2577 lines
96 KiB
C++
2577 lines
96 KiB
C++
//
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//Copyright (C) 2014 LunarG, Inc.
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//
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//All rights reserved.
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//
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//Redistribution and use in source and binary forms, with or without
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//modification, are permitted provided that the following conditions
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//are met:
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//
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// Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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//
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// Neither the name of 3Dlabs Inc. Ltd. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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//THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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//"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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//LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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//FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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//COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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//INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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//BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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//LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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//CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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//LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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//ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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//POSSIBILITY OF SUCH DAMAGE.
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//
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// Author: John Kessenich, LunarG
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//
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// Visit the nodes in the glslang intermediate tree representation to
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// translate them to SPIR-V.
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//
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#include "spirv.h"
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#include "GlslangToSpv.h"
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#include "SpvBuilder.h"
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#include "GLSL450Lib.h"
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// Glslang includes
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#include "../glslang/MachineIndependent/localintermediate.h"
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#include "../glslang/MachineIndependent/SymbolTable.h"
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#include <string>
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#include <map>
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#include <list>
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#include <vector>
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#include <stack>
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#include <fstream>
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namespace {
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const int GlslangMagic = 0x51a;
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//
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// The main holder of information for translating glslang to SPIR-V.
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//
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// Derives from the AST walking base class.
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//
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class TGlslangToSpvTraverser : public glslang::TIntermTraverser {
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public:
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TGlslangToSpvTraverser(const glslang::TIntermediate*);
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virtual ~TGlslangToSpvTraverser();
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bool visitAggregate(glslang::TVisit, glslang::TIntermAggregate*);
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bool visitBinary(glslang::TVisit, glslang::TIntermBinary*);
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void visitConstantUnion(glslang::TIntermConstantUnion*);
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bool visitSelection(glslang::TVisit, glslang::TIntermSelection*);
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bool visitSwitch(glslang::TVisit, glslang::TIntermSwitch*);
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void visitSymbol(glslang::TIntermSymbol* symbol);
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bool visitUnary(glslang::TVisit, glslang::TIntermUnary*);
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bool visitLoop(glslang::TVisit, glslang::TIntermLoop*);
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bool visitBranch(glslang::TVisit visit, glslang::TIntermBranch*);
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void dumpSpv(std::vector<unsigned int>& out) { builder.dump(out); }
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protected:
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spv::Id createSpvVariable(const glslang::TIntermSymbol*);
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spv::Id getSampledType(const glslang::TSampler&);
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spv::Id convertGlslangToSpvType(const glslang::TType& type);
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bool isShaderEntrypoint(const glslang::TIntermAggregate* node);
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void makeFunctions(const glslang::TIntermSequence&);
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void makeGlobalInitializers(const glslang::TIntermSequence&);
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void visitFunctions(const glslang::TIntermSequence&);
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void handleFunctionEntry(const glslang::TIntermAggregate* node);
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void translateArguments(const glslang::TIntermSequence& glslangArguments, std::vector<spv::Id>& arguments);
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spv::Id handleBuiltInFunctionCall(const glslang::TIntermAggregate*);
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spv::Id handleUserFunctionCall(const glslang::TIntermAggregate*);
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spv::Id createBinaryOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId, spv::Id left, spv::Id right, glslang::TBasicType typeProxy, bool reduceComparison = true);
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spv::Id createUnaryOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId, spv::Id operand, bool isFloat);
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spv::Id createConversion(glslang::TOperator op, spv::Decoration precision, spv::Id destTypeId, spv::Id operand);
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spv::Id makeSmearedConstant(spv::Id constant, int vectorSize);
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spv::Id createMiscOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId, std::vector<spv::Id>& operands);
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spv::Id createNoArgOperation(glslang::TOperator op);
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spv::Id getSymbolId(const glslang::TIntermSymbol* node);
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void addDecoration(spv::Id id, spv::Decoration dec);
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void addMemberDecoration(spv::Id id, int member, spv::Decoration dec);
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spv::Id createSpvConstant(const glslang::TType& type, const glslang::TConstUnionArray&, int& nextConst);
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spv::Function* shaderEntry;
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int sequenceDepth;
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// There is a 1:1 mapping between a spv builder and a module; this is thread safe
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spv::Builder builder;
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bool inMain;
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bool mainTerminated;
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bool linkageOnly;
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const glslang::TIntermediate* glslangIntermediate;
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spv::Id stdBuiltins;
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std::unordered_map<int, spv::Id> symbolValues;
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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
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std::unordered_map<std::string, spv::Function*> functionMap;
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std::unordered_map<const glslang::TTypeList*, spv::Id> structMap;
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std::unordered_map<const glslang::TTypeList*, std::vector<int> > memberRemapper; // for mapping glslang block indices to spv indices (e.g., due to hidden members)
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std::stack<bool> breakForLoop; // false means break for switch
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std::stack<glslang::TIntermTyped*> loopTerminal; // code from the last part of a for loop: for(...; ...; terminal), needed for e.g., continue };
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};
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//
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// Helper functions for translating glslang representations to SPIR-V enumerants.
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//
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// Translate glslang profile to SPIR-V source language.
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spv::SourceLanguage TranslateSourceLanguage(EProfile profile)
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{
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switch (profile) {
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case ENoProfile:
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case ECoreProfile:
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case ECompatibilityProfile:
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return spv::SourceLanguageGLSL;
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case EEsProfile:
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return spv::SourceLanguageESSL;
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default:
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return spv::SourceLanguageUnknown;
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}
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}
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// Translate glslang language (stage) to SPIR-V execution model.
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spv::ExecutionModel TranslateExecutionModel(EShLanguage stage)
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{
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switch (stage) {
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case EShLangVertex: return spv::ExecutionModelVertex;
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case EShLangTessControl: return spv::ExecutionModelTessellationControl;
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case EShLangTessEvaluation: return spv::ExecutionModelTessellationEvaluation;
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case EShLangGeometry: return spv::ExecutionModelGeometry;
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case EShLangFragment: return spv::ExecutionModelFragment;
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case EShLangCompute: return spv::ExecutionModelGLCompute;
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default:
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spv::MissingFunctionality("GLSL stage");
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return spv::ExecutionModelFragment;
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}
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}
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// Translate glslang type to SPIR-V storage class.
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spv::StorageClass TranslateStorageClass(const glslang::TType& type)
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{
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if (type.getQualifier().isPipeInput())
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return spv::StorageClassInput;
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else if (type.getQualifier().isPipeOutput())
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return spv::StorageClassOutput;
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else if (type.getQualifier().isUniformOrBuffer()) {
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if (type.getBasicType() == glslang::EbtBlock)
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return spv::StorageClassUniform;
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else
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return spv::StorageClassUniformConstant;
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// TODO: how are we distuingishing between default and non-default non-writable uniforms? Do default uniforms even exist?
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} else {
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switch (type.getQualifier().storage) {
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case glslang::EvqShared: return spv::StorageClassWorkgroupLocal; break;
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case glslang::EvqGlobal: return spv::StorageClassPrivateGlobal;
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case glslang::EvqConstReadOnly: return spv::StorageClassFunction;
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case glslang::EvqTemporary: return spv::StorageClassFunction;
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default:
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spv::MissingFunctionality("unknown glslang storage class");
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return spv::StorageClassFunction;
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}
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}
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}
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// Translate glslang sampler type to SPIR-V dimensionality.
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spv::Dim TranslateDimensionality(const glslang::TSampler& sampler)
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{
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switch (sampler.dim) {
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case glslang::Esd1D: return spv::Dim1D;
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case glslang::Esd2D: return spv::Dim2D;
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case glslang::Esd3D: return spv::Dim3D;
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case glslang::EsdCube: return spv::DimCube;
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case glslang::EsdRect: return spv::DimRect;
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case glslang::EsdBuffer: return spv::DimBuffer;
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default:
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spv::MissingFunctionality("unknown sampler dimension");
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return spv::Dim2D;
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}
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}
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// Translate glslang type to SPIR-V precision decorations.
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spv::Decoration TranslatePrecisionDecoration(const glslang::TType& type)
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{
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switch (type.getQualifier().precision) {
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case glslang::EpqLow: return spv::DecorationPrecisionLow;
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case glslang::EpqMedium: return spv::DecorationPrecisionMedium;
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case glslang::EpqHigh: return spv::DecorationPrecisionHigh;
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default:
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return spv::NoPrecision;
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}
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}
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// Translate glslang type to SPIR-V block decorations.
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spv::Decoration TranslateBlockDecoration(const glslang::TType& type)
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{
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if (type.getBasicType() == glslang::EbtBlock) {
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switch (type.getQualifier().storage) {
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case glslang::EvqUniform: return spv::DecorationBlock;
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case glslang::EvqBuffer: return spv::DecorationBufferBlock;
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case glslang::EvqVaryingIn: return spv::DecorationBlock;
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case glslang::EvqVaryingOut: return spv::DecorationBlock;
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default:
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spv::MissingFunctionality("kind of block");
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break;
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}
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}
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return (spv::Decoration)spv::BadValue;
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}
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// Translate glslang type to SPIR-V layout decorations.
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spv::Decoration TranslateLayoutDecoration(const glslang::TType& type)
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{
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if (type.isMatrix()) {
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switch (type.getQualifier().layoutMatrix) {
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case glslang::ElmRowMajor:
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return spv::DecorationRowMajor;
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default:
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return spv::DecorationColMajor;
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}
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} else {
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switch (type.getBasicType()) {
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default:
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return (spv::Decoration)spv::BadValue;
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break;
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case glslang::EbtBlock:
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switch (type.getQualifier().storage) {
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case glslang::EvqUniform:
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case glslang::EvqBuffer:
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switch (type.getQualifier().layoutPacking) {
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case glslang::ElpShared: return spv::DecorationGLSLShared;
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case glslang::ElpStd140: return spv::DecorationGLSLStd140;
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case glslang::ElpStd430: return spv::DecorationGLSLStd430;
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case glslang::ElpPacked: return spv::DecorationGLSLPacked;
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default:
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spv::MissingFunctionality("uniform block layout");
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return spv::DecorationGLSLShared;
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}
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case glslang::EvqVaryingIn:
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case glslang::EvqVaryingOut:
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if (type.getQualifier().layoutPacking != glslang::ElpNone)
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spv::MissingFunctionality("in/out block layout");
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return (spv::Decoration)spv::BadValue;
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default:
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spv::MissingFunctionality("block storage qualification");
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return (spv::Decoration)spv::BadValue;
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}
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}
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}
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}
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// Translate glslang type to SPIR-V interpolation decorations.
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spv::Decoration TranslateInterpolationDecoration(const glslang::TType& type)
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{
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if (type.getQualifier().smooth)
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return spv::DecorationSmooth;
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if (type.getQualifier().nopersp)
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return spv::DecorationNoperspective;
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else if (type.getQualifier().patch)
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return spv::DecorationPatch;
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else if (type.getQualifier().flat)
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return spv::DecorationFlat;
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else if (type.getQualifier().centroid)
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return spv::DecorationCentroid;
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else if (type.getQualifier().sample)
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return spv::DecorationSample;
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else
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return (spv::Decoration)spv::BadValue;
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}
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// If glslang type is invaraiant, return SPIR-V invariant decoration.
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spv::Decoration TranslateInvariantDecoration(const glslang::TType& type)
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{
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if (type.getQualifier().invariant)
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return spv::DecorationInvariant;
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else
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return (spv::Decoration)spv::BadValue;
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}
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// Translate glslang built-in variable to SPIR-V built in decoration.
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spv::BuiltIn TranslateBuiltInDecoration(glslang::TBuiltInVariable builtIn)
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{
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switch (builtIn) {
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case glslang::EbvPosition: return spv::BuiltInPosition;
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case glslang::EbvPointSize: return spv::BuiltInPointSize;
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case glslang::EbvClipVertex: return spv::BuiltInClipVertex;
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case glslang::EbvClipDistance: return spv::BuiltInClipDistance;
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case glslang::EbvCullDistance: return spv::BuiltInCullDistance;
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case glslang::EbvVertexId: return spv::BuiltInVertexId;
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case glslang::EbvInstanceId: return spv::BuiltInInstanceId;
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case glslang::EbvPrimitiveId: return spv::BuiltInPrimitiveId;
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case glslang::EbvInvocationId: return spv::BuiltInInvocationId;
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case glslang::EbvLayer: return spv::BuiltInLayer;
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case glslang::EbvViewportIndex: return spv::BuiltInViewportIndex;
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case glslang::EbvTessLevelInner: return spv::BuiltInTessLevelInner;
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case glslang::EbvTessLevelOuter: return spv::BuiltInTessLevelOuter;
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case glslang::EbvTessCoord: return spv::BuiltInTessCoord;
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case glslang::EbvPatchVertices: return spv::BuiltInPatchVertices;
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case glslang::EbvFragCoord: return spv::BuiltInFragCoord;
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case glslang::EbvPointCoord: return spv::BuiltInPointCoord;
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case glslang::EbvFace: return spv::BuiltInFrontFacing;
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case glslang::EbvSampleId: return spv::BuiltInSampleId;
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case glslang::EbvSamplePosition: return spv::BuiltInSamplePosition;
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case glslang::EbvSampleMask: return spv::BuiltInSampleMask;
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case glslang::EbvFragColor: return spv::BuiltInFragColor;
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case glslang::EbvFragData: return spv::BuiltInFragColor;
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case glslang::EbvFragDepth: return spv::BuiltInFragDepth;
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case glslang::EbvHelperInvocation: return spv::BuiltInHelperInvocation;
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case glslang::EbvNumWorkGroups: return spv::BuiltInNumWorkgroups;
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case glslang::EbvWorkGroupSize: return spv::BuiltInWorkgroupSize;
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case glslang::EbvWorkGroupId: return spv::BuiltInWorkgroupId;
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case glslang::EbvLocalInvocationId: return spv::BuiltInLocalInvocationId;
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case glslang::EbvLocalInvocationIndex: return spv::BuiltInLocalInvocationIndex;
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case glslang::EbvGlobalInvocationId: return spv::BuiltInGlobalInvocationId;
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default: return (spv::BuiltIn)spv::BadValue;
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}
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}
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//
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// Implement the TGlslangToSpvTraverser class.
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//
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TGlslangToSpvTraverser::TGlslangToSpvTraverser(const glslang::TIntermediate* glslangIntermediate)
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: TIntermTraverser(true, false, true), shaderEntry(0), sequenceDepth(0),
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builder(GlslangMagic),
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inMain(false), mainTerminated(false), linkageOnly(false),
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glslangIntermediate(glslangIntermediate)
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{
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spv::ExecutionModel executionModel = TranslateExecutionModel(glslangIntermediate->getStage());
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builder.clearAccessChain();
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builder.setSource(TranslateSourceLanguage(glslangIntermediate->getProfile()), glslangIntermediate->getVersion());
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stdBuiltins = builder.import("GLSL.std.450");
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builder.setMemoryModel(spv::AddressingModelLogical, spv::MemoryModelGLSL450);
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shaderEntry = builder.makeMain();
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builder.addEntryPoint(executionModel, shaderEntry);
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// Add the source extensions
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const auto& sourceExtensions = glslangIntermediate->getRequestedExtensions();
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for (auto it = sourceExtensions.begin(); it != sourceExtensions.end(); ++it)
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builder.addSourceExtension(it->c_str());
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// Add the top-level modes for this shader.
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if (glslangIntermediate->getXfbMode())
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builder.addExecutionMode(shaderEntry, spv::ExecutionModeXfb);
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unsigned int mode;
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switch (glslangIntermediate->getStage()) {
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case EShLangVertex:
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break;
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case EShLangTessControl:
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builder.addExecutionMode(shaderEntry, spv::ExecutionModeOutputVertices, glslangIntermediate->getVertices());
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break;
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case EShLangTessEvaluation:
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switch (glslangIntermediate->getInputPrimitive()) {
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case glslang::ElgTriangles: mode = spv::ExecutionModeInputTriangles; break;
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case glslang::ElgQuads: mode = spv::ExecutionModeInputQuads; break;
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case glslang::ElgIsolines: mode = spv::ExecutionModeInputIsolines; break;
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default: mode = spv::BadValue; break;
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}
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if (mode != spv::BadValue)
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builder.addExecutionMode(shaderEntry, (spv::ExecutionMode)mode);
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// TODO
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//builder.addExecutionMode(spv::VertexSpacingMdName, glslangIntermediate->getVertexSpacing());
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//builder.addExecutionMode(spv::VertexOrderMdName, glslangIntermediate->getVertexOrder());
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//builder.addExecutionMode(spv::PointModeMdName, glslangIntermediate->getPointMode());
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break;
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case EShLangGeometry:
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switch (glslangIntermediate->getInputPrimitive()) {
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case glslang::ElgPoints: mode = spv::ExecutionModeInputPoints; break;
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case glslang::ElgLines: mode = spv::ExecutionModeInputLines; break;
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case glslang::ElgLinesAdjacency: mode = spv::ExecutionModeInputLinesAdjacency; break;
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case glslang::ElgTriangles: mode = spv::ExecutionModeInputTriangles; break;
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case glslang::ElgTrianglesAdjacency: mode = spv::ExecutionModeInputTrianglesAdjacency; break;
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default: mode = spv::BadValue; break;
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}
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if (mode != spv::BadValue)
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builder.addExecutionMode(shaderEntry, (spv::ExecutionMode)mode);
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builder.addExecutionMode(shaderEntry, spv::ExecutionModeInvocations, glslangIntermediate->getInvocations());
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switch (glslangIntermediate->getOutputPrimitive()) {
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case glslang::ElgPoints: mode = spv::ExecutionModeOutputPoints; break;
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case glslang::ElgLineStrip: mode = spv::ExecutionModeOutputLineStrip; break;
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case glslang::ElgTriangleStrip: mode = spv::ExecutionModeOutputTriangleStrip; break;
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default: mode = spv::BadValue; break;
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}
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if (mode != spv::BadValue)
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|
builder.addExecutionMode(shaderEntry, (spv::ExecutionMode)mode);
|
|
builder.addExecutionMode(shaderEntry, spv::ExecutionModeOutputVertices, glslangIntermediate->getVertices());
|
|
break;
|
|
|
|
case EShLangFragment:
|
|
if (glslangIntermediate->getPixelCenterInteger())
|
|
builder.addExecutionMode(shaderEntry, spv::ExecutionModePixelCenterInteger);
|
|
if (glslangIntermediate->getOriginUpperLeft())
|
|
builder.addExecutionMode(shaderEntry, spv::ExecutionModeOriginUpperLeft);
|
|
break;
|
|
|
|
case EShLangCompute:
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
TGlslangToSpvTraverser::~TGlslangToSpvTraverser()
|
|
{
|
|
if (! mainTerminated) {
|
|
spv::Block* lastMainBlock = shaderEntry->getLastBlock();
|
|
builder.setBuildPoint(lastMainBlock);
|
|
builder.leaveFunction(true);
|
|
}
|
|
}
|
|
|
|
//
|
|
// 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(TranslatePrecisionDecoration(node->getRight()->getType()));
|
|
|
|
if (node->getOp() != glslang::EOpAssign) {
|
|
// the left is also an r-value
|
|
builder.setAccessChain(lValue);
|
|
spv::Id leftRValue = builder.accessChainLoad(TranslatePrecisionDecoration(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);
|
|
} else {
|
|
// normal case for indexing array or structure or block
|
|
builder.accessChainPush(builder.makeIntConstant(index), convertGlslangToSpvType(node->getType()));
|
|
}
|
|
}
|
|
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(TranslatePrecisionDecoration(node->getRight()->getType()));
|
|
|
|
// restore the saved access chain
|
|
builder.setAccessChain(partial);
|
|
|
|
if (! node->getLeft()->getType().isArray() && node->getLeft()->getType().isVector())
|
|
builder.accessChainPushComponent(index);
|
|
else
|
|
builder.accessChainPush(index, convertGlslangToSpvType(node->getType()));
|
|
}
|
|
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);
|
|
}
|
|
return false;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
// Assume generic binary op...
|
|
|
|
// Get the operands
|
|
builder.clearAccessChain();
|
|
node->getLeft()->traverse(this);
|
|
spv::Id left = builder.accessChainLoad(TranslatePrecisionDecoration(node->getLeft()->getType()));
|
|
|
|
builder.clearAccessChain();
|
|
node->getRight()->traverse(this);
|
|
spv::Id right = builder.accessChainLoad(TranslatePrecisionDecoration(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)
|
|
{
|
|
builder.clearAccessChain();
|
|
node->getOperand()->traverse(this);
|
|
spv::Id operand = builder.accessChainLoad(TranslatePrecisionDecoration(node->getOperand()->getType()));
|
|
|
|
spv::Decoration precision = TranslatePrecisionDecoration(node->getType());
|
|
|
|
// it could be a conversion
|
|
spv::Id 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() == glslang::EbtFloat || node->getBasicType() == glslang::EbtDouble);
|
|
|
|
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;
|
|
glslang::TOperator binOp = glslang::EOpNull;
|
|
bool reduceComparison = true;
|
|
bool isMatrix = false;
|
|
bool noReturnValue = 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);
|
|
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);
|
|
else
|
|
result = handleBuiltInFunctionCall(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->getSequence(), 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::EOpArrayLength:
|
|
{
|
|
glslang::TIntermTyped* typedNode = node->getSequence()[0]->getAsTyped();
|
|
assert(typedNode);
|
|
spv::Id length = builder.makeIntConstant(typedNode->getType().getArraySize());
|
|
|
|
builder.clearAccessChain();
|
|
builder.setAccessChainRValue(length);
|
|
|
|
return false;
|
|
}
|
|
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;
|
|
|
|
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(TranslatePrecisionDecoration(left->getType()));
|
|
|
|
builder.clearAccessChain();
|
|
right->traverse(this);
|
|
spv::Id rightId = builder.accessChainLoad(TranslatePrecisionDecoration(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;
|
|
}
|
|
|
|
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::EOpUAddCarry:
|
|
//case glslang::EOpUSubBorrow:
|
|
//case glslang::EOpUMulExtended:
|
|
default:
|
|
break;
|
|
}
|
|
if (lvalue)
|
|
operands.push_back(builder.accessChainGetLValue());
|
|
else
|
|
operands.push_back(builder.accessChainLoad(TranslatePrecisionDecoration(glslangOperands[arg]->getAsTyped()->getType())));
|
|
}
|
|
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() == glslang::EbtFloat || node->getType().getBasicType() == glslang::EbtDouble);
|
|
break;
|
|
default:
|
|
result = createMiscOperation(node->getOp(), precision, convertGlslangToSpvType(node->getType()), operands);
|
|
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(spv::NoPrecision), builder);
|
|
|
|
if (node->getTrueBlock()) {
|
|
// emit the "then" statement
|
|
node->getTrueBlock()->traverse(this);
|
|
if (result)
|
|
builder.createStore(builder.accessChainLoad(TranslatePrecisionDecoration(node->getTrueBlock()->getAsTyped()->getType())), result);
|
|
}
|
|
|
|
if (node->getFalseBlock()) {
|
|
ifBuilder.makeBeginElse();
|
|
// emit the "else" statement
|
|
node->getFalseBlock()->traverse(this);
|
|
if (result)
|
|
builder.createStore(builder.accessChainLoad(TranslatePrecisionDecoration(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(TranslatePrecisionDecoration(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(TranslatePrecisionDecoration(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 (inMain)
|
|
builder.makeMainReturn();
|
|
else if (node->getExpression())
|
|
builder.makeReturn(false, builder.accessChainLoad(TranslatePrecisionDecoration(node->getExpression()->getType())));
|
|
else
|
|
builder.makeReturn();
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
// Do full recursive conversion of an arbitrary glslang type to a SPIR-V Id.
|
|
spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& type)
|
|
{
|
|
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::EbtSampler:
|
|
{
|
|
const glslang::TSampler& sampler = type.getSampler();
|
|
spvType = builder.makeSampler(getSampledType(sampler), TranslateDimensionality(sampler),
|
|
sampler.image ? spv::Builder::samplerContentImage : spv::Builder::samplerContentTextureFilter,
|
|
sampler.arrayed, sampler.shadow, sampler.ms);
|
|
}
|
|
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));
|
|
}
|
|
}
|
|
|
|
// Make the SPIR-V type
|
|
spvType = builder.makeStructType(structFields, type.getTypeName().c_str());
|
|
structMap[glslangStruct] = spvType;
|
|
|
|
// Name and decorate the non-hidden members
|
|
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);
|
|
|
|
// built-in variable decorations
|
|
int builtIn = TranslateBuiltInDecoration(glslangType.getQualifier().builtIn);
|
|
if (builtIn != spv::BadValue)
|
|
builder.addMemberDecoration(spvType, member, spv::DecorationBuiltIn, 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::DecorationStride, 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()) {
|
|
unsigned arraySize;
|
|
if (! type.isExplicitlySizedArray()) {
|
|
spv::MissingFunctionality("Unsized array");
|
|
arraySize = 8;
|
|
} else
|
|
arraySize = type.getArraySize();
|
|
spvType = builder.makeArrayType(spvType, arraySize);
|
|
}
|
|
|
|
return spvType;
|
|
}
|
|
|
|
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::TIntermSequence& glslangArguments, std::vector<spv::Id>& arguments)
|
|
{
|
|
for (int i = 0; i < (int)glslangArguments.size(); ++i) {
|
|
builder.clearAccessChain();
|
|
glslangArguments[i]->traverse(this);
|
|
arguments.push_back(builder.accessChainLoad(TranslatePrecisionDecoration(glslangArguments[i]->getAsTyped()->getType())));
|
|
}
|
|
}
|
|
|
|
spv::Id TGlslangToSpvTraverser::handleBuiltInFunctionCall(const glslang::TIntermAggregate* node)
|
|
{
|
|
std::vector<spv::Id> arguments;
|
|
translateArguments(node->getSequence(), arguments);
|
|
|
|
std::vector<spv::Id> argTypes;
|
|
for (int a = 0; a < (int)arguments.size(); ++a)
|
|
argTypes.push_back(builder.getTypeId(arguments[a]));
|
|
|
|
spv::Decoration precision = TranslatePrecisionDecoration(node->getType());
|
|
|
|
if (node->getName() == "ftransform(") {
|
|
spv::MissingFunctionality("ftransform()");
|
|
//spv::Id vertex = builder.createVariable(spv::StorageShaderGlobal, spv::VectorType::get(spv::makeFloatType(), 4),
|
|
// "gl_Vertex_sim");
|
|
//spv::Id matrix = builder.createVariable(spv::StorageShaderGlobal, spv::VectorType::get(spv::makeFloatType(), 4),
|
|
// "gl_ModelViewProjectionMatrix_sim");
|
|
return 0;
|
|
}
|
|
|
|
if (node->getName().substr(0, 7) == "texture" || node->getName().substr(0, 5) == "texel" || node->getName().substr(0, 6) == "shadow") {
|
|
const glslang::TSampler sampler = node->getSequence()[0]->getAsTyped()->getType().getSampler();
|
|
spv::Builder::TextureParameters params = { };
|
|
params.sampler = arguments[0];
|
|
|
|
// special case size query
|
|
if (node->getName().find("textureSize", 0) != std::string::npos) {
|
|
if (arguments.size() > 1) {
|
|
params.lod = arguments[1];
|
|
return builder.createTextureQueryCall(spv::OpTextureQuerySizeLod, params);
|
|
} else
|
|
return builder.createTextureQueryCall(spv::OpTextureQuerySize, params);
|
|
}
|
|
|
|
// special case the number of samples query
|
|
if (node->getName().find("textureSamples", 0) != std::string::npos)
|
|
return builder.createTextureQueryCall(spv::OpTextureQuerySamples, params);
|
|
|
|
// special case the other queries
|
|
if (node->getName().find("Query", 0) != std::string::npos) {
|
|
if (node->getName().find("Levels", 0) != std::string::npos)
|
|
return builder.createTextureQueryCall(spv::OpTextureQueryLevels, params);
|
|
else if (node->getName().find("Lod", 0) != std::string::npos) {
|
|
params.coords = arguments[1];
|
|
return builder.createTextureQueryCall(spv::OpTextureQueryLod, params);
|
|
} else
|
|
spv::MissingFunctionality("glslang texture query");
|
|
}
|
|
|
|
// This is no longer a query....
|
|
|
|
bool lod = node->getName().find("Lod", 0) != std::string::npos;
|
|
bool proj = node->getName().find("Proj", 0) != std::string::npos;
|
|
bool offsets = node->getName().find("Offsets", 0) != std::string::npos;
|
|
bool offset = ! offsets && node->getName().find("Offset", 0) != std::string::npos;
|
|
bool fetch = node->getName().find("Fetch", 0) != std::string::npos;
|
|
bool gather = node->getName().find("Gather", 0) != std::string::npos;
|
|
bool grad = node->getName().find("Grad", 0) != std::string::npos;
|
|
|
|
if (fetch)
|
|
spv::MissingFunctionality("texel fetch");
|
|
if (gather)
|
|
spv::MissingFunctionality("texture gather");
|
|
|
|
// check for bias argument
|
|
bool bias = false;
|
|
if (! lod && ! gather && ! grad && ! fetch) {
|
|
int nonBiasArgCount = 2;
|
|
if (offset)
|
|
++nonBiasArgCount;
|
|
if (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];
|
|
if (lod) {
|
|
params.lod = arguments[2];
|
|
++extraArgs;
|
|
}
|
|
if (grad) {
|
|
params.gradX = arguments[2 + extraArgs];
|
|
params.gradY = arguments[3 + extraArgs];
|
|
extraArgs += 2;
|
|
}
|
|
//if (gather && compare) {
|
|
// params.compare = arguments[2 + extraArgs];
|
|
// ++extraArgs;
|
|
//}
|
|
if (offset | offsets) {
|
|
params.offset = arguments[2 + extraArgs];
|
|
++extraArgs;
|
|
}
|
|
if (bias) {
|
|
params.bias = arguments[2 + extraArgs];
|
|
++extraArgs;
|
|
}
|
|
|
|
return builder.createTextureCall(precision, convertGlslangToSpvType(node->getType()), proj, params);
|
|
}
|
|
|
|
spv::MissingFunctionality("built-in function call");
|
|
|
|
return 0;
|
|
}
|
|
|
|
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;
|
|
for (int a = 0; a < (int)glslangArgs.size(); ++a) {
|
|
// build l-value
|
|
builder.clearAccessChain();
|
|
glslangArgs[a]->traverse(this);
|
|
// 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(TranslatePrecisionDecoration(glslangArgs[a]->getAsTyped()->getType())));
|
|
}
|
|
}
|
|
|
|
// 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(spv::NoPrecision); // TODO: get precision
|
|
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::OpLogicalXor;
|
|
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;
|
|
}
|
|
|
|
if (binOp != spv::OpNop) {
|
|
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;
|
|
|
|
// 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, bool isFloat)
|
|
{
|
|
spv::Op unaryOp = spv::OpNop;
|
|
int libCall = -1;
|
|
|
|
switch (op) {
|
|
case glslang::EOpNegative:
|
|
if (isFloat)
|
|
unaryOp = spv::OpFNegate;
|
|
else
|
|
unaryOp = spv::OpSNegate;
|
|
break;
|
|
|
|
case glslang::EOpLogicalNot:
|
|
case glslang::EOpVectorLogicalNot:
|
|
case glslang::EOpBitwiseNot:
|
|
unaryOp = spv::OpNot;
|
|
break;
|
|
|
|
case glslang::EOpDeterminant:
|
|
libCall = GLSL_STD_450::Determinant;
|
|
break;
|
|
case glslang::EOpMatrixInverse:
|
|
libCall = GLSL_STD_450::MatrixInverse;
|
|
break;
|
|
case glslang::EOpTranspose:
|
|
unaryOp = spv::OpTranspose;
|
|
break;
|
|
|
|
case glslang::EOpRadians:
|
|
libCall = GLSL_STD_450::Radians;
|
|
break;
|
|
case glslang::EOpDegrees:
|
|
libCall = GLSL_STD_450::Degrees;
|
|
break;
|
|
case glslang::EOpSin:
|
|
libCall = GLSL_STD_450::Sin;
|
|
break;
|
|
case glslang::EOpCos:
|
|
libCall = GLSL_STD_450::Cos;
|
|
break;
|
|
case glslang::EOpTan:
|
|
libCall = GLSL_STD_450::Tan;
|
|
break;
|
|
case glslang::EOpAcos:
|
|
libCall = GLSL_STD_450::Acos;
|
|
break;
|
|
case glslang::EOpAsin:
|
|
libCall = GLSL_STD_450::Asin;
|
|
break;
|
|
case glslang::EOpAtan:
|
|
libCall = GLSL_STD_450::Atan;
|
|
break;
|
|
|
|
case glslang::EOpAcosh:
|
|
libCall = GLSL_STD_450::Acosh;
|
|
break;
|
|
case glslang::EOpAsinh:
|
|
libCall = GLSL_STD_450::Asinh;
|
|
break;
|
|
case glslang::EOpAtanh:
|
|
libCall = GLSL_STD_450::Atanh;
|
|
break;
|
|
case glslang::EOpTanh:
|
|
libCall = GLSL_STD_450::Tanh;
|
|
break;
|
|
case glslang::EOpCosh:
|
|
libCall = GLSL_STD_450::Cosh;
|
|
break;
|
|
case glslang::EOpSinh:
|
|
libCall = GLSL_STD_450::Sinh;
|
|
break;
|
|
|
|
case glslang::EOpLength:
|
|
libCall = GLSL_STD_450::Length;
|
|
break;
|
|
case glslang::EOpNormalize:
|
|
libCall = GLSL_STD_450::Normalize;
|
|
break;
|
|
|
|
case glslang::EOpExp:
|
|
libCall = GLSL_STD_450::Exp;
|
|
break;
|
|
case glslang::EOpLog:
|
|
libCall = GLSL_STD_450::Log;
|
|
break;
|
|
case glslang::EOpExp2:
|
|
libCall = GLSL_STD_450::Exp2;
|
|
break;
|
|
case glslang::EOpLog2:
|
|
libCall = GLSL_STD_450::Log2;
|
|
break;
|
|
case glslang::EOpSqrt:
|
|
libCall = GLSL_STD_450::Sqrt;
|
|
break;
|
|
case glslang::EOpInverseSqrt:
|
|
libCall = GLSL_STD_450::InverseSqrt;
|
|
break;
|
|
|
|
case glslang::EOpFloor:
|
|
libCall = GLSL_STD_450::Floor;
|
|
break;
|
|
case glslang::EOpTrunc:
|
|
libCall = GLSL_STD_450::Trunc;
|
|
break;
|
|
case glslang::EOpRound:
|
|
libCall = GLSL_STD_450::Round;
|
|
break;
|
|
case glslang::EOpRoundEven:
|
|
libCall = GLSL_STD_450::RoundEven;
|
|
break;
|
|
case glslang::EOpCeil:
|
|
libCall = GLSL_STD_450::Ceil;
|
|
break;
|
|
case glslang::EOpFract:
|
|
libCall = GLSL_STD_450::Fract;
|
|
break;
|
|
|
|
case glslang::EOpIsNan:
|
|
unaryOp = spv::OpIsNan;
|
|
break;
|
|
case glslang::EOpIsInf:
|
|
unaryOp = spv::OpIsInf;
|
|
break;
|
|
|
|
case glslang::EOpFloatBitsToInt:
|
|
libCall = GLSL_STD_450::FloatBitsToInt;
|
|
break;
|
|
case glslang::EOpFloatBitsToUint:
|
|
libCall = GLSL_STD_450::FloatBitsToUint;
|
|
break;
|
|
case glslang::EOpIntBitsToFloat:
|
|
libCall = GLSL_STD_450::IntBitsToFloat;
|
|
break;
|
|
case glslang::EOpUintBitsToFloat:
|
|
libCall = GLSL_STD_450::UintBitsToFloat;
|
|
break;
|
|
case glslang::EOpPackSnorm2x16:
|
|
libCall = GLSL_STD_450::PackSnorm2x16;
|
|
break;
|
|
case glslang::EOpUnpackSnorm2x16:
|
|
libCall = GLSL_STD_450::UnpackSnorm2x16;
|
|
break;
|
|
case glslang::EOpPackUnorm2x16:
|
|
libCall = GLSL_STD_450::PackUnorm2x16;
|
|
break;
|
|
case glslang::EOpUnpackUnorm2x16:
|
|
libCall = GLSL_STD_450::UnpackUnorm2x16;
|
|
break;
|
|
case glslang::EOpPackHalf2x16:
|
|
libCall = GLSL_STD_450::PackHalf2x16;
|
|
break;
|
|
case glslang::EOpUnpackHalf2x16:
|
|
libCall = GLSL_STD_450::UnpackHalf2x16;
|
|
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:
|
|
libCall = GLSL_STD_450::Abs;
|
|
break;
|
|
case glslang::EOpSign:
|
|
libCall = GLSL_STD_450::Sign;
|
|
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);
|
|
}
|
|
|
|
spv::Id TGlslangToSpvTraverser::createMiscOperation(glslang::TOperator op, spv::Decoration precision, spv::Id typeId, std::vector<spv::Id>& operands)
|
|
{
|
|
spv::Op opCode = spv::OpNop;
|
|
int libCall = -1;
|
|
|
|
switch (op) {
|
|
case glslang::EOpMin:
|
|
libCall = GLSL_STD_450::Min;
|
|
break;
|
|
case glslang::EOpModf:
|
|
libCall = GLSL_STD_450::Modf;
|
|
break;
|
|
case glslang::EOpMax:
|
|
libCall = GLSL_STD_450::Max;
|
|
break;
|
|
case glslang::EOpPow:
|
|
libCall = GLSL_STD_450::Pow;
|
|
break;
|
|
case glslang::EOpDot:
|
|
opCode = spv::OpDot;
|
|
break;
|
|
case glslang::EOpAtan:
|
|
libCall = GLSL_STD_450::Atan2;
|
|
break;
|
|
|
|
case glslang::EOpClamp:
|
|
libCall = GLSL_STD_450::Clamp;
|
|
break;
|
|
case glslang::EOpMix:
|
|
libCall = GLSL_STD_450::Mix;
|
|
break;
|
|
case glslang::EOpStep:
|
|
libCall = GLSL_STD_450::Step;
|
|
break;
|
|
case glslang::EOpSmoothStep:
|
|
libCall = GLSL_STD_450::SmoothStep;
|
|
break;
|
|
|
|
case glslang::EOpDistance:
|
|
libCall = GLSL_STD_450::Distance;
|
|
break;
|
|
case glslang::EOpCross:
|
|
libCall = GLSL_STD_450::Cross;
|
|
break;
|
|
case glslang::EOpFaceForward:
|
|
libCall = GLSL_STD_450::FaceForward;
|
|
break;
|
|
case glslang::EOpReflect:
|
|
libCall = GLSL_STD_450::Reflect;
|
|
break;
|
|
case glslang::EOpRefract:
|
|
libCall = GLSL_STD_450::Refract;
|
|
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.createTernaryOp(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::ExecutionScopeDevice, spv::MemorySemanticsAllMemory);
|
|
builder.createControlBarrier(spv::ExecutionScopeDevice);
|
|
return 0;
|
|
case glslang::EOpMemoryBarrier:
|
|
builder.createMemoryBarrier(spv::ExecutionScopeDevice, spv::MemorySemanticsAllMemory);
|
|
return 0;
|
|
case glslang::EOpMemoryBarrierAtomicCounter:
|
|
builder.createMemoryBarrier(spv::ExecutionScopeDevice, spv::MemorySemanticsAtomicCounterMemoryMask);
|
|
return 0;
|
|
case glslang::EOpMemoryBarrierBuffer:
|
|
builder.createMemoryBarrier(spv::ExecutionScopeDevice, spv::MemorySemanticsUniformMemoryMask);
|
|
return 0;
|
|
case glslang::EOpMemoryBarrierImage:
|
|
builder.createMemoryBarrier(spv::ExecutionScopeDevice, spv::MemorySemanticsImageMemoryMask);
|
|
return 0;
|
|
case glslang::EOpMemoryBarrierShared:
|
|
builder.createMemoryBarrier(spv::ExecutionScopeDevice, spv::MemorySemanticsWorkgroupLocalMemoryMask);
|
|
return 0;
|
|
case glslang::EOpGroupMemoryBarrier:
|
|
builder.createMemoryBarrier(spv::ExecutionScopeDevice, 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::DecorationStride, 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::DecorationStride, symbol->getQualifier().layoutXfbStride);
|
|
if (symbol->getQualifier().hasXfbBuffer())
|
|
builder.addDecoration(id, spv::DecorationXfbBuffer, symbol->getQualifier().layoutXfbBuffer);
|
|
}
|
|
|
|
// built-in variable decorations
|
|
int builtIn = TranslateBuiltInDecoration(symbol->getQualifier().builtIn);
|
|
if (builtIn != spv::BadValue)
|
|
builder.addDecoration(id, spv::DecorationBuiltIn, 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;
|
|
elementType.deepCopy(glslangType);
|
|
elementType.dereference();
|
|
for (int i = 0; i < glslangType.getArraySize(); ++i)
|
|
spvConsts.push_back(createSpvConstant(elementType, consts, nextConst));
|
|
} else if (glslangType.isMatrix()) {
|
|
glslang::TType vectorType;
|
|
vectorType.shallowCopy(glslangType);
|
|
vectorType.dereference();
|
|
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);
|
|
}
|
|
|
|
}; // 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
|