2 // Copyright (C) 2014-2016 LunarG, Inc.
3 // Copyright (C) 2015-2016 Google, Inc.
5 // All rights reserved.
7 // Redistribution and use in source and binary forms, with or without
8 // modification, are permitted provided that the following conditions
11 // Redistributions of source code must retain the above copyright
12 // notice, this list of conditions and the following disclaimer.
14 // Redistributions in binary form must reproduce the above
15 // copyright notice, this list of conditions and the following
16 // disclaimer in the documentation and/or other materials provided
17 // with the distribution.
19 // Neither the name of 3Dlabs Inc. Ltd. nor the names of its
20 // contributors may be used to endorse or promote products derived
21 // from this software without specific prior written permission.
23 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
26 // FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
27 // COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
28 // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
29 // BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
30 // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
31 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
33 // ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 // POSSIBILITY OF SUCH DAMAGE.
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);
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::Id createSpvVariable(const glslang::TIntermSymbol*);
126 spv::Id getSampledType(const glslang::TSampler&);
127 spv::Id getInvertedSwizzleType(const glslang::TIntermTyped&);
128 spv::Id createInvertedSwizzle(spv::Decoration precision, const glslang::TIntermTyped&, spv::Id parentResult);
129 void convertSwizzle(const glslang::TIntermAggregate&, std::vector<unsigned>& swizzle);
130 spv::Id convertGlslangToSpvType(const glslang::TType& type);
131 spv::Id convertGlslangToSpvType(const glslang::TType& type, glslang::TLayoutPacking, const glslang::TQualifier&);
132 bool filterMember(const glslang::TType& member);
133 spv::Id convertGlslangStructToSpvType(const glslang::TType&, const glslang::TTypeList* glslangStruct,
134 glslang::TLayoutPacking, const glslang::TQualifier&);
135 void decorateStructType(const glslang::TType&, const glslang::TTypeList* glslangStruct, glslang::TLayoutPacking,
136 const glslang::TQualifier&, spv::Id);
137 spv::Id makeArraySizeId(const glslang::TArraySizes&, int dim);
138 spv::Id accessChainLoad(const glslang::TType& type);
139 void accessChainStore(const glslang::TType& type, spv::Id rvalue);
140 void multiTypeStore(const glslang::TType&, spv::Id rValue);
141 glslang::TLayoutPacking getExplicitLayout(const glslang::TType& type) const;
142 int getArrayStride(const glslang::TType& arrayType, glslang::TLayoutPacking, glslang::TLayoutMatrix);
143 int getMatrixStride(const glslang::TType& matrixType, glslang::TLayoutPacking, glslang::TLayoutMatrix);
144 void updateMemberOffset(const glslang::TType& structType, const glslang::TType& memberType, int& currentOffset, int& nextOffset, glslang::TLayoutPacking, glslang::TLayoutMatrix);
145 void declareUseOfStructMember(const glslang::TTypeList& members, int glslangMember);
147 bool isShaderEntryPoint(const glslang::TIntermAggregate* node);
148 void makeFunctions(const glslang::TIntermSequence&);
149 void makeGlobalInitializers(const glslang::TIntermSequence&);
150 void visitFunctions(const glslang::TIntermSequence&);
151 void handleFunctionEntry(const glslang::TIntermAggregate* node);
152 void translateArguments(const glslang::TIntermAggregate& node, std::vector<spv::Id>& arguments);
153 void translateArguments(glslang::TIntermUnary& node, std::vector<spv::Id>& arguments);
154 spv::Id createImageTextureFunctionCall(glslang::TIntermOperator* node);
155 spv::Id handleUserFunctionCall(const glslang::TIntermAggregate*);
157 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);
158 spv::Id createBinaryMatrixOperation(spv::Op, spv::Decoration precision, spv::Decoration noContraction, spv::Id typeId, spv::Id left, spv::Id right);
159 spv::Id createUnaryOperation(glslang::TOperator op, spv::Decoration precision, spv::Decoration noContraction, spv::Id typeId, spv::Id operand,glslang::TBasicType typeProxy);
160 spv::Id createUnaryMatrixOperation(spv::Op op, spv::Decoration precision, spv::Decoration noContraction, spv::Id typeId, spv::Id operand,glslang::TBasicType typeProxy);
161 spv::Id createConversion(glslang::TOperator op, spv::Decoration precision, spv::Decoration noContraction, spv::Id destTypeId, spv::Id operand, glslang::TBasicType typeProxy);
162 spv::Id makeSmearedConstant(spv::Id constant, int vectorSize);
163 spv::Id createAtomicOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId, std::vector<spv::Id>& operands, glslang::TBasicType typeProxy);
164 spv::Id createInvocationsOperation(glslang::TOperator op, spv::Id typeId, std::vector<spv::Id>& operands, glslang::TBasicType typeProxy);
165 spv::Id CreateInvocationsVectorOperation(spv::Op op, spv::GroupOperation groupOperation, spv::Id typeId, std::vector<spv::Id>& operands);
166 spv::Id createMiscOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId, std::vector<spv::Id>& operands, glslang::TBasicType typeProxy);
167 spv::Id createNoArgOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId);
168 spv::Id getSymbolId(const glslang::TIntermSymbol* node);
169 void addDecoration(spv::Id id, spv::Decoration dec);
170 void addDecoration(spv::Id id, spv::Decoration dec, unsigned value);
171 void addMemberDecoration(spv::Id id, int member, spv::Decoration dec);
172 void addMemberDecoration(spv::Id id, int member, spv::Decoration dec, unsigned value);
173 spv::Id createSpvConstant(const glslang::TIntermTyped&);
174 spv::Id createSpvConstantFromConstUnionArray(const glslang::TType& type, const glslang::TConstUnionArray&, int& nextConst, bool specConstant);
175 bool isTrivialLeaf(const glslang::TIntermTyped* node);
176 bool isTrivial(const glslang::TIntermTyped* node);
177 spv::Id createShortCircuit(glslang::TOperator, glslang::TIntermTyped& left, glslang::TIntermTyped& right);
178 spv::Id getExtBuiltins(const char* name);
180 spv::Function* shaderEntry;
181 spv::Function* currentFunction;
182 spv::Instruction* entryPoint;
185 spv::SpvBuildLogger* logger;
187 // There is a 1:1 mapping between a spv builder and a module; this is thread safe
188 spv::Builder builder;
190 bool entryPointTerminated;
191 bool linkageOnly; // true when visiting the set of objects in the AST present only for establishing interface, whether or not they were statically used
192 std::set<spv::Id> iOSet; // all input/output variables from either static use or declaration of interface
193 const glslang::TIntermediate* glslangIntermediate;
195 std::unordered_map<const char*, spv::Id> extBuiltinMap;
197 std::unordered_map<int, spv::Id> symbolValues;
198 std::unordered_set<int> rValueParameters; // set of formal function parameters passed as rValues, rather than a pointer
199 std::unordered_map<std::string, spv::Function*> functionMap;
200 std::unordered_map<const glslang::TTypeList*, spv::Id> structMap[glslang::ElpCount][glslang::ElmCount];
201 std::unordered_map<const glslang::TTypeList*, std::vector<int> > memberRemapper; // for mapping glslang block indices to spv indices (e.g., due to hidden members)
202 std::stack<bool> breakForLoop; // false means break for switch
206 // Helper functions for translating glslang representations to SPIR-V enumerants.
209 // Translate glslang profile to SPIR-V source language.
210 spv::SourceLanguage TranslateSourceLanguage(glslang::EShSource source, EProfile profile)
213 case glslang::EShSourceGlsl:
217 case ECompatibilityProfile:
218 return spv::SourceLanguageGLSL;
220 return spv::SourceLanguageESSL;
222 return spv::SourceLanguageUnknown;
224 case glslang::EShSourceHlsl:
225 // Use SourceLanguageUnknown instead of SourceLanguageHLSL for now, until Vulkan knows what HLSL is
226 return spv::SourceLanguageUnknown;
228 return spv::SourceLanguageUnknown;
232 // Translate glslang language (stage) to SPIR-V execution model.
233 spv::ExecutionModel TranslateExecutionModel(EShLanguage stage)
236 case EShLangVertex: return spv::ExecutionModelVertex;
237 case EShLangTessControl: return spv::ExecutionModelTessellationControl;
238 case EShLangTessEvaluation: return spv::ExecutionModelTessellationEvaluation;
239 case EShLangGeometry: return spv::ExecutionModelGeometry;
240 case EShLangFragment: return spv::ExecutionModelFragment;
241 case EShLangCompute: return spv::ExecutionModelGLCompute;
244 return spv::ExecutionModelFragment;
248 // Translate glslang type to SPIR-V storage class.
249 spv::StorageClass TranslateStorageClass(const glslang::TType& type)
251 if (type.getQualifier().isPipeInput())
252 return spv::StorageClassInput;
253 else if (type.getQualifier().isPipeOutput())
254 return spv::StorageClassOutput;
255 else if (type.getBasicType() == glslang::EbtAtomicUint)
256 return spv::StorageClassAtomicCounter;
257 else if (type.containsOpaque())
258 return spv::StorageClassUniformConstant;
259 else if (type.getQualifier().isUniformOrBuffer()) {
260 if (type.getQualifier().layoutPushConstant)
261 return spv::StorageClassPushConstant;
262 if (type.getBasicType() == glslang::EbtBlock)
263 return spv::StorageClassUniform;
265 return spv::StorageClassUniformConstant;
267 switch (type.getQualifier().storage) {
268 case glslang::EvqShared: return spv::StorageClassWorkgroup; break;
269 case glslang::EvqGlobal: return spv::StorageClassPrivate;
270 case glslang::EvqConstReadOnly: return spv::StorageClassFunction;
271 case glslang::EvqTemporary: return spv::StorageClassFunction;
274 return spv::StorageClassFunction;
279 // Translate glslang sampler type to SPIR-V dimensionality.
280 spv::Dim TranslateDimensionality(const glslang::TSampler& sampler)
282 switch (sampler.dim) {
283 case glslang::Esd1D: return spv::Dim1D;
284 case glslang::Esd2D: return spv::Dim2D;
285 case glslang::Esd3D: return spv::Dim3D;
286 case glslang::EsdCube: return spv::DimCube;
287 case glslang::EsdRect: return spv::DimRect;
288 case glslang::EsdBuffer: return spv::DimBuffer;
289 case glslang::EsdSubpass: return spv::DimSubpassData;
296 // Translate glslang precision to SPIR-V precision decorations.
297 spv::Decoration TranslatePrecisionDecoration(glslang::TPrecisionQualifier glslangPrecision)
299 switch (glslangPrecision) {
300 case glslang::EpqLow: return spv::DecorationRelaxedPrecision;
301 case glslang::EpqMedium: return spv::DecorationRelaxedPrecision;
303 return spv::NoPrecision;
307 // Translate glslang type to SPIR-V precision decorations.
308 spv::Decoration TranslatePrecisionDecoration(const glslang::TType& type)
310 return TranslatePrecisionDecoration(type.getQualifier().precision);
313 // Translate glslang type to SPIR-V block decorations.
314 spv::Decoration TranslateBlockDecoration(const glslang::TType& type)
316 if (type.getBasicType() == glslang::EbtBlock) {
317 switch (type.getQualifier().storage) {
318 case glslang::EvqUniform: return spv::DecorationBlock;
319 case glslang::EvqBuffer: return spv::DecorationBufferBlock;
320 case glslang::EvqVaryingIn: return spv::DecorationBlock;
321 case glslang::EvqVaryingOut: return spv::DecorationBlock;
328 return spv::DecorationMax;
331 // Translate glslang type to SPIR-V memory decorations.
332 void TranslateMemoryDecoration(const glslang::TQualifier& qualifier, std::vector<spv::Decoration>& memory)
334 if (qualifier.coherent)
335 memory.push_back(spv::DecorationCoherent);
336 if (qualifier.volatil)
337 memory.push_back(spv::DecorationVolatile);
338 if (qualifier.restrict)
339 memory.push_back(spv::DecorationRestrict);
340 if (qualifier.readonly)
341 memory.push_back(spv::DecorationNonWritable);
342 if (qualifier.writeonly)
343 memory.push_back(spv::DecorationNonReadable);
346 // Translate glslang type to SPIR-V layout decorations.
347 spv::Decoration TranslateLayoutDecoration(const glslang::TType& type, glslang::TLayoutMatrix matrixLayout)
349 if (type.isMatrix()) {
350 switch (matrixLayout) {
351 case glslang::ElmRowMajor:
352 return spv::DecorationRowMajor;
353 case glslang::ElmColumnMajor:
354 return spv::DecorationColMajor;
356 // opaque layouts don't need a majorness
357 return spv::DecorationMax;
360 switch (type.getBasicType()) {
362 return spv::DecorationMax;
364 case glslang::EbtBlock:
365 switch (type.getQualifier().storage) {
366 case glslang::EvqUniform:
367 case glslang::EvqBuffer:
368 switch (type.getQualifier().layoutPacking) {
369 case glslang::ElpShared: return spv::DecorationGLSLShared;
370 case glslang::ElpPacked: return spv::DecorationGLSLPacked;
372 return spv::DecorationMax;
374 case glslang::EvqVaryingIn:
375 case glslang::EvqVaryingOut:
376 assert(type.getQualifier().layoutPacking == glslang::ElpNone);
377 return spv::DecorationMax;
380 return spv::DecorationMax;
386 // Translate glslang type to SPIR-V interpolation decorations.
387 // Returns spv::DecorationMax when no decoration
388 // should be applied.
389 spv::Decoration TGlslangToSpvTraverser::TranslateInterpolationDecoration(const glslang::TQualifier& qualifier)
391 if (qualifier.smooth)
392 // Smooth decoration doesn't exist in SPIR-V 1.0
393 return spv::DecorationMax;
394 else if (qualifier.nopersp)
395 return spv::DecorationNoPerspective;
396 else if (qualifier.flat)
397 return spv::DecorationFlat;
398 #ifdef AMD_EXTENSIONS
399 else if (qualifier.explicitInterp) {
400 builder.addExtension(spv::E_SPV_AMD_shader_explicit_vertex_parameter);
401 return spv::DecorationExplicitInterpAMD;
405 return spv::DecorationMax;
408 // Translate glslang type to SPIR-V auxiliary storage decorations.
409 // Returns spv::DecorationMax when no decoration
410 // should be applied.
411 spv::Decoration TGlslangToSpvTraverser::TranslateAuxiliaryStorageDecoration(const glslang::TQualifier& qualifier)
414 return spv::DecorationPatch;
415 else if (qualifier.centroid)
416 return spv::DecorationCentroid;
417 else if (qualifier.sample) {
418 builder.addCapability(spv::CapabilitySampleRateShading);
419 return spv::DecorationSample;
421 return spv::DecorationMax;
424 // If glslang type is invariant, return SPIR-V invariant decoration.
425 spv::Decoration TranslateInvariantDecoration(const glslang::TQualifier& qualifier)
427 if (qualifier.invariant)
428 return spv::DecorationInvariant;
430 return spv::DecorationMax;
433 // If glslang type is noContraction, return SPIR-V NoContraction decoration.
434 spv::Decoration TranslateNoContractionDecoration(const glslang::TQualifier& qualifier)
436 if (qualifier.noContraction)
437 return spv::DecorationNoContraction;
439 return spv::DecorationMax;
442 // Translate a glslang built-in variable to a SPIR-V built in decoration. Also generate
443 // associated capabilities when required. For some built-in variables, a capability
444 // is generated only when using the variable in an executable instruction, but not when
445 // just declaring a struct member variable with it. This is true for PointSize,
446 // ClipDistance, and CullDistance.
447 spv::BuiltIn TGlslangToSpvTraverser::TranslateBuiltInDecoration(glslang::TBuiltInVariable builtIn, bool memberDeclaration)
450 case glslang::EbvPointSize:
451 // Defer adding the capability until the built-in is actually used.
452 if (! memberDeclaration) {
453 switch (glslangIntermediate->getStage()) {
454 case EShLangGeometry:
455 builder.addCapability(spv::CapabilityGeometryPointSize);
457 case EShLangTessControl:
458 case EShLangTessEvaluation:
459 builder.addCapability(spv::CapabilityTessellationPointSize);
465 return spv::BuiltInPointSize;
467 // These *Distance capabilities logically belong here, but if the member is declared and
468 // then never used, consumers of SPIR-V prefer the capability not be declared.
469 // They are now generated when used, rather than here when declared.
470 // Potentially, the specification should be more clear what the minimum
471 // use needed is to trigger the capability.
473 case glslang::EbvClipDistance:
474 if (!memberDeclaration)
475 builder.addCapability(spv::CapabilityClipDistance);
476 return spv::BuiltInClipDistance;
478 case glslang::EbvCullDistance:
479 if (!memberDeclaration)
480 builder.addCapability(spv::CapabilityCullDistance);
481 return spv::BuiltInCullDistance;
483 case glslang::EbvViewportIndex:
484 if (!memberDeclaration) {
485 builder.addCapability(spv::CapabilityMultiViewport);
487 if (glslangIntermediate->getStage() == EShLangVertex ||
488 glslangIntermediate->getStage() == EShLangTessControl ||
489 glslangIntermediate->getStage() == EShLangTessEvaluation) {
491 builder.addExtension(spv::E_SPV_NV_viewport_array2);
492 builder.addCapability(spv::CapabilityShaderViewportIndexLayerNV);
496 return spv::BuiltInViewportIndex;
498 case glslang::EbvSampleId:
499 builder.addCapability(spv::CapabilitySampleRateShading);
500 return spv::BuiltInSampleId;
502 case glslang::EbvSamplePosition:
503 builder.addCapability(spv::CapabilitySampleRateShading);
504 return spv::BuiltInSamplePosition;
506 case glslang::EbvSampleMask:
507 builder.addCapability(spv::CapabilitySampleRateShading);
508 return spv::BuiltInSampleMask;
510 case glslang::EbvLayer:
511 if (!memberDeclaration) {
512 builder.addCapability(spv::CapabilityGeometry);
514 if (glslangIntermediate->getStage() == EShLangVertex ||
515 glslangIntermediate->getStage() == EShLangTessControl ||
516 glslangIntermediate->getStage() == EShLangTessEvaluation) {
518 builder.addExtension(spv::E_SPV_NV_viewport_array2);
519 builder.addCapability(spv::CapabilityShaderViewportIndexLayerNV);
524 return spv::BuiltInLayer;
526 case glslang::EbvPosition: return spv::BuiltInPosition;
527 case glslang::EbvVertexId: return spv::BuiltInVertexId;
528 case glslang::EbvInstanceId: return spv::BuiltInInstanceId;
529 case glslang::EbvVertexIndex: return spv::BuiltInVertexIndex;
530 case glslang::EbvInstanceIndex: return spv::BuiltInInstanceIndex;
532 case glslang::EbvBaseVertex:
533 builder.addExtension(spv::E_SPV_KHR_shader_draw_parameters);
534 builder.addCapability(spv::CapabilityDrawParameters);
535 return spv::BuiltInBaseVertex;
537 case glslang::EbvBaseInstance:
538 builder.addExtension(spv::E_SPV_KHR_shader_draw_parameters);
539 builder.addCapability(spv::CapabilityDrawParameters);
540 return spv::BuiltInBaseInstance;
542 case glslang::EbvDrawId:
543 builder.addExtension(spv::E_SPV_KHR_shader_draw_parameters);
544 builder.addCapability(spv::CapabilityDrawParameters);
545 return spv::BuiltInDrawIndex;
547 case glslang::EbvPrimitiveId:
548 if (glslangIntermediate->getStage() == EShLangFragment)
549 builder.addCapability(spv::CapabilityGeometry);
550 return spv::BuiltInPrimitiveId;
552 case glslang::EbvInvocationId: return spv::BuiltInInvocationId;
553 case glslang::EbvTessLevelInner: return spv::BuiltInTessLevelInner;
554 case glslang::EbvTessLevelOuter: return spv::BuiltInTessLevelOuter;
555 case glslang::EbvTessCoord: return spv::BuiltInTessCoord;
556 case glslang::EbvPatchVertices: return spv::BuiltInPatchVertices;
557 case glslang::EbvFragCoord: return spv::BuiltInFragCoord;
558 case glslang::EbvPointCoord: return spv::BuiltInPointCoord;
559 case glslang::EbvFace: return spv::BuiltInFrontFacing;
560 case glslang::EbvFragDepth: return spv::BuiltInFragDepth;
561 case glslang::EbvHelperInvocation: return spv::BuiltInHelperInvocation;
562 case glslang::EbvNumWorkGroups: return spv::BuiltInNumWorkgroups;
563 case glslang::EbvWorkGroupSize: return spv::BuiltInWorkgroupSize;
564 case glslang::EbvWorkGroupId: return spv::BuiltInWorkgroupId;
565 case glslang::EbvLocalInvocationId: return spv::BuiltInLocalInvocationId;
566 case glslang::EbvLocalInvocationIndex: return spv::BuiltInLocalInvocationIndex;
567 case glslang::EbvGlobalInvocationId: return spv::BuiltInGlobalInvocationId;
569 case glslang::EbvSubGroupSize:
570 builder.addExtension(spv::E_SPV_KHR_shader_ballot);
571 builder.addCapability(spv::CapabilitySubgroupBallotKHR);
572 return spv::BuiltInSubgroupSize;
574 case glslang::EbvSubGroupInvocation:
575 builder.addExtension(spv::E_SPV_KHR_shader_ballot);
576 builder.addCapability(spv::CapabilitySubgroupBallotKHR);
577 return spv::BuiltInSubgroupLocalInvocationId;
579 case glslang::EbvSubGroupEqMask:
580 builder.addExtension(spv::E_SPV_KHR_shader_ballot);
581 builder.addCapability(spv::CapabilitySubgroupBallotKHR);
582 return spv::BuiltInSubgroupEqMaskKHR;
584 case glslang::EbvSubGroupGeMask:
585 builder.addExtension(spv::E_SPV_KHR_shader_ballot);
586 builder.addCapability(spv::CapabilitySubgroupBallotKHR);
587 return spv::BuiltInSubgroupGeMaskKHR;
589 case glslang::EbvSubGroupGtMask:
590 builder.addExtension(spv::E_SPV_KHR_shader_ballot);
591 builder.addCapability(spv::CapabilitySubgroupBallotKHR);
592 return spv::BuiltInSubgroupGtMaskKHR;
594 case glslang::EbvSubGroupLeMask:
595 builder.addExtension(spv::E_SPV_KHR_shader_ballot);
596 builder.addCapability(spv::CapabilitySubgroupBallotKHR);
597 return spv::BuiltInSubgroupLeMaskKHR;
599 case glslang::EbvSubGroupLtMask:
600 builder.addExtension(spv::E_SPV_KHR_shader_ballot);
601 builder.addCapability(spv::CapabilitySubgroupBallotKHR);
602 return spv::BuiltInSubgroupLtMaskKHR;
604 #ifdef AMD_EXTENSIONS
605 case glslang::EbvBaryCoordNoPersp:
606 builder.addExtension(spv::E_SPV_AMD_shader_explicit_vertex_parameter);
607 return spv::BuiltInBaryCoordNoPerspAMD;
609 case glslang::EbvBaryCoordNoPerspCentroid:
610 builder.addExtension(spv::E_SPV_AMD_shader_explicit_vertex_parameter);
611 return spv::BuiltInBaryCoordNoPerspCentroidAMD;
613 case glslang::EbvBaryCoordNoPerspSample:
614 builder.addExtension(spv::E_SPV_AMD_shader_explicit_vertex_parameter);
615 return spv::BuiltInBaryCoordNoPerspSampleAMD;
617 case glslang::EbvBaryCoordSmooth:
618 builder.addExtension(spv::E_SPV_AMD_shader_explicit_vertex_parameter);
619 return spv::BuiltInBaryCoordSmoothAMD;
621 case glslang::EbvBaryCoordSmoothCentroid:
622 builder.addExtension(spv::E_SPV_AMD_shader_explicit_vertex_parameter);
623 return spv::BuiltInBaryCoordSmoothCentroidAMD;
625 case glslang::EbvBaryCoordSmoothSample:
626 builder.addExtension(spv::E_SPV_AMD_shader_explicit_vertex_parameter);
627 return spv::BuiltInBaryCoordSmoothSampleAMD;
629 case glslang::EbvBaryCoordPullModel:
630 builder.addExtension(spv::E_SPV_AMD_shader_explicit_vertex_parameter);
631 return spv::BuiltInBaryCoordPullModelAMD;
634 case glslang::EbvDeviceIndex:
635 builder.addExtension(spv::E_SPV_KHR_device_group);
636 builder.addCapability(spv::CapabilityDeviceGroup);
637 return spv::BuiltInDeviceIndex;
639 case glslang::EbvViewIndex:
640 builder.addExtension(spv::E_SPV_KHR_multiview);
641 builder.addCapability(spv::CapabilityMultiView);
642 return spv::BuiltInViewIndex;
645 case glslang::EbvViewportMaskNV:
646 if (!memberDeclaration) {
647 builder.addExtension(spv::E_SPV_NV_viewport_array2);
648 builder.addCapability(spv::CapabilityShaderViewportMaskNV);
650 return spv::BuiltInViewportMaskNV;
651 case glslang::EbvSecondaryPositionNV:
652 if (!memberDeclaration) {
653 builder.addExtension(spv::E_SPV_NV_stereo_view_rendering);
654 builder.addCapability(spv::CapabilityShaderStereoViewNV);
656 return spv::BuiltInSecondaryPositionNV;
657 case glslang::EbvSecondaryViewportMaskNV:
658 if (!memberDeclaration) {
659 builder.addExtension(spv::E_SPV_NV_stereo_view_rendering);
660 builder.addCapability(spv::CapabilityShaderStereoViewNV);
662 return spv::BuiltInSecondaryViewportMaskNV;
663 case glslang::EbvPositionPerViewNV:
664 if (!memberDeclaration) {
665 builder.addExtension(spv::E_SPV_NVX_multiview_per_view_attributes);
666 builder.addCapability(spv::CapabilityPerViewAttributesNV);
668 return spv::BuiltInPositionPerViewNV;
669 case glslang::EbvViewportMaskPerViewNV:
670 if (!memberDeclaration) {
671 builder.addExtension(spv::E_SPV_NVX_multiview_per_view_attributes);
672 builder.addCapability(spv::CapabilityPerViewAttributesNV);
674 return spv::BuiltInViewportMaskPerViewNV;
677 return spv::BuiltInMax;
681 // Translate glslang image layout format to SPIR-V image format.
682 spv::ImageFormat TGlslangToSpvTraverser::TranslateImageFormat(const glslang::TType& type)
684 assert(type.getBasicType() == glslang::EbtSampler);
686 // Check for capabilities
687 switch (type.getQualifier().layoutFormat) {
688 case glslang::ElfRg32f:
689 case glslang::ElfRg16f:
690 case glslang::ElfR11fG11fB10f:
691 case glslang::ElfR16f:
692 case glslang::ElfRgba16:
693 case glslang::ElfRgb10A2:
694 case glslang::ElfRg16:
695 case glslang::ElfRg8:
696 case glslang::ElfR16:
698 case glslang::ElfRgba16Snorm:
699 case glslang::ElfRg16Snorm:
700 case glslang::ElfRg8Snorm:
701 case glslang::ElfR16Snorm:
702 case glslang::ElfR8Snorm:
704 case glslang::ElfRg32i:
705 case glslang::ElfRg16i:
706 case glslang::ElfRg8i:
707 case glslang::ElfR16i:
708 case glslang::ElfR8i:
710 case glslang::ElfRgb10a2ui:
711 case glslang::ElfRg32ui:
712 case glslang::ElfRg16ui:
713 case glslang::ElfRg8ui:
714 case glslang::ElfR16ui:
715 case glslang::ElfR8ui:
716 builder.addCapability(spv::CapabilityStorageImageExtendedFormats);
723 // do the translation
724 switch (type.getQualifier().layoutFormat) {
725 case glslang::ElfNone: return spv::ImageFormatUnknown;
726 case glslang::ElfRgba32f: return spv::ImageFormatRgba32f;
727 case glslang::ElfRgba16f: return spv::ImageFormatRgba16f;
728 case glslang::ElfR32f: return spv::ImageFormatR32f;
729 case glslang::ElfRgba8: return spv::ImageFormatRgba8;
730 case glslang::ElfRgba8Snorm: return spv::ImageFormatRgba8Snorm;
731 case glslang::ElfRg32f: return spv::ImageFormatRg32f;
732 case glslang::ElfRg16f: return spv::ImageFormatRg16f;
733 case glslang::ElfR11fG11fB10f: return spv::ImageFormatR11fG11fB10f;
734 case glslang::ElfR16f: return spv::ImageFormatR16f;
735 case glslang::ElfRgba16: return spv::ImageFormatRgba16;
736 case glslang::ElfRgb10A2: return spv::ImageFormatRgb10A2;
737 case glslang::ElfRg16: return spv::ImageFormatRg16;
738 case glslang::ElfRg8: return spv::ImageFormatRg8;
739 case glslang::ElfR16: return spv::ImageFormatR16;
740 case glslang::ElfR8: return spv::ImageFormatR8;
741 case glslang::ElfRgba16Snorm: return spv::ImageFormatRgba16Snorm;
742 case glslang::ElfRg16Snorm: return spv::ImageFormatRg16Snorm;
743 case glslang::ElfRg8Snorm: return spv::ImageFormatRg8Snorm;
744 case glslang::ElfR16Snorm: return spv::ImageFormatR16Snorm;
745 case glslang::ElfR8Snorm: return spv::ImageFormatR8Snorm;
746 case glslang::ElfRgba32i: return spv::ImageFormatRgba32i;
747 case glslang::ElfRgba16i: return spv::ImageFormatRgba16i;
748 case glslang::ElfRgba8i: return spv::ImageFormatRgba8i;
749 case glslang::ElfR32i: return spv::ImageFormatR32i;
750 case glslang::ElfRg32i: return spv::ImageFormatRg32i;
751 case glslang::ElfRg16i: return spv::ImageFormatRg16i;
752 case glslang::ElfRg8i: return spv::ImageFormatRg8i;
753 case glslang::ElfR16i: return spv::ImageFormatR16i;
754 case glslang::ElfR8i: return spv::ImageFormatR8i;
755 case glslang::ElfRgba32ui: return spv::ImageFormatRgba32ui;
756 case glslang::ElfRgba16ui: return spv::ImageFormatRgba16ui;
757 case glslang::ElfRgba8ui: return spv::ImageFormatRgba8ui;
758 case glslang::ElfR32ui: return spv::ImageFormatR32ui;
759 case glslang::ElfRg32ui: return spv::ImageFormatRg32ui;
760 case glslang::ElfRg16ui: return spv::ImageFormatRg16ui;
761 case glslang::ElfRgb10a2ui: return spv::ImageFormatRgb10a2ui;
762 case glslang::ElfRg8ui: return spv::ImageFormatRg8ui;
763 case glslang::ElfR16ui: return spv::ImageFormatR16ui;
764 case glslang::ElfR8ui: return spv::ImageFormatR8ui;
765 default: return spv::ImageFormatMax;
769 // Return whether or not the given type is something that should be tied to a
771 bool IsDescriptorResource(const glslang::TType& type)
773 // uniform and buffer blocks are included, unless it is a push_constant
774 if (type.getBasicType() == glslang::EbtBlock)
775 return type.getQualifier().isUniformOrBuffer() && ! type.getQualifier().layoutPushConstant;
778 // basically samplerXXX/subpass/sampler/texture are all included
779 // if they are the global-scope-class, not the function parameter
780 // (or local, if they ever exist) class.
781 if (type.getBasicType() == glslang::EbtSampler)
782 return type.getQualifier().isUniformOrBuffer();
784 // None of the above.
788 void InheritQualifiers(glslang::TQualifier& child, const glslang::TQualifier& parent)
790 if (child.layoutMatrix == glslang::ElmNone)
791 child.layoutMatrix = parent.layoutMatrix;
793 if (parent.invariant)
794 child.invariant = true;
796 child.nopersp = true;
797 #ifdef AMD_EXTENSIONS
798 if (parent.explicitInterp)
799 child.explicitInterp = true;
804 child.centroid = true;
810 child.coherent = true;
812 child.volatil = true;
814 child.restrict = true;
816 child.readonly = true;
817 if (parent.writeonly)
818 child.writeonly = true;
821 bool HasNonLayoutQualifiers(const glslang::TType& type, const glslang::TQualifier& qualifier)
823 // This should list qualifiers that simultaneous satisfy:
824 // - struct members might inherit from a struct declaration
825 // (note that non-block structs don't explicitly inherit,
826 // only implicitly, meaning no decoration involved)
827 // - affect decorations on the struct members
828 // (note smooth does not, and expecting something like volatile
829 // to effect the whole object)
830 // - are not part of the offset/st430/etc or row/column-major layout
831 return qualifier.invariant || (qualifier.hasLocation() && type.getBasicType() == glslang::EbtBlock);
835 // Implement the TGlslangToSpvTraverser class.
838 TGlslangToSpvTraverser::TGlslangToSpvTraverser(const glslang::TIntermediate* glslangIntermediate, spv::SpvBuildLogger* buildLogger)
839 : TIntermTraverser(true, false, true), shaderEntry(nullptr), currentFunction(nullptr),
840 sequenceDepth(0), logger(buildLogger),
841 builder((glslang::GetKhronosToolId() << 16) | GeneratorVersion, logger),
842 inEntryPoint(false), entryPointTerminated(false), linkageOnly(false),
843 glslangIntermediate(glslangIntermediate)
845 spv::ExecutionModel executionModel = TranslateExecutionModel(glslangIntermediate->getStage());
847 builder.clearAccessChain();
848 builder.setSource(TranslateSourceLanguage(glslangIntermediate->getSource(), glslangIntermediate->getProfile()), glslangIntermediate->getVersion());
849 stdBuiltins = builder.import("GLSL.std.450");
850 builder.setMemoryModel(spv::AddressingModelLogical, spv::MemoryModelGLSL450);
851 shaderEntry = builder.makeEntryPoint(glslangIntermediate->getEntryPointName().c_str());
852 entryPoint = builder.addEntryPoint(executionModel, shaderEntry, glslangIntermediate->getEntryPointName().c_str());
854 // Add the source extensions
855 const auto& sourceExtensions = glslangIntermediate->getRequestedExtensions();
856 for (auto it = sourceExtensions.begin(); it != sourceExtensions.end(); ++it)
857 builder.addSourceExtension(it->c_str());
859 // Add the top-level modes for this shader.
861 if (glslangIntermediate->getXfbMode()) {
862 builder.addCapability(spv::CapabilityTransformFeedback);
863 builder.addExecutionMode(shaderEntry, spv::ExecutionModeXfb);
867 switch (glslangIntermediate->getStage()) {
869 builder.addCapability(spv::CapabilityShader);
872 case EShLangTessEvaluation:
873 case EShLangTessControl:
874 builder.addCapability(spv::CapabilityTessellation);
876 glslang::TLayoutGeometry primitive;
878 if (glslangIntermediate->getStage() == EShLangTessControl) {
879 builder.addExecutionMode(shaderEntry, spv::ExecutionModeOutputVertices, glslangIntermediate->getVertices());
880 primitive = glslangIntermediate->getOutputPrimitive();
882 primitive = glslangIntermediate->getInputPrimitive();
886 case glslang::ElgTriangles: mode = spv::ExecutionModeTriangles; break;
887 case glslang::ElgQuads: mode = spv::ExecutionModeQuads; break;
888 case glslang::ElgIsolines: mode = spv::ExecutionModeIsolines; break;
889 default: mode = spv::ExecutionModeMax; break;
891 if (mode != spv::ExecutionModeMax)
892 builder.addExecutionMode(shaderEntry, (spv::ExecutionMode)mode);
894 switch (glslangIntermediate->getVertexSpacing()) {
895 case glslang::EvsEqual: mode = spv::ExecutionModeSpacingEqual; break;
896 case glslang::EvsFractionalEven: mode = spv::ExecutionModeSpacingFractionalEven; break;
897 case glslang::EvsFractionalOdd: mode = spv::ExecutionModeSpacingFractionalOdd; break;
898 default: mode = spv::ExecutionModeMax; break;
900 if (mode != spv::ExecutionModeMax)
901 builder.addExecutionMode(shaderEntry, (spv::ExecutionMode)mode);
903 switch (glslangIntermediate->getVertexOrder()) {
904 case glslang::EvoCw: mode = spv::ExecutionModeVertexOrderCw; break;
905 case glslang::EvoCcw: mode = spv::ExecutionModeVertexOrderCcw; break;
906 default: mode = spv::ExecutionModeMax; break;
908 if (mode != spv::ExecutionModeMax)
909 builder.addExecutionMode(shaderEntry, (spv::ExecutionMode)mode);
911 if (glslangIntermediate->getPointMode())
912 builder.addExecutionMode(shaderEntry, spv::ExecutionModePointMode);
915 case EShLangGeometry:
916 builder.addCapability(spv::CapabilityGeometry);
917 switch (glslangIntermediate->getInputPrimitive()) {
918 case glslang::ElgPoints: mode = spv::ExecutionModeInputPoints; break;
919 case glslang::ElgLines: mode = spv::ExecutionModeInputLines; break;
920 case glslang::ElgLinesAdjacency: mode = spv::ExecutionModeInputLinesAdjacency; break;
921 case glslang::ElgTriangles: mode = spv::ExecutionModeTriangles; break;
922 case glslang::ElgTrianglesAdjacency: mode = spv::ExecutionModeInputTrianglesAdjacency; break;
923 default: mode = spv::ExecutionModeMax; break;
925 if (mode != spv::ExecutionModeMax)
926 builder.addExecutionMode(shaderEntry, (spv::ExecutionMode)mode);
928 builder.addExecutionMode(shaderEntry, spv::ExecutionModeInvocations, glslangIntermediate->getInvocations());
930 switch (glslangIntermediate->getOutputPrimitive()) {
931 case glslang::ElgPoints: mode = spv::ExecutionModeOutputPoints; break;
932 case glslang::ElgLineStrip: mode = spv::ExecutionModeOutputLineStrip; break;
933 case glslang::ElgTriangleStrip: mode = spv::ExecutionModeOutputTriangleStrip; break;
934 default: mode = spv::ExecutionModeMax; break;
936 if (mode != spv::ExecutionModeMax)
937 builder.addExecutionMode(shaderEntry, (spv::ExecutionMode)mode);
938 builder.addExecutionMode(shaderEntry, spv::ExecutionModeOutputVertices, glslangIntermediate->getVertices());
941 case EShLangFragment:
942 builder.addCapability(spv::CapabilityShader);
943 if (glslangIntermediate->getPixelCenterInteger())
944 builder.addExecutionMode(shaderEntry, spv::ExecutionModePixelCenterInteger);
946 if (glslangIntermediate->getOriginUpperLeft())
947 builder.addExecutionMode(shaderEntry, spv::ExecutionModeOriginUpperLeft);
949 builder.addExecutionMode(shaderEntry, spv::ExecutionModeOriginLowerLeft);
951 if (glslangIntermediate->getEarlyFragmentTests())
952 builder.addExecutionMode(shaderEntry, spv::ExecutionModeEarlyFragmentTests);
954 switch(glslangIntermediate->getDepth()) {
955 case glslang::EldGreater: mode = spv::ExecutionModeDepthGreater; break;
956 case glslang::EldLess: mode = spv::ExecutionModeDepthLess; break;
957 default: mode = spv::ExecutionModeMax; break;
959 if (mode != spv::ExecutionModeMax)
960 builder.addExecutionMode(shaderEntry, (spv::ExecutionMode)mode);
962 if (glslangIntermediate->getDepth() != glslang::EldUnchanged && glslangIntermediate->isDepthReplacing())
963 builder.addExecutionMode(shaderEntry, spv::ExecutionModeDepthReplacing);
967 builder.addCapability(spv::CapabilityShader);
968 builder.addExecutionMode(shaderEntry, spv::ExecutionModeLocalSize, glslangIntermediate->getLocalSize(0),
969 glslangIntermediate->getLocalSize(1),
970 glslangIntermediate->getLocalSize(2));
978 // Finish creating SPV, after the traversal is complete.
979 void TGlslangToSpvTraverser::finishSpv()
981 if (! entryPointTerminated) {
982 builder.setBuildPoint(shaderEntry->getLastBlock());
983 builder.leaveFunction();
986 // finish off the entry-point SPV instruction by adding the Input/Output <id>
987 for (auto it = iOSet.cbegin(); it != iOSet.cend(); ++it)
988 entryPoint->addIdOperand(*it);
990 builder.eliminateDeadDecorations();
993 // Write the SPV into 'out'.
994 void TGlslangToSpvTraverser::dumpSpv(std::vector<unsigned int>& out)
1000 // Implement the traversal functions.
1002 // Return true from interior nodes to have the external traversal
1003 // continue on to children. Return false if children were
1004 // already processed.
1008 // Symbols can turn into
1009 // - uniform/input reads
1011 // - complex lvalue base setups: foo.bar[3].... , where we see foo and start up an access chain
1012 // - something simple that degenerates into the last bullet
1014 void TGlslangToSpvTraverser::visitSymbol(glslang::TIntermSymbol* symbol)
1016 SpecConstantOpModeGuard spec_constant_op_mode_setter(&builder);
1017 if (symbol->getType().getQualifier().isSpecConstant())
1018 spec_constant_op_mode_setter.turnOnSpecConstantOpMode();
1020 // getSymbolId() will set up all the IO decorations on the first call.
1021 // Formal function parameters were mapped during makeFunctions().
1022 spv::Id id = getSymbolId(symbol);
1024 // Include all "static use" and "linkage only" interface variables on the OpEntryPoint instruction
1025 if (builder.isPointer(id)) {
1026 spv::StorageClass sc = builder.getStorageClass(id);
1027 if (sc == spv::StorageClassInput || sc == spv::StorageClassOutput)
1031 // Only process non-linkage-only nodes for generating actual static uses
1032 if (! linkageOnly || symbol->getQualifier().isSpecConstant()) {
1033 // Prepare to generate code for the access
1035 // L-value chains will be computed left to right. We're on the symbol now,
1036 // which is the left-most part of the access chain, so now is "clear" time,
1037 // followed by setting the base.
1038 builder.clearAccessChain();
1040 // For now, we consider all user variables as being in memory, so they are pointers,
1042 // A) R-Value arguments to a function, which are an intermediate object.
1043 // See comments in handleUserFunctionCall().
1044 // B) Specialization constants (normal constants don't even come in as a variable),
1045 // These are also pure R-values.
1046 glslang::TQualifier qualifier = symbol->getQualifier();
1047 if (qualifier.isSpecConstant() || rValueParameters.find(symbol->getId()) != rValueParameters.end())
1048 builder.setAccessChainRValue(id);
1050 builder.setAccessChainLValue(id);
1054 bool TGlslangToSpvTraverser::visitBinary(glslang::TVisit /* visit */, glslang::TIntermBinary* node)
1056 SpecConstantOpModeGuard spec_constant_op_mode_setter(&builder);
1057 if (node->getType().getQualifier().isSpecConstant())
1058 spec_constant_op_mode_setter.turnOnSpecConstantOpMode();
1060 // First, handle special cases
1061 switch (node->getOp()) {
1062 case glslang::EOpAssign:
1063 case glslang::EOpAddAssign:
1064 case glslang::EOpSubAssign:
1065 case glslang::EOpMulAssign:
1066 case glslang::EOpVectorTimesMatrixAssign:
1067 case glslang::EOpVectorTimesScalarAssign:
1068 case glslang::EOpMatrixTimesScalarAssign:
1069 case glslang::EOpMatrixTimesMatrixAssign:
1070 case glslang::EOpDivAssign:
1071 case glslang::EOpModAssign:
1072 case glslang::EOpAndAssign:
1073 case glslang::EOpInclusiveOrAssign:
1074 case glslang::EOpExclusiveOrAssign:
1075 case glslang::EOpLeftShiftAssign:
1076 case glslang::EOpRightShiftAssign:
1077 // A bin-op assign "a += b" means the same thing as "a = a + b"
1078 // where a is evaluated before b. For a simple assignment, GLSL
1079 // says to evaluate the left before the right. So, always, left
1080 // node then right node.
1082 // get the left l-value, save it away
1083 builder.clearAccessChain();
1084 node->getLeft()->traverse(this);
1085 spv::Builder::AccessChain lValue = builder.getAccessChain();
1087 // evaluate the right
1088 builder.clearAccessChain();
1089 node->getRight()->traverse(this);
1090 spv::Id rValue = accessChainLoad(node->getRight()->getType());
1092 if (node->getOp() != glslang::EOpAssign) {
1093 // the left is also an r-value
1094 builder.setAccessChain(lValue);
1095 spv::Id leftRValue = accessChainLoad(node->getLeft()->getType());
1098 rValue = createBinaryOperation(node->getOp(), TranslatePrecisionDecoration(node->getOperationPrecision()),
1099 TranslateNoContractionDecoration(node->getType().getQualifier()),
1100 convertGlslangToSpvType(node->getType()), leftRValue, rValue,
1101 node->getType().getBasicType());
1103 // these all need their counterparts in createBinaryOperation()
1104 assert(rValue != spv::NoResult);
1108 builder.setAccessChain(lValue);
1109 multiTypeStore(node->getType(), rValue);
1111 // assignments are expressions having an rValue after they are evaluated...
1112 builder.clearAccessChain();
1113 builder.setAccessChainRValue(rValue);
1116 case glslang::EOpIndexDirect:
1117 case glslang::EOpIndexDirectStruct:
1119 // Get the left part of the access chain.
1120 node->getLeft()->traverse(this);
1122 // Add the next element in the chain
1124 const int glslangIndex = node->getRight()->getAsConstantUnion()->getConstArray()[0].getIConst();
1125 if (! node->getLeft()->getType().isArray() &&
1126 node->getLeft()->getType().isVector() &&
1127 node->getOp() == glslang::EOpIndexDirect) {
1128 // This is essentially a hard-coded vector swizzle of size 1,
1129 // so short circuit the access-chain stuff with a swizzle.
1130 std::vector<unsigned> swizzle;
1131 swizzle.push_back(glslangIndex);
1132 builder.accessChainPushSwizzle(swizzle, convertGlslangToSpvType(node->getLeft()->getType()));
1134 int spvIndex = glslangIndex;
1135 if (node->getLeft()->getBasicType() == glslang::EbtBlock &&
1136 node->getOp() == glslang::EOpIndexDirectStruct)
1138 // This may be, e.g., an anonymous block-member selection, which generally need
1139 // index remapping due to hidden members in anonymous blocks.
1140 std::vector<int>& remapper = memberRemapper[node->getLeft()->getType().getStruct()];
1141 assert(remapper.size() > 0);
1142 spvIndex = remapper[glslangIndex];
1145 // normal case for indexing array or structure or block
1146 builder.accessChainPush(builder.makeIntConstant(spvIndex));
1148 // Add capabilities here for accessing PointSize and clip/cull distance.
1149 // We have deferred generation of associated capabilities until now.
1150 if (node->getLeft()->getType().isStruct() && ! node->getLeft()->getType().isArray())
1151 declareUseOfStructMember(*(node->getLeft()->getType().getStruct()), glslangIndex);
1155 case glslang::EOpIndexIndirect:
1157 // Structure or array or vector indirection.
1158 // Will use native SPIR-V access-chain for struct and array indirection;
1159 // matrices are arrays of vectors, so will also work for a matrix.
1160 // Will use the access chain's 'component' for variable index into a vector.
1162 // This adapter is building access chains left to right.
1163 // Set up the access chain to the left.
1164 node->getLeft()->traverse(this);
1166 // save it so that computing the right side doesn't trash it
1167 spv::Builder::AccessChain partial = builder.getAccessChain();
1169 // compute the next index in the chain
1170 builder.clearAccessChain();
1171 node->getRight()->traverse(this);
1172 spv::Id index = accessChainLoad(node->getRight()->getType());
1174 // restore the saved access chain
1175 builder.setAccessChain(partial);
1177 if (! node->getLeft()->getType().isArray() && node->getLeft()->getType().isVector())
1178 builder.accessChainPushComponent(index, convertGlslangToSpvType(node->getLeft()->getType()));
1180 builder.accessChainPush(index);
1183 case glslang::EOpVectorSwizzle:
1185 node->getLeft()->traverse(this);
1186 std::vector<unsigned> swizzle;
1187 convertSwizzle(*node->getRight()->getAsAggregate(), swizzle);
1188 builder.accessChainPushSwizzle(swizzle, convertGlslangToSpvType(node->getLeft()->getType()));
1191 case glslang::EOpMatrixSwizzle:
1192 logger->missingFunctionality("matrix swizzle");
1194 case glslang::EOpLogicalOr:
1195 case glslang::EOpLogicalAnd:
1198 // These may require short circuiting, but can sometimes be done as straight
1199 // binary operations. The right operand must be short circuited if it has
1200 // side effects, and should probably be if it is complex.
1201 if (isTrivial(node->getRight()->getAsTyped()))
1202 break; // handle below as a normal binary operation
1203 // otherwise, we need to do dynamic short circuiting on the right operand
1204 spv::Id result = createShortCircuit(node->getOp(), *node->getLeft()->getAsTyped(), *node->getRight()->getAsTyped());
1205 builder.clearAccessChain();
1206 builder.setAccessChainRValue(result);
1213 // Assume generic binary op...
1215 // get right operand
1216 builder.clearAccessChain();
1217 node->getLeft()->traverse(this);
1218 spv::Id left = accessChainLoad(node->getLeft()->getType());
1221 builder.clearAccessChain();
1222 node->getRight()->traverse(this);
1223 spv::Id right = accessChainLoad(node->getRight()->getType());
1226 spv::Id result = createBinaryOperation(node->getOp(), TranslatePrecisionDecoration(node->getOperationPrecision()),
1227 TranslateNoContractionDecoration(node->getType().getQualifier()),
1228 convertGlslangToSpvType(node->getType()), left, right,
1229 node->getLeft()->getType().getBasicType());
1231 builder.clearAccessChain();
1233 logger->missingFunctionality("unknown glslang binary operation");
1234 return true; // pick up a child as the place-holder result
1236 builder.setAccessChainRValue(result);
1241 bool TGlslangToSpvTraverser::visitUnary(glslang::TVisit /* visit */, glslang::TIntermUnary* node)
1243 SpecConstantOpModeGuard spec_constant_op_mode_setter(&builder);
1244 if (node->getType().getQualifier().isSpecConstant())
1245 spec_constant_op_mode_setter.turnOnSpecConstantOpMode();
1247 spv::Id result = spv::NoResult;
1249 // try texturing first
1250 result = createImageTextureFunctionCall(node);
1251 if (result != spv::NoResult) {
1252 builder.clearAccessChain();
1253 builder.setAccessChainRValue(result);
1255 return false; // done with this node
1260 if (node->getOp() == glslang::EOpArrayLength) {
1261 // Quite special; won't want to evaluate the operand.
1263 // Normal .length() would have been constant folded by the front-end.
1264 // So, this has to be block.lastMember.length().
1265 // SPV wants "block" and member number as the operands, go get them.
1266 assert(node->getOperand()->getType().isRuntimeSizedArray());
1267 glslang::TIntermTyped* block = node->getOperand()->getAsBinaryNode()->getLeft();
1268 block->traverse(this);
1269 unsigned int member = node->getOperand()->getAsBinaryNode()->getRight()->getAsConstantUnion()->getConstArray()[0].getUConst();
1270 spv::Id length = builder.createArrayLength(builder.accessChainGetLValue(), member);
1272 builder.clearAccessChain();
1273 builder.setAccessChainRValue(length);
1278 // Start by evaluating the operand
1280 // Does it need a swizzle inversion? If so, evaluation is inverted;
1281 // operate first on the swizzle base, then apply the swizzle.
1282 spv::Id invertedType = spv::NoType;
1283 auto resultType = [&invertedType, &node, this](){ return invertedType != spv::NoType ? invertedType : convertGlslangToSpvType(node->getType()); };
1284 if (node->getOp() == glslang::EOpInterpolateAtCentroid)
1285 invertedType = getInvertedSwizzleType(*node->getOperand());
1287 builder.clearAccessChain();
1288 if (invertedType != spv::NoType)
1289 node->getOperand()->getAsBinaryNode()->getLeft()->traverse(this);
1291 node->getOperand()->traverse(this);
1293 spv::Id operand = spv::NoResult;
1295 if (node->getOp() == glslang::EOpAtomicCounterIncrement ||
1296 node->getOp() == glslang::EOpAtomicCounterDecrement ||
1297 node->getOp() == glslang::EOpAtomicCounter ||
1298 node->getOp() == glslang::EOpInterpolateAtCentroid)
1299 operand = builder.accessChainGetLValue(); // Special case l-value operands
1301 operand = accessChainLoad(node->getOperand()->getType());
1303 spv::Decoration precision = TranslatePrecisionDecoration(node->getOperationPrecision());
1304 spv::Decoration noContraction = TranslateNoContractionDecoration(node->getType().getQualifier());
1306 // it could be a conversion
1308 result = createConversion(node->getOp(), precision, noContraction, resultType(), operand, node->getOperand()->getBasicType());
1310 // if not, then possibly an operation
1312 result = createUnaryOperation(node->getOp(), precision, noContraction, resultType(), operand, node->getOperand()->getBasicType());
1316 result = createInvertedSwizzle(precision, *node->getOperand(), result);
1318 builder.clearAccessChain();
1319 builder.setAccessChainRValue(result);
1321 return false; // done with this node
1324 // it must be a special case, check...
1325 switch (node->getOp()) {
1326 case glslang::EOpPostIncrement:
1327 case glslang::EOpPostDecrement:
1328 case glslang::EOpPreIncrement:
1329 case glslang::EOpPreDecrement:
1331 // we need the integer value "1" or the floating point "1.0" to add/subtract
1333 if (node->getBasicType() == glslang::EbtFloat)
1334 one = builder.makeFloatConstant(1.0F);
1335 else if (node->getBasicType() == glslang::EbtDouble)
1336 one = builder.makeDoubleConstant(1.0);
1337 #ifdef AMD_EXTENSIONS
1338 else if (node->getBasicType() == glslang::EbtFloat16)
1339 one = builder.makeFloat16Constant(1.0F);
1341 else if (node->getBasicType() == glslang::EbtInt64 || node->getBasicType() == glslang::EbtUint64)
1342 one = builder.makeInt64Constant(1);
1344 one = builder.makeIntConstant(1);
1345 glslang::TOperator op;
1346 if (node->getOp() == glslang::EOpPreIncrement ||
1347 node->getOp() == glslang::EOpPostIncrement)
1348 op = glslang::EOpAdd;
1350 op = glslang::EOpSub;
1352 spv::Id result = createBinaryOperation(op, precision,
1353 TranslateNoContractionDecoration(node->getType().getQualifier()),
1354 convertGlslangToSpvType(node->getType()), operand, one,
1355 node->getType().getBasicType());
1356 assert(result != spv::NoResult);
1358 // The result of operation is always stored, but conditionally the
1359 // consumed result. The consumed result is always an r-value.
1360 builder.accessChainStore(result);
1361 builder.clearAccessChain();
1362 if (node->getOp() == glslang::EOpPreIncrement ||
1363 node->getOp() == glslang::EOpPreDecrement)
1364 builder.setAccessChainRValue(result);
1366 builder.setAccessChainRValue(operand);
1371 case glslang::EOpEmitStreamVertex:
1372 builder.createNoResultOp(spv::OpEmitStreamVertex, operand);
1374 case glslang::EOpEndStreamPrimitive:
1375 builder.createNoResultOp(spv::OpEndStreamPrimitive, operand);
1379 logger->missingFunctionality("unknown glslang unary");
1380 return true; // pick up operand as placeholder result
1384 bool TGlslangToSpvTraverser::visitAggregate(glslang::TVisit visit, glslang::TIntermAggregate* node)
1386 SpecConstantOpModeGuard spec_constant_op_mode_setter(&builder);
1387 if (node->getType().getQualifier().isSpecConstant())
1388 spec_constant_op_mode_setter.turnOnSpecConstantOpMode();
1390 spv::Id result = spv::NoResult;
1391 spv::Id invertedType = spv::NoType; // to use to override the natural type of the node
1392 auto resultType = [&invertedType, &node, this](){ return invertedType != spv::NoType ? invertedType : convertGlslangToSpvType(node->getType()); };
1395 result = createImageTextureFunctionCall(node);
1396 if (result != spv::NoResult) {
1397 builder.clearAccessChain();
1398 builder.setAccessChainRValue(result);
1401 } else if (node->getOp() == glslang::EOpImageStore) {
1402 // "imageStore" is a special case, which has no result
1406 glslang::TOperator binOp = glslang::EOpNull;
1407 bool reduceComparison = true;
1408 bool isMatrix = false;
1409 bool noReturnValue = false;
1410 bool atomic = false;
1412 assert(node->getOp());
1414 spv::Decoration precision = TranslatePrecisionDecoration(node->getOperationPrecision());
1416 switch (node->getOp()) {
1417 case glslang::EOpSequence:
1424 if (sequenceDepth == 1) {
1425 // If this is the parent node of all the functions, we want to see them
1426 // early, so all call points have actual SPIR-V functions to reference.
1427 // In all cases, still let the traverser visit the children for us.
1428 makeFunctions(node->getAsAggregate()->getSequence());
1430 // Also, we want all globals initializers to go into the beginning of the entry point, before
1431 // anything else gets there, so visit out of order, doing them all now.
1432 makeGlobalInitializers(node->getAsAggregate()->getSequence());
1434 // Initializers are done, don't want to visit again, but functions and link objects need to be processed,
1435 // so do them manually.
1436 visitFunctions(node->getAsAggregate()->getSequence());
1443 case glslang::EOpLinkerObjects:
1445 if (visit == glslang::EvPreVisit)
1448 linkageOnly = false;
1452 case glslang::EOpComma:
1454 // processing from left to right naturally leaves the right-most
1455 // lying around in the access chain
1456 glslang::TIntermSequence& glslangOperands = node->getSequence();
1457 for (int i = 0; i < (int)glslangOperands.size(); ++i)
1458 glslangOperands[i]->traverse(this);
1462 case glslang::EOpFunction:
1463 if (visit == glslang::EvPreVisit) {
1464 if (isShaderEntryPoint(node)) {
1465 inEntryPoint = true;
1466 builder.setBuildPoint(shaderEntry->getLastBlock());
1467 currentFunction = shaderEntry;
1469 handleFunctionEntry(node);
1473 entryPointTerminated = true;
1474 builder.leaveFunction();
1475 inEntryPoint = false;
1479 case glslang::EOpParameters:
1480 // Parameters will have been consumed by EOpFunction processing, but not
1481 // the body, so we still visited the function node's children, making this
1484 case glslang::EOpFunctionCall:
1486 if (node->isUserDefined())
1487 result = handleUserFunctionCall(node);
1488 // assert(result); // this can happen for bad shaders because the call graph completeness checking is not yet done
1490 builder.clearAccessChain();
1491 builder.setAccessChainRValue(result);
1493 logger->missingFunctionality("missing user function; linker needs to catch that");
1497 case glslang::EOpConstructMat2x2:
1498 case glslang::EOpConstructMat2x3:
1499 case glslang::EOpConstructMat2x4:
1500 case glslang::EOpConstructMat3x2:
1501 case glslang::EOpConstructMat3x3:
1502 case glslang::EOpConstructMat3x4:
1503 case glslang::EOpConstructMat4x2:
1504 case glslang::EOpConstructMat4x3:
1505 case glslang::EOpConstructMat4x4:
1506 case glslang::EOpConstructDMat2x2:
1507 case glslang::EOpConstructDMat2x3:
1508 case glslang::EOpConstructDMat2x4:
1509 case glslang::EOpConstructDMat3x2:
1510 case glslang::EOpConstructDMat3x3:
1511 case glslang::EOpConstructDMat3x4:
1512 case glslang::EOpConstructDMat4x2:
1513 case glslang::EOpConstructDMat4x3:
1514 case glslang::EOpConstructDMat4x4:
1515 #ifdef AMD_EXTENSIONS
1516 case glslang::EOpConstructF16Mat2x2:
1517 case glslang::EOpConstructF16Mat2x3:
1518 case glslang::EOpConstructF16Mat2x4:
1519 case glslang::EOpConstructF16Mat3x2:
1520 case glslang::EOpConstructF16Mat3x3:
1521 case glslang::EOpConstructF16Mat3x4:
1522 case glslang::EOpConstructF16Mat4x2:
1523 case glslang::EOpConstructF16Mat4x3:
1524 case glslang::EOpConstructF16Mat4x4:
1528 case glslang::EOpConstructFloat:
1529 case glslang::EOpConstructVec2:
1530 case glslang::EOpConstructVec3:
1531 case glslang::EOpConstructVec4:
1532 case glslang::EOpConstructDouble:
1533 case glslang::EOpConstructDVec2:
1534 case glslang::EOpConstructDVec3:
1535 case glslang::EOpConstructDVec4:
1536 #ifdef AMD_EXTENSIONS
1537 case glslang::EOpConstructFloat16:
1538 case glslang::EOpConstructF16Vec2:
1539 case glslang::EOpConstructF16Vec3:
1540 case glslang::EOpConstructF16Vec4:
1542 case glslang::EOpConstructBool:
1543 case glslang::EOpConstructBVec2:
1544 case glslang::EOpConstructBVec3:
1545 case glslang::EOpConstructBVec4:
1546 case glslang::EOpConstructInt:
1547 case glslang::EOpConstructIVec2:
1548 case glslang::EOpConstructIVec3:
1549 case glslang::EOpConstructIVec4:
1550 case glslang::EOpConstructUint:
1551 case glslang::EOpConstructUVec2:
1552 case glslang::EOpConstructUVec3:
1553 case glslang::EOpConstructUVec4:
1554 case glslang::EOpConstructInt64:
1555 case glslang::EOpConstructI64Vec2:
1556 case glslang::EOpConstructI64Vec3:
1557 case glslang::EOpConstructI64Vec4:
1558 case glslang::EOpConstructUint64:
1559 case glslang::EOpConstructU64Vec2:
1560 case glslang::EOpConstructU64Vec3:
1561 case glslang::EOpConstructU64Vec4:
1562 case glslang::EOpConstructStruct:
1563 case glslang::EOpConstructTextureSampler:
1565 std::vector<spv::Id> arguments;
1566 translateArguments(*node, arguments);
1567 spv::Id constructed;
1568 if (node->getOp() == glslang::EOpConstructTextureSampler)
1569 constructed = builder.createOp(spv::OpSampledImage, resultType(), arguments);
1570 else if (node->getOp() == glslang::EOpConstructStruct || node->getType().isArray()) {
1571 std::vector<spv::Id> constituents;
1572 for (int c = 0; c < (int)arguments.size(); ++c)
1573 constituents.push_back(arguments[c]);
1574 constructed = builder.createCompositeConstruct(resultType(), constituents);
1575 } else if (isMatrix)
1576 constructed = builder.createMatrixConstructor(precision, arguments, resultType());
1578 constructed = builder.createConstructor(precision, arguments, resultType());
1580 builder.clearAccessChain();
1581 builder.setAccessChainRValue(constructed);
1586 // These six are component-wise compares with component-wise results.
1587 // Forward on to createBinaryOperation(), requesting a vector result.
1588 case glslang::EOpLessThan:
1589 case glslang::EOpGreaterThan:
1590 case glslang::EOpLessThanEqual:
1591 case glslang::EOpGreaterThanEqual:
1592 case glslang::EOpVectorEqual:
1593 case glslang::EOpVectorNotEqual:
1595 // Map the operation to a binary
1596 binOp = node->getOp();
1597 reduceComparison = false;
1598 switch (node->getOp()) {
1599 case glslang::EOpVectorEqual: binOp = glslang::EOpVectorEqual; break;
1600 case glslang::EOpVectorNotEqual: binOp = glslang::EOpVectorNotEqual; break;
1601 default: binOp = node->getOp(); break;
1606 case glslang::EOpMul:
1607 // component-wise matrix multiply
1608 binOp = glslang::EOpMul;
1610 case glslang::EOpOuterProduct:
1611 // two vectors multiplied to make a matrix
1612 binOp = glslang::EOpOuterProduct;
1614 case glslang::EOpDot:
1616 // for scalar dot product, use multiply
1617 glslang::TIntermSequence& glslangOperands = node->getSequence();
1618 if (glslangOperands[0]->getAsTyped()->getVectorSize() == 1)
1619 binOp = glslang::EOpMul;
1622 case glslang::EOpMod:
1623 // when an aggregate, this is the floating-point mod built-in function,
1624 // which can be emitted by the one in createBinaryOperation()
1625 binOp = glslang::EOpMod;
1627 case glslang::EOpEmitVertex:
1628 case glslang::EOpEndPrimitive:
1629 case glslang::EOpBarrier:
1630 case glslang::EOpMemoryBarrier:
1631 case glslang::EOpMemoryBarrierAtomicCounter:
1632 case glslang::EOpMemoryBarrierBuffer:
1633 case glslang::EOpMemoryBarrierImage:
1634 case glslang::EOpMemoryBarrierShared:
1635 case glslang::EOpGroupMemoryBarrier:
1636 case glslang::EOpAllMemoryBarrierWithGroupSync:
1637 case glslang::EOpGroupMemoryBarrierWithGroupSync:
1638 case glslang::EOpWorkgroupMemoryBarrier:
1639 case glslang::EOpWorkgroupMemoryBarrierWithGroupSync:
1640 noReturnValue = true;
1641 // These all have 0 operands and will naturally finish up in the code below for 0 operands
1644 case glslang::EOpAtomicAdd:
1645 case glslang::EOpAtomicMin:
1646 case glslang::EOpAtomicMax:
1647 case glslang::EOpAtomicAnd:
1648 case glslang::EOpAtomicOr:
1649 case glslang::EOpAtomicXor:
1650 case glslang::EOpAtomicExchange:
1651 case glslang::EOpAtomicCompSwap:
1660 // See if it maps to a regular operation.
1662 if (binOp != glslang::EOpNull) {
1663 glslang::TIntermTyped* left = node->getSequence()[0]->getAsTyped();
1664 glslang::TIntermTyped* right = node->getSequence()[1]->getAsTyped();
1665 assert(left && right);
1667 builder.clearAccessChain();
1668 left->traverse(this);
1669 spv::Id leftId = accessChainLoad(left->getType());
1671 builder.clearAccessChain();
1672 right->traverse(this);
1673 spv::Id rightId = accessChainLoad(right->getType());
1675 result = createBinaryOperation(binOp, precision, TranslateNoContractionDecoration(node->getType().getQualifier()),
1676 resultType(), leftId, rightId,
1677 left->getType().getBasicType(), reduceComparison);
1679 // code above should only make binOp that exists in createBinaryOperation
1680 assert(result != spv::NoResult);
1681 builder.clearAccessChain();
1682 builder.setAccessChainRValue(result);
1688 // Create the list of operands.
1690 glslang::TIntermSequence& glslangOperands = node->getSequence();
1691 std::vector<spv::Id> operands;
1692 for (int arg = 0; arg < (int)glslangOperands.size(); ++arg) {
1693 // special case l-value operands; there are just a few
1694 bool lvalue = false;
1695 switch (node->getOp()) {
1696 case glslang::EOpFrexp:
1697 case glslang::EOpModf:
1701 case glslang::EOpInterpolateAtSample:
1702 case glslang::EOpInterpolateAtOffset:
1703 #ifdef AMD_EXTENSIONS
1704 case glslang::EOpInterpolateAtVertex:
1709 // Does it need a swizzle inversion? If so, evaluation is inverted;
1710 // operate first on the swizzle base, then apply the swizzle.
1711 if (glslangOperands[0]->getAsOperator() &&
1712 glslangOperands[0]->getAsOperator()->getOp() == glslang::EOpVectorSwizzle)
1713 invertedType = convertGlslangToSpvType(glslangOperands[0]->getAsBinaryNode()->getLeft()->getType());
1716 case glslang::EOpAtomicAdd:
1717 case glslang::EOpAtomicMin:
1718 case glslang::EOpAtomicMax:
1719 case glslang::EOpAtomicAnd:
1720 case glslang::EOpAtomicOr:
1721 case glslang::EOpAtomicXor:
1722 case glslang::EOpAtomicExchange:
1723 case glslang::EOpAtomicCompSwap:
1727 case glslang::EOpAddCarry:
1728 case glslang::EOpSubBorrow:
1732 case glslang::EOpUMulExtended:
1733 case glslang::EOpIMulExtended:
1740 builder.clearAccessChain();
1741 if (invertedType != spv::NoType && arg == 0)
1742 glslangOperands[0]->getAsBinaryNode()->getLeft()->traverse(this);
1744 glslangOperands[arg]->traverse(this);
1746 operands.push_back(builder.accessChainGetLValue());
1748 operands.push_back(accessChainLoad(glslangOperands[arg]->getAsTyped()->getType()));
1752 // Handle all atomics
1753 result = createAtomicOperation(node->getOp(), precision, resultType(), operands, node->getBasicType());
1755 // Pass through to generic operations.
1756 switch (glslangOperands.size()) {
1758 result = createNoArgOperation(node->getOp(), precision, resultType());
1761 result = createUnaryOperation(
1762 node->getOp(), precision,
1763 TranslateNoContractionDecoration(node->getType().getQualifier()),
1764 resultType(), operands.front(),
1765 glslangOperands[0]->getAsTyped()->getBasicType());
1768 result = createMiscOperation(node->getOp(), precision, resultType(), operands, node->getBasicType());
1772 result = createInvertedSwizzle(precision, *glslangOperands[0]->getAsBinaryNode(), result);
1779 logger->missingFunctionality("unknown glslang aggregate");
1780 return true; // pick up a child as a placeholder operand
1782 builder.clearAccessChain();
1783 builder.setAccessChainRValue(result);
1788 // This path handles both if-then-else and ?:
1789 // The if-then-else has a node type of void, while
1790 // ?: has either a void or a non-void node type
1792 // Leaving the result, when not void:
1793 // GLSL only has r-values as the result of a :?, but
1794 // if we have an l-value, that can be more efficient if it will
1795 // become the base of a complex r-value expression, because the
1796 // next layer copies r-values into memory to use the access-chain mechanism
1797 bool TGlslangToSpvTraverser::visitSelection(glslang::TVisit /* visit */, glslang::TIntermSelection* node)
1799 // See if it simple and safe to generate OpSelect instead of using control flow.
1800 // Crucially, side effects must be avoided, and there are performance trade-offs.
1801 // Return true if good idea (and safe) for OpSelect, false otherwise.
1802 const auto selectPolicy = [&]() -> bool {
1803 if ((!node->getType().isScalar() && !node->getType().isVector()) ||
1804 node->getBasicType() == glslang::EbtVoid)
1807 if (node->getTrueBlock() == nullptr ||
1808 node->getFalseBlock() == nullptr)
1811 assert(node->getType() == node->getTrueBlock() ->getAsTyped()->getType() &&
1812 node->getType() == node->getFalseBlock()->getAsTyped()->getType());
1814 // return true if a single operand to ? : is okay for OpSelect
1815 const auto operandOkay = [](glslang::TIntermTyped* node) {
1816 return node->getAsSymbolNode() || node->getType().getQualifier().isConstant();
1819 return operandOkay(node->getTrueBlock() ->getAsTyped()) &&
1820 operandOkay(node->getFalseBlock()->getAsTyped());
1823 // Emit OpSelect for this selection.
1824 const auto handleAsOpSelect = [&]() {
1825 node->getCondition()->traverse(this);
1826 spv::Id condition = accessChainLoad(node->getCondition()->getType());
1827 node->getTrueBlock()->traverse(this);
1828 spv::Id trueValue = accessChainLoad(node->getTrueBlock()->getAsTyped()->getType());
1829 node->getFalseBlock()->traverse(this);
1830 spv::Id falseValue = accessChainLoad(node->getTrueBlock()->getAsTyped()->getType());
1832 // smear condition to vector, if necessary (AST is always scalar)
1833 if (builder.isVector(trueValue))
1834 condition = builder.smearScalar(spv::NoPrecision, condition,
1835 builder.makeVectorType(builder.makeBoolType(),
1836 builder.getNumComponents(trueValue)));
1838 spv::Id select = builder.createTriOp(spv::OpSelect,
1839 convertGlslangToSpvType(node->getType()), condition,
1840 trueValue, falseValue);
1841 builder.clearAccessChain();
1842 builder.setAccessChainRValue(select);
1847 if (selectPolicy()) {
1848 SpecConstantOpModeGuard spec_constant_op_mode_setter(&builder);
1849 if (node->getType().getQualifier().isSpecConstant())
1850 spec_constant_op_mode_setter.turnOnSpecConstantOpMode();
1856 // Instead, emit control flow...
1858 // Don't handle results as temporaries, because there will be two names
1859 // and better to leave SSA to later passes.
1860 spv::Id result = (node->getBasicType() == glslang::EbtVoid)
1862 : builder.createVariable(spv::StorageClassFunction, convertGlslangToSpvType(node->getType()));
1864 // emit the condition before doing anything with selection
1865 node->getCondition()->traverse(this);
1867 // make an "if" based on the value created by the condition
1868 spv::Builder::If ifBuilder(accessChainLoad(node->getCondition()->getType()), builder);
1870 // emit the "then" statement
1871 if (node->getTrueBlock() != nullptr) {
1872 node->getTrueBlock()->traverse(this);
1873 if (result != spv::NoResult)
1874 builder.createStore(accessChainLoad(node->getTrueBlock()->getAsTyped()->getType()), result);
1877 if (node->getFalseBlock() != nullptr) {
1878 ifBuilder.makeBeginElse();
1879 // emit the "else" statement
1880 node->getFalseBlock()->traverse(this);
1881 if (result != spv::NoResult)
1882 builder.createStore(accessChainLoad(node->getFalseBlock()->getAsTyped()->getType()), result);
1885 // finish off the control flow
1886 ifBuilder.makeEndIf();
1888 if (result != spv::NoResult) {
1889 // GLSL only has r-values as the result of a :?, but
1890 // if we have an l-value, that can be more efficient if it will
1891 // become the base of a complex r-value expression, because the
1892 // next layer copies r-values into memory to use the access-chain mechanism
1893 builder.clearAccessChain();
1894 builder.setAccessChainLValue(result);
1900 bool TGlslangToSpvTraverser::visitSwitch(glslang::TVisit /* visit */, glslang::TIntermSwitch* node)
1902 // emit and get the condition before doing anything with switch
1903 node->getCondition()->traverse(this);
1904 spv::Id selector = accessChainLoad(node->getCondition()->getAsTyped()->getType());
1906 // browse the children to sort out code segments
1907 int defaultSegment = -1;
1908 std::vector<TIntermNode*> codeSegments;
1909 glslang::TIntermSequence& sequence = node->getBody()->getSequence();
1910 std::vector<int> caseValues;
1911 std::vector<int> valueIndexToSegment(sequence.size()); // note: probably not all are used, it is an overestimate
1912 for (glslang::TIntermSequence::iterator c = sequence.begin(); c != sequence.end(); ++c) {
1913 TIntermNode* child = *c;
1914 if (child->getAsBranchNode() && child->getAsBranchNode()->getFlowOp() == glslang::EOpDefault)
1915 defaultSegment = (int)codeSegments.size();
1916 else if (child->getAsBranchNode() && child->getAsBranchNode()->getFlowOp() == glslang::EOpCase) {
1917 valueIndexToSegment[caseValues.size()] = (int)codeSegments.size();
1918 caseValues.push_back(child->getAsBranchNode()->getExpression()->getAsConstantUnion()->getConstArray()[0].getIConst());
1920 codeSegments.push_back(child);
1923 // handle the case where the last code segment is missing, due to no code
1924 // statements between the last case and the end of the switch statement
1925 if ((caseValues.size() && (int)codeSegments.size() == valueIndexToSegment[caseValues.size() - 1]) ||
1926 (int)codeSegments.size() == defaultSegment)
1927 codeSegments.push_back(nullptr);
1929 // make the switch statement
1930 std::vector<spv::Block*> segmentBlocks; // returned, as the blocks allocated in the call
1931 builder.makeSwitch(selector, (int)codeSegments.size(), caseValues, valueIndexToSegment, defaultSegment, segmentBlocks);
1933 // emit all the code in the segments
1934 breakForLoop.push(false);
1935 for (unsigned int s = 0; s < codeSegments.size(); ++s) {
1936 builder.nextSwitchSegment(segmentBlocks, s);
1937 if (codeSegments[s])
1938 codeSegments[s]->traverse(this);
1940 builder.addSwitchBreak();
1944 builder.endSwitch(segmentBlocks);
1949 void TGlslangToSpvTraverser::visitConstantUnion(glslang::TIntermConstantUnion* node)
1952 spv::Id constant = createSpvConstantFromConstUnionArray(node->getType(), node->getConstArray(), nextConst, false);
1954 builder.clearAccessChain();
1955 builder.setAccessChainRValue(constant);
1958 bool TGlslangToSpvTraverser::visitLoop(glslang::TVisit /* visit */, glslang::TIntermLoop* node)
1960 auto blocks = builder.makeNewLoop();
1961 builder.createBranch(&blocks.head);
1962 // Spec requires back edges to target header blocks, and every header block
1963 // must dominate its merge block. Make a header block first to ensure these
1964 // conditions are met. By definition, it will contain OpLoopMerge, followed
1965 // by a block-ending branch. But we don't want to put any other body/test
1966 // instructions in it, since the body/test may have arbitrary instructions,
1967 // including merges of its own.
1968 builder.setBuildPoint(&blocks.head);
1969 builder.createLoopMerge(&blocks.merge, &blocks.continue_target, spv::LoopControlMaskNone);
1970 if (node->testFirst() && node->getTest()) {
1971 spv::Block& test = builder.makeNewBlock();
1972 builder.createBranch(&test);
1974 builder.setBuildPoint(&test);
1975 node->getTest()->traverse(this);
1977 accessChainLoad(node->getTest()->getType());
1978 builder.createConditionalBranch(condition, &blocks.body, &blocks.merge);
1980 builder.setBuildPoint(&blocks.body);
1981 breakForLoop.push(true);
1982 if (node->getBody())
1983 node->getBody()->traverse(this);
1984 builder.createBranch(&blocks.continue_target);
1987 builder.setBuildPoint(&blocks.continue_target);
1988 if (node->getTerminal())
1989 node->getTerminal()->traverse(this);
1990 builder.createBranch(&blocks.head);
1992 builder.createBranch(&blocks.body);
1994 breakForLoop.push(true);
1995 builder.setBuildPoint(&blocks.body);
1996 if (node->getBody())
1997 node->getBody()->traverse(this);
1998 builder.createBranch(&blocks.continue_target);
2001 builder.setBuildPoint(&blocks.continue_target);
2002 if (node->getTerminal())
2003 node->getTerminal()->traverse(this);
2004 if (node->getTest()) {
2005 node->getTest()->traverse(this);
2007 accessChainLoad(node->getTest()->getType());
2008 builder.createConditionalBranch(condition, &blocks.head, &blocks.merge);
2010 // TODO: unless there was a break/return/discard instruction
2011 // somewhere in the body, this is an infinite loop, so we should
2013 builder.createBranch(&blocks.head);
2016 builder.setBuildPoint(&blocks.merge);
2017 builder.closeLoop();
2021 bool TGlslangToSpvTraverser::visitBranch(glslang::TVisit /* visit */, glslang::TIntermBranch* node)
2023 if (node->getExpression())
2024 node->getExpression()->traverse(this);
2026 switch (node->getFlowOp()) {
2027 case glslang::EOpKill:
2028 builder.makeDiscard();
2030 case glslang::EOpBreak:
2031 if (breakForLoop.top())
2032 builder.createLoopExit();
2034 builder.addSwitchBreak();
2036 case glslang::EOpContinue:
2037 builder.createLoopContinue();
2039 case glslang::EOpReturn:
2040 if (node->getExpression()) {
2041 const glslang::TType& glslangReturnType = node->getExpression()->getType();
2042 spv::Id returnId = accessChainLoad(glslangReturnType);
2043 if (builder.getTypeId(returnId) != currentFunction->getReturnType()) {
2044 builder.clearAccessChain();
2045 spv::Id copyId = builder.createVariable(spv::StorageClassFunction, currentFunction->getReturnType());
2046 builder.setAccessChainLValue(copyId);
2047 multiTypeStore(glslangReturnType, returnId);
2048 returnId = builder.createLoad(copyId);
2050 builder.makeReturn(false, returnId);
2052 builder.makeReturn(false);
2054 builder.clearAccessChain();
2065 spv::Id TGlslangToSpvTraverser::createSpvVariable(const glslang::TIntermSymbol* node)
2067 // First, steer off constants, which are not SPIR-V variables, but
2068 // can still have a mapping to a SPIR-V Id.
2069 // This includes specialization constants.
2070 if (node->getQualifier().isConstant()) {
2071 return createSpvConstant(*node);
2074 // Now, handle actual variables
2075 spv::StorageClass storageClass = TranslateStorageClass(node->getType());
2076 spv::Id spvType = convertGlslangToSpvType(node->getType());
2078 const char* name = node->getName().c_str();
2079 if (glslang::IsAnonymous(name))
2082 return builder.createVariable(storageClass, spvType, name);
2085 // Return type Id of the sampled type.
2086 spv::Id TGlslangToSpvTraverser::getSampledType(const glslang::TSampler& sampler)
2088 switch (sampler.type) {
2089 case glslang::EbtFloat: return builder.makeFloatType(32);
2090 case glslang::EbtInt: return builder.makeIntType(32);
2091 case glslang::EbtUint: return builder.makeUintType(32);
2094 return builder.makeFloatType(32);
2098 // If node is a swizzle operation, return the type that should be used if
2099 // the swizzle base is first consumed by another operation, before the swizzle
2101 spv::Id TGlslangToSpvTraverser::getInvertedSwizzleType(const glslang::TIntermTyped& node)
2103 if (node.getAsOperator() &&
2104 node.getAsOperator()->getOp() == glslang::EOpVectorSwizzle)
2105 return convertGlslangToSpvType(node.getAsBinaryNode()->getLeft()->getType());
2110 // When inverting a swizzle with a parent op, this function
2111 // will apply the swizzle operation to a completed parent operation.
2112 spv::Id TGlslangToSpvTraverser::createInvertedSwizzle(spv::Decoration precision, const glslang::TIntermTyped& node, spv::Id parentResult)
2114 std::vector<unsigned> swizzle;
2115 convertSwizzle(*node.getAsBinaryNode()->getRight()->getAsAggregate(), swizzle);
2116 return builder.createRvalueSwizzle(precision, convertGlslangToSpvType(node.getType()), parentResult, swizzle);
2119 // Convert a glslang AST swizzle node to a swizzle vector for building SPIR-V.
2120 void TGlslangToSpvTraverser::convertSwizzle(const glslang::TIntermAggregate& node, std::vector<unsigned>& swizzle)
2122 const glslang::TIntermSequence& swizzleSequence = node.getSequence();
2123 for (int i = 0; i < (int)swizzleSequence.size(); ++i)
2124 swizzle.push_back(swizzleSequence[i]->getAsConstantUnion()->getConstArray()[0].getIConst());
2127 // Convert from a glslang type to an SPV type, by calling into a
2128 // recursive version of this function. This establishes the inherited
2129 // layout state rooted from the top-level type.
2130 spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& type)
2132 return convertGlslangToSpvType(type, getExplicitLayout(type), type.getQualifier());
2135 // Do full recursive conversion of an arbitrary glslang type to a SPIR-V Id.
2136 // explicitLayout can be kept the same throughout the hierarchical recursive walk.
2137 // Mutually recursive with convertGlslangStructToSpvType().
2138 spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& type, glslang::TLayoutPacking explicitLayout, const glslang::TQualifier& qualifier)
2140 spv::Id spvType = spv::NoResult;
2142 switch (type.getBasicType()) {
2143 case glslang::EbtVoid:
2144 spvType = builder.makeVoidType();
2145 assert (! type.isArray());
2147 case glslang::EbtFloat:
2148 spvType = builder.makeFloatType(32);
2150 case glslang::EbtDouble:
2151 spvType = builder.makeFloatType(64);
2153 #ifdef AMD_EXTENSIONS
2154 case glslang::EbtFloat16:
2155 builder.addExtension(spv::E_SPV_AMD_gpu_shader_half_float);
2156 spvType = builder.makeFloatType(16);
2159 case glslang::EbtBool:
2160 // "transparent" bool doesn't exist in SPIR-V. The GLSL convention is
2161 // a 32-bit int where non-0 means true.
2162 if (explicitLayout != glslang::ElpNone)
2163 spvType = builder.makeUintType(32);
2165 spvType = builder.makeBoolType();
2167 case glslang::EbtInt:
2168 spvType = builder.makeIntType(32);
2170 case glslang::EbtUint:
2171 spvType = builder.makeUintType(32);
2173 case glslang::EbtInt64:
2174 builder.addCapability(spv::CapabilityInt64);
2175 spvType = builder.makeIntType(64);
2177 case glslang::EbtUint64:
2178 builder.addCapability(spv::CapabilityInt64);
2179 spvType = builder.makeUintType(64);
2181 case glslang::EbtAtomicUint:
2182 builder.addCapability(spv::CapabilityAtomicStorage);
2183 spvType = builder.makeUintType(32);
2185 case glslang::EbtSampler:
2187 const glslang::TSampler& sampler = type.getSampler();
2188 if (sampler.sampler) {
2190 spvType = builder.makeSamplerType();
2192 // an image is present, make its type
2193 spvType = builder.makeImageType(getSampledType(sampler), TranslateDimensionality(sampler), sampler.shadow, sampler.arrayed, sampler.ms,
2194 sampler.image ? 2 : 1, TranslateImageFormat(type));
2195 if (sampler.combined) {
2196 // already has both image and sampler, make the combined type
2197 spvType = builder.makeSampledImageType(spvType);
2202 case glslang::EbtStruct:
2203 case glslang::EbtBlock:
2205 // If we've seen this struct type, return it
2206 const glslang::TTypeList* glslangMembers = type.getStruct();
2208 // Try to share structs for different layouts, but not yet for other
2209 // kinds of qualification (primarily not yet including interpolant qualification).
2210 if (! HasNonLayoutQualifiers(type, qualifier))
2211 spvType = structMap[explicitLayout][qualifier.layoutMatrix][glslangMembers];
2212 if (spvType != spv::NoResult)
2215 // else, we haven't seen it...
2216 if (type.getBasicType() == glslang::EbtBlock)
2217 memberRemapper[glslangMembers].resize(glslangMembers->size());
2218 spvType = convertGlslangStructToSpvType(type, glslangMembers, explicitLayout, qualifier);
2226 if (type.isMatrix())
2227 spvType = builder.makeMatrixType(spvType, type.getMatrixCols(), type.getMatrixRows());
2229 // If this variable has a vector element count greater than 1, create a SPIR-V vector
2230 if (type.getVectorSize() > 1)
2231 spvType = builder.makeVectorType(spvType, type.getVectorSize());
2234 if (type.isArray()) {
2235 int stride = 0; // keep this 0 unless doing an explicit layout; 0 will mean no decoration, no stride
2237 // Do all but the outer dimension
2238 if (type.getArraySizes()->getNumDims() > 1) {
2239 // We need to decorate array strides for types needing explicit layout, except blocks.
2240 if (explicitLayout != glslang::ElpNone && type.getBasicType() != glslang::EbtBlock) {
2241 // Use a dummy glslang type for querying internal strides of
2242 // arrays of arrays, but using just a one-dimensional array.
2243 glslang::TType simpleArrayType(type, 0); // deference type of the array
2244 while (simpleArrayType.getArraySizes().getNumDims() > 1)
2245 simpleArrayType.getArraySizes().dereference();
2247 // Will compute the higher-order strides here, rather than making a whole
2248 // pile of types and doing repetitive recursion on their contents.
2249 stride = getArrayStride(simpleArrayType, explicitLayout, qualifier.layoutMatrix);
2253 for (int dim = type.getArraySizes()->getNumDims() - 1; dim > 0; --dim) {
2254 spvType = builder.makeArrayType(spvType, makeArraySizeId(*type.getArraySizes(), dim), stride);
2256 builder.addDecoration(spvType, spv::DecorationArrayStride, stride);
2257 stride *= type.getArraySizes()->getDimSize(dim);
2260 // single-dimensional array, and don't yet have stride
2262 // We need to decorate array strides for types needing explicit layout, except blocks.
2263 if (explicitLayout != glslang::ElpNone && type.getBasicType() != glslang::EbtBlock)
2264 stride = getArrayStride(type, explicitLayout, qualifier.layoutMatrix);
2267 // Do the outer dimension, which might not be known for a runtime-sized array
2268 if (type.isRuntimeSizedArray()) {
2269 spvType = builder.makeRuntimeArray(spvType);
2271 assert(type.getOuterArraySize() > 0);
2272 spvType = builder.makeArrayType(spvType, makeArraySizeId(*type.getArraySizes(), 0), stride);
2275 builder.addDecoration(spvType, spv::DecorationArrayStride, stride);
2281 // TODO: this functionality should exist at a higher level, in creating the AST
2283 // Identify interface members that don't have their required extension turned on.
2285 bool TGlslangToSpvTraverser::filterMember(const glslang::TType& member)
2287 auto& extensions = glslangIntermediate->getRequestedExtensions();
2289 if (member.getFieldName() == "gl_ViewportMask" &&
2290 extensions.find("GL_NV_viewport_array2") == extensions.end())
2292 if (member.getFieldName() == "gl_SecondaryViewportMaskNV" &&
2293 extensions.find("GL_NV_stereo_view_rendering") == extensions.end())
2295 if (member.getFieldName() == "gl_SecondaryPositionNV" &&
2296 extensions.find("GL_NV_stereo_view_rendering") == extensions.end())
2298 if (member.getFieldName() == "gl_PositionPerViewNV" &&
2299 extensions.find("GL_NVX_multiview_per_view_attributes") == extensions.end())
2301 if (member.getFieldName() == "gl_ViewportMaskPerViewNV" &&
2302 extensions.find("GL_NVX_multiview_per_view_attributes") == extensions.end())
2308 // Do full recursive conversion of a glslang structure (or block) type to a SPIR-V Id.
2309 // explicitLayout can be kept the same throughout the hierarchical recursive walk.
2310 // Mutually recursive with convertGlslangToSpvType().
2311 spv::Id TGlslangToSpvTraverser::convertGlslangStructToSpvType(const glslang::TType& type,
2312 const glslang::TTypeList* glslangMembers,
2313 glslang::TLayoutPacking explicitLayout,
2314 const glslang::TQualifier& qualifier)
2316 // Create a vector of struct types for SPIR-V to consume
2317 std::vector<spv::Id> spvMembers;
2318 int memberDelta = 0; // how much the member's index changes from glslang to SPIR-V, normally 0, except sometimes for blocks
2319 int locationOffset = 0; // for use across struct members, when they are called recursively
2320 for (int i = 0; i < (int)glslangMembers->size(); i++) {
2321 glslang::TType& glslangMember = *(*glslangMembers)[i].type;
2322 if (glslangMember.hiddenMember()) {
2324 if (type.getBasicType() == glslang::EbtBlock)
2325 memberRemapper[glslangMembers][i] = -1;
2327 if (type.getBasicType() == glslang::EbtBlock) {
2328 memberRemapper[glslangMembers][i] = i - memberDelta;
2329 if (filterMember(glslangMember))
2332 // modify just this child's view of the qualifier
2333 glslang::TQualifier memberQualifier = glslangMember.getQualifier();
2334 InheritQualifiers(memberQualifier, qualifier);
2336 // manually inherit location; it's more complex
2337 if (! memberQualifier.hasLocation() && qualifier.hasLocation())
2338 memberQualifier.layoutLocation = qualifier.layoutLocation + locationOffset;
2339 if (qualifier.hasLocation())
2340 locationOffset += glslangIntermediate->computeTypeLocationSize(glslangMember);
2343 spvMembers.push_back(convertGlslangToSpvType(glslangMember, explicitLayout, memberQualifier));
2347 // Make the SPIR-V type
2348 spv::Id spvType = builder.makeStructType(spvMembers, type.getTypeName().c_str());
2349 if (! HasNonLayoutQualifiers(type, qualifier))
2350 structMap[explicitLayout][qualifier.layoutMatrix][glslangMembers] = spvType;
2353 decorateStructType(type, glslangMembers, explicitLayout, qualifier, spvType);
2358 void TGlslangToSpvTraverser::decorateStructType(const glslang::TType& type,
2359 const glslang::TTypeList* glslangMembers,
2360 glslang::TLayoutPacking explicitLayout,
2361 const glslang::TQualifier& qualifier,
2364 // Name and decorate the non-hidden members
2366 int locationOffset = 0; // for use within the members of this struct
2367 for (int i = 0; i < (int)glslangMembers->size(); i++) {
2368 glslang::TType& glslangMember = *(*glslangMembers)[i].type;
2370 if (type.getBasicType() == glslang::EbtBlock) {
2371 member = memberRemapper[glslangMembers][i];
2372 if (filterMember(glslangMember))
2376 // modify just this child's view of the qualifier
2377 glslang::TQualifier memberQualifier = glslangMember.getQualifier();
2378 InheritQualifiers(memberQualifier, qualifier);
2380 // using -1 above to indicate a hidden member
2382 builder.addMemberName(spvType, member, glslangMember.getFieldName().c_str());
2383 addMemberDecoration(spvType, member, TranslateLayoutDecoration(glslangMember, memberQualifier.layoutMatrix));
2384 addMemberDecoration(spvType, member, TranslatePrecisionDecoration(glslangMember));
2385 // Add interpolation and auxiliary storage decorations only to top-level members of Input and Output storage classes
2386 if (type.getQualifier().storage == glslang::EvqVaryingIn ||
2387 type.getQualifier().storage == glslang::EvqVaryingOut) {
2388 if (type.getBasicType() == glslang::EbtBlock ||
2389 glslangIntermediate->getSource() == glslang::EShSourceHlsl) {
2390 addMemberDecoration(spvType, member, TranslateInterpolationDecoration(memberQualifier));
2391 addMemberDecoration(spvType, member, TranslateAuxiliaryStorageDecoration(memberQualifier));
2394 addMemberDecoration(spvType, member, TranslateInvariantDecoration(memberQualifier));
2396 if (qualifier.storage == glslang::EvqBuffer) {
2397 std::vector<spv::Decoration> memory;
2398 TranslateMemoryDecoration(memberQualifier, memory);
2399 for (unsigned int i = 0; i < memory.size(); ++i)
2400 addMemberDecoration(spvType, member, memory[i]);
2403 // Compute location decoration; tricky based on whether inheritance is at play and
2404 // what kind of container we have, etc.
2405 // TODO: This algorithm (and it's cousin above doing almost the same thing) should
2406 // probably move to the linker stage of the front end proper, and just have the
2407 // answer sitting already distributed throughout the individual member locations.
2408 int location = -1; // will only decorate if present or inherited
2409 // Ignore member locations if the container is an array, as that's
2410 // ill-specified and decisions have been made to not allow this anyway.
2411 // The object itself must have a location, and that comes out from decorating the object,
2412 // not the type (this code decorates types).
2413 if (! type.isArray()) {
2414 if (memberQualifier.hasLocation()) { // no inheritance, or override of inheritance
2415 // struct members should not have explicit locations
2416 assert(type.getBasicType() != glslang::EbtStruct);
2417 location = memberQualifier.layoutLocation;
2418 } else if (type.getBasicType() != glslang::EbtBlock) {
2419 // If it is a not a Block, (...) Its members are assigned consecutive locations (...)
2420 // The members, and their nested types, must not themselves have Location decorations.
2421 } else if (qualifier.hasLocation()) // inheritance
2422 location = qualifier.layoutLocation + locationOffset;
2425 builder.addMemberDecoration(spvType, member, spv::DecorationLocation, location);
2427 if (qualifier.hasLocation()) // track for upcoming inheritance
2428 locationOffset += glslangIntermediate->computeTypeLocationSize(glslangMember);
2430 // component, XFB, others
2431 if (glslangMember.getQualifier().hasComponent())
2432 builder.addMemberDecoration(spvType, member, spv::DecorationComponent, glslangMember.getQualifier().layoutComponent);
2433 if (glslangMember.getQualifier().hasXfbOffset())
2434 builder.addMemberDecoration(spvType, member, spv::DecorationOffset, glslangMember.getQualifier().layoutXfbOffset);
2435 else if (explicitLayout != glslang::ElpNone) {
2436 // figure out what to do with offset, which is accumulating
2438 updateMemberOffset(type, glslangMember, offset, nextOffset, explicitLayout, memberQualifier.layoutMatrix);
2440 builder.addMemberDecoration(spvType, member, spv::DecorationOffset, offset);
2441 offset = nextOffset;
2444 if (glslangMember.isMatrix() && explicitLayout != glslang::ElpNone)
2445 builder.addMemberDecoration(spvType, member, spv::DecorationMatrixStride, getMatrixStride(glslangMember, explicitLayout, memberQualifier.layoutMatrix));
2447 // built-in variable decorations
2448 spv::BuiltIn builtIn = TranslateBuiltInDecoration(glslangMember.getQualifier().builtIn, true);
2449 if (builtIn != spv::BuiltInMax)
2450 addMemberDecoration(spvType, member, spv::DecorationBuiltIn, (int)builtIn);
2452 #ifdef NV_EXTENSIONS
2453 if (builtIn == spv::BuiltInLayer) {
2454 // SPV_NV_viewport_array2 extension
2455 if (glslangMember.getQualifier().layoutViewportRelative){
2456 addMemberDecoration(spvType, member, (spv::Decoration)spv::DecorationViewportRelativeNV);
2457 builder.addCapability(spv::CapabilityShaderViewportMaskNV);
2458 builder.addExtension(spv::E_SPV_NV_viewport_array2);
2460 if (glslangMember.getQualifier().layoutSecondaryViewportRelativeOffset != -2048){
2461 addMemberDecoration(spvType, member, (spv::Decoration)spv::DecorationSecondaryViewportRelativeNV, glslangMember.getQualifier().layoutSecondaryViewportRelativeOffset);
2462 builder.addCapability(spv::CapabilityShaderStereoViewNV);
2463 builder.addExtension(spv::E_SPV_NV_stereo_view_rendering);
2466 if (glslangMember.getQualifier().layoutPassthrough) {
2467 addMemberDecoration(spvType, member, (spv::Decoration)spv::DecorationPassthroughNV);
2468 builder.addCapability(spv::CapabilityGeometryShaderPassthroughNV);
2469 builder.addExtension(spv::E_SPV_NV_geometry_shader_passthrough);
2475 // Decorate the structure
2476 addDecoration(spvType, TranslateLayoutDecoration(type, qualifier.layoutMatrix));
2477 addDecoration(spvType, TranslateBlockDecoration(type));
2478 if (type.getQualifier().hasStream() && glslangIntermediate->isMultiStream()) {
2479 builder.addCapability(spv::CapabilityGeometryStreams);
2480 builder.addDecoration(spvType, spv::DecorationStream, type.getQualifier().layoutStream);
2482 if (glslangIntermediate->getXfbMode()) {
2483 builder.addCapability(spv::CapabilityTransformFeedback);
2484 if (type.getQualifier().hasXfbStride())
2485 builder.addDecoration(spvType, spv::DecorationXfbStride, type.getQualifier().layoutXfbStride);
2486 if (type.getQualifier().hasXfbBuffer())
2487 builder.addDecoration(spvType, spv::DecorationXfbBuffer, type.getQualifier().layoutXfbBuffer);
2491 // Turn the expression forming the array size into an id.
2492 // This is not quite trivial, because of specialization constants.
2493 // Sometimes, a raw constant is turned into an Id, and sometimes
2494 // a specialization constant expression is.
2495 spv::Id TGlslangToSpvTraverser::makeArraySizeId(const glslang::TArraySizes& arraySizes, int dim)
2497 // First, see if this is sized with a node, meaning a specialization constant:
2498 glslang::TIntermTyped* specNode = arraySizes.getDimNode(dim);
2499 if (specNode != nullptr) {
2500 builder.clearAccessChain();
2501 specNode->traverse(this);
2502 return accessChainLoad(specNode->getAsTyped()->getType());
2505 // Otherwise, need a compile-time (front end) size, get it:
2506 int size = arraySizes.getDimSize(dim);
2508 return builder.makeUintConstant(size);
2511 // Wrap the builder's accessChainLoad to:
2512 // - localize handling of RelaxedPrecision
2513 // - use the SPIR-V inferred type instead of another conversion of the glslang type
2514 // (avoids unnecessary work and possible type punning for structures)
2515 // - do conversion of concrete to abstract type
2516 spv::Id TGlslangToSpvTraverser::accessChainLoad(const glslang::TType& type)
2518 spv::Id nominalTypeId = builder.accessChainGetInferredType();
2519 spv::Id loadedId = builder.accessChainLoad(TranslatePrecisionDecoration(type), nominalTypeId);
2521 // Need to convert to abstract types when necessary
2522 if (type.getBasicType() == glslang::EbtBool) {
2523 if (builder.isScalarType(nominalTypeId)) {
2524 // Conversion for bool
2525 spv::Id boolType = builder.makeBoolType();
2526 if (nominalTypeId != boolType)
2527 loadedId = builder.createBinOp(spv::OpINotEqual, boolType, loadedId, builder.makeUintConstant(0));
2528 } else if (builder.isVectorType(nominalTypeId)) {
2529 // Conversion for bvec
2530 int vecSize = builder.getNumTypeComponents(nominalTypeId);
2531 spv::Id bvecType = builder.makeVectorType(builder.makeBoolType(), vecSize);
2532 if (nominalTypeId != bvecType)
2533 loadedId = builder.createBinOp(spv::OpINotEqual, bvecType, loadedId, makeSmearedConstant(builder.makeUintConstant(0), vecSize));
2540 // Wrap the builder's accessChainStore to:
2541 // - do conversion of concrete to abstract type
2543 // Implicitly uses the existing builder.accessChain as the storage target.
2544 void TGlslangToSpvTraverser::accessChainStore(const glslang::TType& type, spv::Id rvalue)
2546 // Need to convert to abstract types when necessary
2547 if (type.getBasicType() == glslang::EbtBool) {
2548 spv::Id nominalTypeId = builder.accessChainGetInferredType();
2550 if (builder.isScalarType(nominalTypeId)) {
2551 // Conversion for bool
2552 spv::Id boolType = builder.makeBoolType();
2553 if (nominalTypeId != boolType) {
2554 spv::Id zero = builder.makeUintConstant(0);
2555 spv::Id one = builder.makeUintConstant(1);
2556 rvalue = builder.createTriOp(spv::OpSelect, nominalTypeId, rvalue, one, zero);
2558 } else if (builder.isVectorType(nominalTypeId)) {
2559 // Conversion for bvec
2560 int vecSize = builder.getNumTypeComponents(nominalTypeId);
2561 spv::Id bvecType = builder.makeVectorType(builder.makeBoolType(), vecSize);
2562 if (nominalTypeId != bvecType) {
2563 spv::Id zero = makeSmearedConstant(builder.makeUintConstant(0), vecSize);
2564 spv::Id one = makeSmearedConstant(builder.makeUintConstant(1), vecSize);
2565 rvalue = builder.createTriOp(spv::OpSelect, nominalTypeId, rvalue, one, zero);
2570 builder.accessChainStore(rvalue);
2573 // For storing when types match at the glslang level, but not might match at the
2576 // This especially happens when a single glslang type expands to multiple
2577 // SPIR-V types, like a struct that is used in a member-undecorated way as well
2578 // as in a member-decorated way.
2580 // NOTE: This function can handle any store request; if it's not special it
2581 // simplifies to a simple OpStore.
2583 // Implicitly uses the existing builder.accessChain as the storage target.
2584 void TGlslangToSpvTraverser::multiTypeStore(const glslang::TType& type, spv::Id rValue)
2586 // we only do the complex path here if it's an aggregate
2587 if (! type.isStruct() && ! type.isArray()) {
2588 accessChainStore(type, rValue);
2592 // and, it has to be a case of type aliasing
2593 spv::Id rType = builder.getTypeId(rValue);
2594 spv::Id lValue = builder.accessChainGetLValue();
2595 spv::Id lType = builder.getContainedTypeId(builder.getTypeId(lValue));
2596 if (lType == rType) {
2597 accessChainStore(type, rValue);
2601 // Recursively (as needed) copy an aggregate type to a different aggregate type,
2602 // where the two types were the same type in GLSL. This requires member
2603 // by member copy, recursively.
2605 // If an array, copy element by element.
2606 if (type.isArray()) {
2607 glslang::TType glslangElementType(type, 0);
2608 spv::Id elementRType = builder.getContainedTypeId(rType);
2609 for (int index = 0; index < type.getOuterArraySize(); ++index) {
2610 // get the source member
2611 spv::Id elementRValue = builder.createCompositeExtract(rValue, elementRType, index);
2613 // set up the target storage
2614 builder.clearAccessChain();
2615 builder.setAccessChainLValue(lValue);
2616 builder.accessChainPush(builder.makeIntConstant(index));
2619 multiTypeStore(glslangElementType, elementRValue);
2622 assert(type.isStruct());
2624 // loop over structure members
2625 const glslang::TTypeList& members = *type.getStruct();
2626 for (int m = 0; m < (int)members.size(); ++m) {
2627 const glslang::TType& glslangMemberType = *members[m].type;
2629 // get the source member
2630 spv::Id memberRType = builder.getContainedTypeId(rType, m);
2631 spv::Id memberRValue = builder.createCompositeExtract(rValue, memberRType, m);
2633 // set up the target storage
2634 builder.clearAccessChain();
2635 builder.setAccessChainLValue(lValue);
2636 builder.accessChainPush(builder.makeIntConstant(m));
2639 multiTypeStore(glslangMemberType, memberRValue);
2644 // Decide whether or not this type should be
2645 // decorated with offsets and strides, and if so
2646 // whether std140 or std430 rules should be applied.
2647 glslang::TLayoutPacking TGlslangToSpvTraverser::getExplicitLayout(const glslang::TType& type) const
2649 // has to be a block
2650 if (type.getBasicType() != glslang::EbtBlock)
2651 return glslang::ElpNone;
2653 // has to be a uniform or buffer block
2654 if (type.getQualifier().storage != glslang::EvqUniform &&
2655 type.getQualifier().storage != glslang::EvqBuffer)
2656 return glslang::ElpNone;
2658 // return the layout to use
2659 switch (type.getQualifier().layoutPacking) {
2660 case glslang::ElpStd140:
2661 case glslang::ElpStd430:
2662 return type.getQualifier().layoutPacking;
2664 return glslang::ElpNone;
2668 // Given an array type, returns the integer stride required for that array
2669 int TGlslangToSpvTraverser::getArrayStride(const glslang::TType& arrayType, glslang::TLayoutPacking explicitLayout, glslang::TLayoutMatrix matrixLayout)
2673 glslangIntermediate->getBaseAlignment(arrayType, size, stride, explicitLayout == glslang::ElpStd140, matrixLayout == glslang::ElmRowMajor);
2678 // Given a matrix type, or array (of array) of matrixes type, returns the integer stride required for that matrix
2679 // when used as a member of an interface block
2680 int TGlslangToSpvTraverser::getMatrixStride(const glslang::TType& matrixType, glslang::TLayoutPacking explicitLayout, glslang::TLayoutMatrix matrixLayout)
2682 glslang::TType elementType;
2683 elementType.shallowCopy(matrixType);
2684 elementType.clearArraySizes();
2688 glslangIntermediate->getBaseAlignment(elementType, size, stride, explicitLayout == glslang::ElpStd140, matrixLayout == glslang::ElmRowMajor);
2693 // Given a member type of a struct, realign the current offset for it, and compute
2694 // the next (not yet aligned) offset for the next member, which will get aligned
2695 // on the next call.
2696 // 'currentOffset' should be passed in already initialized, ready to modify, and reflecting
2697 // the migration of data from nextOffset -> currentOffset. It should be -1 on the first call.
2698 // -1 means a non-forced member offset (no decoration needed).
2699 void TGlslangToSpvTraverser::updateMemberOffset(const glslang::TType& /*structType*/, const glslang::TType& memberType, int& currentOffset, int& nextOffset,
2700 glslang::TLayoutPacking explicitLayout, glslang::TLayoutMatrix matrixLayout)
2702 // this will get a positive value when deemed necessary
2705 // override anything in currentOffset with user-set offset
2706 if (memberType.getQualifier().hasOffset())
2707 currentOffset = memberType.getQualifier().layoutOffset;
2709 // It could be that current linker usage in glslang updated all the layoutOffset,
2710 // in which case the following code does not matter. But, that's not quite right
2711 // once cross-compilation unit GLSL validation is done, as the original user
2712 // settings are needed in layoutOffset, and then the following will come into play.
2714 if (explicitLayout == glslang::ElpNone) {
2715 if (! memberType.getQualifier().hasOffset())
2721 // Getting this far means we need explicit offsets
2722 if (currentOffset < 0)
2725 // Now, currentOffset is valid (either 0, or from a previous nextOffset),
2726 // but possibly not yet correctly aligned.
2730 int memberAlignment = glslangIntermediate->getBaseAlignment(memberType, memberSize, dummyStride, explicitLayout == glslang::ElpStd140, matrixLayout == glslang::ElmRowMajor);
2732 // Adjust alignment for HLSL rules
2733 if (glslangIntermediate->usingHlslOFfsets() &&
2734 ! memberType.isArray() && memberType.isVector()) {
2736 int componentAlignment = glslangIntermediate->getBaseAlignmentScalar(memberType, dummySize);
2737 if (componentAlignment <= 4)
2738 memberAlignment = componentAlignment;
2741 // Bump up to member alignment
2742 glslang::RoundToPow2(currentOffset, memberAlignment);
2744 // Bump up to vec4 if there is a bad straddle
2745 if (glslangIntermediate->improperStraddle(memberType, memberSize, currentOffset))
2746 glslang::RoundToPow2(currentOffset, 16);
2748 nextOffset = currentOffset + memberSize;
2751 void TGlslangToSpvTraverser::declareUseOfStructMember(const glslang::TTypeList& members, int glslangMember)
2753 const glslang::TBuiltInVariable glslangBuiltIn = members[glslangMember].type->getQualifier().builtIn;
2754 switch (glslangBuiltIn)
2756 case glslang::EbvClipDistance:
2757 case glslang::EbvCullDistance:
2758 case glslang::EbvPointSize:
2759 #ifdef NV_EXTENSIONS
2760 case glslang::EbvLayer:
2761 case glslang::EbvViewportIndex:
2762 case glslang::EbvViewportMaskNV:
2763 case glslang::EbvSecondaryPositionNV:
2764 case glslang::EbvSecondaryViewportMaskNV:
2765 case glslang::EbvPositionPerViewNV:
2766 case glslang::EbvViewportMaskPerViewNV:
2768 // Generate the associated capability. Delegate to TranslateBuiltInDecoration.
2769 // Alternately, we could just call this for any glslang built-in, since the
2770 // capability already guards against duplicates.
2771 TranslateBuiltInDecoration(glslangBuiltIn, false);
2774 // Capabilities were already generated when the struct was declared.
2779 bool TGlslangToSpvTraverser::isShaderEntryPoint(const glslang::TIntermAggregate* node)
2781 return node->getName().compare(glslangIntermediate->getEntryPointMangledName().c_str()) == 0;
2784 // Make all the functions, skeletally, without actually visiting their bodies.
2785 void TGlslangToSpvTraverser::makeFunctions(const glslang::TIntermSequence& glslFunctions)
2787 for (int f = 0; f < (int)glslFunctions.size(); ++f) {
2788 glslang::TIntermAggregate* glslFunction = glslFunctions[f]->getAsAggregate();
2789 if (! glslFunction || glslFunction->getOp() != glslang::EOpFunction || isShaderEntryPoint(glslFunction))
2792 // We're on a user function. Set up the basic interface for the function now,
2793 // so that it's available to call. Translating the body will happen later.
2795 // Typically (except for a "const in" parameter), an address will be passed to the
2796 // function. What it is an address of varies:
2798 // - "in" parameters not marked as "const" can be written to without modifying the calling
2799 // argument so that write needs to be to a copy, hence the address of a copy works.
2801 // - "const in" parameters can just be the r-value, as no writes need occur.
2803 // - "out" and "inout" arguments can't be done as pointers to the calling argument, because
2804 // GLSL has copy-in/copy-out semantics. They can be handled though with a pointer to a copy.
2806 std::vector<spv::Id> paramTypes;
2807 std::vector<spv::Decoration> paramPrecisions;
2808 glslang::TIntermSequence& parameters = glslFunction->getSequence()[0]->getAsAggregate()->getSequence();
2810 bool implicitThis = (int)parameters.size() > 0 && parameters[0]->getAsSymbolNode()->getName() == glslangIntermediate->implicitThisName;
2812 for (int p = 0; p < (int)parameters.size(); ++p) {
2813 const glslang::TType& paramType = parameters[p]->getAsTyped()->getType();
2814 spv::Id typeId = convertGlslangToSpvType(paramType);
2815 // can we pass by reference?
2816 if (paramType.containsOpaque() || // sampler, etc.
2817 (paramType.getBasicType() == glslang::EbtBlock &&
2818 paramType.getQualifier().storage == glslang::EvqBuffer) || // SSBO
2819 (p == 0 && implicitThis)) // implicit 'this'
2820 typeId = builder.makePointer(TranslateStorageClass(paramType), typeId);
2821 else if (paramType.getQualifier().storage != glslang::EvqConstReadOnly)
2822 typeId = builder.makePointer(spv::StorageClassFunction, typeId);
2824 rValueParameters.insert(parameters[p]->getAsSymbolNode()->getId());
2825 paramPrecisions.push_back(TranslatePrecisionDecoration(paramType));
2826 paramTypes.push_back(typeId);
2829 spv::Block* functionBlock;
2830 spv::Function *function = builder.makeFunctionEntry(TranslatePrecisionDecoration(glslFunction->getType()),
2831 convertGlslangToSpvType(glslFunction->getType()),
2832 glslFunction->getName().c_str(), paramTypes, paramPrecisions, &functionBlock);
2834 function->setImplicitThis();
2836 // Track function to emit/call later
2837 functionMap[glslFunction->getName().c_str()] = function;
2839 // Set the parameter id's
2840 for (int p = 0; p < (int)parameters.size(); ++p) {
2841 symbolValues[parameters[p]->getAsSymbolNode()->getId()] = function->getParamId(p);
2843 builder.addName(function->getParamId(p), parameters[p]->getAsSymbolNode()->getName().c_str());
2848 // Process all the initializers, while skipping the functions and link objects
2849 void TGlslangToSpvTraverser::makeGlobalInitializers(const glslang::TIntermSequence& initializers)
2851 builder.setBuildPoint(shaderEntry->getLastBlock());
2852 for (int i = 0; i < (int)initializers.size(); ++i) {
2853 glslang::TIntermAggregate* initializer = initializers[i]->getAsAggregate();
2854 if (initializer && initializer->getOp() != glslang::EOpFunction && initializer->getOp() != glslang::EOpLinkerObjects) {
2856 // We're on a top-level node that's not a function. Treat as an initializer, whose
2857 // code goes into the beginning of the entry point.
2858 initializer->traverse(this);
2863 // Process all the functions, while skipping initializers.
2864 void TGlslangToSpvTraverser::visitFunctions(const glslang::TIntermSequence& glslFunctions)
2866 for (int f = 0; f < (int)glslFunctions.size(); ++f) {
2867 glslang::TIntermAggregate* node = glslFunctions[f]->getAsAggregate();
2868 if (node && (node->getOp() == glslang::EOpFunction || node->getOp() == glslang::EOpLinkerObjects))
2869 node->traverse(this);
2873 void TGlslangToSpvTraverser::handleFunctionEntry(const glslang::TIntermAggregate* node)
2875 // SPIR-V functions should already be in the functionMap from the prepass
2876 // that called makeFunctions().
2877 currentFunction = functionMap[node->getName().c_str()];
2878 spv::Block* functionBlock = currentFunction->getEntryBlock();
2879 builder.setBuildPoint(functionBlock);
2882 void TGlslangToSpvTraverser::translateArguments(const glslang::TIntermAggregate& node, std::vector<spv::Id>& arguments)
2884 const glslang::TIntermSequence& glslangArguments = node.getSequence();
2886 glslang::TSampler sampler = {};
2887 bool cubeCompare = false;
2888 if (node.isTexture() || node.isImage()) {
2889 sampler = glslangArguments[0]->getAsTyped()->getType().getSampler();
2890 cubeCompare = sampler.dim == glslang::EsdCube && sampler.arrayed && sampler.shadow;
2893 for (int i = 0; i < (int)glslangArguments.size(); ++i) {
2894 builder.clearAccessChain();
2895 glslangArguments[i]->traverse(this);
2897 // Special case l-value operands
2898 bool lvalue = false;
2899 switch (node.getOp()) {
2900 case glslang::EOpImageAtomicAdd:
2901 case glslang::EOpImageAtomicMin:
2902 case glslang::EOpImageAtomicMax:
2903 case glslang::EOpImageAtomicAnd:
2904 case glslang::EOpImageAtomicOr:
2905 case glslang::EOpImageAtomicXor:
2906 case glslang::EOpImageAtomicExchange:
2907 case glslang::EOpImageAtomicCompSwap:
2911 case glslang::EOpSparseImageLoad:
2912 if ((sampler.ms && i == 3) || (! sampler.ms && i == 2))
2915 case glslang::EOpSparseTexture:
2916 if ((cubeCompare && i == 3) || (! cubeCompare && i == 2))
2919 case glslang::EOpSparseTextureClamp:
2920 if ((cubeCompare && i == 4) || (! cubeCompare && i == 3))
2923 case glslang::EOpSparseTextureLod:
2924 case glslang::EOpSparseTextureOffset:
2928 case glslang::EOpSparseTextureFetch:
2929 if ((sampler.dim != glslang::EsdRect && i == 3) || (sampler.dim == glslang::EsdRect && i == 2))
2932 case glslang::EOpSparseTextureFetchOffset:
2933 if ((sampler.dim != glslang::EsdRect && i == 4) || (sampler.dim == glslang::EsdRect && i == 3))
2936 case glslang::EOpSparseTextureLodOffset:
2937 case glslang::EOpSparseTextureGrad:
2938 case glslang::EOpSparseTextureOffsetClamp:
2942 case glslang::EOpSparseTextureGradOffset:
2943 case glslang::EOpSparseTextureGradClamp:
2947 case glslang::EOpSparseTextureGradOffsetClamp:
2951 case glslang::EOpSparseTextureGather:
2952 if ((sampler.shadow && i == 3) || (! sampler.shadow && i == 2))
2955 case glslang::EOpSparseTextureGatherOffset:
2956 case glslang::EOpSparseTextureGatherOffsets:
2957 if ((sampler.shadow && i == 4) || (! sampler.shadow && i == 3))
2965 arguments.push_back(builder.accessChainGetLValue());
2967 arguments.push_back(accessChainLoad(glslangArguments[i]->getAsTyped()->getType()));
2971 void TGlslangToSpvTraverser::translateArguments(glslang::TIntermUnary& node, std::vector<spv::Id>& arguments)
2973 builder.clearAccessChain();
2974 node.getOperand()->traverse(this);
2975 arguments.push_back(accessChainLoad(node.getOperand()->getType()));
2978 spv::Id TGlslangToSpvTraverser::createImageTextureFunctionCall(glslang::TIntermOperator* node)
2980 if (! node->isImage() && ! node->isTexture()) {
2981 return spv::NoResult;
2983 auto resultType = [&node,this]{ return convertGlslangToSpvType(node->getType()); };
2985 // Process a GLSL texturing op (will be SPV image)
2986 const glslang::TSampler sampler = node->getAsAggregate() ? node->getAsAggregate()->getSequence()[0]->getAsTyped()->getType().getSampler()
2987 : node->getAsUnaryNode()->getOperand()->getAsTyped()->getType().getSampler();
2988 std::vector<spv::Id> arguments;
2989 if (node->getAsAggregate())
2990 translateArguments(*node->getAsAggregate(), arguments);
2992 translateArguments(*node->getAsUnaryNode(), arguments);
2993 spv::Decoration precision = TranslatePrecisionDecoration(node->getOperationPrecision());
2995 spv::Builder::TextureParameters params = { };
2996 params.sampler = arguments[0];
2998 glslang::TCrackedTextureOp cracked;
2999 node->crackTexture(sampler, cracked);
3001 const bool isUnsignedResult =
3002 node->getType().getBasicType() == glslang::EbtUint64 ||
3003 node->getType().getBasicType() == glslang::EbtUint;
3005 // Check for queries
3006 if (cracked.query) {
3007 // OpImageQueryLod works on a sampled image, for other queries the image has to be extracted first
3008 if (node->getOp() != glslang::EOpTextureQueryLod && builder.isSampledImage(params.sampler))
3009 params.sampler = builder.createUnaryOp(spv::OpImage, builder.getImageType(params.sampler), params.sampler);
3011 switch (node->getOp()) {
3012 case glslang::EOpImageQuerySize:
3013 case glslang::EOpTextureQuerySize:
3014 if (arguments.size() > 1) {
3015 params.lod = arguments[1];
3016 return builder.createTextureQueryCall(spv::OpImageQuerySizeLod, params, isUnsignedResult);
3018 return builder.createTextureQueryCall(spv::OpImageQuerySize, params, isUnsignedResult);
3019 case glslang::EOpImageQuerySamples:
3020 case glslang::EOpTextureQuerySamples:
3021 return builder.createTextureQueryCall(spv::OpImageQuerySamples, params, isUnsignedResult);
3022 case glslang::EOpTextureQueryLod:
3023 params.coords = arguments[1];
3024 return builder.createTextureQueryCall(spv::OpImageQueryLod, params, isUnsignedResult);
3025 case glslang::EOpTextureQueryLevels:
3026 return builder.createTextureQueryCall(spv::OpImageQueryLevels, params, isUnsignedResult);
3027 case glslang::EOpSparseTexelsResident:
3028 return builder.createUnaryOp(spv::OpImageSparseTexelsResident, builder.makeBoolType(), arguments[0]);
3035 // Check for image functions other than queries
3036 if (node->isImage()) {
3037 std::vector<spv::Id> operands;
3038 auto opIt = arguments.begin();
3039 operands.push_back(*(opIt++));
3041 // Handle subpass operations
3042 // TODO: GLSL should change to have the "MS" only on the type rather than the
3043 // built-in function.
3044 if (cracked.subpass) {
3045 // add on the (0,0) coordinate
3046 spv::Id zero = builder.makeIntConstant(0);
3047 std::vector<spv::Id> comps;
3048 comps.push_back(zero);
3049 comps.push_back(zero);
3050 operands.push_back(builder.makeCompositeConstant(builder.makeVectorType(builder.makeIntType(32), 2), comps));
3052 operands.push_back(spv::ImageOperandsSampleMask);
3053 operands.push_back(*(opIt++));
3055 return builder.createOp(spv::OpImageRead, resultType(), operands);
3058 operands.push_back(*(opIt++));
3059 if (node->getOp() == glslang::EOpImageLoad) {
3061 operands.push_back(spv::ImageOperandsSampleMask);
3062 operands.push_back(*opIt);
3064 if (builder.getImageTypeFormat(builder.getImageType(operands.front())) == spv::ImageFormatUnknown)
3065 builder.addCapability(spv::CapabilityStorageImageReadWithoutFormat);
3066 return builder.createOp(spv::OpImageRead, resultType(), operands);
3067 } else if (node->getOp() == glslang::EOpImageStore) {
3069 operands.push_back(*(opIt + 1));
3070 operands.push_back(spv::ImageOperandsSampleMask);
3071 operands.push_back(*opIt);
3073 operands.push_back(*opIt);
3074 builder.createNoResultOp(spv::OpImageWrite, operands);
3075 if (builder.getImageTypeFormat(builder.getImageType(operands.front())) == spv::ImageFormatUnknown)
3076 builder.addCapability(spv::CapabilityStorageImageWriteWithoutFormat);
3077 return spv::NoResult;
3078 } else if (node->getOp() == glslang::EOpSparseImageLoad) {
3079 builder.addCapability(spv::CapabilitySparseResidency);
3080 if (builder.getImageTypeFormat(builder.getImageType(operands.front())) == spv::ImageFormatUnknown)
3081 builder.addCapability(spv::CapabilityStorageImageReadWithoutFormat);
3084 operands.push_back(spv::ImageOperandsSampleMask);
3085 operands.push_back(*opIt++);
3088 // Create the return type that was a special structure
3089 spv::Id texelOut = *opIt;
3090 spv::Id typeId0 = resultType();
3091 spv::Id typeId1 = builder.getDerefTypeId(texelOut);
3092 spv::Id resultTypeId = builder.makeStructResultType(typeId0, typeId1);
3094 spv::Id resultId = builder.createOp(spv::OpImageSparseRead, resultTypeId, operands);
3096 // Decode the return type
3097 builder.createStore(builder.createCompositeExtract(resultId, typeId1, 1), texelOut);
3098 return builder.createCompositeExtract(resultId, typeId0, 0);
3100 // Process image atomic operations
3102 // GLSL "IMAGE_PARAMS" will involve in constructing an image texel pointer and this pointer,
3103 // as the first source operand, is required by SPIR-V atomic operations.
3104 operands.push_back(sampler.ms ? *(opIt++) : builder.makeUintConstant(0)); // For non-MS, the value should be 0
3106 spv::Id resultTypeId = builder.makePointer(spv::StorageClassImage, resultType());
3107 spv::Id pointer = builder.createOp(spv::OpImageTexelPointer, resultTypeId, operands);
3109 std::vector<spv::Id> operands;
3110 operands.push_back(pointer);
3111 for (; opIt != arguments.end(); ++opIt)
3112 operands.push_back(*opIt);
3114 return createAtomicOperation(node->getOp(), precision, resultType(), operands, node->getBasicType());
3118 // Check for texture functions other than queries
3119 bool sparse = node->isSparseTexture();
3120 bool cubeCompare = sampler.dim == glslang::EsdCube && sampler.arrayed && sampler.shadow;
3122 // check for bias argument
3124 if (! cracked.lod && ! cracked.gather && ! cracked.grad && ! cracked.fetch && ! cubeCompare) {
3125 int nonBiasArgCount = 2;
3129 nonBiasArgCount += 2;
3130 if (cracked.lodClamp)
3135 if ((int)arguments.size() > nonBiasArgCount)
3139 // See if the sampler param should really be just the SPV image part
3140 if (cracked.fetch) {
3141 // a fetch needs to have the image extracted first
3142 if (builder.isSampledImage(params.sampler))
3143 params.sampler = builder.createUnaryOp(spv::OpImage, builder.getImageType(params.sampler), params.sampler);
3146 // set the rest of the arguments
3148 params.coords = arguments[1];
3150 bool noImplicitLod = false;
3152 // sort out where Dref is coming from
3154 params.Dref = arguments[2];
3156 } else if (sampler.shadow && cracked.gather) {
3157 params.Dref = arguments[2];
3159 } else if (sampler.shadow) {
3160 std::vector<spv::Id> indexes;
3163 dRefComp = 2; // "The resulting 3rd component of P in the shadow forms is used as Dref"
3165 dRefComp = builder.getNumComponents(params.coords) - 1;
3166 indexes.push_back(dRefComp);
3167 params.Dref = builder.createCompositeExtract(params.coords, builder.getScalarTypeId(builder.getTypeId(params.coords)), indexes);
3172 params.lod = arguments[2];
3174 } else if (glslangIntermediate->getStage() != EShLangFragment) {
3175 // we need to invent the default lod for an explicit lod instruction for a non-fragment stage
3176 noImplicitLod = true;
3181 params.sample = arguments[2]; // For MS, "sample" should be specified
3187 params.gradX = arguments[2 + extraArgs];
3188 params.gradY = arguments[3 + extraArgs];
3192 // offset and offsets
3193 if (cracked.offset) {
3194 params.offset = arguments[2 + extraArgs];
3196 } else if (cracked.offsets) {
3197 params.offsets = arguments[2 + extraArgs];
3202 if (cracked.lodClamp) {
3203 params.lodClamp = arguments[2 + extraArgs];
3209 params.texelOut = arguments[2 + extraArgs];
3215 params.bias = arguments[2 + extraArgs];
3220 if (cracked.gather && ! sampler.shadow) {
3221 // default component is 0, if missing, otherwise an argument
3222 if (2 + extraArgs < (int)arguments.size()) {
3223 params.component = arguments[2 + extraArgs];
3226 params.component = builder.makeIntConstant(0);
3230 // projective component (might not to move)
3231 // GLSL: "The texture coordinates consumed from P, not including the last component of P,
3232 // are divided by the last component of P."
3233 // SPIR-V: "... (u [, v] [, w], q)... It may be a vector larger than needed, but all
3234 // unused components will appear after all used components."
3236 int projSourceComp = builder.getNumComponents(params.coords) - 1;
3238 switch (sampler.dim) {
3239 case glslang::Esd1D: projTargetComp = 1; break;
3240 case glslang::Esd2D: projTargetComp = 2; break;
3241 case glslang::EsdRect: projTargetComp = 2; break;
3242 default: projTargetComp = projSourceComp; break;
3244 // copy the projective coordinate if we have to
3245 if (projTargetComp != projSourceComp) {
3246 spv::Id projComp = builder.createCompositeExtract(params.coords,
3247 builder.getScalarTypeId(builder.getTypeId(params.coords)),
3249 params.coords = builder.createCompositeInsert(projComp, params.coords,
3250 builder.getTypeId(params.coords), projTargetComp);
3254 return builder.createTextureCall(precision, resultType(), sparse, cracked.fetch, cracked.proj, cracked.gather, noImplicitLod, params);
3257 spv::Id TGlslangToSpvTraverser::handleUserFunctionCall(const glslang::TIntermAggregate* node)
3259 // Grab the function's pointer from the previously created function
3260 spv::Function* function = functionMap[node->getName().c_str()];
3264 const glslang::TIntermSequence& glslangArgs = node->getSequence();
3265 const glslang::TQualifierList& qualifiers = node->getQualifierList();
3267 // See comments in makeFunctions() for details about the semantics for parameter passing.
3269 // These imply we need a four step process:
3270 // 1. Evaluate the arguments
3271 // 2. Allocate and make copies of in, out, and inout arguments
3273 // 4. Copy back the results
3275 // 1. Evaluate the arguments
3276 std::vector<spv::Builder::AccessChain> lValues;
3277 std::vector<spv::Id> rValues;
3278 std::vector<const glslang::TType*> argTypes;
3279 for (int a = 0; a < (int)glslangArgs.size(); ++a) {
3280 const glslang::TType& paramType = glslangArgs[a]->getAsTyped()->getType();
3282 builder.clearAccessChain();
3283 glslangArgs[a]->traverse(this);
3284 argTypes.push_back(¶mType);
3285 // keep outputs and opaque objects as l-values, evaluate input-only as r-values
3286 if (qualifiers[a] != glslang::EvqConstReadOnly || paramType.containsOpaque()) {
3288 lValues.push_back(builder.getAccessChain());
3291 rValues.push_back(accessChainLoad(*argTypes.back()));
3295 // 2. Allocate space for anything needing a copy, and if it's "in" or "inout"
3296 // copy the original into that space.
3298 // Also, build up the list of actual arguments to pass in for the call
3299 int lValueCount = 0;
3300 int rValueCount = 0;
3301 std::vector<spv::Id> spvArgs;
3302 for (int a = 0; a < (int)glslangArgs.size(); ++a) {
3303 const glslang::TType& paramType = glslangArgs[a]->getAsTyped()->getType();
3305 if (paramType.containsOpaque() ||
3306 (paramType.getBasicType() == glslang::EbtBlock && qualifiers[a] == glslang::EvqBuffer) ||
3307 (a == 0 && function->hasImplicitThis())) {
3308 builder.setAccessChain(lValues[lValueCount]);
3309 arg = builder.accessChainGetLValue();
3311 } else if (qualifiers[a] != glslang::EvqConstReadOnly) {
3312 // need space to hold the copy
3313 arg = builder.createVariable(spv::StorageClassFunction, convertGlslangToSpvType(paramType), "param");
3314 if (qualifiers[a] == glslang::EvqIn || qualifiers[a] == glslang::EvqInOut) {
3315 // need to copy the input into output space
3316 builder.setAccessChain(lValues[lValueCount]);
3317 spv::Id copy = accessChainLoad(*argTypes[a]);
3318 builder.clearAccessChain();
3319 builder.setAccessChainLValue(arg);
3320 multiTypeStore(paramType, copy);
3324 arg = rValues[rValueCount];
3327 spvArgs.push_back(arg);
3330 // 3. Make the call.
3331 spv::Id result = builder.createFunctionCall(function, spvArgs);
3332 builder.setPrecision(result, TranslatePrecisionDecoration(node->getType()));
3334 // 4. Copy back out an "out" arguments.
3336 for (int a = 0; a < (int)glslangArgs.size(); ++a) {
3337 const glslang::TType& paramType = glslangArgs[a]->getAsTyped()->getType();
3338 if (qualifiers[a] != glslang::EvqConstReadOnly) {
3339 if (qualifiers[a] == glslang::EvqOut || qualifiers[a] == glslang::EvqInOut) {
3340 spv::Id copy = builder.createLoad(spvArgs[a]);
3341 builder.setAccessChain(lValues[lValueCount]);
3342 multiTypeStore(paramType, copy);
3351 // Translate AST operation to SPV operation, already having SPV-based operands/types.
3352 spv::Id TGlslangToSpvTraverser::createBinaryOperation(glslang::TOperator op, spv::Decoration precision,
3353 spv::Decoration noContraction,
3354 spv::Id typeId, spv::Id left, spv::Id right,
3355 glslang::TBasicType typeProxy, bool reduceComparison)
3357 bool isUnsigned = typeProxy == glslang::EbtUint || typeProxy == glslang::EbtUint64;
3358 #ifdef AMD_EXTENSIONS
3359 bool isFloat = typeProxy == glslang::EbtFloat || typeProxy == glslang::EbtDouble || typeProxy == glslang::EbtFloat16;
3361 bool isFloat = typeProxy == glslang::EbtFloat || typeProxy == glslang::EbtDouble;
3363 bool isBool = typeProxy == glslang::EbtBool;
3365 spv::Op binOp = spv::OpNop;
3366 bool needMatchingVectors = true; // for non-matrix ops, would a scalar need to smear to match a vector?
3367 bool comparison = false;
3370 case glslang::EOpAdd:
3371 case glslang::EOpAddAssign:
3373 binOp = spv::OpFAdd;
3375 binOp = spv::OpIAdd;
3377 case glslang::EOpSub:
3378 case glslang::EOpSubAssign:
3380 binOp = spv::OpFSub;
3382 binOp = spv::OpISub;
3384 case glslang::EOpMul:
3385 case glslang::EOpMulAssign:
3387 binOp = spv::OpFMul;
3389 binOp = spv::OpIMul;
3391 case glslang::EOpVectorTimesScalar:
3392 case glslang::EOpVectorTimesScalarAssign:
3393 if (isFloat && (builder.isVector(left) || builder.isVector(right))) {
3394 if (builder.isVector(right))
3395 std::swap(left, right);
3396 assert(builder.isScalar(right));
3397 needMatchingVectors = false;
3398 binOp = spv::OpVectorTimesScalar;
3400 binOp = spv::OpIMul;
3402 case glslang::EOpVectorTimesMatrix:
3403 case glslang::EOpVectorTimesMatrixAssign:
3404 binOp = spv::OpVectorTimesMatrix;
3406 case glslang::EOpMatrixTimesVector:
3407 binOp = spv::OpMatrixTimesVector;
3409 case glslang::EOpMatrixTimesScalar:
3410 case glslang::EOpMatrixTimesScalarAssign:
3411 binOp = spv::OpMatrixTimesScalar;
3413 case glslang::EOpMatrixTimesMatrix:
3414 case glslang::EOpMatrixTimesMatrixAssign:
3415 binOp = spv::OpMatrixTimesMatrix;
3417 case glslang::EOpOuterProduct:
3418 binOp = spv::OpOuterProduct;
3419 needMatchingVectors = false;
3422 case glslang::EOpDiv:
3423 case glslang::EOpDivAssign:
3425 binOp = spv::OpFDiv;
3426 else if (isUnsigned)
3427 binOp = spv::OpUDiv;
3429 binOp = spv::OpSDiv;
3431 case glslang::EOpMod:
3432 case glslang::EOpModAssign:
3434 binOp = spv::OpFMod;
3435 else if (isUnsigned)
3436 binOp = spv::OpUMod;
3438 binOp = spv::OpSMod;
3440 case glslang::EOpRightShift:
3441 case glslang::EOpRightShiftAssign:
3443 binOp = spv::OpShiftRightLogical;
3445 binOp = spv::OpShiftRightArithmetic;
3447 case glslang::EOpLeftShift:
3448 case glslang::EOpLeftShiftAssign:
3449 binOp = spv::OpShiftLeftLogical;
3451 case glslang::EOpAnd:
3452 case glslang::EOpAndAssign:
3453 binOp = spv::OpBitwiseAnd;
3455 case glslang::EOpLogicalAnd:
3456 needMatchingVectors = false;
3457 binOp = spv::OpLogicalAnd;
3459 case glslang::EOpInclusiveOr:
3460 case glslang::EOpInclusiveOrAssign:
3461 binOp = spv::OpBitwiseOr;
3463 case glslang::EOpLogicalOr:
3464 needMatchingVectors = false;
3465 binOp = spv::OpLogicalOr;
3467 case glslang::EOpExclusiveOr:
3468 case glslang::EOpExclusiveOrAssign:
3469 binOp = spv::OpBitwiseXor;
3471 case glslang::EOpLogicalXor:
3472 needMatchingVectors = false;
3473 binOp = spv::OpLogicalNotEqual;
3476 case glslang::EOpLessThan:
3477 case glslang::EOpGreaterThan:
3478 case glslang::EOpLessThanEqual:
3479 case glslang::EOpGreaterThanEqual:
3480 case glslang::EOpEqual:
3481 case glslang::EOpNotEqual:
3482 case glslang::EOpVectorEqual:
3483 case glslang::EOpVectorNotEqual:
3490 // handle mapped binary operations (should be non-comparison)
3491 if (binOp != spv::OpNop) {
3492 assert(comparison == false);
3493 if (builder.isMatrix(left) || builder.isMatrix(right))
3494 return createBinaryMatrixOperation(binOp, precision, noContraction, typeId, left, right);
3496 // No matrix involved; make both operands be the same number of components, if needed
3497 if (needMatchingVectors)
3498 builder.promoteScalar(precision, left, right);
3500 spv::Id result = builder.createBinOp(binOp, typeId, left, right);
3501 addDecoration(result, noContraction);
3502 return builder.setPrecision(result, precision);
3508 // Handle comparison instructions
3510 if (reduceComparison && (op == glslang::EOpEqual || op == glslang::EOpNotEqual)
3511 && (builder.isVector(left) || builder.isMatrix(left) || builder.isAggregate(left)))
3512 return builder.createCompositeCompare(precision, left, right, op == glslang::EOpEqual);
3515 case glslang::EOpLessThan:
3517 binOp = spv::OpFOrdLessThan;
3518 else if (isUnsigned)
3519 binOp = spv::OpULessThan;
3521 binOp = spv::OpSLessThan;
3523 case glslang::EOpGreaterThan:
3525 binOp = spv::OpFOrdGreaterThan;
3526 else if (isUnsigned)
3527 binOp = spv::OpUGreaterThan;
3529 binOp = spv::OpSGreaterThan;
3531 case glslang::EOpLessThanEqual:
3533 binOp = spv::OpFOrdLessThanEqual;
3534 else if (isUnsigned)
3535 binOp = spv::OpULessThanEqual;
3537 binOp = spv::OpSLessThanEqual;
3539 case glslang::EOpGreaterThanEqual:
3541 binOp = spv::OpFOrdGreaterThanEqual;
3542 else if (isUnsigned)
3543 binOp = spv::OpUGreaterThanEqual;
3545 binOp = spv::OpSGreaterThanEqual;
3547 case glslang::EOpEqual:
3548 case glslang::EOpVectorEqual:
3550 binOp = spv::OpFOrdEqual;
3552 binOp = spv::OpLogicalEqual;
3554 binOp = spv::OpIEqual;
3556 case glslang::EOpNotEqual:
3557 case glslang::EOpVectorNotEqual:
3559 binOp = spv::OpFOrdNotEqual;
3561 binOp = spv::OpLogicalNotEqual;
3563 binOp = spv::OpINotEqual;
3569 if (binOp != spv::OpNop) {
3570 spv::Id result = builder.createBinOp(binOp, typeId, left, right);
3571 addDecoration(result, noContraction);
3572 return builder.setPrecision(result, precision);
3579 // Translate AST matrix operation to SPV operation, already having SPV-based operands/types.
3580 // These can be any of:
3584 // matrix * matrix linear algebraic
3587 // matrix * matrix componentwise
3588 // matrix op matrix op in {+, -, /}
3589 // matrix op scalar op in {+, -, /}
3590 // scalar op matrix op in {+, -, /}
3592 spv::Id TGlslangToSpvTraverser::createBinaryMatrixOperation(spv::Op op, spv::Decoration precision, spv::Decoration noContraction, spv::Id typeId, spv::Id left, spv::Id right)
3594 bool firstClass = true;
3596 // First, handle first-class matrix operations (* and matrix/scalar)
3599 if (builder.isMatrix(left) && builder.isScalar(right)) {
3600 // turn matrix / scalar into a multiply...
3601 right = builder.createBinOp(spv::OpFDiv, builder.getTypeId(right), builder.makeFloatConstant(1.0F), right);
3602 op = spv::OpMatrixTimesScalar;
3606 case spv::OpMatrixTimesScalar:
3607 if (builder.isMatrix(right))
3608 std::swap(left, right);
3609 assert(builder.isScalar(right));
3611 case spv::OpVectorTimesMatrix:
3612 assert(builder.isVector(left));
3613 assert(builder.isMatrix(right));
3615 case spv::OpMatrixTimesVector:
3616 assert(builder.isMatrix(left));
3617 assert(builder.isVector(right));
3619 case spv::OpMatrixTimesMatrix:
3620 assert(builder.isMatrix(left));
3621 assert(builder.isMatrix(right));
3629 spv::Id result = builder.createBinOp(op, typeId, left, right);
3630 addDecoration(result, noContraction);
3631 return builder.setPrecision(result, precision);
3634 // Handle component-wise +, -, *, %, and / for all combinations of type.
3635 // The result type of all of them is the same type as the (a) matrix operand.
3636 // The algorithm is to:
3637 // - break the matrix(es) into vectors
3638 // - smear any scalar to a vector
3639 // - do vector operations
3640 // - make a matrix out the vector results
3648 // one time set up...
3649 bool leftMat = builder.isMatrix(left);
3650 bool rightMat = builder.isMatrix(right);
3651 unsigned int numCols = leftMat ? builder.getNumColumns(left) : builder.getNumColumns(right);
3652 int numRows = leftMat ? builder.getNumRows(left) : builder.getNumRows(right);
3653 spv::Id scalarType = builder.getScalarTypeId(typeId);
3654 spv::Id vecType = builder.makeVectorType(scalarType, numRows);
3655 std::vector<spv::Id> results;
3656 spv::Id smearVec = spv::NoResult;
3657 if (builder.isScalar(left))
3658 smearVec = builder.smearScalar(precision, left, vecType);
3659 else if (builder.isScalar(right))
3660 smearVec = builder.smearScalar(precision, right, vecType);
3662 // do each vector op
3663 for (unsigned int c = 0; c < numCols; ++c) {
3664 std::vector<unsigned int> indexes;
3665 indexes.push_back(c);
3666 spv::Id leftVec = leftMat ? builder.createCompositeExtract( left, vecType, indexes) : smearVec;
3667 spv::Id rightVec = rightMat ? builder.createCompositeExtract(right, vecType, indexes) : smearVec;
3668 spv::Id result = builder.createBinOp(op, vecType, leftVec, rightVec);
3669 addDecoration(result, noContraction);
3670 results.push_back(builder.setPrecision(result, precision));
3673 // put the pieces together
3674 return builder.setPrecision(builder.createCompositeConstruct(typeId, results), precision);
3678 return spv::NoResult;
3682 spv::Id TGlslangToSpvTraverser::createUnaryOperation(glslang::TOperator op, spv::Decoration precision, spv::Decoration noContraction, spv::Id typeId, spv::Id operand, glslang::TBasicType typeProxy)
3684 spv::Op unaryOp = spv::OpNop;
3685 int extBuiltins = -1;
3687 bool isUnsigned = typeProxy == glslang::EbtUint || typeProxy == glslang::EbtUint64;
3688 #ifdef AMD_EXTENSIONS
3689 bool isFloat = typeProxy == glslang::EbtFloat || typeProxy == glslang::EbtDouble || typeProxy == glslang::EbtFloat16;
3691 bool isFloat = typeProxy == glslang::EbtFloat || typeProxy == glslang::EbtDouble;
3695 case glslang::EOpNegative:
3697 unaryOp = spv::OpFNegate;
3698 if (builder.isMatrixType(typeId))
3699 return createUnaryMatrixOperation(unaryOp, precision, noContraction, typeId, operand, typeProxy);
3701 unaryOp = spv::OpSNegate;
3704 case glslang::EOpLogicalNot:
3705 case glslang::EOpVectorLogicalNot:
3706 unaryOp = spv::OpLogicalNot;
3708 case glslang::EOpBitwiseNot:
3709 unaryOp = spv::OpNot;
3712 case glslang::EOpDeterminant:
3713 libCall = spv::GLSLstd450Determinant;
3715 case glslang::EOpMatrixInverse:
3716 libCall = spv::GLSLstd450MatrixInverse;
3718 case glslang::EOpTranspose:
3719 unaryOp = spv::OpTranspose;
3722 case glslang::EOpRadians:
3723 libCall = spv::GLSLstd450Radians;
3725 case glslang::EOpDegrees:
3726 libCall = spv::GLSLstd450Degrees;
3728 case glslang::EOpSin:
3729 libCall = spv::GLSLstd450Sin;
3731 case glslang::EOpCos:
3732 libCall = spv::GLSLstd450Cos;
3734 case glslang::EOpTan:
3735 libCall = spv::GLSLstd450Tan;
3737 case glslang::EOpAcos:
3738 libCall = spv::GLSLstd450Acos;
3740 case glslang::EOpAsin:
3741 libCall = spv::GLSLstd450Asin;
3743 case glslang::EOpAtan:
3744 libCall = spv::GLSLstd450Atan;
3747 case glslang::EOpAcosh:
3748 libCall = spv::GLSLstd450Acosh;
3750 case glslang::EOpAsinh:
3751 libCall = spv::GLSLstd450Asinh;
3753 case glslang::EOpAtanh:
3754 libCall = spv::GLSLstd450Atanh;
3756 case glslang::EOpTanh:
3757 libCall = spv::GLSLstd450Tanh;
3759 case glslang::EOpCosh:
3760 libCall = spv::GLSLstd450Cosh;
3762 case glslang::EOpSinh:
3763 libCall = spv::GLSLstd450Sinh;
3766 case glslang::EOpLength:
3767 libCall = spv::GLSLstd450Length;
3769 case glslang::EOpNormalize:
3770 libCall = spv::GLSLstd450Normalize;
3773 case glslang::EOpExp:
3774 libCall = spv::GLSLstd450Exp;
3776 case glslang::EOpLog:
3777 libCall = spv::GLSLstd450Log;
3779 case glslang::EOpExp2:
3780 libCall = spv::GLSLstd450Exp2;
3782 case glslang::EOpLog2:
3783 libCall = spv::GLSLstd450Log2;
3785 case glslang::EOpSqrt:
3786 libCall = spv::GLSLstd450Sqrt;
3788 case glslang::EOpInverseSqrt:
3789 libCall = spv::GLSLstd450InverseSqrt;
3792 case glslang::EOpFloor:
3793 libCall = spv::GLSLstd450Floor;
3795 case glslang::EOpTrunc:
3796 libCall = spv::GLSLstd450Trunc;
3798 case glslang::EOpRound:
3799 libCall = spv::GLSLstd450Round;
3801 case glslang::EOpRoundEven:
3802 libCall = spv::GLSLstd450RoundEven;
3804 case glslang::EOpCeil:
3805 libCall = spv::GLSLstd450Ceil;
3807 case glslang::EOpFract:
3808 libCall = spv::GLSLstd450Fract;
3811 case glslang::EOpIsNan:
3812 unaryOp = spv::OpIsNan;
3814 case glslang::EOpIsInf:
3815 unaryOp = spv::OpIsInf;
3817 case glslang::EOpIsFinite:
3818 unaryOp = spv::OpIsFinite;
3821 case glslang::EOpFloatBitsToInt:
3822 case glslang::EOpFloatBitsToUint:
3823 case glslang::EOpIntBitsToFloat:
3824 case glslang::EOpUintBitsToFloat:
3825 case glslang::EOpDoubleBitsToInt64:
3826 case glslang::EOpDoubleBitsToUint64:
3827 case glslang::EOpInt64BitsToDouble:
3828 case glslang::EOpUint64BitsToDouble:
3829 unaryOp = spv::OpBitcast;
3832 case glslang::EOpPackSnorm2x16:
3833 libCall = spv::GLSLstd450PackSnorm2x16;
3835 case glslang::EOpUnpackSnorm2x16:
3836 libCall = spv::GLSLstd450UnpackSnorm2x16;
3838 case glslang::EOpPackUnorm2x16:
3839 libCall = spv::GLSLstd450PackUnorm2x16;
3841 case glslang::EOpUnpackUnorm2x16:
3842 libCall = spv::GLSLstd450UnpackUnorm2x16;
3844 case glslang::EOpPackHalf2x16:
3845 libCall = spv::GLSLstd450PackHalf2x16;
3847 case glslang::EOpUnpackHalf2x16:
3848 libCall = spv::GLSLstd450UnpackHalf2x16;
3850 case glslang::EOpPackSnorm4x8:
3851 libCall = spv::GLSLstd450PackSnorm4x8;
3853 case glslang::EOpUnpackSnorm4x8:
3854 libCall = spv::GLSLstd450UnpackSnorm4x8;
3856 case glslang::EOpPackUnorm4x8:
3857 libCall = spv::GLSLstd450PackUnorm4x8;
3859 case glslang::EOpUnpackUnorm4x8:
3860 libCall = spv::GLSLstd450UnpackUnorm4x8;
3862 case glslang::EOpPackDouble2x32:
3863 libCall = spv::GLSLstd450PackDouble2x32;
3865 case glslang::EOpUnpackDouble2x32:
3866 libCall = spv::GLSLstd450UnpackDouble2x32;
3869 case glslang::EOpPackInt2x32:
3870 case glslang::EOpUnpackInt2x32:
3871 case glslang::EOpPackUint2x32:
3872 case glslang::EOpUnpackUint2x32:
3873 unaryOp = spv::OpBitcast;
3876 #ifdef AMD_EXTENSIONS
3877 case glslang::EOpPackFloat2x16:
3878 case glslang::EOpUnpackFloat2x16:
3879 unaryOp = spv::OpBitcast;
3883 case glslang::EOpDPdx:
3884 unaryOp = spv::OpDPdx;
3886 case glslang::EOpDPdy:
3887 unaryOp = spv::OpDPdy;
3889 case glslang::EOpFwidth:
3890 unaryOp = spv::OpFwidth;
3892 case glslang::EOpDPdxFine:
3893 builder.addCapability(spv::CapabilityDerivativeControl);
3894 unaryOp = spv::OpDPdxFine;
3896 case glslang::EOpDPdyFine:
3897 builder.addCapability(spv::CapabilityDerivativeControl);
3898 unaryOp = spv::OpDPdyFine;
3900 case glslang::EOpFwidthFine:
3901 builder.addCapability(spv::CapabilityDerivativeControl);
3902 unaryOp = spv::OpFwidthFine;
3904 case glslang::EOpDPdxCoarse:
3905 builder.addCapability(spv::CapabilityDerivativeControl);
3906 unaryOp = spv::OpDPdxCoarse;
3908 case glslang::EOpDPdyCoarse:
3909 builder.addCapability(spv::CapabilityDerivativeControl);
3910 unaryOp = spv::OpDPdyCoarse;
3912 case glslang::EOpFwidthCoarse:
3913 builder.addCapability(spv::CapabilityDerivativeControl);
3914 unaryOp = spv::OpFwidthCoarse;
3916 case glslang::EOpInterpolateAtCentroid:
3917 builder.addCapability(spv::CapabilityInterpolationFunction);
3918 libCall = spv::GLSLstd450InterpolateAtCentroid;
3920 case glslang::EOpAny:
3921 unaryOp = spv::OpAny;
3923 case glslang::EOpAll:
3924 unaryOp = spv::OpAll;
3927 case glslang::EOpAbs:
3929 libCall = spv::GLSLstd450FAbs;
3931 libCall = spv::GLSLstd450SAbs;
3933 case glslang::EOpSign:
3935 libCall = spv::GLSLstd450FSign;
3937 libCall = spv::GLSLstd450SSign;
3940 case glslang::EOpAtomicCounterIncrement:
3941 case glslang::EOpAtomicCounterDecrement:
3942 case glslang::EOpAtomicCounter:
3944 // Handle all of the atomics in one place, in createAtomicOperation()
3945 std::vector<spv::Id> operands;
3946 operands.push_back(operand);
3947 return createAtomicOperation(op, precision, typeId, operands, typeProxy);
3950 case glslang::EOpBitFieldReverse:
3951 unaryOp = spv::OpBitReverse;
3953 case glslang::EOpBitCount:
3954 unaryOp = spv::OpBitCount;
3956 case glslang::EOpFindLSB:
3957 libCall = spv::GLSLstd450FindILsb;
3959 case glslang::EOpFindMSB:
3961 libCall = spv::GLSLstd450FindUMsb;
3963 libCall = spv::GLSLstd450FindSMsb;
3966 case glslang::EOpBallot:
3967 case glslang::EOpReadFirstInvocation:
3968 case glslang::EOpAnyInvocation:
3969 case glslang::EOpAllInvocations:
3970 case glslang::EOpAllInvocationsEqual:
3971 #ifdef AMD_EXTENSIONS
3972 case glslang::EOpMinInvocations:
3973 case glslang::EOpMaxInvocations:
3974 case glslang::EOpAddInvocations:
3975 case glslang::EOpMinInvocationsNonUniform:
3976 case glslang::EOpMaxInvocationsNonUniform:
3977 case glslang::EOpAddInvocationsNonUniform:
3978 case glslang::EOpMinInvocationsInclusiveScan:
3979 case glslang::EOpMaxInvocationsInclusiveScan:
3980 case glslang::EOpAddInvocationsInclusiveScan:
3981 case glslang::EOpMinInvocationsInclusiveScanNonUniform:
3982 case glslang::EOpMaxInvocationsInclusiveScanNonUniform:
3983 case glslang::EOpAddInvocationsInclusiveScanNonUniform:
3984 case glslang::EOpMinInvocationsExclusiveScan:
3985 case glslang::EOpMaxInvocationsExclusiveScan:
3986 case glslang::EOpAddInvocationsExclusiveScan:
3987 case glslang::EOpMinInvocationsExclusiveScanNonUniform:
3988 case glslang::EOpMaxInvocationsExclusiveScanNonUniform:
3989 case glslang::EOpAddInvocationsExclusiveScanNonUniform:
3992 std::vector<spv::Id> operands;
3993 operands.push_back(operand);
3994 return createInvocationsOperation(op, typeId, operands, typeProxy);
3997 #ifdef AMD_EXTENSIONS
3998 case glslang::EOpMbcnt:
3999 extBuiltins = getExtBuiltins(spv::E_SPV_AMD_shader_ballot);
4000 libCall = spv::MbcntAMD;
4003 case glslang::EOpCubeFaceIndex:
4004 extBuiltins = getExtBuiltins(spv::E_SPV_AMD_gcn_shader);
4005 libCall = spv::CubeFaceIndexAMD;
4008 case glslang::EOpCubeFaceCoord:
4009 extBuiltins = getExtBuiltins(spv::E_SPV_AMD_gcn_shader);
4010 libCall = spv::CubeFaceCoordAMD;
4020 std::vector<spv::Id> args;
4021 args.push_back(operand);
4022 id = builder.createBuiltinCall(typeId, extBuiltins >= 0 ? extBuiltins : stdBuiltins, libCall, args);
4024 id = builder.createUnaryOp(unaryOp, typeId, operand);
4027 addDecoration(id, noContraction);
4028 return builder.setPrecision(id, precision);
4031 // Create a unary operation on a matrix
4032 spv::Id TGlslangToSpvTraverser::createUnaryMatrixOperation(spv::Op op, spv::Decoration precision, spv::Decoration noContraction, spv::Id typeId, spv::Id operand, glslang::TBasicType /* typeProxy */)
4034 // Handle unary operations vector by vector.
4035 // The result type is the same type as the original type.
4036 // The algorithm is to:
4037 // - break the matrix into vectors
4038 // - apply the operation to each vector
4039 // - make a matrix out the vector results
4041 // get the types sorted out
4042 int numCols = builder.getNumColumns(operand);
4043 int numRows = builder.getNumRows(operand);
4044 spv::Id srcVecType = builder.makeVectorType(builder.getScalarTypeId(builder.getTypeId(operand)), numRows);
4045 spv::Id destVecType = builder.makeVectorType(builder.getScalarTypeId(typeId), numRows);
4046 std::vector<spv::Id> results;
4048 // do each vector op
4049 for (int c = 0; c < numCols; ++c) {
4050 std::vector<unsigned int> indexes;
4051 indexes.push_back(c);
4052 spv::Id srcVec = builder.createCompositeExtract(operand, srcVecType, indexes);
4053 spv::Id destVec = builder.createUnaryOp(op, destVecType, srcVec);
4054 addDecoration(destVec, noContraction);
4055 results.push_back(builder.setPrecision(destVec, precision));
4058 // put the pieces together
4059 return builder.setPrecision(builder.createCompositeConstruct(typeId, results), precision);
4062 spv::Id TGlslangToSpvTraverser::createConversion(glslang::TOperator op, spv::Decoration precision, spv::Decoration noContraction, spv::Id destType, spv::Id operand, glslang::TBasicType typeProxy)
4064 spv::Op convOp = spv::OpNop;
4069 int vectorSize = builder.isVectorType(destType) ? builder.getNumTypeComponents(destType) : 0;
4072 case glslang::EOpConvIntToBool:
4073 case glslang::EOpConvUintToBool:
4074 case glslang::EOpConvInt64ToBool:
4075 case glslang::EOpConvUint64ToBool:
4076 zero = (op == glslang::EOpConvInt64ToBool ||
4077 op == glslang::EOpConvUint64ToBool) ? builder.makeUint64Constant(0) : builder.makeUintConstant(0);
4078 zero = makeSmearedConstant(zero, vectorSize);
4079 return builder.createBinOp(spv::OpINotEqual, destType, operand, zero);
4081 case glslang::EOpConvFloatToBool:
4082 zero = builder.makeFloatConstant(0.0F);
4083 zero = makeSmearedConstant(zero, vectorSize);
4084 return builder.createBinOp(spv::OpFOrdNotEqual, destType, operand, zero);
4086 case glslang::EOpConvDoubleToBool:
4087 zero = builder.makeDoubleConstant(0.0);
4088 zero = makeSmearedConstant(zero, vectorSize);
4089 return builder.createBinOp(spv::OpFOrdNotEqual, destType, operand, zero);
4091 #ifdef AMD_EXTENSIONS
4092 case glslang::EOpConvFloat16ToBool:
4093 zero = builder.makeFloat16Constant(0.0F);
4094 zero = makeSmearedConstant(zero, vectorSize);
4095 return builder.createBinOp(spv::OpFOrdNotEqual, destType, operand, zero);
4098 case glslang::EOpConvBoolToFloat:
4099 convOp = spv::OpSelect;
4100 zero = builder.makeFloatConstant(0.0F);
4101 one = builder.makeFloatConstant(1.0F);
4104 case glslang::EOpConvBoolToDouble:
4105 convOp = spv::OpSelect;
4106 zero = builder.makeDoubleConstant(0.0);
4107 one = builder.makeDoubleConstant(1.0);
4110 #ifdef AMD_EXTENSIONS
4111 case glslang::EOpConvBoolToFloat16:
4112 convOp = spv::OpSelect;
4113 zero = builder.makeFloat16Constant(0.0F);
4114 one = builder.makeFloat16Constant(1.0F);
4118 case glslang::EOpConvBoolToInt:
4119 case glslang::EOpConvBoolToInt64:
4120 zero = (op == glslang::EOpConvBoolToInt64) ? builder.makeInt64Constant(0) : builder.makeIntConstant(0);
4121 one = (op == glslang::EOpConvBoolToInt64) ? builder.makeInt64Constant(1) : builder.makeIntConstant(1);
4122 convOp = spv::OpSelect;
4125 case glslang::EOpConvBoolToUint:
4126 case glslang::EOpConvBoolToUint64:
4127 zero = (op == glslang::EOpConvBoolToUint64) ? builder.makeUint64Constant(0) : builder.makeUintConstant(0);
4128 one = (op == glslang::EOpConvBoolToUint64) ? builder.makeUint64Constant(1) : builder.makeUintConstant(1);
4129 convOp = spv::OpSelect;
4132 case glslang::EOpConvIntToFloat:
4133 case glslang::EOpConvIntToDouble:
4134 case glslang::EOpConvInt64ToFloat:
4135 case glslang::EOpConvInt64ToDouble:
4136 #ifdef AMD_EXTENSIONS
4137 case glslang::EOpConvIntToFloat16:
4138 case glslang::EOpConvInt64ToFloat16:
4140 convOp = spv::OpConvertSToF;
4143 case glslang::EOpConvUintToFloat:
4144 case glslang::EOpConvUintToDouble:
4145 case glslang::EOpConvUint64ToFloat:
4146 case glslang::EOpConvUint64ToDouble:
4147 #ifdef AMD_EXTENSIONS
4148 case glslang::EOpConvUintToFloat16:
4149 case glslang::EOpConvUint64ToFloat16:
4151 convOp = spv::OpConvertUToF;
4154 case glslang::EOpConvDoubleToFloat:
4155 case glslang::EOpConvFloatToDouble:
4156 #ifdef AMD_EXTENSIONS
4157 case glslang::EOpConvDoubleToFloat16:
4158 case glslang::EOpConvFloat16ToDouble:
4159 case glslang::EOpConvFloatToFloat16:
4160 case glslang::EOpConvFloat16ToFloat:
4162 convOp = spv::OpFConvert;
4163 if (builder.isMatrixType(destType))
4164 return createUnaryMatrixOperation(convOp, precision, noContraction, destType, operand, typeProxy);
4167 case glslang::EOpConvFloatToInt:
4168 case glslang::EOpConvDoubleToInt:
4169 case glslang::EOpConvFloatToInt64:
4170 case glslang::EOpConvDoubleToInt64:
4171 #ifdef AMD_EXTENSIONS
4172 case glslang::EOpConvFloat16ToInt:
4173 case glslang::EOpConvFloat16ToInt64:
4175 convOp = spv::OpConvertFToS;
4178 case glslang::EOpConvUintToInt:
4179 case glslang::EOpConvIntToUint:
4180 case glslang::EOpConvUint64ToInt64:
4181 case glslang::EOpConvInt64ToUint64:
4182 if (builder.isInSpecConstCodeGenMode()) {
4183 // Build zero scalar or vector for OpIAdd.
4184 zero = (op == glslang::EOpConvUint64ToInt64 ||
4185 op == glslang::EOpConvInt64ToUint64) ? builder.makeUint64Constant(0) : builder.makeUintConstant(0);
4186 zero = makeSmearedConstant(zero, vectorSize);
4187 // Use OpIAdd, instead of OpBitcast to do the conversion when
4188 // generating for OpSpecConstantOp instruction.
4189 return builder.createBinOp(spv::OpIAdd, destType, operand, zero);
4191 // For normal run-time conversion instruction, use OpBitcast.
4192 convOp = spv::OpBitcast;
4195 case glslang::EOpConvFloatToUint:
4196 case glslang::EOpConvDoubleToUint:
4197 case glslang::EOpConvFloatToUint64:
4198 case glslang::EOpConvDoubleToUint64:
4199 #ifdef AMD_EXTENSIONS
4200 case glslang::EOpConvFloat16ToUint:
4201 case glslang::EOpConvFloat16ToUint64:
4203 convOp = spv::OpConvertFToU;
4206 case glslang::EOpConvIntToInt64:
4207 case glslang::EOpConvInt64ToInt:
4208 convOp = spv::OpSConvert;
4211 case glslang::EOpConvUintToUint64:
4212 case glslang::EOpConvUint64ToUint:
4213 convOp = spv::OpUConvert;
4216 case glslang::EOpConvIntToUint64:
4217 case glslang::EOpConvInt64ToUint:
4218 case glslang::EOpConvUint64ToInt:
4219 case glslang::EOpConvUintToInt64:
4220 // OpSConvert/OpUConvert + OpBitCast
4222 case glslang::EOpConvIntToUint64:
4223 convOp = spv::OpSConvert;
4224 type = builder.makeIntType(64);
4226 case glslang::EOpConvInt64ToUint:
4227 convOp = spv::OpSConvert;
4228 type = builder.makeIntType(32);
4230 case glslang::EOpConvUint64ToInt:
4231 convOp = spv::OpUConvert;
4232 type = builder.makeUintType(32);
4234 case glslang::EOpConvUintToInt64:
4235 convOp = spv::OpUConvert;
4236 type = builder.makeUintType(64);
4244 type = builder.makeVectorType(type, vectorSize);
4246 operand = builder.createUnaryOp(convOp, type, operand);
4248 if (builder.isInSpecConstCodeGenMode()) {
4249 // Build zero scalar or vector for OpIAdd.
4250 zero = (op == glslang::EOpConvIntToUint64 ||
4251 op == glslang::EOpConvUintToInt64) ? builder.makeUint64Constant(0) : builder.makeUintConstant(0);
4252 zero = makeSmearedConstant(zero, vectorSize);
4253 // Use OpIAdd, instead of OpBitcast to do the conversion when
4254 // generating for OpSpecConstantOp instruction.
4255 return builder.createBinOp(spv::OpIAdd, destType, operand, zero);
4257 // For normal run-time conversion instruction, use OpBitcast.
4258 convOp = spv::OpBitcast;
4265 if (convOp == spv::OpNop)
4268 if (convOp == spv::OpSelect) {
4269 zero = makeSmearedConstant(zero, vectorSize);
4270 one = makeSmearedConstant(one, vectorSize);
4271 result = builder.createTriOp(convOp, destType, operand, one, zero);
4273 result = builder.createUnaryOp(convOp, destType, operand);
4275 return builder.setPrecision(result, precision);
4278 spv::Id TGlslangToSpvTraverser::makeSmearedConstant(spv::Id constant, int vectorSize)
4280 if (vectorSize == 0)
4283 spv::Id vectorTypeId = builder.makeVectorType(builder.getTypeId(constant), vectorSize);
4284 std::vector<spv::Id> components;
4285 for (int c = 0; c < vectorSize; ++c)
4286 components.push_back(constant);
4287 return builder.makeCompositeConstant(vectorTypeId, components);
4290 // For glslang ops that map to SPV atomic opCodes
4291 spv::Id TGlslangToSpvTraverser::createAtomicOperation(glslang::TOperator op, spv::Decoration /*precision*/, spv::Id typeId, std::vector<spv::Id>& operands, glslang::TBasicType typeProxy)
4293 spv::Op opCode = spv::OpNop;
4296 case glslang::EOpAtomicAdd:
4297 case glslang::EOpImageAtomicAdd:
4298 opCode = spv::OpAtomicIAdd;
4300 case glslang::EOpAtomicMin:
4301 case glslang::EOpImageAtomicMin:
4302 opCode = typeProxy == glslang::EbtUint ? spv::OpAtomicUMin : spv::OpAtomicSMin;
4304 case glslang::EOpAtomicMax:
4305 case glslang::EOpImageAtomicMax:
4306 opCode = typeProxy == glslang::EbtUint ? spv::OpAtomicUMax : spv::OpAtomicSMax;
4308 case glslang::EOpAtomicAnd:
4309 case glslang::EOpImageAtomicAnd:
4310 opCode = spv::OpAtomicAnd;
4312 case glslang::EOpAtomicOr:
4313 case glslang::EOpImageAtomicOr:
4314 opCode = spv::OpAtomicOr;
4316 case glslang::EOpAtomicXor:
4317 case glslang::EOpImageAtomicXor:
4318 opCode = spv::OpAtomicXor;
4320 case glslang::EOpAtomicExchange:
4321 case glslang::EOpImageAtomicExchange:
4322 opCode = spv::OpAtomicExchange;
4324 case glslang::EOpAtomicCompSwap:
4325 case glslang::EOpImageAtomicCompSwap:
4326 opCode = spv::OpAtomicCompareExchange;
4328 case glslang::EOpAtomicCounterIncrement:
4329 opCode = spv::OpAtomicIIncrement;
4331 case glslang::EOpAtomicCounterDecrement:
4332 opCode = spv::OpAtomicIDecrement;
4334 case glslang::EOpAtomicCounter:
4335 opCode = spv::OpAtomicLoad;
4342 // Sort out the operands
4343 // - mapping from glslang -> SPV
4344 // - there are extra SPV operands with no glslang source
4345 // - compare-exchange swaps the value and comparator
4346 // - compare-exchange has an extra memory semantics
4347 std::vector<spv::Id> spvAtomicOperands; // hold the spv operands
4348 auto opIt = operands.begin(); // walk the glslang operands
4349 spvAtomicOperands.push_back(*(opIt++));
4350 spvAtomicOperands.push_back(builder.makeUintConstant(spv::ScopeDevice)); // TBD: what is the correct scope?
4351 spvAtomicOperands.push_back(builder.makeUintConstant(spv::MemorySemanticsMaskNone)); // TBD: what are the correct memory semantics?
4352 if (opCode == spv::OpAtomicCompareExchange) {
4353 // There are 2 memory semantics for compare-exchange. And the operand order of "comparator" and "new value" in GLSL
4354 // differs from that in SPIR-V. Hence, special processing is required.
4355 spvAtomicOperands.push_back(builder.makeUintConstant(spv::MemorySemanticsMaskNone));
4356 spvAtomicOperands.push_back(*(opIt + 1));
4357 spvAtomicOperands.push_back(*opIt);
4361 // Add the rest of the operands, skipping any that were dealt with above.
4362 for (; opIt != operands.end(); ++opIt)
4363 spvAtomicOperands.push_back(*opIt);
4365 return builder.createOp(opCode, typeId, spvAtomicOperands);
4368 // Create group invocation operations.
4369 spv::Id TGlslangToSpvTraverser::createInvocationsOperation(glslang::TOperator op, spv::Id typeId, std::vector<spv::Id>& operands, glslang::TBasicType typeProxy)
4371 #ifdef AMD_EXTENSIONS
4372 bool isUnsigned = typeProxy == glslang::EbtUint || typeProxy == glslang::EbtUint64;
4373 bool isFloat = typeProxy == glslang::EbtFloat || typeProxy == glslang::EbtDouble || typeProxy == glslang::EbtFloat16;
4376 spv::Op opCode = spv::OpNop;
4377 std::vector<spv::Id> spvGroupOperands;
4378 spv::GroupOperation groupOperation = spv::GroupOperationMax;
4380 if (op == glslang::EOpBallot || op == glslang::EOpReadFirstInvocation ||
4381 op == glslang::EOpReadInvocation) {
4382 builder.addExtension(spv::E_SPV_KHR_shader_ballot);
4383 builder.addCapability(spv::CapabilitySubgroupBallotKHR);
4384 } else if (op == glslang::EOpAnyInvocation ||
4385 op == glslang::EOpAllInvocations ||
4386 op == glslang::EOpAllInvocationsEqual) {
4387 builder.addExtension(spv::E_SPV_KHR_subgroup_vote);
4388 builder.addCapability(spv::CapabilitySubgroupVoteKHR);
4390 builder.addCapability(spv::CapabilityGroups);
4391 #ifdef AMD_EXTENSIONS
4392 if (op == glslang::EOpMinInvocationsNonUniform ||
4393 op == glslang::EOpMaxInvocationsNonUniform ||
4394 op == glslang::EOpAddInvocationsNonUniform ||
4395 op == glslang::EOpMinInvocationsInclusiveScanNonUniform ||
4396 op == glslang::EOpMaxInvocationsInclusiveScanNonUniform ||
4397 op == glslang::EOpAddInvocationsInclusiveScanNonUniform ||
4398 op == glslang::EOpMinInvocationsExclusiveScanNonUniform ||
4399 op == glslang::EOpMaxInvocationsExclusiveScanNonUniform ||
4400 op == glslang::EOpAddInvocationsExclusiveScanNonUniform)
4401 builder.addExtension(spv::E_SPV_AMD_shader_ballot);
4404 spvGroupOperands.push_back(builder.makeUintConstant(spv::ScopeSubgroup));
4405 #ifdef AMD_EXTENSIONS
4407 case glslang::EOpMinInvocations:
4408 case glslang::EOpMaxInvocations:
4409 case glslang::EOpAddInvocations:
4410 case glslang::EOpMinInvocationsNonUniform:
4411 case glslang::EOpMaxInvocationsNonUniform:
4412 case glslang::EOpAddInvocationsNonUniform:
4413 groupOperation = spv::GroupOperationReduce;
4414 spvGroupOperands.push_back(groupOperation);
4416 case glslang::EOpMinInvocationsInclusiveScan:
4417 case glslang::EOpMaxInvocationsInclusiveScan:
4418 case glslang::EOpAddInvocationsInclusiveScan:
4419 case glslang::EOpMinInvocationsInclusiveScanNonUniform:
4420 case glslang::EOpMaxInvocationsInclusiveScanNonUniform:
4421 case glslang::EOpAddInvocationsInclusiveScanNonUniform:
4422 groupOperation = spv::GroupOperationInclusiveScan;
4423 spvGroupOperands.push_back(groupOperation);
4425 case glslang::EOpMinInvocationsExclusiveScan:
4426 case glslang::EOpMaxInvocationsExclusiveScan:
4427 case glslang::EOpAddInvocationsExclusiveScan:
4428 case glslang::EOpMinInvocationsExclusiveScanNonUniform:
4429 case glslang::EOpMaxInvocationsExclusiveScanNonUniform:
4430 case glslang::EOpAddInvocationsExclusiveScanNonUniform:
4431 groupOperation = spv::GroupOperationExclusiveScan;
4432 spvGroupOperands.push_back(groupOperation);
4440 for (auto opIt = operands.begin(); opIt != operands.end(); ++opIt)
4441 spvGroupOperands.push_back(*opIt);
4444 case glslang::EOpAnyInvocation:
4445 opCode = spv::OpSubgroupAnyKHR;
4447 case glslang::EOpAllInvocations:
4448 opCode = spv::OpSubgroupAllKHR;
4450 case glslang::EOpAllInvocationsEqual:
4451 opCode = spv::OpSubgroupAllEqualKHR;
4453 case glslang::EOpReadInvocation:
4454 opCode = spv::OpSubgroupReadInvocationKHR;
4455 if (builder.isVectorType(typeId))
4456 return CreateInvocationsVectorOperation(opCode, groupOperation, typeId, operands);
4458 case glslang::EOpReadFirstInvocation:
4459 opCode = spv::OpSubgroupFirstInvocationKHR;
4461 case glslang::EOpBallot:
4463 // NOTE: According to the spec, the result type of "OpSubgroupBallotKHR" must be a 4 component vector of 32
4464 // bit integer types. The GLSL built-in function "ballotARB()" assumes the maximum number of invocations in
4465 // a subgroup is 64. Thus, we have to convert uvec4.xy to uint64_t as follow:
4467 // result = Bitcast(SubgroupBallotKHR(Predicate).xy)
4469 spv::Id uintType = builder.makeUintType(32);
4470 spv::Id uvec4Type = builder.makeVectorType(uintType, 4);
4471 spv::Id result = builder.createOp(spv::OpSubgroupBallotKHR, uvec4Type, spvGroupOperands);
4473 std::vector<spv::Id> components;
4474 components.push_back(builder.createCompositeExtract(result, uintType, 0));
4475 components.push_back(builder.createCompositeExtract(result, uintType, 1));
4477 spv::Id uvec2Type = builder.makeVectorType(uintType, 2);
4478 return builder.createUnaryOp(spv::OpBitcast, typeId,
4479 builder.createCompositeConstruct(uvec2Type, components));
4482 #ifdef AMD_EXTENSIONS
4483 case glslang::EOpMinInvocations:
4484 case glslang::EOpMaxInvocations:
4485 case glslang::EOpAddInvocations:
4486 case glslang::EOpMinInvocationsInclusiveScan:
4487 case glslang::EOpMaxInvocationsInclusiveScan:
4488 case glslang::EOpAddInvocationsInclusiveScan:
4489 case glslang::EOpMinInvocationsExclusiveScan:
4490 case glslang::EOpMaxInvocationsExclusiveScan:
4491 case glslang::EOpAddInvocationsExclusiveScan:
4492 if (op == glslang::EOpMinInvocations ||
4493 op == glslang::EOpMinInvocationsInclusiveScan ||
4494 op == glslang::EOpMinInvocationsExclusiveScan) {
4496 opCode = spv::OpGroupFMin;
4499 opCode = spv::OpGroupUMin;
4501 opCode = spv::OpGroupSMin;
4503 } else if (op == glslang::EOpMaxInvocations ||
4504 op == glslang::EOpMaxInvocationsInclusiveScan ||
4505 op == glslang::EOpMaxInvocationsExclusiveScan) {
4507 opCode = spv::OpGroupFMax;
4510 opCode = spv::OpGroupUMax;
4512 opCode = spv::OpGroupSMax;
4516 opCode = spv::OpGroupFAdd;
4518 opCode = spv::OpGroupIAdd;
4521 if (builder.isVectorType(typeId))
4522 return CreateInvocationsVectorOperation(opCode, groupOperation, typeId, operands);
4525 case glslang::EOpMinInvocationsNonUniform:
4526 case glslang::EOpMaxInvocationsNonUniform:
4527 case glslang::EOpAddInvocationsNonUniform:
4528 case glslang::EOpMinInvocationsInclusiveScanNonUniform:
4529 case glslang::EOpMaxInvocationsInclusiveScanNonUniform:
4530 case glslang::EOpAddInvocationsInclusiveScanNonUniform:
4531 case glslang::EOpMinInvocationsExclusiveScanNonUniform:
4532 case glslang::EOpMaxInvocationsExclusiveScanNonUniform:
4533 case glslang::EOpAddInvocationsExclusiveScanNonUniform:
4534 if (op == glslang::EOpMinInvocationsNonUniform ||
4535 op == glslang::EOpMinInvocationsInclusiveScanNonUniform ||
4536 op == glslang::EOpMinInvocationsExclusiveScanNonUniform) {
4538 opCode = spv::OpGroupFMinNonUniformAMD;
4541 opCode = spv::OpGroupUMinNonUniformAMD;
4543 opCode = spv::OpGroupSMinNonUniformAMD;
4546 else if (op == glslang::EOpMaxInvocationsNonUniform ||
4547 op == glslang::EOpMaxInvocationsInclusiveScanNonUniform ||
4548 op == glslang::EOpMaxInvocationsExclusiveScanNonUniform) {
4550 opCode = spv::OpGroupFMaxNonUniformAMD;
4553 opCode = spv::OpGroupUMaxNonUniformAMD;
4555 opCode = spv::OpGroupSMaxNonUniformAMD;
4560 opCode = spv::OpGroupFAddNonUniformAMD;
4562 opCode = spv::OpGroupIAddNonUniformAMD;
4565 if (builder.isVectorType(typeId))
4566 return CreateInvocationsVectorOperation(opCode, groupOperation, typeId, operands);
4571 logger->missingFunctionality("invocation operation");
4572 return spv::NoResult;
4575 assert(opCode != spv::OpNop);
4576 return builder.createOp(opCode, typeId, spvGroupOperands);
4579 // Create group invocation operations on a vector
4580 spv::Id TGlslangToSpvTraverser::CreateInvocationsVectorOperation(spv::Op op, spv::GroupOperation groupOperation, spv::Id typeId, std::vector<spv::Id>& operands)
4582 #ifdef AMD_EXTENSIONS
4583 assert(op == spv::OpGroupFMin || op == spv::OpGroupUMin || op == spv::OpGroupSMin ||
4584 op == spv::OpGroupFMax || op == spv::OpGroupUMax || op == spv::OpGroupSMax ||
4585 op == spv::OpGroupFAdd || op == spv::OpGroupIAdd || op == spv::OpGroupBroadcast ||
4586 op == spv::OpSubgroupReadInvocationKHR ||
4587 op == spv::OpGroupFMinNonUniformAMD || op == spv::OpGroupUMinNonUniformAMD || op == spv::OpGroupSMinNonUniformAMD ||
4588 op == spv::OpGroupFMaxNonUniformAMD || op == spv::OpGroupUMaxNonUniformAMD || op == spv::OpGroupSMaxNonUniformAMD ||
4589 op == spv::OpGroupFAddNonUniformAMD || op == spv::OpGroupIAddNonUniformAMD);
4591 assert(op == spv::OpGroupFMin || op == spv::OpGroupUMin || op == spv::OpGroupSMin ||
4592 op == spv::OpGroupFMax || op == spv::OpGroupUMax || op == spv::OpGroupSMax ||
4593 op == spv::OpGroupFAdd || op == spv::OpGroupIAdd || op == spv::OpGroupBroadcast ||
4594 op == spv::OpSubgroupReadInvocationKHR);
4597 // Handle group invocation operations scalar by scalar.
4598 // The result type is the same type as the original type.
4599 // The algorithm is to:
4600 // - break the vector into scalars
4601 // - apply the operation to each scalar
4602 // - make a vector out the scalar results
4604 // get the types sorted out
4605 int numComponents = builder.getNumComponents(operands[0]);
4606 spv::Id scalarType = builder.getScalarTypeId(builder.getTypeId(operands[0]));
4607 std::vector<spv::Id> results;
4609 // do each scalar op
4610 for (int comp = 0; comp < numComponents; ++comp) {
4611 std::vector<unsigned int> indexes;
4612 indexes.push_back(comp);
4613 spv::Id scalar = builder.createCompositeExtract(operands[0], scalarType, indexes);
4614 std::vector<spv::Id> spvGroupOperands;
4615 if (op == spv::OpSubgroupReadInvocationKHR) {
4616 spvGroupOperands.push_back(scalar);
4617 spvGroupOperands.push_back(operands[1]);
4618 } else if (op == spv::OpGroupBroadcast) {
4619 spvGroupOperands.push_back(builder.makeUintConstant(spv::ScopeSubgroup));
4620 spvGroupOperands.push_back(scalar);
4621 spvGroupOperands.push_back(operands[1]);
4623 spvGroupOperands.push_back(builder.makeUintConstant(spv::ScopeSubgroup));
4624 spvGroupOperands.push_back(groupOperation);
4625 spvGroupOperands.push_back(scalar);
4628 results.push_back(builder.createOp(op, scalarType, spvGroupOperands));
4631 // put the pieces together
4632 return builder.createCompositeConstruct(typeId, results);
4635 spv::Id TGlslangToSpvTraverser::createMiscOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId, std::vector<spv::Id>& operands, glslang::TBasicType typeProxy)
4637 bool isUnsigned = typeProxy == glslang::EbtUint || typeProxy == glslang::EbtUint64;
4638 #ifdef AMD_EXTENSIONS
4639 bool isFloat = typeProxy == glslang::EbtFloat || typeProxy == glslang::EbtDouble || typeProxy == glslang::EbtFloat16;
4641 bool isFloat = typeProxy == glslang::EbtFloat || typeProxy == glslang::EbtDouble;
4644 spv::Op opCode = spv::OpNop;
4645 int extBuiltins = -1;
4647 size_t consumedOperands = operands.size();
4648 spv::Id typeId0 = 0;
4649 if (consumedOperands > 0)
4650 typeId0 = builder.getTypeId(operands[0]);
4651 spv::Id typeId1 = 0;
4652 if (consumedOperands > 1)
4653 typeId1 = builder.getTypeId(operands[1]);
4654 spv::Id frexpIntType = 0;
4657 case glslang::EOpMin:
4659 libCall = spv::GLSLstd450FMin;
4660 else if (isUnsigned)
4661 libCall = spv::GLSLstd450UMin;
4663 libCall = spv::GLSLstd450SMin;
4664 builder.promoteScalar(precision, operands.front(), operands.back());
4666 case glslang::EOpModf:
4667 libCall = spv::GLSLstd450Modf;
4669 case glslang::EOpMax:
4671 libCall = spv::GLSLstd450FMax;
4672 else if (isUnsigned)
4673 libCall = spv::GLSLstd450UMax;
4675 libCall = spv::GLSLstd450SMax;
4676 builder.promoteScalar(precision, operands.front(), operands.back());
4678 case glslang::EOpPow:
4679 libCall = spv::GLSLstd450Pow;
4681 case glslang::EOpDot:
4682 opCode = spv::OpDot;
4684 case glslang::EOpAtan:
4685 libCall = spv::GLSLstd450Atan2;
4688 case glslang::EOpClamp:
4690 libCall = spv::GLSLstd450FClamp;
4691 else if (isUnsigned)
4692 libCall = spv::GLSLstd450UClamp;
4694 libCall = spv::GLSLstd450SClamp;
4695 builder.promoteScalar(precision, operands.front(), operands[1]);
4696 builder.promoteScalar(precision, operands.front(), operands[2]);
4698 case glslang::EOpMix:
4699 if (! builder.isBoolType(builder.getScalarTypeId(builder.getTypeId(operands.back())))) {
4701 libCall = spv::GLSLstd450FMix;
4703 opCode = spv::OpSelect;
4704 std::swap(operands.front(), operands.back());
4706 builder.promoteScalar(precision, operands.front(), operands.back());
4708 case glslang::EOpStep:
4709 libCall = spv::GLSLstd450Step;
4710 builder.promoteScalar(precision, operands.front(), operands.back());
4712 case glslang::EOpSmoothStep:
4713 libCall = spv::GLSLstd450SmoothStep;
4714 builder.promoteScalar(precision, operands[0], operands[2]);
4715 builder.promoteScalar(precision, operands[1], operands[2]);
4718 case glslang::EOpDistance:
4719 libCall = spv::GLSLstd450Distance;
4721 case glslang::EOpCross:
4722 libCall = spv::GLSLstd450Cross;
4724 case glslang::EOpFaceForward:
4725 libCall = spv::GLSLstd450FaceForward;
4727 case glslang::EOpReflect:
4728 libCall = spv::GLSLstd450Reflect;
4730 case glslang::EOpRefract:
4731 libCall = spv::GLSLstd450Refract;
4733 case glslang::EOpInterpolateAtSample:
4734 builder.addCapability(spv::CapabilityInterpolationFunction);
4735 libCall = spv::GLSLstd450InterpolateAtSample;
4737 case glslang::EOpInterpolateAtOffset:
4738 builder.addCapability(spv::CapabilityInterpolationFunction);
4739 libCall = spv::GLSLstd450InterpolateAtOffset;
4741 case glslang::EOpAddCarry:
4742 opCode = spv::OpIAddCarry;
4743 typeId = builder.makeStructResultType(typeId0, typeId0);
4744 consumedOperands = 2;
4746 case glslang::EOpSubBorrow:
4747 opCode = spv::OpISubBorrow;
4748 typeId = builder.makeStructResultType(typeId0, typeId0);
4749 consumedOperands = 2;
4751 case glslang::EOpUMulExtended:
4752 opCode = spv::OpUMulExtended;
4753 typeId = builder.makeStructResultType(typeId0, typeId0);
4754 consumedOperands = 2;
4756 case glslang::EOpIMulExtended:
4757 opCode = spv::OpSMulExtended;
4758 typeId = builder.makeStructResultType(typeId0, typeId0);
4759 consumedOperands = 2;
4761 case glslang::EOpBitfieldExtract:
4763 opCode = spv::OpBitFieldUExtract;
4765 opCode = spv::OpBitFieldSExtract;
4767 case glslang::EOpBitfieldInsert:
4768 opCode = spv::OpBitFieldInsert;
4771 case glslang::EOpFma:
4772 libCall = spv::GLSLstd450Fma;
4774 case glslang::EOpFrexp:
4776 libCall = spv::GLSLstd450FrexpStruct;
4777 assert(builder.isPointerType(typeId1));
4778 typeId1 = builder.getContainedTypeId(typeId1);
4779 #ifdef AMD_EXTENSIONS
4780 int width = builder.getScalarTypeWidth(typeId1);
4784 if (builder.getNumComponents(operands[0]) == 1)
4785 frexpIntType = builder.makeIntegerType(width, true);
4787 frexpIntType = builder.makeVectorType(builder.makeIntegerType(width, true), builder.getNumComponents(operands[0]));
4788 typeId = builder.makeStructResultType(typeId0, frexpIntType);
4789 consumedOperands = 1;
4792 case glslang::EOpLdexp:
4793 libCall = spv::GLSLstd450Ldexp;
4796 case glslang::EOpReadInvocation:
4797 return createInvocationsOperation(op, typeId, operands, typeProxy);
4799 #ifdef AMD_EXTENSIONS
4800 case glslang::EOpSwizzleInvocations:
4801 extBuiltins = getExtBuiltins(spv::E_SPV_AMD_shader_ballot);
4802 libCall = spv::SwizzleInvocationsAMD;
4804 case glslang::EOpSwizzleInvocationsMasked:
4805 extBuiltins = getExtBuiltins(spv::E_SPV_AMD_shader_ballot);
4806 libCall = spv::SwizzleInvocationsMaskedAMD;
4808 case glslang::EOpWriteInvocation:
4809 extBuiltins = getExtBuiltins(spv::E_SPV_AMD_shader_ballot);
4810 libCall = spv::WriteInvocationAMD;
4813 case glslang::EOpMin3:
4814 extBuiltins = getExtBuiltins(spv::E_SPV_AMD_shader_trinary_minmax);
4816 libCall = spv::FMin3AMD;
4819 libCall = spv::UMin3AMD;
4821 libCall = spv::SMin3AMD;
4824 case glslang::EOpMax3:
4825 extBuiltins = getExtBuiltins(spv::E_SPV_AMD_shader_trinary_minmax);
4827 libCall = spv::FMax3AMD;
4830 libCall = spv::UMax3AMD;
4832 libCall = spv::SMax3AMD;
4835 case glslang::EOpMid3:
4836 extBuiltins = getExtBuiltins(spv::E_SPV_AMD_shader_trinary_minmax);
4838 libCall = spv::FMid3AMD;
4841 libCall = spv::UMid3AMD;
4843 libCall = spv::SMid3AMD;
4847 case glslang::EOpInterpolateAtVertex:
4848 extBuiltins = getExtBuiltins(spv::E_SPV_AMD_shader_explicit_vertex_parameter);
4849 libCall = spv::InterpolateAtVertexAMD;
4859 // Use an extended instruction from the standard library.
4860 // Construct the call arguments, without modifying the original operands vector.
4861 // We might need the remaining arguments, e.g. in the EOpFrexp case.
4862 std::vector<spv::Id> callArguments(operands.begin(), operands.begin() + consumedOperands);
4863 id = builder.createBuiltinCall(typeId, extBuiltins >= 0 ? extBuiltins : stdBuiltins, libCall, callArguments);
4865 switch (consumedOperands) {
4867 // should all be handled by visitAggregate and createNoArgOperation
4871 // should all be handled by createUnaryOperation
4875 id = builder.createBinOp(opCode, typeId, operands[0], operands[1]);
4878 // anything 3 or over doesn't have l-value operands, so all should be consumed
4879 assert(consumedOperands == operands.size());
4880 id = builder.createOp(opCode, typeId, operands);
4885 // Decode the return types that were structures
4887 case glslang::EOpAddCarry:
4888 case glslang::EOpSubBorrow:
4889 builder.createStore(builder.createCompositeExtract(id, typeId0, 1), operands[2]);
4890 id = builder.createCompositeExtract(id, typeId0, 0);
4892 case glslang::EOpUMulExtended:
4893 case glslang::EOpIMulExtended:
4894 builder.createStore(builder.createCompositeExtract(id, typeId0, 0), operands[3]);
4895 builder.createStore(builder.createCompositeExtract(id, typeId0, 1), operands[2]);
4897 case glslang::EOpFrexp:
4899 assert(operands.size() == 2);
4900 if (builder.isFloatType(builder.getScalarTypeId(typeId1))) {
4901 // "exp" is floating-point type (from HLSL intrinsic)
4902 spv::Id member1 = builder.createCompositeExtract(id, frexpIntType, 1);
4903 member1 = builder.createUnaryOp(spv::OpConvertSToF, typeId1, member1);
4904 builder.createStore(member1, operands[1]);
4906 // "exp" is integer type (from GLSL built-in function)
4907 builder.createStore(builder.createCompositeExtract(id, frexpIntType, 1), operands[1]);
4908 id = builder.createCompositeExtract(id, typeId0, 0);
4915 return builder.setPrecision(id, precision);
4918 // Intrinsics with no arguments (or no return value, and no precision).
4919 spv::Id TGlslangToSpvTraverser::createNoArgOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId)
4921 // TODO: get the barrier operands correct
4924 case glslang::EOpEmitVertex:
4925 builder.createNoResultOp(spv::OpEmitVertex);
4927 case glslang::EOpEndPrimitive:
4928 builder.createNoResultOp(spv::OpEndPrimitive);
4930 case glslang::EOpBarrier:
4931 builder.createControlBarrier(spv::ScopeWorkgroup, spv::ScopeDevice, spv::MemorySemanticsMaskNone);
4933 case glslang::EOpMemoryBarrier:
4934 builder.createMemoryBarrier(spv::ScopeDevice, spv::MemorySemanticsAllMemory);
4936 case glslang::EOpMemoryBarrierAtomicCounter:
4937 builder.createMemoryBarrier(spv::ScopeDevice, spv::MemorySemanticsAtomicCounterMemoryMask);
4939 case glslang::EOpMemoryBarrierBuffer:
4940 builder.createMemoryBarrier(spv::ScopeDevice, spv::MemorySemanticsUniformMemoryMask);
4942 case glslang::EOpMemoryBarrierImage:
4943 builder.createMemoryBarrier(spv::ScopeDevice, spv::MemorySemanticsImageMemoryMask);
4945 case glslang::EOpMemoryBarrierShared:
4946 builder.createMemoryBarrier(spv::ScopeDevice, spv::MemorySemanticsWorkgroupMemoryMask);
4948 case glslang::EOpGroupMemoryBarrier:
4949 builder.createMemoryBarrier(spv::ScopeDevice, spv::MemorySemanticsCrossWorkgroupMemoryMask);
4951 case glslang::EOpAllMemoryBarrierWithGroupSync:
4952 // Control barrier with non-"None" semantic is also a memory barrier.
4953 builder.createControlBarrier(spv::ScopeDevice, spv::ScopeDevice, spv::MemorySemanticsAllMemory);
4955 case glslang::EOpGroupMemoryBarrierWithGroupSync:
4956 // Control barrier with non-"None" semantic is also a memory barrier.
4957 builder.createControlBarrier(spv::ScopeDevice, spv::ScopeDevice, spv::MemorySemanticsCrossWorkgroupMemoryMask);
4959 case glslang::EOpWorkgroupMemoryBarrier:
4960 builder.createMemoryBarrier(spv::ScopeWorkgroup, spv::MemorySemanticsWorkgroupMemoryMask);
4962 case glslang::EOpWorkgroupMemoryBarrierWithGroupSync:
4963 // Control barrier with non-"None" semantic is also a memory barrier.
4964 builder.createControlBarrier(spv::ScopeWorkgroup, spv::ScopeWorkgroup, spv::MemorySemanticsWorkgroupMemoryMask);
4966 #ifdef AMD_EXTENSIONS
4967 case glslang::EOpTime:
4969 std::vector<spv::Id> args; // Dummy arguments
4970 spv::Id id = builder.createBuiltinCall(typeId, getExtBuiltins(spv::E_SPV_AMD_gcn_shader), spv::TimeAMD, args);
4971 return builder.setPrecision(id, precision);
4975 logger->missingFunctionality("unknown operation with no arguments");
4980 spv::Id TGlslangToSpvTraverser::getSymbolId(const glslang::TIntermSymbol* symbol)
4982 auto iter = symbolValues.find(symbol->getId());
4984 if (symbolValues.end() != iter) {
4989 // it was not found, create it
4990 id = createSpvVariable(symbol);
4991 symbolValues[symbol->getId()] = id;
4993 if (symbol->getBasicType() != glslang::EbtBlock) {
4994 addDecoration(id, TranslatePrecisionDecoration(symbol->getType()));
4995 addDecoration(id, TranslateInterpolationDecoration(symbol->getType().getQualifier()));
4996 addDecoration(id, TranslateAuxiliaryStorageDecoration(symbol->getType().getQualifier()));
4997 if (symbol->getType().getQualifier().hasSpecConstantId())
4998 addDecoration(id, spv::DecorationSpecId, symbol->getType().getQualifier().layoutSpecConstantId);
4999 if (symbol->getQualifier().hasIndex())
5000 builder.addDecoration(id, spv::DecorationIndex, symbol->getQualifier().layoutIndex);
5001 if (symbol->getQualifier().hasComponent())
5002 builder.addDecoration(id, spv::DecorationComponent, symbol->getQualifier().layoutComponent);
5003 if (glslangIntermediate->getXfbMode()) {
5004 builder.addCapability(spv::CapabilityTransformFeedback);
5005 if (symbol->getQualifier().hasXfbStride())
5006 builder.addDecoration(id, spv::DecorationXfbStride, symbol->getQualifier().layoutXfbStride);
5007 if (symbol->getQualifier().hasXfbBuffer())
5008 builder.addDecoration(id, spv::DecorationXfbBuffer, symbol->getQualifier().layoutXfbBuffer);
5009 if (symbol->getQualifier().hasXfbOffset())
5010 builder.addDecoration(id, spv::DecorationOffset, symbol->getQualifier().layoutXfbOffset);
5012 // atomic counters use this:
5013 if (symbol->getQualifier().hasOffset())
5014 builder.addDecoration(id, spv::DecorationOffset, symbol->getQualifier().layoutOffset);
5017 if (symbol->getQualifier().hasLocation())
5018 builder.addDecoration(id, spv::DecorationLocation, symbol->getQualifier().layoutLocation);
5019 addDecoration(id, TranslateInvariantDecoration(symbol->getType().getQualifier()));
5020 if (symbol->getQualifier().hasStream() && glslangIntermediate->isMultiStream()) {
5021 builder.addCapability(spv::CapabilityGeometryStreams);
5022 builder.addDecoration(id, spv::DecorationStream, symbol->getQualifier().layoutStream);
5024 if (symbol->getQualifier().hasSet())
5025 builder.addDecoration(id, spv::DecorationDescriptorSet, symbol->getQualifier().layoutSet);
5026 else if (IsDescriptorResource(symbol->getType())) {
5028 builder.addDecoration(id, spv::DecorationDescriptorSet, 0);
5030 if (symbol->getQualifier().hasBinding())
5031 builder.addDecoration(id, spv::DecorationBinding, symbol->getQualifier().layoutBinding);
5032 if (symbol->getQualifier().hasAttachment())
5033 builder.addDecoration(id, spv::DecorationInputAttachmentIndex, symbol->getQualifier().layoutAttachment);
5034 if (glslangIntermediate->getXfbMode()) {
5035 builder.addCapability(spv::CapabilityTransformFeedback);
5036 if (symbol->getQualifier().hasXfbStride())
5037 builder.addDecoration(id, spv::DecorationXfbStride, symbol->getQualifier().layoutXfbStride);
5038 if (symbol->getQualifier().hasXfbBuffer())
5039 builder.addDecoration(id, spv::DecorationXfbBuffer, symbol->getQualifier().layoutXfbBuffer);
5042 if (symbol->getType().isImage()) {
5043 std::vector<spv::Decoration> memory;
5044 TranslateMemoryDecoration(symbol->getType().getQualifier(), memory);
5045 for (unsigned int i = 0; i < memory.size(); ++i)
5046 addDecoration(id, memory[i]);
5049 // built-in variable decorations
5050 spv::BuiltIn builtIn = TranslateBuiltInDecoration(symbol->getQualifier().builtIn, false);
5051 if (builtIn != spv::BuiltInMax)
5052 addDecoration(id, spv::DecorationBuiltIn, (int)builtIn);
5054 #ifdef NV_EXTENSIONS
5055 if (builtIn == spv::BuiltInSampleMask) {
5056 spv::Decoration decoration;
5057 // GL_NV_sample_mask_override_coverage extension
5058 if (glslangIntermediate->getLayoutOverrideCoverage())
5059 decoration = (spv::Decoration)spv::DecorationOverrideCoverageNV;
5061 decoration = (spv::Decoration)spv::DecorationMax;
5062 addDecoration(id, decoration);
5063 if (decoration != spv::DecorationMax) {
5064 builder.addExtension(spv::E_SPV_NV_sample_mask_override_coverage);
5067 else if (builtIn == spv::BuiltInLayer) {
5068 // SPV_NV_viewport_array2 extension
5069 if (symbol->getQualifier().layoutViewportRelative)
5071 addDecoration(id, (spv::Decoration)spv::DecorationViewportRelativeNV);
5072 builder.addCapability(spv::CapabilityShaderViewportMaskNV);
5073 builder.addExtension(spv::E_SPV_NV_viewport_array2);
5075 if(symbol->getQualifier().layoutSecondaryViewportRelativeOffset != -2048)
5077 addDecoration(id, (spv::Decoration)spv::DecorationSecondaryViewportRelativeNV, symbol->getQualifier().layoutSecondaryViewportRelativeOffset);
5078 builder.addCapability(spv::CapabilityShaderStereoViewNV);
5079 builder.addExtension(spv::E_SPV_NV_stereo_view_rendering);
5083 if (symbol->getQualifier().layoutPassthrough) {
5084 addDecoration(id, spv::DecorationPassthroughNV);
5085 builder.addCapability(spv::CapabilityGeometryShaderPassthroughNV);
5086 builder.addExtension(spv::E_SPV_NV_geometry_shader_passthrough);
5093 // If 'dec' is valid, add no-operand decoration to an object
5094 void TGlslangToSpvTraverser::addDecoration(spv::Id id, spv::Decoration dec)
5096 if (dec != spv::DecorationMax)
5097 builder.addDecoration(id, dec);
5100 // If 'dec' is valid, add a one-operand decoration to an object
5101 void TGlslangToSpvTraverser::addDecoration(spv::Id id, spv::Decoration dec, unsigned value)
5103 if (dec != spv::DecorationMax)
5104 builder.addDecoration(id, dec, value);
5107 // If 'dec' is valid, add a no-operand decoration to a struct member
5108 void TGlslangToSpvTraverser::addMemberDecoration(spv::Id id, int member, spv::Decoration dec)
5110 if (dec != spv::DecorationMax)
5111 builder.addMemberDecoration(id, (unsigned)member, dec);
5114 // If 'dec' is valid, add a one-operand decoration to a struct member
5115 void TGlslangToSpvTraverser::addMemberDecoration(spv::Id id, int member, spv::Decoration dec, unsigned value)
5117 if (dec != spv::DecorationMax)
5118 builder.addMemberDecoration(id, (unsigned)member, dec, value);
5121 // Make a full tree of instructions to build a SPIR-V specialization constant,
5122 // or regular constant if possible.
5124 // TBD: this is not yet done, nor verified to be the best design, it does do the leaf symbols though
5126 // Recursively walk the nodes. The nodes form a tree whose leaves are
5127 // regular constants, which themselves are trees that createSpvConstant()
5128 // recursively walks. So, this function walks the "top" of the tree:
5129 // - emit specialization constant-building instructions for specConstant
5130 // - when running into a non-spec-constant, switch to createSpvConstant()
5131 spv::Id TGlslangToSpvTraverser::createSpvConstant(const glslang::TIntermTyped& node)
5133 assert(node.getQualifier().isConstant());
5135 // Handle front-end constants first (non-specialization constants).
5136 if (! node.getQualifier().specConstant) {
5137 // hand off to the non-spec-constant path
5138 assert(node.getAsConstantUnion() != nullptr || node.getAsSymbolNode() != nullptr);
5140 return createSpvConstantFromConstUnionArray(node.getType(), node.getAsConstantUnion() ? node.getAsConstantUnion()->getConstArray() : node.getAsSymbolNode()->getConstArray(),
5144 // We now know we have a specialization constant to build
5146 // gl_WorkGroupSize is a special case until the front-end handles hierarchical specialization constants,
5147 // even then, it's specialization ids are handled by special case syntax in GLSL: layout(local_size_x = ...
5148 if (node.getType().getQualifier().builtIn == glslang::EbvWorkGroupSize) {
5149 std::vector<spv::Id> dimConstId;
5150 for (int dim = 0; dim < 3; ++dim) {
5151 bool specConst = (glslangIntermediate->getLocalSizeSpecId(dim) != glslang::TQualifier::layoutNotSet);
5152 dimConstId.push_back(builder.makeUintConstant(glslangIntermediate->getLocalSize(dim), specConst));
5154 addDecoration(dimConstId.back(), spv::DecorationSpecId, glslangIntermediate->getLocalSizeSpecId(dim));
5156 return builder.makeCompositeConstant(builder.makeVectorType(builder.makeUintType(32), 3), dimConstId, true);
5159 // An AST node labelled as specialization constant should be a symbol node.
5160 // Its initializer should either be a sub tree with constant nodes, or a constant union array.
5161 if (auto* sn = node.getAsSymbolNode()) {
5162 if (auto* sub_tree = sn->getConstSubtree()) {
5163 // Traverse the constant constructor sub tree like generating normal run-time instructions.
5164 // During the AST traversal, if the node is marked as 'specConstant', SpecConstantOpModeGuard
5165 // will set the builder into spec constant op instruction generating mode.
5166 sub_tree->traverse(this);
5167 return accessChainLoad(sub_tree->getType());
5168 } else if (auto* const_union_array = &sn->getConstArray()){
5170 spv::Id id = createSpvConstantFromConstUnionArray(sn->getType(), *const_union_array, nextConst, true);
5171 builder.addName(id, sn->getName().c_str());
5176 // Neither a front-end constant node, nor a specialization constant node with constant union array or
5177 // constant sub tree as initializer.
5178 logger->missingFunctionality("Neither a front-end constant nor a spec constant.");
5180 return spv::NoResult;
5183 // Use 'consts' as the flattened glslang source of scalar constants to recursively
5184 // build the aggregate SPIR-V constant.
5186 // If there are not enough elements present in 'consts', 0 will be substituted;
5187 // an empty 'consts' can be used to create a fully zeroed SPIR-V constant.
5189 spv::Id TGlslangToSpvTraverser::createSpvConstantFromConstUnionArray(const glslang::TType& glslangType, const glslang::TConstUnionArray& consts, int& nextConst, bool specConstant)
5191 // vector of constants for SPIR-V
5192 std::vector<spv::Id> spvConsts;
5194 // Type is used for struct and array constants
5195 spv::Id typeId = convertGlslangToSpvType(glslangType);
5197 if (glslangType.isArray()) {
5198 glslang::TType elementType(glslangType, 0);
5199 for (int i = 0; i < glslangType.getOuterArraySize(); ++i)
5200 spvConsts.push_back(createSpvConstantFromConstUnionArray(elementType, consts, nextConst, false));
5201 } else if (glslangType.isMatrix()) {
5202 glslang::TType vectorType(glslangType, 0);
5203 for (int col = 0; col < glslangType.getMatrixCols(); ++col)
5204 spvConsts.push_back(createSpvConstantFromConstUnionArray(vectorType, consts, nextConst, false));
5205 } else if (glslangType.getStruct()) {
5206 glslang::TVector<glslang::TTypeLoc>::const_iterator iter;
5207 for (iter = glslangType.getStruct()->begin(); iter != glslangType.getStruct()->end(); ++iter)
5208 spvConsts.push_back(createSpvConstantFromConstUnionArray(*iter->type, consts, nextConst, false));
5209 } else if (glslangType.getVectorSize() > 1) {
5210 for (unsigned int i = 0; i < (unsigned int)glslangType.getVectorSize(); ++i) {
5211 bool zero = nextConst >= consts.size();
5212 switch (glslangType.getBasicType()) {
5213 case glslang::EbtInt:
5214 spvConsts.push_back(builder.makeIntConstant(zero ? 0 : consts[nextConst].getIConst()));
5216 case glslang::EbtUint:
5217 spvConsts.push_back(builder.makeUintConstant(zero ? 0 : consts[nextConst].getUConst()));
5219 case glslang::EbtInt64:
5220 spvConsts.push_back(builder.makeInt64Constant(zero ? 0 : consts[nextConst].getI64Const()));
5222 case glslang::EbtUint64:
5223 spvConsts.push_back(builder.makeUint64Constant(zero ? 0 : consts[nextConst].getU64Const()));
5225 case glslang::EbtFloat:
5226 spvConsts.push_back(builder.makeFloatConstant(zero ? 0.0F : (float)consts[nextConst].getDConst()));
5228 case glslang::EbtDouble:
5229 spvConsts.push_back(builder.makeDoubleConstant(zero ? 0.0 : consts[nextConst].getDConst()));
5231 #ifdef AMD_EXTENSIONS
5232 case glslang::EbtFloat16:
5233 spvConsts.push_back(builder.makeFloat16Constant(zero ? 0.0F : (float)consts[nextConst].getDConst()));
5236 case glslang::EbtBool:
5237 spvConsts.push_back(builder.makeBoolConstant(zero ? false : consts[nextConst].getBConst()));
5246 // we have a non-aggregate (scalar) constant
5247 bool zero = nextConst >= consts.size();
5249 switch (glslangType.getBasicType()) {
5250 case glslang::EbtInt:
5251 scalar = builder.makeIntConstant(zero ? 0 : consts[nextConst].getIConst(), specConstant);
5253 case glslang::EbtUint:
5254 scalar = builder.makeUintConstant(zero ? 0 : consts[nextConst].getUConst(), specConstant);
5256 case glslang::EbtInt64:
5257 scalar = builder.makeInt64Constant(zero ? 0 : consts[nextConst].getI64Const(), specConstant);
5259 case glslang::EbtUint64:
5260 scalar = builder.makeUint64Constant(zero ? 0 : consts[nextConst].getU64Const(), specConstant);
5262 case glslang::EbtFloat:
5263 scalar = builder.makeFloatConstant(zero ? 0.0F : (float)consts[nextConst].getDConst(), specConstant);
5265 case glslang::EbtDouble:
5266 scalar = builder.makeDoubleConstant(zero ? 0.0 : consts[nextConst].getDConst(), specConstant);
5268 #ifdef AMD_EXTENSIONS
5269 case glslang::EbtFloat16:
5270 scalar = builder.makeFloat16Constant(zero ? 0.0F : (float)consts[nextConst].getDConst(), specConstant);
5273 case glslang::EbtBool:
5274 scalar = builder.makeBoolConstant(zero ? false : consts[nextConst].getBConst(), specConstant);
5284 return builder.makeCompositeConstant(typeId, spvConsts);
5287 // Return true if the node is a constant or symbol whose reading has no
5288 // non-trivial observable cost or effect.
5289 bool TGlslangToSpvTraverser::isTrivialLeaf(const glslang::TIntermTyped* node)
5291 // don't know what this is
5292 if (node == nullptr)
5295 // a constant is safe
5296 if (node->getAsConstantUnion() != nullptr)
5299 // not a symbol means non-trivial
5300 if (node->getAsSymbolNode() == nullptr)
5303 // a symbol, depends on what's being read
5304 switch (node->getType().getQualifier().storage) {
5305 case glslang::EvqTemporary:
5306 case glslang::EvqGlobal:
5307 case glslang::EvqIn:
5308 case glslang::EvqInOut:
5309 case glslang::EvqConst:
5310 case glslang::EvqConstReadOnly:
5311 case glslang::EvqUniform:
5318 // A node is trivial if it is a single operation with no side effects.
5319 // Error on the side of saying non-trivial.
5320 // Return true if trivial.
5321 bool TGlslangToSpvTraverser::isTrivial(const glslang::TIntermTyped* node)
5323 if (node == nullptr)
5326 // symbols and constants are trivial
5327 if (isTrivialLeaf(node))
5330 // otherwise, it needs to be a simple operation or one or two leaf nodes
5332 // not a simple operation
5333 const glslang::TIntermBinary* binaryNode = node->getAsBinaryNode();
5334 const glslang::TIntermUnary* unaryNode = node->getAsUnaryNode();
5335 if (binaryNode == nullptr && unaryNode == nullptr)
5338 // not on leaf nodes
5339 if (binaryNode && (! isTrivialLeaf(binaryNode->getLeft()) || ! isTrivialLeaf(binaryNode->getRight())))
5342 if (unaryNode && ! isTrivialLeaf(unaryNode->getOperand())) {
5346 switch (node->getAsOperator()->getOp()) {
5347 case glslang::EOpLogicalNot:
5348 case glslang::EOpConvIntToBool:
5349 case glslang::EOpConvUintToBool:
5350 case glslang::EOpConvFloatToBool:
5351 case glslang::EOpConvDoubleToBool:
5352 case glslang::EOpEqual:
5353 case glslang::EOpNotEqual:
5354 case glslang::EOpLessThan:
5355 case glslang::EOpGreaterThan:
5356 case glslang::EOpLessThanEqual:
5357 case glslang::EOpGreaterThanEqual:
5358 case glslang::EOpIndexDirect:
5359 case glslang::EOpIndexDirectStruct:
5360 case glslang::EOpLogicalXor:
5361 case glslang::EOpAny:
5362 case glslang::EOpAll:
5369 // Emit short-circuiting code, where 'right' is never evaluated unless
5370 // the left side is true (for &&) or false (for ||).
5371 spv::Id TGlslangToSpvTraverser::createShortCircuit(glslang::TOperator op, glslang::TIntermTyped& left, glslang::TIntermTyped& right)
5373 spv::Id boolTypeId = builder.makeBoolType();
5375 // emit left operand
5376 builder.clearAccessChain();
5377 left.traverse(this);
5378 spv::Id leftId = accessChainLoad(left.getType());
5380 // Operands to accumulate OpPhi operands
5381 std::vector<spv::Id> phiOperands;
5382 // accumulate left operand's phi information
5383 phiOperands.push_back(leftId);
5384 phiOperands.push_back(builder.getBuildPoint()->getId());
5386 // Make the two kinds of operation symmetric with a "!"
5387 // || => emit "if (! left) result = right"
5388 // && => emit "if ( left) result = right"
5390 // TODO: this runtime "not" for || could be avoided by adding functionality
5391 // to 'builder' to have an "else" without an "then"
5392 if (op == glslang::EOpLogicalOr)
5393 leftId = builder.createUnaryOp(spv::OpLogicalNot, boolTypeId, leftId);
5395 // make an "if" based on the left value
5396 spv::Builder::If ifBuilder(leftId, builder);
5398 // emit right operand as the "then" part of the "if"
5399 builder.clearAccessChain();
5400 right.traverse(this);
5401 spv::Id rightId = accessChainLoad(right.getType());
5403 // accumulate left operand's phi information
5404 phiOperands.push_back(rightId);
5405 phiOperands.push_back(builder.getBuildPoint()->getId());
5408 ifBuilder.makeEndIf();
5410 // phi together the two results
5411 return builder.createOp(spv::OpPhi, boolTypeId, phiOperands);
5414 // Return type Id of the imported set of extended instructions corresponds to the name.
5415 // Import this set if it has not been imported yet.
5416 spv::Id TGlslangToSpvTraverser::getExtBuiltins(const char* name)
5418 if (extBuiltinMap.find(name) != extBuiltinMap.end())
5419 return extBuiltinMap[name];
5421 builder.addExtension(name);
5422 spv::Id extBuiltins = builder.import(name);
5423 extBuiltinMap[name] = extBuiltins;
5428 }; // end anonymous namespace
5432 void GetSpirvVersion(std::string& version)
5434 const int bufSize = 100;
5436 snprintf(buf, bufSize, "0x%08x, Revision %d", spv::Version, spv::Revision);
5440 // Write SPIR-V out to a binary file
5441 void OutputSpvBin(const std::vector<unsigned int>& spirv, const char* baseName)
5444 out.open(baseName, std::ios::binary | std::ios::out);
5446 printf("ERROR: Failed to open file: %s\n", baseName);
5447 for (int i = 0; i < (int)spirv.size(); ++i) {
5448 unsigned int word = spirv[i];
5449 out.write((const char*)&word, 4);
5454 // Write SPIR-V out to a text file with 32-bit hexadecimal words
5455 void OutputSpvHex(const std::vector<unsigned int>& spirv, const char* baseName, const char* varName)
5458 out.open(baseName, std::ios::binary | std::ios::out);
5460 printf("ERROR: Failed to open file: %s\n", baseName);
5461 out << "\t// " GLSLANG_REVISION " " GLSLANG_DATE << std::endl;
5462 if (varName != nullptr) {
5463 out << "\t #pragma once" << std::endl;
5464 out << "const uint32_t " << varName << "[] = {" << std::endl;
5466 const int WORDS_PER_LINE = 8;
5467 for (int i = 0; i < (int)spirv.size(); i += WORDS_PER_LINE) {
5469 for (int j = 0; j < WORDS_PER_LINE && i + j < (int)spirv.size(); ++j) {
5470 const unsigned int word = spirv[i + j];
5471 out << "0x" << std::hex << std::setw(8) << std::setfill('0') << word;
5472 if (i + j + 1 < (int)spirv.size()) {
5478 if (varName != nullptr) {
5485 // Set up the glslang traversal
5487 void GlslangToSpv(const glslang::TIntermediate& intermediate, std::vector<unsigned int>& spirv)
5489 spv::SpvBuildLogger logger;
5490 GlslangToSpv(intermediate, spirv, &logger);
5493 void GlslangToSpv(const glslang::TIntermediate& intermediate, std::vector<unsigned int>& spirv, spv::SpvBuildLogger* logger)
5495 TIntermNode* root = intermediate.getTreeRoot();
5500 glslang::GetThreadPoolAllocator().push();
5502 TGlslangToSpvTraverser it(&intermediate, logger);
5503 root->traverse(&it);
5507 glslang::GetThreadPoolAllocator().pop();
5510 }; // end namespace glslang