| // |
| //Copyright (C) 2014 LunarG, Inc. |
| // |
| //All rights reserved. |
| // |
| //Redistribution and use in source and binary forms, with or without |
| //modification, are permitted provided that the following conditions |
| //are met: |
| // |
| // Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // |
| // Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // |
| // Neither the name of 3Dlabs Inc. Ltd. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| //THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| //"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| //LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| //FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| //COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| //INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| //BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| //LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| //CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| //LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
| //ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| //POSSIBILITY OF SUCH DAMAGE. |
| |
| // |
| // Author: John Kessenich, LunarG |
| // |
| // Visit the nodes in the glslang intermediate tree representation to |
| // translate them to SPIR-V. |
| // |
| |
| #include "spirv.hpp" |
| #include "GlslangToSpv.h" |
| #include "SpvBuilder.h" |
| namespace spv { |
| #include "GLSL.std.450.h" |
| } |
| |
| // Glslang includes |
| #include "../glslang/MachineIndependent/localintermediate.h" |
| #include "../glslang/MachineIndependent/SymbolTable.h" |
| #include "../glslang/Include/Common.h" |
| |
| #include <string> |
| #include <map> |
| #include <list> |
| #include <vector> |
| #include <stack> |
| #include <fstream> |
| |
| namespace { |
| |
| const int GlslangMagic = 0x51a; |
| |
| // |
| // The main holder of information for translating glslang to SPIR-V. |
| // |
| // Derives from the AST walking base class. |
| // |
| class TGlslangToSpvTraverser : public glslang::TIntermTraverser { |
| public: |
| TGlslangToSpvTraverser(const glslang::TIntermediate*); |
| virtual ~TGlslangToSpvTraverser(); |
| |
| bool visitAggregate(glslang::TVisit, glslang::TIntermAggregate*); |
| bool visitBinary(glslang::TVisit, glslang::TIntermBinary*); |
| void visitConstantUnion(glslang::TIntermConstantUnion*); |
| bool visitSelection(glslang::TVisit, glslang::TIntermSelection*); |
| bool visitSwitch(glslang::TVisit, glslang::TIntermSwitch*); |
| void visitSymbol(glslang::TIntermSymbol* symbol); |
| bool visitUnary(glslang::TVisit, glslang::TIntermUnary*); |
| bool visitLoop(glslang::TVisit, glslang::TIntermLoop*); |
| bool visitBranch(glslang::TVisit visit, glslang::TIntermBranch*); |
| |
| void dumpSpv(std::vector<unsigned int>& out) { builder.dump(out); } |
| |
| protected: |
| spv::Id createSpvVariable(const glslang::TIntermSymbol*); |
| spv::Id getSampledType(const glslang::TSampler&); |
| spv::Id convertGlslangToSpvType(const glslang::TType& type); |
| spv::Id convertGlslangToSpvType(const glslang::TType& type, bool explicitLayout); |
| bool requiresExplicitLayout(const glslang::TType& type) const; |
| int getArrayStride(const glslang::TType& arrayType); |
| int getMatrixStride(const glslang::TType& matrixType); |
| void updateMemberOffset(const glslang::TType& structType, const glslang::TType& memberType, int& currentOffset, int& nextOffset); |
| |
| bool isShaderEntrypoint(const glslang::TIntermAggregate* node); |
| void makeFunctions(const glslang::TIntermSequence&); |
| void makeGlobalInitializers(const glslang::TIntermSequence&); |
| void visitFunctions(const glslang::TIntermSequence&); |
| void handleFunctionEntry(const glslang::TIntermAggregate* node); |
| void translateArguments(const glslang::TIntermAggregate& node, std::vector<spv::Id>& arguments); |
| void translateArguments(glslang::TIntermUnary& node, std::vector<spv::Id>& arguments); |
| spv::Id createImageTextureFunctionCall(glslang::TIntermOperator* node); |
| spv::Id handleUserFunctionCall(const glslang::TIntermAggregate*); |
| |
| spv::Id createBinaryOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId, spv::Id left, spv::Id right, glslang::TBasicType typeProxy, bool reduceComparison = true); |
| spv::Id createUnaryOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId, spv::Id operand,glslang::TBasicType typeProxy); |
| spv::Id createConversion(glslang::TOperator op, spv::Decoration precision, spv::Id destTypeId, spv::Id operand); |
| spv::Id makeSmearedConstant(spv::Id constant, int vectorSize); |
| spv::Id createAtomicOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId, std::vector<spv::Id>& operands, glslang::TBasicType typeProxy); |
| spv::Id createMiscOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId, std::vector<spv::Id>& operands, glslang::TBasicType typeProxy); |
| spv::Id createNoArgOperation(glslang::TOperator op); |
| spv::Id getSymbolId(const glslang::TIntermSymbol* node); |
| void addDecoration(spv::Id id, spv::Decoration dec); |
| void addMemberDecoration(spv::Id id, int member, spv::Decoration dec); |
| spv::Id createSpvConstant(const glslang::TType& type, const glslang::TConstUnionArray&, int& nextConst); |
| bool isTrivialLeaf(const glslang::TIntermTyped* node); |
| bool isTrivial(const glslang::TIntermTyped* node); |
| spv::Id createShortCircuit(glslang::TOperator, glslang::TIntermTyped& left, glslang::TIntermTyped& right); |
| |
| spv::Function* shaderEntry; |
| int sequenceDepth; |
| |
| // There is a 1:1 mapping between a spv builder and a module; this is thread safe |
| spv::Builder builder; |
| bool inMain; |
| bool mainTerminated; |
| bool linkageOnly; |
| const glslang::TIntermediate* glslangIntermediate; |
| spv::Id stdBuiltins; |
| |
| std::unordered_map<int, spv::Id> symbolValues; |
| std::unordered_set<int> constReadOnlyParameters; // set of formal function parameters that have glslang qualifier constReadOnly, so we know they are not local function "const" that are write-once |
| std::unordered_map<std::string, spv::Function*> functionMap; |
| std::unordered_map<const glslang::TTypeList*, spv::Id> structMap; |
| std::unordered_map<const glslang::TTypeList*, std::vector<int> > memberRemapper; // for mapping glslang block indices to spv indices (e.g., due to hidden members) |
| std::stack<bool> breakForLoop; // false means break for switch |
| std::stack<glslang::TIntermTyped*> loopTerminal; // code from the last part of a for loop: for(...; ...; terminal), needed for e.g., continue }; |
| }; |
| |
| // |
| // Helper functions for translating glslang representations to SPIR-V enumerants. |
| // |
| |
| // Translate glslang profile to SPIR-V source language. |
| spv::SourceLanguage TranslateSourceLanguage(EProfile profile) |
| { |
| switch (profile) { |
| case ENoProfile: |
| case ECoreProfile: |
| case ECompatibilityProfile: |
| return spv::SourceLanguageGLSL; |
| case EEsProfile: |
| return spv::SourceLanguageESSL; |
| default: |
| return spv::SourceLanguageUnknown; |
| } |
| } |
| |
| // Translate glslang language (stage) to SPIR-V execution model. |
| spv::ExecutionModel TranslateExecutionModel(EShLanguage stage) |
| { |
| switch (stage) { |
| case EShLangVertex: return spv::ExecutionModelVertex; |
| case EShLangTessControl: return spv::ExecutionModelTessellationControl; |
| case EShLangTessEvaluation: return spv::ExecutionModelTessellationEvaluation; |
| case EShLangGeometry: return spv::ExecutionModelGeometry; |
| case EShLangFragment: return spv::ExecutionModelFragment; |
| case EShLangCompute: return spv::ExecutionModelGLCompute; |
| default: |
| spv::MissingFunctionality("GLSL stage"); |
| return spv::ExecutionModelFragment; |
| } |
| } |
| |
| // Translate glslang type to SPIR-V storage class. |
| spv::StorageClass TranslateStorageClass(const glslang::TType& type) |
| { |
| if (type.getQualifier().isPipeInput()) |
| return spv::StorageClassInput; |
| else if (type.getQualifier().isPipeOutput()) |
| return spv::StorageClassOutput; |
| else if (type.getQualifier().isUniformOrBuffer()) { |
| if (type.getBasicType() == glslang::EbtBlock) |
| return spv::StorageClassUniform; |
| else if (type.getBasicType() == glslang::EbtAtomicUint) |
| return spv::StorageClassAtomicCounter; |
| else |
| return spv::StorageClassUniformConstant; |
| // TODO: how are we distuingishing between default and non-default non-writable uniforms? Do default uniforms even exist? |
| } else { |
| switch (type.getQualifier().storage) { |
| case glslang::EvqShared: return spv::StorageClassWorkgroupLocal; break; |
| case glslang::EvqGlobal: return spv::StorageClassPrivateGlobal; |
| case glslang::EvqConstReadOnly: return spv::StorageClassFunction; |
| case glslang::EvqTemporary: return spv::StorageClassFunction; |
| default: |
| spv::MissingFunctionality("unknown glslang storage class"); |
| return spv::StorageClassFunction; |
| } |
| } |
| } |
| |
| // Translate glslang sampler type to SPIR-V dimensionality. |
| spv::Dim TranslateDimensionality(const glslang::TSampler& sampler) |
| { |
| switch (sampler.dim) { |
| case glslang::Esd1D: return spv::Dim1D; |
| case glslang::Esd2D: return spv::Dim2D; |
| case glslang::Esd3D: return spv::Dim3D; |
| case glslang::EsdCube: return spv::DimCube; |
| case glslang::EsdRect: return spv::DimRect; |
| case glslang::EsdBuffer: return spv::DimBuffer; |
| default: |
| spv::MissingFunctionality("unknown sampler dimension"); |
| return spv::Dim2D; |
| } |
| } |
| |
| // Translate glslang type to SPIR-V precision decorations. |
| spv::Decoration TranslatePrecisionDecoration(const glslang::TType& type) |
| { |
| switch (type.getQualifier().precision) { |
| case glslang::EpqLow: return spv::DecorationRelaxedPrecision; // TODO: Map instead to 16-bit types? |
| case glslang::EpqMedium: return spv::DecorationRelaxedPrecision; |
| case glslang::EpqHigh: return spv::NoPrecision; |
| default: |
| return spv::NoPrecision; |
| } |
| } |
| |
| // Translate glslang type to SPIR-V block decorations. |
| spv::Decoration TranslateBlockDecoration(const glslang::TType& type) |
| { |
| if (type.getBasicType() == glslang::EbtBlock) { |
| switch (type.getQualifier().storage) { |
| case glslang::EvqUniform: return spv::DecorationBlock; |
| case glslang::EvqBuffer: return spv::DecorationBufferBlock; |
| case glslang::EvqVaryingIn: return spv::DecorationBlock; |
| case glslang::EvqVaryingOut: return spv::DecorationBlock; |
| default: |
| spv::MissingFunctionality("kind of block"); |
| break; |
| } |
| } |
| |
| return (spv::Decoration)spv::BadValue; |
| } |
| |
| // Translate glslang type to SPIR-V layout decorations. |
| spv::Decoration TranslateLayoutDecoration(const glslang::TType& type) |
| { |
| if (type.isMatrix()) { |
| switch (type.getQualifier().layoutMatrix) { |
| case glslang::ElmRowMajor: |
| return spv::DecorationRowMajor; |
| default: |
| return spv::DecorationColMajor; |
| } |
| } else { |
| switch (type.getBasicType()) { |
| default: |
| return (spv::Decoration)spv::BadValue; |
| break; |
| case glslang::EbtBlock: |
| switch (type.getQualifier().storage) { |
| case glslang::EvqUniform: |
| case glslang::EvqBuffer: |
| switch (type.getQualifier().layoutPacking) { |
| case glslang::ElpShared: return spv::DecorationGLSLShared; |
| case glslang::ElpPacked: return spv::DecorationGLSLPacked; |
| default: |
| return (spv::Decoration)spv::BadValue; |
| } |
| case glslang::EvqVaryingIn: |
| case glslang::EvqVaryingOut: |
| if (type.getQualifier().layoutPacking != glslang::ElpNone) |
| spv::MissingFunctionality("in/out block layout"); |
| return (spv::Decoration)spv::BadValue; |
| default: |
| spv::MissingFunctionality("block storage qualification"); |
| return (spv::Decoration)spv::BadValue; |
| } |
| } |
| } |
| } |
| |
| // Translate glslang type to SPIR-V interpolation decorations. |
| spv::Decoration TranslateInterpolationDecoration(const glslang::TType& type) |
| { |
| if (type.getQualifier().smooth) |
| return spv::DecorationSmooth; |
| if (type.getQualifier().nopersp) |
| return spv::DecorationNoperspective; |
| else if (type.getQualifier().patch) |
| return spv::DecorationPatch; |
| else if (type.getQualifier().flat) |
| return spv::DecorationFlat; |
| else if (type.getQualifier().centroid) |
| return spv::DecorationCentroid; |
| else if (type.getQualifier().sample) |
| return spv::DecorationSample; |
| else |
| return (spv::Decoration)spv::BadValue; |
| } |
| |
| // If glslang type is invaraiant, return SPIR-V invariant decoration. |
| spv::Decoration TranslateInvariantDecoration(const glslang::TType& type) |
| { |
| if (type.getQualifier().invariant) |
| return spv::DecorationInvariant; |
| else |
| return (spv::Decoration)spv::BadValue; |
| } |
| |
| // Translate glslang built-in variable to SPIR-V built in decoration. |
| spv::BuiltIn TranslateBuiltInDecoration(glslang::TBuiltInVariable builtIn) |
| { |
| switch (builtIn) { |
| case glslang::EbvPosition: return spv::BuiltInPosition; |
| case glslang::EbvPointSize: return spv::BuiltInPointSize; |
| case glslang::EbvClipDistance: return spv::BuiltInClipDistance; |
| case glslang::EbvCullDistance: return spv::BuiltInCullDistance; |
| case glslang::EbvVertexId: return spv::BuiltInVertexId; |
| case glslang::EbvInstanceId: return spv::BuiltInInstanceId; |
| case glslang::EbvBaseVertex: |
| case glslang::EbvBaseInstance: |
| case glslang::EbvDrawId: |
| // TODO: Add SPIR-V builtin ID. |
| spv::MissingFunctionality("Draw parameters"); |
| return (spv::BuiltIn)spv::BadValue; |
| case glslang::EbvPrimitiveId: return spv::BuiltInPrimitiveId; |
| case glslang::EbvInvocationId: return spv::BuiltInInvocationId; |
| case glslang::EbvLayer: return spv::BuiltInLayer; |
| case glslang::EbvViewportIndex: return spv::BuiltInViewportIndex; |
| case glslang::EbvTessLevelInner: return spv::BuiltInTessLevelInner; |
| case glslang::EbvTessLevelOuter: return spv::BuiltInTessLevelOuter; |
| case glslang::EbvTessCoord: return spv::BuiltInTessCoord; |
| case glslang::EbvPatchVertices: return spv::BuiltInPatchVertices; |
| case glslang::EbvFragCoord: return spv::BuiltInFragCoord; |
| case glslang::EbvPointCoord: return spv::BuiltInPointCoord; |
| case glslang::EbvFace: return spv::BuiltInFrontFacing; |
| case glslang::EbvSampleId: return spv::BuiltInSampleId; |
| case glslang::EbvSamplePosition: return spv::BuiltInSamplePosition; |
| case glslang::EbvSampleMask: return spv::BuiltInSampleMask; |
| case glslang::EbvFragColor: return spv::BuiltInFragColor; |
| case glslang::EbvFragData: return spv::BuiltInFragColor; |
| case glslang::EbvFragDepth: return spv::BuiltInFragDepth; |
| case glslang::EbvHelperInvocation: return spv::BuiltInHelperInvocation; |
| case glslang::EbvNumWorkGroups: return spv::BuiltInNumWorkgroups; |
| case glslang::EbvWorkGroupSize: return spv::BuiltInWorkgroupSize; |
| case glslang::EbvWorkGroupId: return spv::BuiltInWorkgroupId; |
| case glslang::EbvLocalInvocationId: return spv::BuiltInLocalInvocationId; |
| case glslang::EbvLocalInvocationIndex: return spv::BuiltInLocalInvocationIndex; |
| case glslang::EbvGlobalInvocationId: return spv::BuiltInGlobalInvocationId; |
| default: return (spv::BuiltIn)spv::BadValue; |
| } |
| } |
| |
| // Translate glslang image layout format to SPIR-V image format. |
| spv::ImageFormat TranslateImageFormat(const glslang::TType& type) |
| { |
| assert(type.getBasicType() == glslang::EbtSampler); |
| |
| switch (type.getQualifier().layoutFormat) { |
| case glslang::ElfNone: return spv::ImageFormatUnknown; |
| case glslang::ElfRgba32f: return spv::ImageFormatRgba32f; |
| case glslang::ElfRgba16f: return spv::ImageFormatRgba16f; |
| case glslang::ElfR32f: return spv::ImageFormatR32f; |
| case glslang::ElfRgba8: return spv::ImageFormatRgba8; |
| case glslang::ElfRgba8Snorm: return spv::ImageFormatRgba8Snorm; |
| case glslang::ElfRg32f: return spv::ImageFormatRg32f; |
| case glslang::ElfRg16f: return spv::ImageFormatRg16f; |
| case glslang::ElfR11fG11fB10f: return spv::ImageFormatR11fG11fB10f; |
| case glslang::ElfR16f: return spv::ImageFormatR16f; |
| case glslang::ElfRgba16: return spv::ImageFormatRgba16; |
| case glslang::ElfRgb10A2: return spv::ImageFormatRgb10A2; |
| case glslang::ElfRg16: return spv::ImageFormatRg16; |
| case glslang::ElfRg8: return spv::ImageFormatRg8; |
| case glslang::ElfR16: return spv::ImageFormatR16; |
| case glslang::ElfR8: return spv::ImageFormatR8; |
| case glslang::ElfRgba16Snorm: return spv::ImageFormatRgba16Snorm; |
| case glslang::ElfRg16Snorm: return spv::ImageFormatRg16Snorm; |
| case glslang::ElfRg8Snorm: return spv::ImageFormatRg8Snorm; |
| case glslang::ElfR16Snorm: return spv::ImageFormatR16Snorm; |
| case glslang::ElfR8Snorm: return spv::ImageFormatR8Snorm; |
| case glslang::ElfRgba32i: return spv::ImageFormatRgba32i; |
| case glslang::ElfRgba16i: return spv::ImageFormatRgba16i; |
| case glslang::ElfRgba8i: return spv::ImageFormatRgba8i; |
| case glslang::ElfR32i: return spv::ImageFormatR32i; |
| case glslang::ElfRg32i: return spv::ImageFormatRg32i; |
| case glslang::ElfRg16i: return spv::ImageFormatRg16i; |
| case glslang::ElfRg8i: return spv::ImageFormatRg8i; |
| case glslang::ElfR16i: return spv::ImageFormatR16i; |
| case glslang::ElfR8i: return spv::ImageFormatR8i; |
| case glslang::ElfRgba32ui: return spv::ImageFormatRgba32ui; |
| case glslang::ElfRgba16ui: return spv::ImageFormatRgba16ui; |
| case glslang::ElfRgba8ui: return spv::ImageFormatRgba8ui; |
| case glslang::ElfR32ui: return spv::ImageFormatR32ui; |
| case glslang::ElfRg32ui: return spv::ImageFormatRg32ui; |
| case glslang::ElfRg16ui: return spv::ImageFormatRg16ui; |
| case glslang::ElfRgb10a2ui: return spv::ImageFormatRgb10a2ui; |
| case glslang::ElfRg8ui: return spv::ImageFormatRg8ui; |
| case glslang::ElfR16ui: return spv::ImageFormatR16ui; |
| case glslang::ElfR8ui: return spv::ImageFormatR8ui; |
| default: return (spv::ImageFormat)spv::BadValue; |
| } |
| } |
| |
| // |
| // Implement the TGlslangToSpvTraverser class. |
| // |
| |
| TGlslangToSpvTraverser::TGlslangToSpvTraverser(const glslang::TIntermediate* glslangIntermediate) |
| : TIntermTraverser(true, false, true), shaderEntry(0), sequenceDepth(0), |
| builder(GlslangMagic), |
| inMain(false), mainTerminated(false), linkageOnly(false), |
| glslangIntermediate(glslangIntermediate) |
| { |
| spv::ExecutionModel executionModel = TranslateExecutionModel(glslangIntermediate->getStage()); |
| |
| builder.clearAccessChain(); |
| builder.setSource(TranslateSourceLanguage(glslangIntermediate->getProfile()), glslangIntermediate->getVersion()); |
| stdBuiltins = builder.import("GLSL.std.450"); |
| builder.setMemoryModel(spv::AddressingModelLogical, spv::MemoryModelGLSL450); |
| shaderEntry = builder.makeMain(); |
| builder.addEntryPoint(executionModel, shaderEntry, "main"); |
| |
| // Add the source extensions |
| const auto& sourceExtensions = glslangIntermediate->getRequestedExtensions(); |
| for (auto it = sourceExtensions.begin(); it != sourceExtensions.end(); ++it) |
| builder.addSourceExtension(it->c_str()); |
| |
| // Add the top-level modes for this shader. |
| |
| if (glslangIntermediate->getXfbMode()) |
| builder.addExecutionMode(shaderEntry, spv::ExecutionModeXfb); |
| |
| unsigned int mode; |
| switch (glslangIntermediate->getStage()) { |
| case EShLangVertex: |
| builder.addCapability(spv::CapabilityShader); |
| break; |
| |
| case EShLangTessControl: |
| builder.addCapability(spv::CapabilityTessellation); |
| builder.addExecutionMode(shaderEntry, spv::ExecutionModeOutputVertices, glslangIntermediate->getVertices()); |
| break; |
| |
| case EShLangTessEvaluation: |
| builder.addCapability(spv::CapabilityTessellation); |
| switch (glslangIntermediate->getInputPrimitive()) { |
| case glslang::ElgTriangles: mode = spv::ExecutionModeInputTriangles; break; |
| case glslang::ElgQuads: mode = spv::ExecutionModeInputQuads; break; |
| case glslang::ElgIsolines: mode = spv::ExecutionModeInputIsolines; break; |
| default: mode = spv::BadValue; break; |
| } |
| if (mode != spv::BadValue) |
| builder.addExecutionMode(shaderEntry, (spv::ExecutionMode)mode); |
| |
| switch (glslangIntermediate->getVertexSpacing()) { |
| case glslang::EvsEqual: mode = spv::ExecutionModeSpacingEqual; break; |
| case glslang::EvsFractionalEven: mode = spv::ExecutionModeSpacingFractionalEven; break; |
| case glslang::EvsFractionalOdd: mode = spv::ExecutionModeSpacingFractionalOdd; break; |
| default: mode = spv::BadValue; break; |
| } |
| if (mode != spv::BadValue) |
| builder.addExecutionMode(shaderEntry, (spv::ExecutionMode)mode); |
| |
| switch (glslangIntermediate->getVertexOrder()) { |
| case glslang::EvoCw: mode = spv::ExecutionModeVertexOrderCw; break; |
| case glslang::EvoCcw: mode = spv::ExecutionModeVertexOrderCcw; break; |
| default: mode = spv::BadValue; break; |
| } |
| if (mode != spv::BadValue) |
| builder.addExecutionMode(shaderEntry, (spv::ExecutionMode)mode); |
| |
| if (glslangIntermediate->getPointMode()) |
| builder.addExecutionMode(shaderEntry, spv::ExecutionModePointMode); |
| break; |
| |
| case EShLangGeometry: |
| builder.addCapability(spv::CapabilityGeometry); |
| switch (glslangIntermediate->getInputPrimitive()) { |
| case glslang::ElgPoints: mode = spv::ExecutionModeInputPoints; break; |
| case glslang::ElgLines: mode = spv::ExecutionModeInputLines; break; |
| case glslang::ElgLinesAdjacency: mode = spv::ExecutionModeInputLinesAdjacency; break; |
| case glslang::ElgTriangles: mode = spv::ExecutionModeInputTriangles; break; |
| case glslang::ElgTrianglesAdjacency: mode = spv::ExecutionModeInputTrianglesAdjacency; break; |
| default: mode = spv::BadValue; break; |
| } |
| if (mode != spv::BadValue) |
| builder.addExecutionMode(shaderEntry, (spv::ExecutionMode)mode); |
| |
| builder.addExecutionMode(shaderEntry, spv::ExecutionModeInvocations, glslangIntermediate->getInvocations()); |
| |
| switch (glslangIntermediate->getOutputPrimitive()) { |
| case glslang::ElgPoints: mode = spv::ExecutionModeOutputPoints; break; |
| case glslang::ElgLineStrip: mode = spv::ExecutionModeOutputLineStrip; break; |
| case glslang::ElgTriangleStrip: mode = spv::ExecutionModeOutputTriangleStrip; break; |
| default: mode = spv::BadValue; break; |
| } |
| if (mode != spv::BadValue) |
| builder.addExecutionMode(shaderEntry, (spv::ExecutionMode)mode); |
| builder.addExecutionMode(shaderEntry, spv::ExecutionModeOutputVertices, glslangIntermediate->getVertices()); |
| break; |
| |
| case EShLangFragment: |
| builder.addCapability(spv::CapabilityShader); |
| if (glslangIntermediate->getPixelCenterInteger()) |
| builder.addExecutionMode(shaderEntry, spv::ExecutionModePixelCenterInteger); |
| |
| if (glslangIntermediate->getOriginUpperLeft()) |
| builder.addExecutionMode(shaderEntry, spv::ExecutionModeOriginUpperLeft); |
| else |
| builder.addExecutionMode(shaderEntry, spv::ExecutionModeOriginLowerLeft); |
| |
| if (glslangIntermediate->getEarlyFragmentTests()) |
| builder.addExecutionMode(shaderEntry, spv::ExecutionModeEarlyFragmentTests); |
| |
| switch(glslangIntermediate->getDepth()) { |
| case glslang::EldAny: mode = spv::ExecutionModeDepthAny; break; |
| case glslang::EldGreater: mode = spv::ExecutionModeDepthGreater; break; |
| case glslang::EldLess: mode = spv::ExecutionModeDepthLess; break; |
| default: mode = spv::BadValue; break; |
| } |
| if (mode != spv::BadValue) |
| builder.addExecutionMode(shaderEntry, (spv::ExecutionMode)mode); |
| |
| if (glslangIntermediate->getDepth() != glslang::EldUnchanged && glslangIntermediate->isDepthReplacing()) |
| builder.addExecutionMode(shaderEntry, spv::ExecutionModeDepthReplacing); |
| break; |
| |
| case EShLangCompute: |
| builder.addCapability(spv::CapabilityShader); |
| builder.addExecutionMode(shaderEntry, spv::ExecutionModeLocalSize, glslangIntermediate->getLocalSize(0), |
| glslangIntermediate->getLocalSize(1), |
| glslangIntermediate->getLocalSize(2)); |
| break; |
| |
| default: |
| break; |
| } |
| |
| } |
| |
| TGlslangToSpvTraverser::~TGlslangToSpvTraverser() |
| { |
| if (! mainTerminated) { |
| spv::Block* lastMainBlock = shaderEntry->getLastBlock(); |
| builder.setBuildPoint(lastMainBlock); |
| builder.leaveFunction(); |
| } |
| } |
| |
| // |
| // Implement the traversal functions. |
| // |
| // Return true from interior nodes to have the external traversal |
| // continue on to children. Return false if children were |
| // already processed. |
| // |
| |
| // |
| // Symbols can turn into |
| // - uniform/input reads |
| // - output writes |
| // - complex lvalue base setups: foo.bar[3].... , where we see foo and start up an access chain |
| // - something simple that degenerates into the last bullet |
| // |
| void TGlslangToSpvTraverser::visitSymbol(glslang::TIntermSymbol* symbol) |
| { |
| // getSymbolId() will set up all the IO decorations on the first call. |
| // Formal function parameters were mapped during makeFunctions(). |
| spv::Id id = getSymbolId(symbol); |
| |
| if (! linkageOnly) { |
| // Prepare to generate code for the access |
| |
| // L-value chains will be computed left to right. We're on the symbol now, |
| // which is the left-most part of the access chain, so now is "clear" time, |
| // followed by setting the base. |
| builder.clearAccessChain(); |
| |
| // For now, we consider all user variables as being in memory, so they are pointers, |
| // except for "const in" arguments to a function, which are an intermediate object. |
| // See comments in handleUserFunctionCall(). |
| glslang::TStorageQualifier qualifier = symbol->getQualifier().storage; |
| if (qualifier == glslang::EvqConstReadOnly && constReadOnlyParameters.find(symbol->getId()) != constReadOnlyParameters.end()) |
| builder.setAccessChainRValue(id); |
| else |
| builder.setAccessChainLValue(id); |
| } |
| } |
| |
| bool TGlslangToSpvTraverser::visitBinary(glslang::TVisit /* visit */, glslang::TIntermBinary* node) |
| { |
| // First, handle special cases |
| switch (node->getOp()) { |
| case glslang::EOpAssign: |
| case glslang::EOpAddAssign: |
| case glslang::EOpSubAssign: |
| case glslang::EOpMulAssign: |
| case glslang::EOpVectorTimesMatrixAssign: |
| case glslang::EOpVectorTimesScalarAssign: |
| case glslang::EOpMatrixTimesScalarAssign: |
| case glslang::EOpMatrixTimesMatrixAssign: |
| case glslang::EOpDivAssign: |
| case glslang::EOpModAssign: |
| case glslang::EOpAndAssign: |
| case glslang::EOpInclusiveOrAssign: |
| case glslang::EOpExclusiveOrAssign: |
| case glslang::EOpLeftShiftAssign: |
| case glslang::EOpRightShiftAssign: |
| // A bin-op assign "a += b" means the same thing as "a = a + b" |
| // where a is evaluated before b. For a simple assignment, GLSL |
| // says to evaluate the left before the right. So, always, left |
| // node then right node. |
| { |
| // get the left l-value, save it away |
| builder.clearAccessChain(); |
| node->getLeft()->traverse(this); |
| spv::Builder::AccessChain lValue = builder.getAccessChain(); |
| |
| // evaluate the right |
| builder.clearAccessChain(); |
| node->getRight()->traverse(this); |
| spv::Id rValue = builder.accessChainLoad(convertGlslangToSpvType(node->getRight()->getType())); |
| |
| if (node->getOp() != glslang::EOpAssign) { |
| // the left is also an r-value |
| builder.setAccessChain(lValue); |
| spv::Id leftRValue = builder.accessChainLoad(convertGlslangToSpvType(node->getLeft()->getType())); |
| |
| // do the operation |
| rValue = createBinaryOperation(node->getOp(), TranslatePrecisionDecoration(node->getType()), |
| convertGlslangToSpvType(node->getType()), leftRValue, rValue, |
| node->getType().getBasicType()); |
| |
| // these all need their counterparts in createBinaryOperation() |
| if (rValue == 0) |
| spv::MissingFunctionality("createBinaryOperation"); |
| } |
| |
| // store the result |
| builder.setAccessChain(lValue); |
| builder.accessChainStore(rValue); |
| |
| // assignments are expressions having an rValue after they are evaluated... |
| builder.clearAccessChain(); |
| builder.setAccessChainRValue(rValue); |
| } |
| return false; |
| case glslang::EOpIndexDirect: |
| case glslang::EOpIndexDirectStruct: |
| { |
| // Get the left part of the access chain. |
| node->getLeft()->traverse(this); |
| |
| // Add the next element in the chain |
| |
| int index = 0; |
| if (node->getRight()->getAsConstantUnion() == 0) |
| spv::MissingFunctionality("direct index without a constant node"); |
| else |
| index = node->getRight()->getAsConstantUnion()->getConstArray()[0].getIConst(); |
| |
| if (node->getLeft()->getBasicType() == glslang::EbtBlock && node->getOp() == glslang::EOpIndexDirectStruct) { |
| // This may be, e.g., an anonymous block-member selection, which generally need |
| // index remapping due to hidden members in anonymous blocks. |
| std::vector<int>& remapper = memberRemapper[node->getLeft()->getType().getStruct()]; |
| if (remapper.size() == 0) |
| spv::MissingFunctionality("block without member remapping"); |
| else |
| index = remapper[index]; |
| } |
| |
| if (! node->getLeft()->getType().isArray() && |
| node->getLeft()->getType().isVector() && |
| node->getOp() == glslang::EOpIndexDirect) { |
| // This is essentially a hard-coded vector swizzle of size 1, |
| // so short circuit the access-chain stuff with a swizzle. |
| std::vector<unsigned> swizzle; |
| swizzle.push_back(node->getRight()->getAsConstantUnion()->getConstArray()[0].getIConst()); |
| builder.accessChainPushSwizzle(swizzle, convertGlslangToSpvType(node->getLeft()->getType())); |
| } else { |
| // normal case for indexing array or structure or block |
| builder.accessChainPush(builder.makeIntConstant(index)); |
| } |
| } |
| return false; |
| case glslang::EOpIndexIndirect: |
| { |
| // Structure or array or vector indirection. |
| // Will use native SPIR-V access-chain for struct and array indirection; |
| // matrices are arrays of vectors, so will also work for a matrix. |
| // Will use the access chain's 'component' for variable index into a vector. |
| |
| // This adapter is building access chains left to right. |
| // Set up the access chain to the left. |
| node->getLeft()->traverse(this); |
| |
| // save it so that computing the right side doesn't trash it |
| spv::Builder::AccessChain partial = builder.getAccessChain(); |
| |
| // compute the next index in the chain |
| builder.clearAccessChain(); |
| node->getRight()->traverse(this); |
| spv::Id index = builder.accessChainLoad(convertGlslangToSpvType(node->getRight()->getType())); |
| |
| // restore the saved access chain |
| builder.setAccessChain(partial); |
| |
| if (! node->getLeft()->getType().isArray() && node->getLeft()->getType().isVector()) |
| builder.accessChainPushComponent(index, convertGlslangToSpvType(node->getLeft()->getType())); |
| else |
| builder.accessChainPush(index); |
| } |
| return false; |
| case glslang::EOpVectorSwizzle: |
| { |
| node->getLeft()->traverse(this); |
| glslang::TIntermSequence& swizzleSequence = node->getRight()->getAsAggregate()->getSequence(); |
| std::vector<unsigned> swizzle; |
| for (int i = 0; i < (int)swizzleSequence.size(); ++i) |
| swizzle.push_back(swizzleSequence[i]->getAsConstantUnion()->getConstArray()[0].getIConst()); |
| builder.accessChainPushSwizzle(swizzle, convertGlslangToSpvType(node->getLeft()->getType())); |
| } |
| return false; |
| case glslang::EOpLogicalOr: |
| case glslang::EOpLogicalAnd: |
| { |
| |
| // These may require short circuiting, but can sometimes be done as straight |
| // binary operations. The right operand must be short circuited if it has |
| // side effects, and should probably be if it is complex. |
| if (isTrivial(node->getRight()->getAsTyped())) |
| break; // handle below as a normal binary operation |
| // otherwise, we need to do dynamic short circuiting on the right operand |
| spv::Id result = createShortCircuit(node->getOp(), *node->getLeft()->getAsTyped(), *node->getRight()->getAsTyped()); |
| builder.clearAccessChain(); |
| builder.setAccessChainRValue(result); |
| } |
| return false; |
| default: |
| break; |
| } |
| |
| // Assume generic binary op... |
| |
| // Get the operands |
| builder.clearAccessChain(); |
| node->getLeft()->traverse(this); |
| spv::Id left = builder.accessChainLoad(convertGlslangToSpvType(node->getLeft()->getType())); |
| |
| builder.clearAccessChain(); |
| node->getRight()->traverse(this); |
| spv::Id right = builder.accessChainLoad(convertGlslangToSpvType(node->getRight()->getType())); |
| |
| spv::Id result; |
| spv::Decoration precision = TranslatePrecisionDecoration(node->getType()); |
| |
| result = createBinaryOperation(node->getOp(), precision, |
| convertGlslangToSpvType(node->getType()), left, right, |
| node->getLeft()->getType().getBasicType()); |
| |
| if (! result) { |
| spv::MissingFunctionality("glslang binary operation"); |
| } else { |
| builder.clearAccessChain(); |
| builder.setAccessChainRValue(result); |
| |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool TGlslangToSpvTraverser::visitUnary(glslang::TVisit /* visit */, glslang::TIntermUnary* node) |
| { |
| spv::Id result = spv::NoResult; |
| |
| // try texturing first |
| result = createImageTextureFunctionCall(node); |
| if (result != spv::NoResult) { |
| builder.clearAccessChain(); |
| builder.setAccessChainRValue(result); |
| |
| return false; // done with this node |
| } |
| |
| // Non-texturing. |
| |
| if (node->getOp() == glslang::EOpArrayLength) { |
| // Quite special; won't want to evaluate the operand. |
| |
| // Normal .length() would have been constant folded by the front-end. |
| // So, this has to be block.lastMember.length(). |
| // SPV wants "block" and member number as the operands, go get them. |
| assert(node->getOperand()->getType().isRuntimeSizedArray()); |
| glslang::TIntermTyped* block = node->getOperand()->getAsBinaryNode()->getLeft(); |
| block->traverse(this); |
| unsigned int member = node->getOperand()->getAsBinaryNode()->getRight()->getAsConstantUnion()->getConstArray()[0].getUConst(); |
| spv::Id length = builder.createArrayLength(builder.accessChainGetLValue(), member); |
| |
| builder.clearAccessChain(); |
| builder.setAccessChainRValue(length); |
| |
| return false; |
| } |
| |
| // Start by evaluating the operand |
| |
| builder.clearAccessChain(); |
| node->getOperand()->traverse(this); |
| |
| spv::Id operand = spv::NoResult; |
| |
| if (node->getOp() == glslang::EOpAtomicCounterIncrement || |
| node->getOp() == glslang::EOpAtomicCounterDecrement || |
| node->getOp() == glslang::EOpAtomicCounter) |
| operand = builder.accessChainGetLValue(); // Special case l-value operands |
| else |
| operand = builder.accessChainLoad(convertGlslangToSpvType(node->getOperand()->getType())); |
| |
| spv::Decoration precision = TranslatePrecisionDecoration(node->getType()); |
| |
| // it could be a conversion |
| if (! result) |
| result = createConversion(node->getOp(), precision, convertGlslangToSpvType(node->getType()), operand); |
| |
| // if not, then possibly an operation |
| if (! result) |
| result = createUnaryOperation(node->getOp(), precision, convertGlslangToSpvType(node->getType()), operand, node->getBasicType()); |
| |
| if (result) { |
| builder.clearAccessChain(); |
| builder.setAccessChainRValue(result); |
| |
| return false; // done with this node |
| } |
| |
| // it must be a special case, check... |
| switch (node->getOp()) { |
| case glslang::EOpPostIncrement: |
| case glslang::EOpPostDecrement: |
| case glslang::EOpPreIncrement: |
| case glslang::EOpPreDecrement: |
| { |
| // we need the integer value "1" or the floating point "1.0" to add/subtract |
| spv::Id one = node->getBasicType() == glslang::EbtFloat ? |
| builder.makeFloatConstant(1.0F) : |
| builder.makeIntConstant(1); |
| glslang::TOperator op; |
| if (node->getOp() == glslang::EOpPreIncrement || |
| node->getOp() == glslang::EOpPostIncrement) |
| op = glslang::EOpAdd; |
| else |
| op = glslang::EOpSub; |
| |
| spv::Id result = createBinaryOperation(op, TranslatePrecisionDecoration(node->getType()), |
| convertGlslangToSpvType(node->getType()), operand, one, |
| node->getType().getBasicType()); |
| if (result == 0) |
| spv::MissingFunctionality("createBinaryOperation for unary"); |
| |
| // The result of operation is always stored, but conditionally the |
| // consumed result. The consumed result is always an r-value. |
| builder.accessChainStore(result); |
| builder.clearAccessChain(); |
| if (node->getOp() == glslang::EOpPreIncrement || |
| node->getOp() == glslang::EOpPreDecrement) |
| builder.setAccessChainRValue(result); |
| else |
| builder.setAccessChainRValue(operand); |
| } |
| |
| return false; |
| |
| case glslang::EOpEmitStreamVertex: |
| builder.createNoResultOp(spv::OpEmitStreamVertex, operand); |
| return false; |
| case glslang::EOpEndStreamPrimitive: |
| builder.createNoResultOp(spv::OpEndStreamPrimitive, operand); |
| return false; |
| |
| default: |
| spv::MissingFunctionality("glslang unary"); |
| break; |
| } |
| |
| return true; |
| } |
| |
| bool TGlslangToSpvTraverser::visitAggregate(glslang::TVisit visit, glslang::TIntermAggregate* node) |
| { |
| spv::Id result = spv::NoResult; |
| |
| // try texturing |
| result = createImageTextureFunctionCall(node); |
| if (result != spv::NoResult) { |
| builder.clearAccessChain(); |
| builder.setAccessChainRValue(result); |
| |
| return false; |
| } else if (node->getOp() == glslang::EOpImageStore) { |
| // "imageStore" is a special case, which has no result |
| return false; |
| } |
| |
| glslang::TOperator binOp = glslang::EOpNull; |
| bool reduceComparison = true; |
| bool isMatrix = false; |
| bool noReturnValue = false; |
| bool atomic = false; |
| |
| assert(node->getOp()); |
| |
| spv::Decoration precision = TranslatePrecisionDecoration(node->getType()); |
| |
| switch (node->getOp()) { |
| case glslang::EOpSequence: |
| { |
| if (preVisit) |
| ++sequenceDepth; |
| else |
| --sequenceDepth; |
| |
| if (sequenceDepth == 1) { |
| // If this is the parent node of all the functions, we want to see them |
| // early, so all call points have actual SPIR-V functions to reference. |
| // In all cases, still let the traverser visit the children for us. |
| makeFunctions(node->getAsAggregate()->getSequence()); |
| |
| // Also, we want all globals initializers to go into the entry of main(), before |
| // anything else gets there, so visit out of order, doing them all now. |
| makeGlobalInitializers(node->getAsAggregate()->getSequence()); |
| |
| // Initializers are done, don't want to visit again, but functions link objects need to be processed, |
| // so do them manually. |
| visitFunctions(node->getAsAggregate()->getSequence()); |
| |
| return false; |
| } |
| |
| return true; |
| } |
| case glslang::EOpLinkerObjects: |
| { |
| if (visit == glslang::EvPreVisit) |
| linkageOnly = true; |
| else |
| linkageOnly = false; |
| |
| return true; |
| } |
| case glslang::EOpComma: |
| { |
| // processing from left to right naturally leaves the right-most |
| // lying around in the access chain |
| glslang::TIntermSequence& glslangOperands = node->getSequence(); |
| for (int i = 0; i < (int)glslangOperands.size(); ++i) |
| glslangOperands[i]->traverse(this); |
| |
| return false; |
| } |
| case glslang::EOpFunction: |
| if (visit == glslang::EvPreVisit) { |
| if (isShaderEntrypoint(node)) { |
| inMain = true; |
| builder.setBuildPoint(shaderEntry->getLastBlock()); |
| } else { |
| handleFunctionEntry(node); |
| } |
| } else { |
| if (inMain) |
| mainTerminated = true; |
| builder.leaveFunction(); |
| inMain = false; |
| } |
| |
| return true; |
| case glslang::EOpParameters: |
| // Parameters will have been consumed by EOpFunction processing, but not |
| // the body, so we still visited the function node's children, making this |
| // child redundant. |
| return false; |
| case glslang::EOpFunctionCall: |
| { |
| if (node->isUserDefined()) |
| result = handleUserFunctionCall(node); |
| |
| if (! result) { |
| spv::MissingFunctionality("glslang function call"); |
| glslang::TConstUnionArray emptyConsts; |
| int nextConst = 0; |
| result = createSpvConstant(node->getType(), emptyConsts, nextConst); |
| } |
| builder.clearAccessChain(); |
| builder.setAccessChainRValue(result); |
| |
| return false; |
| } |
| case glslang::EOpConstructMat2x2: |
| case glslang::EOpConstructMat2x3: |
| case glslang::EOpConstructMat2x4: |
| case glslang::EOpConstructMat3x2: |
| case glslang::EOpConstructMat3x3: |
| case glslang::EOpConstructMat3x4: |
| case glslang::EOpConstructMat4x2: |
| case glslang::EOpConstructMat4x3: |
| case glslang::EOpConstructMat4x4: |
| case glslang::EOpConstructDMat2x2: |
| case glslang::EOpConstructDMat2x3: |
| case glslang::EOpConstructDMat2x4: |
| case glslang::EOpConstructDMat3x2: |
| case glslang::EOpConstructDMat3x3: |
| case glslang::EOpConstructDMat3x4: |
| case glslang::EOpConstructDMat4x2: |
| case glslang::EOpConstructDMat4x3: |
| case glslang::EOpConstructDMat4x4: |
| isMatrix = true; |
| // fall through |
| case glslang::EOpConstructFloat: |
| case glslang::EOpConstructVec2: |
| case glslang::EOpConstructVec3: |
| case glslang::EOpConstructVec4: |
| case glslang::EOpConstructDouble: |
| case glslang::EOpConstructDVec2: |
| case glslang::EOpConstructDVec3: |
| case glslang::EOpConstructDVec4: |
| case glslang::EOpConstructBool: |
| case glslang::EOpConstructBVec2: |
| case glslang::EOpConstructBVec3: |
| case glslang::EOpConstructBVec4: |
| case glslang::EOpConstructInt: |
| case glslang::EOpConstructIVec2: |
| case glslang::EOpConstructIVec3: |
| case glslang::EOpConstructIVec4: |
| case glslang::EOpConstructUint: |
| case glslang::EOpConstructUVec2: |
| case glslang::EOpConstructUVec3: |
| case glslang::EOpConstructUVec4: |
| case glslang::EOpConstructStruct: |
| { |
| std::vector<spv::Id> arguments; |
| translateArguments(*node, arguments); |
| spv::Id resultTypeId = convertGlslangToSpvType(node->getType()); |
| spv::Id constructed; |
| if (node->getOp() == glslang::EOpConstructStruct || node->getType().isArray()) { |
| std::vector<spv::Id> constituents; |
| for (int c = 0; c < (int)arguments.size(); ++c) |
| constituents.push_back(arguments[c]); |
| constructed = builder.createCompositeConstruct(resultTypeId, constituents); |
| } else { |
| if (isMatrix) |
| constructed = builder.createMatrixConstructor(precision, arguments, resultTypeId); |
| else |
| constructed = builder.createConstructor(precision, arguments, resultTypeId); |
| } |
| |
| builder.clearAccessChain(); |
| builder.setAccessChainRValue(constructed); |
| |
| return false; |
| } |
| |
| // These six are component-wise compares with component-wise results. |
| // Forward on to createBinaryOperation(), requesting a vector result. |
| case glslang::EOpLessThan: |
| case glslang::EOpGreaterThan: |
| case glslang::EOpLessThanEqual: |
| case glslang::EOpGreaterThanEqual: |
| case glslang::EOpVectorEqual: |
| case glslang::EOpVectorNotEqual: |
| { |
| // Map the operation to a binary |
| binOp = node->getOp(); |
| reduceComparison = false; |
| switch (node->getOp()) { |
| case glslang::EOpVectorEqual: binOp = glslang::EOpVectorEqual; break; |
| case glslang::EOpVectorNotEqual: binOp = glslang::EOpVectorNotEqual; break; |
| default: binOp = node->getOp(); break; |
| } |
| |
| break; |
| } |
| case glslang::EOpMul: |
| // compontent-wise matrix multiply |
| binOp = glslang::EOpMul; |
| break; |
| case glslang::EOpOuterProduct: |
| // two vectors multiplied to make a matrix |
| binOp = glslang::EOpOuterProduct; |
| break; |
| case glslang::EOpDot: |
| { |
| // for scalar dot product, use multiply |
| glslang::TIntermSequence& glslangOperands = node->getSequence(); |
| if (! glslangOperands[0]->getAsTyped()->isVector()) |
| binOp = glslang::EOpMul; |
| break; |
| } |
| case glslang::EOpMod: |
| // when an aggregate, this is the floating-point mod built-in function, |
| // which can be emitted by the one in createBinaryOperation() |
| binOp = glslang::EOpMod; |
| break; |
| case glslang::EOpEmitVertex: |
| case glslang::EOpEndPrimitive: |
| case glslang::EOpBarrier: |
| case glslang::EOpMemoryBarrier: |
| case glslang::EOpMemoryBarrierAtomicCounter: |
| case glslang::EOpMemoryBarrierBuffer: |
| case glslang::EOpMemoryBarrierImage: |
| case glslang::EOpMemoryBarrierShared: |
| case glslang::EOpGroupMemoryBarrier: |
| noReturnValue = true; |
| // These all have 0 operands and will naturally finish up in the code below for 0 operands |
| break; |
| |
| case glslang::EOpAtomicAdd: |
| case glslang::EOpAtomicMin: |
| case glslang::EOpAtomicMax: |
| case glslang::EOpAtomicAnd: |
| case glslang::EOpAtomicOr: |
| case glslang::EOpAtomicXor: |
| case glslang::EOpAtomicExchange: |
| case glslang::EOpAtomicCompSwap: |
| atomic = true; |
| break; |
| |
| case glslang::EOpAddCarry: |
| case glslang::EOpSubBorrow: |
| case glslang::EOpUMulExtended: |
| case glslang::EOpIMulExtended: |
| case glslang::EOpBitfieldExtract: |
| case glslang::EOpBitfieldInsert: |
| spv::MissingFunctionality("integer aggregate"); |
| break; |
| |
| case glslang::EOpFma: |
| case glslang::EOpFrexp: |
| case glslang::EOpLdexp: |
| spv::MissingFunctionality("fma/frexp/ldexp aggregate"); |
| break; |
| |
| default: |
| break; |
| } |
| |
| // |
| // See if it maps to a regular operation. |
| // |
| if (binOp != glslang::EOpNull) { |
| glslang::TIntermTyped* left = node->getSequence()[0]->getAsTyped(); |
| glslang::TIntermTyped* right = node->getSequence()[1]->getAsTyped(); |
| assert(left && right); |
| |
| builder.clearAccessChain(); |
| left->traverse(this); |
| spv::Id leftId = builder.accessChainLoad(convertGlslangToSpvType(left->getType())); |
| |
| builder.clearAccessChain(); |
| right->traverse(this); |
| spv::Id rightId = builder.accessChainLoad(convertGlslangToSpvType(right->getType())); |
| |
| result = createBinaryOperation(binOp, precision, |
| convertGlslangToSpvType(node->getType()), leftId, rightId, |
| left->getType().getBasicType(), reduceComparison); |
| |
| // code above should only make binOp that exists in createBinaryOperation |
| if (result == 0) |
| spv::MissingFunctionality("createBinaryOperation for aggregate"); |
| |
| builder.clearAccessChain(); |
| builder.setAccessChainRValue(result); |
| |
| return false; |
| } |
| |
| // |
| // Create the list of operands. |
| // |
| glslang::TIntermSequence& glslangOperands = node->getSequence(); |
| std::vector<spv::Id> operands; |
| for (int arg = 0; arg < (int)glslangOperands.size(); ++arg) { |
| builder.clearAccessChain(); |
| glslangOperands[arg]->traverse(this); |
| |
| // special case l-value operands; there are just a few |
| bool lvalue = false; |
| switch (node->getOp()) { |
| //case glslang::EOpFrexp: |
| case glslang::EOpModf: |
| if (arg == 1) |
| lvalue = true; |
| break; |
| case glslang::EOpAtomicAdd: |
| case glslang::EOpAtomicMin: |
| case glslang::EOpAtomicMax: |
| case glslang::EOpAtomicAnd: |
| case glslang::EOpAtomicOr: |
| case glslang::EOpAtomicXor: |
| case glslang::EOpAtomicExchange: |
| case glslang::EOpAtomicCompSwap: |
| if (arg == 0) |
| lvalue = true; |
| break; |
| //case glslang::EOpUAddCarry: |
| //case glslang::EOpUSubBorrow: |
| //case glslang::EOpUMulExtended: |
| default: |
| break; |
| } |
| if (lvalue) |
| operands.push_back(builder.accessChainGetLValue()); |
| else |
| operands.push_back(builder.accessChainLoad(convertGlslangToSpvType(glslangOperands[arg]->getAsTyped()->getType()))); |
| } |
| |
| if (atomic) { |
| // Handle all atomics |
| result = createAtomicOperation(node->getOp(), precision, convertGlslangToSpvType(node->getType()), operands, node->getBasicType()); |
| } else { |
| // Pass through to generic operations. |
| switch (glslangOperands.size()) { |
| case 0: |
| result = createNoArgOperation(node->getOp()); |
| break; |
| case 1: |
| result = createUnaryOperation(node->getOp(), precision, convertGlslangToSpvType(node->getType()), operands.front(), node->getType().getBasicType()); |
| break; |
| default: |
| result = createMiscOperation(node->getOp(), precision, convertGlslangToSpvType(node->getType()), operands, node->getBasicType()); |
| break; |
| } |
| } |
| |
| if (noReturnValue) |
| return false; |
| |
| if (! result) { |
| spv::MissingFunctionality("glslang aggregate"); |
| return true; |
| } else { |
| builder.clearAccessChain(); |
| builder.setAccessChainRValue(result); |
| return false; |
| } |
| } |
| |
| bool TGlslangToSpvTraverser::visitSelection(glslang::TVisit /* visit */, glslang::TIntermSelection* node) |
| { |
| // This path handles both if-then-else and ?: |
| // The if-then-else has a node type of void, while |
| // ?: has a non-void node type |
| spv::Id result = 0; |
| if (node->getBasicType() != glslang::EbtVoid) { |
| // don't handle this as just on-the-fly temporaries, because there will be two names |
| // and better to leave SSA to later passes |
| result = builder.createVariable(spv::StorageClassFunction, convertGlslangToSpvType(node->getType())); |
| } |
| |
| // emit the condition before doing anything with selection |
| node->getCondition()->traverse(this); |
| |
| // make an "if" based on the value created by the condition |
| spv::Builder::If ifBuilder(builder.accessChainLoad(convertGlslangToSpvType(node->getCondition()->getType())), builder); |
| |
| if (node->getTrueBlock()) { |
| // emit the "then" statement |
| node->getTrueBlock()->traverse(this); |
| if (result) |
| builder.createStore(builder.accessChainLoad(convertGlslangToSpvType(node->getTrueBlock()->getAsTyped()->getType())), result); |
| } |
| |
| if (node->getFalseBlock()) { |
| ifBuilder.makeBeginElse(); |
| // emit the "else" statement |
| node->getFalseBlock()->traverse(this); |
| if (result) |
| builder.createStore(builder.accessChainLoad(convertGlslangToSpvType(node->getFalseBlock()->getAsTyped()->getType())), result); |
| } |
| |
| ifBuilder.makeEndIf(); |
| |
| if (result) { |
| // GLSL only has r-values as the result of a :?, but |
| // if we have an l-value, that can be more efficient if it will |
| // become the base of a complex r-value expression, because the |
| // next layer copies r-values into memory to use the access-chain mechanism |
| builder.clearAccessChain(); |
| builder.setAccessChainLValue(result); |
| } |
| |
| return false; |
| } |
| |
| bool TGlslangToSpvTraverser::visitSwitch(glslang::TVisit /* visit */, glslang::TIntermSwitch* node) |
| { |
| // emit and get the condition before doing anything with switch |
| node->getCondition()->traverse(this); |
| spv::Id selector = builder.accessChainLoad(convertGlslangToSpvType(node->getCondition()->getAsTyped()->getType())); |
| |
| // browse the children to sort out code segments |
| int defaultSegment = -1; |
| std::vector<TIntermNode*> codeSegments; |
| glslang::TIntermSequence& sequence = node->getBody()->getSequence(); |
| std::vector<int> caseValues; |
| std::vector<int> valueIndexToSegment(sequence.size()); // note: probably not all are used, it is an overestimate |
| for (glslang::TIntermSequence::iterator c = sequence.begin(); c != sequence.end(); ++c) { |
| TIntermNode* child = *c; |
| if (child->getAsBranchNode() && child->getAsBranchNode()->getFlowOp() == glslang::EOpDefault) |
| defaultSegment = (int)codeSegments.size(); |
| else if (child->getAsBranchNode() && child->getAsBranchNode()->getFlowOp() == glslang::EOpCase) { |
| valueIndexToSegment[caseValues.size()] = (int)codeSegments.size(); |
| caseValues.push_back(child->getAsBranchNode()->getExpression()->getAsConstantUnion()->getConstArray()[0].getIConst()); |
| } else |
| codeSegments.push_back(child); |
| } |
| |
| // handle the case where the last code segment is missing, due to no code |
| // statements between the last case and the end of the switch statement |
| if ((caseValues.size() && (int)codeSegments.size() == valueIndexToSegment[caseValues.size() - 1]) || |
| (int)codeSegments.size() == defaultSegment) |
| codeSegments.push_back(nullptr); |
| |
| // make the switch statement |
| std::vector<spv::Block*> segmentBlocks; // returned, as the blocks allocated in the call |
| builder.makeSwitch(selector, (int)codeSegments.size(), caseValues, valueIndexToSegment, defaultSegment, segmentBlocks); |
| |
| // emit all the code in the segments |
| breakForLoop.push(false); |
| for (unsigned int s = 0; s < codeSegments.size(); ++s) { |
| builder.nextSwitchSegment(segmentBlocks, s); |
| if (codeSegments[s]) |
| codeSegments[s]->traverse(this); |
| else |
| builder.addSwitchBreak(); |
| } |
| breakForLoop.pop(); |
| |
| builder.endSwitch(segmentBlocks); |
| |
| return false; |
| } |
| |
| void TGlslangToSpvTraverser::visitConstantUnion(glslang::TIntermConstantUnion* node) |
| { |
| int nextConst = 0; |
| spv::Id constant = createSpvConstant(node->getType(), node->getConstArray(), nextConst); |
| |
| builder.clearAccessChain(); |
| builder.setAccessChainRValue(constant); |
| } |
| |
| bool TGlslangToSpvTraverser::visitLoop(glslang::TVisit /* visit */, glslang::TIntermLoop* node) |
| { |
| // body emission needs to know what the for-loop terminal is when it sees a "continue" |
| loopTerminal.push(node->getTerminal()); |
| |
| builder.makeNewLoop(node->testFirst()); |
| |
| if (node->getTest()) { |
| node->getTest()->traverse(this); |
| // the AST only contained the test computation, not the branch, we have to add it |
| spv::Id condition = builder.accessChainLoad(convertGlslangToSpvType(node->getTest()->getType())); |
| builder.createLoopTestBranch(condition); |
| } else { |
| builder.createBranchToBody(); |
| } |
| |
| if (node->getBody()) { |
| breakForLoop.push(true); |
| node->getBody()->traverse(this); |
| breakForLoop.pop(); |
| } |
| |
| if (loopTerminal.top()) |
| loopTerminal.top()->traverse(this); |
| |
| builder.closeLoop(); |
| |
| loopTerminal.pop(); |
| |
| return false; |
| } |
| |
| bool TGlslangToSpvTraverser::visitBranch(glslang::TVisit /* visit */, glslang::TIntermBranch* node) |
| { |
| if (node->getExpression()) |
| node->getExpression()->traverse(this); |
| |
| switch (node->getFlowOp()) { |
| case glslang::EOpKill: |
| builder.makeDiscard(); |
| break; |
| case glslang::EOpBreak: |
| if (breakForLoop.top()) |
| builder.createLoopExit(); |
| else |
| builder.addSwitchBreak(); |
| break; |
| case glslang::EOpContinue: |
| if (loopTerminal.top()) |
| loopTerminal.top()->traverse(this); |
| builder.createLoopContinue(); |
| break; |
| case glslang::EOpReturn: |
| if (node->getExpression()) |
| builder.makeReturn(false, builder.accessChainLoad(convertGlslangToSpvType(node->getExpression()->getType()))); |
| else |
| builder.makeReturn(false); |
| |
| builder.clearAccessChain(); |
| break; |
| |
| default: |
| spv::MissingFunctionality("branch type"); |
| break; |
| } |
| |
| return false; |
| } |
| |
| spv::Id TGlslangToSpvTraverser::createSpvVariable(const glslang::TIntermSymbol* node) |
| { |
| // First, steer off constants, which are not SPIR-V variables, but |
| // can still have a mapping to a SPIR-V Id. |
| if (node->getQualifier().storage == glslang::EvqConst) { |
| int nextConst = 0; |
| return createSpvConstant(node->getType(), node->getConstArray(), nextConst); |
| } |
| |
| // Now, handle actual variables |
| spv::StorageClass storageClass = TranslateStorageClass(node->getType()); |
| spv::Id spvType = convertGlslangToSpvType(node->getType()); |
| |
| const char* name = node->getName().c_str(); |
| if (glslang::IsAnonymous(name)) |
| name = ""; |
| |
| return builder.createVariable(storageClass, spvType, name); |
| } |
| |
| // Return type Id of the sampled type. |
| spv::Id TGlslangToSpvTraverser::getSampledType(const glslang::TSampler& sampler) |
| { |
| switch (sampler.type) { |
| case glslang::EbtFloat: return builder.makeFloatType(32); |
| case glslang::EbtInt: return builder.makeIntType(32); |
| case glslang::EbtUint: return builder.makeUintType(32); |
| default: |
| spv::MissingFunctionality("sampled type"); |
| return builder.makeFloatType(32); |
| } |
| } |
| |
| // Convert from a glslang type to an SPV type, by calling into |
| // recursive version of this function. |
| spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& type) |
| { |
| return convertGlslangToSpvType(type, requiresExplicitLayout(type)); |
| } |
| |
| // Do full recursive conversion of an arbitrary glslang type to a SPIR-V Id. |
| // explicitLayout can be kept the same throughout the heirarchical recursive walk. |
| spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& type, bool explicitLayout) |
| { |
| spv::Id spvType = 0; |
| |
| switch (type.getBasicType()) { |
| case glslang::EbtVoid: |
| spvType = builder.makeVoidType(); |
| if (type.isArray()) |
| spv::MissingFunctionality("array of void"); |
| break; |
| case glslang::EbtFloat: |
| spvType = builder.makeFloatType(32); |
| break; |
| case glslang::EbtDouble: |
| spvType = builder.makeFloatType(64); |
| break; |
| case glslang::EbtBool: |
| spvType = builder.makeBoolType(); |
| break; |
| case glslang::EbtInt: |
| spvType = builder.makeIntType(32); |
| break; |
| case glslang::EbtUint: |
| spvType = builder.makeUintType(32); |
| break; |
| case glslang::EbtAtomicUint: |
| spv::TbdFunctionality("Is atomic_uint an opaque handle in the uniform storage class, or an addresses in the atomic storage class?"); |
| spvType = builder.makeUintType(32); |
| break; |
| case glslang::EbtSampler: |
| { |
| const glslang::TSampler& sampler = type.getSampler(); |
| spvType = builder.makeImageType(getSampledType(sampler), TranslateDimensionality(sampler), sampler.shadow, sampler.arrayed, sampler.ms, |
| sampler.image ? 2 : 1, TranslateImageFormat(type)); |
| // OpenGL "textures" need to be combined with a sampler |
| if (! sampler.image) |
| spvType = builder.makeSampledImageType(spvType); |
| } |
| break; |
| case glslang::EbtStruct: |
| case glslang::EbtBlock: |
| { |
| // If we've seen this struct type, return it |
| const glslang::TTypeList* glslangStruct = type.getStruct(); |
| std::vector<spv::Id> structFields; |
| spvType = structMap[glslangStruct]; |
| if (spvType) |
| break; |
| |
| // else, we haven't seen it... |
| |
| // Create a vector of struct types for SPIR-V to consume |
| int memberDelta = 0; // how much the member's index changes from glslang to SPIR-V, normally 0, except sometimes for blocks |
| if (type.getBasicType() == glslang::EbtBlock) |
| memberRemapper[glslangStruct].resize(glslangStruct->size()); |
| for (int i = 0; i < (int)glslangStruct->size(); i++) { |
| glslang::TType& glslangType = *(*glslangStruct)[i].type; |
| if (glslangType.hiddenMember()) { |
| ++memberDelta; |
| if (type.getBasicType() == glslang::EbtBlock) |
| memberRemapper[glslangStruct][i] = -1; |
| } else { |
| if (type.getBasicType() == glslang::EbtBlock) |
| memberRemapper[glslangStruct][i] = i - memberDelta; |
| structFields.push_back(convertGlslangToSpvType(glslangType, explicitLayout)); |
| } |
| } |
| |
| // Make the SPIR-V type |
| spvType = builder.makeStructType(structFields, type.getTypeName().c_str()); |
| structMap[glslangStruct] = spvType; |
| |
| // Name and decorate the non-hidden members |
| int offset = -1; |
| for (int i = 0; i < (int)glslangStruct->size(); i++) { |
| glslang::TType& glslangType = *(*glslangStruct)[i].type; |
| int member = i; |
| if (type.getBasicType() == glslang::EbtBlock) |
| member = memberRemapper[glslangStruct][i]; |
| // using -1 above to indicate a hidden member |
| if (member >= 0) { |
| builder.addMemberName(spvType, member, glslangType.getFieldName().c_str()); |
| addMemberDecoration(spvType, member, TranslateLayoutDecoration(glslangType)); |
| addMemberDecoration(spvType, member, TranslatePrecisionDecoration(glslangType)); |
| addMemberDecoration(spvType, member, TranslateInterpolationDecoration(glslangType)); |
| addMemberDecoration(spvType, member, TranslateInvariantDecoration(glslangType)); |
| if (glslangType.getQualifier().hasLocation()) |
| builder.addMemberDecoration(spvType, member, spv::DecorationLocation, glslangType.getQualifier().layoutLocation); |
| if (glslangType.getQualifier().hasComponent()) |
| builder.addMemberDecoration(spvType, member, spv::DecorationComponent, glslangType.getQualifier().layoutComponent); |
| if (glslangType.getQualifier().hasXfbOffset()) |
| builder.addMemberDecoration(spvType, member, spv::DecorationOffset, glslangType.getQualifier().layoutXfbOffset); |
| else if (explicitLayout) { |
| // figure out what to do with offset, which is accumulating |
| int nextOffset; |
| updateMemberOffset(type, glslangType, offset, nextOffset); |
| if (offset >= 0) |
| builder.addMemberDecoration(spvType, member, spv::DecorationOffset, offset); |
| offset = nextOffset; |
| } |
| |
| if (glslangType.isMatrix() && explicitLayout) { |
| builder.addMemberDecoration(spvType, member, spv::DecorationMatrixStride, getMatrixStride(glslangType)); |
| } |
| |
| // built-in variable decorations |
| spv::BuiltIn builtIn = TranslateBuiltInDecoration(glslangType.getQualifier().builtIn); |
| if (builtIn != spv::BadValue) |
| builder.addMemberDecoration(spvType, member, spv::DecorationBuiltIn, (int)builtIn); |
| } |
| } |
| |
| // Decorate the structure |
| addDecoration(spvType, TranslateLayoutDecoration(type)); |
| addDecoration(spvType, TranslateBlockDecoration(type)); |
| if (type.getQualifier().hasStream()) |
| builder.addDecoration(spvType, spv::DecorationStream, type.getQualifier().layoutStream); |
| if (glslangIntermediate->getXfbMode()) { |
| if (type.getQualifier().hasXfbStride()) |
| builder.addDecoration(spvType, spv::DecorationXfbStride, type.getQualifier().layoutXfbStride); |
| if (type.getQualifier().hasXfbBuffer()) |
| builder.addDecoration(spvType, spv::DecorationXfbBuffer, type.getQualifier().layoutXfbBuffer); |
| } |
| } |
| break; |
| default: |
| spv::MissingFunctionality("basic type"); |
| break; |
| } |
| |
| if (type.isMatrix()) |
| spvType = builder.makeMatrixType(spvType, type.getMatrixCols(), type.getMatrixRows()); |
| else { |
| // If this variable has a vector element count greater than 1, create a SPIR-V vector |
| if (type.getVectorSize() > 1) |
| spvType = builder.makeVectorType(spvType, type.getVectorSize()); |
| } |
| |
| if (type.isArray()) { |
| // Do all but the outer dimension |
| for (int dim = type.getArraySizes()->getNumDims() - 1; dim > 0; --dim) { |
| assert(type.getArraySizes()->getDimSize(dim) > 0); |
| spvType = builder.makeArrayType(spvType, type.getArraySizes()->getDimSize(dim)); |
| } |
| |
| // Do the outer dimension, which might not be known for a runtime-sized array |
| if (type.isRuntimeSizedArray()) { |
| spvType = builder.makeRuntimeArray(spvType); |
| } else { |
| assert(type.getOuterArraySize() > 0); |
| spvType = builder.makeArrayType(spvType, type.getOuterArraySize()); |
| } |
| |
| // TODO: layout still needs to be done hierarchically for arrays of arrays, which |
| // may still require additional "link time" support from the front-end |
| // for arrays of arrays |
| if (explicitLayout) |
| builder.addDecoration(spvType, spv::DecorationArrayStride, getArrayStride(type)); |
| } |
| |
| return spvType; |
| } |
| |
| bool TGlslangToSpvTraverser::requiresExplicitLayout(const glslang::TType& type) const |
| { |
| return type.getBasicType() == glslang::EbtBlock && |
| type.getQualifier().layoutPacking != glslang::ElpShared && |
| type.getQualifier().layoutPacking != glslang::ElpPacked && |
| (type.getQualifier().storage == glslang::EvqUniform || |
| type.getQualifier().storage == glslang::EvqBuffer); |
| } |
| |
| // Given an array type, returns the integer stride required for that array |
| int TGlslangToSpvTraverser::getArrayStride(const glslang::TType& arrayType) |
| { |
| glslang::TType derefType(arrayType, 0); |
| int size; |
| glslangIntermediate->getBaseAlignment(derefType, size, true); |
| return size; |
| } |
| |
| // Given a matrix type, returns the integer stride required for that matrix |
| // when used as a member of an interface block |
| int TGlslangToSpvTraverser::getMatrixStride(const glslang::TType& matrixType) |
| { |
| int size; |
| return glslangIntermediate->getBaseAlignment(matrixType, size, true); |
| } |
| |
| // Given a member type of a struct, realign the current offset for it, and compute |
| // the next (not yet aligned) offset for the next member, which will get aligned |
| // on the next call. |
| // 'currentOffset' should be passed in already initialized, ready to modify, and reflecting |
| // the migration of data from nextOffset -> currentOffset. It should be -1 on the first call. |
| // -1 means a non-forced member offset (no decoration needed). |
| void TGlslangToSpvTraverser::updateMemberOffset(const glslang::TType& structType, const glslang::TType& memberType, int& currentOffset, int& nextOffset) |
| { |
| // this will get a positive value when deemed necessary |
| nextOffset = -1; |
| |
| bool forceOffset = structType.getQualifier().layoutPacking == glslang::ElpStd140 || |
| structType.getQualifier().layoutPacking == glslang::ElpStd430; |
| |
| // override anything in currentOffset with user-set offset |
| if (memberType.getQualifier().hasOffset()) |
| currentOffset = memberType.getQualifier().layoutOffset; |
| |
| // It could be that current linker usage in glslang updated all the layoutOffset, |
| // in which case the following code does not matter. But, that's not quite right |
| // once cross-compilation unit GLSL validation is done, as the original user |
| // settings are needed in layoutOffset, and then the following will come into play. |
| |
| if (! forceOffset) { |
| if (! memberType.getQualifier().hasOffset()) |
| currentOffset = -1; |
| |
| return; |
| } |
| |
| // Getting this far means we are forcing offsets |
| if (currentOffset < 0) |
| currentOffset = 0; |
| |
| // Now, currentOffset is valid (either 0, or from a previous nextOffset), |
| // but possibly not yet correctly aligned. |
| |
| int memberSize; |
| int memberAlignment = glslangIntermediate->getBaseAlignment(memberType, memberSize, memberType.getQualifier().layoutPacking == glslang::ElpStd140); |
| glslang::RoundToPow2(currentOffset, memberAlignment); |
| nextOffset = currentOffset + memberSize; |
| } |
| |
| bool TGlslangToSpvTraverser::isShaderEntrypoint(const glslang::TIntermAggregate* node) |
| { |
| return node->getName() == "main("; |
| } |
| |
| // Make all the functions, skeletally, without actually visiting their bodies. |
| void TGlslangToSpvTraverser::makeFunctions(const glslang::TIntermSequence& glslFunctions) |
| { |
| for (int f = 0; f < (int)glslFunctions.size(); ++f) { |
| glslang::TIntermAggregate* glslFunction = glslFunctions[f]->getAsAggregate(); |
| if (! glslFunction || glslFunction->getOp() != glslang::EOpFunction || isShaderEntrypoint(glslFunction)) |
| continue; |
| |
| // We're on a user function. Set up the basic interface for the function now, |
| // so that it's available to call. |
| // Translating the body will happen later. |
| // |
| // Typically (except for a "const in" parameter), an address will be passed to the |
| // function. What it is an address of varies: |
| // |
| // - "in" parameters not marked as "const" can be written to without modifying the argument, |
| // so that write needs to be to a copy, hence the address of a copy works. |
| // |
| // - "const in" parameters can just be the r-value, as no writes need occur. |
| // |
| // - "out" and "inout" arguments can't be done as direct pointers, because GLSL has |
| // copy-in/copy-out semantics. They can be handled though with a pointer to a copy. |
| |
| std::vector<spv::Id> paramTypes; |
| glslang::TIntermSequence& parameters = glslFunction->getSequence()[0]->getAsAggregate()->getSequence(); |
| |
| for (int p = 0; p < (int)parameters.size(); ++p) { |
| const glslang::TType& paramType = parameters[p]->getAsTyped()->getType(); |
| spv::Id typeId = convertGlslangToSpvType(paramType); |
| if (paramType.getQualifier().storage != glslang::EvqConstReadOnly) |
| typeId = builder.makePointer(spv::StorageClassFunction, typeId); |
| else |
| constReadOnlyParameters.insert(parameters[p]->getAsSymbolNode()->getId()); |
| paramTypes.push_back(typeId); |
| } |
| |
| spv::Block* functionBlock; |
| spv::Function *function = builder.makeFunctionEntry(convertGlslangToSpvType(glslFunction->getType()), glslFunction->getName().c_str(), |
| paramTypes, &functionBlock); |
| |
| // Track function to emit/call later |
| functionMap[glslFunction->getName().c_str()] = function; |
| |
| // Set the parameter id's |
| for (int p = 0; p < (int)parameters.size(); ++p) { |
| symbolValues[parameters[p]->getAsSymbolNode()->getId()] = function->getParamId(p); |
| // give a name too |
| builder.addName(function->getParamId(p), parameters[p]->getAsSymbolNode()->getName().c_str()); |
| } |
| } |
| } |
| |
| // Process all the initializers, while skipping the functions and link objects |
| void TGlslangToSpvTraverser::makeGlobalInitializers(const glslang::TIntermSequence& initializers) |
| { |
| builder.setBuildPoint(shaderEntry->getLastBlock()); |
| for (int i = 0; i < (int)initializers.size(); ++i) { |
| glslang::TIntermAggregate* initializer = initializers[i]->getAsAggregate(); |
| if (initializer && initializer->getOp() != glslang::EOpFunction && initializer->getOp() != glslang::EOpLinkerObjects) { |
| |
| // We're on a top-level node that's not a function. Treat as an initializer, whose |
| // code goes into the beginning of main. |
| initializer->traverse(this); |
| } |
| } |
| } |
| |
| // Process all the functions, while skipping initializers. |
| void TGlslangToSpvTraverser::visitFunctions(const glslang::TIntermSequence& glslFunctions) |
| { |
| for (int f = 0; f < (int)glslFunctions.size(); ++f) { |
| glslang::TIntermAggregate* node = glslFunctions[f]->getAsAggregate(); |
| if (node && (node->getOp() == glslang::EOpFunction || node->getOp() == glslang ::EOpLinkerObjects)) |
| node->traverse(this); |
| } |
| } |
| |
| void TGlslangToSpvTraverser::handleFunctionEntry(const glslang::TIntermAggregate* node) |
| { |
| // SPIR-V functions should already be in the functionMap from the prepass |
| // that called makeFunctions(). |
| spv::Function* function = functionMap[node->getName().c_str()]; |
| spv::Block* functionBlock = function->getEntryBlock(); |
| builder.setBuildPoint(functionBlock); |
| } |
| |
| void TGlslangToSpvTraverser::translateArguments(const glslang::TIntermAggregate& node, std::vector<spv::Id>& arguments) |
| { |
| const glslang::TIntermSequence& glslangArguments = node.getSequence(); |
| for (int i = 0; i < (int)glslangArguments.size(); ++i) { |
| builder.clearAccessChain(); |
| glslangArguments[i]->traverse(this); |
| |
| // Special case l-value operands |
| bool lvalue = false; |
| switch (node.getOp()) { |
| case glslang::EOpImageAtomicAdd: |
| case glslang::EOpImageAtomicMin: |
| case glslang::EOpImageAtomicMax: |
| case glslang::EOpImageAtomicAnd: |
| case glslang::EOpImageAtomicOr: |
| case glslang::EOpImageAtomicXor: |
| case glslang::EOpImageAtomicExchange: |
| case glslang::EOpImageAtomicCompSwap: |
| if (i == 0) |
| lvalue = true; |
| break; |
| default: |
| break; |
| } |
| |
| if (lvalue) |
| arguments.push_back(builder.accessChainGetLValue()); |
| else |
| arguments.push_back(builder.accessChainLoad(convertGlslangToSpvType(glslangArguments[i]->getAsTyped()->getType()))); |
| } |
| } |
| |
| void TGlslangToSpvTraverser::translateArguments(glslang::TIntermUnary& node, std::vector<spv::Id>& arguments) |
| { |
| builder.clearAccessChain(); |
| node.getOperand()->traverse(this); |
| arguments.push_back(builder.accessChainLoad(convertGlslangToSpvType(node.getOperand()->getType()))); |
| } |
| |
| spv::Id TGlslangToSpvTraverser::createImageTextureFunctionCall(glslang::TIntermOperator* node) |
| { |
| if (! node->isImage() && ! node->isTexture()) { |
| return spv::NoResult; |
| } |
| |
| // Process a GLSL texturing op (will be SPV image) |
| const glslang::TSampler sampler = node->getAsAggregate() ? node->getAsAggregate()->getSequence()[0]->getAsTyped()->getType().getSampler() |
| : node->getAsUnaryNode()->getOperand()->getAsTyped()->getType().getSampler(); |
| std::vector<spv::Id> arguments; |
| if (node->getAsAggregate()) |
| translateArguments(*node->getAsAggregate(), arguments); |
| else |
| translateArguments(*node->getAsUnaryNode(), arguments); |
| spv::Decoration precision = TranslatePrecisionDecoration(node->getType()); |
| |
| spv::Builder::TextureParameters params = { }; |
| params.sampler = arguments[0]; |
| |
| glslang::TCrackedTextureOp cracked; |
| node->crackTexture(sampler, cracked); |
| |
| // Check for queries |
| if (cracked.query) { |
| switch (node->getOp()) { |
| case glslang::EOpImageQuerySize: |
| case glslang::EOpTextureQuerySize: |
| if (arguments.size() > 1) { |
| params.lod = arguments[1]; |
| return builder.createTextureQueryCall(spv::OpImageQuerySizeLod, params); |
| } else |
| return builder.createTextureQueryCall(spv::OpImageQuerySize, params); |
| case glslang::EOpImageQuerySamples: |
| case glslang::EOpTextureQuerySamples: |
| return builder.createTextureQueryCall(spv::OpImageQuerySamples, params); |
| case glslang::EOpTextureQueryLod: |
| params.coords = arguments[1]; |
| return builder.createTextureQueryCall(spv::OpImageQueryLod, params); |
| case glslang::EOpTextureQueryLevels: |
| return builder.createTextureQueryCall(spv::OpImageQueryLevels, params); |
| default: |
| assert(0); |
| break; |
| } |
| } |
| |
| // Check for image functions other than queries |
| if (node->isImage()) { |
| std::vector<spv::Id> operands; |
| auto opIt = arguments.begin(); |
| operands.push_back(*(opIt++)); |
| operands.push_back(*(opIt++)); |
| if (node->getOp() == glslang::EOpImageStore) |
| operands.push_back(*(opIt++)); |
| // TODO: add 'sample' operand |
| if (node->getOp() == glslang::EOpImageLoad) { |
| return builder.createOp(spv::OpImageRead, convertGlslangToSpvType(node->getType()), operands); |
| } else if (node->getOp() == glslang::EOpImageStore) { |
| builder.createNoResultOp(spv::OpImageWrite, operands); |
| return spv::NoResult; |
| } else { |
| // Process image atomic operations |
| |
| // GLSL "IMAGE_PARAMS" will involve in constructing an image texel pointer and this pointer, |
| // as the first source operand, is required by SPIR-V atomic operations. |
| operands.push_back(sampler.ms ? *(opIt++) : 0); // For non-MS, the value should be 0 |
| |
| spv::Id resultTypeId = builder.makePointer(spv::StorageClassImage, convertGlslangToSpvType(node->getType())); |
| spv::Id pointer = builder.createOp(spv::OpImageTexelPointer, resultTypeId, operands); |
| |
| std::vector<spv::Id> operands; |
| operands.push_back(pointer); |
| for (; opIt != arguments.end(); ++opIt) |
| operands.push_back(*opIt); |
| |
| return createAtomicOperation(node->getOp(), precision, convertGlslangToSpvType(node->getType()), operands, node->getBasicType()); |
| } |
| } |
| |
| // Check for texture functions other than queries |
| if (cracked.gather) |
| spv::MissingFunctionality("texture gather"); |
| |
| // check for bias argument |
| bool bias = false; |
| if (! cracked.lod && ! cracked.gather && ! cracked.grad && ! cracked.fetch) { |
| int nonBiasArgCount = 2; |
| if (cracked.offset) |
| ++nonBiasArgCount; |
| if (cracked.grad) |
| nonBiasArgCount += 2; |
| |
| if ((int)arguments.size() > nonBiasArgCount) |
| bias = true; |
| } |
| |
| bool cubeCompare = sampler.dim == glslang::EsdCube && sampler.arrayed && sampler.shadow; |
| |
| // set the rest of the arguments |
| params.coords = arguments[1]; |
| int extraArgs = 0; |
| if (cubeCompare) |
| params.Dref = arguments[2]; |
| else if (sampler.shadow) { |
| std::vector<spv::Id> indexes; |
| int comp; |
| if (cracked.proj) |
| comp = 3; |
| else |
| comp = builder.getNumComponents(params.coords) - 1; |
| indexes.push_back(comp); |
| params.Dref = builder.createCompositeExtract(params.coords, builder.getScalarTypeId(builder.getTypeId(params.coords)), indexes); |
| } |
| if (cracked.lod) { |
| params.lod = arguments[2]; |
| ++extraArgs; |
| } else if (sampler.ms) { |
| params.sample = arguments[2]; // For MS, "sample" should be specified |
| ++extraArgs; |
| } |
| if (cracked.grad) { |
| params.gradX = arguments[2 + extraArgs]; |
| params.gradY = arguments[3 + extraArgs]; |
| extraArgs += 2; |
| } |
| //if (gather && compare) { |
| // params.compare = arguments[2 + extraArgs]; |
| // ++extraArgs; |
| //} |
| if (cracked.offset || cracked.offsets) { |
| params.offset = arguments[2 + extraArgs]; |
| ++extraArgs; |
| } |
| if (bias) { |
| params.bias = arguments[2 + extraArgs]; |
| ++extraArgs; |
| } |
| |
| return builder.createTextureCall(precision, convertGlslangToSpvType(node->getType()), cracked.fetch, cracked.proj, params); |
| } |
| |
| spv::Id TGlslangToSpvTraverser::handleUserFunctionCall(const glslang::TIntermAggregate* node) |
| { |
| // Grab the function's pointer from the previously created function |
| spv::Function* function = functionMap[node->getName().c_str()]; |
| if (! function) |
| return 0; |
| |
| const glslang::TIntermSequence& glslangArgs = node->getSequence(); |
| const glslang::TQualifierList& qualifiers = node->getQualifierList(); |
| |
| // See comments in makeFunctions() for details about the semantics for parameter passing. |
| // |
| // These imply we need a four step process: |
| // 1. Evaluate the arguments |
| // 2. Allocate and make copies of in, out, and inout arguments |
| // 3. Make the call |
| // 4. Copy back the results |
| |
| // 1. Evaluate the arguments |
| std::vector<spv::Builder::AccessChain> lValues; |
| std::vector<spv::Id> rValues; |
| std::vector<spv::Id> argTypes; |
| for (int a = 0; a < (int)glslangArgs.size(); ++a) { |
| // build l-value |
| builder.clearAccessChain(); |
| glslangArgs[a]->traverse(this); |
| argTypes.push_back(convertGlslangToSpvType(glslangArgs[a]->getAsTyped()->getType())); |
| // keep outputs as l-values, evaluate input-only as r-values |
| if (qualifiers[a] != glslang::EvqConstReadOnly) { |
| // save l-value |
| lValues.push_back(builder.getAccessChain()); |
| } else { |
| // process r-value |
| rValues.push_back(builder.accessChainLoad(argTypes.back())); |
| } |
| } |
| |
| // 2. Allocate space for anything needing a copy, and if it's "in" or "inout" |
| // copy the original into that space. |
| // |
| // Also, build up the list of actual arguments to pass in for the call |
| int lValueCount = 0; |
| int rValueCount = 0; |
| std::vector<spv::Id> spvArgs; |
| for (int a = 0; a < (int)glslangArgs.size(); ++a) { |
| spv::Id arg; |
| if (qualifiers[a] != glslang::EvqConstReadOnly) { |
| // need space to hold the copy |
| const glslang::TType& paramType = glslangArgs[a]->getAsTyped()->getType(); |
| arg = builder.createVariable(spv::StorageClassFunction, convertGlslangToSpvType(paramType), "param"); |
| if (qualifiers[a] == glslang::EvqIn || qualifiers[a] == glslang::EvqInOut) { |
| // need to copy the input into output space |
| builder.setAccessChain(lValues[lValueCount]); |
| spv::Id copy = builder.accessChainLoad(argTypes[a]); |
| builder.createStore(copy, arg); |
| } |
| ++lValueCount; |
| } else { |
| arg = rValues[rValueCount]; |
| ++rValueCount; |
| } |
| spvArgs.push_back(arg); |
| } |
| |
| // 3. Make the call. |
| spv::Id result = builder.createFunctionCall(function, spvArgs); |
| |
| // 4. Copy back out an "out" arguments. |
| lValueCount = 0; |
| for (int a = 0; a < (int)glslangArgs.size(); ++a) { |
| if (qualifiers[a] != glslang::EvqConstReadOnly) { |
| if (qualifiers[a] == glslang::EvqOut || qualifiers[a] == glslang::EvqInOut) { |
| spv::Id copy = builder.createLoad(spvArgs[a]); |
| builder.setAccessChain(lValues[lValueCount]); |
| builder.accessChainStore(copy); |
| } |
| ++lValueCount; |
| } |
| } |
| |
| return result; |
| } |
| |
| // Translate AST operation to SPV operation, already having SPV-based operands/types. |
| spv::Id TGlslangToSpvTraverser::createBinaryOperation(glslang::TOperator op, spv::Decoration precision, |
| spv::Id typeId, spv::Id left, spv::Id right, |
| glslang::TBasicType typeProxy, bool reduceComparison) |
| { |
| bool isUnsigned = typeProxy == glslang::EbtUint; |
| bool isFloat = typeProxy == glslang::EbtFloat || typeProxy == glslang::EbtDouble; |
| |
| spv::Op binOp = spv::OpNop; |
| bool needMatchingVectors = true; // for non-matrix ops, would a scalar need to smear to match a vector? |
| bool comparison = false; |
| |
| switch (op) { |
| case glslang::EOpAdd: |
| case glslang::EOpAddAssign: |
| if (isFloat) |
| binOp = spv::OpFAdd; |
| else |
| binOp = spv::OpIAdd; |
| break; |
| case glslang::EOpSub: |
| case glslang::EOpSubAssign: |
| if (isFloat) |
| binOp = spv::OpFSub; |
| else |
| binOp = spv::OpISub; |
| break; |
| case glslang::EOpMul: |
| case glslang::EOpMulAssign: |
| if (isFloat) |
| binOp = spv::OpFMul; |
| else |
| binOp = spv::OpIMul; |
| break; |
| case glslang::EOpVectorTimesScalar: |
| case glslang::EOpVectorTimesScalarAssign: |
| if (isFloat) { |
| if (builder.isVector(right)) |
| std::swap(left, right); |
| assert(builder.isScalar(right)); |
| needMatchingVectors = false; |
| binOp = spv::OpVectorTimesScalar; |
| } else |
| binOp = spv::OpIMul; |
| break; |
| case glslang::EOpVectorTimesMatrix: |
| case glslang::EOpVectorTimesMatrixAssign: |
| assert(builder.isVector(left)); |
| assert(builder.isMatrix(right)); |
| binOp = spv::OpVectorTimesMatrix; |
| break; |
| case glslang::EOpMatrixTimesVector: |
| assert(builder.isMatrix(left)); |
| assert(builder.isVector(right)); |
| binOp = spv::OpMatrixTimesVector; |
| break; |
| case glslang::EOpMatrixTimesScalar: |
| case glslang::EOpMatrixTimesScalarAssign: |
| if (builder.isMatrix(right)) |
| std::swap(left, right); |
| assert(builder.isScalar(right)); |
| binOp = spv::OpMatrixTimesScalar; |
| break; |
| case glslang::EOpMatrixTimesMatrix: |
| case glslang::EOpMatrixTimesMatrixAssign: |
| assert(builder.isMatrix(left)); |
| assert(builder.isMatrix(right)); |
| binOp = spv::OpMatrixTimesMatrix; |
| break; |
| case glslang::EOpOuterProduct: |
| binOp = spv::OpOuterProduct; |
| needMatchingVectors = false; |
| break; |
| |
| case glslang::EOpDiv: |
| case glslang::EOpDivAssign: |
| if (isFloat) |
| binOp = spv::OpFDiv; |
| else if (isUnsigned) |
| binOp = spv::OpUDiv; |
| else |
| binOp = spv::OpSDiv; |
| break; |
| case glslang::EOpMod: |
| case glslang::EOpModAssign: |
| if (isFloat) |
| binOp = spv::OpFMod; |
| else if (isUnsigned) |
| binOp = spv::OpUMod; |
| else |
| binOp = spv::OpSMod; |
| break; |
| case glslang::EOpRightShift: |
| case glslang::EOpRightShiftAssign: |
| if (isUnsigned) |
| binOp = spv::OpShiftRightLogical; |
| else |
| binOp = spv::OpShiftRightArithmetic; |
| break; |
| case glslang::EOpLeftShift: |
| case glslang::EOpLeftShiftAssign: |
| binOp = spv::OpShiftLeftLogical; |
| break; |
| case glslang::EOpAnd: |
| case glslang::EOpAndAssign: |
| binOp = spv::OpBitwiseAnd; |
| break; |
| case glslang::EOpLogicalAnd: |
| needMatchingVectors = false; |
| binOp = spv::OpLogicalAnd; |
| break; |
| case glslang::EOpInclusiveOr: |
| case glslang::EOpInclusiveOrAssign: |
| binOp = spv::OpBitwiseOr; |
| break; |
| case glslang::EOpLogicalOr: |
| needMatchingVectors = false; |
| binOp = spv::OpLogicalOr; |
| break; |
| case glslang::EOpExclusiveOr: |
| case glslang::EOpExclusiveOrAssign: |
| binOp = spv::OpBitwiseXor; |
| break; |
| case glslang::EOpLogicalXor: |
| needMatchingVectors = false; |
| binOp = spv::OpLogicalNotEqual; |
| break; |
| |
| case glslang::EOpLessThan: |
| case glslang::EOpGreaterThan: |
| case glslang::EOpLessThanEqual: |
| case glslang::EOpGreaterThanEqual: |
| case glslang::EOpEqual: |
| case glslang::EOpNotEqual: |
| case glslang::EOpVectorEqual: |
| case glslang::EOpVectorNotEqual: |
| comparison = true; |
| break; |
| default: |
| break; |
| } |
| |
| // handle mapped binary operations (should be non-comparison) |
| if (binOp != spv::OpNop) { |
| assert(comparison == false); |
| if (builder.isMatrix(left) || builder.isMatrix(right)) { |
| switch (binOp) { |
| case spv::OpMatrixTimesScalar: |
| case spv::OpVectorTimesMatrix: |
| case spv::OpMatrixTimesVector: |
| case spv::OpMatrixTimesMatrix: |
| break; |
| case spv::OpFDiv: |
| // turn it into a multiply... |
| assert(builder.isMatrix(left) && builder.isScalar(right)); |
| right = builder.createBinOp(spv::OpFDiv, builder.getTypeId(right), builder.makeFloatConstant(1.0F), right); |
| binOp = spv::OpFMul; |
| break; |
| default: |
| spv::MissingFunctionality("binary operation on matrix"); |
| break; |
| } |
| |
| spv::Id id = builder.createBinOp(binOp, typeId, left, right); |
| builder.setPrecision(id, precision); |
| |
| return id; |
| } |
| |
| // No matrix involved; make both operands be the same number of components, if needed |
| if (needMatchingVectors) |
| builder.promoteScalar(precision, left, right); |
| |
| spv::Id id = builder.createBinOp(binOp, typeId, left, right); |
| builder.setPrecision(id, precision); |
| |
| return id; |
| } |
| |
| if (! comparison) |
| return 0; |
| |
| // Handle comparison instructions |
| |
| if (reduceComparison && (builder.isVector(left) || builder.isMatrix(left) || builder.isAggregate(left))) { |
| assert(op == glslang::EOpEqual || op == glslang::EOpNotEqual); |
| |
| return builder.createCompare(precision, left, right, op == glslang::EOpEqual); |
| } |
| |
| switch (op) { |
| case glslang::EOpLessThan: |
| if (isFloat) |
| binOp = spv::OpFOrdLessThan; |
| else if (isUnsigned) |
| binOp = spv::OpULessThan; |
| else |
| binOp = spv::OpSLessThan; |
| break; |
| case glslang::EOpGreaterThan: |
| if (isFloat) |
| binOp = spv::OpFOrdGreaterThan; |
| else if (isUnsigned) |
| binOp = spv::OpUGreaterThan; |
| else |
| binOp = spv::OpSGreaterThan; |
| break; |
| case glslang::EOpLessThanEqual: |
| if (isFloat) |
| binOp = spv::OpFOrdLessThanEqual; |
| else if (isUnsigned) |
| binOp = spv::OpULessThanEqual; |
| else |
| binOp = spv::OpSLessThanEqual; |
| break; |
| case glslang::EOpGreaterThanEqual: |
| if (isFloat) |
| binOp = spv::OpFOrdGreaterThanEqual; |
| else if (isUnsigned) |
| binOp = spv::OpUGreaterThanEqual; |
| else |
| binOp = spv::OpSGreaterThanEqual; |
| break; |
| case glslang::EOpEqual: |
| case glslang::EOpVectorEqual: |
| if (isFloat) |
| binOp = spv::OpFOrdEqual; |
| else |
| binOp = spv::OpIEqual; |
| break; |
| case glslang::EOpNotEqual: |
| case glslang::EOpVectorNotEqual: |
| if (isFloat) |
| binOp = spv::OpFOrdNotEqual; |
| else |
| binOp = spv::OpINotEqual; |
| break; |
| default: |
| break; |
| } |
| |
| if (binOp != spv::OpNop) { |
| spv::Id id = builder.createBinOp(binOp, typeId, left, right); |
| builder.setPrecision(id, precision); |
| |
| return id; |
| } |
| |
| return 0; |
| } |
| |
| spv::Id TGlslangToSpvTraverser::createUnaryOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId, spv::Id operand, glslang::TBasicType typeProxy) |
| { |
| spv::Op unaryOp = spv::OpNop; |
| int libCall = -1; |
| bool isFloat = typeProxy == glslang::EbtFloat || typeProxy == glslang::EbtDouble; |
| |
| switch (op) { |
| case glslang::EOpNegative: |
| if (isFloat) |
| unaryOp = spv::OpFNegate; |
| else |
| unaryOp = spv::OpSNegate; |
| break; |
| |
| case glslang::EOpLogicalNot: |
| case glslang::EOpVectorLogicalNot: |
| unaryOp = spv::OpLogicalNot; |
| break; |
| case glslang::EOpBitwiseNot: |
| unaryOp = spv::OpNot; |
| break; |
| |
| case glslang::EOpDeterminant: |
| libCall = spv::GLSLstd450Determinant; |
| break; |
| case glslang::EOpMatrixInverse: |
| libCall = spv::GLSLstd450MatrixInverse; |
| break; |
| case glslang::EOpTranspose: |
| unaryOp = spv::OpTranspose; |
| break; |
| |
| case glslang::EOpRadians: |
| libCall = spv::GLSLstd450Radians; |
| break; |
| case glslang::EOpDegrees: |
| libCall = spv::GLSLstd450Degrees; |
| break; |
| case glslang::EOpSin: |
| libCall = spv::GLSLstd450Sin; |
| break; |
| case glslang::EOpCos: |
| libCall = spv::GLSLstd450Cos; |
| break; |
| case glslang::EOpTan: |
| libCall = spv::GLSLstd450Tan; |
| break; |
| case glslang::EOpAcos: |
| libCall = spv::GLSLstd450Acos; |
| break; |
| case glslang::EOpAsin: |
| libCall = spv::GLSLstd450Asin; |
| break; |
| case glslang::EOpAtan: |
| libCall = spv::GLSLstd450Atan; |
| break; |
| |
| case glslang::EOpAcosh: |
| libCall = spv::GLSLstd450Acosh; |
| break; |
| case glslang::EOpAsinh: |
| libCall = spv::GLSLstd450Asinh; |
| break; |
| case glslang::EOpAtanh: |
| libCall = spv::GLSLstd450Atanh; |
| break; |
| case glslang::EOpTanh: |
| libCall = spv::GLSLstd450Tanh; |
| break; |
| case glslang::EOpCosh: |
| libCall = spv::GLSLstd450Cosh; |
| break; |
| case glslang::EOpSinh: |
| libCall = spv::GLSLstd450Sinh; |
| break; |
| |
| case glslang::EOpLength: |
| libCall = spv::GLSLstd450Length; |
| break; |
| case glslang::EOpNormalize: |
| libCall = spv::GLSLstd450Normalize; |
| break; |
| |
| case glslang::EOpExp: |
| libCall = spv::GLSLstd450Exp; |
| break; |
| case glslang::EOpLog: |
| libCall = spv::GLSLstd450Log; |
| break; |
| case glslang::EOpExp2: |
| libCall = spv::GLSLstd450Exp2; |
| break; |
| case glslang::EOpLog2: |
| libCall = spv::GLSLstd450Log2; |
| break; |
| case glslang::EOpSqrt: |
| libCall = spv::GLSLstd450Sqrt; |
| break; |
| case glslang::EOpInverseSqrt: |
| libCall = spv::GLSLstd450InverseSqrt; |
| break; |
| |
| case glslang::EOpFloor: |
| libCall = spv::GLSLstd450Floor; |
| break; |
| case glslang::EOpTrunc: |
| libCall = spv::GLSLstd450Trunc; |
| break; |
| case glslang::EOpRound: |
| libCall = spv::GLSLstd450Round; |
| break; |
| case glslang::EOpRoundEven: |
| libCall = spv::GLSLstd450RoundEven; |
| break; |
| case glslang::EOpCeil: |
| libCall = spv::GLSLstd450Ceil; |
| break; |
| case glslang::EOpFract: |
| libCall = spv::GLSLstd450Fract; |
| break; |
| |
| case glslang::EOpIsNan: |
| unaryOp = spv::OpIsNan; |
| break; |
| case glslang::EOpIsInf: |
| unaryOp = spv::OpIsInf; |
| break; |
| |
| case glslang::EOpPackSnorm2x16: |
| libCall = spv::GLSLstd450PackSnorm2x16; |
| break; |
| case glslang::EOpUnpackSnorm2x16: |
| libCall = spv::GLSLstd450UnpackSnorm2x16; |
| break; |
| case glslang::EOpPackUnorm2x16: |
| libCall = spv::GLSLstd450PackUnorm2x16; |
| break; |
| case glslang::EOpUnpackUnorm2x16: |
| libCall = spv::GLSLstd450UnpackUnorm2x16; |
| break; |
| case glslang::EOpPackHalf2x16: |
| libCall = spv::GLSLstd450PackHalf2x16; |
| break; |
| case glslang::EOpUnpackHalf2x16: |
| libCall = spv::GLSLstd450UnpackHalf2x16; |
| break; |
| case glslang::EOpPackSnorm4x8: |
| libCall = spv::GLSLstd450PackSnorm4x8; |
| break; |
| case glslang::EOpUnpackSnorm4x8: |
| libCall = spv::GLSLstd450UnpackSnorm4x8; |
| break; |
| case glslang::EOpPackUnorm4x8: |
| libCall = spv::GLSLstd450PackUnorm4x8; |
| break; |
| case glslang::EOpUnpackUnorm4x8: |
| libCall = spv::GLSLstd450UnpackUnorm4x8; |
| break; |
| case glslang::EOpPackDouble2x32: |
| libCall = spv::GLSLstd450PackDouble2x32; |
| break; |
| case glslang::EOpUnpackDouble2x32: |
| libCall = spv::GLSLstd450UnpackDouble2x32; |
| break; |
| |
| case glslang::EOpDPdx: |
| unaryOp = spv::OpDPdx; |
| break; |
| case glslang::EOpDPdy: |
| unaryOp = spv::OpDPdy; |
| break; |
| case glslang::EOpFwidth: |
| unaryOp = spv::OpFwidth; |
| break; |
| case glslang::EOpDPdxFine: |
| unaryOp = spv::OpDPdxFine; |
| break; |
| case glslang::EOpDPdyFine: |
| unaryOp = spv::OpDPdyFine; |
| break; |
| case glslang::EOpFwidthFine: |
| unaryOp = spv::OpFwidthFine; |
| break; |
| case glslang::EOpDPdxCoarse: |
| unaryOp = spv::OpDPdxCoarse; |
| break; |
| case glslang::EOpDPdyCoarse: |
| unaryOp = spv::OpDPdyCoarse; |
| break; |
| case glslang::EOpFwidthCoarse: |
| unaryOp = spv::OpFwidthCoarse; |
| break; |
| |
| case glslang::EOpAny: |
| unaryOp = spv::OpAny; |
| break; |
| case glslang::EOpAll: |
| unaryOp = spv::OpAll; |
| break; |
| |
| case glslang::EOpAbs: |
| if (isFloat) |
| libCall = spv::GLSLstd450FAbs; |
| else |
| libCall = spv::GLSLstd450SAbs; |
| break; |
| case glslang::EOpSign: |
| if (isFloat) |
| libCall = spv::GLSLstd450FSign; |
| else |
| libCall = spv::GLSLstd450SSign; |
| break; |
| |
| case glslang::EOpAtomicCounterIncrement: |
| case glslang::EOpAtomicCounterDecrement: |
| case glslang::EOpAtomicCounter: |
| { |
| // Handle all of the atomics in one place, in createAtomicOperation() |
| std::vector<spv::Id> operands; |
| operands.push_back(operand); |
| return createAtomicOperation(op, precision, typeId, operands, typeProxy); |
| } |
| |
| case glslang::EOpImageLoad: |
| unaryOp = spv::OpImageRead; |
| break; |
| |
| case glslang::EOpBitFieldReverse: |
| unaryOp = spv::OpBitReverse; |
| break; |
| case glslang::EOpBitCount: |
| unaryOp = spv::OpBitCount; |
| break; |
| case glslang::EOpFindLSB: |
| libCall = spv::GLSLstd450FindILSB; |
| break; |
| case glslang::EOpFindMSB: |
| spv::MissingFunctionality("signed vs. unsigned FindMSB"); |
| libCall = spv::GLSLstd450FindSMSB; |
| break; |
| |
| default: |
| return 0; |
| } |
| |
| spv::Id id; |
| if (libCall >= 0) { |
| std::vector<spv::Id> args; |
| args.push_back(operand); |
| id = builder.createBuiltinCall(precision, typeId, stdBuiltins, libCall, args); |
| } else |
| id = builder.createUnaryOp(unaryOp, typeId, operand); |
| |
| builder.setPrecision(id, precision); |
| |
| return id; |
| } |
| |
| spv::Id TGlslangToSpvTraverser::createConversion(glslang::TOperator op, spv::Decoration precision, spv::Id destType, spv::Id operand) |
| { |
| spv::Op convOp = spv::OpNop; |
| spv::Id zero = 0; |
| spv::Id one = 0; |
| |
| int vectorSize = builder.isVectorType(destType) ? builder.getNumTypeComponents(destType) : 0; |
| |
| switch (op) { |
| case glslang::EOpConvIntToBool: |
| case glslang::EOpConvUintToBool: |
| zero = builder.makeUintConstant(0); |
| zero = makeSmearedConstant(zero, vectorSize); |
| return builder.createBinOp(spv::OpINotEqual, destType, operand, zero); |
| |
| case glslang::EOpConvFloatToBool: |
| zero = builder.makeFloatConstant(0.0F); |
| zero = makeSmearedConstant(zero, vectorSize); |
| return builder.createBinOp(spv::OpFOrdNotEqual, destType, operand, zero); |
| |
| case glslang::EOpConvDoubleToBool: |
| zero = builder.makeDoubleConstant(0.0); |
| zero = makeSmearedConstant(zero, vectorSize); |
| return builder.createBinOp(spv::OpFOrdNotEqual, destType, operand, zero); |
| |
| case glslang::EOpConvBoolToFloat: |
| convOp = spv::OpSelect; |
| zero = builder.makeFloatConstant(0.0); |
| one = builder.makeFloatConstant(1.0); |
| break; |
| case glslang::EOpConvBoolToDouble: |
| convOp = spv::OpSelect; |
| zero = builder.makeDoubleConstant(0.0); |
| one = builder.makeDoubleConstant(1.0); |
| break; |
| case glslang::EOpConvBoolToInt: |
| zero = builder.makeIntConstant(0); |
| one = builder.makeIntConstant(1); |
| convOp = spv::OpSelect; |
| break; |
| case glslang::EOpConvBoolToUint: |
| zero = builder.makeUintConstant(0); |
| one = builder.makeUintConstant(1); |
| convOp = spv::OpSelect; |
| break; |
| |
| case glslang::EOpConvIntToFloat: |
| case glslang::EOpConvIntToDouble: |
| convOp = spv::OpConvertSToF; |
| break; |
| |
| case glslang::EOpConvUintToFloat: |
| case glslang::EOpConvUintToDouble: |
| convOp = spv::OpConvertUToF; |
| break; |
| |
| case glslang::EOpConvDoubleToFloat: |
| case glslang::EOpConvFloatToDouble: |
| convOp = spv::OpFConvert; |
| break; |
| |
| case glslang::EOpConvFloatToInt: |
| case glslang::EOpConvDoubleToInt: |
| convOp = spv::OpConvertFToS; |
| break; |
| |
| case glslang::EOpConvUintToInt: |
| case glslang::EOpConvIntToUint: |
| convOp = spv::OpBitcast; |
| break; |
| |
| case glslang::EOpConvFloatToUint: |
| case glslang::EOpConvDoubleToUint: |
| convOp = spv::OpConvertFToU; |
| break; |
| default: |
| break; |
| } |
| |
| spv::Id result = 0; |
| if (convOp == spv::OpNop) |
| return result; |
| |
| if (convOp == spv::OpSelect) { |
| zero = makeSmearedConstant(zero, vectorSize); |
| one = makeSmearedConstant(one, vectorSize); |
| result = builder.createTriOp(convOp, destType, operand, one, zero); |
| } else |
| result = builder.createUnaryOp(convOp, destType, operand); |
| |
| builder.setPrecision(result, precision); |
| |
| return result; |
| } |
| |
| spv::Id TGlslangToSpvTraverser::makeSmearedConstant(spv::Id constant, int vectorSize) |
| { |
| if (vectorSize == 0) |
| return constant; |
| |
| spv::Id vectorTypeId = builder.makeVectorType(builder.getTypeId(constant), vectorSize); |
| std::vector<spv::Id> components; |
| for (int c = 0; c < vectorSize; ++c) |
| components.push_back(constant); |
| return builder.makeCompositeConstant(vectorTypeId, components); |
| } |
| |
| // For glslang ops that map to SPV atomic opCodes |
| spv::Id TGlslangToSpvTraverser::createAtomicOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId, std::vector<spv::Id>& operands, glslang::TBasicType typeProxy) |
| { |
| spv::Op opCode = spv::OpNop; |
| |
| switch (op) { |
| case glslang::EOpAtomicAdd: |
| case glslang::EOpImageAtomicAdd: |
| opCode = spv::OpAtomicIAdd; |
| break; |
| case glslang::EOpAtomicMin: |
| case glslang::EOpImageAtomicMin: |
| opCode = typeProxy == glslang::EbtUint ? spv::OpAtomicUMin : spv::OpAtomicSMin; |
| break; |
| case glslang::EOpAtomicMax: |
| case glslang::EOpImageAtomicMax: |
| opCode = typeProxy == glslang::EbtUint ? spv::OpAtomicUMax : spv::OpAtomicSMax; |
| break; |
| case glslang::EOpAtomicAnd: |
| case glslang::EOpImageAtomicAnd: |
| opCode = spv::OpAtomicAnd; |
| break; |
| case glslang::EOpAtomicOr: |
| case glslang::EOpImageAtomicOr: |
| opCode = spv::OpAtomicOr; |
| break; |
| case glslang::EOpAtomicXor: |
| case glslang::EOpImageAtomicXor: |
| opCode = spv::OpAtomicXor; |
| break; |
| case glslang::EOpAtomicExchange: |
| case glslang::EOpImageAtomicExchange: |
| opCode = spv::OpAtomicExchange; |
| break; |
| case glslang::EOpAtomicCompSwap: |
| case glslang::EOpImageAtomicCompSwap: |
| opCode = spv::OpAtomicCompareExchange; |
| break; |
| case glslang::EOpAtomicCounterIncrement: |
| opCode = spv::OpAtomicIIncrement; |
| break; |
| case glslang::EOpAtomicCounterDecrement: |
| opCode = spv::OpAtomicIDecrement; |
| break; |
| case glslang::EOpAtomicCounter: |
| opCode = spv::OpAtomicLoad; |
| break; |
| default: |
| spv::MissingFunctionality("missing nested atomic"); |
| break; |
| } |
| |
| // Sort out the operands |
| // - mapping from glslang -> SPV |
| // - there are extra SPV operands with no glslang source |
| // - compare-exchange swaps the value and comparator |
| // - compare-exchange has an extra memory semantics |
| std::vector<spv::Id> spvAtomicOperands; // hold the spv operands |
| auto opIt = operands.begin(); // walk the glslang operands |
| spvAtomicOperands.push_back(*(opIt++)); |
| spvAtomicOperands.push_back(builder.makeUintConstant(spv::ScopeDevice)); // TBD: what is the correct scope? |
| spvAtomicOperands.push_back(builder.makeUintConstant(spv::MemorySemanticsMaskNone)); // TBD: what are the correct memory semantics? |
| if (opCode == spv::OpAtomicCompareExchange) { |
| // There are 2 memory semantics for compare-exchange. And the operand order of "comparator" and "new value" in GLSL |
| // differs from that in SPIR-V. Hence, special processing is required. |
| spvAtomicOperands.push_back(builder.makeUintConstant(spv::MemorySemanticsMaskNone)); |
| spvAtomicOperands.push_back(*(opIt + 1)); |
| spvAtomicOperands.push_back(*opIt); |
| opIt += 2; |
| } |
| |
| // Add the rest of the operands, skipping any that were dealt with above. |
| for (; opIt != operands.end(); ++opIt) |
| spvAtomicOperands.push_back(*opIt); |
| |
| return builder.createOp(opCode, typeId, spvAtomicOperands); |
| } |
| |
| spv::Id TGlslangToSpvTraverser::createMiscOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId, std::vector<spv::Id>& operands, glslang::TBasicType typeProxy) |
| { |
| bool isUnsigned = typeProxy == glslang::EbtUint; |
| bool isFloat = typeProxy == glslang::EbtFloat || typeProxy == glslang::EbtDouble; |
| |
| spv::Op opCode = spv::OpNop; |
| int libCall = -1; |
| |
| switch (op) { |
| case glslang::EOpMin: |
| if (isFloat) |
| libCall = spv::GLSLstd450FMin; |
| else if (isUnsigned) |
| libCall = spv::GLSLstd450UMin; |
| else |
| libCall = spv::GLSLstd450SMin; |
| break; |
| case glslang::EOpModf: |
| libCall = spv::GLSLstd450Modf; |
| break; |
| case glslang::EOpMax: |
| if (isFloat) |
| libCall = spv::GLSLstd450FMax; |
| else if (isUnsigned) |
| libCall = spv::GLSLstd450UMax; |
| else |
| libCall = spv::GLSLstd450SMax; |
| break; |
| case glslang::EOpPow: |
| libCall = spv::GLSLstd450Pow; |
| break; |
| case glslang::EOpDot: |
| opCode = spv::OpDot; |
| break; |
| case glslang::EOpAtan: |
| libCall = spv::GLSLstd450Atan2; |
| break; |
| |
| case glslang::EOpClamp: |
| if (isFloat) |
| libCall = spv::GLSLstd450FClamp; |
| else if (isUnsigned) |
| libCall = spv::GLSLstd450UClamp; |
| else |
| libCall = spv::GLSLstd450SClamp; |
| break; |
| case glslang::EOpMix: |
| libCall = spv::GLSLstd450Mix; |
| break; |
| case glslang::EOpStep: |
| libCall = spv::GLSLstd450Step; |
| break; |
| case glslang::EOpSmoothStep: |
| libCall = spv::GLSLstd450SmoothStep; |
| break; |
| |
| case glslang::EOpDistance: |
| libCall = spv::GLSLstd450Distance; |
| break; |
| case glslang::EOpCross: |
| libCall = spv::GLSLstd450Cross; |
| break; |
| case glslang::EOpFaceForward: |
| libCall = spv::GLSLstd450FaceForward; |
| break; |
| case glslang::EOpReflect: |
| libCall = spv::GLSLstd450Reflect; |
| break; |
| case glslang::EOpRefract: |
| libCall = spv::GLSLstd450Refract; |
| break; |
| |
| default: |
| return 0; |
| } |
| |
| spv::Id id = 0; |
| if (libCall >= 0) |
| id = builder.createBuiltinCall(precision, typeId, stdBuiltins, libCall, operands); |
| else { |
| switch (operands.size()) { |
| case 0: |
| // should all be handled by visitAggregate and createNoArgOperation |
| assert(0); |
| return 0; |
| case 1: |
| // should all be handled by createUnaryOperation |
| assert(0); |
| return 0; |
| case 2: |
| id = builder.createBinOp(opCode, typeId, operands[0], operands[1]); |
| break; |
| case 3: |
| id = builder.createTriOp(opCode, typeId, operands[0], operands[1], operands[2]); |
| break; |
| default: |
| // These do not exist yet |
| assert(0 && "operation with more than 3 operands"); |
| break; |
| } |
| } |
| |
| builder.setPrecision(id, precision); |
| |
| return id; |
| } |
| |
| // Intrinsics with no arguments, no return value, and no precision. |
| spv::Id TGlslangToSpvTraverser::createNoArgOperation(glslang::TOperator op) |
| { |
| // TODO: get the barrier operands correct |
| |
| switch (op) { |
| case glslang::EOpEmitVertex: |
| builder.createNoResultOp(spv::OpEmitVertex); |
| return 0; |
| case glslang::EOpEndPrimitive: |
| builder.createNoResultOp(spv::OpEndPrimitive); |
| return 0; |
| case glslang::EOpBarrier: |
| builder.createMemoryBarrier(spv::ScopeDevice, spv::MemorySemanticsAllMemory); |
| builder.createControlBarrier(spv::ScopeDevice, spv::ScopeDevice, spv::MemorySemanticsMaskNone); |
| return 0; |
| case glslang::EOpMemoryBarrier: |
| builder.createMemoryBarrier(spv::ScopeDevice, spv::MemorySemanticsAllMemory); |
| return 0; |
| case glslang::EOpMemoryBarrierAtomicCounter: |
| builder.createMemoryBarrier(spv::ScopeDevice, spv::MemorySemanticsAtomicCounterMemoryMask); |
| return 0; |
| case glslang::EOpMemoryBarrierBuffer: |
| builder.createMemoryBarrier(spv::ScopeDevice, spv::MemorySemanticsUniformMemoryMask); |
| return 0; |
| case glslang::EOpMemoryBarrierImage: |
| builder.createMemoryBarrier(spv::ScopeDevice, spv::MemorySemanticsImageMemoryMask); |
| return 0; |
| case glslang::EOpMemoryBarrierShared: |
| builder.createMemoryBarrier(spv::ScopeDevice, spv::MemorySemanticsWorkgroupLocalMemoryMask); |
| return 0; |
| case glslang::EOpGroupMemoryBarrier: |
| builder.createMemoryBarrier(spv::ScopeDevice, spv::MemorySemanticsWorkgroupGlobalMemoryMask); |
| return 0; |
| default: |
| spv::MissingFunctionality("operation with no arguments"); |
| return 0; |
| } |
| } |
| |
| spv::Id TGlslangToSpvTraverser::getSymbolId(const glslang::TIntermSymbol* symbol) |
| { |
| auto iter = symbolValues.find(symbol->getId()); |
| spv::Id id; |
| if (symbolValues.end() != iter) { |
| id = iter->second; |
| return id; |
| } |
| |
| // it was not found, create it |
| id = createSpvVariable(symbol); |
| symbolValues[symbol->getId()] = id; |
| |
| if (! symbol->getType().isStruct()) { |
| addDecoration(id, TranslatePrecisionDecoration(symbol->getType())); |
| addDecoration(id, TranslateInterpolationDecoration(symbol->getType())); |
| if (symbol->getQualifier().hasLocation()) |
| builder.addDecoration(id, spv::DecorationLocation, symbol->getQualifier().layoutLocation); |
| if (symbol->getQualifier().hasIndex()) |
| builder.addDecoration(id, spv::DecorationIndex, symbol->getQualifier().layoutIndex); |
| if (symbol->getQualifier().hasComponent()) |
| builder.addDecoration(id, spv::DecorationComponent, symbol->getQualifier().layoutComponent); |
| if (glslangIntermediate->getXfbMode()) { |
| if (symbol->getQualifier().hasXfbStride()) |
| builder.addDecoration(id, spv::DecorationXfbStride, symbol->getQualifier().layoutXfbStride); |
| if (symbol->getQualifier().hasXfbBuffer()) |
| builder.addDecoration(id, spv::DecorationXfbBuffer, symbol->getQualifier().layoutXfbBuffer); |
| if (symbol->getQualifier().hasXfbOffset()) |
| builder.addDecoration(id, spv::DecorationOffset, symbol->getQualifier().layoutXfbOffset); |
| } |
| } |
| |
| addDecoration(id, TranslateInvariantDecoration(symbol->getType())); |
| if (symbol->getQualifier().hasStream()) |
| builder.addDecoration(id, spv::DecorationStream, symbol->getQualifier().layoutStream); |
| if (symbol->getQualifier().hasSet()) |
| builder.addDecoration(id, spv::DecorationDescriptorSet, symbol->getQualifier().layoutSet); |
| if (symbol->getQualifier().hasBinding()) |
| builder.addDecoration(id, spv::DecorationBinding, symbol->getQualifier().layoutBinding); |
| if (glslangIntermediate->getXfbMode()) { |
| if (symbol->getQualifier().hasXfbStride()) |
| builder.addDecoration(id, spv::DecorationXfbStride, symbol->getQualifier().layoutXfbStride); |
| if (symbol->getQualifier().hasXfbBuffer()) |
| builder.addDecoration(id, spv::DecorationXfbBuffer, symbol->getQualifier().layoutXfbBuffer); |
| } |
| |
| // built-in variable decorations |
| spv::BuiltIn builtIn = TranslateBuiltInDecoration(symbol->getQualifier().builtIn); |
| if (builtIn != spv::BadValue) |
| builder.addDecoration(id, spv::DecorationBuiltIn, (int)builtIn); |
| |
| if (linkageOnly) |
| builder.addDecoration(id, spv::DecorationNoStaticUse); |
| |
| return id; |
| } |
| |
| void TGlslangToSpvTraverser::addDecoration(spv::Id id, spv::Decoration dec) |
| { |
| if (dec != spv::BadValue) |
| builder.addDecoration(id, dec); |
| } |
| |
| void TGlslangToSpvTraverser::addMemberDecoration(spv::Id id, int member, spv::Decoration dec) |
| { |
| if (dec != spv::BadValue) |
| builder.addMemberDecoration(id, (unsigned)member, dec); |
| } |
| |
| // Use 'consts' as the flattened glslang source of scalar constants to recursively |
| // build the aggregate SPIR-V constant. |
| // |
| // If there are not enough elements present in 'consts', 0 will be substituted; |
| // an empty 'consts' can be used to create a fully zeroed SPIR-V constant. |
| // |
| spv::Id TGlslangToSpvTraverser::createSpvConstant(const glslang::TType& glslangType, const glslang::TConstUnionArray& consts, int& nextConst) |
| { |
| // vector of constants for SPIR-V |
| std::vector<spv::Id> spvConsts; |
| |
| // Type is used for struct and array constants |
| spv::Id typeId = convertGlslangToSpvType(glslangType); |
| |
| if (glslangType.isArray()) { |
| glslang::TType elementType(glslangType, 0); |
| for (int i = 0; i < glslangType.getOuterArraySize(); ++i) |
| spvConsts.push_back(createSpvConstant(elementType, consts, nextConst)); |
| } else if (glslangType.isMatrix()) { |
| glslang::TType vectorType(glslangType, 0); |
| for (int col = 0; col < glslangType.getMatrixCols(); ++col) |
| spvConsts.push_back(createSpvConstant(vectorType, consts, nextConst)); |
| } else if (glslangType.getStruct()) { |
| glslang::TVector<glslang::TTypeLoc>::const_iterator iter; |
| for (iter = glslangType.getStruct()->begin(); iter != glslangType.getStruct()->end(); ++iter) |
| spvConsts.push_back(createSpvConstant(*iter->type, consts, nextConst)); |
| } else if (glslangType.isVector()) { |
| for (unsigned int i = 0; i < (unsigned int)glslangType.getVectorSize(); ++i) { |
| bool zero = nextConst >= consts.size(); |
| switch (glslangType.getBasicType()) { |
| case glslang::EbtInt: |
| spvConsts.push_back(builder.makeIntConstant(zero ? 0 : consts[nextConst].getIConst())); |
| break; |
| case glslang::EbtUint: |
| spvConsts.push_back(builder.makeUintConstant(zero ? 0 : consts[nextConst].getUConst())); |
| break; |
| case glslang::EbtFloat: |
| spvConsts.push_back(builder.makeFloatConstant(zero ? 0.0F : (float)consts[nextConst].getDConst())); |
| break; |
| case glslang::EbtDouble: |
| spvConsts.push_back(builder.makeDoubleConstant(zero ? 0.0 : consts[nextConst].getDConst())); |
| break; |
| case glslang::EbtBool: |
| spvConsts.push_back(builder.makeBoolConstant(zero ? false : consts[nextConst].getBConst())); |
| break; |
| default: |
| spv::MissingFunctionality("constant vector type"); |
| break; |
| } |
| ++nextConst; |
| } |
| } else { |
| // we have a non-aggregate (scalar) constant |
| bool zero = nextConst >= consts.size(); |
| spv::Id scalar = 0; |
| switch (glslangType.getBasicType()) { |
| case glslang::EbtInt: |
| scalar = builder.makeIntConstant(zero ? 0 : consts[nextConst].getIConst()); |
| break; |
| case glslang::EbtUint: |
| scalar = builder.makeUintConstant(zero ? 0 : consts[nextConst].getUConst()); |
| break; |
| case glslang::EbtFloat: |
| scalar = builder.makeFloatConstant(zero ? 0.0F : (float)consts[nextConst].getDConst()); |
| break; |
| case glslang::EbtDouble: |
| scalar = builder.makeDoubleConstant(zero ? 0.0 : consts[nextConst].getDConst()); |
| break; |
| case glslang::EbtBool: |
| scalar = builder.makeBoolConstant(zero ? false : consts[nextConst].getBConst()); |
| break; |
| default: |
| spv::MissingFunctionality("constant scalar type"); |
| break; |
| } |
| ++nextConst; |
| return scalar; |
| } |
| |
| return builder.makeCompositeConstant(typeId, spvConsts); |
| } |
| |
| // Return true if the node is a constant or symbol whose reading has no |
| // non-trivial observable cost or effect. |
| bool TGlslangToSpvTraverser::isTrivialLeaf(const glslang::TIntermTyped* node) |
| { |
| // don't know what this is |
| if (node == nullptr) |
| return false; |
| |
| // a constant is safe |
| if (node->getAsConstantUnion() != nullptr) |
| return true; |
| |
| // not a symbol means non-trivial |
| if (node->getAsSymbolNode() == nullptr) |
| return false; |
| |
| // a symbol, depends on what's being read |
| switch (node->getType().getQualifier().storage) { |
| case glslang::EvqTemporary: |
| case glslang::EvqGlobal: |
| case glslang::EvqIn: |
| case glslang::EvqInOut: |
| case glslang::EvqConst: |
| case glslang::EvqConstReadOnly: |
| case glslang::EvqUniform: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| // A node is trivial if it is a single operation with no side effects. |
| // Error on the side of saying non-trivial. |
| // Return true if trivial. |
| bool TGlslangToSpvTraverser::isTrivial(const glslang::TIntermTyped* node) |
| { |
| if (node == nullptr) |
| return false; |
| |
| // symbols and constants are trivial |
| if (isTrivialLeaf(node)) |
| return true; |
| |
| // otherwise, it needs to be a simple operation or one or two leaf nodes |
| |
| // not a simple operation |
| const glslang::TIntermBinary* binaryNode = node->getAsBinaryNode(); |
| const glslang::TIntermUnary* unaryNode = node->getAsUnaryNode(); |
| if (binaryNode == nullptr && unaryNode == nullptr) |
| return false; |
| |
| // not on leaf nodes |
| if (binaryNode && (! isTrivialLeaf(binaryNode->getLeft()) || ! isTrivialLeaf(binaryNode->getRight()))) |
| return false; |
| |
| if (unaryNode && ! isTrivialLeaf(unaryNode->getOperand())) { |
| return false; |
| } |
| |
| switch (node->getAsOperator()->getOp()) { |
| case glslang::EOpLogicalNot: |
| case glslang::EOpConvIntToBool: |
| case glslang::EOpConvUintToBool: |
| case glslang::EOpConvFloatToBool: |
| case glslang::EOpConvDoubleToBool: |
| case glslang::EOpEqual: |
| case glslang::EOpNotEqual: |
| case glslang::EOpLessThan: |
| case glslang::EOpGreaterThan: |
| case glslang::EOpLessThanEqual: |
| case glslang::EOpGreaterThanEqual: |
| case glslang::EOpIndexDirect: |
| case glslang::EOpIndexDirectStruct: |
| case glslang::EOpLogicalXor: |
| case glslang::EOpAny: |
| case glslang::EOpAll: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| // Emit short-circuiting code, where 'right' is never evaluated unless |
| // the left side is true (for &&) or false (for ||). |
| spv::Id TGlslangToSpvTraverser::createShortCircuit(glslang::TOperator op, glslang::TIntermTyped& left, glslang::TIntermTyped& right) |
| { |
| spv::Id boolTypeId = builder.makeBoolType(); |
| |
| // emit left operand |
| builder.clearAccessChain(); |
| left.traverse(this); |
| spv::Id leftId = builder.accessChainLoad(boolTypeId); |
| |
| // Operands to accumulate OpPhi operands |
| std::vector<spv::Id> phiOperands; |
| // accumulate left operand's phi information |
| phiOperands.push_back(leftId); |
| phiOperands.push_back(builder.getBuildPoint()->getId()); |
| |
| // Make the two kinds of operation symmetric with a "!" |
| // || => emit "if (! left) result = right" |
| // && => emit "if ( left) result = right" |
| // |
| // TODO: this runtime "not" for || could be avoided by adding functionality |
| // to 'builder' to have an "else" without an "then" |
| if (op == glslang::EOpLogicalOr) |
| leftId = builder.createUnaryOp(spv::OpLogicalNot, boolTypeId, leftId); |
| |
| // make an "if" based on the left value |
| spv::Builder::If ifBuilder(leftId, builder); |
| |
| // emit right operand as the "then" part of the "if" |
| builder.clearAccessChain(); |
| right.traverse(this); |
| spv::Id rightId = builder.accessChainLoad(boolTypeId); |
| |
| // accumulate left operand's phi information |
| phiOperands.push_back(rightId); |
| phiOperands.push_back(builder.getBuildPoint()->getId()); |
| |
| // finish the "if" |
| ifBuilder.makeEndIf(); |
| |
| // phi together the two results |
| return builder.createOp(spv::OpPhi, boolTypeId, phiOperands); |
| } |
| |
| }; // end anonymous namespace |
| |
| namespace glslang { |
| |
| void GetSpirvVersion(std::string& version) |
| { |
| const int bufSize = 100; |
| char buf[bufSize]; |
| snprintf(buf, bufSize, "%d, Revision %d", spv::Version, spv::Revision); |
| version = buf; |
| } |
| |
| // Write SPIR-V out to a binary file |
| void OutputSpv(const std::vector<unsigned int>& spirv, const char* baseName) |
| { |
| std::ofstream out; |
| out.open(baseName, std::ios::binary | std::ios::out); |
| for (int i = 0; i < (int)spirv.size(); ++i) { |
| unsigned int word = spirv[i]; |
| out.write((const char*)&word, 4); |
| } |
| out.close(); |
| } |
| |
| // |
| // Set up the glslang traversal |
| // |
| void GlslangToSpv(const glslang::TIntermediate& intermediate, std::vector<unsigned int>& spirv) |
| { |
| TIntermNode* root = intermediate.getTreeRoot(); |
| |
| if (root == 0) |
| return; |
| |
| glslang::GetThreadPoolAllocator().push(); |
| |
| TGlslangToSpvTraverser it(&intermediate); |
| |
| root->traverse(&it); |
| |
| it.dumpSpv(spirv); |
| |
| glslang::GetThreadPoolAllocator().pop(); |
| } |
| |
| }; // end namespace glslang |