kc3-lang/angle/src/compiler/translator/tree_util/ReplaceShadowingVariables.h

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• Hash : 38ff3c70
  Author :
  Date : 2019-05-15T10:07:09
  

  Vulkan:Allow same-named var in nested scope
  
  ESSL 1.00 spec allows for variable with same name to override outer variable
  inside of a nested scope. This change adds new scope to symbol table inside
  of a function defintion, but after function parameters for ESSL 1.00
  shaders (but not webGL). This prevents an error while parsing.
  
  This also includes some new code in translator to rename any vars that are
  redefined between the function body and the function parameters. This
  prevents an error later on when the translated shader is then parsed as
  a desktop GLSL version.
  
  Bug: angleproject:3287
  Change-Id: I3f025805cf8d65bf912283bb15e6dad6e5e9b967
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1601553
  Commit-Queue: Tobin Ehlis <tobine@google.com>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/compiler/translator/tree_util/ReplaceShadowingVariables.h

• //
  // Copyright 2019 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.
  //
  // ReplaceShadowingVariables.h: Find any variables that are redefined within a nested
  // scope and replace them with a newly named variable.
  
  #ifndef COMPILER_TRANSLATOR_TREEUTIL_REPLACESHADOWINGVARIABLES_H_
  #define COMPILER_TRANSLATOR_TREEUTIL_REPLACESHADOWINGVARIABLES_H_
  
  namespace sh
  {
  
  class TIntermBlock;
  class TSymbolTable;
  
  void ReplaceShadowingVariables(TIntermBlock *root, TSymbolTable *symbolTable);
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_TREEUTIL_REPLACESHADOWINGVARIABLES_H_
  

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