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

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• Hash : 09b04a2f
  Author :
  Date : 2016-12-15T13:30:26
  

  Add shader translator support for OVR_multiview
  
  The OVR_multiview and OVR_multiview2 extensions add gl_ViewID_OVR to
  shaders. gl_ViewID_OVR can be translated either as is in GLSL output
  or as a uniform by setting the SH_TRANSLATE_VIEWID_OVR_AS_UNIFORM
  compiler flag.
  
  If WebGL output is selected, the shaders will be validated according
  to proposed rules in the WEBGL_multiview spec.
  
  BUG=angleproject:1669
  TEST=angle_unittests
  
  Change-Id: I19ea3a6c8b4edb78be03f1a50a96bfef018870d0
  Reviewed-on: https://chromium-review.googlesource.com/422848
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
  

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• src/compiler/translator/FindSymbolNode.cpp

• //
  // Copyright (c) 2015 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.
  //
  // FindSymbol.cpp:
  //     Utility for finding a symbol node inside an AST tree.
  
  #include "compiler/translator/FindSymbolNode.h"
  
  #include "compiler/translator/IntermNode.h"
  
  namespace sh
  {
  
  namespace
  {
  
  class SymbolFinder : public TIntermTraverser
  {
    public:
      SymbolFinder(const TString &symbolName, TBasicType basicType)
          : TIntermTraverser(true, false, false),
            mSymbolName(symbolName),
            mNodeFound(nullptr),
            mBasicType(basicType)
      {
      }
  
      void visitSymbol(TIntermSymbol *node)
      {
          if (node->getBasicType() == mBasicType && node->getSymbol() == mSymbolName)
          {
              mNodeFound = node;
          }
      }
  
      bool isFound() const { return mNodeFound != nullptr; }
      const TIntermSymbol *getNode() const { return mNodeFound; }
  
    private:
      TString mSymbolName;
      TIntermSymbol *mNodeFound;
      TBasicType mBasicType;
  };
  
  }  // anonymous namespace
  
  const TIntermSymbol *FindSymbolNode(TIntermNode *root,
                                      const TString &symbolName,
                                      TBasicType basicType)
  {
      SymbolFinder finder(symbolName, basicType);
      root->traverse(&finder);
      return finder.getNode();
  }
  
  }  // namespace sh
  

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