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

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• Hash : f0d10f89
  Author :
  Date : 2015-03-31T12:56:52
  

  Replace non-copyable macro with a helper class.
  
  This class provides a simpler scheme for blocking default copy
  and assignment operators. It also reduces the amount of code
  needed since it's inherited to child classes. This also fixes
  the conflict between our macro and the same-named macro in
  Chromium code.
  
  BUG=angleproject:956
  
  Change-Id: If0dc72aa3f63fbc7b8fa34907418821c64c39e2f
  Reviewed-on: https://chromium-review.googlesource.com/263257
  Tested-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Brandon Jones <bajones@chromium.org>
  

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• src/compiler/translator/EmulatePrecision.h

• //
  // Copyright (c) 2002-2014 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_EMULATE_PRECISION_H_
  #define COMPILER_TRANSLATOR_EMULATE_PRECISION_H_
  
  #include "common/angleutils.h"
  #include "compiler/translator/InfoSink.h"
  #include "compiler/translator/IntermNode.h"
  #include "GLSLANG/ShaderLang.h"
  
  // This class gathers all compound assignments from the AST and can then write
  // the functions required for their precision emulation. This way there is no
  // need to write a huge number of variations of the emulated compound assignment
  // to every translated shader with emulation enabled.
  
  class EmulatePrecision : public TIntermTraverser
  {
    public:
      EmulatePrecision();
  
      virtual void visitSymbol(TIntermSymbol *node);
      virtual bool visitBinary(Visit visit, TIntermBinary *node);
      virtual bool visitUnary(Visit visit, TIntermUnary *node);
      virtual bool visitAggregate(Visit visit, TIntermAggregate *node);
  
      void writeEmulationHelpers(TInfoSinkBase& sink, ShShaderOutput outputLanguage);
  
    private:
      struct TypePair
      {
          TypePair(const char *l, const char *r)
              : lType(l), rType(r) { }
  
          const char *lType;
          const char *rType;
      };
  
      struct TypePairComparator
      {
          bool operator() (const TypePair& l, const TypePair& r) const
          {
              if (l.lType == r.lType)
                  return l.rType < r.rType;
              return l.lType < r.lType;
          }
      };
  
      typedef std::set<TypePair, TypePairComparator> EmulationSet;
      EmulationSet mEmulateCompoundAdd;
      EmulationSet mEmulateCompoundSub;
      EmulationSet mEmulateCompoundMul;
      EmulationSet mEmulateCompoundDiv;
  
      // Stack of function call parameter iterators
      std::vector<TIntermSequence::const_iterator> mSeqIterStack;
  
      bool mDeclaringVariables;
      bool mInLValue;
      bool mInFunctionCallOutParameter;
  
      struct TStringComparator
      {
          bool operator() (const TString& a, const TString& b) const { return a.compare(b) < 0; }
      };
  
      // Map from function names to their parameter sequences
      std::map<TString, TIntermSequence*, TStringComparator> mFunctionMap;
  };
  
  #endif  // COMPILER_TRANSLATOR_EMULATE_PRECISION_H_
  

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