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_UTIL_H 8 #define COMPILER_UTIL_H 9 10 #include <stack> 11 12 #include "angle_gl.h" 13 #include <GLSLANG/ShaderLang.h> 14 15 #include "compiler/translator/Types.h" 16 17 // atof_clamp is like atof but 18 // 1. it forces C locale, i.e. forcing '.' as decimal point. 19 // 2. it clamps the value to -FLT_MAX or FLT_MAX if overflow happens. 20 // Return false if overflow happens. 21 extern bool atof_clamp(const char *str, float *value); 22 23 // If overflow happens, clamp the value to INT_MIN or INT_MAX. 24 // Return false if overflow happens. 25 extern bool atoi_clamp(const char *str, int *value); 26 27 namespace sh 28 { 29 30 GLenum GLVariableType(const TType &type); 31 GLenum GLVariablePrecision(const TType &type); 32 bool IsVaryingIn(TQualifier qualifier); 33 bool IsVaryingOut(TQualifier qualifier); 34 bool IsVarying(TQualifier qualifier); 35 InterpolationType GetInterpolationType(TQualifier qualifier); 36 TString ArrayString(const TType &type); 37 38 class GetVariableTraverser 39 { 40 public: GetVariableTraverser()41 GetVariableTraverser() {} 42 43 template <typename VarT> 44 void traverse(const TType &type, const TString &name, std::vector<VarT> *output); 45 46 protected: 47 // May be overloaded visitVariable(ShaderVariable * newVar)48 virtual void visitVariable(ShaderVariable *newVar) {} 49 50 private: 51 DISALLOW_COPY_AND_ASSIGN(GetVariableTraverser); 52 }; 53 54 } 55 56 #endif // COMPILER_UTIL_H 57