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

• Show log

  Commit

• Hash : f541f529
  Author :
  Date : 2015-10-13T12:21:01
  

  Fix parsing integers larger than 0x7FFFFFFF
  
  Parsing should accept all values between 0 and 0xFFFFFFFF as specified in
  ESSL 3.00 section 4.1.3.
  
  When a signed literal is parsed, it's interpreted as if it specifies the
  bit pattern of a two's complement integer. For example, parsing
  "0xFFFFFFFF" results in -1. Decimal literals behave the same way, so for
  example parsing "3000000000" results in -1294967296.
  
  This change affects parsing of literals in ESSL 1.00 as well. In ESSL
  3.00, an out-of-range integer literal now generates a compiler error.
  
  Unit tests are added based on examples in the ESSL 3.00 spec and one
  example in GLSL 4.5 spec that ESSL should match.
  
  BUG=541550
  TEST=angle_unittests
  
  Change-Id: I82f8ef5cfa2881019a3f80d77ff99707d61c000d
  Reviewed-on: https://chromium-review.googlesource.com/305420
  Reviewed-by: Zhenyao Mo <zmo@chromium.org>
  Tested-by: Olli Etuaho <oetuaho@nvidia.com>
  Reviewed-by: Corentin Wallez <cwallez@google.com>
  

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 "angle_gl.h"
  #include <GLSLANG/ShaderLang.h>
  
  #include "compiler/translator/Types.h"
  
  // strtof_clamp is like strtof but
  //   1. it forces C locale, i.e. forcing '.' as decimal point.
  //   2. it clamps the value to -FLT_MAX or FLT_MAX if overflow happens.
  // Return false if overflow happens.
  bool strtof_clamp(const std::string &str, float *value);
  
  // 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);
  
  class TSymbolTable;
  
  namespace sh
  {
  
  GLenum GLVariableType(const TType &type);
  GLenum GLVariablePrecision(const TType &type);
  bool IsVaryingIn(TQualifier qualifier);
  bool IsVaryingOut(TQualifier qualifier);
  bool IsVarying(TQualifier qualifier);
  InterpolationType GetInterpolationType(TQualifier qualifier);
  TString ArrayString(const TType &type);
  
  class GetVariableTraverser : angle::NonCopyable
  {
    public:
      GetVariableTraverser(const TSymbolTable &symbolTable);
      virtual ~GetVariableTraverser() {}
  
      template <typename VarT>
      void traverse(const TType &type, const TString &name, std::vector<VarT> *output);
  
    protected:
      // May be overloaded
      virtual void visitVariable(ShaderVariable *newVar) {}
  
    private:
      // Helper function called by traverse() to fill specific fields
      // for attributes/varyings/uniforms.
      template <typename VarT>
      void setTypeSpecificInfo(
          const TType &type, const TString &name, VarT *variable) {}
  
      const TSymbolTable &mSymbolTable;
  };
  
  }
  
  #endif // COMPILER_TRANSLATOR_UTIL_H_
  

Download