kc3-lang/angle/src/compiler/translator/InitializeVariables.h

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• Hash : daaff1cc
  Author :
  Date : 2017-07-05T18:03:26
  

  Set correct symbol ids when referring to GLSL built-ins
  
  The symbol ids are fetched from the symbol table. A new utility
  function is added to make this more convenient.
  
  BUG=angleproject:1490
  TEST=angle_unittests, angle_end2end_tests
  
  Change-Id: I780430e3386f6599503d8290c568ca9bc9cad147
  Reviewed-on: https://chromium-review.googlesource.com/559535
  Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/compiler/translator/InitializeVariables.h

• //
  // Copyright (c) 2002-2013 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_TRANSLATOR_INITIALIZEVARIABLES_H_
  #define COMPILER_TRANSLATOR_INITIALIZEVARIABLES_H_
  
  #include <GLSLANG/ShaderLang.h>
  
  #include "compiler/translator/ExtensionBehavior.h"
  #include "compiler/translator/IntermNode.h"
  
  namespace sh
  {
  class TSymbolTable;
  
  typedef std::vector<sh::ShaderVariable> InitVariableList;
  
  // Return a sequence of assignment operations to initialize "initializedSymbol". initializedSymbol
  // may be an array, struct or any combination of these, as long as it contains only basic types.
  TIntermSequence *CreateInitCode(const TIntermTyped *initializedSymbol);
  
  // Initialize all uninitialized local variables, so that undefined behavior is avoided.
  void InitializeUninitializedLocals(TIntermBlock *root, int shaderVersion);
  
  // This function can initialize all the types that CreateInitCode is able to initialize. All
  // variables must be globals which can be found in the symbol table. For now it is used for the
  // following two scenarios:
  //   1. Initializing gl_Position;
  //   2. Initializing output variables referred to in the shader source.
  // Note: The type of each lvalue in an initializer is retrieved from the symbol table. gl_FragData
  // requires special handling because the number of indices which can be initialized is determined by
  // enabled extensions.
  void InitializeVariables(TIntermBlock *root,
                           const InitVariableList &vars,
                           const TSymbolTable &symbolTable,
                           int shaderVersion,
                           const TExtensionBehavior &extensionBehavior);
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_INITIALIZEVARIABLES_H_
  

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