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

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• Hash : 249cb200
  Author :
  Date : 2019-12-03T11:10:06
  

  Translator: Rename TIntermInvariantDeclaration to ..GlobalQualifier..
  
  This is to support the upcoming `precise` keyword.
  
  Bug: angleproject:3569
  Change-Id: Idbcc8fd6f261757dbbf81b381e7a2dae938d8101
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1947451
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/compiler/translator/tree_ops/RemoveInvariantDeclaration.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.
  //
  
  #include "compiler/translator/tree_ops/RemoveInvariantDeclaration.h"
  
  #include "compiler/translator/tree_util/IntermTraverse.h"
  
  namespace sh
  {
  
  namespace
  {
  
  // An AST traverser that removes invariant declaration for input in fragment shader
  // when GLSL >= 4.20 and for output in vertex shader when GLSL < 4.2.
  class RemoveInvariantDeclarationTraverser : public TIntermTraverser
  {
    public:
      RemoveInvariantDeclarationTraverser() : TIntermTraverser(true, false, false) {}
  
    private:
      bool visitGlobalQualifierDeclaration(Visit visit,
                                           TIntermGlobalQualifierDeclaration *node) override
      {
          TIntermSequence emptyReplacement;
          mMultiReplacements.push_back(
              NodeReplaceWithMultipleEntry(getParentNode()->getAsBlock(), node, emptyReplacement));
          return false;
      }
  };
  
  }  // anonymous namespace
  
  bool RemoveInvariantDeclaration(TCompiler *compiler, TIntermNode *root)
  {
      RemoveInvariantDeclarationTraverser traverser;
      root->traverse(&traverser);
      return traverser.updateTree(compiler, root);
  }
  
  }  // namespace sh
  

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