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

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• Author : zmo@google.com
  Date : 2011-05-27 17:40:48
  Hash : 24c08c4e
  Message : Fix the bug that long varying varibales are mapped into different names in fragment/vertex shaders. ANGLEBUG=144 TEST=the same long varying variable name in fragment/vertex shaders map to the same shortened name if using the same translator. Review URL: http://codereview.appspot.com/4547063 git-svn-id: https://angleproject.googlecode.com/svn/trunk@660 736b8ea6-26fd-11df-bfd4-992fa37f6226

• src/compiler/MapLongVariableNames.h

• //
  // Copyright (c) 2002-2011 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.
  //
  
  #ifndef COMPILER_MAP_LONG_VARIABLE_NAMES_H_
  #define COMPILER_MAP_LONG_VARIABLE_NAMES_H_
  
  #include "GLSLANG/ShaderLang.h"
  
  #include "compiler/intermediate.h"
  #include "compiler/VariableInfo.h"
  
  // This size does not include '\0' in the end.
  #define MAX_IDENTIFIER_NAME_SIZE 32
  
  // Traverses intermediate tree to map attributes and uniforms names that are
  // longer than MAX_IDENTIFIER_NAME_SIZE to MAX_IDENTIFIER_NAME_SIZE.
  class MapLongVariableNames : public TIntermTraverser {
  public:
      MapLongVariableNames(TMap<TString, TString>& varyingLongNameMap);
  
      virtual void visitSymbol(TIntermSymbol*);
      virtual void visitConstantUnion(TIntermConstantUnion*);
      virtual bool visitBinary(Visit, TIntermBinary*);
      virtual bool visitUnary(Visit, TIntermUnary*);
      virtual bool visitSelection(Visit, TIntermSelection*);
      virtual bool visitAggregate(Visit, TIntermAggregate*);
      virtual bool visitLoop(Visit, TIntermLoop*);
      virtual bool visitBranch(Visit, TIntermBranch*);
  
  private:
      TString mapVaryingLongName(const TString& name);
  
      TMap<TString, TString>& mVaryingLongNameMap;
  };
  
  #endif  // COMPILER_MAP_LONG_VARIABLE_NAMES_H_