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

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• Hash : 9d737966
  Author :
  Date : 2019-08-14T12:25:12
  

  Standardize copyright notices to project style
  
  For all "ANGLE Project" copyrights, standardize to the format specified
  by the style guide. Changes:
  - "Copyright (c)" and "Copyright(c)" changed to just "Copyright".
  - Removed the second half of date ranges ("Y1Y1-Y2Y2"->"Y1Y1").
  - Fixed a small number of files that had no copyright date using the
    initial commit year from the version control history.
  - Fixed one instance of copyright being "The ANGLE Project" rather than
    "The ANGLE Project Authors"
  
  These changes are applied both to the copyright of source file, and
  where applicable to copyright statements that are generated by
  templates.
  
  BUG=angleproject:3811
  
  Change-Id: I973dd65e4ef9deeba232d5be74c768256a0eb2e5
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1754397
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/compiler/translator/tree_ops/EmulatePrecision.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_TREEOPS_EMULATE_PRECISION_H_
  #define COMPILER_TRANSLATOR_TREEOPS_EMULATE_PRECISION_H_
  
  #include "GLSLANG/ShaderLang.h"
  #include "common/angleutils.h"
  #include "compiler/translator/Compiler.h"
  #include "compiler/translator/InfoSink.h"
  #include "compiler/translator/tree_util/IntermTraverse.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.
  
  namespace sh
  {
  
  class EmulatePrecision : public TLValueTrackingTraverser
  {
    public:
      EmulatePrecision(TSymbolTable *symbolTable);
  
      void visitSymbol(TIntermSymbol *node) override;
      bool visitBinary(Visit visit, TIntermBinary *node) override;
      bool visitUnary(Visit visit, TIntermUnary *node) override;
      bool visitAggregate(Visit visit, TIntermAggregate *node) override;
      bool visitInvariantDeclaration(Visit visit, TIntermInvariantDeclaration *node) override;
      bool visitDeclaration(Visit visit, TIntermDeclaration *node) override;
  
      void writeEmulationHelpers(TInfoSinkBase &sink,
                                 const int shaderVersion,
                                 const ShShaderOutput outputLanguage);
  
      static bool SupportedInLanguage(const 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;
          }
      };
  
      const TFunction *getInternalFunction(const ImmutableString &functionName,
                                           const TType &returnType,
                                           TIntermSequence *arguments,
                                           const TVector<const TVariable *> &parameters,
                                           bool knownToNotHaveSideEffects);
      TIntermAggregate *createRoundingFunctionCallNode(TIntermTyped *roundedChild);
      TIntermAggregate *createCompoundAssignmentFunctionCallNode(TIntermTyped *left,
                                                                 TIntermTyped *right,
                                                                 const char *opNameStr);
  
      typedef std::set<TypePair, TypePairComparator> EmulationSet;
      EmulationSet mEmulateCompoundAdd;
      EmulationSet mEmulateCompoundSub;
      EmulationSet mEmulateCompoundMul;
      EmulationSet mEmulateCompoundDiv;
  
      // Map from mangled name to function.
      TMap<ImmutableString, const TFunction *> mInternalFunctions;
  
      bool mDeclaringVariables;
  };
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_TREEOPS_EMULATE_PRECISION_H_
  

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