kc3-lang/angle/src/compiler/translator/TranslatorMetalDirect/RewriteGlobalQualifierDecls.h

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• Author : Kyle Piddington
  Date : 2021-04-26 16:56:15
  Hash : d7aa0130
  Message : Upstream Apple's direct-to-Metal backend: compile translator. This change is meant to merge the translator changes from Apple's direct-to-Metal backend. Taken from Kyle Piddington's CL: https://chromium-review.googlesource.com/c/angle/angle/+/2857366/ The goal of this CL is to merge the translator code in a state that compiles, but not to switch the Metal backend over to use this translator backend yet. Bug: angleproject:5505 Change-Id: I68a6354604498cd5fd1eb96c13fc56f3b38f2bd0 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2897536 Reviewed-by: Jonah Ryan-Davis <jonahr@google.com> Commit-Queue: Jonah Ryan-Davis <jonahr@google.com>

• src/compiler/translator/TranslatorMetalDirect/RewriteGlobalQualifierDecls.h

• //
  // Copyright 2020 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_TRANSLATORMETALDIRECT_REWRITEGLOBALQUALIFIERDECLS_H_
  #define COMPILER_TRANSLATOR_TRANSLATORMETALDIRECT_REWRITEGLOBALQUALIFIERDECLS_H_
  
  #include <unordered_set>
  
  #include "compiler/translator/Compiler.h"
  
  namespace sh
  {
  
  // Tracks TVariables and TFields that are marked as "invariant".
  class Invariants
  {
    public:
      void insert(const TVariable &var) { mInvariants.insert(&var); }
  
      void insert(const TField &field) { mInvariants.insert(&field); }
  
      bool contains(const TVariable &var) const
      {
          return mInvariants.find(&var) != mInvariants.end();
      }
  
      bool contains(const TField &field) const
      {
          return mInvariants.find(&field) != mInvariants.end();
      }
  
    private:
      std::unordered_set<const void *> mInvariants;
  };
  
  // This rewrites TIntermGlobalQualifierDeclarations as TIntermDeclarations.
  // `outInvariants` is populated with the information that would otherwise be lost by such a
  // transform.
  ANGLE_NO_DISCARD bool RewriteGlobalQualifierDecls(TCompiler &compiler,
                                                    TIntermBlock &root,
                                                    Invariants &outInvariants);
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_TRANSLATORMETALDIRECT_REWRITEGLOBALQUALIFIERDECLS_H_