2 // Copyright (C) 2014-2016 LunarG, Inc.
3 // Copyright (C) 2015-2016 Google, Inc.
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37 // Visit the nodes in the glslang intermediate tree representation to
38 // translate them to SPIR-V.
42 #include "GlslangToSpv.h"
43 #include "SpvBuilder.h"
45 #include "GLSL.std.450.h"
46 #include "GLSL.ext.KHR.h"
48 #include "GLSL.ext.AMD.h"
51 #include "GLSL.ext.NV.h"
56 #include "../glslang/MachineIndependent/localintermediate.h"
57 #include "../glslang/MachineIndependent/SymbolTable.h"
58 #include "../glslang/Include/Common.h"
59 #include "../glslang/Include/revision.h"
71 // For low-order part of the generator's magic number. Bump up
72 // when there is a change in the style (e.g., if SSA form changes,
73 // or a different instruction sequence to do something gets used).
74 const int GeneratorVersion = 1;
77 class SpecConstantOpModeGuard {
79 SpecConstantOpModeGuard(spv::Builder* builder)
81 previous_flag_ = builder->isInSpecConstCodeGenMode();
83 ~SpecConstantOpModeGuard() {
84 previous_flag_ ? builder_->setToSpecConstCodeGenMode()
85 : builder_->setToNormalCodeGenMode();
87 void turnOnSpecConstantOpMode() {
88 builder_->setToSpecConstCodeGenMode();
92 spv::Builder* builder_;
98 // The main holder of information for translating glslang to SPIR-V.
100 // Derives from the AST walking base class.
102 class TGlslangToSpvTraverser : public glslang::TIntermTraverser {
104 TGlslangToSpvTraverser(const glslang::TIntermediate*, spv::SpvBuildLogger* logger, glslang::SpvOptions& options);
105 virtual ~TGlslangToSpvTraverser() { }
107 bool visitAggregate(glslang::TVisit, glslang::TIntermAggregate*);
108 bool visitBinary(glslang::TVisit, glslang::TIntermBinary*);
109 void visitConstantUnion(glslang::TIntermConstantUnion*);
110 bool visitSelection(glslang::TVisit, glslang::TIntermSelection*);
111 bool visitSwitch(glslang::TVisit, glslang::TIntermSwitch*);
112 void visitSymbol(glslang::TIntermSymbol* symbol);
113 bool visitUnary(glslang::TVisit, glslang::TIntermUnary*);
114 bool visitLoop(glslang::TVisit, glslang::TIntermLoop*);
115 bool visitBranch(glslang::TVisit visit, glslang::TIntermBranch*);
118 void dumpSpv(std::vector<unsigned int>& out);
121 spv::Decoration TranslateInterpolationDecoration(const glslang::TQualifier& qualifier);
122 spv::Decoration TranslateAuxiliaryStorageDecoration(const glslang::TQualifier& qualifier);
123 spv::BuiltIn TranslateBuiltInDecoration(glslang::TBuiltInVariable, bool memberDeclaration);
124 spv::ImageFormat TranslateImageFormat(const glslang::TType& type);
125 spv::LoopControlMask TranslateLoopControl(glslang::TLoopControl) const;
126 spv::StorageClass TranslateStorageClass(const glslang::TType&);
127 spv::Id createSpvVariable(const glslang::TIntermSymbol*);
128 spv::Id getSampledType(const glslang::TSampler&);
129 spv::Id getInvertedSwizzleType(const glslang::TIntermTyped&);
130 spv::Id createInvertedSwizzle(spv::Decoration precision, const glslang::TIntermTyped&, spv::Id parentResult);
131 void convertSwizzle(const glslang::TIntermAggregate&, std::vector<unsigned>& swizzle);
132 spv::Id convertGlslangToSpvType(const glslang::TType& type);
133 spv::Id convertGlslangToSpvType(const glslang::TType& type, glslang::TLayoutPacking, const glslang::TQualifier&);
134 bool filterMember(const glslang::TType& member);
135 spv::Id convertGlslangStructToSpvType(const glslang::TType&, const glslang::TTypeList* glslangStruct,
136 glslang::TLayoutPacking, const glslang::TQualifier&);
137 void decorateStructType(const glslang::TType&, const glslang::TTypeList* glslangStruct, glslang::TLayoutPacking,
138 const glslang::TQualifier&, spv::Id);
139 spv::Id makeArraySizeId(const glslang::TArraySizes&, int dim);
140 spv::Id accessChainLoad(const glslang::TType& type);
141 void accessChainStore(const glslang::TType& type, spv::Id rvalue);
142 void multiTypeStore(const glslang::TType&, spv::Id rValue);
143 glslang::TLayoutPacking getExplicitLayout(const glslang::TType& type) const;
144 int getArrayStride(const glslang::TType& arrayType, glslang::TLayoutPacking, glslang::TLayoutMatrix);
145 int getMatrixStride(const glslang::TType& matrixType, glslang::TLayoutPacking, glslang::TLayoutMatrix);
146 void updateMemberOffset(const glslang::TType& structType, const glslang::TType& memberType, int& currentOffset, int& nextOffset, glslang::TLayoutPacking, glslang::TLayoutMatrix);
147 void declareUseOfStructMember(const glslang::TTypeList& members, int glslangMember);
149 bool isShaderEntryPoint(const glslang::TIntermAggregate* node);
150 void makeFunctions(const glslang::TIntermSequence&);
151 void makeGlobalInitializers(const glslang::TIntermSequence&);
152 void visitFunctions(const glslang::TIntermSequence&);
153 void handleFunctionEntry(const glslang::TIntermAggregate* node);
154 void translateArguments(const glslang::TIntermAggregate& node, std::vector<spv::Id>& arguments);
155 void translateArguments(glslang::TIntermUnary& node, std::vector<spv::Id>& arguments);
156 spv::Id createImageTextureFunctionCall(glslang::TIntermOperator* node);
157 spv::Id handleUserFunctionCall(const glslang::TIntermAggregate*);
159 spv::Id createBinaryOperation(glslang::TOperator op, spv::Decoration precision, spv::Decoration noContraction, spv::Id typeId, spv::Id left, spv::Id right, glslang::TBasicType typeProxy, bool reduceComparison = true);
160 spv::Id createBinaryMatrixOperation(spv::Op, spv::Decoration precision, spv::Decoration noContraction, spv::Id typeId, spv::Id left, spv::Id right);
161 spv::Id createUnaryOperation(glslang::TOperator op, spv::Decoration precision, spv::Decoration noContraction, spv::Id typeId, spv::Id operand,glslang::TBasicType typeProxy);
162 spv::Id createUnaryMatrixOperation(spv::Op op, spv::Decoration precision, spv::Decoration noContraction, spv::Id typeId, spv::Id operand,glslang::TBasicType typeProxy);
163 spv::Id createConversion(glslang::TOperator op, spv::Decoration precision, spv::Decoration noContraction, spv::Id destTypeId, spv::Id operand, glslang::TBasicType typeProxy);
164 spv::Id makeSmearedConstant(spv::Id constant, int vectorSize);
165 spv::Id createAtomicOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId, std::vector<spv::Id>& operands, glslang::TBasicType typeProxy);
166 spv::Id createInvocationsOperation(glslang::TOperator op, spv::Id typeId, std::vector<spv::Id>& operands, glslang::TBasicType typeProxy);
167 spv::Id CreateInvocationsVectorOperation(spv::Op op, spv::GroupOperation groupOperation, spv::Id typeId, std::vector<spv::Id>& operands);
168 spv::Id createMiscOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId, std::vector<spv::Id>& operands, glslang::TBasicType typeProxy);
169 spv::Id createNoArgOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId);
170 spv::Id getSymbolId(const glslang::TIntermSymbol* node);
171 void addDecoration(spv::Id id, spv::Decoration dec);
172 void addDecoration(spv::Id id, spv::Decoration dec, unsigned value);
173 void addMemberDecoration(spv::Id id, int member, spv::Decoration dec);
174 void addMemberDecoration(spv::Id id, int member, spv::Decoration dec, unsigned value);
175 spv::Id createSpvConstant(const glslang::TIntermTyped&);
176 spv::Id createSpvConstantFromConstUnionArray(const glslang::TType& type, const glslang::TConstUnionArray&, int& nextConst, bool specConstant);
177 bool isTrivialLeaf(const glslang::TIntermTyped* node);
178 bool isTrivial(const glslang::TIntermTyped* node);
179 spv::Id createShortCircuit(glslang::TOperator, glslang::TIntermTyped& left, glslang::TIntermTyped& right);
180 spv::Id getExtBuiltins(const char* name);
182 glslang::SpvOptions& options;
183 spv::Function* shaderEntry;
184 spv::Function* currentFunction;
185 spv::Instruction* entryPoint;
188 spv::SpvBuildLogger* logger;
190 // There is a 1:1 mapping between a spv builder and a module; this is thread safe
191 spv::Builder builder;
193 bool entryPointTerminated;
194 bool linkageOnly; // true when visiting the set of objects in the AST present only for establishing interface, whether or not they were statically used
195 std::set<spv::Id> iOSet; // all input/output variables from either static use or declaration of interface
196 const glslang::TIntermediate* glslangIntermediate;
198 std::unordered_map<const char*, spv::Id> extBuiltinMap;
200 std::unordered_map<int, spv::Id> symbolValues;
201 std::unordered_set<int> rValueParameters; // set of formal function parameters passed as rValues, rather than a pointer
202 std::unordered_map<std::string, spv::Function*> functionMap;
203 std::unordered_map<const glslang::TTypeList*, spv::Id> structMap[glslang::ElpCount][glslang::ElmCount];
204 std::unordered_map<const glslang::TTypeList*, std::vector<int> > memberRemapper; // for mapping glslang block indices to spv indices (e.g., due to hidden members)
205 std::stack<bool> breakForLoop; // false means break for switch
209 // Helper functions for translating glslang representations to SPIR-V enumerants.
212 // Translate glslang profile to SPIR-V source language.
213 spv::SourceLanguage TranslateSourceLanguage(glslang::EShSource source, EProfile profile)
216 case glslang::EShSourceGlsl:
220 case ECompatibilityProfile:
221 return spv::SourceLanguageGLSL;
223 return spv::SourceLanguageESSL;
225 return spv::SourceLanguageUnknown;
227 case glslang::EShSourceHlsl:
228 return spv::SourceLanguageHLSL;
230 return spv::SourceLanguageUnknown;
234 // Translate glslang language (stage) to SPIR-V execution model.
235 spv::ExecutionModel TranslateExecutionModel(EShLanguage stage)
238 case EShLangVertex: return spv::ExecutionModelVertex;
239 case EShLangTessControl: return spv::ExecutionModelTessellationControl;
240 case EShLangTessEvaluation: return spv::ExecutionModelTessellationEvaluation;
241 case EShLangGeometry: return spv::ExecutionModelGeometry;
242 case EShLangFragment: return spv::ExecutionModelFragment;
243 case EShLangCompute: return spv::ExecutionModelGLCompute;
246 return spv::ExecutionModelFragment;
250 // Translate glslang sampler type to SPIR-V dimensionality.
251 spv::Dim TranslateDimensionality(const glslang::TSampler& sampler)
253 switch (sampler.dim) {
254 case glslang::Esd1D: return spv::Dim1D;
255 case glslang::Esd2D: return spv::Dim2D;
256 case glslang::Esd3D: return spv::Dim3D;
257 case glslang::EsdCube: return spv::DimCube;
258 case glslang::EsdRect: return spv::DimRect;
259 case glslang::EsdBuffer: return spv::DimBuffer;
260 case glslang::EsdSubpass: return spv::DimSubpassData;
267 // Translate glslang precision to SPIR-V precision decorations.
268 spv::Decoration TranslatePrecisionDecoration(glslang::TPrecisionQualifier glslangPrecision)
270 switch (glslangPrecision) {
271 case glslang::EpqLow: return spv::DecorationRelaxedPrecision;
272 case glslang::EpqMedium: return spv::DecorationRelaxedPrecision;
274 return spv::NoPrecision;
278 // Translate glslang type to SPIR-V precision decorations.
279 spv::Decoration TranslatePrecisionDecoration(const glslang::TType& type)
281 return TranslatePrecisionDecoration(type.getQualifier().precision);
284 // Translate glslang type to SPIR-V block decorations.
285 spv::Decoration TranslateBlockDecoration(const glslang::TType& type, bool useStorageBuffer)
287 if (type.getBasicType() == glslang::EbtBlock) {
288 switch (type.getQualifier().storage) {
289 case glslang::EvqUniform: return spv::DecorationBlock;
290 case glslang::EvqBuffer: return useStorageBuffer ? spv::DecorationBlock : spv::DecorationBufferBlock;
291 case glslang::EvqVaryingIn: return spv::DecorationBlock;
292 case glslang::EvqVaryingOut: return spv::DecorationBlock;
299 return spv::DecorationMax;
302 // Translate glslang type to SPIR-V memory decorations.
303 void TranslateMemoryDecoration(const glslang::TQualifier& qualifier, std::vector<spv::Decoration>& memory)
305 if (qualifier.coherent)
306 memory.push_back(spv::DecorationCoherent);
307 if (qualifier.volatil)
308 memory.push_back(spv::DecorationVolatile);
309 if (qualifier.restrict)
310 memory.push_back(spv::DecorationRestrict);
311 if (qualifier.readonly)
312 memory.push_back(spv::DecorationNonWritable);
313 if (qualifier.writeonly)
314 memory.push_back(spv::DecorationNonReadable);
317 // Translate glslang type to SPIR-V layout decorations.
318 spv::Decoration TranslateLayoutDecoration(const glslang::TType& type, glslang::TLayoutMatrix matrixLayout)
320 if (type.isMatrix()) {
321 switch (matrixLayout) {
322 case glslang::ElmRowMajor:
323 return spv::DecorationRowMajor;
324 case glslang::ElmColumnMajor:
325 return spv::DecorationColMajor;
327 // opaque layouts don't need a majorness
328 return spv::DecorationMax;
331 switch (type.getBasicType()) {
333 return spv::DecorationMax;
335 case glslang::EbtBlock:
336 switch (type.getQualifier().storage) {
337 case glslang::EvqUniform:
338 case glslang::EvqBuffer:
339 switch (type.getQualifier().layoutPacking) {
340 case glslang::ElpShared: return spv::DecorationGLSLShared;
341 case glslang::ElpPacked: return spv::DecorationGLSLPacked;
343 return spv::DecorationMax;
345 case glslang::EvqVaryingIn:
346 case glslang::EvqVaryingOut:
347 assert(type.getQualifier().layoutPacking == glslang::ElpNone);
348 return spv::DecorationMax;
351 return spv::DecorationMax;
357 // Translate glslang type to SPIR-V interpolation decorations.
358 // Returns spv::DecorationMax when no decoration
359 // should be applied.
360 spv::Decoration TGlslangToSpvTraverser::TranslateInterpolationDecoration(const glslang::TQualifier& qualifier)
362 if (qualifier.smooth)
363 // Smooth decoration doesn't exist in SPIR-V 1.0
364 return spv::DecorationMax;
365 else if (qualifier.nopersp)
366 return spv::DecorationNoPerspective;
367 else if (qualifier.flat)
368 return spv::DecorationFlat;
369 #ifdef AMD_EXTENSIONS
370 else if (qualifier.explicitInterp) {
371 builder.addExtension(spv::E_SPV_AMD_shader_explicit_vertex_parameter);
372 return spv::DecorationExplicitInterpAMD;
376 return spv::DecorationMax;
379 // Translate glslang type to SPIR-V auxiliary storage decorations.
380 // Returns spv::DecorationMax when no decoration
381 // should be applied.
382 spv::Decoration TGlslangToSpvTraverser::TranslateAuxiliaryStorageDecoration(const glslang::TQualifier& qualifier)
385 return spv::DecorationPatch;
386 else if (qualifier.centroid)
387 return spv::DecorationCentroid;
388 else if (qualifier.sample) {
389 builder.addCapability(spv::CapabilitySampleRateShading);
390 return spv::DecorationSample;
392 return spv::DecorationMax;
395 // If glslang type is invariant, return SPIR-V invariant decoration.
396 spv::Decoration TranslateInvariantDecoration(const glslang::TQualifier& qualifier)
398 if (qualifier.invariant)
399 return spv::DecorationInvariant;
401 return spv::DecorationMax;
404 // If glslang type is noContraction, return SPIR-V NoContraction decoration.
405 spv::Decoration TranslateNoContractionDecoration(const glslang::TQualifier& qualifier)
407 if (qualifier.noContraction)
408 return spv::DecorationNoContraction;
410 return spv::DecorationMax;
413 // Translate a glslang built-in variable to a SPIR-V built in decoration. Also generate
414 // associated capabilities when required. For some built-in variables, a capability
415 // is generated only when using the variable in an executable instruction, but not when
416 // just declaring a struct member variable with it. This is true for PointSize,
417 // ClipDistance, and CullDistance.
418 spv::BuiltIn TGlslangToSpvTraverser::TranslateBuiltInDecoration(glslang::TBuiltInVariable builtIn, bool memberDeclaration)
421 case glslang::EbvPointSize:
422 // Defer adding the capability until the built-in is actually used.
423 if (! memberDeclaration) {
424 switch (glslangIntermediate->getStage()) {
425 case EShLangGeometry:
426 builder.addCapability(spv::CapabilityGeometryPointSize);
428 case EShLangTessControl:
429 case EShLangTessEvaluation:
430 builder.addCapability(spv::CapabilityTessellationPointSize);
436 return spv::BuiltInPointSize;
438 // These *Distance capabilities logically belong here, but if the member is declared and
439 // then never used, consumers of SPIR-V prefer the capability not be declared.
440 // They are now generated when used, rather than here when declared.
441 // Potentially, the specification should be more clear what the minimum
442 // use needed is to trigger the capability.
444 case glslang::EbvClipDistance:
445 if (!memberDeclaration)
446 builder.addCapability(spv::CapabilityClipDistance);
447 return spv::BuiltInClipDistance;
449 case glslang::EbvCullDistance:
450 if (!memberDeclaration)
451 builder.addCapability(spv::CapabilityCullDistance);
452 return spv::BuiltInCullDistance;
454 case glslang::EbvViewportIndex:
455 if (!memberDeclaration) {
456 builder.addCapability(spv::CapabilityMultiViewport);
458 if (glslangIntermediate->getStage() == EShLangVertex ||
459 glslangIntermediate->getStage() == EShLangTessControl ||
460 glslangIntermediate->getStage() == EShLangTessEvaluation) {
462 builder.addExtension(spv::E_SPV_NV_viewport_array2);
463 builder.addCapability(spv::CapabilityShaderViewportIndexLayerNV);
467 return spv::BuiltInViewportIndex;
469 case glslang::EbvSampleId:
470 builder.addCapability(spv::CapabilitySampleRateShading);
471 return spv::BuiltInSampleId;
473 case glslang::EbvSamplePosition:
474 builder.addCapability(spv::CapabilitySampleRateShading);
475 return spv::BuiltInSamplePosition;
477 case glslang::EbvSampleMask:
478 builder.addCapability(spv::CapabilitySampleRateShading);
479 return spv::BuiltInSampleMask;
481 case glslang::EbvLayer:
482 if (!memberDeclaration) {
483 builder.addCapability(spv::CapabilityGeometry);
485 if (glslangIntermediate->getStage() == EShLangVertex ||
486 glslangIntermediate->getStage() == EShLangTessControl ||
487 glslangIntermediate->getStage() == EShLangTessEvaluation) {
489 builder.addExtension(spv::E_SPV_NV_viewport_array2);
490 builder.addCapability(spv::CapabilityShaderViewportIndexLayerNV);
495 return spv::BuiltInLayer;
497 case glslang::EbvPosition: return spv::BuiltInPosition;
498 case glslang::EbvVertexId: return spv::BuiltInVertexId;
499 case glslang::EbvInstanceId: return spv::BuiltInInstanceId;
500 case glslang::EbvVertexIndex: return spv::BuiltInVertexIndex;
501 case glslang::EbvInstanceIndex: return spv::BuiltInInstanceIndex;
503 case glslang::EbvBaseVertex:
504 builder.addExtension(spv::E_SPV_KHR_shader_draw_parameters);
505 builder.addCapability(spv::CapabilityDrawParameters);
506 return spv::BuiltInBaseVertex;
508 case glslang::EbvBaseInstance:
509 builder.addExtension(spv::E_SPV_KHR_shader_draw_parameters);
510 builder.addCapability(spv::CapabilityDrawParameters);
511 return spv::BuiltInBaseInstance;
513 case glslang::EbvDrawId:
514 builder.addExtension(spv::E_SPV_KHR_shader_draw_parameters);
515 builder.addCapability(spv::CapabilityDrawParameters);
516 return spv::BuiltInDrawIndex;
518 case glslang::EbvPrimitiveId:
519 if (glslangIntermediate->getStage() == EShLangFragment)
520 builder.addCapability(spv::CapabilityGeometry);
521 return spv::BuiltInPrimitiveId;
523 case glslang::EbvInvocationId: return spv::BuiltInInvocationId;
524 case glslang::EbvTessLevelInner: return spv::BuiltInTessLevelInner;
525 case glslang::EbvTessLevelOuter: return spv::BuiltInTessLevelOuter;
526 case glslang::EbvTessCoord: return spv::BuiltInTessCoord;
527 case glslang::EbvPatchVertices: return spv::BuiltInPatchVertices;
528 case glslang::EbvFragCoord: return spv::BuiltInFragCoord;
529 case glslang::EbvPointCoord: return spv::BuiltInPointCoord;
530 case glslang::EbvFace: return spv::BuiltInFrontFacing;
531 case glslang::EbvFragDepth: return spv::BuiltInFragDepth;
532 case glslang::EbvHelperInvocation: return spv::BuiltInHelperInvocation;
533 case glslang::EbvNumWorkGroups: return spv::BuiltInNumWorkgroups;
534 case glslang::EbvWorkGroupSize: return spv::BuiltInWorkgroupSize;
535 case glslang::EbvWorkGroupId: return spv::BuiltInWorkgroupId;
536 case glslang::EbvLocalInvocationId: return spv::BuiltInLocalInvocationId;
537 case glslang::EbvLocalInvocationIndex: return spv::BuiltInLocalInvocationIndex;
538 case glslang::EbvGlobalInvocationId: return spv::BuiltInGlobalInvocationId;
540 case glslang::EbvSubGroupSize:
541 builder.addExtension(spv::E_SPV_KHR_shader_ballot);
542 builder.addCapability(spv::CapabilitySubgroupBallotKHR);
543 return spv::BuiltInSubgroupSize;
545 case glslang::EbvSubGroupInvocation:
546 builder.addExtension(spv::E_SPV_KHR_shader_ballot);
547 builder.addCapability(spv::CapabilitySubgroupBallotKHR);
548 return spv::BuiltInSubgroupLocalInvocationId;
550 case glslang::EbvSubGroupEqMask:
551 builder.addExtension(spv::E_SPV_KHR_shader_ballot);
552 builder.addCapability(spv::CapabilitySubgroupBallotKHR);
553 return spv::BuiltInSubgroupEqMaskKHR;
555 case glslang::EbvSubGroupGeMask:
556 builder.addExtension(spv::E_SPV_KHR_shader_ballot);
557 builder.addCapability(spv::CapabilitySubgroupBallotKHR);
558 return spv::BuiltInSubgroupGeMaskKHR;
560 case glslang::EbvSubGroupGtMask:
561 builder.addExtension(spv::E_SPV_KHR_shader_ballot);
562 builder.addCapability(spv::CapabilitySubgroupBallotKHR);
563 return spv::BuiltInSubgroupGtMaskKHR;
565 case glslang::EbvSubGroupLeMask:
566 builder.addExtension(spv::E_SPV_KHR_shader_ballot);
567 builder.addCapability(spv::CapabilitySubgroupBallotKHR);
568 return spv::BuiltInSubgroupLeMaskKHR;
570 case glslang::EbvSubGroupLtMask:
571 builder.addExtension(spv::E_SPV_KHR_shader_ballot);
572 builder.addCapability(spv::CapabilitySubgroupBallotKHR);
573 return spv::BuiltInSubgroupLtMaskKHR;
575 #ifdef AMD_EXTENSIONS
576 case glslang::EbvBaryCoordNoPersp:
577 builder.addExtension(spv::E_SPV_AMD_shader_explicit_vertex_parameter);
578 return spv::BuiltInBaryCoordNoPerspAMD;
580 case glslang::EbvBaryCoordNoPerspCentroid:
581 builder.addExtension(spv::E_SPV_AMD_shader_explicit_vertex_parameter);
582 return spv::BuiltInBaryCoordNoPerspCentroidAMD;
584 case glslang::EbvBaryCoordNoPerspSample:
585 builder.addExtension(spv::E_SPV_AMD_shader_explicit_vertex_parameter);
586 return spv::BuiltInBaryCoordNoPerspSampleAMD;
588 case glslang::EbvBaryCoordSmooth:
589 builder.addExtension(spv::E_SPV_AMD_shader_explicit_vertex_parameter);
590 return spv::BuiltInBaryCoordSmoothAMD;
592 case glslang::EbvBaryCoordSmoothCentroid:
593 builder.addExtension(spv::E_SPV_AMD_shader_explicit_vertex_parameter);
594 return spv::BuiltInBaryCoordSmoothCentroidAMD;
596 case glslang::EbvBaryCoordSmoothSample:
597 builder.addExtension(spv::E_SPV_AMD_shader_explicit_vertex_parameter);
598 return spv::BuiltInBaryCoordSmoothSampleAMD;
600 case glslang::EbvBaryCoordPullModel:
601 builder.addExtension(spv::E_SPV_AMD_shader_explicit_vertex_parameter);
602 return spv::BuiltInBaryCoordPullModelAMD;
605 case glslang::EbvDeviceIndex:
606 builder.addExtension(spv::E_SPV_KHR_device_group);
607 builder.addCapability(spv::CapabilityDeviceGroup);
608 return spv::BuiltInDeviceIndex;
610 case glslang::EbvViewIndex:
611 builder.addExtension(spv::E_SPV_KHR_multiview);
612 builder.addCapability(spv::CapabilityMultiView);
613 return spv::BuiltInViewIndex;
616 case glslang::EbvViewportMaskNV:
617 if (!memberDeclaration) {
618 builder.addExtension(spv::E_SPV_NV_viewport_array2);
619 builder.addCapability(spv::CapabilityShaderViewportMaskNV);
621 return spv::BuiltInViewportMaskNV;
622 case glslang::EbvSecondaryPositionNV:
623 if (!memberDeclaration) {
624 builder.addExtension(spv::E_SPV_NV_stereo_view_rendering);
625 builder.addCapability(spv::CapabilityShaderStereoViewNV);
627 return spv::BuiltInSecondaryPositionNV;
628 case glslang::EbvSecondaryViewportMaskNV:
629 if (!memberDeclaration) {
630 builder.addExtension(spv::E_SPV_NV_stereo_view_rendering);
631 builder.addCapability(spv::CapabilityShaderStereoViewNV);
633 return spv::BuiltInSecondaryViewportMaskNV;
634 case glslang::EbvPositionPerViewNV:
635 if (!memberDeclaration) {
636 builder.addExtension(spv::E_SPV_NVX_multiview_per_view_attributes);
637 builder.addCapability(spv::CapabilityPerViewAttributesNV);
639 return spv::BuiltInPositionPerViewNV;
640 case glslang::EbvViewportMaskPerViewNV:
641 if (!memberDeclaration) {
642 builder.addExtension(spv::E_SPV_NVX_multiview_per_view_attributes);
643 builder.addCapability(spv::CapabilityPerViewAttributesNV);
645 return spv::BuiltInViewportMaskPerViewNV;
648 return spv::BuiltInMax;
652 // Translate glslang image layout format to SPIR-V image format.
653 spv::ImageFormat TGlslangToSpvTraverser::TranslateImageFormat(const glslang::TType& type)
655 assert(type.getBasicType() == glslang::EbtSampler);
657 // Check for capabilities
658 switch (type.getQualifier().layoutFormat) {
659 case glslang::ElfRg32f:
660 case glslang::ElfRg16f:
661 case glslang::ElfR11fG11fB10f:
662 case glslang::ElfR16f:
663 case glslang::ElfRgba16:
664 case glslang::ElfRgb10A2:
665 case glslang::ElfRg16:
666 case glslang::ElfRg8:
667 case glslang::ElfR16:
669 case glslang::ElfRgba16Snorm:
670 case glslang::ElfRg16Snorm:
671 case glslang::ElfRg8Snorm:
672 case glslang::ElfR16Snorm:
673 case glslang::ElfR8Snorm:
675 case glslang::ElfRg32i:
676 case glslang::ElfRg16i:
677 case glslang::ElfRg8i:
678 case glslang::ElfR16i:
679 case glslang::ElfR8i:
681 case glslang::ElfRgb10a2ui:
682 case glslang::ElfRg32ui:
683 case glslang::ElfRg16ui:
684 case glslang::ElfRg8ui:
685 case glslang::ElfR16ui:
686 case glslang::ElfR8ui:
687 builder.addCapability(spv::CapabilityStorageImageExtendedFormats);
694 // do the translation
695 switch (type.getQualifier().layoutFormat) {
696 case glslang::ElfNone: return spv::ImageFormatUnknown;
697 case glslang::ElfRgba32f: return spv::ImageFormatRgba32f;
698 case glslang::ElfRgba16f: return spv::ImageFormatRgba16f;
699 case glslang::ElfR32f: return spv::ImageFormatR32f;
700 case glslang::ElfRgba8: return spv::ImageFormatRgba8;
701 case glslang::ElfRgba8Snorm: return spv::ImageFormatRgba8Snorm;
702 case glslang::ElfRg32f: return spv::ImageFormatRg32f;
703 case glslang::ElfRg16f: return spv::ImageFormatRg16f;
704 case glslang::ElfR11fG11fB10f: return spv::ImageFormatR11fG11fB10f;
705 case glslang::ElfR16f: return spv::ImageFormatR16f;
706 case glslang::ElfRgba16: return spv::ImageFormatRgba16;
707 case glslang::ElfRgb10A2: return spv::ImageFormatRgb10A2;
708 case glslang::ElfRg16: return spv::ImageFormatRg16;
709 case glslang::ElfRg8: return spv::ImageFormatRg8;
710 case glslang::ElfR16: return spv::ImageFormatR16;
711 case glslang::ElfR8: return spv::ImageFormatR8;
712 case glslang::ElfRgba16Snorm: return spv::ImageFormatRgba16Snorm;
713 case glslang::ElfRg16Snorm: return spv::ImageFormatRg16Snorm;
714 case glslang::ElfRg8Snorm: return spv::ImageFormatRg8Snorm;
715 case glslang::ElfR16Snorm: return spv::ImageFormatR16Snorm;
716 case glslang::ElfR8Snorm: return spv::ImageFormatR8Snorm;
717 case glslang::ElfRgba32i: return spv::ImageFormatRgba32i;
718 case glslang::ElfRgba16i: return spv::ImageFormatRgba16i;
719 case glslang::ElfRgba8i: return spv::ImageFormatRgba8i;
720 case glslang::ElfR32i: return spv::ImageFormatR32i;
721 case glslang::ElfRg32i: return spv::ImageFormatRg32i;
722 case glslang::ElfRg16i: return spv::ImageFormatRg16i;
723 case glslang::ElfRg8i: return spv::ImageFormatRg8i;
724 case glslang::ElfR16i: return spv::ImageFormatR16i;
725 case glslang::ElfR8i: return spv::ImageFormatR8i;
726 case glslang::ElfRgba32ui: return spv::ImageFormatRgba32ui;
727 case glslang::ElfRgba16ui: return spv::ImageFormatRgba16ui;
728 case glslang::ElfRgba8ui: return spv::ImageFormatRgba8ui;
729 case glslang::ElfR32ui: return spv::ImageFormatR32ui;
730 case glslang::ElfRg32ui: return spv::ImageFormatRg32ui;
731 case glslang::ElfRg16ui: return spv::ImageFormatRg16ui;
732 case glslang::ElfRgb10a2ui: return spv::ImageFormatRgb10a2ui;
733 case glslang::ElfRg8ui: return spv::ImageFormatRg8ui;
734 case glslang::ElfR16ui: return spv::ImageFormatR16ui;
735 case glslang::ElfR8ui: return spv::ImageFormatR8ui;
736 default: return spv::ImageFormatMax;
740 spv::LoopControlMask TGlslangToSpvTraverser::TranslateLoopControl(glslang::TLoopControl loopControl) const
742 switch (loopControl) {
743 case glslang::ELoopControlNone: return spv::LoopControlMaskNone;
744 case glslang::ELoopControlUnroll: return spv::LoopControlUnrollMask;
745 case glslang::ELoopControlDontUnroll: return spv::LoopControlDontUnrollMask;
746 // TODO: DependencyInfinite
747 // TODO: DependencyLength
748 default: return spv::LoopControlMaskNone;
752 // Translate glslang type to SPIR-V storage class.
753 spv::StorageClass TGlslangToSpvTraverser::TranslateStorageClass(const glslang::TType& type)
755 if (type.getQualifier().isPipeInput())
756 return spv::StorageClassInput;
757 else if (type.getQualifier().isPipeOutput())
758 return spv::StorageClassOutput;
759 else if (type.getBasicType() == glslang::EbtAtomicUint)
760 return spv::StorageClassAtomicCounter;
761 else if (type.containsOpaque())
762 return spv::StorageClassUniformConstant;
763 else if (glslangIntermediate->usingStorageBuffer() && type.getQualifier().storage == glslang::EvqBuffer) {
764 builder.addExtension(spv::E_SPV_KHR_storage_buffer_storage_class);
765 return spv::StorageClassStorageBuffer;
766 } else if (type.getQualifier().isUniformOrBuffer()) {
767 if (type.getQualifier().layoutPushConstant)
768 return spv::StorageClassPushConstant;
769 if (type.getBasicType() == glslang::EbtBlock)
770 return spv::StorageClassUniform;
772 return spv::StorageClassUniformConstant;
774 switch (type.getQualifier().storage) {
775 case glslang::EvqShared: return spv::StorageClassWorkgroup; break;
776 case glslang::EvqGlobal: return spv::StorageClassPrivate;
777 case glslang::EvqConstReadOnly: return spv::StorageClassFunction;
778 case glslang::EvqTemporary: return spv::StorageClassFunction;
781 return spv::StorageClassFunction;
786 // Return whether or not the given type is something that should be tied to a
788 bool IsDescriptorResource(const glslang::TType& type)
790 // uniform and buffer blocks are included, unless it is a push_constant
791 if (type.getBasicType() == glslang::EbtBlock)
792 return type.getQualifier().isUniformOrBuffer() && ! type.getQualifier().layoutPushConstant;
795 // basically samplerXXX/subpass/sampler/texture are all included
796 // if they are the global-scope-class, not the function parameter
797 // (or local, if they ever exist) class.
798 if (type.getBasicType() == glslang::EbtSampler)
799 return type.getQualifier().isUniformOrBuffer();
801 // None of the above.
805 void InheritQualifiers(glslang::TQualifier& child, const glslang::TQualifier& parent)
807 if (child.layoutMatrix == glslang::ElmNone)
808 child.layoutMatrix = parent.layoutMatrix;
810 if (parent.invariant)
811 child.invariant = true;
813 child.nopersp = true;
814 #ifdef AMD_EXTENSIONS
815 if (parent.explicitInterp)
816 child.explicitInterp = true;
821 child.centroid = true;
827 child.coherent = true;
829 child.volatil = true;
831 child.restrict = true;
833 child.readonly = true;
834 if (parent.writeonly)
835 child.writeonly = true;
838 bool HasNonLayoutQualifiers(const glslang::TType& type, const glslang::TQualifier& qualifier)
840 // This should list qualifiers that simultaneous satisfy:
841 // - struct members might inherit from a struct declaration
842 // (note that non-block structs don't explicitly inherit,
843 // only implicitly, meaning no decoration involved)
844 // - affect decorations on the struct members
845 // (note smooth does not, and expecting something like volatile
846 // to effect the whole object)
847 // - are not part of the offset/st430/etc or row/column-major layout
848 return qualifier.invariant || (qualifier.hasLocation() && type.getBasicType() == glslang::EbtBlock);
852 // Implement the TGlslangToSpvTraverser class.
855 TGlslangToSpvTraverser::TGlslangToSpvTraverser(const glslang::TIntermediate* glslangIntermediate,
856 spv::SpvBuildLogger* buildLogger, glslang::SpvOptions& options)
857 : TIntermTraverser(true, false, true),
859 shaderEntry(nullptr), currentFunction(nullptr),
860 sequenceDepth(0), logger(buildLogger),
861 builder((glslang::GetKhronosToolId() << 16) | GeneratorVersion, logger),
862 inEntryPoint(false), entryPointTerminated(false), linkageOnly(false),
863 glslangIntermediate(glslangIntermediate)
865 spv::ExecutionModel executionModel = TranslateExecutionModel(glslangIntermediate->getStage());
867 builder.clearAccessChain();
868 builder.setSource(TranslateSourceLanguage(glslangIntermediate->getSource(), glslangIntermediate->getProfile()), glslangIntermediate->getVersion());
869 if (options.generateDebugInfo) {
870 builder.setSourceFile(glslangIntermediate->getSourceFile());
871 builder.setSourceText(glslangIntermediate->getSourceText());
872 builder.setEmitOpLines();
874 stdBuiltins = builder.import("GLSL.std.450");
875 builder.setMemoryModel(spv::AddressingModelLogical, spv::MemoryModelGLSL450);
876 shaderEntry = builder.makeEntryPoint(glslangIntermediate->getEntryPointName().c_str());
877 entryPoint = builder.addEntryPoint(executionModel, shaderEntry, glslangIntermediate->getEntryPointName().c_str());
879 // Add the source extensions
880 const auto& sourceExtensions = glslangIntermediate->getRequestedExtensions();
881 for (auto it = sourceExtensions.begin(); it != sourceExtensions.end(); ++it)
882 builder.addSourceExtension(it->c_str());
884 // Add the top-level modes for this shader.
886 if (glslangIntermediate->getXfbMode()) {
887 builder.addCapability(spv::CapabilityTransformFeedback);
888 builder.addExecutionMode(shaderEntry, spv::ExecutionModeXfb);
892 switch (glslangIntermediate->getStage()) {
894 builder.addCapability(spv::CapabilityShader);
897 case EShLangTessEvaluation:
898 case EShLangTessControl:
899 builder.addCapability(spv::CapabilityTessellation);
901 glslang::TLayoutGeometry primitive;
903 if (glslangIntermediate->getStage() == EShLangTessControl) {
904 builder.addExecutionMode(shaderEntry, spv::ExecutionModeOutputVertices, glslangIntermediate->getVertices());
905 primitive = glslangIntermediate->getOutputPrimitive();
907 primitive = glslangIntermediate->getInputPrimitive();
911 case glslang::ElgTriangles: mode = spv::ExecutionModeTriangles; break;
912 case glslang::ElgQuads: mode = spv::ExecutionModeQuads; break;
913 case glslang::ElgIsolines: mode = spv::ExecutionModeIsolines; break;
914 default: mode = spv::ExecutionModeMax; break;
916 if (mode != spv::ExecutionModeMax)
917 builder.addExecutionMode(shaderEntry, (spv::ExecutionMode)mode);
919 switch (glslangIntermediate->getVertexSpacing()) {
920 case glslang::EvsEqual: mode = spv::ExecutionModeSpacingEqual; break;
921 case glslang::EvsFractionalEven: mode = spv::ExecutionModeSpacingFractionalEven; break;
922 case glslang::EvsFractionalOdd: mode = spv::ExecutionModeSpacingFractionalOdd; break;
923 default: mode = spv::ExecutionModeMax; break;
925 if (mode != spv::ExecutionModeMax)
926 builder.addExecutionMode(shaderEntry, (spv::ExecutionMode)mode);
928 switch (glslangIntermediate->getVertexOrder()) {
929 case glslang::EvoCw: mode = spv::ExecutionModeVertexOrderCw; break;
930 case glslang::EvoCcw: mode = spv::ExecutionModeVertexOrderCcw; break;
931 default: mode = spv::ExecutionModeMax; break;
933 if (mode != spv::ExecutionModeMax)
934 builder.addExecutionMode(shaderEntry, (spv::ExecutionMode)mode);
936 if (glslangIntermediate->getPointMode())
937 builder.addExecutionMode(shaderEntry, spv::ExecutionModePointMode);
940 case EShLangGeometry:
941 builder.addCapability(spv::CapabilityGeometry);
942 switch (glslangIntermediate->getInputPrimitive()) {
943 case glslang::ElgPoints: mode = spv::ExecutionModeInputPoints; break;
944 case glslang::ElgLines: mode = spv::ExecutionModeInputLines; break;
945 case glslang::ElgLinesAdjacency: mode = spv::ExecutionModeInputLinesAdjacency; break;
946 case glslang::ElgTriangles: mode = spv::ExecutionModeTriangles; break;
947 case glslang::ElgTrianglesAdjacency: mode = spv::ExecutionModeInputTrianglesAdjacency; break;
948 default: mode = spv::ExecutionModeMax; break;
950 if (mode != spv::ExecutionModeMax)
951 builder.addExecutionMode(shaderEntry, (spv::ExecutionMode)mode);
953 builder.addExecutionMode(shaderEntry, spv::ExecutionModeInvocations, glslangIntermediate->getInvocations());
955 switch (glslangIntermediate->getOutputPrimitive()) {
956 case glslang::ElgPoints: mode = spv::ExecutionModeOutputPoints; break;
957 case glslang::ElgLineStrip: mode = spv::ExecutionModeOutputLineStrip; break;
958 case glslang::ElgTriangleStrip: mode = spv::ExecutionModeOutputTriangleStrip; break;
959 default: mode = spv::ExecutionModeMax; break;
961 if (mode != spv::ExecutionModeMax)
962 builder.addExecutionMode(shaderEntry, (spv::ExecutionMode)mode);
963 builder.addExecutionMode(shaderEntry, spv::ExecutionModeOutputVertices, glslangIntermediate->getVertices());
966 case EShLangFragment:
967 builder.addCapability(spv::CapabilityShader);
968 if (glslangIntermediate->getPixelCenterInteger())
969 builder.addExecutionMode(shaderEntry, spv::ExecutionModePixelCenterInteger);
971 if (glslangIntermediate->getOriginUpperLeft())
972 builder.addExecutionMode(shaderEntry, spv::ExecutionModeOriginUpperLeft);
974 builder.addExecutionMode(shaderEntry, spv::ExecutionModeOriginLowerLeft);
976 if (glslangIntermediate->getEarlyFragmentTests())
977 builder.addExecutionMode(shaderEntry, spv::ExecutionModeEarlyFragmentTests);
979 switch(glslangIntermediate->getDepth()) {
980 case glslang::EldGreater: mode = spv::ExecutionModeDepthGreater; break;
981 case glslang::EldLess: mode = spv::ExecutionModeDepthLess; break;
982 default: mode = spv::ExecutionModeMax; break;
984 if (mode != spv::ExecutionModeMax)
985 builder.addExecutionMode(shaderEntry, (spv::ExecutionMode)mode);
987 if (glslangIntermediate->getDepth() != glslang::EldUnchanged && glslangIntermediate->isDepthReplacing())
988 builder.addExecutionMode(shaderEntry, spv::ExecutionModeDepthReplacing);
992 builder.addCapability(spv::CapabilityShader);
993 builder.addExecutionMode(shaderEntry, spv::ExecutionModeLocalSize, glslangIntermediate->getLocalSize(0),
994 glslangIntermediate->getLocalSize(1),
995 glslangIntermediate->getLocalSize(2));
1003 // Finish creating SPV, after the traversal is complete.
1004 void TGlslangToSpvTraverser::finishSpv()
1006 if (! entryPointTerminated) {
1007 builder.setBuildPoint(shaderEntry->getLastBlock());
1008 builder.leaveFunction();
1011 // finish off the entry-point SPV instruction by adding the Input/Output <id>
1012 for (auto it = iOSet.cbegin(); it != iOSet.cend(); ++it)
1013 entryPoint->addIdOperand(*it);
1015 builder.eliminateDeadDecorations();
1018 // Write the SPV into 'out'.
1019 void TGlslangToSpvTraverser::dumpSpv(std::vector<unsigned int>& out)
1025 // Implement the traversal functions.
1027 // Return true from interior nodes to have the external traversal
1028 // continue on to children. Return false if children were
1029 // already processed.
1033 // Symbols can turn into
1034 // - uniform/input reads
1036 // - complex lvalue base setups: foo.bar[3].... , where we see foo and start up an access chain
1037 // - something simple that degenerates into the last bullet
1039 void TGlslangToSpvTraverser::visitSymbol(glslang::TIntermSymbol* symbol)
1041 SpecConstantOpModeGuard spec_constant_op_mode_setter(&builder);
1042 if (symbol->getType().getQualifier().isSpecConstant())
1043 spec_constant_op_mode_setter.turnOnSpecConstantOpMode();
1045 // getSymbolId() will set up all the IO decorations on the first call.
1046 // Formal function parameters were mapped during makeFunctions().
1047 spv::Id id = getSymbolId(symbol);
1049 // Include all "static use" and "linkage only" interface variables on the OpEntryPoint instruction
1050 if (builder.isPointer(id)) {
1051 spv::StorageClass sc = builder.getStorageClass(id);
1052 if (sc == spv::StorageClassInput || sc == spv::StorageClassOutput)
1056 // Only process non-linkage-only nodes for generating actual static uses
1057 if (! linkageOnly || symbol->getQualifier().isSpecConstant()) {
1058 // Prepare to generate code for the access
1060 // L-value chains will be computed left to right. We're on the symbol now,
1061 // which is the left-most part of the access chain, so now is "clear" time,
1062 // followed by setting the base.
1063 builder.clearAccessChain();
1065 // For now, we consider all user variables as being in memory, so they are pointers,
1067 // A) R-Value arguments to a function, which are an intermediate object.
1068 // See comments in handleUserFunctionCall().
1069 // B) Specialization constants (normal constants don't even come in as a variable),
1070 // These are also pure R-values.
1071 glslang::TQualifier qualifier = symbol->getQualifier();
1072 if (qualifier.isSpecConstant() || rValueParameters.find(symbol->getId()) != rValueParameters.end())
1073 builder.setAccessChainRValue(id);
1075 builder.setAccessChainLValue(id);
1079 bool TGlslangToSpvTraverser::visitBinary(glslang::TVisit /* visit */, glslang::TIntermBinary* node)
1081 builder.setLine(node->getLoc().line);
1083 SpecConstantOpModeGuard spec_constant_op_mode_setter(&builder);
1084 if (node->getType().getQualifier().isSpecConstant())
1085 spec_constant_op_mode_setter.turnOnSpecConstantOpMode();
1087 // First, handle special cases
1088 switch (node->getOp()) {
1089 case glslang::EOpAssign:
1090 case glslang::EOpAddAssign:
1091 case glslang::EOpSubAssign:
1092 case glslang::EOpMulAssign:
1093 case glslang::EOpVectorTimesMatrixAssign:
1094 case glslang::EOpVectorTimesScalarAssign:
1095 case glslang::EOpMatrixTimesScalarAssign:
1096 case glslang::EOpMatrixTimesMatrixAssign:
1097 case glslang::EOpDivAssign:
1098 case glslang::EOpModAssign:
1099 case glslang::EOpAndAssign:
1100 case glslang::EOpInclusiveOrAssign:
1101 case glslang::EOpExclusiveOrAssign:
1102 case glslang::EOpLeftShiftAssign:
1103 case glslang::EOpRightShiftAssign:
1104 // A bin-op assign "a += b" means the same thing as "a = a + b"
1105 // where a is evaluated before b. For a simple assignment, GLSL
1106 // says to evaluate the left before the right. So, always, left
1107 // node then right node.
1109 // get the left l-value, save it away
1110 builder.clearAccessChain();
1111 node->getLeft()->traverse(this);
1112 spv::Builder::AccessChain lValue = builder.getAccessChain();
1114 // evaluate the right
1115 builder.clearAccessChain();
1116 node->getRight()->traverse(this);
1117 spv::Id rValue = accessChainLoad(node->getRight()->getType());
1119 if (node->getOp() != glslang::EOpAssign) {
1120 // the left is also an r-value
1121 builder.setAccessChain(lValue);
1122 spv::Id leftRValue = accessChainLoad(node->getLeft()->getType());
1125 rValue = createBinaryOperation(node->getOp(), TranslatePrecisionDecoration(node->getOperationPrecision()),
1126 TranslateNoContractionDecoration(node->getType().getQualifier()),
1127 convertGlslangToSpvType(node->getType()), leftRValue, rValue,
1128 node->getType().getBasicType());
1130 // these all need their counterparts in createBinaryOperation()
1131 assert(rValue != spv::NoResult);
1135 builder.setAccessChain(lValue);
1136 multiTypeStore(node->getType(), rValue);
1138 // assignments are expressions having an rValue after they are evaluated...
1139 builder.clearAccessChain();
1140 builder.setAccessChainRValue(rValue);
1143 case glslang::EOpIndexDirect:
1144 case glslang::EOpIndexDirectStruct:
1146 // Get the left part of the access chain.
1147 node->getLeft()->traverse(this);
1149 // Add the next element in the chain
1151 const int glslangIndex = node->getRight()->getAsConstantUnion()->getConstArray()[0].getIConst();
1152 if (! node->getLeft()->getType().isArray() &&
1153 node->getLeft()->getType().isVector() &&
1154 node->getOp() == glslang::EOpIndexDirect) {
1155 // This is essentially a hard-coded vector swizzle of size 1,
1156 // so short circuit the access-chain stuff with a swizzle.
1157 std::vector<unsigned> swizzle;
1158 swizzle.push_back(glslangIndex);
1159 builder.accessChainPushSwizzle(swizzle, convertGlslangToSpvType(node->getLeft()->getType()));
1161 int spvIndex = glslangIndex;
1162 if (node->getLeft()->getBasicType() == glslang::EbtBlock &&
1163 node->getOp() == glslang::EOpIndexDirectStruct)
1165 // This may be, e.g., an anonymous block-member selection, which generally need
1166 // index remapping due to hidden members in anonymous blocks.
1167 std::vector<int>& remapper = memberRemapper[node->getLeft()->getType().getStruct()];
1168 assert(remapper.size() > 0);
1169 spvIndex = remapper[glslangIndex];
1172 // normal case for indexing array or structure or block
1173 builder.accessChainPush(builder.makeIntConstant(spvIndex));
1175 // Add capabilities here for accessing PointSize and clip/cull distance.
1176 // We have deferred generation of associated capabilities until now.
1177 if (node->getLeft()->getType().isStruct() && ! node->getLeft()->getType().isArray())
1178 declareUseOfStructMember(*(node->getLeft()->getType().getStruct()), glslangIndex);
1182 case glslang::EOpIndexIndirect:
1184 // Structure or array or vector indirection.
1185 // Will use native SPIR-V access-chain for struct and array indirection;
1186 // matrices are arrays of vectors, so will also work for a matrix.
1187 // Will use the access chain's 'component' for variable index into a vector.
1189 // This adapter is building access chains left to right.
1190 // Set up the access chain to the left.
1191 node->getLeft()->traverse(this);
1193 // save it so that computing the right side doesn't trash it
1194 spv::Builder::AccessChain partial = builder.getAccessChain();
1196 // compute the next index in the chain
1197 builder.clearAccessChain();
1198 node->getRight()->traverse(this);
1199 spv::Id index = accessChainLoad(node->getRight()->getType());
1201 // restore the saved access chain
1202 builder.setAccessChain(partial);
1204 if (! node->getLeft()->getType().isArray() && node->getLeft()->getType().isVector())
1205 builder.accessChainPushComponent(index, convertGlslangToSpvType(node->getLeft()->getType()));
1207 builder.accessChainPush(index);
1210 case glslang::EOpVectorSwizzle:
1212 node->getLeft()->traverse(this);
1213 std::vector<unsigned> swizzle;
1214 convertSwizzle(*node->getRight()->getAsAggregate(), swizzle);
1215 builder.accessChainPushSwizzle(swizzle, convertGlslangToSpvType(node->getLeft()->getType()));
1218 case glslang::EOpMatrixSwizzle:
1219 logger->missingFunctionality("matrix swizzle");
1221 case glslang::EOpLogicalOr:
1222 case glslang::EOpLogicalAnd:
1225 // These may require short circuiting, but can sometimes be done as straight
1226 // binary operations. The right operand must be short circuited if it has
1227 // side effects, and should probably be if it is complex.
1228 if (isTrivial(node->getRight()->getAsTyped()))
1229 break; // handle below as a normal binary operation
1230 // otherwise, we need to do dynamic short circuiting on the right operand
1231 spv::Id result = createShortCircuit(node->getOp(), *node->getLeft()->getAsTyped(), *node->getRight()->getAsTyped());
1232 builder.clearAccessChain();
1233 builder.setAccessChainRValue(result);
1240 // Assume generic binary op...
1242 // get right operand
1243 builder.clearAccessChain();
1244 node->getLeft()->traverse(this);
1245 spv::Id left = accessChainLoad(node->getLeft()->getType());
1248 builder.clearAccessChain();
1249 node->getRight()->traverse(this);
1250 spv::Id right = accessChainLoad(node->getRight()->getType());
1253 spv::Id result = createBinaryOperation(node->getOp(), TranslatePrecisionDecoration(node->getOperationPrecision()),
1254 TranslateNoContractionDecoration(node->getType().getQualifier()),
1255 convertGlslangToSpvType(node->getType()), left, right,
1256 node->getLeft()->getType().getBasicType());
1258 builder.clearAccessChain();
1260 logger->missingFunctionality("unknown glslang binary operation");
1261 return true; // pick up a child as the place-holder result
1263 builder.setAccessChainRValue(result);
1268 bool TGlslangToSpvTraverser::visitUnary(glslang::TVisit /* visit */, glslang::TIntermUnary* node)
1270 builder.setLine(node->getLoc().line);
1272 SpecConstantOpModeGuard spec_constant_op_mode_setter(&builder);
1273 if (node->getType().getQualifier().isSpecConstant())
1274 spec_constant_op_mode_setter.turnOnSpecConstantOpMode();
1276 spv::Id result = spv::NoResult;
1278 // try texturing first
1279 result = createImageTextureFunctionCall(node);
1280 if (result != spv::NoResult) {
1281 builder.clearAccessChain();
1282 builder.setAccessChainRValue(result);
1284 return false; // done with this node
1289 if (node->getOp() == glslang::EOpArrayLength) {
1290 // Quite special; won't want to evaluate the operand.
1292 // Normal .length() would have been constant folded by the front-end.
1293 // So, this has to be block.lastMember.length().
1294 // SPV wants "block" and member number as the operands, go get them.
1295 assert(node->getOperand()->getType().isRuntimeSizedArray());
1296 glslang::TIntermTyped* block = node->getOperand()->getAsBinaryNode()->getLeft();
1297 block->traverse(this);
1298 unsigned int member = node->getOperand()->getAsBinaryNode()->getRight()->getAsConstantUnion()->getConstArray()[0].getUConst();
1299 spv::Id length = builder.createArrayLength(builder.accessChainGetLValue(), member);
1301 builder.clearAccessChain();
1302 builder.setAccessChainRValue(length);
1307 // Start by evaluating the operand
1309 // Does it need a swizzle inversion? If so, evaluation is inverted;
1310 // operate first on the swizzle base, then apply the swizzle.
1311 spv::Id invertedType = spv::NoType;
1312 auto resultType = [&invertedType, &node, this](){ return invertedType != spv::NoType ? invertedType : convertGlslangToSpvType(node->getType()); };
1313 if (node->getOp() == glslang::EOpInterpolateAtCentroid)
1314 invertedType = getInvertedSwizzleType(*node->getOperand());
1316 builder.clearAccessChain();
1317 if (invertedType != spv::NoType)
1318 node->getOperand()->getAsBinaryNode()->getLeft()->traverse(this);
1320 node->getOperand()->traverse(this);
1322 spv::Id operand = spv::NoResult;
1324 if (node->getOp() == glslang::EOpAtomicCounterIncrement ||
1325 node->getOp() == glslang::EOpAtomicCounterDecrement ||
1326 node->getOp() == glslang::EOpAtomicCounter ||
1327 node->getOp() == glslang::EOpInterpolateAtCentroid)
1328 operand = builder.accessChainGetLValue(); // Special case l-value operands
1330 operand = accessChainLoad(node->getOperand()->getType());
1332 spv::Decoration precision = TranslatePrecisionDecoration(node->getOperationPrecision());
1333 spv::Decoration noContraction = TranslateNoContractionDecoration(node->getType().getQualifier());
1335 // it could be a conversion
1337 result = createConversion(node->getOp(), precision, noContraction, resultType(), operand, node->getOperand()->getBasicType());
1339 // if not, then possibly an operation
1341 result = createUnaryOperation(node->getOp(), precision, noContraction, resultType(), operand, node->getOperand()->getBasicType());
1345 result = createInvertedSwizzle(precision, *node->getOperand(), result);
1347 builder.clearAccessChain();
1348 builder.setAccessChainRValue(result);
1350 return false; // done with this node
1353 // it must be a special case, check...
1354 switch (node->getOp()) {
1355 case glslang::EOpPostIncrement:
1356 case glslang::EOpPostDecrement:
1357 case glslang::EOpPreIncrement:
1358 case glslang::EOpPreDecrement:
1360 // we need the integer value "1" or the floating point "1.0" to add/subtract
1362 if (node->getBasicType() == glslang::EbtFloat)
1363 one = builder.makeFloatConstant(1.0F);
1364 else if (node->getBasicType() == glslang::EbtDouble)
1365 one = builder.makeDoubleConstant(1.0);
1366 #ifdef AMD_EXTENSIONS
1367 else if (node->getBasicType() == glslang::EbtFloat16)
1368 one = builder.makeFloat16Constant(1.0F);
1370 else if (node->getBasicType() == glslang::EbtInt64 || node->getBasicType() == glslang::EbtUint64)
1371 one = builder.makeInt64Constant(1);
1373 one = builder.makeIntConstant(1);
1374 glslang::TOperator op;
1375 if (node->getOp() == glslang::EOpPreIncrement ||
1376 node->getOp() == glslang::EOpPostIncrement)
1377 op = glslang::EOpAdd;
1379 op = glslang::EOpSub;
1381 spv::Id result = createBinaryOperation(op, precision,
1382 TranslateNoContractionDecoration(node->getType().getQualifier()),
1383 convertGlslangToSpvType(node->getType()), operand, one,
1384 node->getType().getBasicType());
1385 assert(result != spv::NoResult);
1387 // The result of operation is always stored, but conditionally the
1388 // consumed result. The consumed result is always an r-value.
1389 builder.accessChainStore(result);
1390 builder.clearAccessChain();
1391 if (node->getOp() == glslang::EOpPreIncrement ||
1392 node->getOp() == glslang::EOpPreDecrement)
1393 builder.setAccessChainRValue(result);
1395 builder.setAccessChainRValue(operand);
1400 case glslang::EOpEmitStreamVertex:
1401 builder.createNoResultOp(spv::OpEmitStreamVertex, operand);
1403 case glslang::EOpEndStreamPrimitive:
1404 builder.createNoResultOp(spv::OpEndStreamPrimitive, operand);
1408 logger->missingFunctionality("unknown glslang unary");
1409 return true; // pick up operand as placeholder result
1413 bool TGlslangToSpvTraverser::visitAggregate(glslang::TVisit visit, glslang::TIntermAggregate* node)
1415 SpecConstantOpModeGuard spec_constant_op_mode_setter(&builder);
1416 if (node->getType().getQualifier().isSpecConstant())
1417 spec_constant_op_mode_setter.turnOnSpecConstantOpMode();
1419 spv::Id result = spv::NoResult;
1420 spv::Id invertedType = spv::NoType; // to use to override the natural type of the node
1421 auto resultType = [&invertedType, &node, this](){ return invertedType != spv::NoType ? invertedType : convertGlslangToSpvType(node->getType()); };
1424 result = createImageTextureFunctionCall(node);
1425 if (result != spv::NoResult) {
1426 builder.clearAccessChain();
1427 builder.setAccessChainRValue(result);
1430 } else if (node->getOp() == glslang::EOpImageStore) {
1431 // "imageStore" is a special case, which has no result
1435 glslang::TOperator binOp = glslang::EOpNull;
1436 bool reduceComparison = true;
1437 bool isMatrix = false;
1438 bool noReturnValue = false;
1439 bool atomic = false;
1441 assert(node->getOp());
1443 spv::Decoration precision = TranslatePrecisionDecoration(node->getOperationPrecision());
1445 switch (node->getOp()) {
1446 case glslang::EOpSequence:
1453 if (sequenceDepth == 1) {
1454 // If this is the parent node of all the functions, we want to see them
1455 // early, so all call points have actual SPIR-V functions to reference.
1456 // In all cases, still let the traverser visit the children for us.
1457 makeFunctions(node->getAsAggregate()->getSequence());
1459 // Also, we want all globals initializers to go into the beginning of the entry point, before
1460 // anything else gets there, so visit out of order, doing them all now.
1461 makeGlobalInitializers(node->getAsAggregate()->getSequence());
1463 // Initializers are done, don't want to visit again, but functions and link objects need to be processed,
1464 // so do them manually.
1465 visitFunctions(node->getAsAggregate()->getSequence());
1472 case glslang::EOpLinkerObjects:
1474 if (visit == glslang::EvPreVisit)
1477 linkageOnly = false;
1481 case glslang::EOpComma:
1483 // processing from left to right naturally leaves the right-most
1484 // lying around in the access chain
1485 glslang::TIntermSequence& glslangOperands = node->getSequence();
1486 for (int i = 0; i < (int)glslangOperands.size(); ++i)
1487 glslangOperands[i]->traverse(this);
1491 case glslang::EOpFunction:
1492 if (visit == glslang::EvPreVisit) {
1493 if (isShaderEntryPoint(node)) {
1494 inEntryPoint = true;
1495 builder.setBuildPoint(shaderEntry->getLastBlock());
1496 currentFunction = shaderEntry;
1498 handleFunctionEntry(node);
1502 entryPointTerminated = true;
1503 builder.leaveFunction();
1504 inEntryPoint = false;
1508 case glslang::EOpParameters:
1509 // Parameters will have been consumed by EOpFunction processing, but not
1510 // the body, so we still visited the function node's children, making this
1513 case glslang::EOpFunctionCall:
1515 builder.setLine(node->getLoc().line);
1516 if (node->isUserDefined())
1517 result = handleUserFunctionCall(node);
1518 // assert(result); // this can happen for bad shaders because the call graph completeness checking is not yet done
1520 builder.clearAccessChain();
1521 builder.setAccessChainRValue(result);
1523 logger->missingFunctionality("missing user function; linker needs to catch that");
1527 case glslang::EOpConstructMat2x2:
1528 case glslang::EOpConstructMat2x3:
1529 case glslang::EOpConstructMat2x4:
1530 case glslang::EOpConstructMat3x2:
1531 case glslang::EOpConstructMat3x3:
1532 case glslang::EOpConstructMat3x4:
1533 case glslang::EOpConstructMat4x2:
1534 case glslang::EOpConstructMat4x3:
1535 case glslang::EOpConstructMat4x4:
1536 case glslang::EOpConstructDMat2x2:
1537 case glslang::EOpConstructDMat2x3:
1538 case glslang::EOpConstructDMat2x4:
1539 case glslang::EOpConstructDMat3x2:
1540 case glslang::EOpConstructDMat3x3:
1541 case glslang::EOpConstructDMat3x4:
1542 case glslang::EOpConstructDMat4x2:
1543 case glslang::EOpConstructDMat4x3:
1544 case glslang::EOpConstructDMat4x4:
1545 case glslang::EOpConstructIMat2x2:
1546 case glslang::EOpConstructIMat2x3:
1547 case glslang::EOpConstructIMat2x4:
1548 case glslang::EOpConstructIMat3x2:
1549 case glslang::EOpConstructIMat3x3:
1550 case glslang::EOpConstructIMat3x4:
1551 case glslang::EOpConstructIMat4x2:
1552 case glslang::EOpConstructIMat4x3:
1553 case glslang::EOpConstructIMat4x4:
1554 case glslang::EOpConstructUMat2x2:
1555 case glslang::EOpConstructUMat2x3:
1556 case glslang::EOpConstructUMat2x4:
1557 case glslang::EOpConstructUMat3x2:
1558 case glslang::EOpConstructUMat3x3:
1559 case glslang::EOpConstructUMat3x4:
1560 case glslang::EOpConstructUMat4x2:
1561 case glslang::EOpConstructUMat4x3:
1562 case glslang::EOpConstructUMat4x4:
1563 case glslang::EOpConstructBMat2x2:
1564 case glslang::EOpConstructBMat2x3:
1565 case glslang::EOpConstructBMat2x4:
1566 case glslang::EOpConstructBMat3x2:
1567 case glslang::EOpConstructBMat3x3:
1568 case glslang::EOpConstructBMat3x4:
1569 case glslang::EOpConstructBMat4x2:
1570 case glslang::EOpConstructBMat4x3:
1571 case glslang::EOpConstructBMat4x4:
1572 #ifdef AMD_EXTENSIONS
1573 case glslang::EOpConstructF16Mat2x2:
1574 case glslang::EOpConstructF16Mat2x3:
1575 case glslang::EOpConstructF16Mat2x4:
1576 case glslang::EOpConstructF16Mat3x2:
1577 case glslang::EOpConstructF16Mat3x3:
1578 case glslang::EOpConstructF16Mat3x4:
1579 case glslang::EOpConstructF16Mat4x2:
1580 case glslang::EOpConstructF16Mat4x3:
1581 case glslang::EOpConstructF16Mat4x4:
1585 case glslang::EOpConstructFloat:
1586 case glslang::EOpConstructVec2:
1587 case glslang::EOpConstructVec3:
1588 case glslang::EOpConstructVec4:
1589 case glslang::EOpConstructDouble:
1590 case glslang::EOpConstructDVec2:
1591 case glslang::EOpConstructDVec3:
1592 case glslang::EOpConstructDVec4:
1593 #ifdef AMD_EXTENSIONS
1594 case glslang::EOpConstructFloat16:
1595 case glslang::EOpConstructF16Vec2:
1596 case glslang::EOpConstructF16Vec3:
1597 case glslang::EOpConstructF16Vec4:
1599 case glslang::EOpConstructBool:
1600 case glslang::EOpConstructBVec2:
1601 case glslang::EOpConstructBVec3:
1602 case glslang::EOpConstructBVec4:
1603 case glslang::EOpConstructInt:
1604 case glslang::EOpConstructIVec2:
1605 case glslang::EOpConstructIVec3:
1606 case glslang::EOpConstructIVec4:
1607 case glslang::EOpConstructUint:
1608 case glslang::EOpConstructUVec2:
1609 case glslang::EOpConstructUVec3:
1610 case glslang::EOpConstructUVec4:
1611 case glslang::EOpConstructInt64:
1612 case glslang::EOpConstructI64Vec2:
1613 case glslang::EOpConstructI64Vec3:
1614 case glslang::EOpConstructI64Vec4:
1615 case glslang::EOpConstructUint64:
1616 case glslang::EOpConstructU64Vec2:
1617 case glslang::EOpConstructU64Vec3:
1618 case glslang::EOpConstructU64Vec4:
1619 case glslang::EOpConstructStruct:
1620 case glslang::EOpConstructTextureSampler:
1622 builder.setLine(node->getLoc().line);
1623 std::vector<spv::Id> arguments;
1624 translateArguments(*node, arguments);
1625 spv::Id constructed;
1626 if (node->getOp() == glslang::EOpConstructTextureSampler)
1627 constructed = builder.createOp(spv::OpSampledImage, resultType(), arguments);
1628 else if (node->getOp() == glslang::EOpConstructStruct || node->getType().isArray()) {
1629 std::vector<spv::Id> constituents;
1630 for (int c = 0; c < (int)arguments.size(); ++c)
1631 constituents.push_back(arguments[c]);
1632 constructed = builder.createCompositeConstruct(resultType(), constituents);
1633 } else if (isMatrix)
1634 constructed = builder.createMatrixConstructor(precision, arguments, resultType());
1636 constructed = builder.createConstructor(precision, arguments, resultType());
1638 builder.clearAccessChain();
1639 builder.setAccessChainRValue(constructed);
1644 // These six are component-wise compares with component-wise results.
1645 // Forward on to createBinaryOperation(), requesting a vector result.
1646 case glslang::EOpLessThan:
1647 case glslang::EOpGreaterThan:
1648 case glslang::EOpLessThanEqual:
1649 case glslang::EOpGreaterThanEqual:
1650 case glslang::EOpVectorEqual:
1651 case glslang::EOpVectorNotEqual:
1653 // Map the operation to a binary
1654 binOp = node->getOp();
1655 reduceComparison = false;
1656 switch (node->getOp()) {
1657 case glslang::EOpVectorEqual: binOp = glslang::EOpVectorEqual; break;
1658 case glslang::EOpVectorNotEqual: binOp = glslang::EOpVectorNotEqual; break;
1659 default: binOp = node->getOp(); break;
1664 case glslang::EOpMul:
1665 // component-wise matrix multiply
1666 binOp = glslang::EOpMul;
1668 case glslang::EOpOuterProduct:
1669 // two vectors multiplied to make a matrix
1670 binOp = glslang::EOpOuterProduct;
1672 case glslang::EOpDot:
1674 // for scalar dot product, use multiply
1675 glslang::TIntermSequence& glslangOperands = node->getSequence();
1676 if (glslangOperands[0]->getAsTyped()->getVectorSize() == 1)
1677 binOp = glslang::EOpMul;
1680 case glslang::EOpMod:
1681 // when an aggregate, this is the floating-point mod built-in function,
1682 // which can be emitted by the one in createBinaryOperation()
1683 binOp = glslang::EOpMod;
1685 case glslang::EOpEmitVertex:
1686 case glslang::EOpEndPrimitive:
1687 case glslang::EOpBarrier:
1688 case glslang::EOpMemoryBarrier:
1689 case glslang::EOpMemoryBarrierAtomicCounter:
1690 case glslang::EOpMemoryBarrierBuffer:
1691 case glslang::EOpMemoryBarrierImage:
1692 case glslang::EOpMemoryBarrierShared:
1693 case glslang::EOpGroupMemoryBarrier:
1694 case glslang::EOpAllMemoryBarrierWithGroupSync:
1695 case glslang::EOpGroupMemoryBarrierWithGroupSync:
1696 case glslang::EOpWorkgroupMemoryBarrier:
1697 case glslang::EOpWorkgroupMemoryBarrierWithGroupSync:
1698 noReturnValue = true;
1699 // These all have 0 operands and will naturally finish up in the code below for 0 operands
1702 case glslang::EOpAtomicAdd:
1703 case glslang::EOpAtomicMin:
1704 case glslang::EOpAtomicMax:
1705 case glslang::EOpAtomicAnd:
1706 case glslang::EOpAtomicOr:
1707 case glslang::EOpAtomicXor:
1708 case glslang::EOpAtomicExchange:
1709 case glslang::EOpAtomicCompSwap:
1718 // See if it maps to a regular operation.
1720 if (binOp != glslang::EOpNull) {
1721 glslang::TIntermTyped* left = node->getSequence()[0]->getAsTyped();
1722 glslang::TIntermTyped* right = node->getSequence()[1]->getAsTyped();
1723 assert(left && right);
1725 builder.clearAccessChain();
1726 left->traverse(this);
1727 spv::Id leftId = accessChainLoad(left->getType());
1729 builder.clearAccessChain();
1730 right->traverse(this);
1731 spv::Id rightId = accessChainLoad(right->getType());
1733 builder.setLine(node->getLoc().line);
1734 result = createBinaryOperation(binOp, precision, TranslateNoContractionDecoration(node->getType().getQualifier()),
1735 resultType(), leftId, rightId,
1736 left->getType().getBasicType(), reduceComparison);
1738 // code above should only make binOp that exists in createBinaryOperation
1739 assert(result != spv::NoResult);
1740 builder.clearAccessChain();
1741 builder.setAccessChainRValue(result);
1747 // Create the list of operands.
1749 glslang::TIntermSequence& glslangOperands = node->getSequence();
1750 std::vector<spv::Id> operands;
1751 for (int arg = 0; arg < (int)glslangOperands.size(); ++arg) {
1752 // special case l-value operands; there are just a few
1753 bool lvalue = false;
1754 switch (node->getOp()) {
1755 case glslang::EOpFrexp:
1756 case glslang::EOpModf:
1760 case glslang::EOpInterpolateAtSample:
1761 case glslang::EOpInterpolateAtOffset:
1762 #ifdef AMD_EXTENSIONS
1763 case glslang::EOpInterpolateAtVertex:
1768 // Does it need a swizzle inversion? If so, evaluation is inverted;
1769 // operate first on the swizzle base, then apply the swizzle.
1770 if (glslangOperands[0]->getAsOperator() &&
1771 glslangOperands[0]->getAsOperator()->getOp() == glslang::EOpVectorSwizzle)
1772 invertedType = convertGlslangToSpvType(glslangOperands[0]->getAsBinaryNode()->getLeft()->getType());
1775 case glslang::EOpAtomicAdd:
1776 case glslang::EOpAtomicMin:
1777 case glslang::EOpAtomicMax:
1778 case glslang::EOpAtomicAnd:
1779 case glslang::EOpAtomicOr:
1780 case glslang::EOpAtomicXor:
1781 case glslang::EOpAtomicExchange:
1782 case glslang::EOpAtomicCompSwap:
1786 case glslang::EOpAddCarry:
1787 case glslang::EOpSubBorrow:
1791 case glslang::EOpUMulExtended:
1792 case glslang::EOpIMulExtended:
1799 builder.clearAccessChain();
1800 if (invertedType != spv::NoType && arg == 0)
1801 glslangOperands[0]->getAsBinaryNode()->getLeft()->traverse(this);
1803 glslangOperands[arg]->traverse(this);
1805 operands.push_back(builder.accessChainGetLValue());
1807 builder.setLine(node->getLoc().line);
1808 operands.push_back(accessChainLoad(glslangOperands[arg]->getAsTyped()->getType()));
1812 builder.setLine(node->getLoc().line);
1814 // Handle all atomics
1815 result = createAtomicOperation(node->getOp(), precision, resultType(), operands, node->getBasicType());
1817 // Pass through to generic operations.
1818 switch (glslangOperands.size()) {
1820 result = createNoArgOperation(node->getOp(), precision, resultType());
1823 result = createUnaryOperation(
1824 node->getOp(), precision,
1825 TranslateNoContractionDecoration(node->getType().getQualifier()),
1826 resultType(), operands.front(),
1827 glslangOperands[0]->getAsTyped()->getBasicType());
1830 result = createMiscOperation(node->getOp(), precision, resultType(), operands, node->getBasicType());
1834 result = createInvertedSwizzle(precision, *glslangOperands[0]->getAsBinaryNode(), result);
1841 logger->missingFunctionality("unknown glslang aggregate");
1842 return true; // pick up a child as a placeholder operand
1844 builder.clearAccessChain();
1845 builder.setAccessChainRValue(result);
1850 // This path handles both if-then-else and ?:
1851 // The if-then-else has a node type of void, while
1852 // ?: has either a void or a non-void node type
1854 // Leaving the result, when not void:
1855 // GLSL only has r-values as the result of a :?, but
1856 // if we have an l-value, that can be more efficient if it will
1857 // become the base of a complex r-value expression, because the
1858 // next layer copies r-values into memory to use the access-chain mechanism
1859 bool TGlslangToSpvTraverser::visitSelection(glslang::TVisit /* visit */, glslang::TIntermSelection* node)
1861 // See if it simple and safe to generate OpSelect instead of using control flow.
1862 // Crucially, side effects must be avoided, and there are performance trade-offs.
1863 // Return true if good idea (and safe) for OpSelect, false otherwise.
1864 const auto selectPolicy = [&]() -> bool {
1865 if ((!node->getType().isScalar() && !node->getType().isVector()) ||
1866 node->getBasicType() == glslang::EbtVoid)
1869 if (node->getTrueBlock() == nullptr ||
1870 node->getFalseBlock() == nullptr)
1873 assert(node->getType() == node->getTrueBlock() ->getAsTyped()->getType() &&
1874 node->getType() == node->getFalseBlock()->getAsTyped()->getType());
1876 // return true if a single operand to ? : is okay for OpSelect
1877 const auto operandOkay = [](glslang::TIntermTyped* node) {
1878 return node->getAsSymbolNode() || node->getType().getQualifier().isConstant();
1881 return operandOkay(node->getTrueBlock() ->getAsTyped()) &&
1882 operandOkay(node->getFalseBlock()->getAsTyped());
1885 // Emit OpSelect for this selection.
1886 const auto handleAsOpSelect = [&]() {
1887 node->getCondition()->traverse(this);
1888 spv::Id condition = accessChainLoad(node->getCondition()->getType());
1889 node->getTrueBlock()->traverse(this);
1890 spv::Id trueValue = accessChainLoad(node->getTrueBlock()->getAsTyped()->getType());
1891 node->getFalseBlock()->traverse(this);
1892 spv::Id falseValue = accessChainLoad(node->getTrueBlock()->getAsTyped()->getType());
1894 builder.setLine(node->getLoc().line);
1896 // smear condition to vector, if necessary (AST is always scalar)
1897 if (builder.isVector(trueValue))
1898 condition = builder.smearScalar(spv::NoPrecision, condition,
1899 builder.makeVectorType(builder.makeBoolType(),
1900 builder.getNumComponents(trueValue)));
1902 spv::Id select = builder.createTriOp(spv::OpSelect,
1903 convertGlslangToSpvType(node->getType()), condition,
1904 trueValue, falseValue);
1905 builder.clearAccessChain();
1906 builder.setAccessChainRValue(select);
1911 if (selectPolicy()) {
1912 SpecConstantOpModeGuard spec_constant_op_mode_setter(&builder);
1913 if (node->getType().getQualifier().isSpecConstant())
1914 spec_constant_op_mode_setter.turnOnSpecConstantOpMode();
1920 // Instead, emit control flow...
1922 // Don't handle results as temporaries, because there will be two names
1923 // and better to leave SSA to later passes.
1924 spv::Id result = (node->getBasicType() == glslang::EbtVoid)
1926 : builder.createVariable(spv::StorageClassFunction, convertGlslangToSpvType(node->getType()));
1928 // emit the condition before doing anything with selection
1929 node->getCondition()->traverse(this);
1931 // make an "if" based on the value created by the condition
1932 spv::Builder::If ifBuilder(accessChainLoad(node->getCondition()->getType()), builder);
1934 // emit the "then" statement
1935 if (node->getTrueBlock() != nullptr) {
1936 node->getTrueBlock()->traverse(this);
1937 if (result != spv::NoResult)
1938 builder.createStore(accessChainLoad(node->getTrueBlock()->getAsTyped()->getType()), result);
1941 if (node->getFalseBlock() != nullptr) {
1942 ifBuilder.makeBeginElse();
1943 // emit the "else" statement
1944 node->getFalseBlock()->traverse(this);
1945 if (result != spv::NoResult)
1946 builder.createStore(accessChainLoad(node->getFalseBlock()->getAsTyped()->getType()), result);
1949 // finish off the control flow
1950 ifBuilder.makeEndIf();
1952 if (result != spv::NoResult) {
1953 // GLSL only has r-values as the result of a :?, but
1954 // if we have an l-value, that can be more efficient if it will
1955 // become the base of a complex r-value expression, because the
1956 // next layer copies r-values into memory to use the access-chain mechanism
1957 builder.clearAccessChain();
1958 builder.setAccessChainLValue(result);
1964 bool TGlslangToSpvTraverser::visitSwitch(glslang::TVisit /* visit */, glslang::TIntermSwitch* node)
1966 // emit and get the condition before doing anything with switch
1967 node->getCondition()->traverse(this);
1968 spv::Id selector = accessChainLoad(node->getCondition()->getAsTyped()->getType());
1970 // browse the children to sort out code segments
1971 int defaultSegment = -1;
1972 std::vector<TIntermNode*> codeSegments;
1973 glslang::TIntermSequence& sequence = node->getBody()->getSequence();
1974 std::vector<int> caseValues;
1975 std::vector<int> valueIndexToSegment(sequence.size()); // note: probably not all are used, it is an overestimate
1976 for (glslang::TIntermSequence::iterator c = sequence.begin(); c != sequence.end(); ++c) {
1977 TIntermNode* child = *c;
1978 if (child->getAsBranchNode() && child->getAsBranchNode()->getFlowOp() == glslang::EOpDefault)
1979 defaultSegment = (int)codeSegments.size();
1980 else if (child->getAsBranchNode() && child->getAsBranchNode()->getFlowOp() == glslang::EOpCase) {
1981 valueIndexToSegment[caseValues.size()] = (int)codeSegments.size();
1982 caseValues.push_back(child->getAsBranchNode()->getExpression()->getAsConstantUnion()->getConstArray()[0].getIConst());
1984 codeSegments.push_back(child);
1987 // handle the case where the last code segment is missing, due to no code
1988 // statements between the last case and the end of the switch statement
1989 if ((caseValues.size() && (int)codeSegments.size() == valueIndexToSegment[caseValues.size() - 1]) ||
1990 (int)codeSegments.size() == defaultSegment)
1991 codeSegments.push_back(nullptr);
1993 // make the switch statement
1994 std::vector<spv::Block*> segmentBlocks; // returned, as the blocks allocated in the call
1995 builder.makeSwitch(selector, (int)codeSegments.size(), caseValues, valueIndexToSegment, defaultSegment, segmentBlocks);
1997 // emit all the code in the segments
1998 breakForLoop.push(false);
1999 for (unsigned int s = 0; s < codeSegments.size(); ++s) {
2000 builder.nextSwitchSegment(segmentBlocks, s);
2001 if (codeSegments[s])
2002 codeSegments[s]->traverse(this);
2004 builder.addSwitchBreak();
2008 builder.endSwitch(segmentBlocks);
2013 void TGlslangToSpvTraverser::visitConstantUnion(glslang::TIntermConstantUnion* node)
2016 spv::Id constant = createSpvConstantFromConstUnionArray(node->getType(), node->getConstArray(), nextConst, false);
2018 builder.clearAccessChain();
2019 builder.setAccessChainRValue(constant);
2022 bool TGlslangToSpvTraverser::visitLoop(glslang::TVisit /* visit */, glslang::TIntermLoop* node)
2024 auto blocks = builder.makeNewLoop();
2025 builder.createBranch(&blocks.head);
2028 const spv::LoopControlMask control = TranslateLoopControl(node->getLoopControl());
2030 // TODO: dependency length
2032 // Spec requires back edges to target header blocks, and every header block
2033 // must dominate its merge block. Make a header block first to ensure these
2034 // conditions are met. By definition, it will contain OpLoopMerge, followed
2035 // by a block-ending branch. But we don't want to put any other body/test
2036 // instructions in it, since the body/test may have arbitrary instructions,
2037 // including merges of its own.
2038 builder.setLine(node->getLoc().line);
2039 builder.setBuildPoint(&blocks.head);
2040 builder.createLoopMerge(&blocks.merge, &blocks.continue_target, control);
2041 if (node->testFirst() && node->getTest()) {
2042 spv::Block& test = builder.makeNewBlock();
2043 builder.createBranch(&test);
2045 builder.setBuildPoint(&test);
2046 node->getTest()->traverse(this);
2047 spv::Id condition = accessChainLoad(node->getTest()->getType());
2048 builder.createConditionalBranch(condition, &blocks.body, &blocks.merge);
2050 builder.setBuildPoint(&blocks.body);
2051 breakForLoop.push(true);
2052 if (node->getBody())
2053 node->getBody()->traverse(this);
2054 builder.createBranch(&blocks.continue_target);
2057 builder.setBuildPoint(&blocks.continue_target);
2058 if (node->getTerminal())
2059 node->getTerminal()->traverse(this);
2060 builder.createBranch(&blocks.head);
2062 builder.setLine(node->getLoc().line);
2063 builder.createBranch(&blocks.body);
2065 breakForLoop.push(true);
2066 builder.setBuildPoint(&blocks.body);
2067 if (node->getBody())
2068 node->getBody()->traverse(this);
2069 builder.createBranch(&blocks.continue_target);
2072 builder.setBuildPoint(&blocks.continue_target);
2073 if (node->getTerminal())
2074 node->getTerminal()->traverse(this);
2075 if (node->getTest()) {
2076 node->getTest()->traverse(this);
2078 accessChainLoad(node->getTest()->getType());
2079 builder.createConditionalBranch(condition, &blocks.head, &blocks.merge);
2081 // TODO: unless there was a break/return/discard instruction
2082 // somewhere in the body, this is an infinite loop, so we should
2084 builder.createBranch(&blocks.head);
2087 builder.setBuildPoint(&blocks.merge);
2088 builder.closeLoop();
2092 bool TGlslangToSpvTraverser::visitBranch(glslang::TVisit /* visit */, glslang::TIntermBranch* node)
2094 if (node->getExpression())
2095 node->getExpression()->traverse(this);
2097 builder.setLine(node->getLoc().line);
2099 switch (node->getFlowOp()) {
2100 case glslang::EOpKill:
2101 builder.makeDiscard();
2103 case glslang::EOpBreak:
2104 if (breakForLoop.top())
2105 builder.createLoopExit();
2107 builder.addSwitchBreak();
2109 case glslang::EOpContinue:
2110 builder.createLoopContinue();
2112 case glslang::EOpReturn:
2113 if (node->getExpression()) {
2114 const glslang::TType& glslangReturnType = node->getExpression()->getType();
2115 spv::Id returnId = accessChainLoad(glslangReturnType);
2116 if (builder.getTypeId(returnId) != currentFunction->getReturnType()) {
2117 builder.clearAccessChain();
2118 spv::Id copyId = builder.createVariable(spv::StorageClassFunction, currentFunction->getReturnType());
2119 builder.setAccessChainLValue(copyId);
2120 multiTypeStore(glslangReturnType, returnId);
2121 returnId = builder.createLoad(copyId);
2123 builder.makeReturn(false, returnId);
2125 builder.makeReturn(false);
2127 builder.clearAccessChain();
2138 spv::Id TGlslangToSpvTraverser::createSpvVariable(const glslang::TIntermSymbol* node)
2140 // First, steer off constants, which are not SPIR-V variables, but
2141 // can still have a mapping to a SPIR-V Id.
2142 // This includes specialization constants.
2143 if (node->getQualifier().isConstant()) {
2144 return createSpvConstant(*node);
2147 // Now, handle actual variables
2148 spv::StorageClass storageClass = TranslateStorageClass(node->getType());
2149 spv::Id spvType = convertGlslangToSpvType(node->getType());
2151 #ifdef AMD_EXTENSIONS
2152 const bool contains16BitType = node->getType().containsBasicType(glslang::EbtFloat16);
2153 if (contains16BitType) {
2154 if (storageClass == spv::StorageClassInput || storageClass == spv::StorageClassOutput) {
2155 builder.addExtension(spv::E_SPV_KHR_16bit_storage);
2156 builder.addCapability(spv::CapabilityStorageInputOutput16);
2157 } else if (storageClass == spv::StorageClassPushConstant) {
2158 builder.addExtension(spv::E_SPV_KHR_16bit_storage);
2159 builder.addCapability(spv::CapabilityStoragePushConstant16);
2160 } else if (storageClass == spv::StorageClassUniform) {
2161 builder.addExtension(spv::E_SPV_KHR_16bit_storage);
2162 builder.addCapability(spv::CapabilityStorageUniform16);
2163 if (node->getType().getQualifier().storage == glslang::EvqBuffer)
2164 builder.addCapability(spv::CapabilityStorageUniformBufferBlock16);
2169 const char* name = node->getName().c_str();
2170 if (glslang::IsAnonymous(name))
2173 return builder.createVariable(storageClass, spvType, name);
2176 // Return type Id of the sampled type.
2177 spv::Id TGlslangToSpvTraverser::getSampledType(const glslang::TSampler& sampler)
2179 switch (sampler.type) {
2180 case glslang::EbtFloat: return builder.makeFloatType(32);
2181 case glslang::EbtInt: return builder.makeIntType(32);
2182 case glslang::EbtUint: return builder.makeUintType(32);
2185 return builder.makeFloatType(32);
2189 // If node is a swizzle operation, return the type that should be used if
2190 // the swizzle base is first consumed by another operation, before the swizzle
2192 spv::Id TGlslangToSpvTraverser::getInvertedSwizzleType(const glslang::TIntermTyped& node)
2194 if (node.getAsOperator() &&
2195 node.getAsOperator()->getOp() == glslang::EOpVectorSwizzle)
2196 return convertGlslangToSpvType(node.getAsBinaryNode()->getLeft()->getType());
2201 // When inverting a swizzle with a parent op, this function
2202 // will apply the swizzle operation to a completed parent operation.
2203 spv::Id TGlslangToSpvTraverser::createInvertedSwizzle(spv::Decoration precision, const glslang::TIntermTyped& node, spv::Id parentResult)
2205 std::vector<unsigned> swizzle;
2206 convertSwizzle(*node.getAsBinaryNode()->getRight()->getAsAggregate(), swizzle);
2207 return builder.createRvalueSwizzle(precision, convertGlslangToSpvType(node.getType()), parentResult, swizzle);
2210 // Convert a glslang AST swizzle node to a swizzle vector for building SPIR-V.
2211 void TGlslangToSpvTraverser::convertSwizzle(const glslang::TIntermAggregate& node, std::vector<unsigned>& swizzle)
2213 const glslang::TIntermSequence& swizzleSequence = node.getSequence();
2214 for (int i = 0; i < (int)swizzleSequence.size(); ++i)
2215 swizzle.push_back(swizzleSequence[i]->getAsConstantUnion()->getConstArray()[0].getIConst());
2218 // Convert from a glslang type to an SPV type, by calling into a
2219 // recursive version of this function. This establishes the inherited
2220 // layout state rooted from the top-level type.
2221 spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& type)
2223 return convertGlslangToSpvType(type, getExplicitLayout(type), type.getQualifier());
2226 // Do full recursive conversion of an arbitrary glslang type to a SPIR-V Id.
2227 // explicitLayout can be kept the same throughout the hierarchical recursive walk.
2228 // Mutually recursive with convertGlslangStructToSpvType().
2229 spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& type, glslang::TLayoutPacking explicitLayout, const glslang::TQualifier& qualifier)
2231 spv::Id spvType = spv::NoResult;
2233 switch (type.getBasicType()) {
2234 case glslang::EbtVoid:
2235 spvType = builder.makeVoidType();
2236 assert (! type.isArray());
2238 case glslang::EbtFloat:
2239 spvType = builder.makeFloatType(32);
2241 case glslang::EbtDouble:
2242 spvType = builder.makeFloatType(64);
2244 #ifdef AMD_EXTENSIONS
2245 case glslang::EbtFloat16:
2246 builder.addExtension(spv::E_SPV_AMD_gpu_shader_half_float);
2247 spvType = builder.makeFloatType(16);
2250 case glslang::EbtBool:
2251 // "transparent" bool doesn't exist in SPIR-V. The GLSL convention is
2252 // a 32-bit int where non-0 means true.
2253 if (explicitLayout != glslang::ElpNone)
2254 spvType = builder.makeUintType(32);
2256 spvType = builder.makeBoolType();
2258 case glslang::EbtInt:
2259 spvType = builder.makeIntType(32);
2261 case glslang::EbtUint:
2262 spvType = builder.makeUintType(32);
2264 case glslang::EbtInt64:
2265 builder.addCapability(spv::CapabilityInt64);
2266 spvType = builder.makeIntType(64);
2268 case glslang::EbtUint64:
2269 builder.addCapability(spv::CapabilityInt64);
2270 spvType = builder.makeUintType(64);
2272 case glslang::EbtAtomicUint:
2273 builder.addCapability(spv::CapabilityAtomicStorage);
2274 spvType = builder.makeUintType(32);
2276 case glslang::EbtSampler:
2278 const glslang::TSampler& sampler = type.getSampler();
2279 if (sampler.sampler) {
2281 spvType = builder.makeSamplerType();
2283 // an image is present, make its type
2284 spvType = builder.makeImageType(getSampledType(sampler), TranslateDimensionality(sampler), sampler.shadow, sampler.arrayed, sampler.ms,
2285 sampler.image ? 2 : 1, TranslateImageFormat(type));
2286 if (sampler.combined) {
2287 // already has both image and sampler, make the combined type
2288 spvType = builder.makeSampledImageType(spvType);
2293 case glslang::EbtStruct:
2294 case glslang::EbtBlock:
2296 // If we've seen this struct type, return it
2297 const glslang::TTypeList* glslangMembers = type.getStruct();
2299 // Try to share structs for different layouts, but not yet for other
2300 // kinds of qualification (primarily not yet including interpolant qualification).
2301 if (! HasNonLayoutQualifiers(type, qualifier))
2302 spvType = structMap[explicitLayout][qualifier.layoutMatrix][glslangMembers];
2303 if (spvType != spv::NoResult)
2306 // else, we haven't seen it...
2307 if (type.getBasicType() == glslang::EbtBlock)
2308 memberRemapper[glslangMembers].resize(glslangMembers->size());
2309 spvType = convertGlslangStructToSpvType(type, glslangMembers, explicitLayout, qualifier);
2317 if (type.isMatrix())
2318 spvType = builder.makeMatrixType(spvType, type.getMatrixCols(), type.getMatrixRows());
2320 // If this variable has a vector element count greater than 1, create a SPIR-V vector
2321 if (type.getVectorSize() > 1)
2322 spvType = builder.makeVectorType(spvType, type.getVectorSize());
2325 if (type.isArray()) {
2326 int stride = 0; // keep this 0 unless doing an explicit layout; 0 will mean no decoration, no stride
2328 // Do all but the outer dimension
2329 if (type.getArraySizes()->getNumDims() > 1) {
2330 // We need to decorate array strides for types needing explicit layout, except blocks.
2331 if (explicitLayout != glslang::ElpNone && type.getBasicType() != glslang::EbtBlock) {
2332 // Use a dummy glslang type for querying internal strides of
2333 // arrays of arrays, but using just a one-dimensional array.
2334 glslang::TType simpleArrayType(type, 0); // deference type of the array
2335 while (simpleArrayType.getArraySizes().getNumDims() > 1)
2336 simpleArrayType.getArraySizes().dereference();
2338 // Will compute the higher-order strides here, rather than making a whole
2339 // pile of types and doing repetitive recursion on their contents.
2340 stride = getArrayStride(simpleArrayType, explicitLayout, qualifier.layoutMatrix);
2344 for (int dim = type.getArraySizes()->getNumDims() - 1; dim > 0; --dim) {
2345 spvType = builder.makeArrayType(spvType, makeArraySizeId(*type.getArraySizes(), dim), stride);
2347 builder.addDecoration(spvType, spv::DecorationArrayStride, stride);
2348 stride *= type.getArraySizes()->getDimSize(dim);
2351 // single-dimensional array, and don't yet have stride
2353 // We need to decorate array strides for types needing explicit layout, except blocks.
2354 if (explicitLayout != glslang::ElpNone && type.getBasicType() != glslang::EbtBlock)
2355 stride = getArrayStride(type, explicitLayout, qualifier.layoutMatrix);
2358 // Do the outer dimension, which might not be known for a runtime-sized array
2359 if (type.isRuntimeSizedArray()) {
2360 spvType = builder.makeRuntimeArray(spvType);
2362 assert(type.getOuterArraySize() > 0);
2363 spvType = builder.makeArrayType(spvType, makeArraySizeId(*type.getArraySizes(), 0), stride);
2366 builder.addDecoration(spvType, spv::DecorationArrayStride, stride);
2372 // TODO: this functionality should exist at a higher level, in creating the AST
2374 // Identify interface members that don't have their required extension turned on.
2376 bool TGlslangToSpvTraverser::filterMember(const glslang::TType& member)
2378 auto& extensions = glslangIntermediate->getRequestedExtensions();
2380 if (member.getFieldName() == "gl_ViewportMask" &&
2381 extensions.find("GL_NV_viewport_array2") == extensions.end())
2383 if (member.getFieldName() == "gl_SecondaryViewportMaskNV" &&
2384 extensions.find("GL_NV_stereo_view_rendering") == extensions.end())
2386 if (member.getFieldName() == "gl_SecondaryPositionNV" &&
2387 extensions.find("GL_NV_stereo_view_rendering") == extensions.end())
2389 if (member.getFieldName() == "gl_PositionPerViewNV" &&
2390 extensions.find("GL_NVX_multiview_per_view_attributes") == extensions.end())
2392 if (member.getFieldName() == "gl_ViewportMaskPerViewNV" &&
2393 extensions.find("GL_NVX_multiview_per_view_attributes") == extensions.end())
2399 // Do full recursive conversion of a glslang structure (or block) type to a SPIR-V Id.
2400 // explicitLayout can be kept the same throughout the hierarchical recursive walk.
2401 // Mutually recursive with convertGlslangToSpvType().
2402 spv::Id TGlslangToSpvTraverser::convertGlslangStructToSpvType(const glslang::TType& type,
2403 const glslang::TTypeList* glslangMembers,
2404 glslang::TLayoutPacking explicitLayout,
2405 const glslang::TQualifier& qualifier)
2407 // Create a vector of struct types for SPIR-V to consume
2408 std::vector<spv::Id> spvMembers;
2409 int memberDelta = 0; // how much the member's index changes from glslang to SPIR-V, normally 0, except sometimes for blocks
2410 int locationOffset = 0; // for use across struct members, when they are called recursively
2411 for (int i = 0; i < (int)glslangMembers->size(); i++) {
2412 glslang::TType& glslangMember = *(*glslangMembers)[i].type;
2413 if (glslangMember.hiddenMember()) {
2415 if (type.getBasicType() == glslang::EbtBlock)
2416 memberRemapper[glslangMembers][i] = -1;
2418 if (type.getBasicType() == glslang::EbtBlock) {
2419 memberRemapper[glslangMembers][i] = i - memberDelta;
2420 if (filterMember(glslangMember))
2423 // modify just this child's view of the qualifier
2424 glslang::TQualifier memberQualifier = glslangMember.getQualifier();
2425 InheritQualifiers(memberQualifier, qualifier);
2427 // manually inherit location; it's more complex
2428 if (! memberQualifier.hasLocation() && qualifier.hasLocation())
2429 memberQualifier.layoutLocation = qualifier.layoutLocation + locationOffset;
2430 if (qualifier.hasLocation())
2431 locationOffset += glslangIntermediate->computeTypeLocationSize(glslangMember);
2434 spvMembers.push_back(convertGlslangToSpvType(glslangMember, explicitLayout, memberQualifier));
2438 // Make the SPIR-V type
2439 spv::Id spvType = builder.makeStructType(spvMembers, type.getTypeName().c_str());
2440 if (! HasNonLayoutQualifiers(type, qualifier))
2441 structMap[explicitLayout][qualifier.layoutMatrix][glslangMembers] = spvType;
2444 decorateStructType(type, glslangMembers, explicitLayout, qualifier, spvType);
2449 void TGlslangToSpvTraverser::decorateStructType(const glslang::TType& type,
2450 const glslang::TTypeList* glslangMembers,
2451 glslang::TLayoutPacking explicitLayout,
2452 const glslang::TQualifier& qualifier,
2455 // Name and decorate the non-hidden members
2457 int locationOffset = 0; // for use within the members of this struct
2458 for (int i = 0; i < (int)glslangMembers->size(); i++) {
2459 glslang::TType& glslangMember = *(*glslangMembers)[i].type;
2461 if (type.getBasicType() == glslang::EbtBlock) {
2462 member = memberRemapper[glslangMembers][i];
2463 if (filterMember(glslangMember))
2467 // modify just this child's view of the qualifier
2468 glslang::TQualifier memberQualifier = glslangMember.getQualifier();
2469 InheritQualifiers(memberQualifier, qualifier);
2471 // using -1 above to indicate a hidden member
2473 builder.addMemberName(spvType, member, glslangMember.getFieldName().c_str());
2474 addMemberDecoration(spvType, member, TranslateLayoutDecoration(glslangMember, memberQualifier.layoutMatrix));
2475 addMemberDecoration(spvType, member, TranslatePrecisionDecoration(glslangMember));
2476 // Add interpolation and auxiliary storage decorations only to top-level members of Input and Output storage classes
2477 if (type.getQualifier().storage == glslang::EvqVaryingIn ||
2478 type.getQualifier().storage == glslang::EvqVaryingOut) {
2479 if (type.getBasicType() == glslang::EbtBlock ||
2480 glslangIntermediate->getSource() == glslang::EShSourceHlsl) {
2481 addMemberDecoration(spvType, member, TranslateInterpolationDecoration(memberQualifier));
2482 addMemberDecoration(spvType, member, TranslateAuxiliaryStorageDecoration(memberQualifier));
2485 addMemberDecoration(spvType, member, TranslateInvariantDecoration(memberQualifier));
2487 if (qualifier.storage == glslang::EvqBuffer) {
2488 std::vector<spv::Decoration> memory;
2489 TranslateMemoryDecoration(memberQualifier, memory);
2490 for (unsigned int i = 0; i < memory.size(); ++i)
2491 addMemberDecoration(spvType, member, memory[i]);
2494 // Compute location decoration; tricky based on whether inheritance is at play and
2495 // what kind of container we have, etc.
2496 // TODO: This algorithm (and it's cousin above doing almost the same thing) should
2497 // probably move to the linker stage of the front end proper, and just have the
2498 // answer sitting already distributed throughout the individual member locations.
2499 int location = -1; // will only decorate if present or inherited
2500 // Ignore member locations if the container is an array, as that's
2501 // ill-specified and decisions have been made to not allow this anyway.
2502 // The object itself must have a location, and that comes out from decorating the object,
2503 // not the type (this code decorates types).
2504 if (! type.isArray()) {
2505 if (memberQualifier.hasLocation()) { // no inheritance, or override of inheritance
2506 // struct members should not have explicit locations
2507 assert(type.getBasicType() != glslang::EbtStruct);
2508 location = memberQualifier.layoutLocation;
2509 } else if (type.getBasicType() != glslang::EbtBlock) {
2510 // If it is a not a Block, (...) Its members are assigned consecutive locations (...)
2511 // The members, and their nested types, must not themselves have Location decorations.
2512 } else if (qualifier.hasLocation()) // inheritance
2513 location = qualifier.layoutLocation + locationOffset;
2516 builder.addMemberDecoration(spvType, member, spv::DecorationLocation, location);
2518 if (qualifier.hasLocation()) // track for upcoming inheritance
2519 locationOffset += glslangIntermediate->computeTypeLocationSize(glslangMember);
2521 // component, XFB, others
2522 if (glslangMember.getQualifier().hasComponent())
2523 builder.addMemberDecoration(spvType, member, spv::DecorationComponent, glslangMember.getQualifier().layoutComponent);
2524 if (glslangMember.getQualifier().hasXfbOffset())
2525 builder.addMemberDecoration(spvType, member, spv::DecorationOffset, glslangMember.getQualifier().layoutXfbOffset);
2526 else if (explicitLayout != glslang::ElpNone) {
2527 // figure out what to do with offset, which is accumulating
2529 updateMemberOffset(type, glslangMember, offset, nextOffset, explicitLayout, memberQualifier.layoutMatrix);
2531 builder.addMemberDecoration(spvType, member, spv::DecorationOffset, offset);
2532 offset = nextOffset;
2535 if (glslangMember.isMatrix() && explicitLayout != glslang::ElpNone)
2536 builder.addMemberDecoration(spvType, member, spv::DecorationMatrixStride, getMatrixStride(glslangMember, explicitLayout, memberQualifier.layoutMatrix));
2538 // built-in variable decorations
2539 spv::BuiltIn builtIn = TranslateBuiltInDecoration(glslangMember.getQualifier().builtIn, true);
2540 if (builtIn != spv::BuiltInMax)
2541 addMemberDecoration(spvType, member, spv::DecorationBuiltIn, (int)builtIn);
2543 #ifdef NV_EXTENSIONS
2544 if (builtIn == spv::BuiltInLayer) {
2545 // SPV_NV_viewport_array2 extension
2546 if (glslangMember.getQualifier().layoutViewportRelative){
2547 addMemberDecoration(spvType, member, (spv::Decoration)spv::DecorationViewportRelativeNV);
2548 builder.addCapability(spv::CapabilityShaderViewportMaskNV);
2549 builder.addExtension(spv::E_SPV_NV_viewport_array2);
2551 if (glslangMember.getQualifier().layoutSecondaryViewportRelativeOffset != -2048){
2552 addMemberDecoration(spvType, member, (spv::Decoration)spv::DecorationSecondaryViewportRelativeNV, glslangMember.getQualifier().layoutSecondaryViewportRelativeOffset);
2553 builder.addCapability(spv::CapabilityShaderStereoViewNV);
2554 builder.addExtension(spv::E_SPV_NV_stereo_view_rendering);
2557 if (glslangMember.getQualifier().layoutPassthrough) {
2558 addMemberDecoration(spvType, member, (spv::Decoration)spv::DecorationPassthroughNV);
2559 builder.addCapability(spv::CapabilityGeometryShaderPassthroughNV);
2560 builder.addExtension(spv::E_SPV_NV_geometry_shader_passthrough);
2566 // Decorate the structure
2567 addDecoration(spvType, TranslateLayoutDecoration(type, qualifier.layoutMatrix));
2568 addDecoration(spvType, TranslateBlockDecoration(type, glslangIntermediate->usingStorageBuffer()));
2569 if (type.getQualifier().hasStream() && glslangIntermediate->isMultiStream()) {
2570 builder.addCapability(spv::CapabilityGeometryStreams);
2571 builder.addDecoration(spvType, spv::DecorationStream, type.getQualifier().layoutStream);
2573 if (glslangIntermediate->getXfbMode()) {
2574 builder.addCapability(spv::CapabilityTransformFeedback);
2575 if (type.getQualifier().hasXfbStride())
2576 builder.addDecoration(spvType, spv::DecorationXfbStride, type.getQualifier().layoutXfbStride);
2577 if (type.getQualifier().hasXfbBuffer())
2578 builder.addDecoration(spvType, spv::DecorationXfbBuffer, type.getQualifier().layoutXfbBuffer);
2582 // Turn the expression forming the array size into an id.
2583 // This is not quite trivial, because of specialization constants.
2584 // Sometimes, a raw constant is turned into an Id, and sometimes
2585 // a specialization constant expression is.
2586 spv::Id TGlslangToSpvTraverser::makeArraySizeId(const glslang::TArraySizes& arraySizes, int dim)
2588 // First, see if this is sized with a node, meaning a specialization constant:
2589 glslang::TIntermTyped* specNode = arraySizes.getDimNode(dim);
2590 if (specNode != nullptr) {
2591 builder.clearAccessChain();
2592 specNode->traverse(this);
2593 return accessChainLoad(specNode->getAsTyped()->getType());
2596 // Otherwise, need a compile-time (front end) size, get it:
2597 int size = arraySizes.getDimSize(dim);
2599 return builder.makeUintConstant(size);
2602 // Wrap the builder's accessChainLoad to:
2603 // - localize handling of RelaxedPrecision
2604 // - use the SPIR-V inferred type instead of another conversion of the glslang type
2605 // (avoids unnecessary work and possible type punning for structures)
2606 // - do conversion of concrete to abstract type
2607 spv::Id TGlslangToSpvTraverser::accessChainLoad(const glslang::TType& type)
2609 spv::Id nominalTypeId = builder.accessChainGetInferredType();
2610 spv::Id loadedId = builder.accessChainLoad(TranslatePrecisionDecoration(type), nominalTypeId);
2612 // Need to convert to abstract types when necessary
2613 if (type.getBasicType() == glslang::EbtBool) {
2614 if (builder.isScalarType(nominalTypeId)) {
2615 // Conversion for bool
2616 spv::Id boolType = builder.makeBoolType();
2617 if (nominalTypeId != boolType)
2618 loadedId = builder.createBinOp(spv::OpINotEqual, boolType, loadedId, builder.makeUintConstant(0));
2619 } else if (builder.isVectorType(nominalTypeId)) {
2620 // Conversion for bvec
2621 int vecSize = builder.getNumTypeComponents(nominalTypeId);
2622 spv::Id bvecType = builder.makeVectorType(builder.makeBoolType(), vecSize);
2623 if (nominalTypeId != bvecType)
2624 loadedId = builder.createBinOp(spv::OpINotEqual, bvecType, loadedId, makeSmearedConstant(builder.makeUintConstant(0), vecSize));
2631 // Wrap the builder's accessChainStore to:
2632 // - do conversion of concrete to abstract type
2634 // Implicitly uses the existing builder.accessChain as the storage target.
2635 void TGlslangToSpvTraverser::accessChainStore(const glslang::TType& type, spv::Id rvalue)
2637 // Need to convert to abstract types when necessary
2638 if (type.getBasicType() == glslang::EbtBool) {
2639 spv::Id nominalTypeId = builder.accessChainGetInferredType();
2641 if (builder.isScalarType(nominalTypeId)) {
2642 // Conversion for bool
2643 spv::Id boolType = builder.makeBoolType();
2644 if (nominalTypeId != boolType) {
2645 // keep these outside arguments, for determinant order-of-evaluation
2646 spv::Id one = builder.makeUintConstant(1);
2647 spv::Id zero = builder.makeUintConstant(0);
2648 rvalue = builder.createTriOp(spv::OpSelect, nominalTypeId, rvalue, one, zero);
2649 } else if (builder.getTypeId(rvalue) != boolType)
2650 rvalue = builder.createBinOp(spv::OpINotEqual, boolType, rvalue, builder.makeUintConstant(0));
2651 } else if (builder.isVectorType(nominalTypeId)) {
2652 // Conversion for bvec
2653 int vecSize = builder.getNumTypeComponents(nominalTypeId);
2654 spv::Id bvecType = builder.makeVectorType(builder.makeBoolType(), vecSize);
2655 if (nominalTypeId != bvecType) {
2656 // keep these outside arguments, for determinant order-of-evaluation
2657 spv::Id one = makeSmearedConstant(builder.makeUintConstant(1), vecSize);
2658 spv::Id zero = makeSmearedConstant(builder.makeUintConstant(0), vecSize);
2659 rvalue = builder.createTriOp(spv::OpSelect, nominalTypeId, rvalue, one, zero);
2660 } else if (builder.getTypeId(rvalue) != bvecType)
2661 rvalue = builder.createBinOp(spv::OpINotEqual, bvecType, rvalue,
2662 makeSmearedConstant(builder.makeUintConstant(0), vecSize));
2666 builder.accessChainStore(rvalue);
2669 // For storing when types match at the glslang level, but not might match at the
2672 // This especially happens when a single glslang type expands to multiple
2673 // SPIR-V types, like a struct that is used in a member-undecorated way as well
2674 // as in a member-decorated way.
2676 // NOTE: This function can handle any store request; if it's not special it
2677 // simplifies to a simple OpStore.
2679 // Implicitly uses the existing builder.accessChain as the storage target.
2680 void TGlslangToSpvTraverser::multiTypeStore(const glslang::TType& type, spv::Id rValue)
2682 // we only do the complex path here if it's an aggregate
2683 if (! type.isStruct() && ! type.isArray()) {
2684 accessChainStore(type, rValue);
2688 // and, it has to be a case of type aliasing
2689 spv::Id rType = builder.getTypeId(rValue);
2690 spv::Id lValue = builder.accessChainGetLValue();
2691 spv::Id lType = builder.getContainedTypeId(builder.getTypeId(lValue));
2692 if (lType == rType) {
2693 accessChainStore(type, rValue);
2697 // Recursively (as needed) copy an aggregate type to a different aggregate type,
2698 // where the two types were the same type in GLSL. This requires member
2699 // by member copy, recursively.
2701 // If an array, copy element by element.
2702 if (type.isArray()) {
2703 glslang::TType glslangElementType(type, 0);
2704 spv::Id elementRType = builder.getContainedTypeId(rType);
2705 for (int index = 0; index < type.getOuterArraySize(); ++index) {
2706 // get the source member
2707 spv::Id elementRValue = builder.createCompositeExtract(rValue, elementRType, index);
2709 // set up the target storage
2710 builder.clearAccessChain();
2711 builder.setAccessChainLValue(lValue);
2712 builder.accessChainPush(builder.makeIntConstant(index));
2715 multiTypeStore(glslangElementType, elementRValue);
2718 assert(type.isStruct());
2720 // loop over structure members
2721 const glslang::TTypeList& members = *type.getStruct();
2722 for (int m = 0; m < (int)members.size(); ++m) {
2723 const glslang::TType& glslangMemberType = *members[m].type;
2725 // get the source member
2726 spv::Id memberRType = builder.getContainedTypeId(rType, m);
2727 spv::Id memberRValue = builder.createCompositeExtract(rValue, memberRType, m);
2729 // set up the target storage
2730 builder.clearAccessChain();
2731 builder.setAccessChainLValue(lValue);
2732 builder.accessChainPush(builder.makeIntConstant(m));
2735 multiTypeStore(glslangMemberType, memberRValue);
2740 // Decide whether or not this type should be
2741 // decorated with offsets and strides, and if so
2742 // whether std140 or std430 rules should be applied.
2743 glslang::TLayoutPacking TGlslangToSpvTraverser::getExplicitLayout(const glslang::TType& type) const
2745 // has to be a block
2746 if (type.getBasicType() != glslang::EbtBlock)
2747 return glslang::ElpNone;
2749 // has to be a uniform or buffer block
2750 if (type.getQualifier().storage != glslang::EvqUniform &&
2751 type.getQualifier().storage != glslang::EvqBuffer)
2752 return glslang::ElpNone;
2754 // return the layout to use
2755 switch (type.getQualifier().layoutPacking) {
2756 case glslang::ElpStd140:
2757 case glslang::ElpStd430:
2758 return type.getQualifier().layoutPacking;
2760 return glslang::ElpNone;
2764 // Given an array type, returns the integer stride required for that array
2765 int TGlslangToSpvTraverser::getArrayStride(const glslang::TType& arrayType, glslang::TLayoutPacking explicitLayout, glslang::TLayoutMatrix matrixLayout)
2769 glslangIntermediate->getBaseAlignment(arrayType, size, stride, explicitLayout == glslang::ElpStd140, matrixLayout == glslang::ElmRowMajor);
2774 // Given a matrix type, or array (of array) of matrixes type, returns the integer stride required for that matrix
2775 // when used as a member of an interface block
2776 int TGlslangToSpvTraverser::getMatrixStride(const glslang::TType& matrixType, glslang::TLayoutPacking explicitLayout, glslang::TLayoutMatrix matrixLayout)
2778 glslang::TType elementType;
2779 elementType.shallowCopy(matrixType);
2780 elementType.clearArraySizes();
2784 glslangIntermediate->getBaseAlignment(elementType, size, stride, explicitLayout == glslang::ElpStd140, matrixLayout == glslang::ElmRowMajor);
2789 // Given a member type of a struct, realign the current offset for it, and compute
2790 // the next (not yet aligned) offset for the next member, which will get aligned
2791 // on the next call.
2792 // 'currentOffset' should be passed in already initialized, ready to modify, and reflecting
2793 // the migration of data from nextOffset -> currentOffset. It should be -1 on the first call.
2794 // -1 means a non-forced member offset (no decoration needed).
2795 void TGlslangToSpvTraverser::updateMemberOffset(const glslang::TType& /*structType*/, const glslang::TType& memberType, int& currentOffset, int& nextOffset,
2796 glslang::TLayoutPacking explicitLayout, glslang::TLayoutMatrix matrixLayout)
2798 // this will get a positive value when deemed necessary
2801 // override anything in currentOffset with user-set offset
2802 if (memberType.getQualifier().hasOffset())
2803 currentOffset = memberType.getQualifier().layoutOffset;
2805 // It could be that current linker usage in glslang updated all the layoutOffset,
2806 // in which case the following code does not matter. But, that's not quite right
2807 // once cross-compilation unit GLSL validation is done, as the original user
2808 // settings are needed in layoutOffset, and then the following will come into play.
2810 if (explicitLayout == glslang::ElpNone) {
2811 if (! memberType.getQualifier().hasOffset())
2817 // Getting this far means we need explicit offsets
2818 if (currentOffset < 0)
2821 // Now, currentOffset is valid (either 0, or from a previous nextOffset),
2822 // but possibly not yet correctly aligned.
2826 int memberAlignment = glslangIntermediate->getBaseAlignment(memberType, memberSize, dummyStride, explicitLayout == glslang::ElpStd140, matrixLayout == glslang::ElmRowMajor);
2828 // Adjust alignment for HLSL rules
2829 if (glslangIntermediate->usingHlslOFfsets() &&
2830 ! memberType.isArray() && memberType.isVector()) {
2832 int componentAlignment = glslangIntermediate->getBaseAlignmentScalar(memberType, dummySize);
2833 if (componentAlignment <= 4)
2834 memberAlignment = componentAlignment;
2837 // Bump up to member alignment
2838 glslang::RoundToPow2(currentOffset, memberAlignment);
2840 // Bump up to vec4 if there is a bad straddle
2841 if (glslangIntermediate->improperStraddle(memberType, memberSize, currentOffset))
2842 glslang::RoundToPow2(currentOffset, 16);
2844 nextOffset = currentOffset + memberSize;
2847 void TGlslangToSpvTraverser::declareUseOfStructMember(const glslang::TTypeList& members, int glslangMember)
2849 const glslang::TBuiltInVariable glslangBuiltIn = members[glslangMember].type->getQualifier().builtIn;
2850 switch (glslangBuiltIn)
2852 case glslang::EbvClipDistance:
2853 case glslang::EbvCullDistance:
2854 case glslang::EbvPointSize:
2855 #ifdef NV_EXTENSIONS
2856 case glslang::EbvLayer:
2857 case glslang::EbvViewportIndex:
2858 case glslang::EbvViewportMaskNV:
2859 case glslang::EbvSecondaryPositionNV:
2860 case glslang::EbvSecondaryViewportMaskNV:
2861 case glslang::EbvPositionPerViewNV:
2862 case glslang::EbvViewportMaskPerViewNV:
2864 // Generate the associated capability. Delegate to TranslateBuiltInDecoration.
2865 // Alternately, we could just call this for any glslang built-in, since the
2866 // capability already guards against duplicates.
2867 TranslateBuiltInDecoration(glslangBuiltIn, false);
2870 // Capabilities were already generated when the struct was declared.
2875 bool TGlslangToSpvTraverser::isShaderEntryPoint(const glslang::TIntermAggregate* node)
2877 return node->getName().compare(glslangIntermediate->getEntryPointMangledName().c_str()) == 0;
2880 // Make all the functions, skeletally, without actually visiting their bodies.
2881 void TGlslangToSpvTraverser::makeFunctions(const glslang::TIntermSequence& glslFunctions)
2883 for (int f = 0; f < (int)glslFunctions.size(); ++f) {
2884 glslang::TIntermAggregate* glslFunction = glslFunctions[f]->getAsAggregate();
2885 if (! glslFunction || glslFunction->getOp() != glslang::EOpFunction || isShaderEntryPoint(glslFunction))
2888 // We're on a user function. Set up the basic interface for the function now,
2889 // so that it's available to call. Translating the body will happen later.
2891 // Typically (except for a "const in" parameter), an address will be passed to the
2892 // function. What it is an address of varies:
2894 // - "in" parameters not marked as "const" can be written to without modifying the calling
2895 // argument so that write needs to be to a copy, hence the address of a copy works.
2897 // - "const in" parameters can just be the r-value, as no writes need occur.
2899 // - "out" and "inout" arguments can't be done as pointers to the calling argument, because
2900 // GLSL has copy-in/copy-out semantics. They can be handled though with a pointer to a copy.
2902 std::vector<spv::Id> paramTypes;
2903 std::vector<spv::Decoration> paramPrecisions;
2904 glslang::TIntermSequence& parameters = glslFunction->getSequence()[0]->getAsAggregate()->getSequence();
2906 bool implicitThis = (int)parameters.size() > 0 && parameters[0]->getAsSymbolNode()->getName() == glslangIntermediate->implicitThisName;
2908 for (int p = 0; p < (int)parameters.size(); ++p) {
2909 const glslang::TType& paramType = parameters[p]->getAsTyped()->getType();
2910 spv::Id typeId = convertGlslangToSpvType(paramType);
2911 // can we pass by reference?
2912 if (paramType.containsOpaque() || // sampler, etc.
2913 (paramType.getBasicType() == glslang::EbtBlock &&
2914 paramType.getQualifier().storage == glslang::EvqBuffer) || // SSBO
2915 (p == 0 && implicitThis)) // implicit 'this'
2916 typeId = builder.makePointer(TranslateStorageClass(paramType), typeId);
2917 else if (paramType.getQualifier().storage != glslang::EvqConstReadOnly)
2918 typeId = builder.makePointer(spv::StorageClassFunction, typeId);
2920 rValueParameters.insert(parameters[p]->getAsSymbolNode()->getId());
2921 paramPrecisions.push_back(TranslatePrecisionDecoration(paramType));
2922 paramTypes.push_back(typeId);
2925 spv::Block* functionBlock;
2926 spv::Function *function = builder.makeFunctionEntry(TranslatePrecisionDecoration(glslFunction->getType()),
2927 convertGlslangToSpvType(glslFunction->getType()),
2928 glslFunction->getName().c_str(), paramTypes, paramPrecisions, &functionBlock);
2930 function->setImplicitThis();
2932 // Track function to emit/call later
2933 functionMap[glslFunction->getName().c_str()] = function;
2935 // Set the parameter id's
2936 for (int p = 0; p < (int)parameters.size(); ++p) {
2937 symbolValues[parameters[p]->getAsSymbolNode()->getId()] = function->getParamId(p);
2939 builder.addName(function->getParamId(p), parameters[p]->getAsSymbolNode()->getName().c_str());
2944 // Process all the initializers, while skipping the functions and link objects
2945 void TGlslangToSpvTraverser::makeGlobalInitializers(const glslang::TIntermSequence& initializers)
2947 builder.setBuildPoint(shaderEntry->getLastBlock());
2948 for (int i = 0; i < (int)initializers.size(); ++i) {
2949 glslang::TIntermAggregate* initializer = initializers[i]->getAsAggregate();
2950 if (initializer && initializer->getOp() != glslang::EOpFunction && initializer->getOp() != glslang::EOpLinkerObjects) {
2952 // We're on a top-level node that's not a function. Treat as an initializer, whose
2953 // code goes into the beginning of the entry point.
2954 initializer->traverse(this);
2959 // Process all the functions, while skipping initializers.
2960 void TGlslangToSpvTraverser::visitFunctions(const glslang::TIntermSequence& glslFunctions)
2962 for (int f = 0; f < (int)glslFunctions.size(); ++f) {
2963 glslang::TIntermAggregate* node = glslFunctions[f]->getAsAggregate();
2964 if (node && (node->getOp() == glslang::EOpFunction || node->getOp() == glslang::EOpLinkerObjects))
2965 node->traverse(this);
2969 void TGlslangToSpvTraverser::handleFunctionEntry(const glslang::TIntermAggregate* node)
2971 // SPIR-V functions should already be in the functionMap from the prepass
2972 // that called makeFunctions().
2973 currentFunction = functionMap[node->getName().c_str()];
2974 spv::Block* functionBlock = currentFunction->getEntryBlock();
2975 builder.setBuildPoint(functionBlock);
2978 void TGlslangToSpvTraverser::translateArguments(const glslang::TIntermAggregate& node, std::vector<spv::Id>& arguments)
2980 const glslang::TIntermSequence& glslangArguments = node.getSequence();
2982 glslang::TSampler sampler = {};
2983 bool cubeCompare = false;
2984 if (node.isTexture() || node.isImage()) {
2985 sampler = glslangArguments[0]->getAsTyped()->getType().getSampler();
2986 cubeCompare = sampler.dim == glslang::EsdCube && sampler.arrayed && sampler.shadow;
2989 for (int i = 0; i < (int)glslangArguments.size(); ++i) {
2990 builder.clearAccessChain();
2991 glslangArguments[i]->traverse(this);
2993 // Special case l-value operands
2994 bool lvalue = false;
2995 switch (node.getOp()) {
2996 case glslang::EOpImageAtomicAdd:
2997 case glslang::EOpImageAtomicMin:
2998 case glslang::EOpImageAtomicMax:
2999 case glslang::EOpImageAtomicAnd:
3000 case glslang::EOpImageAtomicOr:
3001 case glslang::EOpImageAtomicXor:
3002 case glslang::EOpImageAtomicExchange:
3003 case glslang::EOpImageAtomicCompSwap:
3007 case glslang::EOpSparseImageLoad:
3008 if ((sampler.ms && i == 3) || (! sampler.ms && i == 2))
3011 case glslang::EOpSparseTexture:
3012 if ((cubeCompare && i == 3) || (! cubeCompare && i == 2))
3015 case glslang::EOpSparseTextureClamp:
3016 if ((cubeCompare && i == 4) || (! cubeCompare && i == 3))
3019 case glslang::EOpSparseTextureLod:
3020 case glslang::EOpSparseTextureOffset:
3024 case glslang::EOpSparseTextureFetch:
3025 if ((sampler.dim != glslang::EsdRect && i == 3) || (sampler.dim == glslang::EsdRect && i == 2))
3028 case glslang::EOpSparseTextureFetchOffset:
3029 if ((sampler.dim != glslang::EsdRect && i == 4) || (sampler.dim == glslang::EsdRect && i == 3))
3032 case glslang::EOpSparseTextureLodOffset:
3033 case glslang::EOpSparseTextureGrad:
3034 case glslang::EOpSparseTextureOffsetClamp:
3038 case glslang::EOpSparseTextureGradOffset:
3039 case glslang::EOpSparseTextureGradClamp:
3043 case glslang::EOpSparseTextureGradOffsetClamp:
3047 case glslang::EOpSparseTextureGather:
3048 if ((sampler.shadow && i == 3) || (! sampler.shadow && i == 2))
3051 case glslang::EOpSparseTextureGatherOffset:
3052 case glslang::EOpSparseTextureGatherOffsets:
3053 if ((sampler.shadow && i == 4) || (! sampler.shadow && i == 3))
3056 #ifdef AMD_EXTENSIONS
3057 case glslang::EOpSparseTextureGatherLod:
3061 case glslang::EOpSparseTextureGatherLodOffset:
3062 case glslang::EOpSparseTextureGatherLodOffsets:
3072 arguments.push_back(builder.accessChainGetLValue());
3074 arguments.push_back(accessChainLoad(glslangArguments[i]->getAsTyped()->getType()));
3078 void TGlslangToSpvTraverser::translateArguments(glslang::TIntermUnary& node, std::vector<spv::Id>& arguments)
3080 builder.clearAccessChain();
3081 node.getOperand()->traverse(this);
3082 arguments.push_back(accessChainLoad(node.getOperand()->getType()));
3085 spv::Id TGlslangToSpvTraverser::createImageTextureFunctionCall(glslang::TIntermOperator* node)
3087 if (! node->isImage() && ! node->isTexture())
3088 return spv::NoResult;
3090 builder.setLine(node->getLoc().line);
3092 auto resultType = [&node,this]{ return convertGlslangToSpvType(node->getType()); };
3094 // Process a GLSL texturing op (will be SPV image)
3095 const glslang::TSampler sampler = node->getAsAggregate() ? node->getAsAggregate()->getSequence()[0]->getAsTyped()->getType().getSampler()
3096 : node->getAsUnaryNode()->getOperand()->getAsTyped()->getType().getSampler();
3097 std::vector<spv::Id> arguments;
3098 if (node->getAsAggregate())
3099 translateArguments(*node->getAsAggregate(), arguments);
3101 translateArguments(*node->getAsUnaryNode(), arguments);
3102 spv::Decoration precision = TranslatePrecisionDecoration(node->getOperationPrecision());
3104 spv::Builder::TextureParameters params = { };
3105 params.sampler = arguments[0];
3107 glslang::TCrackedTextureOp cracked;
3108 node->crackTexture(sampler, cracked);
3110 const bool isUnsignedResult =
3111 node->getType().getBasicType() == glslang::EbtUint64 ||
3112 node->getType().getBasicType() == glslang::EbtUint;
3114 // Check for queries
3115 if (cracked.query) {
3116 // OpImageQueryLod works on a sampled image, for other queries the image has to be extracted first
3117 if (node->getOp() != glslang::EOpTextureQueryLod && builder.isSampledImage(params.sampler))
3118 params.sampler = builder.createUnaryOp(spv::OpImage, builder.getImageType(params.sampler), params.sampler);
3120 switch (node->getOp()) {
3121 case glslang::EOpImageQuerySize:
3122 case glslang::EOpTextureQuerySize:
3123 if (arguments.size() > 1) {
3124 params.lod = arguments[1];
3125 return builder.createTextureQueryCall(spv::OpImageQuerySizeLod, params, isUnsignedResult);
3127 return builder.createTextureQueryCall(spv::OpImageQuerySize, params, isUnsignedResult);
3128 case glslang::EOpImageQuerySamples:
3129 case glslang::EOpTextureQuerySamples:
3130 return builder.createTextureQueryCall(spv::OpImageQuerySamples, params, isUnsignedResult);
3131 case glslang::EOpTextureQueryLod:
3132 params.coords = arguments[1];
3133 return builder.createTextureQueryCall(spv::OpImageQueryLod, params, isUnsignedResult);
3134 case glslang::EOpTextureQueryLevels:
3135 return builder.createTextureQueryCall(spv::OpImageQueryLevels, params, isUnsignedResult);
3136 case glslang::EOpSparseTexelsResident:
3137 return builder.createUnaryOp(spv::OpImageSparseTexelsResident, builder.makeBoolType(), arguments[0]);
3144 // Check for image functions other than queries
3145 if (node->isImage()) {
3146 std::vector<spv::Id> operands;
3147 auto opIt = arguments.begin();
3148 operands.push_back(*(opIt++));
3150 // Handle subpass operations
3151 // TODO: GLSL should change to have the "MS" only on the type rather than the
3152 // built-in function.
3153 if (cracked.subpass) {
3154 // add on the (0,0) coordinate
3155 spv::Id zero = builder.makeIntConstant(0);
3156 std::vector<spv::Id> comps;
3157 comps.push_back(zero);
3158 comps.push_back(zero);
3159 operands.push_back(builder.makeCompositeConstant(builder.makeVectorType(builder.makeIntType(32), 2), comps));
3161 operands.push_back(spv::ImageOperandsSampleMask);
3162 operands.push_back(*(opIt++));
3164 return builder.createOp(spv::OpImageRead, resultType(), operands);
3167 operands.push_back(*(opIt++));
3168 if (node->getOp() == glslang::EOpImageLoad) {
3170 operands.push_back(spv::ImageOperandsSampleMask);
3171 operands.push_back(*opIt);
3173 if (builder.getImageTypeFormat(builder.getImageType(operands.front())) == spv::ImageFormatUnknown)
3174 builder.addCapability(spv::CapabilityStorageImageReadWithoutFormat);
3175 return builder.createOp(spv::OpImageRead, resultType(), operands);
3176 } else if (node->getOp() == glslang::EOpImageStore) {
3178 operands.push_back(*(opIt + 1));
3179 operands.push_back(spv::ImageOperandsSampleMask);
3180 operands.push_back(*opIt);
3182 operands.push_back(*opIt);
3183 builder.createNoResultOp(spv::OpImageWrite, operands);
3184 if (builder.getImageTypeFormat(builder.getImageType(operands.front())) == spv::ImageFormatUnknown)
3185 builder.addCapability(spv::CapabilityStorageImageWriteWithoutFormat);
3186 return spv::NoResult;
3187 } else if (node->getOp() == glslang::EOpSparseImageLoad) {
3188 builder.addCapability(spv::CapabilitySparseResidency);
3189 if (builder.getImageTypeFormat(builder.getImageType(operands.front())) == spv::ImageFormatUnknown)
3190 builder.addCapability(spv::CapabilityStorageImageReadWithoutFormat);
3193 operands.push_back(spv::ImageOperandsSampleMask);
3194 operands.push_back(*opIt++);
3197 // Create the return type that was a special structure
3198 spv::Id texelOut = *opIt;
3199 spv::Id typeId0 = resultType();
3200 spv::Id typeId1 = builder.getDerefTypeId(texelOut);
3201 spv::Id resultTypeId = builder.makeStructResultType(typeId0, typeId1);
3203 spv::Id resultId = builder.createOp(spv::OpImageSparseRead, resultTypeId, operands);
3205 // Decode the return type
3206 builder.createStore(builder.createCompositeExtract(resultId, typeId1, 1), texelOut);
3207 return builder.createCompositeExtract(resultId, typeId0, 0);
3209 // Process image atomic operations
3211 // GLSL "IMAGE_PARAMS" will involve in constructing an image texel pointer and this pointer,
3212 // as the first source operand, is required by SPIR-V atomic operations.
3213 operands.push_back(sampler.ms ? *(opIt++) : builder.makeUintConstant(0)); // For non-MS, the value should be 0
3215 spv::Id resultTypeId = builder.makePointer(spv::StorageClassImage, resultType());
3216 spv::Id pointer = builder.createOp(spv::OpImageTexelPointer, resultTypeId, operands);
3218 std::vector<spv::Id> operands;
3219 operands.push_back(pointer);
3220 for (; opIt != arguments.end(); ++opIt)
3221 operands.push_back(*opIt);
3223 return createAtomicOperation(node->getOp(), precision, resultType(), operands, node->getBasicType());
3227 // Check for texture functions other than queries
3228 bool sparse = node->isSparseTexture();
3229 bool cubeCompare = sampler.dim == glslang::EsdCube && sampler.arrayed && sampler.shadow;
3231 // check for bias argument
3233 #ifdef AMD_EXTENSIONS
3234 if (! cracked.lod && ! cracked.grad && ! cracked.fetch && ! cubeCompare) {
3236 if (! cracked.lod && ! cracked.gather && ! cracked.grad && ! cracked.fetch && ! cubeCompare) {
3238 int nonBiasArgCount = 2;
3239 #ifdef AMD_EXTENSIONS
3241 ++nonBiasArgCount; // comp argument should be present when bias argument is present
3245 #ifdef AMD_EXTENSIONS
3246 else if (cracked.offsets)
3250 nonBiasArgCount += 2;
3251 if (cracked.lodClamp)
3256 if ((int)arguments.size() > nonBiasArgCount)
3260 // See if the sampler param should really be just the SPV image part
3261 if (cracked.fetch) {
3262 // a fetch needs to have the image extracted first
3263 if (builder.isSampledImage(params.sampler))
3264 params.sampler = builder.createUnaryOp(spv::OpImage, builder.getImageType(params.sampler), params.sampler);
3267 #ifdef AMD_EXTENSIONS
3268 if (cracked.gather) {
3269 const auto& sourceExtensions = glslangIntermediate->getRequestedExtensions();
3270 if (bias || cracked.lod ||
3271 sourceExtensions.find(glslang::E_GL_AMD_texture_gather_bias_lod) != sourceExtensions.end()) {
3272 builder.addExtension(spv::E_SPV_AMD_texture_gather_bias_lod);
3273 builder.addCapability(spv::OpCapabilityImageGatherBiasLodAMD);
3278 // set the rest of the arguments
3280 params.coords = arguments[1];
3282 bool noImplicitLod = false;
3284 // sort out where Dref is coming from
3286 params.Dref = arguments[2];
3288 } else if (sampler.shadow && cracked.gather) {
3289 params.Dref = arguments[2];
3291 } else if (sampler.shadow) {
3292 std::vector<spv::Id> indexes;
3295 dRefComp = 2; // "The resulting 3rd component of P in the shadow forms is used as Dref"
3297 dRefComp = builder.getNumComponents(params.coords) - 1;
3298 indexes.push_back(dRefComp);
3299 params.Dref = builder.createCompositeExtract(params.coords, builder.getScalarTypeId(builder.getTypeId(params.coords)), indexes);
3304 params.lod = arguments[2];
3306 } else if (glslangIntermediate->getStage() != EShLangFragment) {
3307 // we need to invent the default lod for an explicit lod instruction for a non-fragment stage
3308 noImplicitLod = true;
3313 params.sample = arguments[2]; // For MS, "sample" should be specified
3319 params.gradX = arguments[2 + extraArgs];
3320 params.gradY = arguments[3 + extraArgs];
3324 // offset and offsets
3325 if (cracked.offset) {
3326 params.offset = arguments[2 + extraArgs];
3328 } else if (cracked.offsets) {
3329 params.offsets = arguments[2 + extraArgs];
3334 if (cracked.lodClamp) {
3335 params.lodClamp = arguments[2 + extraArgs];
3341 params.texelOut = arguments[2 + extraArgs];
3346 if (cracked.gather && ! sampler.shadow) {
3347 // default component is 0, if missing, otherwise an argument
3348 if (2 + extraArgs < (int)arguments.size()) {
3349 params.component = arguments[2 + extraArgs];
3352 params.component = builder.makeIntConstant(0);
3357 params.bias = arguments[2 + extraArgs];
3361 // projective component (might not to move)
3362 // GLSL: "The texture coordinates consumed from P, not including the last component of P,
3363 // are divided by the last component of P."
3364 // SPIR-V: "... (u [, v] [, w], q)... It may be a vector larger than needed, but all
3365 // unused components will appear after all used components."
3367 int projSourceComp = builder.getNumComponents(params.coords) - 1;
3369 switch (sampler.dim) {
3370 case glslang::Esd1D: projTargetComp = 1; break;
3371 case glslang::Esd2D: projTargetComp = 2; break;
3372 case glslang::EsdRect: projTargetComp = 2; break;
3373 default: projTargetComp = projSourceComp; break;
3375 // copy the projective coordinate if we have to
3376 if (projTargetComp != projSourceComp) {
3377 spv::Id projComp = builder.createCompositeExtract(params.coords,
3378 builder.getScalarTypeId(builder.getTypeId(params.coords)),
3380 params.coords = builder.createCompositeInsert(projComp, params.coords,
3381 builder.getTypeId(params.coords), projTargetComp);
3385 return builder.createTextureCall(precision, resultType(), sparse, cracked.fetch, cracked.proj, cracked.gather, noImplicitLod, params);
3388 spv::Id TGlslangToSpvTraverser::handleUserFunctionCall(const glslang::TIntermAggregate* node)
3390 // Grab the function's pointer from the previously created function
3391 spv::Function* function = functionMap[node->getName().c_str()];
3395 const glslang::TIntermSequence& glslangArgs = node->getSequence();
3396 const glslang::TQualifierList& qualifiers = node->getQualifierList();
3398 // See comments in makeFunctions() for details about the semantics for parameter passing.
3400 // These imply we need a four step process:
3401 // 1. Evaluate the arguments
3402 // 2. Allocate and make copies of in, out, and inout arguments
3404 // 4. Copy back the results
3406 // 1. Evaluate the arguments
3407 std::vector<spv::Builder::AccessChain> lValues;
3408 std::vector<spv::Id> rValues;
3409 std::vector<const glslang::TType*> argTypes;
3410 for (int a = 0; a < (int)glslangArgs.size(); ++a) {
3411 const glslang::TType& paramType = glslangArgs[a]->getAsTyped()->getType();
3413 builder.clearAccessChain();
3414 glslangArgs[a]->traverse(this);
3415 argTypes.push_back(¶mType);
3416 // keep outputs and opaque objects as l-values, evaluate input-only as r-values
3417 if (qualifiers[a] != glslang::EvqConstReadOnly || paramType.containsOpaque()) {
3419 lValues.push_back(builder.getAccessChain());
3422 rValues.push_back(accessChainLoad(*argTypes.back()));
3426 // 2. Allocate space for anything needing a copy, and if it's "in" or "inout"
3427 // copy the original into that space.
3429 // Also, build up the list of actual arguments to pass in for the call
3430 int lValueCount = 0;
3431 int rValueCount = 0;
3432 std::vector<spv::Id> spvArgs;
3433 for (int a = 0; a < (int)glslangArgs.size(); ++a) {
3434 const glslang::TType& paramType = glslangArgs[a]->getAsTyped()->getType();
3436 if (paramType.containsOpaque() ||
3437 (paramType.getBasicType() == glslang::EbtBlock && qualifiers[a] == glslang::EvqBuffer) ||
3438 (a == 0 && function->hasImplicitThis())) {
3439 builder.setAccessChain(lValues[lValueCount]);
3440 arg = builder.accessChainGetLValue();
3442 } else if (qualifiers[a] != glslang::EvqConstReadOnly) {
3443 // need space to hold the copy
3444 arg = builder.createVariable(spv::StorageClassFunction, convertGlslangToSpvType(paramType), "param");
3445 if (qualifiers[a] == glslang::EvqIn || qualifiers[a] == glslang::EvqInOut) {
3446 // need to copy the input into output space
3447 builder.setAccessChain(lValues[lValueCount]);
3448 spv::Id copy = accessChainLoad(*argTypes[a]);
3449 builder.clearAccessChain();
3450 builder.setAccessChainLValue(arg);
3451 multiTypeStore(paramType, copy);
3455 arg = rValues[rValueCount];
3458 spvArgs.push_back(arg);
3461 // 3. Make the call.
3462 spv::Id result = builder.createFunctionCall(function, spvArgs);
3463 builder.setPrecision(result, TranslatePrecisionDecoration(node->getType()));
3465 // 4. Copy back out an "out" arguments.
3467 for (int a = 0; a < (int)glslangArgs.size(); ++a) {
3468 const glslang::TType& paramType = glslangArgs[a]->getAsTyped()->getType();
3469 if (qualifiers[a] != glslang::EvqConstReadOnly) {
3470 if (qualifiers[a] == glslang::EvqOut || qualifiers[a] == glslang::EvqInOut) {
3471 spv::Id copy = builder.createLoad(spvArgs[a]);
3472 builder.setAccessChain(lValues[lValueCount]);
3473 multiTypeStore(paramType, copy);
3482 // Translate AST operation to SPV operation, already having SPV-based operands/types.
3483 spv::Id TGlslangToSpvTraverser::createBinaryOperation(glslang::TOperator op, spv::Decoration precision,
3484 spv::Decoration noContraction,
3485 spv::Id typeId, spv::Id left, spv::Id right,
3486 glslang::TBasicType typeProxy, bool reduceComparison)
3488 bool isUnsigned = typeProxy == glslang::EbtUint || typeProxy == glslang::EbtUint64;
3489 #ifdef AMD_EXTENSIONS
3490 bool isFloat = typeProxy == glslang::EbtFloat || typeProxy == glslang::EbtDouble || typeProxy == glslang::EbtFloat16;
3492 bool isFloat = typeProxy == glslang::EbtFloat || typeProxy == glslang::EbtDouble;
3494 bool isBool = typeProxy == glslang::EbtBool;
3496 spv::Op binOp = spv::OpNop;
3497 bool needMatchingVectors = true; // for non-matrix ops, would a scalar need to smear to match a vector?
3498 bool comparison = false;
3501 case glslang::EOpAdd:
3502 case glslang::EOpAddAssign:
3504 binOp = spv::OpFAdd;
3506 binOp = spv::OpIAdd;
3508 case glslang::EOpSub:
3509 case glslang::EOpSubAssign:
3511 binOp = spv::OpFSub;
3513 binOp = spv::OpISub;
3515 case glslang::EOpMul:
3516 case glslang::EOpMulAssign:
3518 binOp = spv::OpFMul;
3520 binOp = spv::OpIMul;
3522 case glslang::EOpVectorTimesScalar:
3523 case glslang::EOpVectorTimesScalarAssign:
3524 if (isFloat && (builder.isVector(left) || builder.isVector(right))) {
3525 if (builder.isVector(right))
3526 std::swap(left, right);
3527 assert(builder.isScalar(right));
3528 needMatchingVectors = false;
3529 binOp = spv::OpVectorTimesScalar;
3531 binOp = spv::OpIMul;
3533 case glslang::EOpVectorTimesMatrix:
3534 case glslang::EOpVectorTimesMatrixAssign:
3535 binOp = spv::OpVectorTimesMatrix;
3537 case glslang::EOpMatrixTimesVector:
3538 binOp = spv::OpMatrixTimesVector;
3540 case glslang::EOpMatrixTimesScalar:
3541 case glslang::EOpMatrixTimesScalarAssign:
3542 binOp = spv::OpMatrixTimesScalar;
3544 case glslang::EOpMatrixTimesMatrix:
3545 case glslang::EOpMatrixTimesMatrixAssign:
3546 binOp = spv::OpMatrixTimesMatrix;
3548 case glslang::EOpOuterProduct:
3549 binOp = spv::OpOuterProduct;
3550 needMatchingVectors = false;
3553 case glslang::EOpDiv:
3554 case glslang::EOpDivAssign:
3556 binOp = spv::OpFDiv;
3557 else if (isUnsigned)
3558 binOp = spv::OpUDiv;
3560 binOp = spv::OpSDiv;
3562 case glslang::EOpMod:
3563 case glslang::EOpModAssign:
3565 binOp = spv::OpFMod;
3566 else if (isUnsigned)
3567 binOp = spv::OpUMod;
3569 binOp = spv::OpSMod;
3571 case glslang::EOpRightShift:
3572 case glslang::EOpRightShiftAssign:
3574 binOp = spv::OpShiftRightLogical;
3576 binOp = spv::OpShiftRightArithmetic;
3578 case glslang::EOpLeftShift:
3579 case glslang::EOpLeftShiftAssign:
3580 binOp = spv::OpShiftLeftLogical;
3582 case glslang::EOpAnd:
3583 case glslang::EOpAndAssign:
3584 binOp = spv::OpBitwiseAnd;
3586 case glslang::EOpLogicalAnd:
3587 needMatchingVectors = false;
3588 binOp = spv::OpLogicalAnd;
3590 case glslang::EOpInclusiveOr:
3591 case glslang::EOpInclusiveOrAssign:
3592 binOp = spv::OpBitwiseOr;
3594 case glslang::EOpLogicalOr:
3595 needMatchingVectors = false;
3596 binOp = spv::OpLogicalOr;
3598 case glslang::EOpExclusiveOr:
3599 case glslang::EOpExclusiveOrAssign:
3600 binOp = spv::OpBitwiseXor;
3602 case glslang::EOpLogicalXor:
3603 needMatchingVectors = false;
3604 binOp = spv::OpLogicalNotEqual;
3607 case glslang::EOpLessThan:
3608 case glslang::EOpGreaterThan:
3609 case glslang::EOpLessThanEqual:
3610 case glslang::EOpGreaterThanEqual:
3611 case glslang::EOpEqual:
3612 case glslang::EOpNotEqual:
3613 case glslang::EOpVectorEqual:
3614 case glslang::EOpVectorNotEqual:
3621 // handle mapped binary operations (should be non-comparison)
3622 if (binOp != spv::OpNop) {
3623 assert(comparison == false);
3624 if (builder.isMatrix(left) || builder.isMatrix(right))
3625 return createBinaryMatrixOperation(binOp, precision, noContraction, typeId, left, right);
3627 // No matrix involved; make both operands be the same number of components, if needed
3628 if (needMatchingVectors)
3629 builder.promoteScalar(precision, left, right);
3631 spv::Id result = builder.createBinOp(binOp, typeId, left, right);
3632 addDecoration(result, noContraction);
3633 return builder.setPrecision(result, precision);
3639 // Handle comparison instructions
3641 if (reduceComparison && (op == glslang::EOpEqual || op == glslang::EOpNotEqual)
3642 && (builder.isVector(left) || builder.isMatrix(left) || builder.isAggregate(left)))
3643 return builder.createCompositeCompare(precision, left, right, op == glslang::EOpEqual);
3646 case glslang::EOpLessThan:
3648 binOp = spv::OpFOrdLessThan;
3649 else if (isUnsigned)
3650 binOp = spv::OpULessThan;
3652 binOp = spv::OpSLessThan;
3654 case glslang::EOpGreaterThan:
3656 binOp = spv::OpFOrdGreaterThan;
3657 else if (isUnsigned)
3658 binOp = spv::OpUGreaterThan;
3660 binOp = spv::OpSGreaterThan;
3662 case glslang::EOpLessThanEqual:
3664 binOp = spv::OpFOrdLessThanEqual;
3665 else if (isUnsigned)
3666 binOp = spv::OpULessThanEqual;
3668 binOp = spv::OpSLessThanEqual;
3670 case glslang::EOpGreaterThanEqual:
3672 binOp = spv::OpFOrdGreaterThanEqual;
3673 else if (isUnsigned)
3674 binOp = spv::OpUGreaterThanEqual;
3676 binOp = spv::OpSGreaterThanEqual;
3678 case glslang::EOpEqual:
3679 case glslang::EOpVectorEqual:
3681 binOp = spv::OpFOrdEqual;
3683 binOp = spv::OpLogicalEqual;
3685 binOp = spv::OpIEqual;
3687 case glslang::EOpNotEqual:
3688 case glslang::EOpVectorNotEqual:
3690 binOp = spv::OpFOrdNotEqual;
3692 binOp = spv::OpLogicalNotEqual;
3694 binOp = spv::OpINotEqual;
3700 if (binOp != spv::OpNop) {
3701 spv::Id result = builder.createBinOp(binOp, typeId, left, right);
3702 addDecoration(result, noContraction);
3703 return builder.setPrecision(result, precision);
3710 // Translate AST matrix operation to SPV operation, already having SPV-based operands/types.
3711 // These can be any of:
3715 // matrix * matrix linear algebraic
3718 // matrix * matrix componentwise
3719 // matrix op matrix op in {+, -, /}
3720 // matrix op scalar op in {+, -, /}
3721 // scalar op matrix op in {+, -, /}
3723 spv::Id TGlslangToSpvTraverser::createBinaryMatrixOperation(spv::Op op, spv::Decoration precision, spv::Decoration noContraction, spv::Id typeId, spv::Id left, spv::Id right)
3725 bool firstClass = true;
3727 // First, handle first-class matrix operations (* and matrix/scalar)
3730 if (builder.isMatrix(left) && builder.isScalar(right)) {
3731 // turn matrix / scalar into a multiply...
3732 right = builder.createBinOp(spv::OpFDiv, builder.getTypeId(right), builder.makeFloatConstant(1.0F), right);
3733 op = spv::OpMatrixTimesScalar;
3737 case spv::OpMatrixTimesScalar:
3738 if (builder.isMatrix(right))
3739 std::swap(left, right);
3740 assert(builder.isScalar(right));
3742 case spv::OpVectorTimesMatrix:
3743 assert(builder.isVector(left));
3744 assert(builder.isMatrix(right));
3746 case spv::OpMatrixTimesVector:
3747 assert(builder.isMatrix(left));
3748 assert(builder.isVector(right));
3750 case spv::OpMatrixTimesMatrix:
3751 assert(builder.isMatrix(left));
3752 assert(builder.isMatrix(right));
3760 spv::Id result = builder.createBinOp(op, typeId, left, right);
3761 addDecoration(result, noContraction);
3762 return builder.setPrecision(result, precision);
3765 // Handle component-wise +, -, *, %, and / for all combinations of type.
3766 // The result type of all of them is the same type as the (a) matrix operand.
3767 // The algorithm is to:
3768 // - break the matrix(es) into vectors
3769 // - smear any scalar to a vector
3770 // - do vector operations
3771 // - make a matrix out the vector results
3779 // one time set up...
3780 bool leftMat = builder.isMatrix(left);
3781 bool rightMat = builder.isMatrix(right);
3782 unsigned int numCols = leftMat ? builder.getNumColumns(left) : builder.getNumColumns(right);
3783 int numRows = leftMat ? builder.getNumRows(left) : builder.getNumRows(right);
3784 spv::Id scalarType = builder.getScalarTypeId(typeId);
3785 spv::Id vecType = builder.makeVectorType(scalarType, numRows);
3786 std::vector<spv::Id> results;
3787 spv::Id smearVec = spv::NoResult;
3788 if (builder.isScalar(left))
3789 smearVec = builder.smearScalar(precision, left, vecType);
3790 else if (builder.isScalar(right))
3791 smearVec = builder.smearScalar(precision, right, vecType);
3793 // do each vector op
3794 for (unsigned int c = 0; c < numCols; ++c) {
3795 std::vector<unsigned int> indexes;
3796 indexes.push_back(c);
3797 spv::Id leftVec = leftMat ? builder.createCompositeExtract( left, vecType, indexes) : smearVec;
3798 spv::Id rightVec = rightMat ? builder.createCompositeExtract(right, vecType, indexes) : smearVec;
3799 spv::Id result = builder.createBinOp(op, vecType, leftVec, rightVec);
3800 addDecoration(result, noContraction);
3801 results.push_back(builder.setPrecision(result, precision));
3804 // put the pieces together
3805 return builder.setPrecision(builder.createCompositeConstruct(typeId, results), precision);
3809 return spv::NoResult;
3813 spv::Id TGlslangToSpvTraverser::createUnaryOperation(glslang::TOperator op, spv::Decoration precision, spv::Decoration noContraction, spv::Id typeId, spv::Id operand, glslang::TBasicType typeProxy)
3815 spv::Op unaryOp = spv::OpNop;
3816 int extBuiltins = -1;
3818 bool isUnsigned = typeProxy == glslang::EbtUint || typeProxy == glslang::EbtUint64;
3819 #ifdef AMD_EXTENSIONS
3820 bool isFloat = typeProxy == glslang::EbtFloat || typeProxy == glslang::EbtDouble || typeProxy == glslang::EbtFloat16;
3822 bool isFloat = typeProxy == glslang::EbtFloat || typeProxy == glslang::EbtDouble;
3826 case glslang::EOpNegative:
3828 unaryOp = spv::OpFNegate;
3829 if (builder.isMatrixType(typeId))
3830 return createUnaryMatrixOperation(unaryOp, precision, noContraction, typeId, operand, typeProxy);
3832 unaryOp = spv::OpSNegate;
3835 case glslang::EOpLogicalNot:
3836 case glslang::EOpVectorLogicalNot:
3837 unaryOp = spv::OpLogicalNot;
3839 case glslang::EOpBitwiseNot:
3840 unaryOp = spv::OpNot;
3843 case glslang::EOpDeterminant:
3844 libCall = spv::GLSLstd450Determinant;
3846 case glslang::EOpMatrixInverse:
3847 libCall = spv::GLSLstd450MatrixInverse;
3849 case glslang::EOpTranspose:
3850 unaryOp = spv::OpTranspose;
3853 case glslang::EOpRadians:
3854 libCall = spv::GLSLstd450Radians;
3856 case glslang::EOpDegrees:
3857 libCall = spv::GLSLstd450Degrees;
3859 case glslang::EOpSin:
3860 libCall = spv::GLSLstd450Sin;
3862 case glslang::EOpCos:
3863 libCall = spv::GLSLstd450Cos;
3865 case glslang::EOpTan:
3866 libCall = spv::GLSLstd450Tan;
3868 case glslang::EOpAcos:
3869 libCall = spv::GLSLstd450Acos;
3871 case glslang::EOpAsin:
3872 libCall = spv::GLSLstd450Asin;
3874 case glslang::EOpAtan:
3875 libCall = spv::GLSLstd450Atan;
3878 case glslang::EOpAcosh:
3879 libCall = spv::GLSLstd450Acosh;
3881 case glslang::EOpAsinh:
3882 libCall = spv::GLSLstd450Asinh;
3884 case glslang::EOpAtanh:
3885 libCall = spv::GLSLstd450Atanh;
3887 case glslang::EOpTanh:
3888 libCall = spv::GLSLstd450Tanh;
3890 case glslang::EOpCosh:
3891 libCall = spv::GLSLstd450Cosh;
3893 case glslang::EOpSinh:
3894 libCall = spv::GLSLstd450Sinh;
3897 case glslang::EOpLength:
3898 libCall = spv::GLSLstd450Length;
3900 case glslang::EOpNormalize:
3901 libCall = spv::GLSLstd450Normalize;
3904 case glslang::EOpExp:
3905 libCall = spv::GLSLstd450Exp;
3907 case glslang::EOpLog:
3908 libCall = spv::GLSLstd450Log;
3910 case glslang::EOpExp2:
3911 libCall = spv::GLSLstd450Exp2;
3913 case glslang::EOpLog2:
3914 libCall = spv::GLSLstd450Log2;
3916 case glslang::EOpSqrt:
3917 libCall = spv::GLSLstd450Sqrt;
3919 case glslang::EOpInverseSqrt:
3920 libCall = spv::GLSLstd450InverseSqrt;
3923 case glslang::EOpFloor:
3924 libCall = spv::GLSLstd450Floor;
3926 case glslang::EOpTrunc:
3927 libCall = spv::GLSLstd450Trunc;
3929 case glslang::EOpRound:
3930 libCall = spv::GLSLstd450Round;
3932 case glslang::EOpRoundEven:
3933 libCall = spv::GLSLstd450RoundEven;
3935 case glslang::EOpCeil:
3936 libCall = spv::GLSLstd450Ceil;
3938 case glslang::EOpFract:
3939 libCall = spv::GLSLstd450Fract;
3942 case glslang::EOpIsNan:
3943 unaryOp = spv::OpIsNan;
3945 case glslang::EOpIsInf:
3946 unaryOp = spv::OpIsInf;
3948 case glslang::EOpIsFinite:
3949 unaryOp = spv::OpIsFinite;
3952 case glslang::EOpFloatBitsToInt:
3953 case glslang::EOpFloatBitsToUint:
3954 case glslang::EOpIntBitsToFloat:
3955 case glslang::EOpUintBitsToFloat:
3956 case glslang::EOpDoubleBitsToInt64:
3957 case glslang::EOpDoubleBitsToUint64:
3958 case glslang::EOpInt64BitsToDouble:
3959 case glslang::EOpUint64BitsToDouble:
3960 unaryOp = spv::OpBitcast;
3963 case glslang::EOpPackSnorm2x16:
3964 libCall = spv::GLSLstd450PackSnorm2x16;
3966 case glslang::EOpUnpackSnorm2x16:
3967 libCall = spv::GLSLstd450UnpackSnorm2x16;
3969 case glslang::EOpPackUnorm2x16:
3970 libCall = spv::GLSLstd450PackUnorm2x16;
3972 case glslang::EOpUnpackUnorm2x16:
3973 libCall = spv::GLSLstd450UnpackUnorm2x16;
3975 case glslang::EOpPackHalf2x16:
3976 libCall = spv::GLSLstd450PackHalf2x16;
3978 case glslang::EOpUnpackHalf2x16:
3979 libCall = spv::GLSLstd450UnpackHalf2x16;
3981 case glslang::EOpPackSnorm4x8:
3982 libCall = spv::GLSLstd450PackSnorm4x8;
3984 case glslang::EOpUnpackSnorm4x8:
3985 libCall = spv::GLSLstd450UnpackSnorm4x8;
3987 case glslang::EOpPackUnorm4x8:
3988 libCall = spv::GLSLstd450PackUnorm4x8;
3990 case glslang::EOpUnpackUnorm4x8:
3991 libCall = spv::GLSLstd450UnpackUnorm4x8;
3993 case glslang::EOpPackDouble2x32:
3994 libCall = spv::GLSLstd450PackDouble2x32;
3996 case glslang::EOpUnpackDouble2x32:
3997 libCall = spv::GLSLstd450UnpackDouble2x32;
4000 case glslang::EOpPackInt2x32:
4001 case glslang::EOpUnpackInt2x32:
4002 case glslang::EOpPackUint2x32:
4003 case glslang::EOpUnpackUint2x32:
4004 unaryOp = spv::OpBitcast;
4007 #ifdef AMD_EXTENSIONS
4008 case glslang::EOpPackFloat2x16:
4009 case glslang::EOpUnpackFloat2x16:
4010 unaryOp = spv::OpBitcast;
4014 case glslang::EOpDPdx:
4015 unaryOp = spv::OpDPdx;
4017 case glslang::EOpDPdy:
4018 unaryOp = spv::OpDPdy;
4020 case glslang::EOpFwidth:
4021 unaryOp = spv::OpFwidth;
4023 case glslang::EOpDPdxFine:
4024 builder.addCapability(spv::CapabilityDerivativeControl);
4025 unaryOp = spv::OpDPdxFine;
4027 case glslang::EOpDPdyFine:
4028 builder.addCapability(spv::CapabilityDerivativeControl);
4029 unaryOp = spv::OpDPdyFine;
4031 case glslang::EOpFwidthFine:
4032 builder.addCapability(spv::CapabilityDerivativeControl);
4033 unaryOp = spv::OpFwidthFine;
4035 case glslang::EOpDPdxCoarse:
4036 builder.addCapability(spv::CapabilityDerivativeControl);
4037 unaryOp = spv::OpDPdxCoarse;
4039 case glslang::EOpDPdyCoarse:
4040 builder.addCapability(spv::CapabilityDerivativeControl);
4041 unaryOp = spv::OpDPdyCoarse;
4043 case glslang::EOpFwidthCoarse:
4044 builder.addCapability(spv::CapabilityDerivativeControl);
4045 unaryOp = spv::OpFwidthCoarse;
4047 case glslang::EOpInterpolateAtCentroid:
4048 builder.addCapability(spv::CapabilityInterpolationFunction);
4049 libCall = spv::GLSLstd450InterpolateAtCentroid;
4051 case glslang::EOpAny:
4052 unaryOp = spv::OpAny;
4054 case glslang::EOpAll:
4055 unaryOp = spv::OpAll;
4058 case glslang::EOpAbs:
4060 libCall = spv::GLSLstd450FAbs;
4062 libCall = spv::GLSLstd450SAbs;
4064 case glslang::EOpSign:
4066 libCall = spv::GLSLstd450FSign;
4068 libCall = spv::GLSLstd450SSign;
4071 case glslang::EOpAtomicCounterIncrement:
4072 case glslang::EOpAtomicCounterDecrement:
4073 case glslang::EOpAtomicCounter:
4075 // Handle all of the atomics in one place, in createAtomicOperation()
4076 std::vector<spv::Id> operands;
4077 operands.push_back(operand);
4078 return createAtomicOperation(op, precision, typeId, operands, typeProxy);
4081 case glslang::EOpBitFieldReverse:
4082 unaryOp = spv::OpBitReverse;
4084 case glslang::EOpBitCount:
4085 unaryOp = spv::OpBitCount;
4087 case glslang::EOpFindLSB:
4088 libCall = spv::GLSLstd450FindILsb;
4090 case glslang::EOpFindMSB:
4092 libCall = spv::GLSLstd450FindUMsb;
4094 libCall = spv::GLSLstd450FindSMsb;
4097 case glslang::EOpBallot:
4098 case glslang::EOpReadFirstInvocation:
4099 case glslang::EOpAnyInvocation:
4100 case glslang::EOpAllInvocations:
4101 case glslang::EOpAllInvocationsEqual:
4102 #ifdef AMD_EXTENSIONS
4103 case glslang::EOpMinInvocations:
4104 case glslang::EOpMaxInvocations:
4105 case glslang::EOpAddInvocations:
4106 case glslang::EOpMinInvocationsNonUniform:
4107 case glslang::EOpMaxInvocationsNonUniform:
4108 case glslang::EOpAddInvocationsNonUniform:
4109 case glslang::EOpMinInvocationsInclusiveScan:
4110 case glslang::EOpMaxInvocationsInclusiveScan:
4111 case glslang::EOpAddInvocationsInclusiveScan:
4112 case glslang::EOpMinInvocationsInclusiveScanNonUniform:
4113 case glslang::EOpMaxInvocationsInclusiveScanNonUniform:
4114 case glslang::EOpAddInvocationsInclusiveScanNonUniform:
4115 case glslang::EOpMinInvocationsExclusiveScan:
4116 case glslang::EOpMaxInvocationsExclusiveScan:
4117 case glslang::EOpAddInvocationsExclusiveScan:
4118 case glslang::EOpMinInvocationsExclusiveScanNonUniform:
4119 case glslang::EOpMaxInvocationsExclusiveScanNonUniform:
4120 case glslang::EOpAddInvocationsExclusiveScanNonUniform:
4123 std::vector<spv::Id> operands;
4124 operands.push_back(operand);
4125 return createInvocationsOperation(op, typeId, operands, typeProxy);
4128 #ifdef AMD_EXTENSIONS
4129 case glslang::EOpMbcnt:
4130 extBuiltins = getExtBuiltins(spv::E_SPV_AMD_shader_ballot);
4131 libCall = spv::MbcntAMD;
4134 case glslang::EOpCubeFaceIndex:
4135 extBuiltins = getExtBuiltins(spv::E_SPV_AMD_gcn_shader);
4136 libCall = spv::CubeFaceIndexAMD;
4139 case glslang::EOpCubeFaceCoord:
4140 extBuiltins = getExtBuiltins(spv::E_SPV_AMD_gcn_shader);
4141 libCall = spv::CubeFaceCoordAMD;
4151 std::vector<spv::Id> args;
4152 args.push_back(operand);
4153 id = builder.createBuiltinCall(typeId, extBuiltins >= 0 ? extBuiltins : stdBuiltins, libCall, args);
4155 id = builder.createUnaryOp(unaryOp, typeId, operand);
4158 addDecoration(id, noContraction);
4159 return builder.setPrecision(id, precision);
4162 // Create a unary operation on a matrix
4163 spv::Id TGlslangToSpvTraverser::createUnaryMatrixOperation(spv::Op op, spv::Decoration precision, spv::Decoration noContraction, spv::Id typeId, spv::Id operand, glslang::TBasicType /* typeProxy */)
4165 // Handle unary operations vector by vector.
4166 // The result type is the same type as the original type.
4167 // The algorithm is to:
4168 // - break the matrix into vectors
4169 // - apply the operation to each vector
4170 // - make a matrix out the vector results
4172 // get the types sorted out
4173 int numCols = builder.getNumColumns(operand);
4174 int numRows = builder.getNumRows(operand);
4175 spv::Id srcVecType = builder.makeVectorType(builder.getScalarTypeId(builder.getTypeId(operand)), numRows);
4176 spv::Id destVecType = builder.makeVectorType(builder.getScalarTypeId(typeId), numRows);
4177 std::vector<spv::Id> results;
4179 // do each vector op
4180 for (int c = 0; c < numCols; ++c) {
4181 std::vector<unsigned int> indexes;
4182 indexes.push_back(c);
4183 spv::Id srcVec = builder.createCompositeExtract(operand, srcVecType, indexes);
4184 spv::Id destVec = builder.createUnaryOp(op, destVecType, srcVec);
4185 addDecoration(destVec, noContraction);
4186 results.push_back(builder.setPrecision(destVec, precision));
4189 // put the pieces together
4190 return builder.setPrecision(builder.createCompositeConstruct(typeId, results), precision);
4193 spv::Id TGlslangToSpvTraverser::createConversion(glslang::TOperator op, spv::Decoration precision, spv::Decoration noContraction, spv::Id destType, spv::Id operand, glslang::TBasicType typeProxy)
4195 spv::Op convOp = spv::OpNop;
4200 int vectorSize = builder.isVectorType(destType) ? builder.getNumTypeComponents(destType) : 0;
4203 case glslang::EOpConvIntToBool:
4204 case glslang::EOpConvUintToBool:
4205 case glslang::EOpConvInt64ToBool:
4206 case glslang::EOpConvUint64ToBool:
4207 zero = (op == glslang::EOpConvInt64ToBool ||
4208 op == glslang::EOpConvUint64ToBool) ? builder.makeUint64Constant(0) : builder.makeUintConstant(0);
4209 zero = makeSmearedConstant(zero, vectorSize);
4210 return builder.createBinOp(spv::OpINotEqual, destType, operand, zero);
4212 case glslang::EOpConvFloatToBool:
4213 zero = builder.makeFloatConstant(0.0F);
4214 zero = makeSmearedConstant(zero, vectorSize);
4215 return builder.createBinOp(spv::OpFOrdNotEqual, destType, operand, zero);
4217 case glslang::EOpConvDoubleToBool:
4218 zero = builder.makeDoubleConstant(0.0);
4219 zero = makeSmearedConstant(zero, vectorSize);
4220 return builder.createBinOp(spv::OpFOrdNotEqual, destType, operand, zero);
4222 #ifdef AMD_EXTENSIONS
4223 case glslang::EOpConvFloat16ToBool:
4224 zero = builder.makeFloat16Constant(0.0F);
4225 zero = makeSmearedConstant(zero, vectorSize);
4226 return builder.createBinOp(spv::OpFOrdNotEqual, destType, operand, zero);
4229 case glslang::EOpConvBoolToFloat:
4230 convOp = spv::OpSelect;
4231 zero = builder.makeFloatConstant(0.0F);
4232 one = builder.makeFloatConstant(1.0F);
4235 case glslang::EOpConvBoolToDouble:
4236 convOp = spv::OpSelect;
4237 zero = builder.makeDoubleConstant(0.0);
4238 one = builder.makeDoubleConstant(1.0);
4241 #ifdef AMD_EXTENSIONS
4242 case glslang::EOpConvBoolToFloat16:
4243 convOp = spv::OpSelect;
4244 zero = builder.makeFloat16Constant(0.0F);
4245 one = builder.makeFloat16Constant(1.0F);
4249 case glslang::EOpConvBoolToInt:
4250 case glslang::EOpConvBoolToInt64:
4251 zero = (op == glslang::EOpConvBoolToInt64) ? builder.makeInt64Constant(0) : builder.makeIntConstant(0);
4252 one = (op == glslang::EOpConvBoolToInt64) ? builder.makeInt64Constant(1) : builder.makeIntConstant(1);
4253 convOp = spv::OpSelect;
4256 case glslang::EOpConvBoolToUint:
4257 case glslang::EOpConvBoolToUint64:
4258 zero = (op == glslang::EOpConvBoolToUint64) ? builder.makeUint64Constant(0) : builder.makeUintConstant(0);
4259 one = (op == glslang::EOpConvBoolToUint64) ? builder.makeUint64Constant(1) : builder.makeUintConstant(1);
4260 convOp = spv::OpSelect;
4263 case glslang::EOpConvIntToFloat:
4264 case glslang::EOpConvIntToDouble:
4265 case glslang::EOpConvInt64ToFloat:
4266 case glslang::EOpConvInt64ToDouble:
4267 #ifdef AMD_EXTENSIONS
4268 case glslang::EOpConvIntToFloat16:
4269 case glslang::EOpConvInt64ToFloat16:
4271 convOp = spv::OpConvertSToF;
4274 case glslang::EOpConvUintToFloat:
4275 case glslang::EOpConvUintToDouble:
4276 case glslang::EOpConvUint64ToFloat:
4277 case glslang::EOpConvUint64ToDouble:
4278 #ifdef AMD_EXTENSIONS
4279 case glslang::EOpConvUintToFloat16:
4280 case glslang::EOpConvUint64ToFloat16:
4282 convOp = spv::OpConvertUToF;
4285 case glslang::EOpConvDoubleToFloat:
4286 case glslang::EOpConvFloatToDouble:
4287 #ifdef AMD_EXTENSIONS
4288 case glslang::EOpConvDoubleToFloat16:
4289 case glslang::EOpConvFloat16ToDouble:
4290 case glslang::EOpConvFloatToFloat16:
4291 case glslang::EOpConvFloat16ToFloat:
4293 convOp = spv::OpFConvert;
4294 if (builder.isMatrixType(destType))
4295 return createUnaryMatrixOperation(convOp, precision, noContraction, destType, operand, typeProxy);
4298 case glslang::EOpConvFloatToInt:
4299 case glslang::EOpConvDoubleToInt:
4300 case glslang::EOpConvFloatToInt64:
4301 case glslang::EOpConvDoubleToInt64:
4302 #ifdef AMD_EXTENSIONS
4303 case glslang::EOpConvFloat16ToInt:
4304 case glslang::EOpConvFloat16ToInt64:
4306 convOp = spv::OpConvertFToS;
4309 case glslang::EOpConvUintToInt:
4310 case glslang::EOpConvIntToUint:
4311 case glslang::EOpConvUint64ToInt64:
4312 case glslang::EOpConvInt64ToUint64:
4313 if (builder.isInSpecConstCodeGenMode()) {
4314 // Build zero scalar or vector for OpIAdd.
4315 zero = (op == glslang::EOpConvUint64ToInt64 ||
4316 op == glslang::EOpConvInt64ToUint64) ? builder.makeUint64Constant(0) : builder.makeUintConstant(0);
4317 zero = makeSmearedConstant(zero, vectorSize);
4318 // Use OpIAdd, instead of OpBitcast to do the conversion when
4319 // generating for OpSpecConstantOp instruction.
4320 return builder.createBinOp(spv::OpIAdd, destType, operand, zero);
4322 // For normal run-time conversion instruction, use OpBitcast.
4323 convOp = spv::OpBitcast;
4326 case glslang::EOpConvFloatToUint:
4327 case glslang::EOpConvDoubleToUint:
4328 case glslang::EOpConvFloatToUint64:
4329 case glslang::EOpConvDoubleToUint64:
4330 #ifdef AMD_EXTENSIONS
4331 case glslang::EOpConvFloat16ToUint:
4332 case glslang::EOpConvFloat16ToUint64:
4334 convOp = spv::OpConvertFToU;
4337 case glslang::EOpConvIntToInt64:
4338 case glslang::EOpConvInt64ToInt:
4339 convOp = spv::OpSConvert;
4342 case glslang::EOpConvUintToUint64:
4343 case glslang::EOpConvUint64ToUint:
4344 convOp = spv::OpUConvert;
4347 case glslang::EOpConvIntToUint64:
4348 case glslang::EOpConvInt64ToUint:
4349 case glslang::EOpConvUint64ToInt:
4350 case glslang::EOpConvUintToInt64:
4351 // OpSConvert/OpUConvert + OpBitCast
4353 case glslang::EOpConvIntToUint64:
4354 convOp = spv::OpSConvert;
4355 type = builder.makeIntType(64);
4357 case glslang::EOpConvInt64ToUint:
4358 convOp = spv::OpSConvert;
4359 type = builder.makeIntType(32);
4361 case glslang::EOpConvUint64ToInt:
4362 convOp = spv::OpUConvert;
4363 type = builder.makeUintType(32);
4365 case glslang::EOpConvUintToInt64:
4366 convOp = spv::OpUConvert;
4367 type = builder.makeUintType(64);
4375 type = builder.makeVectorType(type, vectorSize);
4377 operand = builder.createUnaryOp(convOp, type, operand);
4379 if (builder.isInSpecConstCodeGenMode()) {
4380 // Build zero scalar or vector for OpIAdd.
4381 zero = (op == glslang::EOpConvIntToUint64 ||
4382 op == glslang::EOpConvUintToInt64) ? builder.makeUint64Constant(0) : builder.makeUintConstant(0);
4383 zero = makeSmearedConstant(zero, vectorSize);
4384 // Use OpIAdd, instead of OpBitcast to do the conversion when
4385 // generating for OpSpecConstantOp instruction.
4386 return builder.createBinOp(spv::OpIAdd, destType, operand, zero);
4388 // For normal run-time conversion instruction, use OpBitcast.
4389 convOp = spv::OpBitcast;
4396 if (convOp == spv::OpNop)
4399 if (convOp == spv::OpSelect) {
4400 zero = makeSmearedConstant(zero, vectorSize);
4401 one = makeSmearedConstant(one, vectorSize);
4402 result = builder.createTriOp(convOp, destType, operand, one, zero);
4404 result = builder.createUnaryOp(convOp, destType, operand);
4406 return builder.setPrecision(result, precision);
4409 spv::Id TGlslangToSpvTraverser::makeSmearedConstant(spv::Id constant, int vectorSize)
4411 if (vectorSize == 0)
4414 spv::Id vectorTypeId = builder.makeVectorType(builder.getTypeId(constant), vectorSize);
4415 std::vector<spv::Id> components;
4416 for (int c = 0; c < vectorSize; ++c)
4417 components.push_back(constant);
4418 return builder.makeCompositeConstant(vectorTypeId, components);
4421 // For glslang ops that map to SPV atomic opCodes
4422 spv::Id TGlslangToSpvTraverser::createAtomicOperation(glslang::TOperator op, spv::Decoration /*precision*/, spv::Id typeId, std::vector<spv::Id>& operands, glslang::TBasicType typeProxy)
4424 spv::Op opCode = spv::OpNop;
4427 case glslang::EOpAtomicAdd:
4428 case glslang::EOpImageAtomicAdd:
4429 opCode = spv::OpAtomicIAdd;
4431 case glslang::EOpAtomicMin:
4432 case glslang::EOpImageAtomicMin:
4433 opCode = typeProxy == glslang::EbtUint ? spv::OpAtomicUMin : spv::OpAtomicSMin;
4435 case glslang::EOpAtomicMax:
4436 case glslang::EOpImageAtomicMax:
4437 opCode = typeProxy == glslang::EbtUint ? spv::OpAtomicUMax : spv::OpAtomicSMax;
4439 case glslang::EOpAtomicAnd:
4440 case glslang::EOpImageAtomicAnd:
4441 opCode = spv::OpAtomicAnd;
4443 case glslang::EOpAtomicOr:
4444 case glslang::EOpImageAtomicOr:
4445 opCode = spv::OpAtomicOr;
4447 case glslang::EOpAtomicXor:
4448 case glslang::EOpImageAtomicXor:
4449 opCode = spv::OpAtomicXor;
4451 case glslang::EOpAtomicExchange:
4452 case glslang::EOpImageAtomicExchange:
4453 opCode = spv::OpAtomicExchange;
4455 case glslang::EOpAtomicCompSwap:
4456 case glslang::EOpImageAtomicCompSwap:
4457 opCode = spv::OpAtomicCompareExchange;
4459 case glslang::EOpAtomicCounterIncrement:
4460 opCode = spv::OpAtomicIIncrement;
4462 case glslang::EOpAtomicCounterDecrement:
4463 opCode = spv::OpAtomicIDecrement;
4465 case glslang::EOpAtomicCounter:
4466 opCode = spv::OpAtomicLoad;
4473 // Sort out the operands
4474 // - mapping from glslang -> SPV
4475 // - there are extra SPV operands with no glslang source
4476 // - compare-exchange swaps the value and comparator
4477 // - compare-exchange has an extra memory semantics
4478 std::vector<spv::Id> spvAtomicOperands; // hold the spv operands
4479 auto opIt = operands.begin(); // walk the glslang operands
4480 spvAtomicOperands.push_back(*(opIt++));
4481 spvAtomicOperands.push_back(builder.makeUintConstant(spv::ScopeDevice)); // TBD: what is the correct scope?
4482 spvAtomicOperands.push_back(builder.makeUintConstant(spv::MemorySemanticsMaskNone)); // TBD: what are the correct memory semantics?
4483 if (opCode == spv::OpAtomicCompareExchange) {
4484 // There are 2 memory semantics for compare-exchange. And the operand order of "comparator" and "new value" in GLSL
4485 // differs from that in SPIR-V. Hence, special processing is required.
4486 spvAtomicOperands.push_back(builder.makeUintConstant(spv::MemorySemanticsMaskNone));
4487 spvAtomicOperands.push_back(*(opIt + 1));
4488 spvAtomicOperands.push_back(*opIt);
4492 // Add the rest of the operands, skipping any that were dealt with above.
4493 for (; opIt != operands.end(); ++opIt)
4494 spvAtomicOperands.push_back(*opIt);
4496 return builder.createOp(opCode, typeId, spvAtomicOperands);
4499 // Create group invocation operations.
4500 spv::Id TGlslangToSpvTraverser::createInvocationsOperation(glslang::TOperator op, spv::Id typeId, std::vector<spv::Id>& operands, glslang::TBasicType typeProxy)
4502 #ifdef AMD_EXTENSIONS
4503 bool isUnsigned = typeProxy == glslang::EbtUint || typeProxy == glslang::EbtUint64;
4504 bool isFloat = typeProxy == glslang::EbtFloat || typeProxy == glslang::EbtDouble || typeProxy == glslang::EbtFloat16;
4507 spv::Op opCode = spv::OpNop;
4508 std::vector<spv::Id> spvGroupOperands;
4509 spv::GroupOperation groupOperation = spv::GroupOperationMax;
4511 if (op == glslang::EOpBallot || op == glslang::EOpReadFirstInvocation ||
4512 op == glslang::EOpReadInvocation) {
4513 builder.addExtension(spv::E_SPV_KHR_shader_ballot);
4514 builder.addCapability(spv::CapabilitySubgroupBallotKHR);
4515 } else if (op == glslang::EOpAnyInvocation ||
4516 op == glslang::EOpAllInvocations ||
4517 op == glslang::EOpAllInvocationsEqual) {
4518 builder.addExtension(spv::E_SPV_KHR_subgroup_vote);
4519 builder.addCapability(spv::CapabilitySubgroupVoteKHR);
4521 builder.addCapability(spv::CapabilityGroups);
4522 #ifdef AMD_EXTENSIONS
4523 if (op == glslang::EOpMinInvocationsNonUniform ||
4524 op == glslang::EOpMaxInvocationsNonUniform ||
4525 op == glslang::EOpAddInvocationsNonUniform ||
4526 op == glslang::EOpMinInvocationsInclusiveScanNonUniform ||
4527 op == glslang::EOpMaxInvocationsInclusiveScanNonUniform ||
4528 op == glslang::EOpAddInvocationsInclusiveScanNonUniform ||
4529 op == glslang::EOpMinInvocationsExclusiveScanNonUniform ||
4530 op == glslang::EOpMaxInvocationsExclusiveScanNonUniform ||
4531 op == glslang::EOpAddInvocationsExclusiveScanNonUniform)
4532 builder.addExtension(spv::E_SPV_AMD_shader_ballot);
4535 spvGroupOperands.push_back(builder.makeUintConstant(spv::ScopeSubgroup));
4536 #ifdef AMD_EXTENSIONS
4538 case glslang::EOpMinInvocations:
4539 case glslang::EOpMaxInvocations:
4540 case glslang::EOpAddInvocations:
4541 case glslang::EOpMinInvocationsNonUniform:
4542 case glslang::EOpMaxInvocationsNonUniform:
4543 case glslang::EOpAddInvocationsNonUniform:
4544 groupOperation = spv::GroupOperationReduce;
4545 spvGroupOperands.push_back(groupOperation);
4547 case glslang::EOpMinInvocationsInclusiveScan:
4548 case glslang::EOpMaxInvocationsInclusiveScan:
4549 case glslang::EOpAddInvocationsInclusiveScan:
4550 case glslang::EOpMinInvocationsInclusiveScanNonUniform:
4551 case glslang::EOpMaxInvocationsInclusiveScanNonUniform:
4552 case glslang::EOpAddInvocationsInclusiveScanNonUniform:
4553 groupOperation = spv::GroupOperationInclusiveScan;
4554 spvGroupOperands.push_back(groupOperation);
4556 case glslang::EOpMinInvocationsExclusiveScan:
4557 case glslang::EOpMaxInvocationsExclusiveScan:
4558 case glslang::EOpAddInvocationsExclusiveScan:
4559 case glslang::EOpMinInvocationsExclusiveScanNonUniform:
4560 case glslang::EOpMaxInvocationsExclusiveScanNonUniform:
4561 case glslang::EOpAddInvocationsExclusiveScanNonUniform:
4562 groupOperation = spv::GroupOperationExclusiveScan;
4563 spvGroupOperands.push_back(groupOperation);
4571 for (auto opIt = operands.begin(); opIt != operands.end(); ++opIt)
4572 spvGroupOperands.push_back(*opIt);
4575 case glslang::EOpAnyInvocation:
4576 opCode = spv::OpSubgroupAnyKHR;
4578 case glslang::EOpAllInvocations:
4579 opCode = spv::OpSubgroupAllKHR;
4581 case glslang::EOpAllInvocationsEqual:
4582 opCode = spv::OpSubgroupAllEqualKHR;
4584 case glslang::EOpReadInvocation:
4585 opCode = spv::OpSubgroupReadInvocationKHR;
4586 if (builder.isVectorType(typeId))
4587 return CreateInvocationsVectorOperation(opCode, groupOperation, typeId, operands);
4589 case glslang::EOpReadFirstInvocation:
4590 opCode = spv::OpSubgroupFirstInvocationKHR;
4592 case glslang::EOpBallot:
4594 // NOTE: According to the spec, the result type of "OpSubgroupBallotKHR" must be a 4 component vector of 32
4595 // bit integer types. The GLSL built-in function "ballotARB()" assumes the maximum number of invocations in
4596 // a subgroup is 64. Thus, we have to convert uvec4.xy to uint64_t as follow:
4598 // result = Bitcast(SubgroupBallotKHR(Predicate).xy)
4600 spv::Id uintType = builder.makeUintType(32);
4601 spv::Id uvec4Type = builder.makeVectorType(uintType, 4);
4602 spv::Id result = builder.createOp(spv::OpSubgroupBallotKHR, uvec4Type, spvGroupOperands);
4604 std::vector<spv::Id> components;
4605 components.push_back(builder.createCompositeExtract(result, uintType, 0));
4606 components.push_back(builder.createCompositeExtract(result, uintType, 1));
4608 spv::Id uvec2Type = builder.makeVectorType(uintType, 2);
4609 return builder.createUnaryOp(spv::OpBitcast, typeId,
4610 builder.createCompositeConstruct(uvec2Type, components));
4613 #ifdef AMD_EXTENSIONS
4614 case glslang::EOpMinInvocations:
4615 case glslang::EOpMaxInvocations:
4616 case glslang::EOpAddInvocations:
4617 case glslang::EOpMinInvocationsInclusiveScan:
4618 case glslang::EOpMaxInvocationsInclusiveScan:
4619 case glslang::EOpAddInvocationsInclusiveScan:
4620 case glslang::EOpMinInvocationsExclusiveScan:
4621 case glslang::EOpMaxInvocationsExclusiveScan:
4622 case glslang::EOpAddInvocationsExclusiveScan:
4623 if (op == glslang::EOpMinInvocations ||
4624 op == glslang::EOpMinInvocationsInclusiveScan ||
4625 op == glslang::EOpMinInvocationsExclusiveScan) {
4627 opCode = spv::OpGroupFMin;
4630 opCode = spv::OpGroupUMin;
4632 opCode = spv::OpGroupSMin;
4634 } else if (op == glslang::EOpMaxInvocations ||
4635 op == glslang::EOpMaxInvocationsInclusiveScan ||
4636 op == glslang::EOpMaxInvocationsExclusiveScan) {
4638 opCode = spv::OpGroupFMax;
4641 opCode = spv::OpGroupUMax;
4643 opCode = spv::OpGroupSMax;
4647 opCode = spv::OpGroupFAdd;
4649 opCode = spv::OpGroupIAdd;
4652 if (builder.isVectorType(typeId))
4653 return CreateInvocationsVectorOperation(opCode, groupOperation, typeId, operands);
4656 case glslang::EOpMinInvocationsNonUniform:
4657 case glslang::EOpMaxInvocationsNonUniform:
4658 case glslang::EOpAddInvocationsNonUniform:
4659 case glslang::EOpMinInvocationsInclusiveScanNonUniform:
4660 case glslang::EOpMaxInvocationsInclusiveScanNonUniform:
4661 case glslang::EOpAddInvocationsInclusiveScanNonUniform:
4662 case glslang::EOpMinInvocationsExclusiveScanNonUniform:
4663 case glslang::EOpMaxInvocationsExclusiveScanNonUniform:
4664 case glslang::EOpAddInvocationsExclusiveScanNonUniform:
4665 if (op == glslang::EOpMinInvocationsNonUniform ||
4666 op == glslang::EOpMinInvocationsInclusiveScanNonUniform ||
4667 op == glslang::EOpMinInvocationsExclusiveScanNonUniform) {
4669 opCode = spv::OpGroupFMinNonUniformAMD;
4672 opCode = spv::OpGroupUMinNonUniformAMD;
4674 opCode = spv::OpGroupSMinNonUniformAMD;
4677 else if (op == glslang::EOpMaxInvocationsNonUniform ||
4678 op == glslang::EOpMaxInvocationsInclusiveScanNonUniform ||
4679 op == glslang::EOpMaxInvocationsExclusiveScanNonUniform) {
4681 opCode = spv::OpGroupFMaxNonUniformAMD;
4684 opCode = spv::OpGroupUMaxNonUniformAMD;
4686 opCode = spv::OpGroupSMaxNonUniformAMD;
4691 opCode = spv::OpGroupFAddNonUniformAMD;
4693 opCode = spv::OpGroupIAddNonUniformAMD;
4696 if (builder.isVectorType(typeId))
4697 return CreateInvocationsVectorOperation(opCode, groupOperation, typeId, operands);
4702 logger->missingFunctionality("invocation operation");
4703 return spv::NoResult;
4706 assert(opCode != spv::OpNop);
4707 return builder.createOp(opCode, typeId, spvGroupOperands);
4710 // Create group invocation operations on a vector
4711 spv::Id TGlslangToSpvTraverser::CreateInvocationsVectorOperation(spv::Op op, spv::GroupOperation groupOperation, spv::Id typeId, std::vector<spv::Id>& operands)
4713 #ifdef AMD_EXTENSIONS
4714 assert(op == spv::OpGroupFMin || op == spv::OpGroupUMin || op == spv::OpGroupSMin ||
4715 op == spv::OpGroupFMax || op == spv::OpGroupUMax || op == spv::OpGroupSMax ||
4716 op == spv::OpGroupFAdd || op == spv::OpGroupIAdd || op == spv::OpGroupBroadcast ||
4717 op == spv::OpSubgroupReadInvocationKHR ||
4718 op == spv::OpGroupFMinNonUniformAMD || op == spv::OpGroupUMinNonUniformAMD || op == spv::OpGroupSMinNonUniformAMD ||
4719 op == spv::OpGroupFMaxNonUniformAMD || op == spv::OpGroupUMaxNonUniformAMD || op == spv::OpGroupSMaxNonUniformAMD ||
4720 op == spv::OpGroupFAddNonUniformAMD || op == spv::OpGroupIAddNonUniformAMD);
4722 assert(op == spv::OpGroupFMin || op == spv::OpGroupUMin || op == spv::OpGroupSMin ||
4723 op == spv::OpGroupFMax || op == spv::OpGroupUMax || op == spv::OpGroupSMax ||
4724 op == spv::OpGroupFAdd || op == spv::OpGroupIAdd || op == spv::OpGroupBroadcast ||
4725 op == spv::OpSubgroupReadInvocationKHR);
4728 // Handle group invocation operations scalar by scalar.
4729 // The result type is the same type as the original type.
4730 // The algorithm is to:
4731 // - break the vector into scalars
4732 // - apply the operation to each scalar
4733 // - make a vector out the scalar results
4735 // get the types sorted out
4736 int numComponents = builder.getNumComponents(operands[0]);
4737 spv::Id scalarType = builder.getScalarTypeId(builder.getTypeId(operands[0]));
4738 std::vector<spv::Id> results;
4740 // do each scalar op
4741 for (int comp = 0; comp < numComponents; ++comp) {
4742 std::vector<unsigned int> indexes;
4743 indexes.push_back(comp);
4744 spv::Id scalar = builder.createCompositeExtract(operands[0], scalarType, indexes);
4745 std::vector<spv::Id> spvGroupOperands;
4746 if (op == spv::OpSubgroupReadInvocationKHR) {
4747 spvGroupOperands.push_back(scalar);
4748 spvGroupOperands.push_back(operands[1]);
4749 } else if (op == spv::OpGroupBroadcast) {
4750 spvGroupOperands.push_back(builder.makeUintConstant(spv::ScopeSubgroup));
4751 spvGroupOperands.push_back(scalar);
4752 spvGroupOperands.push_back(operands[1]);
4754 spvGroupOperands.push_back(builder.makeUintConstant(spv::ScopeSubgroup));
4755 spvGroupOperands.push_back(groupOperation);
4756 spvGroupOperands.push_back(scalar);
4759 results.push_back(builder.createOp(op, scalarType, spvGroupOperands));
4762 // put the pieces together
4763 return builder.createCompositeConstruct(typeId, results);
4766 spv::Id TGlslangToSpvTraverser::createMiscOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId, std::vector<spv::Id>& operands, glslang::TBasicType typeProxy)
4768 bool isUnsigned = typeProxy == glslang::EbtUint || typeProxy == glslang::EbtUint64;
4769 #ifdef AMD_EXTENSIONS
4770 bool isFloat = typeProxy == glslang::EbtFloat || typeProxy == glslang::EbtDouble || typeProxy == glslang::EbtFloat16;
4772 bool isFloat = typeProxy == glslang::EbtFloat || typeProxy == glslang::EbtDouble;
4775 spv::Op opCode = spv::OpNop;
4776 int extBuiltins = -1;
4778 size_t consumedOperands = operands.size();
4779 spv::Id typeId0 = 0;
4780 if (consumedOperands > 0)
4781 typeId0 = builder.getTypeId(operands[0]);
4782 spv::Id typeId1 = 0;
4783 if (consumedOperands > 1)
4784 typeId1 = builder.getTypeId(operands[1]);
4785 spv::Id frexpIntType = 0;
4788 case glslang::EOpMin:
4790 libCall = spv::GLSLstd450FMin;
4791 else if (isUnsigned)
4792 libCall = spv::GLSLstd450UMin;
4794 libCall = spv::GLSLstd450SMin;
4795 builder.promoteScalar(precision, operands.front(), operands.back());
4797 case glslang::EOpModf:
4798 libCall = spv::GLSLstd450Modf;
4800 case glslang::EOpMax:
4802 libCall = spv::GLSLstd450FMax;
4803 else if (isUnsigned)
4804 libCall = spv::GLSLstd450UMax;
4806 libCall = spv::GLSLstd450SMax;
4807 builder.promoteScalar(precision, operands.front(), operands.back());
4809 case glslang::EOpPow:
4810 libCall = spv::GLSLstd450Pow;
4812 case glslang::EOpDot:
4813 opCode = spv::OpDot;
4815 case glslang::EOpAtan:
4816 libCall = spv::GLSLstd450Atan2;
4819 case glslang::EOpClamp:
4821 libCall = spv::GLSLstd450FClamp;
4822 else if (isUnsigned)
4823 libCall = spv::GLSLstd450UClamp;
4825 libCall = spv::GLSLstd450SClamp;
4826 builder.promoteScalar(precision, operands.front(), operands[1]);
4827 builder.promoteScalar(precision, operands.front(), operands[2]);
4829 case glslang::EOpMix:
4830 if (! builder.isBoolType(builder.getScalarTypeId(builder.getTypeId(operands.back())))) {
4832 libCall = spv::GLSLstd450FMix;
4834 opCode = spv::OpSelect;
4835 std::swap(operands.front(), operands.back());
4837 builder.promoteScalar(precision, operands.front(), operands.back());
4839 case glslang::EOpStep:
4840 libCall = spv::GLSLstd450Step;
4841 builder.promoteScalar(precision, operands.front(), operands.back());
4843 case glslang::EOpSmoothStep:
4844 libCall = spv::GLSLstd450SmoothStep;
4845 builder.promoteScalar(precision, operands[0], operands[2]);
4846 builder.promoteScalar(precision, operands[1], operands[2]);
4849 case glslang::EOpDistance:
4850 libCall = spv::GLSLstd450Distance;
4852 case glslang::EOpCross:
4853 libCall = spv::GLSLstd450Cross;
4855 case glslang::EOpFaceForward:
4856 libCall = spv::GLSLstd450FaceForward;
4858 case glslang::EOpReflect:
4859 libCall = spv::GLSLstd450Reflect;
4861 case glslang::EOpRefract:
4862 libCall = spv::GLSLstd450Refract;
4864 case glslang::EOpInterpolateAtSample:
4865 builder.addCapability(spv::CapabilityInterpolationFunction);
4866 libCall = spv::GLSLstd450InterpolateAtSample;
4868 case glslang::EOpInterpolateAtOffset:
4869 builder.addCapability(spv::CapabilityInterpolationFunction);
4870 libCall = spv::GLSLstd450InterpolateAtOffset;
4872 case glslang::EOpAddCarry:
4873 opCode = spv::OpIAddCarry;
4874 typeId = builder.makeStructResultType(typeId0, typeId0);
4875 consumedOperands = 2;
4877 case glslang::EOpSubBorrow:
4878 opCode = spv::OpISubBorrow;
4879 typeId = builder.makeStructResultType(typeId0, typeId0);
4880 consumedOperands = 2;
4882 case glslang::EOpUMulExtended:
4883 opCode = spv::OpUMulExtended;
4884 typeId = builder.makeStructResultType(typeId0, typeId0);
4885 consumedOperands = 2;
4887 case glslang::EOpIMulExtended:
4888 opCode = spv::OpSMulExtended;
4889 typeId = builder.makeStructResultType(typeId0, typeId0);
4890 consumedOperands = 2;
4892 case glslang::EOpBitfieldExtract:
4894 opCode = spv::OpBitFieldUExtract;
4896 opCode = spv::OpBitFieldSExtract;
4898 case glslang::EOpBitfieldInsert:
4899 opCode = spv::OpBitFieldInsert;
4902 case glslang::EOpFma:
4903 libCall = spv::GLSLstd450Fma;
4905 case glslang::EOpFrexp:
4907 libCall = spv::GLSLstd450FrexpStruct;
4908 assert(builder.isPointerType(typeId1));
4909 typeId1 = builder.getContainedTypeId(typeId1);
4910 #ifdef AMD_EXTENSIONS
4911 int width = builder.getScalarTypeWidth(typeId1);
4915 if (builder.getNumComponents(operands[0]) == 1)
4916 frexpIntType = builder.makeIntegerType(width, true);
4918 frexpIntType = builder.makeVectorType(builder.makeIntegerType(width, true), builder.getNumComponents(operands[0]));
4919 typeId = builder.makeStructResultType(typeId0, frexpIntType);
4920 consumedOperands = 1;
4923 case glslang::EOpLdexp:
4924 libCall = spv::GLSLstd450Ldexp;
4927 case glslang::EOpReadInvocation:
4928 return createInvocationsOperation(op, typeId, operands, typeProxy);
4930 #ifdef AMD_EXTENSIONS
4931 case glslang::EOpSwizzleInvocations:
4932 extBuiltins = getExtBuiltins(spv::E_SPV_AMD_shader_ballot);
4933 libCall = spv::SwizzleInvocationsAMD;
4935 case glslang::EOpSwizzleInvocationsMasked:
4936 extBuiltins = getExtBuiltins(spv::E_SPV_AMD_shader_ballot);
4937 libCall = spv::SwizzleInvocationsMaskedAMD;
4939 case glslang::EOpWriteInvocation:
4940 extBuiltins = getExtBuiltins(spv::E_SPV_AMD_shader_ballot);
4941 libCall = spv::WriteInvocationAMD;
4944 case glslang::EOpMin3:
4945 extBuiltins = getExtBuiltins(spv::E_SPV_AMD_shader_trinary_minmax);
4947 libCall = spv::FMin3AMD;
4950 libCall = spv::UMin3AMD;
4952 libCall = spv::SMin3AMD;
4955 case glslang::EOpMax3:
4956 extBuiltins = getExtBuiltins(spv::E_SPV_AMD_shader_trinary_minmax);
4958 libCall = spv::FMax3AMD;
4961 libCall = spv::UMax3AMD;
4963 libCall = spv::SMax3AMD;
4966 case glslang::EOpMid3:
4967 extBuiltins = getExtBuiltins(spv::E_SPV_AMD_shader_trinary_minmax);
4969 libCall = spv::FMid3AMD;
4972 libCall = spv::UMid3AMD;
4974 libCall = spv::SMid3AMD;
4978 case glslang::EOpInterpolateAtVertex:
4979 extBuiltins = getExtBuiltins(spv::E_SPV_AMD_shader_explicit_vertex_parameter);
4980 libCall = spv::InterpolateAtVertexAMD;
4990 // Use an extended instruction from the standard library.
4991 // Construct the call arguments, without modifying the original operands vector.
4992 // We might need the remaining arguments, e.g. in the EOpFrexp case.
4993 std::vector<spv::Id> callArguments(operands.begin(), operands.begin() + consumedOperands);
4994 id = builder.createBuiltinCall(typeId, extBuiltins >= 0 ? extBuiltins : stdBuiltins, libCall, callArguments);
4996 switch (consumedOperands) {
4998 // should all be handled by visitAggregate and createNoArgOperation
5002 // should all be handled by createUnaryOperation
5006 id = builder.createBinOp(opCode, typeId, operands[0], operands[1]);
5009 // anything 3 or over doesn't have l-value operands, so all should be consumed
5010 assert(consumedOperands == operands.size());
5011 id = builder.createOp(opCode, typeId, operands);
5016 // Decode the return types that were structures
5018 case glslang::EOpAddCarry:
5019 case glslang::EOpSubBorrow:
5020 builder.createStore(builder.createCompositeExtract(id, typeId0, 1), operands[2]);
5021 id = builder.createCompositeExtract(id, typeId0, 0);
5023 case glslang::EOpUMulExtended:
5024 case glslang::EOpIMulExtended:
5025 builder.createStore(builder.createCompositeExtract(id, typeId0, 0), operands[3]);
5026 builder.createStore(builder.createCompositeExtract(id, typeId0, 1), operands[2]);
5028 case glslang::EOpFrexp:
5030 assert(operands.size() == 2);
5031 if (builder.isFloatType(builder.getScalarTypeId(typeId1))) {
5032 // "exp" is floating-point type (from HLSL intrinsic)
5033 spv::Id member1 = builder.createCompositeExtract(id, frexpIntType, 1);
5034 member1 = builder.createUnaryOp(spv::OpConvertSToF, typeId1, member1);
5035 builder.createStore(member1, operands[1]);
5037 // "exp" is integer type (from GLSL built-in function)
5038 builder.createStore(builder.createCompositeExtract(id, frexpIntType, 1), operands[1]);
5039 id = builder.createCompositeExtract(id, typeId0, 0);
5046 return builder.setPrecision(id, precision);
5049 // Intrinsics with no arguments (or no return value, and no precision).
5050 spv::Id TGlslangToSpvTraverser::createNoArgOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId)
5052 // TODO: get the barrier operands correct
5055 case glslang::EOpEmitVertex:
5056 builder.createNoResultOp(spv::OpEmitVertex);
5058 case glslang::EOpEndPrimitive:
5059 builder.createNoResultOp(spv::OpEndPrimitive);
5061 case glslang::EOpBarrier:
5062 builder.createControlBarrier(spv::ScopeWorkgroup, spv::ScopeDevice, spv::MemorySemanticsMaskNone);
5064 case glslang::EOpMemoryBarrier:
5065 builder.createMemoryBarrier(spv::ScopeDevice, spv::MemorySemanticsAllMemory);
5067 case glslang::EOpMemoryBarrierAtomicCounter:
5068 builder.createMemoryBarrier(spv::ScopeDevice, spv::MemorySemanticsAtomicCounterMemoryMask);
5070 case glslang::EOpMemoryBarrierBuffer:
5071 builder.createMemoryBarrier(spv::ScopeDevice, spv::MemorySemanticsUniformMemoryMask);
5073 case glslang::EOpMemoryBarrierImage:
5074 builder.createMemoryBarrier(spv::ScopeDevice, spv::MemorySemanticsImageMemoryMask);
5076 case glslang::EOpMemoryBarrierShared:
5077 builder.createMemoryBarrier(spv::ScopeDevice, spv::MemorySemanticsWorkgroupMemoryMask);
5079 case glslang::EOpGroupMemoryBarrier:
5080 builder.createMemoryBarrier(spv::ScopeDevice, spv::MemorySemanticsCrossWorkgroupMemoryMask);
5082 case glslang::EOpAllMemoryBarrierWithGroupSync:
5083 // Control barrier with non-"None" semantic is also a memory barrier.
5084 builder.createControlBarrier(spv::ScopeDevice, spv::ScopeDevice, spv::MemorySemanticsAllMemory);
5086 case glslang::EOpGroupMemoryBarrierWithGroupSync:
5087 // Control barrier with non-"None" semantic is also a memory barrier.
5088 builder.createControlBarrier(spv::ScopeDevice, spv::ScopeDevice, spv::MemorySemanticsCrossWorkgroupMemoryMask);
5090 case glslang::EOpWorkgroupMemoryBarrier:
5091 builder.createMemoryBarrier(spv::ScopeWorkgroup, spv::MemorySemanticsWorkgroupMemoryMask);
5093 case glslang::EOpWorkgroupMemoryBarrierWithGroupSync:
5094 // Control barrier with non-"None" semantic is also a memory barrier.
5095 builder.createControlBarrier(spv::ScopeWorkgroup, spv::ScopeWorkgroup, spv::MemorySemanticsWorkgroupMemoryMask);
5097 #ifdef AMD_EXTENSIONS
5098 case glslang::EOpTime:
5100 std::vector<spv::Id> args; // Dummy arguments
5101 spv::Id id = builder.createBuiltinCall(typeId, getExtBuiltins(spv::E_SPV_AMD_gcn_shader), spv::TimeAMD, args);
5102 return builder.setPrecision(id, precision);
5106 logger->missingFunctionality("unknown operation with no arguments");
5111 spv::Id TGlslangToSpvTraverser::getSymbolId(const glslang::TIntermSymbol* symbol)
5113 auto iter = symbolValues.find(symbol->getId());
5115 if (symbolValues.end() != iter) {
5120 // it was not found, create it
5121 id = createSpvVariable(symbol);
5122 symbolValues[symbol->getId()] = id;
5124 if (symbol->getBasicType() != glslang::EbtBlock) {
5125 addDecoration(id, TranslatePrecisionDecoration(symbol->getType()));
5126 addDecoration(id, TranslateInterpolationDecoration(symbol->getType().getQualifier()));
5127 addDecoration(id, TranslateAuxiliaryStorageDecoration(symbol->getType().getQualifier()));
5128 if (symbol->getType().getQualifier().hasSpecConstantId())
5129 addDecoration(id, spv::DecorationSpecId, symbol->getType().getQualifier().layoutSpecConstantId);
5130 if (symbol->getQualifier().hasIndex())
5131 builder.addDecoration(id, spv::DecorationIndex, symbol->getQualifier().layoutIndex);
5132 if (symbol->getQualifier().hasComponent())
5133 builder.addDecoration(id, spv::DecorationComponent, symbol->getQualifier().layoutComponent);
5134 if (glslangIntermediate->getXfbMode()) {
5135 builder.addCapability(spv::CapabilityTransformFeedback);
5136 if (symbol->getQualifier().hasXfbStride())
5137 builder.addDecoration(id, spv::DecorationXfbStride, symbol->getQualifier().layoutXfbStride);
5138 if (symbol->getQualifier().hasXfbBuffer())
5139 builder.addDecoration(id, spv::DecorationXfbBuffer, symbol->getQualifier().layoutXfbBuffer);
5140 if (symbol->getQualifier().hasXfbOffset())
5141 builder.addDecoration(id, spv::DecorationOffset, symbol->getQualifier().layoutXfbOffset);
5143 // atomic counters use this:
5144 if (symbol->getQualifier().hasOffset())
5145 builder.addDecoration(id, spv::DecorationOffset, symbol->getQualifier().layoutOffset);
5148 if (symbol->getQualifier().hasLocation())
5149 builder.addDecoration(id, spv::DecorationLocation, symbol->getQualifier().layoutLocation);
5150 addDecoration(id, TranslateInvariantDecoration(symbol->getType().getQualifier()));
5151 if (symbol->getQualifier().hasStream() && glslangIntermediate->isMultiStream()) {
5152 builder.addCapability(spv::CapabilityGeometryStreams);
5153 builder.addDecoration(id, spv::DecorationStream, symbol->getQualifier().layoutStream);
5155 if (symbol->getQualifier().hasSet())
5156 builder.addDecoration(id, spv::DecorationDescriptorSet, symbol->getQualifier().layoutSet);
5157 else if (IsDescriptorResource(symbol->getType())) {
5159 builder.addDecoration(id, spv::DecorationDescriptorSet, 0);
5161 if (symbol->getQualifier().hasBinding())
5162 builder.addDecoration(id, spv::DecorationBinding, symbol->getQualifier().layoutBinding);
5163 if (symbol->getQualifier().hasAttachment())
5164 builder.addDecoration(id, spv::DecorationInputAttachmentIndex, symbol->getQualifier().layoutAttachment);
5165 if (glslangIntermediate->getXfbMode()) {
5166 builder.addCapability(spv::CapabilityTransformFeedback);
5167 if (symbol->getQualifier().hasXfbStride())
5168 builder.addDecoration(id, spv::DecorationXfbStride, symbol->getQualifier().layoutXfbStride);
5169 if (symbol->getQualifier().hasXfbBuffer())
5170 builder.addDecoration(id, spv::DecorationXfbBuffer, symbol->getQualifier().layoutXfbBuffer);
5173 if (symbol->getType().isImage()) {
5174 std::vector<spv::Decoration> memory;
5175 TranslateMemoryDecoration(symbol->getType().getQualifier(), memory);
5176 for (unsigned int i = 0; i < memory.size(); ++i)
5177 addDecoration(id, memory[i]);
5180 // built-in variable decorations
5181 spv::BuiltIn builtIn = TranslateBuiltInDecoration(symbol->getQualifier().builtIn, false);
5182 if (builtIn != spv::BuiltInMax)
5183 addDecoration(id, spv::DecorationBuiltIn, (int)builtIn);
5185 #ifdef NV_EXTENSIONS
5186 if (builtIn == spv::BuiltInSampleMask) {
5187 spv::Decoration decoration;
5188 // GL_NV_sample_mask_override_coverage extension
5189 if (glslangIntermediate->getLayoutOverrideCoverage())
5190 decoration = (spv::Decoration)spv::DecorationOverrideCoverageNV;
5192 decoration = (spv::Decoration)spv::DecorationMax;
5193 addDecoration(id, decoration);
5194 if (decoration != spv::DecorationMax) {
5195 builder.addExtension(spv::E_SPV_NV_sample_mask_override_coverage);
5198 else if (builtIn == spv::BuiltInLayer) {
5199 // SPV_NV_viewport_array2 extension
5200 if (symbol->getQualifier().layoutViewportRelative)
5202 addDecoration(id, (spv::Decoration)spv::DecorationViewportRelativeNV);
5203 builder.addCapability(spv::CapabilityShaderViewportMaskNV);
5204 builder.addExtension(spv::E_SPV_NV_viewport_array2);
5206 if(symbol->getQualifier().layoutSecondaryViewportRelativeOffset != -2048)
5208 addDecoration(id, (spv::Decoration)spv::DecorationSecondaryViewportRelativeNV, symbol->getQualifier().layoutSecondaryViewportRelativeOffset);
5209 builder.addCapability(spv::CapabilityShaderStereoViewNV);
5210 builder.addExtension(spv::E_SPV_NV_stereo_view_rendering);
5214 if (symbol->getQualifier().layoutPassthrough) {
5215 addDecoration(id, spv::DecorationPassthroughNV);
5216 builder.addCapability(spv::CapabilityGeometryShaderPassthroughNV);
5217 builder.addExtension(spv::E_SPV_NV_geometry_shader_passthrough);
5224 // If 'dec' is valid, add no-operand decoration to an object
5225 void TGlslangToSpvTraverser::addDecoration(spv::Id id, spv::Decoration dec)
5227 if (dec != spv::DecorationMax)
5228 builder.addDecoration(id, dec);
5231 // If 'dec' is valid, add a one-operand decoration to an object
5232 void TGlslangToSpvTraverser::addDecoration(spv::Id id, spv::Decoration dec, unsigned value)
5234 if (dec != spv::DecorationMax)
5235 builder.addDecoration(id, dec, value);
5238 // If 'dec' is valid, add a no-operand decoration to a struct member
5239 void TGlslangToSpvTraverser::addMemberDecoration(spv::Id id, int member, spv::Decoration dec)
5241 if (dec != spv::DecorationMax)
5242 builder.addMemberDecoration(id, (unsigned)member, dec);
5245 // If 'dec' is valid, add a one-operand decoration to a struct member
5246 void TGlslangToSpvTraverser::addMemberDecoration(spv::Id id, int member, spv::Decoration dec, unsigned value)
5248 if (dec != spv::DecorationMax)
5249 builder.addMemberDecoration(id, (unsigned)member, dec, value);
5252 // Make a full tree of instructions to build a SPIR-V specialization constant,
5253 // or regular constant if possible.
5255 // TBD: this is not yet done, nor verified to be the best design, it does do the leaf symbols though
5257 // Recursively walk the nodes. The nodes form a tree whose leaves are
5258 // regular constants, which themselves are trees that createSpvConstant()
5259 // recursively walks. So, this function walks the "top" of the tree:
5260 // - emit specialization constant-building instructions for specConstant
5261 // - when running into a non-spec-constant, switch to createSpvConstant()
5262 spv::Id TGlslangToSpvTraverser::createSpvConstant(const glslang::TIntermTyped& node)
5264 assert(node.getQualifier().isConstant());
5266 // Handle front-end constants first (non-specialization constants).
5267 if (! node.getQualifier().specConstant) {
5268 // hand off to the non-spec-constant path
5269 assert(node.getAsConstantUnion() != nullptr || node.getAsSymbolNode() != nullptr);
5271 return createSpvConstantFromConstUnionArray(node.getType(), node.getAsConstantUnion() ? node.getAsConstantUnion()->getConstArray() : node.getAsSymbolNode()->getConstArray(),
5275 // We now know we have a specialization constant to build
5277 // gl_WorkGroupSize is a special case until the front-end handles hierarchical specialization constants,
5278 // even then, it's specialization ids are handled by special case syntax in GLSL: layout(local_size_x = ...
5279 if (node.getType().getQualifier().builtIn == glslang::EbvWorkGroupSize) {
5280 std::vector<spv::Id> dimConstId;
5281 for (int dim = 0; dim < 3; ++dim) {
5282 bool specConst = (glslangIntermediate->getLocalSizeSpecId(dim) != glslang::TQualifier::layoutNotSet);
5283 dimConstId.push_back(builder.makeUintConstant(glslangIntermediate->getLocalSize(dim), specConst));
5285 addDecoration(dimConstId.back(), spv::DecorationSpecId, glslangIntermediate->getLocalSizeSpecId(dim));
5287 return builder.makeCompositeConstant(builder.makeVectorType(builder.makeUintType(32), 3), dimConstId, true);
5290 // An AST node labelled as specialization constant should be a symbol node.
5291 // Its initializer should either be a sub tree with constant nodes, or a constant union array.
5292 if (auto* sn = node.getAsSymbolNode()) {
5293 if (auto* sub_tree = sn->getConstSubtree()) {
5294 // Traverse the constant constructor sub tree like generating normal run-time instructions.
5295 // During the AST traversal, if the node is marked as 'specConstant', SpecConstantOpModeGuard
5296 // will set the builder into spec constant op instruction generating mode.
5297 sub_tree->traverse(this);
5298 return accessChainLoad(sub_tree->getType());
5299 } else if (auto* const_union_array = &sn->getConstArray()){
5301 spv::Id id = createSpvConstantFromConstUnionArray(sn->getType(), *const_union_array, nextConst, true);
5302 builder.addName(id, sn->getName().c_str());
5307 // Neither a front-end constant node, nor a specialization constant node with constant union array or
5308 // constant sub tree as initializer.
5309 logger->missingFunctionality("Neither a front-end constant nor a spec constant.");
5311 return spv::NoResult;
5314 // Use 'consts' as the flattened glslang source of scalar constants to recursively
5315 // build the aggregate SPIR-V constant.
5317 // If there are not enough elements present in 'consts', 0 will be substituted;
5318 // an empty 'consts' can be used to create a fully zeroed SPIR-V constant.
5320 spv::Id TGlslangToSpvTraverser::createSpvConstantFromConstUnionArray(const glslang::TType& glslangType, const glslang::TConstUnionArray& consts, int& nextConst, bool specConstant)
5322 // vector of constants for SPIR-V
5323 std::vector<spv::Id> spvConsts;
5325 // Type is used for struct and array constants
5326 spv::Id typeId = convertGlslangToSpvType(glslangType);
5328 if (glslangType.isArray()) {
5329 glslang::TType elementType(glslangType, 0);
5330 for (int i = 0; i < glslangType.getOuterArraySize(); ++i)
5331 spvConsts.push_back(createSpvConstantFromConstUnionArray(elementType, consts, nextConst, false));
5332 } else if (glslangType.isMatrix()) {
5333 glslang::TType vectorType(glslangType, 0);
5334 for (int col = 0; col < glslangType.getMatrixCols(); ++col)
5335 spvConsts.push_back(createSpvConstantFromConstUnionArray(vectorType, consts, nextConst, false));
5336 } else if (glslangType.getStruct()) {
5337 glslang::TVector<glslang::TTypeLoc>::const_iterator iter;
5338 for (iter = glslangType.getStruct()->begin(); iter != glslangType.getStruct()->end(); ++iter)
5339 spvConsts.push_back(createSpvConstantFromConstUnionArray(*iter->type, consts, nextConst, false));
5340 } else if (glslangType.getVectorSize() > 1) {
5341 for (unsigned int i = 0; i < (unsigned int)glslangType.getVectorSize(); ++i) {
5342 bool zero = nextConst >= consts.size();
5343 switch (glslangType.getBasicType()) {
5344 case glslang::EbtInt:
5345 spvConsts.push_back(builder.makeIntConstant(zero ? 0 : consts[nextConst].getIConst()));
5347 case glslang::EbtUint:
5348 spvConsts.push_back(builder.makeUintConstant(zero ? 0 : consts[nextConst].getUConst()));
5350 case glslang::EbtInt64:
5351 spvConsts.push_back(builder.makeInt64Constant(zero ? 0 : consts[nextConst].getI64Const()));
5353 case glslang::EbtUint64:
5354 spvConsts.push_back(builder.makeUint64Constant(zero ? 0 : consts[nextConst].getU64Const()));
5356 case glslang::EbtFloat:
5357 spvConsts.push_back(builder.makeFloatConstant(zero ? 0.0F : (float)consts[nextConst].getDConst()));
5359 case glslang::EbtDouble:
5360 spvConsts.push_back(builder.makeDoubleConstant(zero ? 0.0 : consts[nextConst].getDConst()));
5362 #ifdef AMD_EXTENSIONS
5363 case glslang::EbtFloat16:
5364 spvConsts.push_back(builder.makeFloat16Constant(zero ? 0.0F : (float)consts[nextConst].getDConst()));
5367 case glslang::EbtBool:
5368 spvConsts.push_back(builder.makeBoolConstant(zero ? false : consts[nextConst].getBConst()));
5377 // we have a non-aggregate (scalar) constant
5378 bool zero = nextConst >= consts.size();
5380 switch (glslangType.getBasicType()) {
5381 case glslang::EbtInt:
5382 scalar = builder.makeIntConstant(zero ? 0 : consts[nextConst].getIConst(), specConstant);
5384 case glslang::EbtUint:
5385 scalar = builder.makeUintConstant(zero ? 0 : consts[nextConst].getUConst(), specConstant);
5387 case glslang::EbtInt64:
5388 scalar = builder.makeInt64Constant(zero ? 0 : consts[nextConst].getI64Const(), specConstant);
5390 case glslang::EbtUint64:
5391 scalar = builder.makeUint64Constant(zero ? 0 : consts[nextConst].getU64Const(), specConstant);
5393 case glslang::EbtFloat:
5394 scalar = builder.makeFloatConstant(zero ? 0.0F : (float)consts[nextConst].getDConst(), specConstant);
5396 case glslang::EbtDouble:
5397 scalar = builder.makeDoubleConstant(zero ? 0.0 : consts[nextConst].getDConst(), specConstant);
5399 #ifdef AMD_EXTENSIONS
5400 case glslang::EbtFloat16:
5401 scalar = builder.makeFloat16Constant(zero ? 0.0F : (float)consts[nextConst].getDConst(), specConstant);
5404 case glslang::EbtBool:
5405 scalar = builder.makeBoolConstant(zero ? false : consts[nextConst].getBConst(), specConstant);
5415 return builder.makeCompositeConstant(typeId, spvConsts);
5418 // Return true if the node is a constant or symbol whose reading has no
5419 // non-trivial observable cost or effect.
5420 bool TGlslangToSpvTraverser::isTrivialLeaf(const glslang::TIntermTyped* node)
5422 // don't know what this is
5423 if (node == nullptr)
5426 // a constant is safe
5427 if (node->getAsConstantUnion() != nullptr)
5430 // not a symbol means non-trivial
5431 if (node->getAsSymbolNode() == nullptr)
5434 // a symbol, depends on what's being read
5435 switch (node->getType().getQualifier().storage) {
5436 case glslang::EvqTemporary:
5437 case glslang::EvqGlobal:
5438 case glslang::EvqIn:
5439 case glslang::EvqInOut:
5440 case glslang::EvqConst:
5441 case glslang::EvqConstReadOnly:
5442 case glslang::EvqUniform:
5449 // A node is trivial if it is a single operation with no side effects.
5450 // HLSL (and/or vectors) are always trivial, as it does not short circuit.
5451 // Otherwise, error on the side of saying non-trivial.
5452 // Return true if trivial.
5453 bool TGlslangToSpvTraverser::isTrivial(const glslang::TIntermTyped* node)
5455 if (node == nullptr)
5458 // count non scalars as trivial, as well as anything coming from HLSL
5459 if (! node->getType().isScalarOrVec1() || glslangIntermediate->getSource() == glslang::EShSourceHlsl)
5462 // symbols and constants are trivial
5463 if (isTrivialLeaf(node))
5466 // otherwise, it needs to be a simple operation or one or two leaf nodes
5468 // not a simple operation
5469 const glslang::TIntermBinary* binaryNode = node->getAsBinaryNode();
5470 const glslang::TIntermUnary* unaryNode = node->getAsUnaryNode();
5471 if (binaryNode == nullptr && unaryNode == nullptr)
5474 // not on leaf nodes
5475 if (binaryNode && (! isTrivialLeaf(binaryNode->getLeft()) || ! isTrivialLeaf(binaryNode->getRight())))
5478 if (unaryNode && ! isTrivialLeaf(unaryNode->getOperand())) {
5482 switch (node->getAsOperator()->getOp()) {
5483 case glslang::EOpLogicalNot:
5484 case glslang::EOpConvIntToBool:
5485 case glslang::EOpConvUintToBool:
5486 case glslang::EOpConvFloatToBool:
5487 case glslang::EOpConvDoubleToBool:
5488 case glslang::EOpEqual:
5489 case glslang::EOpNotEqual:
5490 case glslang::EOpLessThan:
5491 case glslang::EOpGreaterThan:
5492 case glslang::EOpLessThanEqual:
5493 case glslang::EOpGreaterThanEqual:
5494 case glslang::EOpIndexDirect:
5495 case glslang::EOpIndexDirectStruct:
5496 case glslang::EOpLogicalXor:
5497 case glslang::EOpAny:
5498 case glslang::EOpAll:
5505 // Emit short-circuiting code, where 'right' is never evaluated unless
5506 // the left side is true (for &&) or false (for ||).
5507 spv::Id TGlslangToSpvTraverser::createShortCircuit(glslang::TOperator op, glslang::TIntermTyped& left, glslang::TIntermTyped& right)
5509 spv::Id boolTypeId = builder.makeBoolType();
5511 // emit left operand
5512 builder.clearAccessChain();
5513 left.traverse(this);
5514 spv::Id leftId = accessChainLoad(left.getType());
5516 // Operands to accumulate OpPhi operands
5517 std::vector<spv::Id> phiOperands;
5518 // accumulate left operand's phi information
5519 phiOperands.push_back(leftId);
5520 phiOperands.push_back(builder.getBuildPoint()->getId());
5522 // Make the two kinds of operation symmetric with a "!"
5523 // || => emit "if (! left) result = right"
5524 // && => emit "if ( left) result = right"
5526 // TODO: this runtime "not" for || could be avoided by adding functionality
5527 // to 'builder' to have an "else" without an "then"
5528 if (op == glslang::EOpLogicalOr)
5529 leftId = builder.createUnaryOp(spv::OpLogicalNot, boolTypeId, leftId);
5531 // make an "if" based on the left value
5532 spv::Builder::If ifBuilder(leftId, builder);
5534 // emit right operand as the "then" part of the "if"
5535 builder.clearAccessChain();
5536 right.traverse(this);
5537 spv::Id rightId = accessChainLoad(right.getType());
5539 // accumulate left operand's phi information
5540 phiOperands.push_back(rightId);
5541 phiOperands.push_back(builder.getBuildPoint()->getId());
5544 ifBuilder.makeEndIf();
5546 // phi together the two results
5547 return builder.createOp(spv::OpPhi, boolTypeId, phiOperands);
5550 // Return type Id of the imported set of extended instructions corresponds to the name.
5551 // Import this set if it has not been imported yet.
5552 spv::Id TGlslangToSpvTraverser::getExtBuiltins(const char* name)
5554 if (extBuiltinMap.find(name) != extBuiltinMap.end())
5555 return extBuiltinMap[name];
5557 builder.addExtension(name);
5558 spv::Id extBuiltins = builder.import(name);
5559 extBuiltinMap[name] = extBuiltins;
5564 }; // end anonymous namespace
5568 void GetSpirvVersion(std::string& version)
5570 const int bufSize = 100;
5572 snprintf(buf, bufSize, "0x%08x, Revision %d", spv::Version, spv::Revision);
5576 // Write SPIR-V out to a binary file
5577 void OutputSpvBin(const std::vector<unsigned int>& spirv, const char* baseName)
5580 out.open(baseName, std::ios::binary | std::ios::out);
5582 printf("ERROR: Failed to open file: %s\n", baseName);
5583 for (int i = 0; i < (int)spirv.size(); ++i) {
5584 unsigned int word = spirv[i];
5585 out.write((const char*)&word, 4);
5590 // Write SPIR-V out to a text file with 32-bit hexadecimal words
5591 void OutputSpvHex(const std::vector<unsigned int>& spirv, const char* baseName, const char* varName)
5594 out.open(baseName, std::ios::binary | std::ios::out);
5596 printf("ERROR: Failed to open file: %s\n", baseName);
5597 out << "\t// " GLSLANG_REVISION " " GLSLANG_DATE << std::endl;
5598 if (varName != nullptr) {
5599 out << "\t #pragma once" << std::endl;
5600 out << "const uint32_t " << varName << "[] = {" << std::endl;
5602 const int WORDS_PER_LINE = 8;
5603 for (int i = 0; i < (int)spirv.size(); i += WORDS_PER_LINE) {
5605 for (int j = 0; j < WORDS_PER_LINE && i + j < (int)spirv.size(); ++j) {
5606 const unsigned int word = spirv[i + j];
5607 out << "0x" << std::hex << std::setw(8) << std::setfill('0') << word;
5608 if (i + j + 1 < (int)spirv.size()) {
5614 if (varName != nullptr) {
5621 // Set up the glslang traversal
5623 void GlslangToSpv(const glslang::TIntermediate& intermediate, std::vector<unsigned int>& spirv, SpvOptions* options)
5625 spv::SpvBuildLogger logger;
5626 GlslangToSpv(intermediate, spirv, &logger, options);
5629 void GlslangToSpv(const glslang::TIntermediate& intermediate, std::vector<unsigned int>& spirv,
5630 spv::SpvBuildLogger* logger, SpvOptions* options)
5632 TIntermNode* root = intermediate.getTreeRoot();
5637 glslang::SpvOptions defaultOptions;
5638 if (options == nullptr)
5639 options = &defaultOptions;
5641 glslang::GetThreadPoolAllocator().push();
5643 TGlslangToSpvTraverser it(&intermediate, logger, *options);
5644 root->traverse(&it);
5648 glslang::GetThreadPoolAllocator().pop();
5651 }; // end namespace glslang