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

• Show log

  Commit

• 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>
  

Download

• src/compiler/translator/util.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.
  //
  
  #ifndef COMPILER_TRANSLATOR_UTIL_H_
  #define COMPILER_TRANSLATOR_UTIL_H_
  
  #include <stack>
  
  #include <GLSLANG/ShaderLang.h>
  #include "angle_gl.h"
  
  #include "compiler/translator/HashNames.h"
  #include "compiler/translator/ImmutableString.h"
  #include "compiler/translator/Operator.h"
  #include "compiler/translator/Types.h"
  
  // If overflow happens, clamp the value to UINT_MIN or UINT_MAX.
  // Return false if overflow happens.
  bool atoi_clamp(const char *str, unsigned int *value);
  
  namespace sh
  {
  class TIntermBlock;
  class TSymbolTable;
  class TIntermTyped;
  
  float NumericLexFloat32OutOfRangeToInfinity(const std::string &str);
  
  // strtof_clamp is like strtof but
  //   1. it forces C locale, i.e. forcing '.' as decimal point.
  //   2. it sets the value to infinity if overflow happens.
  //   3. str should be guaranteed to be in the valid format for a floating point number as defined
  //      by the grammar in the ESSL 3.00.6 spec section 4.1.4.
  // Return false if overflow happens.
  bool strtof_clamp(const std::string &str, float *value);
  
  GLenum GLVariableType(const TType &type);
  GLenum GLVariablePrecision(const TType &type);
  bool IsVaryingIn(TQualifier qualifier);
  bool IsVaryingOut(TQualifier qualifier);
  bool IsVarying(TQualifier qualifier);
  bool IsGeometryShaderInput(GLenum shaderType, TQualifier qualifier);
  InterpolationType GetInterpolationType(TQualifier qualifier);
  
  // Returns array brackets including size with outermost array size first, as specified in GLSL ES
  // 3.10 section 4.1.9.
  ImmutableString ArrayString(const TType &type);
  
  ImmutableString GetTypeName(const TType &type, ShHashFunction64 hashFunction, NameMap *nameMap);
  
  TType GetShaderVariableBasicType(const sh::ShaderVariable &var);
  
  void DeclareGlobalVariable(TIntermBlock *root, const TVariable *variable);
  
  bool IsBuiltinOutputVariable(TQualifier qualifier);
  bool IsBuiltinFragmentInputVariable(TQualifier qualifier);
  bool CanBeInvariantESSL1(TQualifier qualifier);
  bool CanBeInvariantESSL3OrGreater(TQualifier qualifier);
  bool IsShaderOutput(TQualifier qualifier);
  bool IsOutputESSL(ShShaderOutput output);
  bool IsOutputGLSL(ShShaderOutput output);
  bool IsOutputHLSL(ShShaderOutput output);
  bool IsOutputVulkan(ShShaderOutput output);
  
  bool IsInShaderStorageBlock(TIntermTyped *node);
  
  GLenum GetImageInternalFormatType(TLayoutImageInternalFormat iifq);
  // ESSL 1.00 shaders nest function body scope within function parameter scope
  bool IsSpecWithFunctionBodyNewScope(ShShaderSpec shaderSpec, int shaderVersion);
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_UTIL_H_
  

Download