kc3-lang/angle/src/compiler/UnfoldSelect.h

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• Hash : bdfb2e50
  Author :
  Date : 2010-11-15T16:41:20
  

  Only initialize through a temporary variable if the same symbol name is used in the initialization expression.
  TRAC #13627
  The previous patch can generate a lot of unnecessary temporary variables. By first checking whether the same symbol name is reused the clutter is reduced to an absolute minimum (typical shaders won't rely on this odd GLSL semantic behavior so the workaround is hardly ever needed).
  Signed-off-by: Daniel Koch
  
  Author:    Nicolas Capens
  
  git-svn-id: https://angleproject.googlecode.com/svn/trunk@479 736b8ea6-26fd-11df-bfd4-992fa37f6226
  

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• src/compiler/UnfoldSelect.h

• //
  // Copyright (c) 2002-2010 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.
  //
  // UnfoldSelect is an AST traverser to output the select operator ?: as if-else statements
  //
  
  #ifndef COMPILER_UNFOLDSELECT_H_
  #define COMPILER_UNFOLDSELECT_H_
  
  #include "compiler/intermediate.h"
  #include "compiler/ParseHelper.h"
  
  namespace sh
  {
  class OutputHLSL;
  
  class UnfoldSelect : public TIntermTraverser
  {
    public:
      UnfoldSelect(TParseContext &context, OutputHLSL *outputHLSL);
  
      void traverse(TIntermNode *node);
      bool visitSelection(Visit visit, TIntermSelection *node);
  
      int getTemporaryIndex();
  
    protected:
      TParseContext &mContext;
      OutputHLSL *const mOutputHLSL;
  
      int mTemporaryIndex;
  };
  }
  
  #endif   // COMPILER_UNFOLDSELECT_H_
  

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