kc3-lang/angle/src/compiler/translator/OutputGLSLBase.h

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• Author : Shahbaz Youssefi
  Date : 2020-01-17 14:53:38
  Hash : f1f082e1
  Message : Vulkan: Set varying location & xfb decorations in SPIR-V The shader translator outputs arbitrary location indices. Once compiled by glslang, the SPIR-V transformer modifies these decorations. If the transform feedback extension is used, it will also add the relevant decorations to the varyings that are captured. Bug: angleproject:3394 Change-Id: I5ecafd0536408612a5d4b920dbabbfabe650657c Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2008468 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>

• src/compiler/translator/OutputGLSLBase.h

• //
  // Copyright 2002 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  #ifndef COMPILER_TRANSLATOR_OUTPUTGLSLBASE_H_
  #define COMPILER_TRANSLATOR_OUTPUTGLSLBASE_H_
  
  #include <set>
  
  #include "compiler/translator/HashNames.h"
  #include "compiler/translator/InfoSink.h"
  #include "compiler/translator/tree_util/IntermTraverse.h"
  
  namespace sh
  {
  
  class TOutputGLSLBase : public TIntermTraverser
  {
    public:
      TOutputGLSLBase(TInfoSinkBase &objSink,
                      ShArrayIndexClampingStrategy clampingStrategy,
                      ShHashFunction64 hashFunction,
                      NameMap &nameMap,
                      TSymbolTable *symbolTable,
                      sh::GLenum shaderType,
                      int shaderVersion,
                      ShShaderOutput output,
                      ShCompileOptions compileOptions);
  
      ShShaderOutput getShaderOutput() const { return mOutput; }
  
      // Return the original name if hash function pointer is NULL;
      // otherwise return the hashed name. Has special handling for internal names and built-ins,
      // which are not hashed.
      ImmutableString hashName(const TSymbol *symbol);
  
    protected:
      TInfoSinkBase &objSink() { return mObjSink; }
      void writeFloat(TInfoSinkBase &out, float f);
      void writeTriplet(Visit visit, const char *preStr, const char *inStr, const char *postStr);
      std::string getCommonLayoutQualifiers(TIntermTyped *variable);
      std::string getMemoryQualifiers(const TType &type);
      virtual void writeLayoutQualifier(TIntermTyped *variable);
      void writeFieldLayoutQualifier(const TField *field);
      void writeInvariantQualifier(const TType &type);
      void writePreciseQualifier(const TType &type);
      virtual void writeVariableType(const TType &type,
                                     const TSymbol *symbol,
                                     bool isFunctionArgument);
      virtual bool writeVariablePrecision(TPrecision precision) = 0;
      void writeFunctionParameters(const TFunction *func);
      const TConstantUnion *writeConstantUnion(const TType &type, const TConstantUnion *pConstUnion);
      void writeConstructorTriplet(Visit visit, const TType &type);
      ImmutableString getTypeName(const TType &type);
  
      void visitSymbol(TIntermSymbol *node) override;
      void visitConstantUnion(TIntermConstantUnion *node) override;
      bool visitSwizzle(Visit visit, TIntermSwizzle *node) override;
      bool visitBinary(Visit visit, TIntermBinary *node) override;
      bool visitUnary(Visit visit, TIntermUnary *node) override;
      bool visitTernary(Visit visit, TIntermTernary *node) override;
      bool visitIfElse(Visit visit, TIntermIfElse *node) override;
      bool visitSwitch(Visit visit, TIntermSwitch *node) override;
      bool visitCase(Visit visit, TIntermCase *node) override;
      void visitFunctionPrototype(TIntermFunctionPrototype *node) override;
      bool visitFunctionDefinition(Visit visit, TIntermFunctionDefinition *node) override;
      bool visitAggregate(Visit visit, TIntermAggregate *node) override;
      bool visitBlock(Visit visit, TIntermBlock *node) override;
      bool visitGlobalQualifierDeclaration(Visit visit,
                                           TIntermGlobalQualifierDeclaration *node) override;
      bool visitDeclaration(Visit visit, TIntermDeclaration *node) override;
      bool visitLoop(Visit visit, TIntermLoop *node) override;
      bool visitBranch(Visit visit, TIntermBranch *node) override;
      void visitPreprocessorDirective(TIntermPreprocessorDirective *node) override;
  
      void visitCodeBlock(TIntermBlock *node);
  
      ImmutableString hashFieldName(const TField *field);
      // Same as hashName(), but without hashing "main".
      ImmutableString hashFunctionNameIfNeeded(const TFunction *func);
      // Used to translate function names for differences between ESSL and GLSL
      virtual ImmutableString translateTextureFunction(const ImmutableString &name,
                                                       const ShCompileOptions &option)
      {
          return name;
      }
  
      void declareStruct(const TStructure *structure);
      void writeQualifier(TQualifier qualifier, const TType &type, const TSymbol *symbol);
      bool structDeclared(const TStructure *structure) const;
  
      const char *mapQualifierToString(TQualifier qualifier);
  
      sh::GLenum getShaderType() { return mShaderType; }
  
    private:
      void declareInterfaceBlockLayout(const TInterfaceBlock *interfaceBlock);
      void declareInterfaceBlock(const TInterfaceBlock *interfaceBlock);
  
      void writeBuiltInFunctionTriplet(Visit visit, TOperator op, bool useEmulatedFunction);
  
      TInfoSinkBase &mObjSink;
      bool mDeclaringVariable;
  
      // This set contains all the ids of the structs from every scope.
      std::set<int> mDeclaredStructs;
  
      ShArrayIndexClampingStrategy mClampingStrategy;
  
      // name hashing.
      ShHashFunction64 mHashFunction;
  
      NameMap &mNameMap;
  
      sh::GLenum mShaderType;
  
      const int mShaderVersion;
  
      ShShaderOutput mOutput;
  
      ShCompileOptions mCompileOptions;
  };
  
  void WriteGeometryShaderLayoutQualifiers(TInfoSinkBase &out,
                                           sh::TLayoutPrimitiveType inputPrimitive,
                                           int invocations,
                                           sh::TLayoutPrimitiveType outputPrimitive,
                                           int maxVertices);
  
  bool NeedsToWriteLayoutQualifier(const TType &type);
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_OUTPUTGLSLBASE_H_