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

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• Author : Stuart Morgan
  Date : 2019-08-14 12:25:12
  Hash : 9d737966
  Message : 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>

• src/compiler/translator/BuiltInFunctionEmulator.h

• //
  // Copyright 2011 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_BUILTINFUNCTIONEMULATOR_H_
  #define COMPILER_TRANSLATOR_BUILTINFUNCTIONEMULATOR_H_
  
  #include "compiler/translator/InfoSink.h"
  
  namespace sh
  {
  
  class TIntermNode;
  class TFunction;
  class TSymbolUniqueId;
  
  using BuiltinQueryFunc = const char *(int);
  
  //
  // This class decides which built-in functions need to be replaced with the emulated ones. It can be
  // used to work around driver bugs or implement functions that are not natively implemented on a
  // specific platform.
  //
  class BuiltInFunctionEmulator
  {
    public:
      BuiltInFunctionEmulator();
  
      void markBuiltInFunctionsForEmulation(TIntermNode *root);
  
      void cleanup();
  
      // "name" gets written as "name_emu".
      static void WriteEmulatedFunctionName(TInfoSinkBase &out, const char *name);
  
      bool isOutputEmpty() const;
  
      // Output function emulation definition. This should be before any other shader source.
      void outputEmulatedFunctions(TInfoSinkBase &out) const;
  
      // Add functions that need to be emulated.
      void addEmulatedFunction(const TSymbolUniqueId &uniqueId,
                               const char *emulatedFunctionDefinition);
  
      void addEmulatedFunctionWithDependency(const TSymbolUniqueId &dependency,
                                             const TSymbolUniqueId &uniqueId,
                                             const char *emulatedFunctionDefinition);
  
      void addFunctionMap(BuiltinQueryFunc queryFunc);
  
    private:
      class BuiltInFunctionEmulationMarker;
  
      // Records that a function is called by the shader and might need to be emulated. If the
      // function is not in mEmulatedFunctions, this becomes a no-op. Returns true if the function
      // call needs to be replaced with an emulated one.
      bool setFunctionCalled(const TFunction *function);
      bool setFunctionCalled(int uniqueId);
  
      const char *findEmulatedFunction(int uniqueId) const;
  
      // Map from function unique id to emulated function definition
      std::map<int, std::string> mEmulatedFunctions;
  
      // Map from dependent functions to their dependencies. This structure allows each function to
      // have at most one dependency.
      std::map<int, int> mFunctionDependencies;
  
      // Called function ids
      std::vector<int> mFunctions;
  
      // Constexpr function tables.
      std::vector<BuiltinQueryFunc *> mQueryFunctions;
  };
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_BUILTINFUNCTIONEMULATOR_H_