWarn(loc, "names containing consecutive underscores are reserved:", op, identifier);
3156 // See if this version/profile allows use of the line-continuation character '\'.
3158 // Returns true if a line continuation should be done.
3160 bool TParseContext::lineContinuationCheck(const TSourceLoc& loc, bool endOfComment)
3166 const char* message = "line continuation";
3168 bool lineContinuationAllowed = (isEsProfile() && version >= 300) ||
3169 (!isEsProfile() && (version >= 420 || extensionTurnedOn(E_GL_ARB_shading_language_420pack)));
3172 if (lineContinuationAllowed)
3173 warn(loc, "used at end of comment; the following line is still part of the comment", message, "");
3175 warn(loc, "used at end of comment, but this version does not provide line continuation", message, "");
3177 return lineContinuationAllowed;
3180 if (relaxedErrors()) {
3181 if (! lineContinuationAllowed)
3182 warn(loc, "not allowed in this version", message, "");
3185 profileRequires(loc, EEsProfile, 300, nullptr, message);
3186 profileRequires(loc, ~EEsProfile, 420, E_GL_ARB_shading_language_420pack, message);
3189 return lineContinuationAllowed;
3192 bool TParseContext::builtInName(const TString& identifier)
3194 return identifier.compare(0, 3, "gl_") == 0;
3198 // Make sure there is enough data and not too many arguments provided to the
3199 // constructor to build something of the type of the constructor. Also returns
3200 // the type of the constructor.
3202 // Part of establishing type is establishing specialization-constness.
3203 // We don't yet know "top down" whether type is a specialization constant,
3204 // but a const constructor can becomes a specialization constant if any of
3205 // its children are, subject to KHR_vulkan_glsl rules:
3207 // - int(), uint(), and bool() constructors for type conversions
3208 // from any of the following types to any of the following types:
3212 // - vector versions of the above conversion constructors
3214 // Returns true if there was an error in construction.
3216 bool TParseContext::constructorError(const TSourceLoc& loc, TIntermNode* node, TFunction& function, TOperator op, TType& type)
3218 // See if the constructor does not establish the main type, only requalifies
3219 // it, in which case the type comes from the argument instead of from the
3220 // constructor function.
3223 case EOpConstructNonuniform:
3224 if (node != nullptr && node->getAsTyped() != nullptr) {
3225 type.shallowCopy(node->getAsTyped()->getType());
3226 type.getQualifier().makeTemporary();
3227 type.getQualifier().nonUniform = true;
3232 type.shallowCopy(function.getType());
3236 TString constructorString;
3237 if (intermediate.getEnhancedMsgs())
3238 constructorString.append(type.getCompleteString(true, false, false, true)).append(" constructor");
3240 constructorString.append("constructor");
3242 // See if it's a matrix
3243 bool constructingMatrix = false;
3245 case EOpConstructTextureSampler:
3246 return constructorTextureSamplerError(loc, function);
3247 case EOpConstructMat2x2:
3248 case EOpConstructMat2x3:
3249 case EOpConstructMat2x4:
3250 case EOpConstructMat3x2:
3251 case EOpConstructMat3x3:
3252 case EOpConstructMat3x4:
3253 case EOpConstructMat4x2:
3254 case EOpConstructMat4x3:
3255 case EOpConstructMat4x4:
3257 case EOpConstructDMat2x2:
3258 case EOpConstructDMat2x3:
3259 case EOpConstructDMat2x4:
3260 case EOpConstructDMat3x2:
3261 case EOpConstructDMat3x3:
3262 case EOpConstructDMat3x4:
3263 case EOpConstructDMat4x2:
3264 case EOpConstructDMat4x3:
3265 case EOpConstructDMat4x4:
3266 case EOpConstructF16Mat2x2:
3267 case EOpConstructF16Mat2x3:
3268 case EOpConstructF16Mat2x4:
3269 case EOpConstructF16Mat3x2:
3270 case EOpConstructF16Mat3x3:
3271 case EOpConstructF16Mat3x4:
3272 case EOpConstructF16Mat4x2:
3273 case EOpConstructF16Mat4x3:
3274 case EOpConstructF16Mat4x4:
3276 constructingMatrix = true;
3283 // Walk the arguments for first-pass checks and collection of information.
3287 bool constType = true;
3288 bool specConstType = false; // value is only valid if constType is true
3290 bool overFull = false;
3291 bool matrixInMatrix = false;
3292 bool arrayArg = false;
3293 bool floatArgument = false;
3294 bool intArgument = false;
3295 for (int arg = 0; arg < function.getParamCount(); ++arg) {
3296 if (function[arg].type->isArray()) {
3297 if (function[arg].type->isUnsizedArray()) {
3298 // Can't construct from an unsized array.
3299 error(loc, "array argument must be sized", constructorString.c_str(), "");
3304 if (constructingMatrix && function[arg].type->isMatrix())
3305 matrixInMatrix = true;
3307 // 'full' will go to true when enough args have been seen. If we loop
3308 // again, there is an extra argument.
3310 // For vectors and matrices, it's okay to have too many components
3311 // available, but not okay to have unused arguments.
3315 size += function[arg].type->computeNumComponents();
3316 if (op != EOpConstructStruct && ! type.isArray() && size >= type.computeNumComponents())
3319 if (! function[arg].type->getQualifier().isConstant())
3321 if (function[arg].type->getQualifier().isSpecConstant())
3322 specConstType = true;
3323 if (function[arg].type->isFloatingDomain())
3324 floatArgument = true;
3325 if (function[arg].type->isIntegerDomain())
3327 if (type.isStruct()) {
3328 if (function[arg].type->contains16BitFloat()) {
3329 requireFloat16Arithmetic(loc, constructorString.c_str(), "can't construct structure containing 16-bit type");
3331 if (function[arg].type->contains16BitInt()) {
3332 requireInt16Arithmetic(loc, constructorString.c_str(), "can't construct structure containing 16-bit type");
3334 if (function[arg].type->contains8BitInt()) {
3335 requireInt8Arithmetic(loc, constructorString.c_str(), "can't construct structure containing 8-bit type");
3339 if (op == EOpConstructNonuniform)
3344 case EOpConstructFloat16:
3345 case EOpConstructF16Vec2:
3346 case EOpConstructF16Vec3:
3347 case EOpConstructF16Vec4:
3349 requireFloat16Arithmetic(loc, constructorString.c_str(), "16-bit arrays not supported");
3350 if (type.isVector() && function.getParamCount() != 1)
3351 requireFloat16Arithmetic(loc, constructorString.c_str(), "16-bit vectors only take vector types");
3353 case EOpConstructUint16:
3354 case EOpConstructU16Vec2:
3355 case EOpConstructU16Vec3:
3356 case EOpConstructU16Vec4:
3357 case EOpConstructInt16:
3358 case EOpConstructI16Vec2:
3359 case EOpConstructI16Vec3:
3360 case EOpConstructI16Vec4:
3362 requireInt16Arithmetic(loc, constructorString.c_str(), "16-bit arrays not supported");
3363 if (type.isVector() && function.getParamCount() != 1)
3364 requireInt16Arithmetic(loc, constructorString.c_str(), "16-bit vectors only take vector types");
3366 case EOpConstructUint8:
3367 case EOpConstructU8Vec2:
3368 case EOpConstructU8Vec3:
3369 case EOpConstructU8Vec4:
3370 case EOpConstructInt8:
3371 case EOpConstructI8Vec2:
3372 case EOpConstructI8Vec3:
3373 case EOpConstructI8Vec4:
3375 requireInt8Arithmetic(loc, constructorString.c_str(), "8-bit arrays not supported");
3376 if (type.isVector() && function.getParamCount() != 1)
3377 requireInt8Arithmetic(loc, constructorString.c_str(), "8-bit vectors only take vector types");
3384 // inherit constness from children
3387 // Finish pinning down spec-const semantics
3388 if (specConstType) {
3390 case EOpConstructInt8:
3391 case EOpConstructInt:
3392 case EOpConstructUint:
3393 case EOpConstructBool:
3394 case EOpConstructBVec2:
3395 case EOpConstructBVec3:
3396 case EOpConstructBVec4:
3397 case EOpConstructIVec2:
3398 case EOpConstructIVec3:
3399 case EOpConstructIVec4:
3400 case EOpConstructUVec2:
3401 case EOpConstructUVec3:
3402 case EOpConstructUVec4:
3404 case EOpConstructUint8:
3405 case EOpConstructInt16:
3406 case EOpConstructUint16:
3407 case EOpConstructInt64:
3408 case EOpConstructUint64:
3409 case EOpConstructI8Vec2:
3410 case EOpConstructI8Vec3:
3411 case EOpConstructI8Vec4:
3412 case EOpConstructU8Vec2:
3413 case EOpConstructU8Vec3:
3414 case EOpConstructU8Vec4:
3415 case EOpConstructI16Vec2:
3416 case EOpConstructI16Vec3:
3417 case EOpConstructI16Vec4:
3418 case EOpConstructU16Vec2:
3419 case EOpConstructU16Vec3:
3420 case EOpConstructU16Vec4:
3421 case EOpConstructI64Vec2:
3422 case EOpConstructI64Vec3:
3423 case EOpConstructI64Vec4:
3424 case EOpConstructU64Vec2:
3425 case EOpConstructU64Vec3:
3426 case EOpConstructU64Vec4:
3428 // This was the list of valid ones, if they aren't converting from float
3429 // and aren't making an array.
3430 makeSpecConst = ! floatArgument && ! type.isArray();
3433 case EOpConstructVec2:
3434 case EOpConstructVec3:
3435 case EOpConstructVec4:
3436 // This was the list of valid ones, if they aren't converting from int
3437 // and aren't making an array.
3438 makeSpecConst = ! intArgument && !type.isArray();
3442 // anything else wasn't white-listed in the spec as a conversion
3443 makeSpecConst = false;
3447 makeSpecConst = false;
3450 type.getQualifier().makeSpecConstant();
3451 else if (specConstType)
3452 type.getQualifier().makeTemporary();
3454 type.getQualifier().storage = EvqConst;
3457 if (type.isArray()) {
3458 if (function.getParamCount() == 0) {
3459 error(loc, "array constructor must have at least one argument", constructorString.c_str(), "");
3463 if (type.isUnsizedArray()) {
3464 // auto adapt the constructor type to the number of arguments
3465 type.changeOuterArraySize(function.getParamCount());
3466 } else if (type.getOuterArraySize() != function.getParamCount()) {
3467 error(loc, "array constructor needs one argument per array element", constructorString.c_str(), "");
3471 if (type.isArrayOfArrays()) {
3472 // Types have to match, but we're still making the type.
3473 // Finish making the type, and the comparison is done later
3474 // when checking for conversion.
3475 TArraySizes& arraySizes = *type.getArraySizes();
3477 // At least the dimensionalities have to match.
3478 if (! function[0].type->isArray() ||
3479 arraySizes.getNumDims() != function[0].type->getArraySizes()->getNumDims() + 1) {
3480 error(loc, "array constructor argument not correct type to construct array element", constructorString.c_str(), "");
3484 if (arraySizes.isInnerUnsized()) {
3485 // "Arrays of arrays ..., and the size for any dimension is optional"
3486 // That means we need to adopt (from the first argument) the other array sizes into the type.
3487 for (int d = 1; d < arraySizes.getNumDims(); ++d) {
3488 if (arraySizes.getDimSize(d) == UnsizedArraySize) {
3489 arraySizes.setDimSize(d, function[0].type->getArraySizes()->getDimSize(d - 1));
3496 if (arrayArg && op != EOpConstructStruct && ! type.isArrayOfArrays()) {
3497 error(loc, "constructing non-array constituent from array argument", constructorString.c_str(), "");
3501 if (matrixInMatrix && ! type.isArray()) {
3502 profileRequires(loc, ENoProfile, 120, nullptr, "constructing matrix from matrix");
3504 // "If a matrix argument is given to a matrix constructor,
3505 // it is a compile-time error to have any other arguments."
3506 if (function.getParamCount() != 1)
3507 error(loc, "matrix constructed from matrix can only have one argument", constructorString.c_str(), "");
3512 error(loc, "too many arguments", constructorString.c_str(), "");
3516 if (op == EOpConstructStruct && ! type.isArray() && (int)type.getStruct()->size() != function.getParamCount()) {
3517 error(loc, "Number of constructor parameters does not match the number of structure fields", constructorString.c_str(), "");
3521 if ((op != EOpConstructStruct && size != 1 && size < type.computeNumComponents()) ||
3522 (op == EOpConstructStruct && size < type.computeNumComponents())) {
3523 error(loc, "not enough data provided for construction", constructorString.c_str(), "");
3527 if (type.isCoopMat() && function.getParamCount() != 1) {
3528 error(loc, "wrong number of arguments", constructorString.c_str(), "");
3531 if (type.isCoopMat() &&
3532 !(function[0].type->isScalar() || function[0].type->isCoopMat())) {
3533 error(loc, "Cooperative matrix constructor argument must be scalar or cooperative matrix", constructorString.c_str(), "");
3537 TIntermTyped* typed = node->getAsTyped();
3538 if (typed == nullptr) {
3539 error(loc, "constructor argument does not have a type", constructorString.c_str(), "");
3542 if (op != EOpConstructStruct && op != EOpConstructNonuniform && typed->getBasicType() == EbtSampler) {
3543 error(loc, "cannot convert a sampler", constructorString.c_str(), "");
3546 if (op != EOpConstructStruct && typed->isAtomic()) {
3547 error(loc, "cannot convert an atomic_uint", constructorString.c_str(), "");
3550 if (typed->getBasicType() == EbtVoid) {
3551 error(loc, "cannot convert a void", constructorString.c_str(), "");
3558 // Verify all the correct semantics for constructing a combined texture/sampler.
3559 // Return true if the semantics are incorrect.
3560 bool TParseContext::constructorTextureSamplerError(const TSourceLoc& loc, const TFunction& function)
3562 TString constructorName = function.getType().getBasicTypeString(); // TODO: performance: should not be making copy; interface needs to change
3563 const char* token = constructorName.c_str();
3565 // exactly two arguments needed
3566 if (function.getParamCount() != 2) {
3567 error(loc, "sampler-constructor requires two arguments", token, "");
3571 // For now, not allowing arrayed constructors, the rest of this function
3572 // is set up to allow them, if this test is removed:
3573 if (function.getType().isArray()) {
3574 error(loc, "sampler-constructor cannot make an array of samplers", token, "");
3579 // * the constructor's first argument must be a texture type
3580 // * the dimensionality (1D, 2D, 3D, Cube, Rect, Buffer, MS, and Array)
3581 // of the texture type must match that of the constructed sampler type
3582 // (that is, the suffixes of the type of the first argument and the
3583 // type of the constructor will be spelled the same way)
3584 if (function[0].type->getBasicType() != EbtSampler ||
3585 ! function[0].type->getSampler().isTexture() ||
3586 function[0].type->isArray()) {
3587 error(loc, "sampler-constructor first argument must be a scalar *texture* type", token, "");
3590 // simulate the first argument's impact on the result type, so it can be compared with the encapsulated operator!=()
3591 TSampler texture = function.getType().getSampler();
3592 texture.setCombined(false);
3593 texture.shadow = false;
3594 if (texture != function[0].type->getSampler()) {
3595 error(loc, "sampler-constructor first argument must be a *texture* type"
3596 " matching the dimensionality and sampled type of the constructor", token, "");
3601 // * the constructor's second argument must be a scalar of type
3602 // *sampler* or *samplerShadow*
3603 if ( function[1].type->getBasicType() != EbtSampler ||
3604 ! function[1].type->getSampler().isPureSampler() ||
3605 function[1].type->isArray()) {
3606 error(loc, "sampler-constructor second argument must be a scalar sampler or samplerShadow", token, "");
3613 // Checks to see if a void variable has been declared and raise an error message for such a case
3615 // returns true in case of an error
3617 bool TParseContext::voidErrorCheck(const TSourceLoc& loc, const TString& identifier, const TBasicType basicType)
3619 if (basicType == EbtVoid) {
3620 error(loc, "illegal use of type 'void'", identifier.c_str(), "");
3627 // Checks to see if the node (for the expression) contains a scalar boolean expression or not
3628 void TParseContext::boolCheck(const TSourceLoc& loc, const TIntermTyped* type)
3630 if (type->getBasicType() != EbtBool || type->isArray() || type->isMatrix() || type->isVector())
3631 error(loc, "boolean expression expected", "", "");
3634 // This function checks to see if the node (for the expression) contains a scalar boolean expression or not
3635 void TParseContext::boolCheck(const TSourceLoc& loc, const TPublicType& pType)
3637 if (pType.basicType != EbtBool || pType.arraySizes || pType.matrixCols > 1 || (pType.vectorSize > 1))
3638 error(loc, "boolean expression expected", "", "");
3641 void TParseContext::samplerCheck(const TSourceLoc& loc, const TType& type, const TString& identifier, TIntermTyped* /*initializer*/)
3643 // Check that the appropriate extension is enabled if external sampler is used.
3644 // There are two extensions. The correct one must be used based on GLSL version.
3645 if (type.getBasicType() == EbtSampler && type.getSampler().isExternal()) {
3646 if (version < 300) {
3647 requireExtensions(loc, 1, &E_GL_OES_EGL_image_external, "samplerExternalOES");
3649 requireExtensions(loc, 1, &E_GL_OES_EGL_image_external_essl3, "samplerExternalOES");
3652 if (type.getSampler().isYuv()) {
3653 requireExtensions(loc, 1, &E_GL_EXT_YUV_target, "__samplerExternal2DY2YEXT");
3656 if (type.getQualifier().storage == EvqUniform)
3659 if (type.getBasicType() == EbtStruct && containsFieldWithBasicType(type, EbtSampler))
3660 error(loc, "non-uniform struct contains a sampler or image:", type.getBasicTypeString().c_str(), identifier.c_str());
3661 else if (type.getBasicType() == EbtSampler && type.getQualifier().storage != EvqUniform) {
3662 // non-uniform sampler
3663 // not yet: okay if it has an initializer
3664 // if (! initializer)
3665 error(loc, "sampler/image types can only be used in uniform variables or function parameters:", type.getBasicTypeString().c_str(), identifier.c_str());
3671 void TParseContext::atomicUintCheck(const TSourceLoc& loc, const TType& type, const TString& identifier)
3673 if (type.getQualifier().storage == EvqUniform)
3676 if (type.getBasicType() == EbtStruct && containsFieldWithBasicType(type, EbtAtomicUint))
3677 error(loc, "non-uniform struct contains an atomic_uint:", type.getBasicTypeString().c_str(), identifier.c_str());
3678 else if (type.getBasicType() == EbtAtomicUint && type.getQualifier().storage != EvqUniform)
3679 error(loc, "atomic_uints can only be used in uniform variables or function parameters:", type.getBasicTypeString().c_str(), identifier.c_str());
3682 void TParseContext::accStructCheck(const TSourceLoc& loc, const TType& type, const TString& identifier)
3684 if (type.getQualifier().storage == EvqUniform)
3687 if (type.getBasicType() == EbtStruct && containsFieldWithBasicType(type, EbtAccStruct))
3688 error(loc, "non-uniform struct contains an accelerationStructureNV:", type.getBasicTypeString().c_str(), identifier.c_str());
3689 else if (type.getBasicType() == EbtAccStruct && type.getQualifier().storage != EvqUniform)
3690 error(loc, "accelerationStructureNV can only be used in uniform variables or function parameters:",
3691 type.getBasicTypeString().c_str(), identifier.c_str());
3695 #endif // GLSLANG_WEB
3697 void TParseContext::transparentOpaqueCheck(const TSourceLoc& loc, const TType& type, const TString& identifier)
3699 if (parsingBuiltins)
3702 if (type.getQualifier().storage != EvqUniform)
3705 if (type.containsNonOpaque()) {
3706 // Vulkan doesn't allow transparent uniforms outside of blocks
3707 if (spvVersion.vulkan > 0 && !spvVersion.vulkanRelaxed)
3708 vulkanRemoved(loc, "non-opaque uniforms outside a block");
3709 // OpenGL wants locations on these (unless they are getting automapped)
3710 if (spvVersion.openGl > 0 && !type.getQualifier().hasLocation() && !intermediate.getAutoMapLocations())
3711 error(loc, "non-opaque uniform variables need a layout(location=L)", identifier.c_str(), "");
3716 // Qualifier checks knowing the qualifier and that it is a member of a struct/block.
3718 void TParseContext::memberQualifierCheck(glslang::TPublicType& publicType)
3720 globalQualifierFixCheck(publicType.loc, publicType.qualifier, true);
3721 checkNoShaderLayouts(publicType.loc, publicType.shaderQualifiers);
3722 if (publicType.qualifier.isNonUniform()) {
3723 error(publicType.loc, "not allowed on block or structure members", "nonuniformEXT", "");
3724 publicType.qualifier.nonUniform = false;
3729 // Check/fix just a full qualifier (no variables or types yet, but qualifier is complete) at global level.
3731 void TParseContext::globalQualifierFixCheck(const TSourceLoc& loc, TQualifier& qualifier, bool isMemberCheck)
3733 bool nonuniformOkay = false;
3735 // move from parameter/unknown qualifiers to pipeline in/out qualifiers
3736 switch (qualifier.storage) {
3738 profileRequires(loc, ENoProfile, 130, nullptr, "in for stage inputs");
3739 profileRequires(loc, EEsProfile, 300, nullptr, "in for stage inputs");
3740 qualifier.storage = EvqVaryingIn;
3741 nonuniformOkay = true;
3744 profileRequires(loc, ENoProfile, 130, nullptr, "out for stage outputs");
3745 profileRequires(loc, EEsProfile, 300, nullptr, "out for stage outputs");
3746 qualifier.storage = EvqVaryingOut;
3747 if (intermediate.isInvariantAll())
3748 qualifier.invariant = true;
3751 qualifier.storage = EvqVaryingIn;
3752 error(loc, "cannot use 'inout' at global scope", "", "");
3756 nonuniformOkay = true;
3759 // According to GLSL spec: The std430 qualifier is supported only for shader storage blocks; a shader using
3760 // the std430 qualifier on a uniform block will fail to compile.
3761 // Only check the global declaration: layout(std430) uniform;
3762 if (blockName == nullptr &&
3763 qualifier.layoutPacking == ElpStd430)
3765 requireExtensions(loc, 1, &E_GL_EXT_scalar_block_layout, "default std430 layout for uniform");
3772 if (!nonuniformOkay && qualifier.isNonUniform())
3773 error(loc, "for non-parameter, can only apply to 'in' or no storage qualifier", "nonuniformEXT", "");
3776 if (qualifier.isSpirvByReference())
3777 error(loc, "can only apply to parameter", "spirv_by_reference", "");
3779 if (qualifier.isSpirvLiteral())
3780 error(loc, "can only apply to parameter", "spirv_literal", "");
3783 // Storage qualifier isn't ready for memberQualifierCheck, we should skip invariantCheck for it.
3784 if (!isMemberCheck || structNestingLevel > 0)
3785 invariantCheck(loc, qualifier);
3789 // Check a full qualifier and type (no variable yet) at global level.
3791 void TParseContext::globalQualifierTypeCheck(const TSourceLoc& loc, const TQualifier& qualifier, const TPublicType& publicType)
3793 if (! symbolTable.atGlobalLevel())
3796 if (!(publicType.userDef && publicType.userDef->isReference()) && !parsingBuiltins) {
3797 if (qualifier.isMemoryQualifierImageAndSSBOOnly() && ! publicType.isImage() && publicType.qualifier.storage != EvqBuffer) {
3798 error(loc, "memory qualifiers cannot be used on this type", "", "");
3799 } else if (qualifier.isMemory() && (publicType.basicType != EbtSampler) && !publicType.qualifier.isUniformOrBuffer()) {
3800 error(loc, "memory qualifiers cannot be used on this type", "", "");
3804 if (qualifier.storage == EvqBuffer &&
3805 publicType.basicType != EbtBlock &&
3806 !qualifier.hasBufferReference())
3807 error(loc, "buffers can be declared only as blocks", "buffer", "");
3809 if (qualifier.storage != EvqVaryingIn && publicType.basicType == EbtDouble &&
3810 extensionTurnedOn(E_GL_ARB_vertex_attrib_64bit) && language == EShLangVertex &&
3812 profileRequires(loc, ECoreProfile | ECompatibilityProfile, 410, E_GL_ARB_gpu_shader_fp64, "vertex-shader `double` type");
3814 if (qualifier.storage != EvqVaryingIn && qualifier.storage != EvqVaryingOut)
3817 if (publicType.shaderQualifiers.hasBlendEquation())
3818 error(loc, "can only be applied to a standalone 'out'", "blend equation", "");
3820 // now, knowing it is a shader in/out, do all the in/out semantic checks
3822 if (publicType.basicType == EbtBool && !parsingBuiltins) {
3823 error(loc, "cannot be bool", GetStorageQualifierString(qualifier.storage), "");
3827 if (isTypeInt(publicType.basicType) || publicType.basicType == EbtDouble)
3828 profileRequires(loc, EEsProfile, 300, nullptr, "shader input/output");
3830 if (!qualifier.flat && !qualifier.isExplicitInterpolation() && !qualifier.isPervertexNV() && !qualifier.isPervertexEXT()) {
3831 if (isTypeInt(publicType.basicType) ||
3832 publicType.basicType == EbtDouble ||
3833 (publicType.userDef && ( publicType.userDef->containsBasicType(EbtInt)
3834 || publicType.userDef->containsBasicType(EbtUint)
3835 || publicType.userDef->contains16BitInt()
3836 || publicType.userDef->contains8BitInt()
3837 || publicType.userDef->contains64BitInt()
3838 || publicType.userDef->containsDouble()))) {
3839 if (qualifier.storage == EvqVaryingIn && language == EShLangFragment)
3840 error(loc, "must be qualified as flat", TType::getBasicString(publicType.basicType), GetStorageQualifierString(qualifier.storage));
3841 else if (qualifier.storage == EvqVaryingOut && language == EShLangVertex && version == 300)
3842 error(loc, "must be qualified as flat", TType::getBasicString(publicType.basicType), GetStorageQualifierString(qualifier.storage));
3846 if (qualifier.isPatch() && qualifier.isInterpolation())
3847 error(loc, "cannot use interpolation qualifiers with patch", "patch", "");
3849 if (qualifier.isTaskPayload() && publicType.basicType == EbtBlock)
3850 error(loc, "taskPayloadSharedEXT variables should not be declared as interface blocks", "taskPayloadSharedEXT", "");
3852 if (qualifier.isTaskMemory() && publicType.basicType != EbtBlock)
3853 error(loc, "taskNV variables can be declared only as blocks", "taskNV", "");
3855 if (qualifier.storage == EvqVaryingIn) {
3858 if (publicType.basicType == EbtStruct) {
3859 error(loc, "cannot be a structure or array", GetStorageQualifierString(qualifier.storage), "");
3862 if (publicType.arraySizes) {
3863 requireProfile(loc, ~EEsProfile, "vertex input arrays");
3864 profileRequires(loc, ENoProfile, 150, nullptr, "vertex input arrays");
3866 if (publicType.basicType == EbtDouble)
3867 profileRequires(loc, ~EEsProfile, 410, E_GL_ARB_vertex_attrib_64bit, "vertex-shader `double` type input");
3868 if (qualifier.isAuxiliary() || qualifier.isInterpolation() || qualifier.isMemory() || qualifier.invariant)
3869 error(loc, "vertex input cannot be further qualified", "", "");
3871 case EShLangFragment:
3872 if (publicType.userDef) {
3873 profileRequires(loc, EEsProfile, 300, nullptr, "fragment-shader struct input");
3874 profileRequires(loc, ~EEsProfile, 150, nullptr, "fragment-shader struct input");
3875 if (publicType.userDef->containsStructure())
3876 requireProfile(loc, ~EEsProfile, "fragment-shader struct input containing structure");
3877 if (publicType.userDef->containsArray())
3878 requireProfile(loc, ~EEsProfile, "fragment-shader struct input containing an array");
3881 case EShLangCompute:
3882 if (! symbolTable.atBuiltInLevel())
3883 error(loc, "global storage input qualifier cannot be used in a compute shader", "in", "");
3886 case EShLangTessControl:
3887 if (qualifier.patch)
3888 error(loc, "can only use on output in tessellation-control shader", "patch", "");
3895 // qualifier.storage == EvqVaryingOut
3898 if (publicType.userDef) {
3899 profileRequires(loc, EEsProfile, 300, nullptr, "vertex-shader struct output");
3900 profileRequires(loc, ~EEsProfile, 150, nullptr, "vertex-shader struct output");
3901 if (publicType.userDef->containsStructure())
3902 requireProfile(loc, ~EEsProfile, "vertex-shader struct output containing structure");
3903 if (publicType.userDef->containsArray())
3904 requireProfile(loc, ~EEsProfile, "vertex-shader struct output containing an array");
3908 case EShLangFragment:
3909 profileRequires(loc, EEsProfile, 300, nullptr, "fragment shader output");
3910 if (publicType.basicType == EbtStruct) {
3911 error(loc, "cannot be a structure", GetStorageQualifierString(qualifier.storage), "");
3914 if (publicType.matrixRows > 0) {
3915 error(loc, "cannot be a matrix", GetStorageQualifierString(qualifier.storage), "");
3918 if (qualifier.isAuxiliary())
3919 error(loc, "can't use auxiliary qualifier on a fragment output", "centroid/sample/patch", "");
3920 if (qualifier.isInterpolation())
3921 error(loc, "can't use interpolation qualifier on a fragment output", "flat/smooth/noperspective", "");
3922 if (publicType.basicType == EbtDouble || publicType.basicType == EbtInt64 || publicType.basicType == EbtUint64)
3923 error(loc, "cannot contain a double, int64, or uint64", GetStorageQualifierString(qualifier.storage), "");
3926 case EShLangCompute:
3927 error(loc, "global storage output qualifier cannot be used in a compute shader", "out", "");
3930 case EShLangTessEvaluation:
3931 if (qualifier.patch)
3932 error(loc, "can only use on input in tessellation-evaluation shader", "patch", "");
3942 // Merge characteristics of the 'src' qualifier into the 'dst'.
3943 // If there is duplication, issue error messages, unless 'force'
3944 // is specified, which means to just override default settings.
3946 // Also, when force is false, it will be assumed that 'src' follows
3947 // 'dst', for the purpose of error checking order for versions
3948 // that require specific orderings of qualifiers.
3950 void TParseContext::mergeQualifiers(const TSourceLoc& loc, TQualifier& dst, const TQualifier& src, bool force)
3952 // Multiple auxiliary qualifiers (mostly done later by 'individual qualifiers')
3953 if (src.isAuxiliary() && dst.isAuxiliary())
3954 error(loc, "can only have one auxiliary qualifier (centroid, patch, and sample)", "", "");
3956 // Multiple interpolation qualifiers (mostly done later by 'individual qualifiers')
3957 if (src.isInterpolation() && dst.isInterpolation())
3958 error(loc, "can only have one interpolation qualifier (flat, smooth, noperspective, __explicitInterpAMD)", "", "");
3961 if (! force && ((!isEsProfile() && version < 420) ||
3962 (isEsProfile() && version < 310))
3963 && ! extensionTurnedOn(E_GL_ARB_shading_language_420pack)) {
3964 // non-function parameters
3965 if (src.isNoContraction() && (dst.invariant || dst.isInterpolation() || dst.isAuxiliary() || dst.storage != EvqTemporary || dst.precision != EpqNone))
3966 error(loc, "precise qualifier must appear first", "", "");
3967 if (src.invariant && (dst.isInterpolation() || dst.isAuxiliary() || dst.storage != EvqTemporary || dst.precision != EpqNone))
3968 error(loc, "invariant qualifier must appear before interpolation, storage, and precision qualifiers ", "", "");
3969 else if (src.isInterpolation() && (dst.isAuxiliary() || dst.storage != EvqTemporary || dst.precision != EpqNone))
3970 error(loc, "interpolation qualifiers must appear before storage and precision qualifiers", "", "");
3971 else if (src.isAuxiliary() && (dst.storage != EvqTemporary || dst.precision != EpqNone))
3972 error(loc, "Auxiliary qualifiers (centroid, patch, and sample) must appear before storage and precision qualifiers", "", "");
3973 else if (src.storage != EvqTemporary && (dst.precision != EpqNone))
3974 error(loc, "precision qualifier must appear as last qualifier", "", "");
3976 // function parameters
3977 if (src.isNoContraction() && (dst.storage == EvqConst || dst.storage == EvqIn || dst.storage == EvqOut))
3978 error(loc, "precise qualifier must appear first", "", "");
3979 if (src.storage == EvqConst && (dst.storage == EvqIn || dst.storage == EvqOut))
3980 error(loc, "in/out must appear before const", "", "");
3983 // Storage qualification
3984 if (dst.storage == EvqTemporary || dst.storage == EvqGlobal)
3985 dst.storage = src.storage;
3986 else if ((dst.storage == EvqIn && src.storage == EvqOut) ||
3987 (dst.storage == EvqOut && src.storage == EvqIn))
3988 dst.storage = EvqInOut;
3989 else if ((dst.storage == EvqIn && src.storage == EvqConst) ||
3990 (dst.storage == EvqConst && src.storage == EvqIn))
3991 dst.storage = EvqConstReadOnly;
3992 else if (src.storage != EvqTemporary &&
3993 src.storage != EvqGlobal)
3994 error(loc, "too many storage qualifiers", GetStorageQualifierString(src.storage), "");
3996 // Precision qualifiers
3997 if (! force && src.precision != EpqNone && dst.precision != EpqNone)
3998 error(loc, "only one precision qualifier allowed", GetPrecisionQualifierString(src.precision), "");
3999 if (dst.precision == EpqNone || (force && src.precision != EpqNone))
4000 dst.precision = src.precision;
4003 if (!force && ((src.coherent && (dst.devicecoherent || dst.queuefamilycoherent || dst.workgroupcoherent || dst.subgroupcoherent || dst.shadercallcoherent)) ||
4004 (src.devicecoherent && (dst.coherent || dst.queuefamilycoherent || dst.workgroupcoherent || dst.subgroupcoherent || dst.shadercallcoherent)) ||
4005 (src.queuefamilycoherent && (dst.coherent || dst.devicecoherent || dst.workgroupcoherent || dst.subgroupcoherent || dst.shadercallcoherent)) ||
4006 (src.workgroupcoherent && (dst.coherent || dst.devicecoherent || dst.queuefamilycoherent || dst.subgroupcoherent || dst.shadercallcoherent)) ||
4007 (src.subgroupcoherent && (dst.coherent || dst.devicecoherent || dst.queuefamilycoherent || dst.workgroupcoherent || dst.shadercallcoherent)) ||
4008 (src.shadercallcoherent && (dst.coherent || dst.devicecoherent || dst.queuefamilycoherent || dst.workgroupcoherent || dst.subgroupcoherent)))) {
4009 error(loc, "only one coherent/devicecoherent/queuefamilycoherent/workgroupcoherent/subgroupcoherent/shadercallcoherent qualifier allowed",
4010 GetPrecisionQualifierString(src.precision), "");
4013 // Layout qualifiers
4014 mergeObjectLayoutQualifiers(dst, src, false);
4016 // individual qualifiers
4017 bool repeated = false;
4018 #define MERGE_SINGLETON(field) repeated |= dst.field && src.field; dst.field |= src.field;
4019 MERGE_SINGLETON(invariant);
4020 MERGE_SINGLETON(centroid);
4021 MERGE_SINGLETON(smooth);
4022 MERGE_SINGLETON(flat);
4023 MERGE_SINGLETON(specConstant);
4025 MERGE_SINGLETON(noContraction);
4026 MERGE_SINGLETON(nopersp);
4027 MERGE_SINGLETON(explicitInterp);
4028 MERGE_SINGLETON(perPrimitiveNV);
4029 MERGE_SINGLETON(perViewNV);
4030 MERGE_SINGLETON(perTaskNV);
4031 MERGE_SINGLETON(patch);
4032 MERGE_SINGLETON(sample);
4033 MERGE_SINGLETON(coherent);
4034 MERGE_SINGLETON(devicecoherent);
4035 MERGE_SINGLETON(queuefamilycoherent);
4036 MERGE_SINGLETON(workgroupcoherent);
4037 MERGE_SINGLETON(subgroupcoherent);
4038 MERGE_SINGLETON(shadercallcoherent);
4039 MERGE_SINGLETON(nonprivate);
4040 MERGE_SINGLETON(volatil);
4041 MERGE_SINGLETON(restrict);
4042 MERGE_SINGLETON(readonly);
4043 MERGE_SINGLETON(writeonly);
4044 MERGE_SINGLETON(nonUniform);
4048 // SPIR-V storage class qualifier (GL_EXT_spirv_intrinsics)
4049 dst.spirvStorageClass = src.spirvStorageClass;
4051 // SPIR-V decorate qualifiers (GL_EXT_spirv_intrinsics)
4052 if (src.hasSprivDecorate()) {
4053 if (dst.hasSprivDecorate()) {
4054 const TSpirvDecorate& srcSpirvDecorate = src.getSpirvDecorate();
4055 TSpirvDecorate& dstSpirvDecorate = dst.getSpirvDecorate();
4056 for (auto& decorate : srcSpirvDecorate.decorates) {
4057 if (dstSpirvDecorate.decorates.find(decorate.first) != dstSpirvDecorate.decorates.end())
4058 error(loc, "too many SPIR-V decorate qualifiers", "spirv_decorate", "(decoration=%u)", decorate.first);
4060 dstSpirvDecorate.decorates.insert(decorate);
4063 for (auto& decorateId : srcSpirvDecorate.decorateIds) {
4064 if (dstSpirvDecorate.decorateIds.find(decorateId.first) != dstSpirvDecorate.decorateIds.end())
4065 error(loc, "too many SPIR-V decorate qualifiers", "spirv_decorate_id", "(decoration=%u)", decorateId.first);
4067 dstSpirvDecorate.decorateIds.insert(decorateId);
4070 for (auto& decorateString : srcSpirvDecorate.decorateStrings) {
4071 if (dstSpirvDecorate.decorates.find(decorateString.first) != dstSpirvDecorate.decorates.end())
4072 error(loc, "too many SPIR-V decorate qualifiers", "spirv_decorate_string", "(decoration=%u)", decorateString.first);
4074 dstSpirvDecorate.decorates.insert(decorateString);
4077 dst.spirvDecorate = src.spirvDecorate;
4083 error(loc, "replicated qualifiers", "", "");
4086 void TParseContext::setDefaultPrecision(const TSourceLoc& loc, TPublicType& publicType, TPrecisionQualifier qualifier)
4088 TBasicType basicType = publicType.basicType;
4090 if (basicType == EbtSampler) {
4091 defaultSamplerPrecision[computeSamplerTypeIndex(publicType.sampler)] = qualifier;
4093 return; // all is well
4096 if (basicType == EbtInt || basicType == EbtFloat) {
4097 if (publicType.isScalar()) {
4098 defaultPrecision[basicType] = qualifier;
4099 if (basicType == EbtInt) {
4100 defaultPrecision[EbtUint] = qualifier;
4101 precisionManager.explicitIntDefaultSeen();
4103 precisionManager.explicitFloatDefaultSeen();
4105 return; // all is well
4109 if (basicType == EbtAtomicUint) {
4110 if (qualifier != EpqHigh)
4111 error(loc, "can only apply highp to atomic_uint", "precision", "");
4116 error(loc, "cannot apply precision statement to this type; use 'float', 'int' or a sampler type", TType::getBasicString(basicType), "");
4119 // used to flatten the sampler type space into a single dimension
4120 // correlates with the declaration of defaultSamplerPrecision[]
4121 int TParseContext::computeSamplerTypeIndex(TSampler& sampler)
4123 int arrayIndex = sampler.arrayed ? 1 : 0;
4124 int shadowIndex = sampler.shadow ? 1 : 0;
4125 int externalIndex = sampler.isExternal() ? 1 : 0;
4126 int imageIndex = sampler.isImageClass() ? 1 : 0;
4127 int msIndex = sampler.isMultiSample() ? 1 : 0;
4129 int flattened = EsdNumDims * (EbtNumTypes * (2 * (2 * (2 * (2 * arrayIndex + msIndex) + imageIndex) + shadowIndex) +
4130 externalIndex) + sampler.type) + sampler.dim;
4131 assert(flattened < maxSamplerIndex);
4136 TPrecisionQualifier TParseContext::getDefaultPrecision(TPublicType& publicType)
4138 if (publicType.basicType == EbtSampler)
4139 return defaultSamplerPrecision[computeSamplerTypeIndex(publicType.sampler)];
4141 return defaultPrecision[publicType.basicType];
4144 void TParseContext::precisionQualifierCheck(const TSourceLoc& loc, TBasicType baseType, TQualifier& qualifier)
4146 // Built-in symbols are allowed some ambiguous precisions, to be pinned down
4147 // later by context.
4148 if (! obeyPrecisionQualifiers() || parsingBuiltins)
4152 if (baseType == EbtAtomicUint && qualifier.precision != EpqNone && qualifier.precision != EpqHigh)
4153 error(loc, "atomic counters can only be highp", "atomic_uint", "");
4156 if (baseType == EbtFloat || baseType == EbtUint || baseType == EbtInt || baseType == EbtSampler || baseType == EbtAtomicUint) {
4157 if (qualifier.precision == EpqNone) {
4158 if (relaxedErrors())
4159 warn(loc, "type requires declaration of default precision qualifier", TType::getBasicString(baseType), "substituting 'mediump'");
4161 error(loc, "type requires declaration of default precision qualifier", TType::getBasicString(baseType), "");
4162 qualifier.precision = EpqMedium;
4163 defaultPrecision[baseType] = EpqMedium;
4165 } else if (qualifier.precision != EpqNone)
4166 error(loc, "type cannot have precision qualifier", TType::getBasicString(baseType), "");
4169 void TParseContext::parameterTypeCheck(const TSourceLoc& loc, TStorageQualifier qualifier, const TType& type)
4171 if ((qualifier == EvqOut || qualifier == EvqInOut) && type.isOpaque())
4172 error(loc, "samplers and atomic_uints cannot be output parameters", type.getBasicTypeString().c_str(), "");
4173 if (!parsingBuiltins && type.contains16BitFloat())
4174 requireFloat16Arithmetic(loc, type.getBasicTypeString().c_str(), "float16 types can only be in uniform block or buffer storage");
4175 if (!parsingBuiltins && type.contains16BitInt())
4176 requireInt16Arithmetic(loc, type.getBasicTypeString().c_str(), "(u)int16 types can only be in uniform block or buffer storage");
4177 if (!parsingBuiltins && type.contains8BitInt())
4178 requireInt8Arithmetic(loc, type.getBasicTypeString().c_str(), "(u)int8 types can only be in uniform block or buffer storage");
4181 bool TParseContext::containsFieldWithBasicType(const TType& type, TBasicType basicType)
4183 if (type.getBasicType() == basicType)
4186 if (type.getBasicType() == EbtStruct) {
4187 const TTypeList& structure = *type.getStruct();
4188 for (unsigned int i = 0; i < structure.size(); ++i) {
4189 if (containsFieldWithBasicType(*structure[i].type, basicType))
4198 // Do size checking for an array type's size.
4200 void TParseContext::arraySizeCheck(const TSourceLoc& loc, TIntermTyped* expr, TArraySize& sizePair, const char *sizeType)
4202 bool isConst = false;
4203 sizePair.node = nullptr;
4207 TIntermConstantUnion* constant = expr->getAsConstantUnion();
4209 // handle true (non-specialization) constant
4210 size = constant->getConstArray()[0].getIConst();
4213 // see if it's a specialization constant instead
4214 if (expr->getQualifier().isSpecConstant()) {
4216 sizePair.node = expr;
4217 TIntermSymbol* symbol = expr->getAsSymbolNode();
4218 if (symbol && symbol->getConstArray().size() > 0)
4219 size = symbol->getConstArray()[0].getIConst();
4220 } else if (expr->getAsUnaryNode() &&
4221 expr->getAsUnaryNode()->getOp() == glslang::EOpArrayLength &&
4222 expr->getAsUnaryNode()->getOperand()->getType().isCoopMat()) {
4225 sizePair.node = expr->getAsUnaryNode();
4229 sizePair.size = size;
4231 if (! isConst || (expr->getBasicType() != EbtInt && expr->getBasicType() != EbtUint)) {
4232 error(loc, sizeType, "", "must be a constant integer expression");
4237 error(loc, sizeType, "", "must be a positive integer");
4243 // See if this qualifier can be an array.
4245 // Returns true if there is an error.
4247 bool TParseContext::arrayQualifierError(const TSourceLoc& loc, const TQualifier& qualifier)
4249 if (qualifier.storage == EvqConst) {
4250 profileRequires(loc, ENoProfile, 120, E_GL_3DL_array_objects, "const array");
4251 profileRequires(loc, EEsProfile, 300, nullptr, "const array");
4254 if (qualifier.storage == EvqVaryingIn && language == EShLangVertex) {
4255 requireProfile(loc, ~EEsProfile, "vertex input arrays");
4256 profileRequires(loc, ENoProfile, 150, nullptr, "vertex input arrays");
4263 // See if this qualifier and type combination can be an array.
4264 // Assumes arrayQualifierError() was also called to catch the type-invariant tests.
4266 // Returns true if there is an error.
4268 bool TParseContext::arrayError(const TSourceLoc& loc, const TType& type)
4270 if (type.getQualifier().storage == EvqVaryingOut && language == EShLangVertex) {
4271 if (type.isArrayOfArrays())
4272 requireProfile(loc, ~EEsProfile, "vertex-shader array-of-array output");
4273 else if (type.isStruct())
4274 requireProfile(loc, ~EEsProfile, "vertex-shader array-of-struct output");
4276 if (type.getQualifier().storage == EvqVaryingIn && language == EShLangFragment) {
4277 if (type.isArrayOfArrays())
4278 requireProfile(loc, ~EEsProfile, "fragment-shader array-of-array input");
4279 else if (type.isStruct())
4280 requireProfile(loc, ~EEsProfile, "fragment-shader array-of-struct input");
4282 if (type.getQualifier().storage == EvqVaryingOut && language == EShLangFragment) {
4283 if (type.isArrayOfArrays())
4284 requireProfile(loc, ~EEsProfile, "fragment-shader array-of-array output");
4291 // Require array to be completely sized
4293 void TParseContext::arraySizeRequiredCheck(const TSourceLoc& loc, const TArraySizes& arraySizes)
4295 if (!parsingBuiltins && arraySizes.hasUnsized())
4296 error(loc, "array size required", "", "");
4299 void TParseContext::structArrayCheck(const TSourceLoc& /*loc*/, const TType& type)
4301 const TTypeList& structure = *type.getStruct();
4302 for (int m = 0; m < (int)structure.size(); ++m) {
4303 const TType& member = *structure[m].type;
4304 if (member.isArray())
4305 arraySizeRequiredCheck(structure[m].loc, *member.getArraySizes());
4309 void TParseContext::arraySizesCheck(const TSourceLoc& loc, const TQualifier& qualifier, TArraySizes* arraySizes,
4310 const TIntermTyped* initializer, bool lastMember)
4314 // always allow special built-in ins/outs sized to topologies
4315 if (parsingBuiltins)
4318 // initializer must be a sized array, in which case
4319 // allow the initializer to set any unknown array sizes
4320 if (initializer != nullptr) {
4321 if (initializer->getType().isUnsizedArray())
4322 error(loc, "array initializer must be sized", "[]", "");
4326 // No environment allows any non-outer-dimension to be implicitly sized
4327 if (arraySizes->isInnerUnsized()) {
4328 error(loc, "only outermost dimension of an array of arrays can be implicitly sized", "[]", "");
4329 arraySizes->clearInnerUnsized();
4332 if (arraySizes->isInnerSpecialization() &&
4333 (qualifier.storage != EvqTemporary && qualifier.storage != EvqGlobal && qualifier.storage != EvqShared && qualifier.storage != EvqConst))
4334 error(loc, "only outermost dimension of an array of arrays can be a specialization constant", "[]", "");
4338 // desktop always allows outer-dimension-unsized variable arrays,
4342 // for ES, if size isn't coming from an initializer, it has to be explicitly declared now,
4343 // with very few exceptions
4345 // implicitly-sized io exceptions:
4347 case EShLangGeometry:
4348 if (qualifier.storage == EvqVaryingIn)
4349 if ((isEsProfile() && version >= 320) ||
4350 extensionsTurnedOn(Num_AEP_geometry_shader, AEP_geometry_shader))
4353 case EShLangTessControl:
4354 if ( qualifier.storage == EvqVaryingIn ||
4355 (qualifier.storage == EvqVaryingOut && ! qualifier.isPatch()))
4356 if ((isEsProfile() && version >= 320) ||
4357 extensionsTurnedOn(Num_AEP_tessellation_shader, AEP_tessellation_shader))
4360 case EShLangTessEvaluation:
4361 if ((qualifier.storage == EvqVaryingIn && ! qualifier.isPatch()) ||
4362 qualifier.storage == EvqVaryingOut)
4363 if ((isEsProfile() && version >= 320) ||
4364 extensionsTurnedOn(Num_AEP_tessellation_shader, AEP_tessellation_shader))
4368 if (qualifier.storage == EvqVaryingOut)
4369 if ((isEsProfile() && version >= 320) ||
4370 extensionsTurnedOn(Num_AEP_mesh_shader, AEP_mesh_shader))
4379 // last member of ssbo block exception:
4380 if (qualifier.storage == EvqBuffer && lastMember)
4383 arraySizeRequiredCheck(loc, *arraySizes);
4386 void TParseContext::arrayOfArrayVersionCheck(const TSourceLoc& loc, const TArraySizes* sizes)
4388 if (sizes == nullptr || sizes->getNumDims() == 1)
4391 const char* feature = "arrays of arrays";
4393 requireProfile(loc, EEsProfile | ECoreProfile | ECompatibilityProfile, feature);
4394 profileRequires(loc, EEsProfile, 310, nullptr, feature);
4395 profileRequires(loc, ECoreProfile | ECompatibilityProfile, 430, nullptr, feature);
4399 // Do all the semantic checking for declaring or redeclaring an array, with and
4400 // without a size, and make the right changes to the symbol table.
4402 void TParseContext::declareArray(const TSourceLoc& loc, const TString& identifier, const TType& type, TSymbol*& symbol)
4404 if (symbol == nullptr) {
4406 symbol = symbolTable.find(identifier, nullptr, ¤tScope);
4408 if (symbol && builtInName(identifier) && ! symbolTable.atBuiltInLevel()) {
4409 // bad shader (errors already reported) trying to redeclare a built-in name as an array
4413 if (symbol == nullptr || ! currentScope) {
4415 // Successfully process a new definition.
4416 // (Redeclarations have to take place at the same scope; otherwise they are hiding declarations)
4418 symbol = new TVariable(&identifier, type);
4419 symbolTable.insert(*symbol);
4420 if (symbolTable.atGlobalLevel())
4421 trackLinkage(*symbol);
4424 if (! symbolTable.atBuiltInLevel()) {
4425 if (isIoResizeArray(type)) {
4426 ioArraySymbolResizeList.push_back(symbol);
4427 checkIoArraysConsistency(loc, true);
4429 fixIoArraySize(loc, symbol->getWritableType());
4435 if (symbol->getAsAnonMember()) {
4436 error(loc, "cannot redeclare a user-block member array", identifier.c_str(), "");
4443 // Process a redeclaration.
4446 if (symbol == nullptr) {
4447 error(loc, "array variable name expected", identifier.c_str(), "");
4451 // redeclareBuiltinVariable() should have already done the copyUp()
4452 TType& existingType = symbol->getWritableType();
4454 if (! existingType.isArray()) {
4455 error(loc, "redeclaring non-array as array", identifier.c_str(), "");
4459 if (! existingType.sameElementType(type)) {
4460 error(loc, "redeclaration of array with a different element type", identifier.c_str(), "");
4464 if (! existingType.sameInnerArrayness(type)) {
4465 error(loc, "redeclaration of array with a different array dimensions or sizes", identifier.c_str(), "");
4470 if (existingType.isSizedArray()) {
4471 // be more leniant for input arrays to geometry shaders and tessellation control outputs, where the redeclaration is the same size
4472 if (! (isIoResizeArray(type) && existingType.getOuterArraySize() == type.getOuterArraySize()))
4473 error(loc, "redeclaration of array with size", identifier.c_str(), "");
4477 arrayLimitCheck(loc, identifier, type.getOuterArraySize());
4479 existingType.updateArraySizes(type);
4481 if (isIoResizeArray(type))
4482 checkIoArraysConsistency(loc);
4488 // Policy and error check for needing a runtime sized array.
4489 void TParseContext::checkRuntimeSizable(const TSourceLoc& loc, const TIntermTyped& base)
4491 // runtime length implies runtime sizeable, so no problem
4492 if (isRuntimeLength(base))
4495 if (base.getType().getQualifier().builtIn == EbvSampleMask)
4498 // Check for last member of a bufferreference type, which is runtime sizeable
4499 // but doesn't support runtime length
4500 if (base.getType().getQualifier().storage == EvqBuffer) {
4501 const TIntermBinary* binary = base.getAsBinaryNode();
4502 if (binary != nullptr &&
4503 binary->getOp() == EOpIndexDirectStruct &&
4504 binary->getLeft()->isReference()) {
4506 const int index = binary->getRight()->getAsConstantUnion()->getConstArray()[0].getIConst();
4507 const int memberCount = (int)binary->getLeft()->getType().getReferentType()->getStruct()->size();
4508 if (index == memberCount - 1)
4513 // check for additional things allowed by GL_EXT_nonuniform_qualifier
4514 if (base.getBasicType() == EbtSampler || base.getBasicType() == EbtAccStruct || base.getBasicType() == EbtRayQuery ||
4515 (base.getBasicType() == EbtBlock && base.getType().getQualifier().isUniformOrBuffer()))
4516 requireExtensions(loc, 1, &E_GL_EXT_nonuniform_qualifier, "variable index");
4518 error(loc, "", "[", "array must be redeclared with a size before being indexed with a variable");
4521 // Policy decision for whether a run-time .length() is allowed.
4522 bool TParseContext::isRuntimeLength(const TIntermTyped& base) const
4524 if (base.getType().getQualifier().storage == EvqBuffer) {
4525 // in a buffer block
4526 const TIntermBinary* binary = base.getAsBinaryNode();
4527 if (binary != nullptr && binary->getOp() == EOpIndexDirectStruct) {
4528 // is it the last member?
4529 const int index = binary->getRight()->getAsConstantUnion()->getConstArray()[0].getIConst();
4531 if (binary->getLeft()->isReference())
4534 const int memberCount = (int)binary->getLeft()->getType().getStruct()->size();
4535 if (index == memberCount - 1)
4543 // Check if mesh perviewNV attributes have a view dimension
4544 // and resize it to gl_MaxMeshViewCountNV when implicitly sized.
4545 void TParseContext::checkAndResizeMeshViewDim(const TSourceLoc& loc, TType& type, bool isBlockMember)
4547 // see if member is a per-view attribute
4548 if (!type.getQualifier().isPerView())
4551 if ((isBlockMember && type.isArray()) || (!isBlockMember && type.isArrayOfArrays())) {
4552 // since we don't have the maxMeshViewCountNV set during parsing builtins, we hardcode the value.
4553 int maxViewCount = parsingBuiltins ? 4 : resources.maxMeshViewCountNV;
4554 // For block members, outermost array dimension is the view dimension.
4555 // For non-block members, outermost array dimension is the vertex/primitive dimension
4556 // and 2nd outermost is the view dimension.
4557 int viewDim = isBlockMember ? 0 : 1;
4558 int viewDimSize = type.getArraySizes()->getDimSize(viewDim);
4560 if (viewDimSize != UnsizedArraySize && viewDimSize != maxViewCount)
4561 error(loc, "mesh view output array size must be gl_MaxMeshViewCountNV or implicitly sized", "[]", "");
4562 else if (viewDimSize == UnsizedArraySize)
4563 type.getArraySizes()->setDimSize(viewDim, maxViewCount);
4566 error(loc, "requires a view array dimension", "perviewNV", "");
4570 #endif // GLSLANG_WEB
4572 // Returns true if the first argument to the #line directive is the line number for the next line.
4574 // Desktop, pre-version 3.30: "After processing this directive
4575 // (including its new-line), the implementation will behave as if it is compiling at line number line+1 and
4576 // source string number source-string-number."
4578 // Desktop, version 3.30 and later, and ES: "After processing this directive
4579 // (including its new-line), the implementation will behave as if it is compiling at line number line and
4580 // source string number source-string-number.
4581 bool TParseContext::lineDirectiveShouldSetNextLine() const
4583 return isEsProfile() || version >= 330;
4587 // Enforce non-initializer type/qualifier rules.
4589 void TParseContext::nonInitConstCheck(const TSourceLoc& loc, TString& identifier, TType& type)
4592 // Make the qualifier make sense, given that there is not an initializer.
4594 if (type.getQualifier().storage == EvqConst ||
4595 type.getQualifier().storage == EvqConstReadOnly) {
4596 type.getQualifier().makeTemporary();
4597 error(loc, "variables with qualifier 'const' must be initialized", identifier.c_str(), "");
4602 // See if the identifier is a built-in symbol that can be redeclared, and if so,
4603 // copy the symbol table's read-only built-in variable to the current
4604 // global level, where it can be modified based on the passed in type.
4606 // Returns nullptr if no redeclaration took place; meaning a normal declaration still
4607 // needs to occur for it, not necessarily an error.
4609 // Returns a redeclared and type-modified variable if a redeclarated occurred.
4611 TSymbol* TParseContext::redeclareBuiltinVariable(const TSourceLoc& loc, const TString& identifier,
4612 const TQualifier& qualifier, const TShaderQualifiers& publicType)
4615 if (! builtInName(identifier) || symbolTable.atBuiltInLevel() || ! symbolTable.atGlobalLevel())
4618 bool nonEsRedecls = (!isEsProfile() && (version >= 130 || identifier == "gl_TexCoord"));
4619 bool esRedecls = (isEsProfile() &&
4620 (version >= 320 || extensionsTurnedOn(Num_AEP_shader_io_blocks, AEP_shader_io_blocks)));
4621 if (! esRedecls && ! nonEsRedecls)
4624 // Special case when using GL_ARB_separate_shader_objects
4625 bool ssoPre150 = false; // means the only reason this variable is redeclared is due to this combination
4626 if (!isEsProfile() && version <= 140 && extensionTurnedOn(E_GL_ARB_separate_shader_objects)) {
4627 if (identifier == "gl_Position" ||
4628 identifier == "gl_PointSize" ||
4629 identifier == "gl_ClipVertex" ||
4630 identifier == "gl_FogFragCoord")
4634 // Potentially redeclaring a built-in variable...
4637 (identifier == "gl_FragDepth" && ((nonEsRedecls && version >= 420) || esRedecls)) ||
4638 (identifier == "gl_FragCoord" && ((nonEsRedecls && version >= 140) || esRedecls)) ||
4639 identifier == "gl_ClipDistance" ||
4640 identifier == "gl_CullDistance" ||
4641 identifier == "gl_ShadingRateEXT" ||
4642 identifier == "gl_PrimitiveShadingRateEXT" ||
4643 identifier == "gl_FrontColor" ||
4644 identifier == "gl_BackColor" ||
4645 identifier == "gl_FrontSecondaryColor" ||
4646 identifier == "gl_BackSecondaryColor" ||
4647 identifier == "gl_SecondaryColor" ||
4648 (identifier == "gl_Color" && language == EShLangFragment) ||
4649 (identifier == "gl_FragStencilRefARB" && (nonEsRedecls && version >= 140)
4650 && language == EShLangFragment) ||
4651 identifier == "gl_SampleMask" ||
4652 identifier == "gl_Layer" ||
4653 identifier == "gl_PrimitiveIndicesNV" ||
4654 identifier == "gl_PrimitivePointIndicesEXT" ||
4655 identifier == "gl_PrimitiveLineIndicesEXT" ||
4656 identifier == "gl_PrimitiveTriangleIndicesEXT" ||
4657 identifier == "gl_TexCoord") {
4659 // Find the existing symbol, if any.
4661 TSymbol* symbol = symbolTable.find(identifier, &builtIn);
4663 // If the symbol was not found, this must be a version/profile/stage
4664 // that doesn't have it.
4668 // If it wasn't at a built-in level, then it's already been redeclared;
4669 // that is, this is a redeclaration of a redeclaration; reuse that initial
4670 // redeclaration. Otherwise, make the new one.
4672 makeEditable(symbol);
4673 symbolTable.amendSymbolIdLevel(*symbol);
4676 // Now, modify the type of the copy, as per the type of the current redeclaration.
4678 TQualifier& symbolQualifier = symbol->getWritableType().getQualifier();
4680 if (intermediate.inIoAccessed(identifier))
4681 error(loc, "cannot redeclare after use", identifier.c_str(), "");
4682 if (qualifier.hasLayout())
4683 error(loc, "cannot apply layout qualifier to", "redeclaration", symbol->getName().c_str());
4684 if (qualifier.isMemory() || qualifier.isAuxiliary() || (language == EShLangVertex && qualifier.storage != EvqVaryingOut) ||
4685 (language == EShLangFragment && qualifier.storage != EvqVaryingIn))
4686 error(loc, "cannot change storage, memory, or auxiliary qualification of", "redeclaration", symbol->getName().c_str());
4687 if (! qualifier.smooth)
4688 error(loc, "cannot change interpolation qualification of", "redeclaration", symbol->getName().c_str());
4689 } else if (identifier == "gl_FrontColor" ||
4690 identifier == "gl_BackColor" ||
4691 identifier == "gl_FrontSecondaryColor" ||
4692 identifier == "gl_BackSecondaryColor" ||
4693 identifier == "gl_SecondaryColor" ||
4694 identifier == "gl_Color") {
4695 symbolQualifier.flat = qualifier.flat;
4696 symbolQualifier.smooth = qualifier.smooth;
4697 symbolQualifier.nopersp = qualifier.nopersp;
4698 if (qualifier.hasLayout())
4699 error(loc, "cannot apply layout qualifier to", "redeclaration", symbol->getName().c_str());
4700 if (qualifier.isMemory() || qualifier.isAuxiliary() || symbol->getType().getQualifier().storage != qualifier.storage)
4701 error(loc, "cannot change storage, memory, or auxiliary qualification of", "redeclaration", symbol->getName().c_str());
4702 } else if (identifier == "gl_TexCoord" ||
4703 identifier == "gl_ClipDistance" ||
4704 identifier == "gl_CullDistance") {
4705 if (qualifier.hasLayout() || qualifier.isMemory() || qualifier.isAuxiliary() ||
4706 qualifier.nopersp != symbolQualifier.nopersp || qualifier.flat != symbolQualifier.flat ||
4707 symbolQualifier.storage != qualifier.storage)
4708 error(loc, "cannot change qualification of", "redeclaration", symbol->getName().c_str());
4709 } else if (identifier == "gl_FragCoord") {
4710 if (!intermediate.getTexCoordRedeclared() && intermediate.inIoAccessed("gl_FragCoord"))
4711 error(loc, "cannot redeclare after use", "gl_FragCoord", "");
4712 if (qualifier.nopersp != symbolQualifier.nopersp || qualifier.flat != symbolQualifier.flat ||
4713 qualifier.isMemory() || qualifier.isAuxiliary())
4714 error(loc, "can only change layout qualification of", "redeclaration", symbol->getName().c_str());
4715 if (qualifier.storage != EvqVaryingIn)
4716 error(loc, "cannot change input storage qualification of", "redeclaration", symbol->getName().c_str());
4717 if (! builtIn && (publicType.pixelCenterInteger != intermediate.getPixelCenterInteger() ||
4718 publicType.originUpperLeft != intermediate.getOriginUpperLeft()))
4719 error(loc, "cannot redeclare with different qualification:", "redeclaration", symbol->getName().c_str());
4722 intermediate.setTexCoordRedeclared();
4723 if (publicType.pixelCenterInteger)
4724 intermediate.setPixelCenterInteger();
4725 if (publicType.originUpperLeft)
4726 intermediate.setOriginUpperLeft();
4727 } else if (identifier == "gl_FragDepth") {
4728 if (qualifier.nopersp != symbolQualifier.nopersp || qualifier.flat != symbolQualifier.flat ||
4729 qualifier.isMemory() || qualifier.isAuxiliary())
4730 error(loc, "can only change layout qualification of", "redeclaration", symbol->getName().c_str());
4731 if (qualifier.storage != EvqVaryingOut)
4732 error(loc, "cannot change output storage qualification of", "redeclaration", symbol->getName().c_str());
4733 if (publicType.layoutDepth != EldNone) {
4734 if (intermediate.inIoAccessed("gl_FragDepth"))
4735 error(loc, "cannot redeclare after use", "gl_FragDepth", "");
4736 if (! intermediate.setDepth(publicType.layoutDepth))
4737 error(loc, "all redeclarations must use the same depth layout on", "redeclaration", symbol->getName().c_str());
4739 } else if (identifier == "gl_FragStencilRefARB") {
4740 if (qualifier.nopersp != symbolQualifier.nopersp || qualifier.flat != symbolQualifier.flat ||
4741 qualifier.isMemory() || qualifier.isAuxiliary())
4742 error(loc, "can only change layout qualification of", "redeclaration", symbol->getName().c_str());
4743 if (qualifier.storage != EvqVaryingOut)
4744 error(loc, "cannot change output storage qualification of", "redeclaration", symbol->getName().c_str());
4745 if (publicType.layoutStencil != ElsNone) {
4746 if (intermediate.inIoAccessed("gl_FragStencilRefARB"))
4747 error(loc, "cannot redeclare after use", "gl_FragStencilRefARB", "");
4748 if (!intermediate.setStencil(publicType.layoutStencil))
4749 error(loc, "all redeclarations must use the same stencil layout on", "redeclaration",
4750 symbol->getName().c_str());
4754 identifier == "gl_PrimitiveIndicesNV") {
4755 if (qualifier.hasLayout())
4756 error(loc, "cannot apply layout qualifier to", "redeclaration", symbol->getName().c_str());
4757 if (qualifier.storage != EvqVaryingOut)
4758 error(loc, "cannot change output storage qualification of", "redeclaration", symbol->getName().c_str());
4760 else if (identifier == "gl_SampleMask") {
4761 if (!publicType.layoutOverrideCoverage) {
4762 error(loc, "redeclaration only allowed for override_coverage layout", "redeclaration", symbol->getName().c_str());
4764 intermediate.setLayoutOverrideCoverage();
4766 else if (identifier == "gl_Layer") {
4767 if (!qualifier.layoutViewportRelative && qualifier.layoutSecondaryViewportRelativeOffset == -2048)
4768 error(loc, "redeclaration only allowed for viewport_relative or secondary_view_offset layout", "redeclaration", symbol->getName().c_str());
4769 symbolQualifier.layoutViewportRelative = qualifier.layoutViewportRelative;
4770 symbolQualifier.layoutSecondaryViewportRelativeOffset = qualifier.layoutSecondaryViewportRelativeOffset;
4773 // TODO: semantics quality: separate smooth from nothing declared, then use IsInterpolation for several tests above
4783 // Either redeclare the requested block, or give an error message why it can't be done.
4785 // TODO: functionality: explicitly sizing members of redeclared blocks is not giving them an explicit size
4786 void TParseContext::redeclareBuiltinBlock(const TSourceLoc& loc, TTypeList& newTypeList, const TString& blockName,
4787 const TString* instanceName, TArraySizes* arraySizes)
4790 const char* feature = "built-in block redeclaration";
4791 profileRequires(loc, EEsProfile, 320, Num_AEP_shader_io_blocks, AEP_shader_io_blocks, feature);
4792 profileRequires(loc, ~EEsProfile, 410, E_GL_ARB_separate_shader_objects, feature);
4794 if (blockName != "gl_PerVertex" && blockName != "gl_PerFragment" &&
4795 blockName != "gl_MeshPerVertexNV" && blockName != "gl_MeshPerPrimitiveNV" &&
4796 blockName != "gl_MeshPerVertexEXT" && blockName != "gl_MeshPerPrimitiveEXT") {
4797 error(loc, "cannot redeclare block: ", "block declaration", blockName.c_str());
4801 // Redeclaring a built-in block...
4803 if (instanceName && ! builtInName(*instanceName)) {
4804 error(loc, "cannot redeclare a built-in block with a user name", instanceName->c_str(), "");
4808 // Blocks with instance names are easy to find, lookup the instance name,
4809 // Anonymous blocks need to be found via a member.
4813 block = symbolTable.find(*instanceName, &builtIn);
4815 block = symbolTable.find(newTypeList.front().type->getFieldName(), &builtIn);
4817 // If the block was not found, this must be a version/profile/stage
4818 // that doesn't have it, or the instance name is wrong.
4819 const char* errorName = instanceName ? instanceName->c_str() : newTypeList.front().type->getFieldName().c_str();
4821 error(loc, "no declaration found for redeclaration", errorName, "");
4824 // Built-in blocks cannot be redeclared more than once, which if happened,
4825 // we'd be finding the already redeclared one here, rather than the built in.
4827 error(loc, "can only redeclare a built-in block once, and before any use", blockName.c_str(), "");
4831 // Copy the block to make a writable version, to insert into the block table after editing.
4832 block = symbolTable.copyUpDeferredInsert(block);
4834 if (block->getType().getBasicType() != EbtBlock) {
4835 error(loc, "cannot redeclare a non block as a block", errorName, "");
4839 // Fix XFB stuff up, it applies to the order of the redeclaration, not
4840 // the order of the original members.
4841 if (currentBlockQualifier.storage == EvqVaryingOut && globalOutputDefaults.hasXfbBuffer()) {
4842 if (!currentBlockQualifier.hasXfbBuffer())
4843 currentBlockQualifier.layoutXfbBuffer = globalOutputDefaults.layoutXfbBuffer;
4844 if (!currentBlockQualifier.hasStream())
4845 currentBlockQualifier.layoutStream = globalOutputDefaults.layoutStream;
4846 fixXfbOffsets(currentBlockQualifier, newTypeList);
4849 // Edit and error check the container against the redeclaration
4850 // - remove unused members
4851 // - ensure remaining qualifiers/types match
4853 TType& type = block->getWritableType();
4855 // if gl_PerVertex is redeclared for the purpose of passing through "gl_Position"
4856 // for passthrough purpose, the redeclared block should have the same qualifers as
4858 if (currentBlockQualifier.layoutPassthrough) {
4859 type.getQualifier().layoutPassthrough = currentBlockQualifier.layoutPassthrough;
4860 type.getQualifier().storage = currentBlockQualifier.storage;
4861 type.getQualifier().layoutStream = currentBlockQualifier.layoutStream;
4862 type.getQualifier().layoutXfbBuffer = currentBlockQualifier.layoutXfbBuffer;
4865 TTypeList::iterator member = type.getWritableStruct()->begin();
4866 size_t numOriginalMembersFound = 0;
4867 while (member != type.getStruct()->end()) {
4870 TTypeList::const_iterator newMember;
4871 TSourceLoc memberLoc;
4873 for (newMember = newTypeList.begin(); newMember != newTypeList.end(); ++newMember) {
4874 if (member->type->getFieldName() == newMember->type->getFieldName()) {
4876 memberLoc = newMember->loc;
4882 ++numOriginalMembersFound;
4883 // - ensure match between redeclared members' types
4884 // - check for things that can't be changed
4885 // - update things that can be changed
4886 TType& oldType = *member->type;
4887 const TType& newType = *newMember->type;
4888 if (! newType.sameElementType(oldType))
4889 error(memberLoc, "cannot redeclare block member with a different type", member->type->getFieldName().c_str(), "");
4890 if (oldType.isArray() != newType.isArray())
4891 error(memberLoc, "cannot change arrayness of redeclared block member", member->type->getFieldName().c_str(), "");
4892 else if (! oldType.getQualifier().isPerView() && ! oldType.sameArrayness(newType) && oldType.isSizedArray())
4893 error(memberLoc, "cannot change array size of redeclared block member", member->type->getFieldName().c_str(), "");
4894 else if (! oldType.getQualifier().isPerView() && newType.isArray())
4895 arrayLimitCheck(loc, member->type->getFieldName(), newType.getOuterArraySize());
4896 if (oldType.getQualifier().isPerView() && ! newType.getQualifier().isPerView())
4897 error(memberLoc, "missing perviewNV qualifier to redeclared block member", member->type->getFieldName().c_str(), "");
4898 else if (! oldType.getQualifier().isPerView() && newType.getQualifier().isPerView())
4899 error(memberLoc, "cannot add perviewNV qualifier to redeclared block member", member->type->getFieldName().c_str(), "");
4900 else if (newType.getQualifier().isPerView()) {
4901 if (oldType.getArraySizes()->getNumDims() != newType.getArraySizes()->getNumDims())
4902 error(memberLoc, "cannot change arrayness of redeclared block member", member->type->getFieldName().c_str(), "");
4903 else if (! newType.isUnsizedArray() && newType.getOuterArraySize() != resources.maxMeshViewCountNV)
4904 error(loc, "mesh view output array size must be gl_MaxMeshViewCountNV or implicitly sized", "[]", "");
4905 else if (newType.getArraySizes()->getNumDims() == 2) {
4906 int innerDimSize = newType.getArraySizes()->getDimSize(1);
4907 arrayLimitCheck(memberLoc, member->type->getFieldName(), innerDimSize);
4908 oldType.getArraySizes()->setDimSize(1, innerDimSize);
4911 if (oldType.getQualifier().isPerPrimitive() && ! newType.getQualifier().isPerPrimitive())
4912 error(memberLoc, "missing perprimitiveNV qualifier to redeclared block member", member->type->getFieldName().c_str(), "");
4913 else if (! oldType.getQualifier().isPerPrimitive() && newType.getQualifier().isPerPrimitive())
4914 error(memberLoc, "cannot add perprimitiveNV qualifier to redeclared block member", member->type->getFieldName().c_str(), "");
4915 if (newType.getQualifier().isMemory())
4916 error(memberLoc, "cannot add memory qualifier to redeclared block member", member->type->getFieldName().c_str(), "");
4917 if (newType.getQualifier().hasNonXfbLayout())
4918 error(memberLoc, "cannot add non-XFB layout to redeclared block member", member->type->getFieldName().c_str(), "");
4919 if (newType.getQualifier().patch)
4920 error(memberLoc, "cannot add patch to redeclared block member", member->type->getFieldName().c_str(), "");
4921 if (newType.getQualifier().hasXfbBuffer() &&
4922 newType.getQualifier().layoutXfbBuffer != currentBlockQualifier.layoutXfbBuffer)
4923 error(memberLoc, "member cannot contradict block (or what block inherited from global)", "xfb_buffer", "");
4924 if (newType.getQualifier().hasStream() &&
4925 newType.getQualifier().layoutStream != currentBlockQualifier.layoutStream)
4926 error(memberLoc, "member cannot contradict block (or what block inherited from global)", "xfb_stream", "");
4927 oldType.getQualifier().centroid = newType.getQualifier().centroid;
4928 oldType.getQualifier().sample = newType.getQualifier().sample;
4929 oldType.getQualifier().invariant = newType.getQualifier().invariant;
4930 oldType.getQualifier().noContraction = newType.getQualifier().noContraction;
4931 oldType.getQualifier().smooth = newType.getQualifier().smooth;
4932 oldType.getQualifier().flat = newType.getQualifier().flat;
4933 oldType.getQualifier().nopersp = newType.getQualifier().nopersp;
4934 oldType.getQualifier().layoutXfbOffset = newType.getQualifier().layoutXfbOffset;
4935 oldType.getQualifier().layoutXfbBuffer = newType.getQualifier().layoutXfbBuffer;
4936 oldType.getQualifier().layoutXfbStride = newType.getQualifier().layoutXfbStride;
4937 if (oldType.getQualifier().layoutXfbOffset != TQualifier::layoutXfbBufferEnd) {
4938 // If any member has an xfb_offset, then the block's xfb_buffer inherents current xfb_buffer,
4939 // and for xfb processing, the member needs it as well, along with xfb_stride.
4940 type.getQualifier().layoutXfbBuffer = currentBlockQualifier.layoutXfbBuffer;
4941 oldType.getQualifier().layoutXfbBuffer = currentBlockQualifier.layoutXfbBuffer;
4943 if (oldType.isUnsizedArray() && newType.isSizedArray())
4944 oldType.changeOuterArraySize(newType.getOuterArraySize());
4946 // check and process the member's type, which will include managing xfb information
4947 layoutTypeCheck(loc, oldType);
4949 // go to next member
4952 // For missing members of anonymous blocks that have been redeclared,
4953 // hide the original (shared) declaration.
4954 // Instance-named blocks can just have the member removed.
4956 member = type.getWritableStruct()->erase(member);
4958 member->type->hideMember();
4964 if (spvVersion.vulkan > 0) {
4965 // ...then streams apply to built-in blocks, instead of them being only on stream 0
4966 type.getQualifier().layoutStream = currentBlockQualifier.layoutStream;
4969 if (numOriginalMembersFound < newTypeList.size())
4970 error(loc, "block redeclaration has extra members", blockName.c_str(), "");
4971 if (type.isArray() != (arraySizes != nullptr) ||
4972 (type.isArray() && arraySizes != nullptr && type.getArraySizes()->getNumDims() != arraySizes->getNumDims()))
4973 error(loc, "cannot change arrayness of redeclared block", blockName.c_str(), "");
4974 else if (type.isArray()) {
4975 // At this point, we know both are arrays and both have the same number of dimensions.
4977 // It is okay for a built-in block redeclaration to be unsized, and keep the size of the
4978 // original block declaration.
4979 if (!arraySizes->isSized() && type.isSizedArray())
4980 arraySizes->changeOuterSize(type.getOuterArraySize());
4982 // And, okay to be giving a size to the array, by the redeclaration
4983 if (!type.isSizedArray() && arraySizes->isSized())
4984 type.changeOuterArraySize(arraySizes->getOuterSize());
4986 // Now, they must match in all dimensions.
4987 if (type.isSizedArray() && *type.getArraySizes() != *arraySizes)
4988 error(loc, "cannot change array size of redeclared block", blockName.c_str(), "");
4991 symbolTable.insert(*block);
4993 // Check for general layout qualifier errors
4994 layoutObjectCheck(loc, *block);
4996 // Tracking for implicit sizing of array
4997 if (isIoResizeArray(block->getType())) {
4998 ioArraySymbolResizeList.push_back(block);
4999 checkIoArraysConsistency(loc, true);
5000 } else if (block->getType().isArray())
5001 fixIoArraySize(loc, block->getWritableType());
5003 // Save it in the AST for linker use.
5004 trackLinkage(*block);
5005 #endif // GLSLANG_WEB
5008 void TParseContext::paramCheckFixStorage(const TSourceLoc& loc, const TStorageQualifier& qualifier, TType& type)
5010 switch (qualifier) {
5012 case EvqConstReadOnly:
5013 type.getQualifier().storage = EvqConstReadOnly;
5018 type.getQualifier().storage = qualifier;
5022 type.getQualifier().storage = EvqIn;
5025 type.getQualifier().storage = EvqIn;
5026 error(loc, "storage qualifier not allowed on function parameter", GetStorageQualifierString(qualifier), "");
5031 void TParseContext::paramCheckFix(const TSourceLoc& loc, const TQualifier& qualifier, TType& type)
5034 if (qualifier.isMemory()) {
5035 type.getQualifier().volatil = qualifier.volatil;
5036 type.getQualifier().coherent = qualifier.coherent;
5037 type.getQualifier().devicecoherent = qualifier.devicecoherent ;
5038 type.getQualifier().queuefamilycoherent = qualifier.queuefamilycoherent;
5039 type.getQualifier().workgroupcoherent = qualifier.workgroupcoherent;
5040 type.getQualifier().subgroupcoherent = qualifier.subgroupcoherent;
5041 type.getQualifier().shadercallcoherent = qualifier.shadercallcoherent;
5042 type.getQualifier().nonprivate = qualifier.nonprivate;
5043 type.getQualifier().readonly = qualifier.readonly;
5044 type.getQualifier().writeonly = qualifier.writeonly;
5045 type.getQualifier().restrict = qualifier.restrict;
5049 if (qualifier.isAuxiliary() ||
5050 qualifier.isInterpolation())
5051 error(loc, "cannot use auxiliary or interpolation qualifiers on a function parameter", "", "");
5052 if (qualifier.hasLayout())
5053 error(loc, "cannot use layout qualifiers on a function parameter", "", "");
5054 if (qualifier.invariant)
5055 error(loc, "cannot use invariant qualifier on a function parameter", "", "");
5056 if (qualifier.isNoContraction()) {
5057 if (qualifier.isParamOutput())
5058 type.getQualifier().setNoContraction();
5060 warn(loc, "qualifier has no effect on non-output parameters", "precise", "");
5062 if (qualifier.isNonUniform())
5063 type.getQualifier().nonUniform = qualifier.nonUniform;
5065 if (qualifier.isSpirvByReference())
5066 type.getQualifier().setSpirvByReference();
5067 if (qualifier.isSpirvLiteral()) {
5068 if (type.getBasicType() == EbtFloat || type.getBasicType() == EbtInt || type.getBasicType() == EbtUint ||
5069 type.getBasicType() == EbtBool)
5070 type.getQualifier().setSpirvLiteral();
5072 error(loc, "cannot use spirv_literal qualifier", type.getBasicTypeString().c_str(), "");
5076 paramCheckFixStorage(loc, qualifier.storage, type);
5079 void TParseContext::nestedBlockCheck(const TSourceLoc& loc)
5081 if (structNestingLevel > 0 || blockNestingLevel > 0)
5082 error(loc, "cannot nest a block definition inside a structure or block", "", "");
5083 ++blockNestingLevel;
5086 void TParseContext::nestedStructCheck(const TSourceLoc& loc)
5088 if (structNestingLevel > 0 || blockNestingLevel > 0)
5089 error(loc, "cannot nest a structure definition inside a structure or block", "", "");
5090 ++structNestingLevel;
5093 void TParseContext::arrayObjectCheck(const TSourceLoc& loc, const TType& type, const char* op)
5095 // Some versions don't allow comparing arrays or structures containing arrays
5096 if (type.containsArray()) {
5097 profileRequires(loc, ENoProfile, 120, E_GL_3DL_array_objects, op);
5098 profileRequires(loc, EEsProfile, 300, nullptr, op);
5102 void TParseContext::opaqueCheck(const TSourceLoc& loc, const TType& type, const char* op)
5104 if (containsFieldWithBasicType(type, EbtSampler))
5105 error(loc, "can't use with samplers or structs containing samplers", op, "");
5108 void TParseContext::referenceCheck(const TSourceLoc& loc, const TType& type, const char* op)
5111 if (containsFieldWithBasicType(type, EbtReference))
5112 error(loc, "can't use with reference types", op, "");
5116 void TParseContext::storage16BitAssignmentCheck(const TSourceLoc& loc, const TType& type, const char* op)
5119 if (type.getBasicType() == EbtStruct && containsFieldWithBasicType(type, EbtFloat16))
5120 requireFloat16Arithmetic(loc, op, "can't use with structs containing float16");
5122 if (type.isArray() && type.getBasicType() == EbtFloat16)
5123 requireFloat16Arithmetic(loc, op, "can't use with arrays containing float16");
5125 if (type.getBasicType() == EbtStruct && containsFieldWithBasicType(type, EbtInt16))
5126 requireInt16Arithmetic(loc, op, "can't use with structs containing int16");
5128 if (type.isArray() && type.getBasicType() == EbtInt16)
5129 requireInt16Arithmetic(loc, op, "can't use with arrays containing int16");
5131 if (type.getBasicType() == EbtStruct && containsFieldWithBasicType(type, EbtUint16))
5132 requireInt16Arithmetic(loc, op, "can't use with structs containing uint16");
5134 if (type.isArray() && type.getBasicType() == EbtUint16)
5135 requireInt16Arithmetic(loc, op, "can't use with arrays containing uint16");
5137 if (type.getBasicType() == EbtStruct && containsFieldWithBasicType(type, EbtInt8))
5138 requireInt8Arithmetic(loc, op, "can't use with structs containing int8");
5140 if (type.isArray() && type.getBasicType() == EbtInt8)
5141 requireInt8Arithmetic(loc, op, "can't use with arrays containing int8");
5143 if (type.getBasicType() == EbtStruct && containsFieldWithBasicType(type, EbtUint8))
5144 requireInt8Arithmetic(loc, op, "can't use with structs containing uint8");
5146 if (type.isArray() && type.getBasicType() == EbtUint8)
5147 requireInt8Arithmetic(loc, op, "can't use with arrays containing uint8");
5151 void TParseContext::specializationCheck(const TSourceLoc& loc, const TType& type, const char* op)
5153 if (type.containsSpecializationSize())
5154 error(loc, "can't use with types containing arrays sized with a specialization constant", op, "");
5157 void TParseContext::structTypeCheck(const TSourceLoc& /*loc*/, TPublicType& publicType)
5159 const TTypeList& typeList = *publicType.userDef->getStruct();
5161 // fix and check for member storage qualifiers and types that don't belong within a structure
5162 for (unsigned int member = 0; member < typeList.size(); ++member) {
5163 TQualifier& memberQualifier = typeList[member].type->getQualifier();
5164 const TSourceLoc& memberLoc = typeList[member].loc;
5165 if (memberQualifier.isAuxiliary() ||
5166 memberQualifier.isInterpolation() ||
5167 (memberQualifier.storage != EvqTemporary && memberQualifier.storage != EvqGlobal))
5168 error(memberLoc, "cannot use storage or interpolation qualifiers on structure members", typeList[member].type->getFieldName().c_str(), "");
5169 if (memberQualifier.isMemory())
5170 error(memberLoc, "cannot use memory qualifiers on structure members", typeList[member].type->getFieldName().c_str(), "");
5171 if (memberQualifier.hasLayout()) {
5172 error(memberLoc, "cannot use layout qualifiers on structure members", typeList[member].type->getFieldName().c_str(), "");
5173 memberQualifier.clearLayout();
5175 if (memberQualifier.invariant)
5176 error(memberLoc, "cannot use invariant qualifier on structure members", typeList[member].type->getFieldName().c_str(), "");
5181 // See if this loop satisfies the limitations for ES 2.0 (version 100) for loops in Appendex A:
5183 // "The loop index has type int or float.
5185 // "The for statement has the form:
5186 // for ( init-declaration ; condition ; expression )
5187 // init-declaration has the form: type-specifier identifier = constant-expression
5188 // condition has the form: loop-index relational_operator constant-expression
5189 // where relational_operator is one of: > >= < <= == or !=
5190 // expression [sic] has one of the following forms:
5193 // loop-index += constant-expression
5194 // loop-index -= constant-expression
5196 // The body is handled in an AST traversal.
5198 void TParseContext::inductiveLoopCheck(const TSourceLoc& loc, TIntermNode* init, TIntermLoop* loop)
5201 // loop index init must exist and be a declaration, which shows up in the AST as an aggregate of size 1 of the declaration
5202 bool badInit = false;
5203 if (! init || ! init->getAsAggregate() || init->getAsAggregate()->getSequence().size() != 1)
5205 TIntermBinary* binaryInit = 0;
5207 // get the declaration assignment
5208 binaryInit = init->getAsAggregate()->getSequence()[0]->getAsBinaryNode();
5213 error(loc, "inductive-loop init-declaration requires the form \"type-specifier loop-index = constant-expression\"", "limitations", "");
5217 // loop index must be type int or float
5218 if (! binaryInit->getType().isScalar() || (binaryInit->getBasicType() != EbtInt && binaryInit->getBasicType() != EbtFloat)) {
5219 error(loc, "inductive loop requires a scalar 'int' or 'float' loop index", "limitations", "");
5223 // init is the form "loop-index = constant"
5224 if (binaryInit->getOp() != EOpAssign || ! binaryInit->getLeft()->getAsSymbolNode() || ! binaryInit->getRight()->getAsConstantUnion()) {
5225 error(loc, "inductive-loop init-declaration requires the form \"type-specifier loop-index = constant-expression\"", "limitations", "");
5229 // get the unique id of the loop index
5230 long long loopIndex = binaryInit->getLeft()->getAsSymbolNode()->getId();
5231 inductiveLoopIds.insert(loopIndex);
5233 // condition's form must be "loop-index relational-operator constant-expression"
5234 bool badCond = ! loop->getTest();
5236 TIntermBinary* binaryCond = loop->getTest()->getAsBinaryNode();
5237 badCond = ! binaryCond;
5239 switch (binaryCond->getOp()) {
5240 case EOpGreaterThan:
5241 case EOpGreaterThanEqual:
5243 case EOpLessThanEqual:
5251 if (binaryCond && (! binaryCond->getLeft()->getAsSymbolNode() ||
5252 binaryCond->getLeft()->getAsSymbolNode()->getId() != loopIndex ||
5253 ! binaryCond->getRight()->getAsConstantUnion()))
5257 error(loc, "inductive-loop condition requires the form \"loop-index <comparison-op> constant-expression\"", "limitations", "");
5263 // loop-index += constant-expression
5264 // loop-index -= constant-expression
5265 bool badTerminal = ! loop->getTerminal();
5266 if (! badTerminal) {
5267 TIntermUnary* unaryTerminal = loop->getTerminal()->getAsUnaryNode();
5268 TIntermBinary* binaryTerminal = loop->getTerminal()->getAsBinaryNode();
5269 if (unaryTerminal || binaryTerminal) {
5270 switch(loop->getTerminal()->getAsOperator()->getOp()) {
5271 case EOpPostDecrement:
5272 case EOpPostIncrement:
5281 if (binaryTerminal && (! binaryTerminal->getLeft()->getAsSymbolNode() ||
5282 binaryTerminal->getLeft()->getAsSymbolNode()->getId() != loopIndex ||
5283 ! binaryTerminal->getRight()->getAsConstantUnion()))
5285 if (unaryTerminal && (! unaryTerminal->getOperand()->getAsSymbolNode() ||
5286 unaryTerminal->getOperand()->getAsSymbolNode()->getId() != loopIndex))
5290 error(loc, "inductive-loop termination requires the form \"loop-index++, loop-index--, loop-index += constant-expression, or loop-index -= constant-expression\"", "limitations", "");
5295 inductiveLoopBodyCheck(loop->getBody(), loopIndex, symbolTable);
5300 // Do limit checks for built-in arrays.
5301 void TParseContext::arrayLimitCheck(const TSourceLoc& loc, const TString& identifier, int size)
5303 if (identifier.compare("gl_TexCoord") == 0)
5304 limitCheck(loc, size, "gl_MaxTextureCoords", "gl_TexCoord array size");
5305 else if (identifier.compare("gl_ClipDistance") == 0)
5306 limitCheck(loc, size, "gl_MaxClipDistances", "gl_ClipDistance array size");
5307 else if (identifier.compare("gl_CullDistance") == 0)
5308 limitCheck(loc, size, "gl_MaxCullDistances", "gl_CullDistance array size");
5309 else if (identifier.compare("gl_ClipDistancePerViewNV") == 0)
5310 limitCheck(loc, size, "gl_MaxClipDistances", "gl_ClipDistancePerViewNV array size");
5311 else if (identifier.compare("gl_CullDistancePerViewNV") == 0)
5312 limitCheck(loc, size, "gl_MaxCullDistances", "gl_CullDistancePerViewNV array size");
5314 #endif // GLSLANG_WEB
5316 // See if the provided value is less than or equal to the symbol indicated by limit,
5317 // which should be a constant in the symbol table.
5318 void TParseContext::limitCheck(const TSourceLoc& loc, int value, const char* limit, const char* feature)
5320 TSymbol* symbol = symbolTable.find(limit);
5321 assert(symbol->getAsVariable());
5322 const TConstUnionArray& constArray = symbol->getAsVariable()->getConstArray();
5323 assert(! constArray.empty());
5324 if (value > constArray[0].getIConst())
5325 error(loc, "must be less than or equal to", feature, "%s (%d)", limit, constArray[0].getIConst());
5331 // Do any additional error checking, etc., once we know the parsing is done.
5333 void TParseContext::finish()
5335 TParseContextBase::finish();
5337 if (parsingBuiltins)
5340 // Check on array indexes for ES 2.0 (version 100) limitations.
5341 for (size_t i = 0; i < needsIndexLimitationChecking.size(); ++i)
5342 constantIndexExpressionCheck(needsIndexLimitationChecking[i]);
5344 // Check for stages that are enabled by extension.
5345 // Can't do this at the beginning, it is chicken and egg to add a stage by
5347 // Stage-specific features were correctly tested for already, this is just
5348 // about the stage itself.
5350 case EShLangGeometry:
5351 if (isEsProfile() && version == 310)
5352 requireExtensions(getCurrentLoc(), Num_AEP_geometry_shader, AEP_geometry_shader, "geometry shaders");
5354 case EShLangTessControl:
5355 case EShLangTessEvaluation:
5356 if (isEsProfile() && version == 310)
5357 requireExtensions(getCurrentLoc(), Num_AEP_tessellation_shader, AEP_tessellation_shader, "tessellation shaders");
5358 else if (!isEsProfile() && version < 400)
5359 requireExtensions(getCurrentLoc(), 1, &E_GL_ARB_tessellation_shader, "tessellation shaders");
5361 case EShLangCompute:
5362 if (!isEsProfile() && version < 430)
5363 requireExtensions(getCurrentLoc(), 1, &E_GL_ARB_compute_shader, "compute shaders");
5366 requireExtensions(getCurrentLoc(), Num_AEP_mesh_shader, AEP_mesh_shader, "task shaders");
5369 requireExtensions(getCurrentLoc(), Num_AEP_mesh_shader, AEP_mesh_shader, "mesh shaders");
5375 // Set default outputs for GL_NV_geometry_shader_passthrough
5376 if (language == EShLangGeometry && extensionTurnedOn(E_SPV_NV_geometry_shader_passthrough)) {
5377 if (intermediate.getOutputPrimitive() == ElgNone) {
5378 switch (intermediate.getInputPrimitive()) {
5379 case ElgPoints: intermediate.setOutputPrimitive(ElgPoints); break;
5380 case ElgLines: intermediate.setOutputPrimitive(ElgLineStrip); break;
5381 case ElgTriangles: intermediate.setOutputPrimitive(ElgTriangleStrip); break;
5385 if (intermediate.getVertices() == TQualifier::layoutNotSet) {
5386 switch (intermediate.getInputPrimitive()) {
5387 case ElgPoints: intermediate.setVertices(1); break;
5388 case ElgLines: intermediate.setVertices(2); break;
5389 case ElgTriangles: intermediate.setVertices(3); break;
5395 #endif // GLSLANG_WEB
5398 // Layout qualifier stuff.
5401 // Put the id's layout qualification into the public type, for qualifiers not having a number set.
5402 // This is before we know any type information for error checking.
5403 void TParseContext::setLayoutQualifier(const TSourceLoc& loc, TPublicType& publicType, TString& id)
5405 std::transform(id.begin(), id.end(), id.begin(), ::tolower);
5407 if (id == TQualifier::getLayoutMatrixString(ElmColumnMajor)) {
5408 publicType.qualifier.layoutMatrix = ElmColumnMajor;
5411 if (id == TQualifier::getLayoutMatrixString(ElmRowMajor)) {
5412 publicType.qualifier.layoutMatrix = ElmRowMajor;
5415 if (id == TQualifier::getLayoutPackingString(ElpPacked)) {
5416 if (spvVersion.spv != 0) {
5417 if (spvVersion.vulkanRelaxed)
5418 return; // silently ignore qualifier
5420 spvRemoved(loc, "packed");
5422 publicType.qualifier.layoutPacking = ElpPacked;
5425 if (id == TQualifier::getLayoutPackingString(ElpShared)) {
5426 if (spvVersion.spv != 0) {
5427 if (spvVersion.vulkanRelaxed)
5428 return; // silently ignore qualifier
5430 spvRemoved(loc, "shared");
5432 publicType.qualifier.layoutPacking = ElpShared;
5435 if (id == TQualifier::getLayoutPackingString(ElpStd140)) {
5436 publicType.qualifier.layoutPacking = ElpStd140;
5440 if (id == TQualifier::getLayoutPackingString(ElpStd430)) {
5441 requireProfile(loc, EEsProfile | ECoreProfile | ECompatibilityProfile, "std430");
5442 profileRequires(loc, ECoreProfile | ECompatibilityProfile, 430, E_GL_ARB_shader_storage_buffer_object, "std430");
5443 profileRequires(loc, EEsProfile, 310, nullptr, "std430");
5444 publicType.qualifier.layoutPacking = ElpStd430;
5447 if (id == TQualifier::getLayoutPackingString(ElpScalar)) {
5448 requireVulkan(loc, "scalar");
5449 requireExtensions(loc, 1, &E_GL_EXT_scalar_block_layout, "scalar block layout");
5450 publicType.qualifier.layoutPacking = ElpScalar;
5453 // TODO: compile-time performance: may need to stop doing linear searches
5454 for (TLayoutFormat format = (TLayoutFormat)(ElfNone + 1); format < ElfCount; format = (TLayoutFormat)(format + 1)) {
5455 if (id == TQualifier::getLayoutFormatString(format)) {
5456 if ((format > ElfEsFloatGuard && format < ElfFloatGuard) ||
5457 (format > ElfEsIntGuard && format < ElfIntGuard) ||
5458 (format > ElfEsUintGuard && format < ElfCount))
5459 requireProfile(loc, ENoProfile | ECoreProfile | ECompatibilityProfile, "image load-store format");
5460 profileRequires(loc, ENoProfile | ECoreProfile | ECompatibilityProfile, 420, E_GL_ARB_shader_image_load_store, "image load store");
5461 profileRequires(loc, EEsProfile, 310, E_GL_ARB_shader_image_load_store, "image load store");
5462 publicType.qualifier.layoutFormat = format;
5466 if (id == "push_constant") {
5467 requireVulkan(loc, "push_constant");
5468 publicType.qualifier.layoutPushConstant = true;
5471 if (id == "buffer_reference") {
5472 requireVulkan(loc, "buffer_reference");
5473 requireExtensions(loc, 1, &E_GL_EXT_buffer_reference, "buffer_reference");
5474 publicType.qualifier.layoutBufferReference = true;
5475 intermediate.setUseStorageBuffer();
5476 intermediate.setUsePhysicalStorageBuffer();
5479 if (language == EShLangGeometry || language == EShLangTessEvaluation || language == EShLangMesh) {
5480 if (id == TQualifier::getGeometryString(ElgTriangles)) {
5481 publicType.shaderQualifiers.geometry = ElgTriangles;
5484 if (language == EShLangGeometry || language == EShLangMesh) {
5485 if (id == TQualifier::getGeometryString(ElgPoints)) {
5486 publicType.shaderQualifiers.geometry = ElgPoints;
5489 if (id == TQualifier::getGeometryString(ElgLines)) {
5490 publicType.shaderQualifiers.geometry = ElgLines;
5493 if (language == EShLangGeometry) {
5494 if (id == TQualifier::getGeometryString(ElgLineStrip)) {
5495 publicType.shaderQualifiers.geometry = ElgLineStrip;
5498 if (id == TQualifier::getGeometryString(ElgLinesAdjacency)) {
5499 publicType.shaderQualifiers.geometry = ElgLinesAdjacency;
5502 if (id == TQualifier::getGeometryString(ElgTrianglesAdjacency)) {
5503 publicType.shaderQualifiers.geometry = ElgTrianglesAdjacency;
5506 if (id == TQualifier::getGeometryString(ElgTriangleStrip)) {
5507 publicType.shaderQualifiers.geometry = ElgTriangleStrip;
5510 if (id == "passthrough") {
5511 requireExtensions(loc, 1, &E_SPV_NV_geometry_shader_passthrough, "geometry shader passthrough");
5512 publicType.qualifier.layoutPassthrough = true;
5513 intermediate.setGeoPassthroughEXT();
5518 assert(language == EShLangTessEvaluation);
5521 if (id == TQualifier::getGeometryString(ElgTriangles)) {
5522 publicType.shaderQualifiers.geometry = ElgTriangles;
5525 if (id == TQualifier::getGeometryString(ElgQuads)) {
5526 publicType.shaderQualifiers.geometry = ElgQuads;
5529 if (id == TQualifier::getGeometryString(ElgIsolines)) {
5530 publicType.shaderQualifiers.geometry = ElgIsolines;
5535 if (id == TQualifier::getVertexSpacingString(EvsEqual)) {
5536 publicType.shaderQualifiers.spacing = EvsEqual;
5539 if (id == TQualifier::getVertexSpacingString(EvsFractionalEven)) {
5540 publicType.shaderQualifiers.spacing = EvsFractionalEven;
5543 if (id == TQualifier::getVertexSpacingString(EvsFractionalOdd)) {
5544 publicType.shaderQualifiers.spacing = EvsFractionalOdd;
5549 if (id == TQualifier::getVertexOrderString(EvoCw)) {
5550 publicType.shaderQualifiers.order = EvoCw;
5553 if (id == TQualifier::getVertexOrderString(EvoCcw)) {
5554 publicType.shaderQualifiers.order = EvoCcw;
5559 if (id == "point_mode") {
5560 publicType.shaderQualifiers.pointMode = true;
5565 if (language == EShLangFragment) {
5566 if (id == "origin_upper_left") {
5567 requireProfile(loc, ECoreProfile | ECompatibilityProfile | ENoProfile, "origin_upper_left");
5568 if (profile == ENoProfile) {
5569 profileRequires(loc,ECoreProfile | ECompatibilityProfile, 140, E_GL_ARB_fragment_coord_conventions, "origin_upper_left");
5572 publicType.shaderQualifiers.originUpperLeft = true;
5575 if (id == "pixel_center_integer") {
5576 requireProfile(loc, ECoreProfile | ECompatibilityProfile | ENoProfile, "pixel_center_integer");
5577 if (profile == ENoProfile) {
5578 profileRequires(loc,ECoreProfile | ECompatibilityProfile, 140, E_GL_ARB_fragment_coord_conventions, "pixel_center_integer");
5580 publicType.shaderQualifiers.pixelCenterInteger = true;
5583 if (id == "early_fragment_tests") {
5584 profileRequires(loc, ENoProfile | ECoreProfile | ECompatibilityProfile, 420, E_GL_ARB_shader_image_load_store, "early_fragment_tests");
5585 profileRequires(loc, EEsProfile, 310, nullptr, "early_fragment_tests");
5586 publicType.shaderQualifiers.earlyFragmentTests = true;
5589 if (id == "early_and_late_fragment_tests_amd") {
5590 profileRequires(loc, ENoProfile | ECoreProfile | ECompatibilityProfile, 420, E_GL_AMD_shader_early_and_late_fragment_tests, "early_and_late_fragment_tests_amd");
5591 profileRequires(loc, EEsProfile, 310, nullptr, "early_and_late_fragment_tests_amd");
5592 publicType.shaderQualifiers.earlyAndLateFragmentTestsAMD = true;
5595 if (id == "post_depth_coverage") {
5596 requireExtensions(loc, Num_post_depth_coverageEXTs, post_depth_coverageEXTs, "post depth coverage");
5597 if (extensionTurnedOn(E_GL_ARB_post_depth_coverage)) {
5598 publicType.shaderQualifiers.earlyFragmentTests = true;
5600 publicType.shaderQualifiers.postDepthCoverage = true;
5603 for (TLayoutDepth depth = (TLayoutDepth)(EldNone + 1); depth < EldCount; depth = (TLayoutDepth)(depth+1)) {
5604 if (id == TQualifier::getLayoutDepthString(depth)) {
5605 requireProfile(loc, ECoreProfile | ECompatibilityProfile, "depth layout qualifier");
5606 profileRequires(loc, ECoreProfile | ECompatibilityProfile, 420, nullptr, "depth layout qualifier");
5607 publicType.shaderQualifiers.layoutDepth = depth;
5611 for (TLayoutStencil stencil = (TLayoutStencil)(ElsNone + 1); stencil < ElsCount; stencil = (TLayoutStencil)(stencil+1)) {
5612 if (id == TQualifier::getLayoutStencilString(stencil)) {
5613 requireProfile(loc, ECoreProfile | ECompatibilityProfile, "stencil layout qualifier");
5614 profileRequires(loc, ECoreProfile | ECompatibilityProfile, 420, nullptr, "stencil layout qualifier");
5615 publicType.shaderQualifiers.layoutStencil = stencil;
5619 for (TInterlockOrdering order = (TInterlockOrdering)(EioNone + 1); order < EioCount; order = (TInterlockOrdering)(order+1)) {
5620 if (id == TQualifier::getInterlockOrderingString(order)) {
5621 requireProfile(loc, ECoreProfile | ECompatibilityProfile, "fragment shader interlock layout qualifier");
5622 profileRequires(loc, ECoreProfile | ECompatibilityProfile, 450, nullptr, "fragment shader interlock layout qualifier");
5623 requireExtensions(loc, 1, &E_GL_ARB_fragment_shader_interlock, TQualifier::getInterlockOrderingString(order));
5624 if (order == EioShadingRateInterlockOrdered || order == EioShadingRateInterlockUnordered)
5625 requireExtensions(loc, 1, &E_GL_NV_shading_rate_image, TQualifier::getInterlockOrderingString(order));
5626 publicType.shaderQualifiers.interlockOrdering = order;
5630 if (id.compare(0, 13, "blend_support") == 0) {
5632 for (TBlendEquationShift be = (TBlendEquationShift)0; be < EBlendCount; be = (TBlendEquationShift)(be + 1)) {
5633 if (id == TQualifier::getBlendEquationString(be)) {
5634 profileRequires(loc, EEsProfile, 320, E_GL_KHR_blend_equation_advanced, "blend equation");
5635 profileRequires(loc, ~EEsProfile, 0, E_GL_KHR_blend_equation_advanced, "blend equation");
5636 intermediate.addBlendEquation(be);
5637 publicType.shaderQualifiers.blendEquation = true;
5643 error(loc, "unknown blend equation", "blend_support", "");
5646 if (id == "override_coverage") {
5647 requireExtensions(loc, 1, &E_GL_NV_sample_mask_override_coverage, "sample mask override coverage");
5648 publicType.shaderQualifiers.layoutOverrideCoverage = true;
5652 if (language == EShLangVertex ||
5653 language == EShLangTessControl ||
5654 language == EShLangTessEvaluation ||
5655 language == EShLangGeometry ) {
5656 if (id == "viewport_relative") {
5657 requireExtensions(loc, 1, &E_GL_NV_viewport_array2, "view port array2");
5658 publicType.qualifier.layoutViewportRelative = true;
5662 if (language == EShLangRayGen || language == EShLangIntersect ||
5663 language == EShLangAnyHit || language == EShLangClosestHit ||
5664 language == EShLangMiss || language == EShLangCallable) {
5665 if (id == "shaderrecordnv" || id == "shaderrecordext") {
5666 if (id == "shaderrecordnv") {
5667 requireExtensions(loc, 1, &E_GL_NV_ray_tracing, "shader record NV");
5669 requireExtensions(loc, 1, &E_GL_EXT_ray_tracing, "shader record EXT");
5671 publicType.qualifier.layoutShaderRecord = true;
5677 if (language == EShLangCompute) {
5678 if (id.compare(0, 17, "derivative_group_") == 0) {
5679 requireExtensions(loc, 1, &E_GL_NV_compute_shader_derivatives, "compute shader derivatives");
5680 if (id == "derivative_group_quadsnv") {
5681 publicType.shaderQualifiers.layoutDerivativeGroupQuads = true;
5683 } else if (id == "derivative_group_linearnv") {
5684 publicType.shaderQualifiers.layoutDerivativeGroupLinear = true;
5690 if (id == "primitive_culling") {
5691 requireExtensions(loc, 1, &E_GL_EXT_ray_flags_primitive_culling, "primitive culling");
5692 publicType.shaderQualifiers.layoutPrimitiveCulling = true;
5697 error(loc, "unrecognized layout identifier, or qualifier requires assignment (e.g., binding = 4)", id.c_str(), "");
5700 // Put the id's layout qualifier value into the public type, for qualifiers having a number set.
5701 // This is before we know any type information for error checking.
5702 void TParseContext::setLayoutQualifier(const TSourceLoc& loc, TPublicType& publicType, TString& id, const TIntermTyped* node)
5704 const char* feature = "layout-id value";
5705 const char* nonLiteralFeature = "non-literal layout-id value";
5707 integerCheck(node, feature);
5708 const TIntermConstantUnion* constUnion = node->getAsConstantUnion();
5710 bool nonLiteral = false;
5712 value = constUnion->getConstArray()[0].getIConst();
5713 if (! constUnion->isLiteral()) {
5714 requireProfile(loc, ECoreProfile | ECompatibilityProfile, nonLiteralFeature);
5715 profileRequires(loc, ECoreProfile | ECompatibilityProfile, 440, E_GL_ARB_enhanced_layouts, nonLiteralFeature);
5718 // grammar should have give out the error message
5724 error(loc, "cannot be negative", feature, "");
5728 std::transform(id.begin(), id.end(), id.begin(), ::tolower);
5730 if (id == "offset") {
5731 // "offset" can be for either
5732 // - uniform offsets
5733 // - atomic_uint offsets
5734 const char* feature = "offset";
5735 if (spvVersion.spv == 0) {
5736 requireProfile(loc, EEsProfile | ECoreProfile | ECompatibilityProfile, feature);
5737 const char* exts[2] = { E_GL_ARB_enhanced_layouts, E_GL_ARB_shader_atomic_counters };
5738 profileRequires(loc, ECoreProfile | ECompatibilityProfile, 420, 2, exts, feature);
5739 profileRequires(loc, EEsProfile, 310, nullptr, feature);
5741 publicType.qualifier.layoutOffset = value;
5742 publicType.qualifier.explicitOffset = true;
5744 error(loc, "needs a literal integer", "offset", "");
5746 } else if (id == "align") {
5747 const char* feature = "uniform buffer-member align";
5748 if (spvVersion.spv == 0) {
5749 requireProfile(loc, ECoreProfile | ECompatibilityProfile, feature);
5750 profileRequires(loc, ECoreProfile | ECompatibilityProfile, 440, E_GL_ARB_enhanced_layouts, feature);
5752 // "The specified alignment must be a power of 2, or a compile-time error results."
5753 if (! IsPow2(value))
5754 error(loc, "must be a power of 2", "align", "");
5756 publicType.qualifier.layoutAlign = value;
5758 error(loc, "needs a literal integer", "align", "");
5760 } else if (id == "location") {
5761 profileRequires(loc, EEsProfile, 300, nullptr, "location");
5762 const char* exts[2] = { E_GL_ARB_separate_shader_objects, E_GL_ARB_explicit_attrib_location };
5763 // GL_ARB_explicit_uniform_location requires 330 or GL_ARB_explicit_attrib_location we do not need to add it here
5764 profileRequires(loc, ~EEsProfile, 330, 2, exts, "location");
5765 if ((unsigned int)value >= TQualifier::layoutLocationEnd)
5766 error(loc, "location is too large", id.c_str(), "");
5768 publicType.qualifier.layoutLocation = value;
5770 error(loc, "needs a literal integer", "location", "");
5772 } else if (id == "set") {
5773 if ((unsigned int)value >= TQualifier::layoutSetEnd)
5774 error(loc, "set is too large", id.c_str(), "");
5776 publicType.qualifier.layoutSet = value;
5778 requireVulkan(loc, "descriptor set");
5780 error(loc, "needs a literal integer", "set", "");
5782 } else if (id == "binding") {
5784 profileRequires(loc, ~EEsProfile, 420, E_GL_ARB_shading_language_420pack, "binding");
5785 profileRequires(loc, EEsProfile, 310, nullptr, "binding");
5787 if ((unsigned int)value >= TQualifier::layoutBindingEnd)
5788 error(loc, "binding is too large", id.c_str(), "");
5790 publicType.qualifier.layoutBinding = value;
5792 error(loc, "needs a literal integer", "binding", "");
5795 if (id == "constant_id") {
5796 requireSpv(loc, "constant_id");
5797 if (value >= (int)TQualifier::layoutSpecConstantIdEnd) {
5798 error(loc, "specialization-constant id is too large", id.c_str(), "");
5800 publicType.qualifier.layoutSpecConstantId = value;
5801 publicType.qualifier.specConstant = true;
5802 if (! intermediate.addUsedConstantId(value))
5803 error(loc, "specialization-constant id already used", id.c_str(), "");
5806 error(loc, "needs a literal integer", "constant_id", "");
5810 if (id == "component") {
5811 requireProfile(loc, ECoreProfile | ECompatibilityProfile, "component");
5812 profileRequires(loc, ECoreProfile | ECompatibilityProfile, 440, E_GL_ARB_enhanced_layouts, "component");
5813 if ((unsigned)value >= TQualifier::layoutComponentEnd)
5814 error(loc, "component is too large", id.c_str(), "");
5816 publicType.qualifier.layoutComponent = value;
5818 error(loc, "needs a literal integer", "component", "");
5821 if (id.compare(0, 4, "xfb_") == 0) {
5822 // "Any shader making any static use (after preprocessing) of any of these
5823 // *xfb_* qualifiers will cause the shader to be in a transform feedback
5824 // capturing mode and hence responsible for describing the transform feedback
5826 intermediate.setXfbMode();
5827 const char* feature = "transform feedback qualifier";
5828 requireStage(loc, (EShLanguageMask)(EShLangVertexMask | EShLangGeometryMask | EShLangTessControlMask | EShLangTessEvaluationMask), feature);
5829 requireProfile(loc, ECoreProfile | ECompatibilityProfile, feature);
5830 profileRequires(loc, ECoreProfile | ECompatibilityProfile, 440, E_GL_ARB_enhanced_layouts, feature);
5831 if (id == "xfb_buffer") {
5832 // "It is a compile-time error to specify an *xfb_buffer* that is greater than
5833 // the implementation-dependent constant gl_MaxTransformFeedbackBuffers."
5834 if (value >= resources.maxTransformFeedbackBuffers)
5835 error(loc, "buffer is too large:", id.c_str(), "gl_MaxTransformFeedbackBuffers is %d", resources.maxTransformFeedbackBuffers);
5836 if (value >= (int)TQualifier::layoutXfbBufferEnd)
5837 error(loc, "buffer is too large:", id.c_str(), "internal max is %d", TQualifier::layoutXfbBufferEnd-1);
5839 publicType.qualifier.layoutXfbBuffer = value;
5841 error(loc, "needs a literal integer", "xfb_buffer", "");
5843 } else if (id == "xfb_offset") {
5844 if (value >= (int)TQualifier::layoutXfbOffsetEnd)
5845 error(loc, "offset is too large:", id.c_str(), "internal max is %d", TQualifier::layoutXfbOffsetEnd-1);
5847 publicType.qualifier.layoutXfbOffset = value;
5849 error(loc, "needs a literal integer", "xfb_offset", "");
5851 } else if (id == "xfb_stride") {
5852 // "The resulting stride (implicit or explicit), when divided by 4, must be less than or equal to the
5853 // implementation-dependent constant gl_MaxTransformFeedbackInterleavedComponents."
5854 if (value > 4 * resources.maxTransformFeedbackInterleavedComponents) {
5855 error(loc, "1/4 stride is too large:", id.c_str(), "gl_MaxTransformFeedbackInterleavedComponents is %d",
5856 resources.maxTransformFeedbackInterleavedComponents);
5858 if (value >= (int)TQualifier::layoutXfbStrideEnd)
5859 error(loc, "stride is too large:", id.c_str(), "internal max is %d", TQualifier::layoutXfbStrideEnd-1);
5861 publicType.qualifier.layoutXfbStride = value;
5863 error(loc, "needs a literal integer", "xfb_stride", "");
5867 if (id == "input_attachment_index") {
5868 requireVulkan(loc, "input_attachment_index");
5869 if (value >= (int)TQualifier::layoutAttachmentEnd)
5870 error(loc, "attachment index is too large", id.c_str(), "");
5872 publicType.qualifier.layoutAttachment = value;
5874 error(loc, "needs a literal integer", "input_attachment_index", "");
5877 if (id == "num_views") {
5878 requireExtensions(loc, Num_OVR_multiview_EXTs, OVR_multiview_EXTs, "num_views");
5879 publicType.shaderQualifiers.numViews = value;
5881 error(loc, "needs a literal integer", "num_views", "");
5884 if (language == EShLangVertex ||
5885 language == EShLangTessControl ||
5886 language == EShLangTessEvaluation ||
5887 language == EShLangGeometry) {
5888 if (id == "secondary_view_offset") {
5889 requireExtensions(loc, 1, &E_GL_NV_stereo_view_rendering, "stereo view rendering");
5890 publicType.qualifier.layoutSecondaryViewportRelativeOffset = value;
5892 error(loc, "needs a literal integer", "secondary_view_offset", "");
5897 if (id == "buffer_reference_align") {
5898 requireExtensions(loc, 1, &E_GL_EXT_buffer_reference, "buffer_reference_align");
5899 if (! IsPow2(value))
5900 error(loc, "must be a power of 2", "buffer_reference_align", "");
5902 publicType.qualifier.layoutBufferReferenceAlign = IntLog2(value);
5904 error(loc, "needs a literal integer", "buffer_reference_align", "");
5911 case EShLangTessControl:
5912 if (id == "vertices") {
5914 error(loc, "must be greater than 0", "vertices", "");
5916 publicType.shaderQualifiers.vertices = value;
5918 error(loc, "needs a literal integer", "vertices", "");
5923 case EShLangGeometry:
5924 if (id == "invocations") {
5925 profileRequires(loc, ECompatibilityProfile | ECoreProfile, 400, nullptr, "invocations");
5927 error(loc, "must be at least 1", "invocations", "");
5929 publicType.shaderQualifiers.invocations = value;
5931 error(loc, "needs a literal integer", "invocations", "");
5934 if (id == "max_vertices") {
5935 publicType.shaderQualifiers.vertices = value;
5936 if (value > resources.maxGeometryOutputVertices)
5937 error(loc, "too large, must be less than gl_MaxGeometryOutputVertices", "max_vertices", "");
5939 error(loc, "needs a literal integer", "max_vertices", "");
5942 if (id == "stream") {
5943 requireProfile(loc, ~EEsProfile, "selecting output stream");
5944 publicType.qualifier.layoutStream = value;
5946 intermediate.setMultiStream();
5948 error(loc, "needs a literal integer", "stream", "");
5953 case EShLangFragment:
5954 if (id == "index") {
5955 requireProfile(loc, ECompatibilityProfile | ECoreProfile | EEsProfile, "index layout qualifier on fragment output");
5956 const char* exts[2] = { E_GL_ARB_separate_shader_objects, E_GL_ARB_explicit_attrib_location };
5957 profileRequires(loc, ECompatibilityProfile | ECoreProfile, 330, 2, exts, "index layout qualifier on fragment output");
5958 profileRequires(loc, EEsProfile ,310, E_GL_EXT_blend_func_extended, "index layout qualifier on fragment output");
5959 // "It is also a compile-time error if a fragment shader sets a layout index to less than 0 or greater than 1."
5960 if (value < 0 || value > 1) {
5962 error(loc, "value must be 0 or 1", "index", "");
5965 publicType.qualifier.layoutIndex = value;
5967 error(loc, "needs a literal integer", "index", "");
5973 if (id == "max_vertices") {
5974 requireExtensions(loc, Num_AEP_mesh_shader, AEP_mesh_shader, "max_vertices");
5975 publicType.shaderQualifiers.vertices = value;
5976 if (value > resources.maxMeshOutputVerticesNV)
5977 error(loc, "too large, must be less than gl_MaxMeshOutputVerticesNV", "max_vertices", "");
5979 error(loc, "needs a literal integer", "max_vertices", "");
5982 if (id == "max_primitives") {
5983 requireExtensions(loc, Num_AEP_mesh_shader, AEP_mesh_shader, "max_primitives");
5984 publicType.shaderQualifiers.primitives = value;
5985 if (value > resources.maxMeshOutputPrimitivesNV)
5986 error(loc, "too large, must be less than gl_MaxMeshOutputPrimitivesNV", "max_primitives", "");
5988 error(loc, "needs a literal integer", "max_primitives", "");
5996 case EShLangCompute:
5997 if (id.compare(0, 11, "local_size_") == 0) {
5999 if (language == EShLangMesh || language == EShLangTask) {
6000 requireExtensions(loc, Num_AEP_mesh_shader, AEP_mesh_shader, "gl_WorkGroupSize");
6002 profileRequires(loc, EEsProfile, 310, 0, "gl_WorkGroupSize");
6003 profileRequires(loc, ~EEsProfile, 430, E_GL_ARB_compute_shader, "gl_WorkGroupSize");
6007 error(loc, "needs a literal integer", "local_size", "");
6008 if (id.size() == 12 && value == 0) {
6009 error(loc, "must be at least 1", id.c_str(), "");
6012 if (id == "local_size_x") {
6013 publicType.shaderQualifiers.localSize[0] = value;
6014 publicType.shaderQualifiers.localSizeNotDefault[0] = true;
6017 if (id == "local_size_y") {
6018 publicType.shaderQualifiers.localSize[1] = value;
6019 publicType.shaderQualifiers.localSizeNotDefault[1] = true;
6022 if (id == "local_size_z") {
6023 publicType.shaderQualifiers.localSize[2] = value;
6024 publicType.shaderQualifiers.localSizeNotDefault[2] = true;
6027 if (spvVersion.spv != 0) {
6028 if (id == "local_size_x_id") {
6029 publicType.shaderQualifiers.localSizeSpecId[0] = value;
6032 if (id == "local_size_y_id") {
6033 publicType.shaderQualifiers.localSizeSpecId[1] = value;
6036 if (id == "local_size_z_id") {
6037 publicType.shaderQualifiers.localSizeSpecId[2] = value;
6048 error(loc, "there is no such layout identifier for this stage taking an assigned value", id.c_str(), "");
6051 // Merge any layout qualifier information from src into dst, leaving everything else in dst alone
6053 // "More than one layout qualifier may appear in a single declaration.
6054 // Additionally, the same layout-qualifier-name can occur multiple times
6055 // within a layout qualifier or across multiple layout qualifiers in the
6056 // same declaration. When the same layout-qualifier-name occurs
6057 // multiple times, in a single declaration, the last occurrence overrides
6058 // the former occurrence(s). Further, if such a layout-qualifier-name
6059 // will effect subsequent declarations or other observable behavior, it
6060 // is only the last occurrence that will have any effect, behaving as if
6061 // the earlier occurrence(s) within the declaration are not present.
6062 // This is also true for overriding layout-qualifier-names, where one
6063 // overrides the other (e.g., row_major vs. column_major); only the last
6064 // occurrence has any effect."
6065 void TParseContext::mergeObjectLayoutQualifiers(TQualifier& dst, const TQualifier& src, bool inheritOnly)
6067 if (src.hasMatrix())
6068 dst.layoutMatrix = src.layoutMatrix;
6069 if (src.hasPacking())
6070 dst.layoutPacking = src.layoutPacking;
6073 if (src.hasStream())
6074 dst.layoutStream = src.layoutStream;
6075 if (src.hasFormat())
6076 dst.layoutFormat = src.layoutFormat;
6077 if (src.hasXfbBuffer())
6078 dst.layoutXfbBuffer = src.layoutXfbBuffer;
6079 if (src.hasBufferReferenceAlign())
6080 dst.layoutBufferReferenceAlign = src.layoutBufferReferenceAlign;
6084 dst.layoutAlign = src.layoutAlign;
6086 if (! inheritOnly) {
6087 if (src.hasLocation())
6088 dst.layoutLocation = src.layoutLocation;
6089 if (src.hasOffset())
6090 dst.layoutOffset = src.layoutOffset;
6092 dst.layoutSet = src.layoutSet;
6093 if (src.layoutBinding != TQualifier::layoutBindingEnd)
6094 dst.layoutBinding = src.layoutBinding;
6096 if (src.hasSpecConstantId())
6097 dst.layoutSpecConstantId = src.layoutSpecConstantId;
6100 if (src.hasComponent())
6101 dst.layoutComponent = src.layoutComponent;
6103 dst.layoutIndex = src.layoutIndex;
6104 if (src.hasXfbStride())
6105 dst.layoutXfbStride = src.layoutXfbStride;
6106 if (src.hasXfbOffset())
6107 dst.layoutXfbOffset = src.layoutXfbOffset;
6108 if (src.hasAttachment())
6109 dst.layoutAttachment = src.layoutAttachment;
6110 if (src.layoutPushConstant)
6111 dst.layoutPushConstant = true;
6113 if (src.layoutBufferReference)
6114 dst.layoutBufferReference = true;
6116 if (src.layoutPassthrough)
6117 dst.layoutPassthrough = true;
6118 if (src.layoutViewportRelative)
6119 dst.layoutViewportRelative = true;
6120 if (src.layoutSecondaryViewportRelativeOffset != -2048)
6121 dst.layoutSecondaryViewportRelativeOffset = src.layoutSecondaryViewportRelativeOffset;
6122 if (src.layoutShaderRecord)
6123 dst.layoutShaderRecord = true;
6124 if (src.pervertexNV)
6125 dst.pervertexNV = true;
6126 if (src.pervertexEXT)
6127 dst.pervertexEXT = true;
6132 // Do error layout error checking given a full variable/block declaration.
6133 void TParseContext::layoutObjectCheck(const TSourceLoc& loc, const TSymbol& symbol)
6135 const TType& type = symbol.getType();
6136 const TQualifier& qualifier = type.getQualifier();
6138 // first, cross check WRT to just the type
6139 layoutTypeCheck(loc, type);
6141 // now, any remaining error checking based on the object itself
6143 if (qualifier.hasAnyLocation()) {
6144 switch (qualifier.storage) {
6147 if (symbol.getAsVariable() == nullptr)
6148 error(loc, "can only be used on variable declaration", "location", "");
6155 // user-variable location check, which are required for SPIR-V in/out:
6156 // - variables have it directly,
6157 // - blocks have it on each member (already enforced), so check first one
6158 if (spvVersion.spv > 0 && !parsingBuiltins && qualifier.builtIn == EbvNone &&
6159 !qualifier.hasLocation() && !intermediate.getAutoMapLocations()) {
6161 switch (qualifier.storage) {
6164 if (!type.getQualifier().isTaskMemory() &&
6166 !type.getQualifier().hasSprivDecorate() &&
6168 (type.getBasicType() != EbtBlock ||
6169 (!(*type.getStruct())[0].type->getQualifier().hasLocation() &&
6170 (*type.getStruct())[0].type->getQualifier().builtIn == EbvNone)))
6171 error(loc, "SPIR-V requires location for user input/output", "location", "");
6178 // Check packing and matrix
6179 if (qualifier.hasUniformLayout()) {
6180 switch (qualifier.storage) {
6183 if (type.getBasicType() != EbtBlock) {
6184 if (qualifier.hasMatrix())
6185 error(loc, "cannot specify matrix layout on a variable declaration", "layout", "");
6186 if (qualifier.hasPacking())
6187 error(loc, "cannot specify packing on a variable declaration", "layout", "");
6188 // "The offset qualifier can only be used on block members of blocks..."
6189 if (qualifier.hasOffset() && !type.isAtomic())
6190 error(loc, "cannot specify on a variable declaration", "offset", "");
6191 // "The align qualifier can only be used on blocks or block members..."
6192 if (qualifier.hasAlign())
6193 error(loc, "cannot specify on a variable declaration", "align", "");
6194 if (qualifier.isPushConstant())
6195 error(loc, "can only specify on a uniform block", "push_constant", "");
6196 if (qualifier.isShaderRecord())
6197 error(loc, "can only specify on a buffer block", "shaderRecordNV", "");
6198 if (qualifier.hasLocation() && type.isAtomic())
6199 error(loc, "cannot specify on atomic counter", "location", "");
6203 // these were already filtered by layoutTypeCheck() (or its callees)
6209 // "For some blocks declared as arrays, the location can only be applied at the block level:
6210 // When a block is declared as an array where additional locations are needed for each member
6211 // for each block array element, it is a compile-time error to specify locations on the block
6212 // members. That is, when locations would be under specified by applying them on block members,
6213 // they are not allowed on block members. For arrayed interfaces (those generally having an
6214 // extra level of arrayness due to interface expansion), the outer array is stripped before
6215 // applying this rule."
6216 void TParseContext::layoutMemberLocationArrayCheck(const TSourceLoc& loc, bool memberWithLocation,
6217 TArraySizes* arraySizes)
6219 if (memberWithLocation && arraySizes != nullptr) {
6220 if (arraySizes->getNumDims() > (currentBlockQualifier.isArrayedIo(language) ? 1 : 0))
6221 error(loc, "cannot use in a block array where new locations are needed for each block element",
6226 // Do layout error checking with respect to a type.
6227 void TParseContext::layoutTypeCheck(const TSourceLoc& loc, const TType& type)
6230 if (extensionTurnedOn(E_GL_EXT_spirv_intrinsics))
6231 return; // Skip any check if GL_EXT_spirv_intrinsics is turned on
6234 const TQualifier& qualifier = type.getQualifier();
6236 // first, intra-layout qualifier-only error checking
6237 layoutQualifierCheck(loc, qualifier);
6239 // now, error checking combining type and qualifier
6241 if (qualifier.hasAnyLocation()) {
6242 if (qualifier.hasLocation()) {
6243 if (qualifier.storage == EvqVaryingOut && language == EShLangFragment) {
6244 if (qualifier.layoutLocation >= (unsigned int)resources.maxDrawBuffers)
6245 error(loc, "too large for fragment output", "location", "");
6248 if (qualifier.hasComponent()) {
6249 // "It is a compile-time error if this sequence of components gets larger than 3."
6250 if (qualifier.layoutComponent + type.getVectorSize() * (type.getBasicType() == EbtDouble ? 2 : 1) > 4)
6251 error(loc, "type overflows the available 4 components", "component", "");
6253 // "It is a compile-time error to apply the component qualifier to a matrix, a structure, a block, or an array containing any of these."
6254 if (type.isMatrix() || type.getBasicType() == EbtBlock || type.getBasicType() == EbtStruct)
6255 error(loc, "cannot apply to a matrix, structure, or block", "component", "");
6257 // " It is a compile-time error to use component 1 or 3 as the beginning of a double or dvec2."
6258 if (type.getBasicType() == EbtDouble)
6259 if (qualifier.layoutComponent & 1)
6260 error(loc, "doubles cannot start on an odd-numbered component", "component", "");
6263 switch (qualifier.storage) {
6266 if (type.getBasicType() == EbtBlock)
6267 profileRequires(loc, ECoreProfile | ECompatibilityProfile, 440, E_GL_ARB_enhanced_layouts, "location qualifier on in/out block");
6268 if (type.getQualifier().isTaskMemory())
6269 error(loc, "cannot apply to taskNV in/out blocks", "location", "");
6273 if (type.getBasicType() == EbtBlock)
6274 error(loc, "cannot apply to uniform or buffer block", "location", "");
6276 case EvqtaskPayloadSharedEXT:
6277 error(loc, "cannot apply to taskPayloadSharedEXT", "location", "");
6283 case EvqCallableData:
6284 case EvqCallableDataIn:
6288 error(loc, "can only apply to uniform, buffer, in, or out storage qualifiers", "location", "");
6293 int repeated = intermediate.addUsedLocation(qualifier, type, typeCollision);
6294 if (repeated >= 0 && ! typeCollision)
6295 error(loc, "overlapping use of location", "location", "%d", repeated);
6296 // "fragment-shader outputs ... if two variables are placed within the same
6297 // location, they must have the same underlying type (floating-point or integer)"
6298 if (typeCollision && language == EShLangFragment && qualifier.isPipeOutput())
6299 error(loc, "fragment outputs sharing the same location must be the same basic type", "location", "%d", repeated);
6303 if (qualifier.hasXfbOffset() && qualifier.hasXfbBuffer()) {
6304 if (type.isUnsizedArray()) {
6305 error(loc, "unsized array", "xfb_offset", "in buffer %d", qualifier.layoutXfbBuffer);
6307 int repeated = intermediate.addXfbBufferOffset(type);
6309 error(loc, "overlapping offsets at", "xfb_offset", "offset %d in buffer %d", repeated, qualifier.layoutXfbBuffer);
6312 // "The offset must be a multiple of the size of the first component of the first
6313 // qualified variable or block member, or a compile-time error results. Further, if applied to an aggregate
6314 // containing a double or 64-bit integer, the offset must also be a multiple of 8..."
6315 if ((type.containsBasicType(EbtDouble) || type.containsBasicType(EbtInt64) || type.containsBasicType(EbtUint64)) &&
6316 ! IsMultipleOfPow2(qualifier.layoutXfbOffset, 8))
6317 error(loc, "type contains double or 64-bit integer; xfb_offset must be a multiple of 8", "xfb_offset", "");
6318 else if ((type.containsBasicType(EbtBool) || type.containsBasicType(EbtFloat) ||
6319 type.containsBasicType(EbtInt) || type.containsBasicType(EbtUint)) &&
6320 ! IsMultipleOfPow2(qualifier.layoutXfbOffset, 4))
6321 error(loc, "must be a multiple of size of first component", "xfb_offset", "");
6322 // ..., if applied to an aggregate containing a half float or 16-bit integer, the offset must also be a multiple of 2..."
6323 else if ((type.contains16BitFloat() || type.containsBasicType(EbtInt16) || type.containsBasicType(EbtUint16)) &&
6324 !IsMultipleOfPow2(qualifier.layoutXfbOffset, 2))
6325 error(loc, "type contains half float or 16-bit integer; xfb_offset must be a multiple of 2", "xfb_offset", "");
6327 if (qualifier.hasXfbStride() && qualifier.hasXfbBuffer()) {
6328 if (! intermediate.setXfbBufferStride(qualifier.layoutXfbBuffer, qualifier.layoutXfbStride))
6329 error(loc, "all stride settings must match for xfb buffer", "xfb_stride", "%d", qualifier.layoutXfbBuffer);
6333 if (qualifier.hasBinding()) {
6334 // Binding checking, from the spec:
6336 // "If the binding point for any uniform or shader storage block instance is less than zero, or greater than or
6337 // equal to the implementation-dependent maximum number of uniform buffer bindings, a compile-time
6338 // error will occur. When the binding identifier is used with a uniform or shader storage block instanced as
6339 // an array of size N, all elements of the array from binding through binding + N - 1 must be within this
6342 if (! type.isOpaque() && type.getBasicType() != EbtBlock)
6343 error(loc, "requires block, or sampler/image, or atomic-counter type", "binding", "");
6344 if (type.getBasicType() == EbtSampler) {
6345 int lastBinding = qualifier.layoutBinding;
6346 if (type.isArray()) {
6347 if (spvVersion.vulkan == 0) {
6348 if (type.isSizedArray())
6349 lastBinding += (type.getCumulativeArraySize() - 1);
6352 warn(loc, "assuming binding count of one for compile-time checking of binding numbers for unsized array", "[]", "");
6358 if (spvVersion.vulkan == 0 && lastBinding >= resources.maxCombinedTextureImageUnits)
6359 error(loc, "sampler binding not less than gl_MaxCombinedTextureImageUnits", "binding", type.isArray() ? "(using array)" : "");
6362 if (type.isAtomic() && !spvVersion.vulkanRelaxed) {
6363 if (qualifier.layoutBinding >= (unsigned int)resources.maxAtomicCounterBindings) {
6364 error(loc, "atomic_uint binding is too large; see gl_MaxAtomicCounterBindings", "binding", "");
6368 } else if (!intermediate.getAutoMapBindings()) {
6369 // some types require bindings
6372 if (type.isAtomic())
6373 error(loc, "layout(binding=X) is required", "atomic_uint", "");
6376 if (spvVersion.spv > 0) {
6377 if (qualifier.isUniformOrBuffer()) {
6378 if (type.getBasicType() == EbtBlock && !qualifier.isPushConstant() &&
6379 !qualifier.isShaderRecord() &&
6380 !qualifier.hasAttachment() &&
6381 !qualifier.hasBufferReference())
6382 error(loc, "uniform/buffer blocks require layout(binding=X)", "binding", "");
6383 else if (spvVersion.vulkan > 0 && type.getBasicType() == EbtSampler)
6384 error(loc, "sampler/texture/image requires layout(binding=X)", "binding", "");
6389 // some things can't have arrays of arrays
6390 if (type.isArrayOfArrays()) {
6391 if (spvVersion.vulkan > 0) {
6392 if (type.isOpaque() || (type.getQualifier().isUniformOrBuffer() && type.getBasicType() == EbtBlock))
6393 warn(loc, "Generating SPIR-V array-of-arrays, but Vulkan only supports single array level for this resource", "[][]", "");
6397 // "The offset qualifier can only be used on block members of blocks..."
6398 if (qualifier.hasOffset()) {
6399 if (type.getBasicType() == EbtBlock)
6400 error(loc, "only applies to block members, not blocks", "offset", "");
6404 if (qualifier.hasFormat()) {
6405 if (! type.isImage())
6406 error(loc, "only apply to images", TQualifier::getLayoutFormatString(qualifier.getFormat()), "");
6408 if (type.getSampler().type == EbtFloat && qualifier.getFormat() > ElfFloatGuard)
6409 error(loc, "does not apply to floating point images", TQualifier::getLayoutFormatString(qualifier.getFormat()), "");
6410 if (type.getSampler().type == EbtInt && (qualifier.getFormat() < ElfFloatGuard || qualifier.getFormat() > ElfIntGuard))
6411 error(loc, "does not apply to signed integer images", TQualifier::getLayoutFormatString(qualifier.getFormat()), "");
6412 if (type.getSampler().type == EbtUint && qualifier.getFormat() < ElfIntGuard)
6413 error(loc, "does not apply to unsigned integer images", TQualifier::getLayoutFormatString(qualifier.getFormat()), "");
6415 if (isEsProfile()) {
6416 // "Except for image variables qualified with the format qualifiers r32f, r32i, and r32ui, image variables must
6417 // specify either memory qualifier readonly or the memory qualifier writeonly."
6418 if (! (qualifier.getFormat() == ElfR32f || qualifier.getFormat() == ElfR32i || qualifier.getFormat() == ElfR32ui)) {
6419 if (! qualifier.isReadOnly() && ! qualifier.isWriteOnly())
6420 error(loc, "format requires readonly or writeonly memory qualifier", TQualifier::getLayoutFormatString(qualifier.getFormat()), "");
6424 } else if (type.isImage() && ! qualifier.isWriteOnly()) {
6425 const char *explanation = "image variables not declared 'writeonly' and without a format layout qualifier";
6426 requireProfile(loc, ECoreProfile | ECompatibilityProfile, explanation);
6427 profileRequires(loc, ECoreProfile | ECompatibilityProfile, 0, E_GL_EXT_shader_image_load_formatted, explanation);
6430 if (qualifier.isPushConstant()) {
6431 if (type.getBasicType() != EbtBlock)
6432 error(loc, "can only be used with a block", "push_constant", "");
6434 error(loc, "Push constants blocks can't be an array", "push_constant", "");
6437 if (qualifier.hasBufferReference() && type.getBasicType() != EbtBlock)
6438 error(loc, "can only be used with a block", "buffer_reference", "");
6440 if (qualifier.isShaderRecord() && type.getBasicType() != EbtBlock)
6441 error(loc, "can only be used with a block", "shaderRecordNV", "");
6444 if (type.isSubpass()) {
6445 if (! qualifier.hasAttachment())
6446 error(loc, "requires an input_attachment_index layout qualifier", "subpass", "");
6448 if (qualifier.hasAttachment())
6449 error(loc, "can only be used with a subpass", "input_attachment_index", "");
6452 // specialization-constant id
6453 if (qualifier.hasSpecConstantId()) {
6454 if (type.getQualifier().storage != EvqConst)
6455 error(loc, "can only be applied to 'const'-qualified scalar", "constant_id", "");
6456 if (! type.isScalar())
6457 error(loc, "can only be applied to a scalar", "constant_id", "");
6458 switch (type.getBasicType())
6474 error(loc, "cannot be applied to this type", "constant_id", "");
6480 static bool storageCanHaveLayoutInBlock(const enum TStorageQualifier storage)
6492 // Do layout error checking that can be done within a layout qualifier proper, not needing to know
6493 // if there are blocks, atomic counters, variables, etc.
6494 void TParseContext::layoutQualifierCheck(const TSourceLoc& loc, const TQualifier& qualifier)
6496 if (qualifier.storage == EvqShared && qualifier.hasLayout()) {
6497 if (spvVersion.spv > 0 && spvVersion.spv < EShTargetSpv_1_4) {
6498 error(loc, "shared block requires at least SPIR-V 1.4", "shared block", "");
6500 profileRequires(loc, EEsProfile | ECoreProfile | ECompatibilityProfile, 0, E_GL_EXT_shared_memory_block, "shared block");
6503 // "It is a compile-time error to use *component* without also specifying the location qualifier (order does not matter)."
6504 if (qualifier.hasComponent() && ! qualifier.hasLocation())
6505 error(loc, "must specify 'location' to use 'component'", "component", "");
6507 if (qualifier.hasAnyLocation()) {
6509 // "As with input layout qualifiers, all shaders except compute shaders
6510 // allow *location* layout qualifiers on output variable declarations,
6511 // output block declarations, and output block member declarations."
6513 switch (qualifier.storage) {
6517 const char* feature = "location qualifier on input";
6518 if (isEsProfile() && version < 310)
6519 requireStage(loc, EShLangVertex, feature);
6521 requireStage(loc, (EShLanguageMask)~EShLangComputeMask, feature);
6522 if (language == EShLangVertex) {
6523 const char* exts[2] = { E_GL_ARB_separate_shader_objects, E_GL_ARB_explicit_attrib_location };
6524 profileRequires(loc, ~EEsProfile, 330, 2, exts, feature);
6525 profileRequires(loc, EEsProfile, 300, nullptr, feature);
6527 profileRequires(loc, ~EEsProfile, 410, E_GL_ARB_separate_shader_objects, feature);
6528 profileRequires(loc, EEsProfile, 310, nullptr, feature);
6534 const char* feature = "location qualifier on output";
6535 if (isEsProfile() && version < 310)
6536 requireStage(loc, EShLangFragment, feature);
6538 requireStage(loc, (EShLanguageMask)~EShLangComputeMask, feature);
6539 if (language == EShLangFragment) {
6540 const char* exts[2] = { E_GL_ARB_separate_shader_objects, E_GL_ARB_explicit_attrib_location };
6541 profileRequires(loc, ~EEsProfile, 330, 2, exts, feature);
6542 profileRequires(loc, EEsProfile, 300, nullptr, feature);
6544 profileRequires(loc, ~EEsProfile, 410, E_GL_ARB_separate_shader_objects, feature);
6545 profileRequires(loc, EEsProfile, 310, nullptr, feature);
6553 const char* feature = "location qualifier on uniform or buffer";
6554 requireProfile(loc, EEsProfile | ECoreProfile | ECompatibilityProfile | ENoProfile, feature);
6555 profileRequires(loc, ~EEsProfile, 330, E_GL_ARB_explicit_attrib_location, feature);
6556 profileRequires(loc, ~EEsProfile, 430, E_GL_ARB_explicit_uniform_location, feature);
6557 profileRequires(loc, EEsProfile, 310, nullptr, feature);
6563 if (qualifier.hasIndex()) {
6564 if (qualifier.storage != EvqVaryingOut)
6565 error(loc, "can only be used on an output", "index", "");
6566 if (! qualifier.hasLocation())
6567 error(loc, "can only be used with an explicit location", "index", "");
6571 if (qualifier.hasBinding()) {
6572 if (! qualifier.isUniformOrBuffer() && !qualifier.isTaskMemory())
6573 error(loc, "requires uniform or buffer storage qualifier", "binding", "");
6575 if (qualifier.hasStream()) {
6576 if (!qualifier.isPipeOutput())
6577 error(loc, "can only be used on an output", "stream", "");
6579 if (qualifier.hasXfb()) {
6580 if (!qualifier.isPipeOutput())
6581 error(loc, "can only be used on an output", "xfb layout qualifier", "");
6583 if (qualifier.hasUniformLayout()) {
6584 if (!storageCanHaveLayoutInBlock(qualifier.storage) && !qualifier.isTaskMemory()) {
6585 if (qualifier.hasMatrix() || qualifier.hasPacking())
6586 error(loc, "matrix or packing qualifiers can only be used on a uniform or buffer", "layout", "");
6587 if (qualifier.hasOffset() || qualifier.hasAlign())
6588 error(loc, "offset/align can only be used on a uniform or buffer", "layout", "");
6591 if (qualifier.isPushConstant()) {
6592 if (qualifier.storage != EvqUniform)
6593 error(loc, "can only be used with a uniform", "push_constant", "");
6594 if (qualifier.hasSet())
6595 error(loc, "cannot be used with push_constant", "set", "");
6596 if (qualifier.hasBinding())
6597 error(loc, "cannot be used with push_constant", "binding", "");
6599 if (qualifier.hasBufferReference()) {
6600 if (qualifier.storage != EvqBuffer)
6601 error(loc, "can only be used with buffer", "buffer_reference", "");
6603 if (qualifier.isShaderRecord()) {
6604 if (qualifier.storage != EvqBuffer)
6605 error(loc, "can only be used with a buffer", "shaderRecordNV", "");
6606 if (qualifier.hasBinding())
6607 error(loc, "cannot be used with shaderRecordNV", "binding", "");
6608 if (qualifier.hasSet())
6609 error(loc, "cannot be used with shaderRecordNV", "set", "");
6612 if (qualifier.storage == EvqHitAttr && qualifier.hasLayout()) {
6613 error(loc, "cannot apply layout qualifiers to hitAttributeNV variable", "hitAttributeNV", "");
6617 // For places that can't have shader-level layout qualifiers
6618 void TParseContext::checkNoShaderLayouts(const TSourceLoc& loc, const TShaderQualifiers& shaderQualifiers)
6621 const char* message = "can only apply to a standalone qualifier";
6623 if (shaderQualifiers.geometry != ElgNone)
6624 error(loc, message, TQualifier::getGeometryString(shaderQualifiers.geometry), "");
6625 if (shaderQualifiers.spacing != EvsNone)
6626 error(loc, message, TQualifier::getVertexSpacingString(shaderQualifiers.spacing), "");
6627 if (shaderQualifiers.order != EvoNone)
6628 error(loc, message, TQualifier::getVertexOrderString(shaderQualifiers.order), "");
6629 if (shaderQualifiers.pointMode)
6630 error(loc, message, "point_mode", "");
6631 if (shaderQualifiers.invocations != TQualifier::layoutNotSet)
6632 error(loc, message, "invocations", "");
6633 for (int i = 0; i < 3; ++i) {
6634 if (shaderQualifiers.localSize[i] > 1)
6635 error(loc, message, "local_size", "");
6636 if (shaderQualifiers.localSizeSpecId[i] != TQualifier::layoutNotSet)
6637 error(loc, message, "local_size id", "");
6639 if (shaderQualifiers.vertices != TQualifier::layoutNotSet) {
6640 if (language == EShLangGeometry || language == EShLangMesh)
6641 error(loc, message, "max_vertices", "");
6642 else if (language == EShLangTessControl)
6643 error(loc, message, "vertices", "");
6647 if (shaderQualifiers.earlyFragmentTests)
6648 error(loc, message, "early_fragment_tests", "");
6649 if (shaderQualifiers.postDepthCoverage)
6650 error(loc, message, "post_depth_coverage", "");
6651 if (shaderQualifiers.primitives != TQualifier::layoutNotSet) {
6652 if (language == EShLangMesh)
6653 error(loc, message, "max_primitives", "");
6657 if (shaderQualifiers.hasBlendEquation())
6658 error(loc, message, "blend equation", "");
6659 if (shaderQualifiers.numViews != TQualifier::layoutNotSet)
6660 error(loc, message, "num_views", "");
6661 if (shaderQualifiers.interlockOrdering != EioNone)
6662 error(loc, message, TQualifier::getInterlockOrderingString(shaderQualifiers.interlockOrdering), "");
6663 if (shaderQualifiers.layoutPrimitiveCulling)
6664 error(loc, "can only be applied as standalone", "primitive_culling", "");
6668 // Correct and/or advance an object's offset layout qualifier.
6669 void TParseContext::fixOffset(const TSourceLoc& loc, TSymbol& symbol)
6671 const TQualifier& qualifier = symbol.getType().getQualifier();
6673 if (symbol.getType().isAtomic()) {
6674 if (qualifier.hasBinding() && (int)qualifier.layoutBinding < resources.maxAtomicCounterBindings) {
6678 if (qualifier.hasOffset())
6679 offset = qualifier.layoutOffset;
6681 offset = atomicUintOffsets[qualifier.layoutBinding];
6683 if (offset % 4 != 0)
6684 error(loc, "atomic counters offset should align based on 4:", "offset", "%d", offset);
6686 symbol.getWritableType().getQualifier().layoutOffset = offset;
6688 // Check for overlap
6690 if (symbol.getType().isArray()) {
6691 if (symbol.getType().isSizedArray() && !symbol.getType().getArraySizes()->isInnerUnsized())
6692 numOffsets *= symbol.getType().getCumulativeArraySize();
6694 // "It is a compile-time error to declare an unsized array of atomic_uint."
6695 error(loc, "array must be explicitly sized", "atomic_uint", "");
6698 int repeated = intermediate.addUsedOffsets(qualifier.layoutBinding, offset, numOffsets);
6700 error(loc, "atomic counters sharing the same offset:", "offset", "%d", repeated);
6702 // Bump the default offset
6703 atomicUintOffsets[qualifier.layoutBinding] = offset + numOffsets;
6710 // Look up a function name in the symbol table, and make sure it is a function.
6712 // Return the function symbol if found, otherwise nullptr.
6714 const TFunction* TParseContext::findFunction(const TSourceLoc& loc, const TFunction& call, bool& builtIn)
6716 if (symbolTable.isFunctionNameVariable(call.getName())) {
6717 error(loc, "can't use function syntax on variable", call.getName().c_str(), "");
6722 return findFunctionExact(loc, call, builtIn);
6725 const TFunction* function = nullptr;
6727 // debugPrintfEXT has var args and is in the symbol table as "debugPrintfEXT()",
6728 // mangled to "debugPrintfEXT("
6729 if (call.getName() == "debugPrintfEXT") {
6730 TSymbol* symbol = symbolTable.find("debugPrintfEXT(", &builtIn);
6732 return symbol->getAsFunction();
6735 bool explicitTypesEnabled = extensionTurnedOn(E_GL_EXT_shader_explicit_arithmetic_types) ||
6736 extensionTurnedOn(E_GL_EXT_shader_explicit_arithmetic_types_int8) ||
6737 extensionTurnedOn(E_GL_EXT_shader_explicit_arithmetic_types_int16) ||
6738 extensionTurnedOn(E_GL_EXT_shader_explicit_arithmetic_types_int32) ||
6739 extensionTurnedOn(E_GL_EXT_shader_explicit_arithmetic_types_int64) ||
6740 extensionTurnedOn(E_GL_EXT_shader_explicit_arithmetic_types_float16) ||
6741 extensionTurnedOn(E_GL_EXT_shader_explicit_arithmetic_types_float32) ||
6742 extensionTurnedOn(E_GL_EXT_shader_explicit_arithmetic_types_float64);
6745 function = (explicitTypesEnabled && version >= 310)
6746 ? findFunctionExplicitTypes(loc, call, builtIn)
6747 : ((extensionTurnedOn(E_GL_EXT_shader_implicit_conversions) && version >= 310)
6748 ? findFunction120(loc, call, builtIn)
6749 : findFunctionExact(loc, call, builtIn));
6750 else if (version < 120)
6751 function = findFunctionExact(loc, call, builtIn);
6752 else if (version < 400) {
6753 bool needfindFunction400 = extensionTurnedOn(E_GL_ARB_gpu_shader_fp64) || extensionTurnedOn(E_GL_ARB_gpu_shader5);
6754 function = needfindFunction400 ? findFunction400(loc, call, builtIn) : findFunction120(loc, call, builtIn);
6756 else if (explicitTypesEnabled)
6757 function = findFunctionExplicitTypes(loc, call, builtIn);
6759 function = findFunction400(loc, call, builtIn);
6764 // Function finding algorithm for ES and desktop 110.
6765 const TFunction* TParseContext::findFunctionExact(const TSourceLoc& loc, const TFunction& call, bool& builtIn)
6767 TSymbol* symbol = symbolTable.find(call.getMangledName(), &builtIn);
6768 if (symbol == nullptr) {
6769 error(loc, "no matching overloaded function found", call.getName().c_str(), "");
6774 return symbol->getAsFunction();
6777 // Function finding algorithm for desktop versions 120 through 330.
6778 const TFunction* TParseContext::findFunction120(const TSourceLoc& loc, const TFunction& call, bool& builtIn)
6780 // first, look for an exact match
6781 TSymbol* symbol = symbolTable.find(call.getMangledName(), &builtIn);
6783 return symbol->getAsFunction();
6785 // exact match not found, look through a list of overloaded functions of the same name
6787 // "If no exact match is found, then [implicit conversions] will be applied to find a match. Mismatched types
6788 // on input parameters (in or inout or default) must have a conversion from the calling argument type to the
6789 // formal parameter type. Mismatched types on output parameters (out or inout) must have a conversion
6790 // from the formal parameter type to the calling argument type. When argument conversions are used to find
6791 // a match, it is a semantic error if there are multiple ways to apply these conversions to make the call match
6792 // more than one function."
6794 const TFunction* candidate = nullptr;
6795 TVector<const TFunction*> candidateList;
6796 symbolTable.findFunctionNameList(call.getMangledName(), candidateList, builtIn);
6798 for (auto it = candidateList.begin(); it != candidateList.end(); ++it) {
6799 const TFunction& function = *(*it);
6801 // to even be a potential match, number of arguments has to match
6802 if (call.getParamCount() != function.getParamCount())
6805 bool possibleMatch = true;
6806 for (int i = 0; i < function.getParamCount(); ++i) {
6807 // same types is easy
6808 if (*function[i].type == *call[i].type)
6811 // We have a mismatch in type, see if it is implicitly convertible
6813 if (function[i].type->isArray() || call[i].type->isArray() ||
6814 ! function[i].type->sameElementShape(*call[i].type))
6815 possibleMatch = false;
6817 // do direction-specific checks for conversion of basic type
6818 if (function[i].type->getQualifier().isParamInput()) {
6819 if (! intermediate.canImplicitlyPromote(call[i].type->getBasicType(), function[i].type->getBasicType()))
6820 possibleMatch = false;
6822 if (function[i].type->getQualifier().isParamOutput()) {
6823 if (! intermediate.canImplicitlyPromote(function[i].type->getBasicType(), call[i].type->getBasicType()))
6824 possibleMatch = false;
6827 if (! possibleMatch)
6830 if (possibleMatch) {
6832 // our second match, meaning ambiguity
6833 error(loc, "ambiguous function signature match: multiple signatures match under implicit type conversion", call.getName().c_str(), "");
6835 candidate = &function;
6839 if (candidate == nullptr)
6840 error(loc, "no matching overloaded function found", call.getName().c_str(), "");
6845 // Function finding algorithm for desktop version 400 and above.
6847 // "When function calls are resolved, an exact type match for all the arguments
6848 // is sought. If an exact match is found, all other functions are ignored, and
6849 // the exact match is used. If no exact match is found, then the implicit
6850 // conversions in section 4.1.10 Implicit Conversions will be applied to find
6851 // a match. Mismatched types on input parameters (in or inout or default) must
6852 // have a conversion from the calling argument type to the formal parameter type.
6853 // Mismatched types on output parameters (out or inout) must have a conversion
6854 // from the formal parameter type to the calling argument type.
6856 // "If implicit conversions can be used to find more than one matching function,
6857 // a single best-matching function is sought. To determine a best match, the
6858 // conversions between calling argument and formal parameter types are compared
6859 // for each function argument and pair of matching functions. After these
6860 // comparisons are performed, each pair of matching functions are compared.
6861 // A function declaration A is considered a better match than function
6864 // * for at least one function argument, the conversion for that argument in A
6865 // is better than the corresponding conversion in B; and
6866 // * there is no function argument for which the conversion in B is better than
6867 // the corresponding conversion in A.
6869 // "If a single function declaration is considered a better match than every
6870 // other matching function declaration, it will be used. Otherwise, a
6871 // compile-time semantic error for an ambiguous overloaded function call occurs.
6873 // "To determine whether the conversion for a single argument in one match is
6874 // better than that for another match, the following rules are applied, in order:
6876 // 1. An exact match is better than a match involving any implicit conversion.
6877 // 2. A match involving an implicit conversion from float to double is better
6878 // than a match involving any other implicit conversion.
6879 // 3. A match involving an implicit conversion from either int or uint to float
6880 // is better than a match involving an implicit conversion from either int
6881 // or uint to double.
6883 // "If none of the rules above apply to a particular pair of conversions, neither
6884 // conversion is considered better than the other."
6886 const TFunction* TParseContext::findFunction400(const TSourceLoc& loc, const TFunction& call, bool& builtIn)
6888 // first, look for an exact match
6889 TSymbol* symbol = symbolTable.find(call.getMangledName(), &builtIn);
6891 return symbol->getAsFunction();
6893 // no exact match, use the generic selector, parameterized by the GLSL rules
6895 // create list of candidates to send
6896 TVector<const TFunction*> candidateList;
6897 symbolTable.findFunctionNameList(call.getMangledName(), candidateList, builtIn);
6899 // can 'from' convert to 'to'?
6900 const auto convertible = [this,builtIn](const TType& from, const TType& to, TOperator, int) -> bool {
6903 if (from.coopMatParameterOK(to))
6905 // Allow a sized array to be passed through an unsized array parameter, for coopMatLoad/Store functions
6906 if (builtIn && from.isArray() && to.isUnsizedArray()) {
6907 TType fromElementType(from, 0);
6908 TType toElementType(to, 0);
6909 if (fromElementType == toElementType)
6912 if (from.isArray() || to.isArray() || ! from.sameElementShape(to))
6914 if (from.isCoopMat() && to.isCoopMat())
6915 return from.sameCoopMatBaseType(to);
6916 return intermediate.canImplicitlyPromote(from.getBasicType(), to.getBasicType());
6919 // Is 'to2' a better conversion than 'to1'?
6920 // Ties should not be considered as better.
6921 // Assumes 'convertible' already said true.
6922 const auto better = [](const TType& from, const TType& to1, const TType& to2) -> bool {
6929 // 2. float -> double is better
6930 if (from.getBasicType() == EbtFloat) {
6931 if (to2.getBasicType() == EbtDouble && to1.getBasicType() != EbtDouble)
6935 // 3. -> float is better than -> double
6936 return to2.getBasicType() == EbtFloat && to1.getBasicType() == EbtDouble;
6939 // for ambiguity reporting
6942 // send to the generic selector
6943 const TFunction* bestMatch = selectFunction(candidateList, call, convertible, better, tie);
6945 if (bestMatch == nullptr)
6946 error(loc, "no matching overloaded function found", call.getName().c_str(), "");
6948 error(loc, "ambiguous best function under implicit type conversion", call.getName().c_str(), "");
6953 // "To determine whether the conversion for a single argument in one match
6954 // is better than that for another match, the conversion is assigned of the
6955 // three ranks ordered from best to worst:
6956 // 1. Exact match: no conversion.
6957 // 2. Promotion: integral or floating-point promotion.
6958 // 3. Conversion: integral conversion, floating-point conversion,
6959 // floating-integral conversion.
6960 // A conversion C1 is better than a conversion C2 if the rank of C1 is
6961 // better than the rank of C2."
6962 const TFunction* TParseContext::findFunctionExplicitTypes(const TSourceLoc& loc, const TFunction& call, bool& builtIn)
6964 // first, look for an exact match
6965 TSymbol* symbol = symbolTable.find(call.getMangledName(), &builtIn);
6967 return symbol->getAsFunction();
6969 // no exact match, use the generic selector, parameterized by the GLSL rules
6971 // create list of candidates to send
6972 TVector<const TFunction*> candidateList;
6973 symbolTable.findFunctionNameList(call.getMangledName(), candidateList, builtIn);
6975 // can 'from' convert to 'to'?
6976 const auto convertible = [this,builtIn](const TType& from, const TType& to, TOperator, int) -> bool {
6979 if (from.coopMatParameterOK(to))
6981 // Allow a sized array to be passed through an unsized array parameter, for coopMatLoad/Store functions
6982 if (builtIn && from.isArray() && to.isUnsizedArray()) {
6983 TType fromElementType(from, 0);
6984 TType toElementType(to, 0);
6985 if (fromElementType == toElementType)
6988 if (from.isArray() || to.isArray() || ! from.sameElementShape(to))
6990 if (from.isCoopMat() && to.isCoopMat())
6991 return from.sameCoopMatBaseType(to);
6992 return intermediate.canImplicitlyPromote(from.getBasicType(), to.getBasicType());
6995 // Is 'to2' a better conversion than 'to1'?
6996 // Ties should not be considered as better.
6997 // Assumes 'convertible' already said true.
6998 const auto better = [this](const TType& from, const TType& to1, const TType& to2) -> bool {
7005 // 2. Promotion (integral, floating-point) is better
7006 TBasicType from_type = from.getBasicType();
7007 TBasicType to1_type = to1.getBasicType();
7008 TBasicType to2_type = to2.getBasicType();
7009 bool isPromotion1 = (intermediate.isIntegralPromotion(from_type, to1_type) ||
7010 intermediate.isFPPromotion(from_type, to1_type));
7011 bool isPromotion2 = (intermediate.isIntegralPromotion(from_type, to2_type) ||
7012 intermediate.isFPPromotion(from_type, to2_type));
7014 return !isPromotion1;
7018 // 3. Conversion (integral, floating-point , floating-integral)
7019 bool isConversion1 = (intermediate.isIntegralConversion(from_type, to1_type) ||
7020 intermediate.isFPConversion(from_type, to1_type) ||
7021 intermediate.isFPIntegralConversion(from_type, to1_type));
7022 bool isConversion2 = (intermediate.isIntegralConversion(from_type, to2_type) ||
7023 intermediate.isFPConversion(from_type, to2_type) ||
7024 intermediate.isFPIntegralConversion(from_type, to2_type));
7026 return isConversion2 && !isConversion1;
7029 // for ambiguity reporting
7032 // send to the generic selector
7033 const TFunction* bestMatch = selectFunction(candidateList, call, convertible, better, tie);
7035 if (bestMatch == nullptr)
7036 error(loc, "no matching overloaded function found", call.getName().c_str(), "");
7038 error(loc, "ambiguous best function under implicit type conversion", call.getName().c_str(), "");
7044 // Adjust function calls that aren't declared in Vulkan to a
7045 // calls with equivalent effects
7047 TIntermTyped* TParseContext::vkRelaxedRemapFunctionCall(const TSourceLoc& loc, TFunction* function, TIntermNode* arguments)
7049 TIntermTyped* result = nullptr;
7052 if (function->getBuiltInOp() != EOpNull) {
7056 if (function->getName() == "atomicCounterIncrement") {
7057 // change atomicCounterIncrement into an atomicAdd of 1
7058 TString name("atomicAdd");
7059 TType uintType(EbtUint);
7061 TFunction realFunc(&name, function->getType());
7063 // Use copyParam to avoid shared ownership of the 'type' field
7064 // of the parameter.
7065 for (int i = 0; i < function->getParamCount(); ++i) {
7066 realFunc.addParameter(TParameter().copyParam((*function)[i]));
7069 TParameter tmpP = { 0, &uintType };
7070 realFunc.addParameter(TParameter().copyParam(tmpP));
7071 arguments = intermediate.growAggregate(arguments, intermediate.addConstantUnion(1, loc, true));
7073 result = handleFunctionCall(loc, &realFunc, arguments);
7074 } else if (function->getName() == "atomicCounterDecrement") {
7075 // change atomicCounterDecrement into an atomicAdd with -1
7076 // and subtract 1 from result, to return post-decrement value
7077 TString name("atomicAdd");
7078 TType uintType(EbtUint);
7080 TFunction realFunc(&name, function->getType());
7082 for (int i = 0; i < function->getParamCount(); ++i) {
7083 realFunc.addParameter(TParameter().copyParam((*function)[i]));
7086 TParameter tmpP = { 0, &uintType };
7087 realFunc.addParameter(TParameter().copyParam(tmpP));
7088 arguments = intermediate.growAggregate(arguments, intermediate.addConstantUnion(-1, loc, true));
7090 result = handleFunctionCall(loc, &realFunc, arguments);
7092 // post decrement, so that it matches AtomicCounterDecrement semantics
7094 result = handleBinaryMath(loc, "-", EOpSub, result, intermediate.addConstantUnion(1, loc, true));
7096 } else if (function->getName() == "atomicCounter") {
7097 // change atomicCounter into a direct read of the variable
7098 if (arguments->getAsTyped()) {
7099 result = arguments->getAsTyped();
7107 // When a declaration includes a type, but not a variable name, it can be used
7108 // to establish defaults.
7109 void TParseContext::declareTypeDefaults(const TSourceLoc& loc, const TPublicType& publicType)
7112 if (publicType.basicType == EbtAtomicUint && publicType.qualifier.hasBinding()) {
7113 if (publicType.qualifier.layoutBinding >= (unsigned int)resources.maxAtomicCounterBindings) {
7114 error(loc, "atomic_uint binding is too large", "binding", "");
7117 if (publicType.qualifier.hasOffset())
7118 atomicUintOffsets[publicType.qualifier.layoutBinding] = publicType.qualifier.layoutOffset;
7122 if (publicType.arraySizes) {
7123 error(loc, "expect an array name", "", "");
7126 if (publicType.qualifier.hasLayout() && !publicType.qualifier.hasBufferReference())
7127 warn(loc, "useless application of layout qualifier", "layout", "");
7131 bool TParseContext::vkRelaxedRemapUniformVariable(const TSourceLoc& loc, TString& identifier, const TPublicType&,
7132 TArraySizes*, TIntermTyped* initializer, TType& type)
7134 if (parsingBuiltins || symbolTable.atBuiltInLevel() || !symbolTable.atGlobalLevel() ||
7135 type.getQualifier().storage != EvqUniform ||
7136 !(type.containsNonOpaque()
7138 || type.getBasicType() == EbtAtomicUint
7144 if (type.getQualifier().hasLocation()) {
7145 warn(loc, "ignoring layout qualifier for uniform", identifier.c_str(), "location");
7146 type.getQualifier().layoutLocation = TQualifier::layoutLocationEnd;
7150 warn(loc, "Ignoring initializer for uniform", identifier.c_str(), "");
7151 initializer = nullptr;
7154 if (type.isArray()) {
7155 // do array size checks here
7156 arraySizesCheck(loc, type.getQualifier(), type.getArraySizes(), initializer, false);
7158 if (arrayQualifierError(loc, type.getQualifier()) || arrayError(loc, type)) {
7159 error(loc, "array param error", identifier.c_str(), "");
7163 // do some checking on the type as it was declared
7164 layoutTypeCheck(loc, type);
7166 int bufferBinding = TQualifier::layoutBindingEnd;
7167 TVariable* updatedBlock = nullptr;
7170 // Convert atomic_uint into members of a buffer block
7171 if (type.isAtomic()) {
7172 type.setBasicType(EbtUint);
7173 type.getQualifier().storage = EvqBuffer;
7175 type.getQualifier().volatil = true;
7176 type.getQualifier().coherent = true;
7178 // xxTODO: use logic from fixOffset() to apply explicit member offset
7179 bufferBinding = type.getQualifier().layoutBinding;
7180 type.getQualifier().layoutBinding = TQualifier::layoutBindingEnd;
7181 type.getQualifier().explicitOffset = false;
7182 growAtomicCounterBlock(bufferBinding, loc, type, identifier, nullptr);
7183 updatedBlock = atomicCounterBuffers[bufferBinding];
7187 if (!updatedBlock) {
7188 growGlobalUniformBlock(loc, type, identifier, nullptr);
7189 updatedBlock = globalUniformBlock;
7193 // don't assign explicit member offsets here
7194 // if any are assigned, need to be updated here and in the merge/link step
7195 // fixBlockUniformOffsets(updatedBlock->getWritableType().getQualifier(), *updatedBlock->getWritableType().getWritableStruct());
7197 // checks on update buffer object
7198 layoutObjectCheck(loc, *updatedBlock);
7200 TSymbol* symbol = symbolTable.find(identifier);
7203 if (updatedBlock == globalUniformBlock)
7204 error(loc, "error adding uniform to default uniform block", identifier.c_str(), "");
7206 error(loc, "error adding atomic counter to atomic counter block", identifier.c_str(), "");
7211 mergeObjectLayoutQualifiers(updatedBlock->getWritableType().getQualifier(), type.getQualifier(), true);
7217 // Do everything necessary to handle a variable (non-block) declaration.
7218 // Either redeclaring a variable, or making a new one, updating the symbol
7219 // table, and all error checking.
7221 // Returns a subtree node that computes an initializer, if needed.
7222 // Returns nullptr if there is no code to execute for initialization.
7224 // 'publicType' is the type part of the declaration (to the left)
7225 // 'arraySizes' is the arrayness tagged on the identifier (to the right)
7227 TIntermNode* TParseContext::declareVariable(const TSourceLoc& loc, TString& identifier, const TPublicType& publicType,
7228 TArraySizes* arraySizes, TIntermTyped* initializer)
7230 // Make a fresh type that combines the characteristics from the individual
7231 // identifier syntax and the declaration-type syntax.
7232 TType type(publicType);
7233 type.transferArraySizes(arraySizes);
7234 type.copyArrayInnerSizes(publicType.arraySizes);
7235 arrayOfArrayVersionCheck(loc, type.getArraySizes());
7238 if (type.getBasicType() == EbtRayQuery) {
7239 error(loc, "ray queries can only be initialized by using the rayQueryInitializeEXT intrinsic:", "=", identifier.c_str());
7243 if (type.isCoopMat()) {
7244 intermediate.setUseVulkanMemoryModel();
7245 intermediate.setUseStorageBuffer();
7247 if (!publicType.typeParameters || publicType.typeParameters->getNumDims() != 4) {
7248 error(loc, "expected four type parameters", identifier.c_str(), "");
7250 if (publicType.typeParameters) {
7251 if (isTypeFloat(publicType.basicType) &&
7252 publicType.typeParameters->getDimSize(0) != 16 &&
7253 publicType.typeParameters->getDimSize(0) != 32 &&
7254 publicType.typeParameters->getDimSize(0) != 64) {
7255 error(loc, "expected 16, 32, or 64 bits for first type parameter", identifier.c_str(), "");
7257 if (isTypeInt(publicType.basicType) &&
7258 publicType.typeParameters->getDimSize(0) != 8 &&
7259 publicType.typeParameters->getDimSize(0) != 32) {
7260 error(loc, "expected 8 or 32 bits for first type parameter", identifier.c_str(), "");
7265 if (publicType.typeParameters && publicType.typeParameters->getNumDims() != 0) {
7266 error(loc, "unexpected type parameters", identifier.c_str(), "");
7270 if (voidErrorCheck(loc, identifier, type.getBasicType()))
7274 rValueErrorCheck(loc, "initializer", initializer);
7276 nonInitConstCheck(loc, identifier, type);
7278 samplerCheck(loc, type, identifier, initializer);
7279 transparentOpaqueCheck(loc, type, identifier);
7281 atomicUintCheck(loc, type, identifier);
7282 accStructCheck(loc, type, identifier);
7283 checkAndResizeMeshViewDim(loc, type, /*isBlockMember*/ false);
7285 if (type.getQualifier().storage == EvqConst && type.containsReference()) {
7286 error(loc, "variables with reference type can't have qualifier 'const'", "qualifier", "");
7289 if (type.getQualifier().storage != EvqUniform && type.getQualifier().storage != EvqBuffer) {
7290 if (type.contains16BitFloat())
7291 requireFloat16Arithmetic(loc, "qualifier", "float16 types can only be in uniform block or buffer storage");
7292 if (type.contains16BitInt())
7293 requireInt16Arithmetic(loc, "qualifier", "(u)int16 types can only be in uniform block or buffer storage");
7294 if (type.contains8BitInt())
7295 requireInt8Arithmetic(loc, "qualifier", "(u)int8 types can only be in uniform block or buffer storage");
7298 if (type.getQualifier().storage == EvqtaskPayloadSharedEXT)
7299 intermediate.addTaskPayloadEXTCount();
7300 if (type.getQualifier().storage == EvqShared && type.containsCoopMat())
7301 error(loc, "qualifier", "Cooperative matrix types must not be used in shared memory", "");
7303 if (profile == EEsProfile) {
7304 if (type.getQualifier().isPipeInput() && type.getBasicType() == EbtStruct) {
7305 if (type.getQualifier().isArrayedIo(language)) {
7306 TType perVertexType(type, 0);
7307 if (perVertexType.containsArray() && perVertexType.containsBuiltIn() == false) {
7308 error(loc, "A per vertex structure containing an array is not allowed as input in ES", type.getTypeName().c_str(), "");
7311 else if (type.containsArray() && type.containsBuiltIn() == false) {
7312 error(loc, "A structure containing an array is not allowed as input in ES", type.getTypeName().c_str(), "");
7314 if (type.containsStructure())
7315 error(loc, "A structure containing an struct is not allowed as input in ES", type.getTypeName().c_str(), "");
7319 if (identifier != "gl_FragCoord" && (publicType.shaderQualifiers.originUpperLeft || publicType.shaderQualifiers.pixelCenterInteger))
7320 error(loc, "can only apply origin_upper_left and pixel_center_origin to gl_FragCoord", "layout qualifier", "");
7321 if (identifier != "gl_FragDepth" && publicType.shaderQualifiers.getDepth() != EldNone)
7322 error(loc, "can only apply depth layout to gl_FragDepth", "layout qualifier", "");
7323 if (identifier != "gl_FragStencilRefARB" && publicType.shaderQualifiers.getStencil() != ElsNone)
7324 error(loc, "can only apply depth layout to gl_FragStencilRefARB", "layout qualifier", "");
7326 // Check for redeclaration of built-ins and/or attempting to declare a reserved name
7327 TSymbol* symbol = redeclareBuiltinVariable(loc, identifier, type.getQualifier(), publicType.shaderQualifiers);
7328 if (symbol == nullptr)
7329 reservedErrorCheck(loc, identifier);
7331 if (symbol == nullptr && spvVersion.vulkan > 0 && spvVersion.vulkanRelaxed) {
7332 bool remapped = vkRelaxedRemapUniformVariable(loc, identifier, publicType, arraySizes, initializer, type);
7339 inheritGlobalDefaults(type.getQualifier());
7341 // Declare the variable
7342 if (type.isArray()) {
7343 // Check that implicit sizing is only where allowed.
7344 arraySizesCheck(loc, type.getQualifier(), type.getArraySizes(), initializer, false);
7346 if (! arrayQualifierError(loc, type.getQualifier()) && ! arrayError(loc, type))
7347 declareArray(loc, identifier, type, symbol);
7350 profileRequires(loc, ENoProfile, 120, E_GL_3DL_array_objects, "initializer");
7351 profileRequires(loc, EEsProfile, 300, nullptr, "initializer");
7355 if (symbol == nullptr)
7356 symbol = declareNonArray(loc, identifier, type);
7357 else if (type != symbol->getType())
7358 error(loc, "cannot change the type of", "redeclaration", symbol->getName().c_str());
7361 if (symbol == nullptr)
7364 // Deal with initializer
7365 TIntermNode* initNode = nullptr;
7366 if (symbol != nullptr && initializer) {
7367 TVariable* variable = symbol->getAsVariable();
7369 error(loc, "initializer requires a variable, not a member", identifier.c_str(), "");
7372 initNode = executeInitializer(loc, initializer, variable);
7375 // look for errors in layout qualifier use
7376 layoutObjectCheck(loc, *symbol);
7379 fixOffset(loc, *symbol);
7384 // Pick up global defaults from the provide global defaults into dst.
7385 void TParseContext::inheritGlobalDefaults(TQualifier& dst) const
7388 if (dst.storage == EvqVaryingOut) {
7389 if (! dst.hasStream() && language == EShLangGeometry)
7390 dst.layoutStream = globalOutputDefaults.layoutStream;
7391 if (! dst.hasXfbBuffer())
7392 dst.layoutXfbBuffer = globalOutputDefaults.layoutXfbBuffer;
7398 // Make an internal-only variable whose name is for debug purposes only
7399 // and won't be searched for. Callers will only use the return value to use
7400 // the variable, not the name to look it up. It is okay if the name
7401 // is the same as other names; there won't be any conflict.
7403 TVariable* TParseContext::makeInternalVariable(const char* name, const TType& type) const
7405 TString* nameString = NewPoolTString(name);
7406 TVariable* variable = new TVariable(nameString, type);
7407 symbolTable.makeInternalVariable(*variable);
7413 // Declare a non-array variable, the main point being there is no redeclaration
7414 // for resizing allowed.
7416 // Return the successfully declared variable.
7418 TVariable* TParseContext::declareNonArray(const TSourceLoc& loc, const TString& identifier, const TType& type)
7420 // make a new variable
7421 TVariable* variable = new TVariable(&identifier, type);
7424 ioArrayCheck(loc, type, identifier);
7427 // add variable to symbol table
7428 if (symbolTable.insert(*variable)) {
7429 if (symbolTable.atGlobalLevel())
7430 trackLinkage(*variable);
7434 error(loc, "redefinition", variable->getName().c_str(), "");
7439 // Handle all types of initializers from the grammar.
7441 // Returning nullptr just means there is no code to execute to handle the
7442 // initializer, which will, for example, be the case for constant initializers.
7444 TIntermNode* TParseContext::executeInitializer(const TSourceLoc& loc, TIntermTyped* initializer, TVariable* variable)
7446 // A null initializer is an aggregate that hasn't had an op assigned yet
7447 // (still EOpNull, no relation to nullInit), and has no children.
7448 bool nullInit = initializer->getAsAggregate() && initializer->getAsAggregate()->getOp() == EOpNull &&
7449 initializer->getAsAggregate()->getSequence().size() == 0;
7452 // Identifier must be of type constant, a global, or a temporary, and
7453 // starting at version 120, desktop allows uniforms to have initializers.
7455 TStorageQualifier qualifier = variable->getType().getQualifier().storage;
7456 if (! (qualifier == EvqTemporary || qualifier == EvqGlobal || qualifier == EvqConst ||
7457 (qualifier == EvqUniform && !isEsProfile() && version >= 120))) {
7458 if (qualifier == EvqShared) {
7459 // GL_EXT_null_initializer allows this for shared, if it's a null initializer
7461 const char* feature = "initialization with shared qualifier";
7462 profileRequires(loc, EEsProfile, 0, E_GL_EXT_null_initializer, feature);
7463 profileRequires(loc, ~EEsProfile, 0, E_GL_EXT_null_initializer, feature);
7465 error(loc, "initializer can only be a null initializer ('{}')", "shared", "");
7468 error(loc, " cannot initialize this type of qualifier ",
7469 variable->getType().getStorageQualifierString(), "");
7475 // only some types can be null initialized
7476 if (variable->getType().containsUnsizedArray()) {
7477 error(loc, "null initializers can't size unsized arrays", "{}", "");
7480 if (variable->getType().containsOpaque()) {
7481 error(loc, "null initializers can't be used on opaque values", "{}", "");
7484 variable->getWritableType().getQualifier().setNullInit();
7488 arrayObjectCheck(loc, variable->getType(), "array initializer");
7491 // If the initializer was from braces { ... }, we convert the whole subtree to a
7492 // constructor-style subtree, allowing the rest of the code to operate
7493 // identically for both kinds of initializers.
7495 // Type can't be deduced from the initializer list, so a skeletal type to
7496 // follow has to be passed in. Constness and specialization-constness
7497 // should be deduced bottom up, not dictated by the skeletal type.
7500 skeletalType.shallowCopy(variable->getType());
7501 skeletalType.getQualifier().makeTemporary();
7503 initializer = convertInitializerList(loc, skeletalType, initializer);
7505 if (! initializer) {
7506 // error recovery; don't leave const without constant values
7507 if (qualifier == EvqConst)
7508 variable->getWritableType().getQualifier().makeTemporary();
7512 // Fix outer arrayness if variable is unsized, getting size from the initializer
7513 if (initializer->getType().isSizedArray() && variable->getType().isUnsizedArray())
7514 variable->getWritableType().changeOuterArraySize(initializer->getType().getOuterArraySize());
7516 // Inner arrayness can also get set by an initializer
7517 if (initializer->getType().isArrayOfArrays() && variable->getType().isArrayOfArrays() &&
7518 initializer->getType().getArraySizes()->getNumDims() ==
7519 variable->getType().getArraySizes()->getNumDims()) {
7520 // adopt unsized sizes from the initializer's sizes
7521 for (int d = 1; d < variable->getType().getArraySizes()->getNumDims(); ++d) {
7522 if (variable->getType().getArraySizes()->getDimSize(d) == UnsizedArraySize) {
7523 variable->getWritableType().getArraySizes()->setDimSize(d,
7524 initializer->getType().getArraySizes()->getDimSize(d));
7529 // Uniforms require a compile-time constant initializer
7530 if (qualifier == EvqUniform && ! initializer->getType().getQualifier().isFrontEndConstant()) {
7531 error(loc, "uniform initializers must be constant", "=", "'%s'",
7532 variable->getType().getCompleteString(intermediate.getEnhancedMsgs()).c_str());
7533 variable->getWritableType().getQualifier().makeTemporary();
7536 // Global consts require a constant initializer (specialization constant is okay)
7537 if (qualifier == EvqConst && symbolTable.atGlobalLevel() && ! initializer->getType().getQualifier().isConstant()) {
7538 error(loc, "global const initializers must be constant", "=", "'%s'",
7539 variable->getType().getCompleteString(intermediate.getEnhancedMsgs()).c_str());
7540 variable->getWritableType().getQualifier().makeTemporary();
7544 // Const variables require a constant initializer, depending on version
7545 if (qualifier == EvqConst) {
7546 if (! initializer->getType().getQualifier().isConstant()) {
7547 const char* initFeature = "non-constant initializer";
7548 requireProfile(loc, ~EEsProfile, initFeature);
7549 profileRequires(loc, ~EEsProfile, 420, E_GL_ARB_shading_language_420pack, initFeature);
7550 variable->getWritableType().getQualifier().storage = EvqConstReadOnly;
7551 qualifier = EvqConstReadOnly;
7554 // Non-const global variables in ES need a const initializer.
7556 // "In declarations of global variables with no storage qualifier or with a const
7557 // qualifier any initializer must be a constant expression."
7558 if (symbolTable.atGlobalLevel() && ! initializer->getType().getQualifier().isConstant()) {
7559 const char* initFeature =
7560 "non-constant global initializer (needs GL_EXT_shader_non_constant_global_initializers)";
7561 if (isEsProfile()) {
7562 if (relaxedErrors() && ! extensionTurnedOn(E_GL_EXT_shader_non_constant_global_initializers))
7563 warn(loc, "not allowed in this version", initFeature, "");
7565 profileRequires(loc, EEsProfile, 0, E_GL_EXT_shader_non_constant_global_initializers, initFeature);
7570 if (qualifier == EvqConst || qualifier == EvqUniform) {
7571 // Compile-time tagging of the variable with its constant value...
7573 initializer = intermediate.addConversion(EOpAssign, variable->getType(), initializer);
7574 if (! initializer || ! initializer->getType().getQualifier().isConstant() ||
7575 variable->getType() != initializer->getType()) {
7576 error(loc, "non-matching or non-convertible constant type for const initializer",
7577 variable->getType().getStorageQualifierString(), "");
7578 variable->getWritableType().getQualifier().makeTemporary();
7582 // We either have a folded constant in getAsConstantUnion, or we have to use
7583 // the initializer's subtree in the AST to represent the computation of a
7584 // specialization constant.
7585 assert(initializer->getAsConstantUnion() || initializer->getType().getQualifier().isSpecConstant());
7586 if (initializer->getAsConstantUnion())
7587 variable->setConstArray(initializer->getAsConstantUnion()->getConstArray());
7589 // It's a specialization constant.
7590 variable->getWritableType().getQualifier().makeSpecConstant();
7592 // Keep the subtree that computes the specialization constant with the variable.
7593 // Later, a symbol node will adopt the subtree from the variable.
7594 variable->setConstSubtree(initializer);
7597 // normal assigning of a value to a variable...
7598 specializationCheck(loc, initializer->getType(), "initializer");
7599 TIntermSymbol* intermSymbol = intermediate.addSymbol(*variable, loc);
7600 TIntermTyped* initNode = intermediate.addAssign(EOpAssign, intermSymbol, initializer, loc);
7602 assignError(loc, "=", intermSymbol->getCompleteString(intermediate.getEnhancedMsgs()), initializer->getCompleteString(intermediate.getEnhancedMsgs()));
7611 // Reprocess any initializer-list (the "{ ... }" syntax) parts of the
7614 // Need to hierarchically assign correct types and implicit
7615 // conversions. Will do this mimicking the same process used for
7616 // creating a constructor-style initializer, ensuring we get the
7617 // same form. However, it has to in parallel walk the 'type'
7618 // passed in, as type cannot be deduced from an initializer list.
7620 TIntermTyped* TParseContext::convertInitializerList(const TSourceLoc& loc, const TType& type, TIntermTyped* initializer)
7622 // Will operate recursively. Once a subtree is found that is constructor style,
7623 // everything below it is already good: Only the "top part" of the initializer
7624 // can be an initializer list, where "top part" can extend for several (or all) levels.
7626 // see if we have bottomed out in the tree within the initializer-list part
7627 TIntermAggregate* initList = initializer->getAsAggregate();
7628 if (! initList || initList->getOp() != EOpNull)
7631 // Of the initializer-list set of nodes, need to process bottom up,
7632 // so recurse deep, then process on the way up.
7634 // Go down the tree here...
7635 if (type.isArray()) {
7636 // The type's array might be unsized, which could be okay, so base sizes on the size of the aggregate.
7637 // Later on, initializer execution code will deal with array size logic.
7639 arrayType.shallowCopy(type); // sharing struct stuff is fine
7640 arrayType.copyArraySizes(*type.getArraySizes()); // but get a fresh copy of the array information, to edit below
7642 // edit array sizes to fill in unsized dimensions
7643 arrayType.changeOuterArraySize((int)initList->getSequence().size());
7644 TIntermTyped* firstInit = initList->getSequence()[0]->getAsTyped();
7645 if (arrayType.isArrayOfArrays() && firstInit->getType().isArray() &&
7646 arrayType.getArraySizes()->getNumDims() == firstInit->getType().getArraySizes()->getNumDims() + 1) {
7647 for (int d = 1; d < arrayType.getArraySizes()->getNumDims(); ++d) {
7648 if (arrayType.getArraySizes()->getDimSize(d) == UnsizedArraySize)
7649 arrayType.getArraySizes()->setDimSize(d, firstInit->getType().getArraySizes()->getDimSize(d - 1));
7653 TType elementType(arrayType, 0); // dereferenced type
7654 for (size_t i = 0; i < initList->getSequence().size(); ++i) {
7655 initList->getSequence()[i] = convertInitializerList(loc, elementType, initList->getSequence()[i]->getAsTyped());
7656 if (initList->getSequence()[i] == nullptr)
7660 return addConstructor(loc, initList, arrayType);
7661 } else if (type.isStruct()) {
7662 if (type.getStruct()->size() != initList->getSequence().size()) {
7663 error(loc, "wrong number of structure members", "initializer list", "");
7666 for (size_t i = 0; i < type.getStruct()->size(); ++i) {
7667 initList->getSequence()[i] = convertInitializerList(loc, *(*type.getStruct())[i].type, initList->getSequence()[i]->getAsTyped());
7668 if (initList->getSequence()[i] == nullptr)
7671 } else if (type.isMatrix()) {
7672 if (type.getMatrixCols() != (int)initList->getSequence().size()) {
7673 error(loc, "wrong number of matrix columns:", "initializer list", type.getCompleteString(intermediate.getEnhancedMsgs()).c_str());
7676 TType vectorType(type, 0); // dereferenced type
7677 for (int i = 0; i < type.getMatrixCols(); ++i) {
7678 initList->getSequence()[i] = convertInitializerList(loc, vectorType, initList->getSequence()[i]->getAsTyped());
7679 if (initList->getSequence()[i] == nullptr)
7682 } else if (type.isVector()) {
7683 if (type.getVectorSize() != (int)initList->getSequence().size()) {
7684 error(loc, "wrong vector size (or rows in a matrix column):", "initializer list", type.getCompleteString(intermediate.getEnhancedMsgs()).c_str());
7687 TBasicType destType = type.getBasicType();
7688 for (int i = 0; i < type.getVectorSize(); ++i) {
7689 TBasicType initType = initList->getSequence()[i]->getAsTyped()->getBasicType();
7690 if (destType != initType && !intermediate.canImplicitlyPromote(initType, destType)) {
7691 error(loc, "type mismatch in initializer list", "initializer list", type.getCompleteString(intermediate.getEnhancedMsgs()).c_str());
7697 error(loc, "unexpected initializer-list type:", "initializer list", type.getCompleteString(intermediate.getEnhancedMsgs()).c_str());
7701 // Now that the subtree is processed, process this node as if the
7702 // initializer list is a set of arguments to a constructor.
7703 TIntermNode* emulatedConstructorArguments;
7704 if (initList->getSequence().size() == 1)
7705 emulatedConstructorArguments = initList->getSequence()[0];
7707 emulatedConstructorArguments = initList;
7708 return addConstructor(loc, emulatedConstructorArguments, type);
7712 // Test for the correctness of the parameters passed to various constructor functions
7713 // and also convert them to the right data type, if allowed and required.
7715 // 'node' is what to construct from.
7716 // 'type' is what type to construct.
7718 // Returns nullptr for an error or the constructed node (aggregate or typed) for no error.
7720 TIntermTyped* TParseContext::addConstructor(const TSourceLoc& loc, TIntermNode* node, const TType& type)
7722 if (node == nullptr || node->getAsTyped() == nullptr)
7724 rValueErrorCheck(loc, "constructor", node->getAsTyped());
7726 TIntermAggregate* aggrNode = node->getAsAggregate();
7727 TOperator op = intermediate.mapTypeToConstructorOp(type);
7729 // Combined texture-sampler constructors are completely semantic checked
7730 // in constructorTextureSamplerError()
7731 if (op == EOpConstructTextureSampler) {
7732 if (aggrNode->getSequence()[1]->getAsTyped()->getType().getSampler().shadow) {
7733 // Transfer depth into the texture (SPIR-V image) type, as a hint
7734 // for tools to know this texture/image is a depth image.
7735 aggrNode->getSequence()[0]->getAsTyped()->getWritableType().getSampler().shadow = true;
7737 return intermediate.setAggregateOperator(aggrNode, op, type, loc);
7740 TTypeList::const_iterator memberTypes;
7741 if (op == EOpConstructStruct)
7742 memberTypes = type.getStruct()->begin();
7745 if (type.isArray()) {
7746 TType dereferenced(type, 0);
7747 elementType.shallowCopy(dereferenced);
7749 elementType.shallowCopy(type);
7753 if (aggrNode->getOp() != EOpNull)
7760 TIntermTyped *newNode;
7762 // If structure constructor or array constructor is being called
7763 // for only one parameter inside the structure, we need to call constructAggregate function once.
7765 newNode = constructAggregate(node, elementType, 1, node->getLoc());
7766 else if (op == EOpConstructStruct)
7767 newNode = constructAggregate(node, *(*memberTypes).type, 1, node->getLoc());
7769 newNode = constructBuiltIn(type, op, node->getAsTyped(), node->getLoc(), false);
7771 if (newNode && (type.isArray() || op == EOpConstructStruct))
7772 newNode = intermediate.setAggregateOperator(newNode, EOpConstructStruct, type, loc);
7778 // Handle list of arguments.
7780 TIntermSequence &sequenceVector = aggrNode->getSequence(); // Stores the information about the parameter to the constructor
7781 // if the structure constructor contains more than one parameter, then construct
7784 int paramCount = 0; // keeps track of the constructor parameter number being checked
7786 // for each parameter to the constructor call, check to see if the right type is passed or convert them
7787 // to the right type if possible (and allowed).
7788 // for structure constructors, just check if the right type is passed, no conversion is allowed.
7789 for (TIntermSequence::iterator p = sequenceVector.begin();
7790 p != sequenceVector.end(); p++, paramCount++) {
7792 newNode = constructAggregate(*p, elementType, paramCount+1, node->getLoc());
7793 else if (op == EOpConstructStruct)
7794 newNode = constructAggregate(*p, *(memberTypes[paramCount]).type, paramCount+1, node->getLoc());
7796 newNode = constructBuiltIn(type, op, (*p)->getAsTyped(), node->getLoc(), true);
7804 TIntermTyped *ret_node = intermediate.setAggregateOperator(aggrNode, op, type, loc);
7806 TIntermAggregate *agg_node = ret_node->getAsAggregate();
7807 if (agg_node && (agg_node->isVector() || agg_node->isArray() || agg_node->isMatrix()))
7808 agg_node->updatePrecision();
7813 // Function for constructor implementation. Calls addUnaryMath with appropriate EOp value
7814 // for the parameter to the constructor (passed to this function). Essentially, it converts
7815 // the parameter types correctly. If a constructor expects an int (like ivec2) and is passed a
7816 // float, then float is converted to int.
7818 // Returns nullptr for an error or the constructed node.
7820 TIntermTyped* TParseContext::constructBuiltIn(const TType& type, TOperator op, TIntermTyped* node, const TSourceLoc& loc,
7823 // If we are changing a matrix in both domain of basic type and to a non matrix,
7824 // do the shape change first (by default, below, basic type is changed before shape).
7825 // This avoids requesting a matrix of a new type that is going to be discarded anyway.
7826 // TODO: This could be generalized to more type combinations, but that would require
7827 // more extensive testing and full algorithm rework. For now, the need to do two changes makes
7828 // the recursive call work, and avoids the most egregious case of creating integer matrices.
7829 if (node->getType().isMatrix() && (type.isScalar() || type.isVector()) &&
7830 type.isFloatingDomain() != node->getType().isFloatingDomain()) {
7831 TType transitionType(node->getBasicType(), glslang::EvqTemporary, type.getVectorSize(), 0, 0, node->isVector());
7832 TOperator transitionOp = intermediate.mapTypeToConstructorOp(transitionType);
7833 node = constructBuiltIn(transitionType, transitionOp, node, loc, false);
7836 TIntermTyped* newNode;
7840 // First, convert types as needed.
7843 case EOpConstructVec2:
7844 case EOpConstructVec3:
7845 case EOpConstructVec4:
7846 case EOpConstructMat2x2:
7847 case EOpConstructMat2x3:
7848 case EOpConstructMat2x4:
7849 case EOpConstructMat3x2:
7850 case EOpConstructMat3x3:
7851 case EOpConstructMat3x4:
7852 case EOpConstructMat4x2:
7853 case EOpConstructMat4x3:
7854 case EOpConstructMat4x4:
7855 case EOpConstructFloat:
7856 basicOp = EOpConstructFloat;
7859 case EOpConstructIVec2:
7860 case EOpConstructIVec3:
7861 case EOpConstructIVec4:
7862 case EOpConstructInt:
7863 basicOp = EOpConstructInt;
7866 case EOpConstructUVec2:
7867 if (node->getType().getBasicType() == EbtReference) {
7868 requireExtensions(loc, 1, &E_GL_EXT_buffer_reference_uvec2, "reference conversion to uvec2");
7869 TIntermTyped* newNode = intermediate.addBuiltInFunctionCall(node->getLoc(), EOpConvPtrToUvec2, true, node,
7873 case EOpConstructUVec3:
7874 case EOpConstructUVec4:
7875 case EOpConstructUint:
7876 basicOp = EOpConstructUint;
7879 case EOpConstructBVec2:
7880 case EOpConstructBVec3:
7881 case EOpConstructBVec4:
7882 case EOpConstructBool:
7883 basicOp = EOpConstructBool;
7888 case EOpConstructDVec2:
7889 case EOpConstructDVec3:
7890 case EOpConstructDVec4:
7891 case EOpConstructDMat2x2:
7892 case EOpConstructDMat2x3:
7893 case EOpConstructDMat2x4:
7894 case EOpConstructDMat3x2:
7895 case EOpConstructDMat3x3:
7896 case EOpConstructDMat3x4:
7897 case EOpConstructDMat4x2:
7898 case EOpConstructDMat4x3:
7899 case EOpConstructDMat4x4:
7900 case EOpConstructDouble:
7901 basicOp = EOpConstructDouble;
7904 case EOpConstructF16Vec2:
7905 case EOpConstructF16Vec3:
7906 case EOpConstructF16Vec4:
7907 case EOpConstructF16Mat2x2:
7908 case EOpConstructF16Mat2x3:
7909 case EOpConstructF16Mat2x4:
7910 case EOpConstructF16Mat3x2:
7911 case EOpConstructF16Mat3x3:
7912 case EOpConstructF16Mat3x4:
7913 case EOpConstructF16Mat4x2:
7914 case EOpConstructF16Mat4x3:
7915 case EOpConstructF16Mat4x4:
7916 case EOpConstructFloat16:
7917 basicOp = EOpConstructFloat16;
7918 // 8/16-bit storage extensions don't support constructing composites of 8/16-bit types,
7919 // so construct a 32-bit type and convert
7920 if (!intermediate.getArithemeticFloat16Enabled()) {
7921 TType tempType(EbtFloat, EvqTemporary, type.getVectorSize());
7923 if (tempType != newNode->getType()) {
7924 TOperator aggregateOp;
7925 if (op == EOpConstructFloat16)
7926 aggregateOp = EOpConstructFloat;
7928 aggregateOp = (TOperator)(EOpConstructVec2 + op - EOpConstructF16Vec2);
7929 newNode = intermediate.setAggregateOperator(newNode, aggregateOp, tempType, node->getLoc());
7931 newNode = intermediate.addConversion(EbtFloat16, newNode);
7936 case EOpConstructI8Vec2:
7937 case EOpConstructI8Vec3:
7938 case EOpConstructI8Vec4:
7939 case EOpConstructInt8:
7940 basicOp = EOpConstructInt8;
7941 // 8/16-bit storage extensions don't support constructing composites of 8/16-bit types,
7942 // so construct a 32-bit type and convert
7943 if (!intermediate.getArithemeticInt8Enabled()) {
7944 TType tempType(EbtInt, EvqTemporary, type.getVectorSize());
7946 if (tempType != newNode->getType()) {
7947 TOperator aggregateOp;
7948 if (op == EOpConstructInt8)
7949 aggregateOp = EOpConstructInt;
7951 aggregateOp = (TOperator)(EOpConstructIVec2 + op - EOpConstructI8Vec2);
7952 newNode = intermediate.setAggregateOperator(newNode, aggregateOp, tempType, node->getLoc());
7954 newNode = intermediate.addConversion(EbtInt8, newNode);
7959 case EOpConstructU8Vec2:
7960 case EOpConstructU8Vec3:
7961 case EOpConstructU8Vec4:
7962 case EOpConstructUint8:
7963 basicOp = EOpConstructUint8;
7964 // 8/16-bit storage extensions don't support constructing composites of 8/16-bit types,
7965 // so construct a 32-bit type and convert
7966 if (!intermediate.getArithemeticInt8Enabled()) {
7967 TType tempType(EbtUint, EvqTemporary, type.getVectorSize());
7969 if (tempType != newNode->getType()) {
7970 TOperator aggregateOp;
7971 if (op == EOpConstructUint8)
7972 aggregateOp = EOpConstructUint;
7974 aggregateOp = (TOperator)(EOpConstructUVec2 + op - EOpConstructU8Vec2);
7975 newNode = intermediate.setAggregateOperator(newNode, aggregateOp, tempType, node->getLoc());
7977 newNode = intermediate.addConversion(EbtUint8, newNode);
7982 case EOpConstructI16Vec2:
7983 case EOpConstructI16Vec3:
7984 case EOpConstructI16Vec4:
7985 case EOpConstructInt16:
7986 basicOp = EOpConstructInt16;
7987 // 8/16-bit storage extensions don't support constructing composites of 8/16-bit types,
7988 // so construct a 32-bit type and convert
7989 if (!intermediate.getArithemeticInt16Enabled()) {
7990 TType tempType(EbtInt, EvqTemporary, type.getVectorSize());
7992 if (tempType != newNode->getType()) {
7993 TOperator aggregateOp;
7994 if (op == EOpConstructInt16)
7995 aggregateOp = EOpConstructInt;
7997 aggregateOp = (TOperator)(EOpConstructIVec2 + op - EOpConstructI16Vec2);
7998 newNode = intermediate.setAggregateOperator(newNode, aggregateOp, tempType, node->getLoc());
8000 newNode = intermediate.addConversion(EbtInt16, newNode);
8005 case EOpConstructU16Vec2:
8006 case EOpConstructU16Vec3:
8007 case EOpConstructU16Vec4:
8008 case EOpConstructUint16:
8009 basicOp = EOpConstructUint16;
8010 // 8/16-bit storage extensions don't support constructing composites of 8/16-bit types,
8011 // so construct a 32-bit type and convert
8012 if (!intermediate.getArithemeticInt16Enabled()) {
8013 TType tempType(EbtUint, EvqTemporary, type.getVectorSize());
8015 if (tempType != newNode->getType()) {
8016 TOperator aggregateOp;
8017 if (op == EOpConstructUint16)
8018 aggregateOp = EOpConstructUint;
8020 aggregateOp = (TOperator)(EOpConstructUVec2 + op - EOpConstructU16Vec2);
8021 newNode = intermediate.setAggregateOperator(newNode, aggregateOp, tempType, node->getLoc());
8023 newNode = intermediate.addConversion(EbtUint16, newNode);
8028 case EOpConstructI64Vec2:
8029 case EOpConstructI64Vec3:
8030 case EOpConstructI64Vec4:
8031 case EOpConstructInt64:
8032 basicOp = EOpConstructInt64;
8035 case EOpConstructUint64:
8036 if (type.isScalar() && node->getType().isReference()) {
8037 TIntermTyped* newNode = intermediate.addBuiltInFunctionCall(node->getLoc(), EOpConvPtrToUint64, true, node, type);
8041 case EOpConstructU64Vec2:
8042 case EOpConstructU64Vec3:
8043 case EOpConstructU64Vec4:
8044 basicOp = EOpConstructUint64;
8047 case EOpConstructNonuniform:
8048 // Make a nonuniform copy of node
8049 newNode = intermediate.addBuiltInFunctionCall(node->getLoc(), EOpCopyObject, true, node, type);
8052 case EOpConstructReference:
8053 // construct reference from reference
8054 if (node->getType().isReference()) {
8055 newNode = intermediate.addBuiltInFunctionCall(node->getLoc(), EOpConstructReference, true, node, type);
8057 // construct reference from uint64
8058 } else if (node->getType().isScalar() && node->getType().getBasicType() == EbtUint64) {
8059 TIntermTyped* newNode = intermediate.addBuiltInFunctionCall(node->getLoc(), EOpConvUint64ToPtr, true, node,
8062 // construct reference from uvec2
8063 } else if (node->getType().isVector() && node->getType().getBasicType() == EbtUint &&
8064 node->getVectorSize() == 2) {
8065 requireExtensions(loc, 1, &E_GL_EXT_buffer_reference_uvec2, "uvec2 conversion to reference");
8066 TIntermTyped* newNode = intermediate.addBuiltInFunctionCall(node->getLoc(), EOpConvUvec2ToPtr, true, node,
8073 case EOpConstructCooperativeMatrix:
8074 if (!node->getType().isCoopMat()) {
8075 if (type.getBasicType() != node->getType().getBasicType()) {
8076 node = intermediate.addConversion(type.getBasicType(), node);
8077 if (node == nullptr)
8080 node = intermediate.setAggregateOperator(node, EOpConstructCooperativeMatrix, type, node->getLoc());
8082 TOperator op = EOpNull;
8083 switch (type.getBasicType()) {
8088 switch (node->getType().getBasicType()) {
8089 case EbtFloat: op = EOpConvFloatToInt; break;
8090 case EbtFloat16: op = EOpConvFloat16ToInt; break;
8091 case EbtUint8: op = EOpConvUint8ToInt; break;
8092 case EbtInt8: op = EOpConvInt8ToInt; break;
8093 case EbtUint: op = EOpConvUintToInt; break;
8098 switch (node->getType().getBasicType()) {
8099 case EbtFloat: op = EOpConvFloatToUint; break;
8100 case EbtFloat16: op = EOpConvFloat16ToUint; break;
8101 case EbtUint8: op = EOpConvUint8ToUint; break;
8102 case EbtInt8: op = EOpConvInt8ToUint; break;
8103 case EbtInt: op = EOpConvIntToUint; break;
8104 case EbtUint: op = EOpConvUintToInt8; break;
8109 switch (node->getType().getBasicType()) {
8110 case EbtFloat: op = EOpConvFloatToInt8; break;
8111 case EbtFloat16: op = EOpConvFloat16ToInt8; break;
8112 case EbtUint8: op = EOpConvUint8ToInt8; break;
8113 case EbtInt: op = EOpConvIntToInt8; break;
8114 case EbtUint: op = EOpConvUintToInt8; break;
8119 switch (node->getType().getBasicType()) {
8120 case EbtFloat: op = EOpConvFloatToUint8; break;
8121 case EbtFloat16: op = EOpConvFloat16ToUint8; break;
8122 case EbtInt8: op = EOpConvInt8ToUint8; break;
8123 case EbtInt: op = EOpConvIntToUint8; break;
8124 case EbtUint: op = EOpConvUintToUint8; break;
8129 switch (node->getType().getBasicType()) {
8130 case EbtFloat16: op = EOpConvFloat16ToFloat; break;
8131 case EbtInt8: op = EOpConvInt8ToFloat; break;
8132 case EbtUint8: op = EOpConvUint8ToFloat; break;
8133 case EbtInt: op = EOpConvIntToFloat; break;
8134 case EbtUint: op = EOpConvUintToFloat; break;
8139 switch (node->getType().getBasicType()) {
8140 case EbtFloat: op = EOpConvFloatToFloat16; break;
8141 case EbtInt8: op = EOpConvInt8ToFloat16; break;
8142 case EbtUint8: op = EOpConvUint8ToFloat16; break;
8143 case EbtInt: op = EOpConvIntToFloat16; break;
8144 case EbtUint: op = EOpConvUintToFloat16; break;
8150 node = intermediate.addUnaryNode(op, node, node->getLoc(), type);
8151 // If it's a (non-specialization) constant, it must be folded.
8152 if (node->getAsUnaryNode()->getOperand()->getAsConstantUnion())
8153 return node->getAsUnaryNode()->getOperand()->getAsConstantUnion()->fold(op, node->getType());
8158 case EOpConstructAccStruct:
8159 if ((node->getType().isScalar() && node->getType().getBasicType() == EbtUint64)) {
8160 // construct acceleration structure from uint64
8161 requireExtensions(loc, Num_ray_tracing_EXTs, ray_tracing_EXTs, "uint64_t conversion to acclerationStructureEXT");
8162 return intermediate.addBuiltInFunctionCall(node->getLoc(), EOpConvUint64ToAccStruct, true, node,
8164 } else if (node->getType().isVector() && node->getType().getBasicType() == EbtUint && node->getVectorSize() == 2) {
8165 // construct acceleration structure from uint64
8166 requireExtensions(loc, Num_ray_tracing_EXTs, ray_tracing_EXTs, "uvec2 conversion to accelerationStructureEXT");
8167 return intermediate.addBuiltInFunctionCall(node->getLoc(), EOpConvUvec2ToAccStruct, true, node,
8171 #endif // GLSLANG_WEB
8174 error(loc, "unsupported construction", "", "");
8178 newNode = intermediate.addUnaryMath(basicOp, node, node->getLoc());
8179 if (newNode == nullptr) {
8180 error(loc, "can't convert", "constructor", "");
8185 // Now, if there still isn't an operation to do the construction, and we need one, add one.
8188 // Otherwise, skip out early.
8189 if (subset || (newNode != node && newNode->getType() == type))
8192 // setAggregateOperator will insert a new node for the constructor, as needed.
8193 return intermediate.setAggregateOperator(newNode, op, type, loc);
8196 // This function tests for the type of the parameters to the structure or array constructor. Raises
8197 // an error message if the expected type does not match the parameter passed to the constructor.
8199 // Returns nullptr for an error or the input node itself if the expected and the given parameter types match.
8201 TIntermTyped* TParseContext::constructAggregate(TIntermNode* node, const TType& type, int paramCount, const TSourceLoc& loc)
8203 TIntermTyped* converted = intermediate.addConversion(EOpConstructStruct, type, node->getAsTyped());
8204 if (! converted || converted->getType() != type) {
8205 bool enhanced = intermediate.getEnhancedMsgs();
8206 error(loc, "", "constructor", "cannot convert parameter %d from '%s' to '%s'", paramCount,
8207 node->getAsTyped()->getType().getCompleteString(enhanced).c_str(), type.getCompleteString(enhanced).c_str());
8215 // If a memory qualifier is present in 'to', also make it present in 'from'.
8216 void TParseContext::inheritMemoryQualifiers(const TQualifier& from, TQualifier& to)
8219 if (from.isReadOnly())
8220 to.readonly = from.readonly;
8221 if (from.isWriteOnly())
8222 to.writeonly = from.writeonly;
8224 to.coherent = from.coherent;
8226 to.volatil = from.volatil;
8228 to.restrict = from.restrict;
8233 // Do everything needed to add an interface block.
8235 void TParseContext::declareBlock(const TSourceLoc& loc, TTypeList& typeList, const TString* instanceName,
8236 TArraySizes* arraySizes)
8238 if (spvVersion.vulkan > 0 && spvVersion.vulkanRelaxed)
8239 blockStorageRemap(loc, blockName, currentBlockQualifier);
8240 blockStageIoCheck(loc, currentBlockQualifier);
8241 blockQualifierCheck(loc, currentBlockQualifier, instanceName != nullptr);
8242 if (arraySizes != nullptr) {
8243 arraySizesCheck(loc, currentBlockQualifier, arraySizes, nullptr, false);
8244 arrayOfArrayVersionCheck(loc, arraySizes);
8245 if (arraySizes->getNumDims() > 1)
8246 requireProfile(loc, ~EEsProfile, "array-of-array of block");
8249 // Inherit and check member storage qualifiers WRT to the block-level qualifier.
8250 for (unsigned int member = 0; member < typeList.size(); ++member) {
8251 TType& memberType = *typeList[member].type;
8252 TQualifier& memberQualifier = memberType.getQualifier();
8253 const TSourceLoc& memberLoc = typeList[member].loc;
8254 if (memberQualifier.storage != EvqTemporary && memberQualifier.storage != EvqGlobal && memberQualifier.storage != currentBlockQualifier.storage)
8255 error(memberLoc, "member storage qualifier cannot contradict block storage qualifier", memberType.getFieldName().c_str(), "");
8256 memberQualifier.storage = currentBlockQualifier.storage;
8257 globalQualifierFixCheck(memberLoc, memberQualifier);
8259 inheritMemoryQualifiers(currentBlockQualifier, memberQualifier);
8260 if (currentBlockQualifier.perPrimitiveNV)
8261 memberQualifier.perPrimitiveNV = currentBlockQualifier.perPrimitiveNV;
8262 if (currentBlockQualifier.perViewNV)
8263 memberQualifier.perViewNV = currentBlockQualifier.perViewNV;
8264 if (currentBlockQualifier.perTaskNV)
8265 memberQualifier.perTaskNV = currentBlockQualifier.perTaskNV;
8266 if (currentBlockQualifier.storage == EvqtaskPayloadSharedEXT)
8267 memberQualifier.storage = EvqtaskPayloadSharedEXT;
8268 if (memberQualifier.storage == EvqSpirvStorageClass)
8269 error(memberLoc, "member cannot have a spirv_storage_class qualifier", memberType.getFieldName().c_str(), "");
8270 if (memberQualifier.hasSprivDecorate() && !memberQualifier.getSpirvDecorate().decorateIds.empty())
8271 error(memberLoc, "member cannot have a spirv_decorate_id qualifier", memberType.getFieldName().c_str(), "");
8273 if ((currentBlockQualifier.storage == EvqUniform || currentBlockQualifier.storage == EvqBuffer) && (memberQualifier.isInterpolation() || memberQualifier.isAuxiliary()))
8274 error(memberLoc, "member of uniform or buffer block cannot have an auxiliary or interpolation qualifier", memberType.getFieldName().c_str(), "");
8275 if (memberType.isArray())
8276 arraySizesCheck(memberLoc, currentBlockQualifier, memberType.getArraySizes(), nullptr, member == typeList.size() - 1);
8277 if (memberQualifier.hasOffset()) {
8278 if (spvVersion.spv == 0) {
8279 profileRequires(memberLoc, ~EEsProfile, 440, E_GL_ARB_enhanced_layouts, "\"offset\" on block member");
8280 profileRequires(memberLoc, EEsProfile, 300, E_GL_ARB_enhanced_layouts, "\"offset\" on block member");
8284 if (memberType.containsOpaque())
8285 error(memberLoc, "member of block cannot be or contain a sampler, image, or atomic_uint type", typeList[member].type->getFieldName().c_str(), "");
8287 if (memberType.containsCoopMat())
8288 error(memberLoc, "member of block cannot be or contain a cooperative matrix type", typeList[member].type->getFieldName().c_str(), "");
8291 // This might be a redeclaration of a built-in block. If so, redeclareBuiltinBlock() will
8293 if (! symbolTable.atBuiltInLevel() && builtInName(*blockName)) {
8294 redeclareBuiltinBlock(loc, typeList, *blockName, instanceName, arraySizes);
8298 // Not a redeclaration of a built-in; check that all names are user names.
8299 reservedErrorCheck(loc, *blockName);
8301 reservedErrorCheck(loc, *instanceName);
8302 for (unsigned int member = 0; member < typeList.size(); ++member)
8303 reservedErrorCheck(typeList[member].loc, typeList[member].type->getFieldName());
8305 // Make default block qualification, and adjust the member qualifications
8307 TQualifier defaultQualification;
8308 switch (currentBlockQualifier.storage) {
8309 case EvqUniform: defaultQualification = globalUniformDefaults; break;
8310 case EvqBuffer: defaultQualification = globalBufferDefaults; break;
8311 case EvqVaryingIn: defaultQualification = globalInputDefaults; break;
8312 case EvqVaryingOut: defaultQualification = globalOutputDefaults; break;
8313 case EvqShared: defaultQualification = globalSharedDefaults; break;
8314 default: defaultQualification.clear(); break;
8317 // Special case for "push_constant uniform", which has a default of std430,
8318 // contrary to normal uniform defaults, and can't have a default tracked for it.
8319 if ((currentBlockQualifier.isPushConstant() && !currentBlockQualifier.hasPacking()) ||
8320 (currentBlockQualifier.isShaderRecord() && !currentBlockQualifier.hasPacking()))
8321 currentBlockQualifier.layoutPacking = ElpStd430;
8323 // Special case for "taskNV in/out", which has a default of std430,
8324 if (currentBlockQualifier.isTaskMemory() && !currentBlockQualifier.hasPacking())
8325 currentBlockQualifier.layoutPacking = ElpStd430;
8327 // fix and check for member layout qualifiers
8329 mergeObjectLayoutQualifiers(defaultQualification, currentBlockQualifier, true);
8331 // "The align qualifier can only be used on blocks or block members, and only for blocks declared with std140 or std430 layouts."
8332 if (currentBlockQualifier.hasAlign()) {
8333 if (defaultQualification.layoutPacking != ElpStd140 &&
8334 defaultQualification.layoutPacking != ElpStd430 &&
8335 defaultQualification.layoutPacking != ElpScalar) {
8336 error(loc, "can only be used with std140, std430, or scalar layout packing", "align", "");
8337 defaultQualification.layoutAlign = -1;
8341 bool memberWithLocation = false;
8342 bool memberWithoutLocation = false;
8343 bool memberWithPerViewQualifier = false;
8344 for (unsigned int member = 0; member < typeList.size(); ++member) {
8345 TQualifier& memberQualifier = typeList[member].type->getQualifier();
8346 const TSourceLoc& memberLoc = typeList[member].loc;
8348 if (memberQualifier.hasStream()) {
8349 if (defaultQualification.layoutStream != memberQualifier.layoutStream)
8350 error(memberLoc, "member cannot contradict block", "stream", "");
8353 // "This includes a block's inheritance of the
8354 // current global default buffer, a block member's inheritance of the block's
8355 // buffer, and the requirement that any *xfb_buffer* declared on a block
8356 // member must match the buffer inherited from the block."
8357 if (memberQualifier.hasXfbBuffer()) {
8358 if (defaultQualification.layoutXfbBuffer != memberQualifier.layoutXfbBuffer)
8359 error(memberLoc, "member cannot contradict block (or what block inherited from global)", "xfb_buffer", "");
8363 if (memberQualifier.hasPacking())
8364 error(memberLoc, "member of block cannot have a packing layout qualifier", typeList[member].type->getFieldName().c_str(), "");
8365 if (memberQualifier.hasLocation()) {
8366 const char* feature = "location on block member";
8367 switch (currentBlockQualifier.storage) {
8371 requireProfile(memberLoc, ECoreProfile | ECompatibilityProfile | EEsProfile, feature);
8372 profileRequires(memberLoc, ECoreProfile | ECompatibilityProfile, 440, E_GL_ARB_enhanced_layouts, feature);
8373 profileRequires(memberLoc, EEsProfile, 320, Num_AEP_shader_io_blocks, AEP_shader_io_blocks, feature);
8374 memberWithLocation = true;
8378 error(memberLoc, "can only use in an in/out block", feature, "");
8382 memberWithoutLocation = true;
8384 // "The offset qualifier can only be used on block members of blocks declared with std140 or std430 layouts."
8385 // "The align qualifier can only be used on blocks or block members, and only for blocks declared with std140 or std430 layouts."
8386 if (memberQualifier.hasAlign() || memberQualifier.hasOffset()) {
8387 if (defaultQualification.layoutPacking != ElpStd140 &&
8388 defaultQualification.layoutPacking != ElpStd430 &&
8389 defaultQualification.layoutPacking != ElpScalar)
8390 error(memberLoc, "can only be used with std140, std430, or scalar layout packing", "offset/align", "");
8393 if (memberQualifier.isPerView()) {
8394 memberWithPerViewQualifier = true;
8397 TQualifier newMemberQualification = defaultQualification;
8398 mergeQualifiers(memberLoc, newMemberQualification, memberQualifier, false);
8399 memberQualifier = newMemberQualification;
8402 layoutMemberLocationArrayCheck(loc, memberWithLocation, arraySizes);
8405 // Ensure that the block has an XfbBuffer assigned. This is needed
8406 // because if the block has a XfbOffset assigned, then it is
8407 // assumed that it has implicitly assigned the current global
8408 // XfbBuffer, and because it's members need to be assigned a
8409 // XfbOffset if they lack it.
8410 if (currentBlockQualifier.storage == EvqVaryingOut && globalOutputDefaults.hasXfbBuffer()) {
8411 if (!currentBlockQualifier.hasXfbBuffer() && currentBlockQualifier.hasXfbOffset())
8412 currentBlockQualifier.layoutXfbBuffer = globalOutputDefaults.layoutXfbBuffer;
8416 // Process the members
8417 fixBlockLocations(loc, currentBlockQualifier, typeList, memberWithLocation, memberWithoutLocation);
8418 fixXfbOffsets(currentBlockQualifier, typeList);
8419 fixBlockUniformOffsets(currentBlockQualifier, typeList);
8420 fixBlockUniformLayoutMatrix(currentBlockQualifier, &typeList, nullptr);
8421 fixBlockUniformLayoutPacking(currentBlockQualifier, &typeList, nullptr);
8422 for (unsigned int member = 0; member < typeList.size(); ++member)
8423 layoutTypeCheck(typeList[member].loc, *typeList[member].type);
8426 if (memberWithPerViewQualifier) {
8427 for (unsigned int member = 0; member < typeList.size(); ++member) {
8428 checkAndResizeMeshViewDim(typeList[member].loc, *typeList[member].type, /*isBlockMember*/ true);
8433 // reverse merge, so that currentBlockQualifier now has all layout information
8434 // (can't use defaultQualification directly, it's missing other non-layout-default-class qualifiers)
8435 mergeObjectLayoutQualifiers(currentBlockQualifier, defaultQualification, true);
8438 // Build and add the interface block as a new type named 'blockName'
8441 TType blockType(&typeList, *blockName, currentBlockQualifier);
8442 if (arraySizes != nullptr)
8443 blockType.transferArraySizes(arraySizes);
8446 if (arraySizes == nullptr)
8447 ioArrayCheck(loc, blockType, instanceName ? *instanceName : *blockName);
8448 if (currentBlockQualifier.hasBufferReference()) {
8450 if (currentBlockQualifier.storage != EvqBuffer)
8451 error(loc, "can only be used with buffer", "buffer_reference", "");
8453 // Create the block reference type. If it was forward-declared, detect that
8454 // as a referent struct type with no members. Replace the referent type with
8456 TType blockNameType(EbtReference, blockType, *blockName);
8457 TVariable* blockNameVar = new TVariable(blockName, blockNameType, true);
8458 if (! symbolTable.insert(*blockNameVar)) {
8459 TSymbol* existingName = symbolTable.find(*blockName);
8460 if (existingName->getType().isReference() &&
8461 existingName->getType().getReferentType()->getStruct() &&
8462 existingName->getType().getReferentType()->getStruct()->size() == 0 &&
8463 existingName->getType().getQualifier().storage == blockType.getQualifier().storage) {
8464 existingName->getType().getReferentType()->deepCopy(blockType);
8466 error(loc, "block name cannot be redefined", blockName->c_str(), "");
8469 if (!instanceName) {
8476 // Don't make a user-defined type out of block name; that will cause an error
8477 // if the same block name gets reused in a different interface.
8479 // "Block names have no other use within a shader
8480 // beyond interface matching; it is a compile-time error to use a block name at global scope for anything
8481 // other than as a block name (e.g., use of a block name for a global variable name or function name is
8482 // currently reserved)."
8484 // Use the symbol table to prevent normal reuse of the block's name, as a variable entry,
8485 // whose type is EbtBlock, but without all the structure; that will come from the type
8486 // the instances point to.
8488 TType blockNameType(EbtBlock, blockType.getQualifier().storage);
8489 TVariable* blockNameVar = new TVariable(blockName, blockNameType);
8490 if (! symbolTable.insert(*blockNameVar)) {
8491 TSymbol* existingName = symbolTable.find(*blockName);
8492 if (existingName->getType().getBasicType() == EbtBlock) {
8493 if (existingName->getType().getQualifier().storage == blockType.getQualifier().storage) {
8494 error(loc, "Cannot reuse block name within the same interface:", blockName->c_str(), blockType.getStorageQualifierString());
8498 error(loc, "block name cannot redefine a non-block name", blockName->c_str(), "");
8504 // Add the variable, as anonymous or named instanceName.
8505 // Make an anonymous variable if no name was provided.
8507 instanceName = NewPoolTString("");
8509 TVariable& variable = *new TVariable(instanceName, blockType);
8510 if (! symbolTable.insert(variable)) {
8511 if (*instanceName == "")
8512 error(loc, "nameless block contains a member that already has a name at global scope", blockName->c_str(), "");
8514 error(loc, "block instance name redefinition", variable.getName().c_str(), "");
8519 // Check for general layout qualifier errors
8520 layoutObjectCheck(loc, variable);
8524 if (isIoResizeArray(blockType)) {
8525 ioArraySymbolResizeList.push_back(&variable);
8526 checkIoArraysConsistency(loc, true);
8528 fixIoArraySize(loc, variable.getWritableType());
8531 // Save it in the AST for linker use.
8532 trackLinkage(variable);
8536 // allow storage type of block to be remapped at compile time
8538 void TParseContext::blockStorageRemap(const TSourceLoc&, const TString* instanceName, TQualifier& qualifier)
8540 TBlockStorageClass type = intermediate.getBlockStorageOverride(instanceName->c_str());
8541 if (type != EbsNone) {
8542 qualifier.setBlockStorage(type);
8546 // Do all block-declaration checking regarding the combination of in/out/uniform/buffer
8547 // with a particular stage.
8548 void TParseContext::blockStageIoCheck(const TSourceLoc& loc, const TQualifier& qualifier)
8550 const char *extsrt[2] = { E_GL_NV_ray_tracing, E_GL_EXT_ray_tracing };
8551 switch (qualifier.storage) {
8553 profileRequires(loc, EEsProfile, 300, nullptr, "uniform block");
8554 profileRequires(loc, ENoProfile, 140, E_GL_ARB_uniform_buffer_object, "uniform block");
8555 if (currentBlockQualifier.layoutPacking == ElpStd430 && ! currentBlockQualifier.isPushConstant())
8556 requireExtensions(loc, 1, &E_GL_EXT_scalar_block_layout, "std430 requires the buffer storage qualifier");
8559 requireProfile(loc, EEsProfile | ECoreProfile | ECompatibilityProfile, "buffer block");
8560 profileRequires(loc, ECoreProfile | ECompatibilityProfile, 430, E_GL_ARB_shader_storage_buffer_object, "buffer block");
8561 profileRequires(loc, EEsProfile, 310, nullptr, "buffer block");
8564 profileRequires(loc, ~EEsProfile, 150, E_GL_ARB_separate_shader_objects, "input block");
8565 // It is a compile-time error to have an input block in a vertex shader or an output block in a fragment shader
8566 // "Compute shaders do not permit user-defined input variables..."
8567 requireStage(loc, (EShLanguageMask)(EShLangTessControlMask|EShLangTessEvaluationMask|EShLangGeometryMask|
8568 EShLangFragmentMask|EShLangMeshMask), "input block");
8569 if (language == EShLangFragment) {
8570 profileRequires(loc, EEsProfile, 320, Num_AEP_shader_io_blocks, AEP_shader_io_blocks, "fragment input block");
8571 } else if (language == EShLangMesh && ! qualifier.isTaskMemory()) {
8572 error(loc, "input blocks cannot be used in a mesh shader", "out", "");
8576 profileRequires(loc, ~EEsProfile, 150, E_GL_ARB_separate_shader_objects, "output block");
8577 requireStage(loc, (EShLanguageMask)(EShLangVertexMask|EShLangTessControlMask|EShLangTessEvaluationMask|
8578 EShLangGeometryMask|EShLangMeshMask|EShLangTaskMask), "output block");
8579 // ES 310 can have a block before shader_io is turned on, so skip this test for built-ins
8580 if (language == EShLangVertex && ! parsingBuiltins) {
8581 profileRequires(loc, EEsProfile, 320, Num_AEP_shader_io_blocks, AEP_shader_io_blocks, "vertex output block");
8582 } else if (language == EShLangMesh && qualifier.isTaskMemory()) {
8583 error(loc, "can only use on input blocks in mesh shader", "taskNV", "");
8584 } else if (language == EShLangTask && ! qualifier.isTaskMemory()) {
8585 error(loc, "output blocks cannot be used in a task shader", "out", "");
8589 if (spvVersion.spv > 0 && spvVersion.spv < EShTargetSpv_1_4) {
8590 error(loc, "shared block requires at least SPIR-V 1.4", "shared block", "");
8592 profileRequires(loc, EEsProfile | ECoreProfile | ECompatibilityProfile, 0, E_GL_EXT_shared_memory_block, "shared block");
8596 profileRequires(loc, ~EEsProfile, 460, 2, extsrt, "rayPayloadNV block");
8597 requireStage(loc, (EShLanguageMask)(EShLangRayGenMask | EShLangAnyHitMask | EShLangClosestHitMask | EShLangMissMask),
8598 "rayPayloadNV block");
8601 profileRequires(loc, ~EEsProfile, 460, 2, extsrt, "rayPayloadInNV block");
8602 requireStage(loc, (EShLanguageMask)(EShLangAnyHitMask | EShLangClosestHitMask | EShLangMissMask),
8603 "rayPayloadInNV block");
8606 profileRequires(loc, ~EEsProfile, 460, 2, extsrt, "hitAttributeNV block");
8607 requireStage(loc, (EShLanguageMask)(EShLangIntersectMask | EShLangAnyHitMask | EShLangClosestHitMask), "hitAttributeNV block");
8609 case EvqCallableData:
8610 profileRequires(loc, ~EEsProfile, 460, 2, extsrt, "callableDataNV block");
8611 requireStage(loc, (EShLanguageMask)(EShLangRayGenMask | EShLangClosestHitMask | EShLangMissMask | EShLangCallableMask),
8612 "callableDataNV block");
8614 case EvqCallableDataIn:
8615 profileRequires(loc, ~EEsProfile, 460, 2, extsrt, "callableDataInNV block");
8616 requireStage(loc, (EShLanguageMask)(EShLangCallableMask), "callableDataInNV block");
8620 error(loc, "only uniform, buffer, in, or out blocks are supported", blockName->c_str(), "");
8625 // Do all block-declaration checking regarding its qualifiers.
8626 void TParseContext::blockQualifierCheck(const TSourceLoc& loc, const TQualifier& qualifier, bool /*instanceName*/)
8628 // The 4.5 specification says:
8630 // interface-block :
8631 // layout-qualifieropt interface-qualifier block-name { member-list } instance-nameopt ;
8633 // interface-qualifier :
8641 // Note however memory qualifiers aren't included, yet the specification also says
8643 // "...memory qualifiers may also be used in the declaration of shader storage blocks..."
8645 if (qualifier.isInterpolation())
8646 error(loc, "cannot use interpolation qualifiers on an interface block", "flat/smooth/noperspective", "");
8647 if (qualifier.centroid)
8648 error(loc, "cannot use centroid qualifier on an interface block", "centroid", "");
8649 if (qualifier.isSample())
8650 error(loc, "cannot use sample qualifier on an interface block", "sample", "");
8651 if (qualifier.invariant)
8652 error(loc, "cannot use invariant qualifier on an interface block", "invariant", "");
8653 if (qualifier.isPushConstant())
8654 intermediate.addPushConstantCount();
8655 if (qualifier.isShaderRecord())
8656 intermediate.addShaderRecordCount();
8657 if (qualifier.isTaskMemory())
8658 intermediate.addTaskNVCount();
8662 // "For a block, this process applies to the entire block, or until the first member
8663 // is reached that has a location layout qualifier. When a block member is declared with a location
8664 // qualifier, its location comes from that qualifier: The member's location qualifier overrides the block-level
8665 // declaration. Subsequent members are again assigned consecutive locations, based on the newest location,
8666 // until the next member declared with a location qualifier. The values used for locations do not have to be
8667 // declared in increasing order."
8668 void TParseContext::fixBlockLocations(const TSourceLoc& loc, TQualifier& qualifier, TTypeList& typeList, bool memberWithLocation, bool memberWithoutLocation)
8670 // "If a block has no block-level location layout qualifier, it is required that either all or none of its members
8671 // have a location layout qualifier, or a compile-time error results."
8672 if (! qualifier.hasLocation() && memberWithLocation && memberWithoutLocation)
8673 error(loc, "either the block needs a location, or all members need a location, or no members have a location", "location", "");
8675 if (memberWithLocation) {
8676 // remove any block-level location and make it per *every* member
8677 int nextLocation = 0; // by the rule above, initial value is not relevant
8678 if (qualifier.hasAnyLocation()) {
8679 nextLocation = qualifier.layoutLocation;
8680 qualifier.layoutLocation = TQualifier::layoutLocationEnd;
8681 if (qualifier.hasComponent()) {
8682 // "It is a compile-time error to apply the *component* qualifier to a ... block"
8683 error(loc, "cannot apply to a block", "component", "");
8685 if (qualifier.hasIndex()) {
8686 error(loc, "cannot apply to a block", "index", "");
8689 for (unsigned int member = 0; member < typeList.size(); ++member) {
8690 TQualifier& memberQualifier = typeList[member].type->getQualifier();
8691 const TSourceLoc& memberLoc = typeList[member].loc;
8692 if (! memberQualifier.hasLocation()) {
8693 if (nextLocation >= (int)TQualifier::layoutLocationEnd)
8694 error(memberLoc, "location is too large", "location", "");
8695 memberQualifier.layoutLocation = nextLocation;
8696 memberQualifier.layoutComponent = TQualifier::layoutComponentEnd;
8698 nextLocation = memberQualifier.layoutLocation + intermediate.computeTypeLocationSize(
8699 *typeList[member].type, language);
8705 void TParseContext::fixXfbOffsets(TQualifier& qualifier, TTypeList& typeList)
8708 // "If a block is qualified with xfb_offset, all its
8709 // members are assigned transform feedback buffer offsets. If a block is not qualified with xfb_offset, any
8710 // members of that block not qualified with an xfb_offset will not be assigned transform feedback buffer
8713 if (! qualifier.hasXfbBuffer() || ! qualifier.hasXfbOffset())
8716 int nextOffset = qualifier.layoutXfbOffset;
8717 for (unsigned int member = 0; member < typeList.size(); ++member) {
8718 TQualifier& memberQualifier = typeList[member].type->getQualifier();
8719 bool contains64BitType = false;
8720 bool contains32BitType = false;
8721 bool contains16BitType = false;
8722 int memberSize = intermediate.computeTypeXfbSize(*typeList[member].type, contains64BitType, contains32BitType, contains16BitType);
8723 // see if we need to auto-assign an offset to this member
8724 if (! memberQualifier.hasXfbOffset()) {
8725 // "if applied to an aggregate containing a double or 64-bit integer, the offset must also be a multiple of 8"
8726 if (contains64BitType)
8727 RoundToPow2(nextOffset, 8);
8728 else if (contains32BitType)
8729 RoundToPow2(nextOffset, 4);
8730 else if (contains16BitType)
8731 RoundToPow2(nextOffset, 2);
8732 memberQualifier.layoutXfbOffset = nextOffset;
8734 nextOffset = memberQualifier.layoutXfbOffset;
8735 nextOffset += memberSize;
8738 // The above gave all block members an offset, so we can take it off the block now,
8739 // which will avoid double counting the offset usage.
8740 qualifier.layoutXfbOffset = TQualifier::layoutXfbOffsetEnd;
8744 // Calculate and save the offset of each block member, using the recursively
8745 // defined block offset rules and the user-provided offset and align.
8747 // Also, compute and save the total size of the block. For the block's size, arrayness
8748 // is not taken into account, as each element is backed by a separate buffer.
8750 void TParseContext::fixBlockUniformOffsets(TQualifier& qualifier, TTypeList& typeList)
8752 if (!storageCanHaveLayoutInBlock(qualifier.storage) && !qualifier.isTaskMemory())
8754 if (qualifier.layoutPacking != ElpStd140 && qualifier.layoutPacking != ElpStd430 && qualifier.layoutPacking != ElpScalar)
8759 for (unsigned int member = 0; member < typeList.size(); ++member) {
8760 TQualifier& memberQualifier = typeList[member].type->getQualifier();
8761 const TSourceLoc& memberLoc = typeList[member].loc;
8763 // "When align is applied to an array, it effects only the start of the array, not the array's internal stride."
8765 // modify just the children's view of matrix layout, if there is one for this member
8766 TLayoutMatrix subMatrixLayout = typeList[member].type->getQualifier().layoutMatrix;
8768 int memberAlignment = intermediate.getMemberAlignment(*typeList[member].type, memberSize, dummyStride, qualifier.layoutPacking,
8769 subMatrixLayout != ElmNone ? subMatrixLayout == ElmRowMajor : qualifier.layoutMatrix == ElmRowMajor);
8770 if (memberQualifier.hasOffset()) {
8771 // "The specified offset must be a multiple
8772 // of the base alignment of the type of the block member it qualifies, or a compile-time error results."
8773 if (! IsMultipleOfPow2(memberQualifier.layoutOffset, memberAlignment))
8774 error(memberLoc, "must be a multiple of the member's alignment", "offset", "");
8776 // GLSL: "It is a compile-time error to specify an offset that is smaller than the offset of the previous
8777 // member in the block or that lies within the previous member of the block"
8778 if (spvVersion.spv == 0) {
8779 if (memberQualifier.layoutOffset < offset)
8780 error(memberLoc, "cannot lie in previous members", "offset", "");
8782 // "The offset qualifier forces the qualified member to start at or after the specified
8783 // integral-constant expression, which will be its byte offset from the beginning of the buffer.
8784 // "The actual offset of a member is computed as
8785 // follows: If offset was declared, start with that offset, otherwise start with the next available offset."
8786 offset = std::max(offset, memberQualifier.layoutOffset);
8788 // TODO: Vulkan: "It is a compile-time error to have any offset, explicit or assigned,
8789 // that lies within another member of the block."
8791 offset = memberQualifier.layoutOffset;
8795 // "The actual alignment of a member will be the greater of the specified align alignment and the standard
8796 // (e.g., std140) base alignment for the member's type."
8797 if (memberQualifier.hasAlign())
8798 memberAlignment = std::max(memberAlignment, memberQualifier.layoutAlign);
8800 // "If the resulting offset is not a multiple of the actual alignment,
8801 // increase it to the first offset that is a multiple of
8802 // the actual alignment."
8803 RoundToPow2(offset, memberAlignment);
8804 typeList[member].type->getQualifier().layoutOffset = offset;
8805 offset += memberSize;
8810 // Spread LayoutMatrix to uniform block member, if a uniform block member is a struct,
8811 // we need spread LayoutMatrix to this struct member too. and keep this rule for recursive.
8813 void TParseContext::fixBlockUniformLayoutMatrix(TQualifier& qualifier, TTypeList* originTypeList,
8814 TTypeList* tmpTypeList)
8816 assert(tmpTypeList == nullptr || originTypeList->size() == tmpTypeList->size());
8817 for (unsigned int member = 0; member < originTypeList->size(); ++member) {
8818 if (qualifier.layoutPacking != ElpNone) {
8819 if (tmpTypeList == nullptr) {
8820 if (((*originTypeList)[member].type->isMatrix() ||
8821 (*originTypeList)[member].type->getBasicType() == EbtStruct) &&
8822 (*originTypeList)[member].type->getQualifier().layoutMatrix == ElmNone) {
8823 (*originTypeList)[member].type->getQualifier().layoutMatrix = qualifier.layoutMatrix;
8826 if (((*tmpTypeList)[member].type->isMatrix() ||
8827 (*tmpTypeList)[member].type->getBasicType() == EbtStruct) &&
8828 (*tmpTypeList)[member].type->getQualifier().layoutMatrix == ElmNone) {
8829 (*tmpTypeList)[member].type->getQualifier().layoutMatrix = qualifier.layoutMatrix;
8834 if ((*originTypeList)[member].type->getBasicType() == EbtStruct) {
8835 TQualifier* memberQualifier = nullptr;
8836 // block member can be declare a matrix style, so it should be update to the member's style
8837 if ((*originTypeList)[member].type->getQualifier().layoutMatrix == ElmNone) {
8838 memberQualifier = &qualifier;
8840 memberQualifier = &((*originTypeList)[member].type->getQualifier());
8843 const TType* tmpType = tmpTypeList == nullptr ?
8844 (*originTypeList)[member].type->clone() : (*tmpTypeList)[member].type;
8846 fixBlockUniformLayoutMatrix(*memberQualifier, (*originTypeList)[member].type->getWritableStruct(),
8847 tmpType->getWritableStruct());
8849 const TTypeList* structure = recordStructCopy(matrixFixRecord, (*originTypeList)[member].type, tmpType);
8851 if (tmpTypeList == nullptr) {
8852 (*originTypeList)[member].type->setStruct(const_cast<TTypeList*>(structure));
8854 if (tmpTypeList != nullptr) {
8855 (*tmpTypeList)[member].type->setStruct(const_cast<TTypeList*>(structure));
8862 // Spread LayoutPacking to matrix or aggregate block members. If a block member is a struct or
8863 // array of struct, spread LayoutPacking recursively to its matrix or aggregate members.
8865 void TParseContext::fixBlockUniformLayoutPacking(TQualifier& qualifier, TTypeList* originTypeList,
8866 TTypeList* tmpTypeList)
8868 assert(tmpTypeList == nullptr || originTypeList->size() == tmpTypeList->size());
8869 for (unsigned int member = 0; member < originTypeList->size(); ++member) {
8870 if (qualifier.layoutPacking != ElpNone) {
8871 if (tmpTypeList == nullptr) {
8872 if ((*originTypeList)[member].type->getQualifier().layoutPacking == ElpNone &&
8873 !(*originTypeList)[member].type->isScalarOrVector()) {
8874 (*originTypeList)[member].type->getQualifier().layoutPacking = qualifier.layoutPacking;
8877 if ((*tmpTypeList)[member].type->getQualifier().layoutPacking == ElpNone &&
8878 !(*tmpTypeList)[member].type->isScalarOrVector()) {
8879 (*tmpTypeList)[member].type->getQualifier().layoutPacking = qualifier.layoutPacking;
8884 if ((*originTypeList)[member].type->getBasicType() == EbtStruct) {
8885 // Deep copy the type in pool.
8886 // Because, struct use in different block may have different layout qualifier.
8887 // We have to new a object to distinguish between them.
8888 const TType* tmpType = tmpTypeList == nullptr ?
8889 (*originTypeList)[member].type->clone() : (*tmpTypeList)[member].type;
8891 fixBlockUniformLayoutPacking(qualifier, (*originTypeList)[member].type->getWritableStruct(),
8892 tmpType->getWritableStruct());
8894 const TTypeList* structure = recordStructCopy(packingFixRecord, (*originTypeList)[member].type, tmpType);
8896 if (tmpTypeList == nullptr) {
8897 (*originTypeList)[member].type->setStruct(const_cast<TTypeList*>(structure));
8899 if (tmpTypeList != nullptr) {
8900 (*tmpTypeList)[member].type->setStruct(const_cast<TTypeList*>(structure));
8906 // For an identifier that is already declared, add more qualification to it.
8907 void TParseContext::addQualifierToExisting(const TSourceLoc& loc, TQualifier qualifier, const TString& identifier)
8909 TSymbol* symbol = symbolTable.find(identifier);
8911 // A forward declaration of a block reference looks to the grammar like adding
8912 // a qualifier to an existing symbol. Detect this and create the block reference
8913 // type with an empty type list, which will be filled in later in
8914 // TParseContext::declareBlock.
8915 if (!symbol && qualifier.hasBufferReference()) {
8917 TType blockType(&typeList, identifier, qualifier);;
8918 TType blockNameType(EbtReference, blockType, identifier);
8919 TVariable* blockNameVar = new TVariable(&identifier, blockNameType, true);
8920 if (! symbolTable.insert(*blockNameVar)) {
8921 error(loc, "block name cannot redefine a non-block name", blockName->c_str(), "");
8927 error(loc, "identifier not previously declared", identifier.c_str(), "");
8930 if (symbol->getAsFunction()) {
8931 error(loc, "cannot re-qualify a function name", identifier.c_str(), "");
8935 if (qualifier.isAuxiliary() ||
8936 qualifier.isMemory() ||
8937 qualifier.isInterpolation() ||
8938 qualifier.hasLayout() ||
8939 qualifier.storage != EvqTemporary ||
8940 qualifier.precision != EpqNone) {
8941 error(loc, "cannot add storage, auxiliary, memory, interpolation, layout, or precision qualifier to an existing variable", identifier.c_str(), "");
8945 // For read-only built-ins, add a new symbol for holding the modified qualifier.
8946 // This will bring up an entire block, if a block type has to be modified (e.g., gl_Position inside a block)
8947 if (symbol->isReadOnly())
8948 symbol = symbolTable.copyUp(symbol);
8950 if (qualifier.invariant) {
8951 if (intermediate.inIoAccessed(identifier))
8952 error(loc, "cannot change qualification after use", "invariant", "");
8953 symbol->getWritableType().getQualifier().invariant = true;
8954 invariantCheck(loc, symbol->getType().getQualifier());
8955 } else if (qualifier.isNoContraction()) {
8956 if (intermediate.inIoAccessed(identifier))
8957 error(loc, "cannot change qualification after use", "precise", "");
8958 symbol->getWritableType().getQualifier().setNoContraction();
8959 } else if (qualifier.specConstant) {
8960 symbol->getWritableType().getQualifier().makeSpecConstant();
8961 if (qualifier.hasSpecConstantId())
8962 symbol->getWritableType().getQualifier().layoutSpecConstantId = qualifier.layoutSpecConstantId;
8964 warn(loc, "unknown requalification", "", "");
8967 void TParseContext::addQualifierToExisting(const TSourceLoc& loc, TQualifier qualifier, TIdentifierList& identifiers)
8969 for (unsigned int i = 0; i < identifiers.size(); ++i)
8970 addQualifierToExisting(loc, qualifier, *identifiers[i]);
8973 // Make sure 'invariant' isn't being applied to a non-allowed object.
8974 void TParseContext::invariantCheck(const TSourceLoc& loc, const TQualifier& qualifier)
8976 if (! qualifier.invariant)
8979 bool pipeOut = qualifier.isPipeOutput();
8980 bool pipeIn = qualifier.isPipeInput();
8981 if ((version >= 300 && isEsProfile()) || (!isEsProfile() && version >= 420)) {
8983 error(loc, "can only apply to an output", "invariant", "");
8985 if ((language == EShLangVertex && pipeIn) || (! pipeOut && ! pipeIn))
8986 error(loc, "can only apply to an output, or to an input in a non-vertex stage\n", "invariant", "");
8991 // Updating default qualifier for the case of a declaration with just a qualifier,
8992 // no type, block, or identifier.
8994 void TParseContext::updateStandaloneQualifierDefaults(const TSourceLoc& loc, const TPublicType& publicType)
8997 if (publicType.shaderQualifiers.vertices != TQualifier::layoutNotSet) {
8998 assert(language == EShLangTessControl || language == EShLangGeometry || language == EShLangMesh);
8999 const char* id = (language == EShLangTessControl) ? "vertices" : "max_vertices";
9001 if (publicType.qualifier.storage != EvqVaryingOut)
9002 error(loc, "can only apply to 'out'", id, "");
9003 if (! intermediate.setVertices(publicType.shaderQualifiers.vertices))
9004 error(loc, "cannot change previously set layout value", id, "");
9006 if (language == EShLangTessControl)
9007 checkIoArraysConsistency(loc);
9009 if (publicType.shaderQualifiers.primitives != TQualifier::layoutNotSet) {
9010 assert(language == EShLangMesh);
9011 const char* id = "max_primitives";
9013 if (publicType.qualifier.storage != EvqVaryingOut)
9014 error(loc, "can only apply to 'out'", id, "");
9015 if (! intermediate.setPrimitives(publicType.shaderQualifiers.primitives))
9016 error(loc, "cannot change previously set layout value", id, "");
9018 if (publicType.shaderQualifiers.invocations != TQualifier::layoutNotSet) {
9019 if (publicType.qualifier.storage != EvqVaryingIn)
9020 error(loc, "can only apply to 'in'", "invocations", "");
9021 if (! intermediate.setInvocations(publicType.shaderQualifiers.invocations))
9022 error(loc, "cannot change previously set layout value", "invocations", "");
9024 if (publicType.shaderQualifiers.geometry != ElgNone) {
9025 if (publicType.qualifier.storage == EvqVaryingIn) {
9026 switch (publicType.shaderQualifiers.geometry) {
9029 case ElgLinesAdjacency:
9031 case ElgTrianglesAdjacency:
9034 if (language == EShLangMesh) {
9035 error(loc, "cannot apply to input", TQualifier::getGeometryString(publicType.shaderQualifiers.geometry), "");
9038 if (intermediate.setInputPrimitive(publicType.shaderQualifiers.geometry)) {
9039 if (language == EShLangGeometry)
9040 checkIoArraysConsistency(loc);
9042 error(loc, "cannot change previously set input primitive", TQualifier::getGeometryString(publicType.shaderQualifiers.geometry), "");
9045 error(loc, "cannot apply to input", TQualifier::getGeometryString(publicType.shaderQualifiers.geometry), "");
9047 } else if (publicType.qualifier.storage == EvqVaryingOut) {
9048 switch (publicType.shaderQualifiers.geometry) {
9051 if (language != EShLangMesh) {
9052 error(loc, "cannot apply to 'out'", TQualifier::getGeometryString(publicType.shaderQualifiers.geometry), "");
9058 case ElgTriangleStrip:
9059 if (! intermediate.setOutputPrimitive(publicType.shaderQualifiers.geometry))
9060 error(loc, "cannot change previously set output primitive", TQualifier::getGeometryString(publicType.shaderQualifiers.geometry), "");
9063 error(loc, "cannot apply to 'out'", TQualifier::getGeometryString(publicType.shaderQualifiers.geometry), "");
9066 error(loc, "cannot apply to:", TQualifier::getGeometryString(publicType.shaderQualifiers.geometry), GetStorageQualifierString(publicType.qualifier.storage));
9068 if (publicType.shaderQualifiers.spacing != EvsNone) {
9069 if (publicType.qualifier.storage == EvqVaryingIn) {
9070 if (! intermediate.setVertexSpacing(publicType.shaderQualifiers.spacing))
9071 error(loc, "cannot change previously set vertex spacing", TQualifier::getVertexSpacingString(publicType.shaderQualifiers.spacing), "");
9073 error(loc, "can only apply to 'in'", TQualifier::getVertexSpacingString(publicType.shaderQualifiers.spacing), "");
9075 if (publicType.shaderQualifiers.order != EvoNone) {
9076 if (publicType.qualifier.storage == EvqVaryingIn) {
9077 if (! intermediate.setVertexOrder(publicType.shaderQualifiers.order))
9078 error(loc, "cannot change previously set vertex order", TQualifier::getVertexOrderString(publicType.shaderQualifiers.order), "");
9080 error(loc, "can only apply to 'in'", TQualifier::getVertexOrderString(publicType.shaderQualifiers.order), "");
9082 if (publicType.shaderQualifiers.pointMode) {
9083 if (publicType.qualifier.storage == EvqVaryingIn)
9084 intermediate.setPointMode();
9086 error(loc, "can only apply to 'in'", "point_mode", "");
9089 for (int i = 0; i < 3; ++i) {
9090 if (publicType.shaderQualifiers.localSizeNotDefault[i]) {
9091 if (publicType.qualifier.storage == EvqVaryingIn) {
9092 if (! intermediate.setLocalSize(i, publicType.shaderQualifiers.localSize[i]))
9093 error(loc, "cannot change previously set size", "local_size", "");
9096 if (language == EShLangCompute) {
9098 case 0: max = resources.maxComputeWorkGroupSizeX; break;
9099 case 1: max = resources.maxComputeWorkGroupSizeY; break;
9100 case 2: max = resources.maxComputeWorkGroupSizeZ; break;
9103 if (intermediate.getLocalSize(i) > (unsigned int)max)
9104 error(loc, "too large; see gl_MaxComputeWorkGroupSize", "local_size", "");
9107 else if (language == EShLangMesh) {
9110 max = extensionTurnedOn(E_GL_EXT_mesh_shader) ?
9111 resources.maxMeshWorkGroupSizeX_EXT :
9112 resources.maxMeshWorkGroupSizeX_NV;
9115 max = extensionTurnedOn(E_GL_EXT_mesh_shader) ?
9116 resources.maxMeshWorkGroupSizeY_EXT :
9117 resources.maxMeshWorkGroupSizeY_NV ;
9120 max = extensionTurnedOn(E_GL_EXT_mesh_shader) ?
9121 resources.maxMeshWorkGroupSizeZ_EXT :
9122 resources.maxMeshWorkGroupSizeZ_NV ;
9126 if (intermediate.getLocalSize(i) > (unsigned int)max) {
9127 TString maxsErrtring = "too large, see ";
9128 maxsErrtring.append(extensionTurnedOn(E_GL_EXT_mesh_shader) ?
9129 "gl_MaxMeshWorkGroupSizeEXT" : "gl_MaxMeshWorkGroupSizeNV");
9130 error(loc, maxsErrtring.c_str(), "local_size", "");
9132 } else if (language == EShLangTask) {
9135 max = extensionTurnedOn(E_GL_EXT_mesh_shader) ?
9136 resources.maxTaskWorkGroupSizeX_EXT :
9137 resources.maxTaskWorkGroupSizeX_NV;
9140 max = extensionTurnedOn(E_GL_EXT_mesh_shader) ?
9141 resources.maxTaskWorkGroupSizeY_EXT:
9142 resources.maxTaskWorkGroupSizeY_NV;
9145 max = extensionTurnedOn(E_GL_EXT_mesh_shader) ?
9146 resources.maxTaskWorkGroupSizeZ_EXT:
9147 resources.maxTaskWorkGroupSizeZ_NV;
9151 if (intermediate.getLocalSize(i) > (unsigned int)max) {
9152 TString maxsErrtring = "too large, see ";
9153 maxsErrtring.append(extensionTurnedOn(E_GL_EXT_mesh_shader) ?
9154 "gl_MaxTaskWorkGroupSizeEXT" : "gl_MaxTaskWorkGroupSizeNV");
9155 error(loc, maxsErrtring.c_str(), "local_size", "");
9163 // Fix the existing constant gl_WorkGroupSize with this new information.
9164 TVariable* workGroupSize = getEditableVariable("gl_WorkGroupSize");
9165 if (workGroupSize != nullptr)
9166 workGroupSize->getWritableConstArray()[i].setUConst(intermediate.getLocalSize(i));
9169 error(loc, "can only apply to 'in'", "local_size", "");
9171 if (publicType.shaderQualifiers.localSizeSpecId[i] != TQualifier::layoutNotSet) {
9172 if (publicType.qualifier.storage == EvqVaryingIn) {
9173 if (! intermediate.setLocalSizeSpecId(i, publicType.shaderQualifiers.localSizeSpecId[i]))
9174 error(loc, "cannot change previously set size", "local_size", "");
9176 error(loc, "can only apply to 'in'", "local_size id", "");
9177 // Set the workgroup built-in variable as a specialization constant
9178 TVariable* workGroupSize = getEditableVariable("gl_WorkGroupSize");
9179 if (workGroupSize != nullptr)
9180 workGroupSize->getWritableType().getQualifier().specConstant = true;
9185 if (publicType.shaderQualifiers.earlyFragmentTests) {
9186 if (publicType.qualifier.storage == EvqVaryingIn)
9187 intermediate.setEarlyFragmentTests();
9189 error(loc, "can only apply to 'in'", "early_fragment_tests", "");
9191 if (publicType.shaderQualifiers.earlyAndLateFragmentTestsAMD) {
9192 if (publicType.qualifier.storage == EvqVaryingIn)
9193 intermediate.setEarlyAndLateFragmentTestsAMD();
9195 error(loc, "can only apply to 'in'", "early_and_late_fragment_tests_amd", "");
9197 if (publicType.shaderQualifiers.postDepthCoverage) {
9198 if (publicType.qualifier.storage == EvqVaryingIn)
9199 intermediate.setPostDepthCoverage();
9201 error(loc, "can only apply to 'in'", "post_coverage_coverage", "");
9203 if (publicType.shaderQualifiers.hasBlendEquation()) {
9204 if (publicType.qualifier.storage != EvqVaryingOut)
9205 error(loc, "can only apply to 'out'", "blend equation", "");
9207 if (publicType.shaderQualifiers.interlockOrdering) {
9208 if (publicType.qualifier.storage == EvqVaryingIn) {
9209 if (!intermediate.setInterlockOrdering(publicType.shaderQualifiers.interlockOrdering))
9210 error(loc, "cannot change previously set fragment shader interlock ordering", TQualifier::getInterlockOrderingString(publicType.shaderQualifiers.interlockOrdering), "");
9213 error(loc, "can only apply to 'in'", TQualifier::getInterlockOrderingString(publicType.shaderQualifiers.interlockOrdering), "");
9216 if (publicType.shaderQualifiers.layoutDerivativeGroupQuads &&
9217 publicType.shaderQualifiers.layoutDerivativeGroupLinear) {
9218 error(loc, "cannot be both specified", "derivative_group_quadsNV and derivative_group_linearNV", "");
9221 if (publicType.shaderQualifiers.layoutDerivativeGroupQuads) {
9222 if (publicType.qualifier.storage == EvqVaryingIn) {
9223 if ((intermediate.getLocalSize(0) & 1) ||
9224 (intermediate.getLocalSize(1) & 1))
9225 error(loc, "requires local_size_x and local_size_y to be multiple of two", "derivative_group_quadsNV", "");
9227 intermediate.setLayoutDerivativeMode(LayoutDerivativeGroupQuads);
9230 error(loc, "can only apply to 'in'", "derivative_group_quadsNV", "");
9232 if (publicType.shaderQualifiers.layoutDerivativeGroupLinear) {
9233 if (publicType.qualifier.storage == EvqVaryingIn) {
9234 if((intermediate.getLocalSize(0) *
9235 intermediate.getLocalSize(1) *
9236 intermediate.getLocalSize(2)) % 4 != 0)
9237 error(loc, "requires total group size to be multiple of four", "derivative_group_linearNV", "");
9239 intermediate.setLayoutDerivativeMode(LayoutDerivativeGroupLinear);
9242 error(loc, "can only apply to 'in'", "derivative_group_linearNV", "");
9244 // Check mesh out array sizes, once all the necessary out qualifiers are defined.
9245 if ((language == EShLangMesh) &&
9246 (intermediate.getVertices() != TQualifier::layoutNotSet) &&
9247 (intermediate.getPrimitives() != TQualifier::layoutNotSet) &&
9248 (intermediate.getOutputPrimitive() != ElgNone))
9250 checkIoArraysConsistency(loc);
9253 if (publicType.shaderQualifiers.layoutPrimitiveCulling) {
9254 if (publicType.qualifier.storage != EvqTemporary)
9255 error(loc, "layout qualifier can not have storage qualifiers", "primitive_culling","", "");
9257 intermediate.setLayoutPrimitiveCulling();
9259 // Exit early as further checks are not valid
9263 const TQualifier& qualifier = publicType.qualifier;
9265 if (qualifier.isAuxiliary() ||
9266 qualifier.isMemory() ||
9267 qualifier.isInterpolation() ||
9268 qualifier.precision != EpqNone)
9269 error(loc, "cannot use auxiliary, memory, interpolation, or precision qualifier in a default qualifier declaration (declaration with no type)", "qualifier", "");
9271 // "The offset qualifier can only be used on block members of blocks..."
9272 // "The align qualifier can only be used on blocks or block members..."
9273 if (qualifier.hasOffset() ||
9274 qualifier.hasAlign())
9275 error(loc, "cannot use offset or align qualifiers in a default qualifier declaration (declaration with no type)", "layout qualifier", "");
9277 layoutQualifierCheck(loc, qualifier);
9279 switch (qualifier.storage) {
9281 if (qualifier.hasMatrix())
9282 globalUniformDefaults.layoutMatrix = qualifier.layoutMatrix;
9283 if (qualifier.hasPacking())
9284 globalUniformDefaults.layoutPacking = qualifier.layoutPacking;
9287 if (qualifier.hasMatrix())
9288 globalBufferDefaults.layoutMatrix = qualifier.layoutMatrix;
9289 if (qualifier.hasPacking())
9290 globalBufferDefaults.layoutPacking = qualifier.layoutPacking;
9296 if (qualifier.hasStream())
9297 globalOutputDefaults.layoutStream = qualifier.layoutStream;
9298 if (qualifier.hasXfbBuffer())
9299 globalOutputDefaults.layoutXfbBuffer = qualifier.layoutXfbBuffer;
9300 if (globalOutputDefaults.hasXfbBuffer() && qualifier.hasXfbStride()) {
9301 if (! intermediate.setXfbBufferStride(globalOutputDefaults.layoutXfbBuffer, qualifier.layoutXfbStride))
9302 error(loc, "all stride settings must match for xfb buffer", "xfb_stride", "%d", qualifier.layoutXfbBuffer);
9307 if (qualifier.hasMatrix())
9308 globalSharedDefaults.layoutMatrix = qualifier.layoutMatrix;
9309 if (qualifier.hasPacking())
9310 globalSharedDefaults.layoutPacking = qualifier.layoutPacking;
9313 error(loc, "default qualifier requires 'uniform', 'buffer', 'in', 'out' or 'shared' storage qualification", "", "");
9317 if (qualifier.hasBinding())
9318 error(loc, "cannot declare a default, include a type or full declaration", "binding", "");
9319 if (qualifier.hasAnyLocation())
9320 error(loc, "cannot declare a default, use a full declaration", "location/component/index", "");
9321 if (qualifier.hasXfbOffset())
9322 error(loc, "cannot declare a default, use a full declaration", "xfb_offset", "");
9323 if (qualifier.isPushConstant())
9324 error(loc, "cannot declare a default, can only be used on a block", "push_constant", "");
9325 if (qualifier.hasBufferReference())
9326 error(loc, "cannot declare a default, can only be used on a block", "buffer_reference", "");
9327 if (qualifier.hasSpecConstantId())
9328 error(loc, "cannot declare a default, can only be used on a scalar", "constant_id", "");
9329 if (qualifier.isShaderRecord())
9330 error(loc, "cannot declare a default, can only be used on a block", "shaderRecordNV", "");
9334 // Take the sequence of statements that has been built up since the last case/default,
9335 // put it on the list of top-level nodes for the current (inner-most) switch statement,
9336 // and follow that by the case/default we are on now. (See switch topology comment on
9339 void TParseContext::wrapupSwitchSubsequence(TIntermAggregate* statements, TIntermNode* branchNode)
9341 TIntermSequence* switchSequence = switchSequenceStack.back();
9344 if (switchSequence->size() == 0)
9345 error(statements->getLoc(), "cannot have statements before first case/default label", "switch", "");
9346 statements->setOperator(EOpSequence);
9347 switchSequence->push_back(statements);
9350 // check all previous cases for the same label (or both are 'default')
9351 for (unsigned int s = 0; s < switchSequence->size(); ++s) {
9352 TIntermBranch* prevBranch = (*switchSequence)[s]->getAsBranchNode();
9354 TIntermTyped* prevExpression = prevBranch->getExpression();
9355 TIntermTyped* newExpression = branchNode->getAsBranchNode()->getExpression();
9356 if (prevExpression == nullptr && newExpression == nullptr)
9357 error(branchNode->getLoc(), "duplicate label", "default", "");
9358 else if (prevExpression != nullptr &&
9359 newExpression != nullptr &&
9360 prevExpression->getAsConstantUnion() &&
9361 newExpression->getAsConstantUnion() &&
9362 prevExpression->getAsConstantUnion()->getConstArray()[0].getIConst() ==
9363 newExpression->getAsConstantUnion()->getConstArray()[0].getIConst())
9364 error(branchNode->getLoc(), "duplicated value", "case", "");
9367 switchSequence->push_back(branchNode);
9372 // Turn the top-level node sequence built up of wrapupSwitchSubsequence9)
9373 // into a switch node.
9375 TIntermNode* TParseContext::addSwitch(const TSourceLoc& loc, TIntermTyped* expression, TIntermAggregate* lastStatements)
9377 profileRequires(loc, EEsProfile, 300, nullptr, "switch statements");
9378 profileRequires(loc, ENoProfile, 130, nullptr, "switch statements");
9380 wrapupSwitchSubsequence(lastStatements, nullptr);
9382 if (expression == nullptr ||
9383 (expression->getBasicType() != EbtInt && expression->getBasicType() != EbtUint) ||
9384 expression->getType().isArray() || expression->getType().isMatrix() || expression->getType().isVector())
9385 error(loc, "condition must be a scalar integer expression", "switch", "");
9387 // If there is nothing to do, drop the switch but still execute the expression
9388 TIntermSequence* switchSequence = switchSequenceStack.back();
9389 if (switchSequence->size() == 0)
9392 if (lastStatements == nullptr) {
9393 // This was originally an ERRROR, because early versions of the specification said
9394 // "it is an error to have no statement between a label and the end of the switch statement."
9395 // The specifications were updated to remove this (being ill-defined what a "statement" was),
9396 // so, this became a warning. However, 3.0 tests still check for the error.
9397 if (isEsProfile() && (version <= 300 || version >= 320) && ! relaxedErrors())
9398 error(loc, "last case/default label not followed by statements", "switch", "");
9399 else if (!isEsProfile() && (version <= 430 || version >= 460))
9400 error(loc, "last case/default label not followed by statements", "switch", "");
9402 warn(loc, "last case/default label not followed by statements", "switch", "");
9405 // emulate a break for error recovery
9406 lastStatements = intermediate.makeAggregate(intermediate.addBranch(EOpBreak, loc));
9407 lastStatements->setOperator(EOpSequence);
9408 switchSequence->push_back(lastStatements);
9411 TIntermAggregate* body = new TIntermAggregate(EOpSequence);
9412 body->getSequence() = *switchSequenceStack.back();
9415 TIntermSwitch* switchNode = new TIntermSwitch(expression, body);
9416 switchNode->setLoc(loc);
9422 // When a struct used in block, and has it's own layout packing, layout matrix,
9423 // record the origin structure of a struct to map, and Record the structure copy to the copy table,
9425 const TTypeList* TParseContext::recordStructCopy(TStructRecord& record, const TType* originType, const TType* tmpType)
9427 size_t memberCount = tmpType->getStruct()->size();
9428 size_t originHash = 0, tmpHash = 0;
9429 std::hash<size_t> hasher;
9430 for (size_t i = 0; i < memberCount; i++) {
9431 size_t originMemberHash = hasher(originType->getStruct()->at(i).type->getQualifier().layoutPacking +
9432 originType->getStruct()->at(i).type->getQualifier().layoutMatrix);
9433 size_t tmpMemberHash = hasher(tmpType->getStruct()->at(i).type->getQualifier().layoutPacking +
9434 tmpType->getStruct()->at(i).type->getQualifier().layoutMatrix);
9435 originHash = hasher((originHash ^ originMemberHash) << 1);
9436 tmpHash = hasher((tmpHash ^ tmpMemberHash) << 1);
9438 const TTypeList* originStruct = originType->getStruct();
9439 const TTypeList* tmpStruct = tmpType->getStruct();
9440 if (originHash != tmpHash) {
9441 auto fixRecords = record.find(originStruct);
9442 if (fixRecords != record.end()) {
9443 auto fixRecord = fixRecords->second.find(tmpHash);
9444 if (fixRecord != fixRecords->second.end()) {
9445 return fixRecord->second;
9447 record[originStruct][tmpHash] = tmpStruct;
9451 record[originStruct] = std::map<size_t, const TTypeList*>();
9452 record[originStruct][tmpHash] = tmpStruct;
9456 return originStruct;
9459 } // end namespace glslang