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

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• Hash : b36a4816
  Author :
  Date : 2018-09-25T10:15:11
  

  Vulkan: Add OpenGL line segment rasterization.
  
  Line rasterization rules are implemented using a shader patch. The
  patch does a small test and discards pixels that are outside of the
  OpenGL line region.
  
  The feature is disabled on Android until we can determine the root
  cause of the test failures.
  
  Bug: angleproject:2598
  Change-Id: Ic76c5e40fa3ceff7643e735e66f5a9050240c80b
  Reviewed-on: https://chromium-review.googlesource.com/1120153
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/compiler/translator/OutputGLSLBase.h

• //
  // Copyright (c) 2002-2013 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);
      virtual void writeLayoutQualifier(TIntermTyped *variable);
      void writeInvariantQualifier(const TType &type);
      void writeVariableType(const TType &type, const TSymbol *symbol);
      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 visitInvariantDeclaration(Visit visit, TIntermInvariantDeclaration *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) { return name; }
  
      void declareStruct(const TStructure *structure);
      virtual void writeQualifier(TQualifier qualifier, const TSymbol *symbol);
      bool structDeclared(const TStructure *structure) const;
  
    private:
      void declareInterfaceBlockLayout(const TInterfaceBlock *interfaceBlock);
      void declareInterfaceBlock(const TInterfaceBlock *interfaceBlock);
  
      void writeBuiltInFunctionTriplet(Visit visit, TOperator op, bool useEmulatedFunction);
  
      const char *mapQualifierToString(TQualifier qualifier);
  
      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_
  

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