kc3-lang/angle/src/compiler/translator/FlagStd140Structs.cpp

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• Hash : 378c3a51
  Author :
  Date : 2017-12-04T11:32:13
  

  Clean up storing interface blocks in the symbol table
  
  Merge TInterfaceBlock with TInterfaceBlockName, so that there are no
  duplicate data structures for interface blocks. This is similar to the
  refactoring that was already done to structs.
  
  BUG=angleproject:2267
  TEST=angle_unittests
  
  Change-Id: I67d2af6ccbe5344bddf9c99030d118fe532fbbd8
  Reviewed-on: https://chromium-review.googlesource.com/805819
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
  

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• src/compiler/translator/FlagStd140Structs.cpp

• //
  // Copyright (c) 2013 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.
  //
  // FlagStd140Structs.cpp: Find structs in std140 blocks, where the padding added in the translator
  // conflicts with the "natural" unpadded type.
  
  #include "compiler/translator/FlagStd140Structs.h"
  
  #include "compiler/translator/IntermTraverse.h"
  #include "compiler/translator/SymbolTable.h"
  
  namespace sh
  {
  
  namespace
  {
  
  class FlagStd140StructsTraverser : public TIntermTraverser
  {
    public:
      FlagStd140StructsTraverser() : TIntermTraverser(true, false, false) {}
  
      const std::vector<MappedStruct> getMappedStructs() const { return mMappedStructs; }
  
    protected:
      bool visitDeclaration(Visit visit, TIntermDeclaration *node) override;
  
    private:
      void mapBlockStructMembers(TIntermSymbol *blockDeclarator, TInterfaceBlock *block);
  
      std::vector<MappedStruct> mMappedStructs;
  };
  
  void FlagStd140StructsTraverser::mapBlockStructMembers(TIntermSymbol *blockDeclarator,
                                                         TInterfaceBlock *block)
  {
      for (auto *field : block->fields())
      {
          if (field->type()->getBasicType() == EbtStruct)
          {
              MappedStruct mappedStruct;
              mappedStruct.blockDeclarator = blockDeclarator;
              mappedStruct.field           = field;
              mMappedStructs.push_back(mappedStruct);
          }
      }
  }
  
  bool FlagStd140StructsTraverser::visitDeclaration(Visit visit, TIntermDeclaration *node)
  {
      TIntermTyped *declarator = node->getSequence()->back()->getAsTyped();
      if (declarator->getBasicType() == EbtInterfaceBlock)
      {
          TInterfaceBlock *block = declarator->getType().getInterfaceBlock();
          if (block->blockStorage() == EbsStd140)
          {
              mapBlockStructMembers(declarator->getAsSymbolNode(), block);
          }
      }
      return false;
  }
  
  }  // anonymous namespace
  
  std::vector<MappedStruct> FlagStd140Structs(TIntermNode *node)
  {
      FlagStd140StructsTraverser flaggingTraversal;
  
      node->traverse(&flaggingTraversal);
  
      return flaggingTraversal.getMappedStructs();
  }
  
  }  // namespace sh
  

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