kc3-lang/angle/src/compiler/translator/tree_ops/UseInterfaceBlockFields.cpp

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• Hash : 472c74c6
  Author :
  Date : 2019-08-19T16:32:13
  

  Translator: Allow tree validation in children of TCompiler
  
  This is to be able to perform validation inside TranslatorVulkan, even
  if it's through ASSERTs.
  
  Additionally, every transformation is changed such that they do their
  validation themselves.  TIntermTraverser::updateTree() performs the
  validation, which indirectly validates many of three tree
  transformations.  Some of the more ancient transformations that don't
  use this function directly call TCompiler::validateAST.
  
  Bug: angleproject:2733
  Change-Id: Ie4af029d34e053c5ad1dc8c2c2568eecd625d344
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1761149
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/compiler/translator/tree_ops/UseInterfaceBlockFields.cpp

• //
  // Copyright 2016 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.
  //
  
  // UseInterfaceBlockFields.cpp: insert statements to reference all members in InterfaceBlock list at
  // the beginning of main. This is to work around a Mac driver that treats unused standard/shared
  // uniform blocks as inactive.
  
  #include "compiler/translator/tree_ops/UseInterfaceBlockFields.h"
  
  #include "compiler/translator/Compiler.h"
  #include "compiler/translator/IntermNode.h"
  #include "compiler/translator/SymbolTable.h"
  #include "compiler/translator/tree_util/FindMain.h"
  #include "compiler/translator/tree_util/IntermNode_util.h"
  #include "compiler/translator/util.h"
  
  namespace sh
  {
  
  namespace
  {
  
  void AddNodeUseStatements(TIntermTyped *node, TIntermSequence *sequence)
  {
      if (node->isArray())
      {
          for (unsigned int i = 0u; i < node->getOutermostArraySize(); ++i)
          {
              TIntermBinary *element =
                  new TIntermBinary(EOpIndexDirect, node->deepCopy(), CreateIndexNode(i));
              AddNodeUseStatements(element, sequence);
          }
      }
      else
      {
          sequence->insert(sequence->begin(), node);
      }
  }
  
  void AddFieldUseStatements(const ShaderVariable &var,
                             TIntermSequence *sequence,
                             const TSymbolTable &symbolTable)
  {
      ASSERT(var.name.find_last_of('[') == std::string::npos);
      TIntermSymbol *symbol = ReferenceGlobalVariable(ImmutableString(var.name), symbolTable);
      AddNodeUseStatements(symbol, sequence);
  }
  
  void InsertUseCode(const InterfaceBlock &block, TIntermTyped *blockNode, TIntermSequence *sequence)
  {
      for (unsigned int i = 0; i < block.fields.size(); ++i)
      {
          TIntermBinary *element = new TIntermBinary(EOpIndexDirectInterfaceBlock,
                                                     blockNode->deepCopy(), CreateIndexNode(i));
          sequence->insert(sequence->begin(), element);
      }
  }
  
  void InsertUseCode(TIntermSequence *sequence,
                     const InterfaceBlockList &blocks,
                     const TSymbolTable &symbolTable)
  {
      for (const auto &block : blocks)
      {
          if (block.instanceName.empty())
          {
              for (const auto &var : block.fields)
              {
                  AddFieldUseStatements(var, sequence, symbolTable);
              }
          }
          else if (block.arraySize > 0u)
          {
              TIntermSymbol *arraySymbol =
                  ReferenceGlobalVariable(ImmutableString(block.instanceName), symbolTable);
              for (unsigned int i = 0u; i < block.arraySize; ++i)
              {
                  TIntermBinary *elementSymbol =
                      new TIntermBinary(EOpIndexDirect, arraySymbol->deepCopy(), CreateIndexNode(i));
                  InsertUseCode(block, elementSymbol, sequence);
              }
          }
          else
          {
              TIntermSymbol *blockSymbol =
                  ReferenceGlobalVariable(ImmutableString(block.instanceName), symbolTable);
              InsertUseCode(block, blockSymbol, sequence);
          }
      }
  }
  
  }  // namespace
  
  bool UseInterfaceBlockFields(TCompiler *compiler,
                               TIntermBlock *root,
                               const InterfaceBlockList &blocks,
                               const TSymbolTable &symbolTable)
  {
      TIntermBlock *mainBody = FindMainBody(root);
      InsertUseCode(mainBody->getSequence(), blocks, symbolTable);
  
      return compiler->validateAST(root);
  }
  
  }  // namespace sh
  

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