kc3-lang/angle/src/compiler/OutputHLSL.h

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• Hash : 0f18961b
  Author :
  Date : 2010-05-07T13:03:36
  

  Prevent atan2 from generating a NaN
  TRAC #12184
  This is necessary because a NaN generated in flattened conditional code fails to get discarded on certain devices.
  Signed-off-by: Shannon Woods
  Signed-off-by: Daniel Koch
  
  Author:    Nicolas Capens
  
  git-svn-id: https://angleproject.googlecode.com/svn/trunk@248 736b8ea6-26fd-11df-bfd4-992fa37f6226
  

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• src/compiler/OutputHLSL.h

• //
  // Copyright (c) 2002-2010 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_OUTPUTHLSL_H_
  #define COMPILER_OUTPUTHLSL_H_
  
  #include "compiler/intermediate.h"
  #include "compiler/ParseHelper.h"
  
  namespace sh
  {
  class UnfoldSelect;
  
  class OutputHLSL : public TIntermTraverser
  {
    public:
      explicit OutputHLSL(TParseContext &context);
      ~OutputHLSL();
  
      void output();
  
      TInfoSinkBase &getBodyStream();
  
      static TString qualifierString(TQualifier qualifier);
      static TString typeString(const TType &type);
      static TString arrayString(const TType &type);
      static TString initializer(const TType &type);
      static TString decorate(const TString &string);   // Prepend an underscore to avoid naming clashes
  
    protected:
      void header();
      void footer();
  
      // Visit AST nodes and output their code to the body stream
      void visitSymbol(TIntermSymbol*);
      void visitConstantUnion(TIntermConstantUnion*);
      bool visitBinary(Visit visit, TIntermBinary*);
      bool visitUnary(Visit visit, TIntermUnary*);
      bool visitSelection(Visit visit, TIntermSelection*);
      bool visitAggregate(Visit visit, TIntermAggregate*);
      bool visitLoop(Visit visit, TIntermLoop*);
      bool visitBranch(Visit visit, TIntermBranch*);
  
      bool isSingleStatement(TIntermNode *node);
      bool handleExcessiveLoop(TIntermLoop *node);
      void outputTriplet(Visit visit, const TString &preString, const TString &inString, const TString &postString);
      TString argumentString(const TIntermSymbol *symbol);
      int vectorSize(const TType &type) const;
  
      void addConstructor(const TType &type, const TString &name, const TIntermSequence *parameters);
      const ConstantUnion *writeConstantUnion(const TType &type, const ConstantUnion *constUnion);
  
      TParseContext &mContext;
      UnfoldSelect *mUnfoldSelect;
      bool mInsideFunction;
  
      // Output streams
      TInfoSinkBase mHeader;
      TInfoSinkBase mBody;
      TInfoSinkBase mFooter;
  
      std::set<std::string> mReferencedUniforms;
      std::set<std::string> mReferencedAttributes;
      std::set<std::string> mReferencedVaryings;
  
      // Parameters determining what goes in the header output
      bool mUsesTexture2D;
      bool mUsesTexture2D_bias;
      bool mUsesTexture2DProj;
      bool mUsesTexture2DProj_bias;
      bool mUsesTextureCube;
      bool mUsesTextureCube_bias;
      bool mUsesFaceforward1;
      bool mUsesFaceforward2;
      bool mUsesFaceforward3;
      bool mUsesFaceforward4;
      bool mUsesEqualMat2;
      bool mUsesEqualMat3;
      bool mUsesEqualMat4;
      bool mUsesEqualVec2;
      bool mUsesEqualVec3;
      bool mUsesEqualVec4;
      bool mUsesEqualIVec2;
      bool mUsesEqualIVec3;
      bool mUsesEqualIVec4;
      bool mUsesEqualBVec2;
      bool mUsesEqualBVec3;
      bool mUsesEqualBVec4;
      bool mUsesAtan2;
  
      struct Constructor   // Describes a constructor signature
      {
          TType type;
          TString name;
  
          typedef std::vector<TType> ParameterArray;
          ParameterArray parameters;
      };
  
      struct CompareConstructor
      {
          bool operator()(const Constructor &x, const Constructor &y) const;
      };
  
      typedef std::set<Constructor, CompareConstructor> ConstructorSet;
      ConstructorSet mConstructors;
  
      typedef std::list<TType> StructureArray;
      StructureArray mStructures;
  
      int mArgumentIndex;   // For creating unique argument names
  };
  }
  
  #endif   // COMPILER_OUTPUTHLSL_H_
  

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