Line data    Source code

       1             : //
       2             : // Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
       3             : // Use of this source code is governed by a BSD-style license that can be
       4             : // found in the LICENSE file.
       5             : //
       6             : 
       7             : #ifndef COMPILER_TRANSLATOR_UTIL_H_
       8             : #define COMPILER_TRANSLATOR_UTIL_H_
       9             : 
      10             : #include <stack>
      11             : 
      12             : #include "angle_gl.h"
      13             : #include <GLSLANG/ShaderLang.h>
      14             : 
      15             : #include "compiler/translator/Operator.h"
      16             : #include "compiler/translator/Types.h"
      17             : 
      18             : // If overflow happens, clamp the value to UINT_MIN or UINT_MAX.
      19             : // Return false if overflow happens.
      20             : bool atoi_clamp(const char *str, unsigned int *value);
      21             : 
      22             : namespace sh
      23             : {
      24             : class TSymbolTable;
      25             : 
      26             : float NumericLexFloat32OutOfRangeToInfinity(const std::string &str);
      27             : 
      28             : // strtof_clamp is like strtof but
      29             : //   1. it forces C locale, i.e. forcing '.' as decimal point.
      30             : //   2. it sets the value to infinity if overflow happens.
      31             : //   3. str should be guaranteed to be in the valid format for a floating point number as defined
      32             : //      by the grammar in the ESSL 3.00.6 spec section 4.1.4.
      33             : // Return false if overflow happens.
      34             : bool strtof_clamp(const std::string &str, float *value);
      35             : 
      36             : GLenum GLVariableType(const TType &type);
      37             : GLenum GLVariablePrecision(const TType &type);
      38             : bool IsVaryingIn(TQualifier qualifier);
      39             : bool IsVaryingOut(TQualifier qualifier);
      40             : bool IsVarying(TQualifier qualifier);
      41             : InterpolationType GetInterpolationType(TQualifier qualifier);
      42             : TString ArrayString(const TType &type);
      43             : 
      44             : TType GetShaderVariableBasicType(const sh::ShaderVariable &var);
      45             : 
      46             : TOperator TypeToConstructorOperator(const TType &type);
      47             : 
      48             : class GetVariableTraverser : angle::NonCopyable
      49             : {
      50             :   public:
      51             :     GetVariableTraverser(const TSymbolTable &symbolTable);
      52           0 :     virtual ~GetVariableTraverser() {}
      53             : 
      54             :     template <typename VarT>
      55             :     void traverse(const TType &type, const TString &name, std::vector<VarT> *output);
      56             : 
      57             :   protected:
      58             :     // May be overloaded
      59           0 :     virtual void visitVariable(ShaderVariable *newVar) {}
      60             : 
      61             :   private:
      62             :     // Helper function called by traverse() to fill specific fields
      63             :     // for attributes/varyings/uniforms.
      64             :     template <typename VarT>
      65           0 :     void setTypeSpecificInfo(
      66           0 :         const TType &type, const TString &name, VarT *variable) {}
      67             : 
      68             :     const TSymbolTable &mSymbolTable;
      69             : };
      70             : 
      71             : bool IsBuiltinOutputVariable(TQualifier qualifier);
      72             : bool IsBuiltinFragmentInputVariable(TQualifier qualifier);
      73             : bool CanBeInvariantESSL1(TQualifier qualifier);
      74             : bool CanBeInvariantESSL3OrGreater(TQualifier qualifier);
      75             : }  // namespace sh
      76             : 
      77             : #endif // COMPILER_TRANSLATOR_UTIL_H_