1 // 2 // Copyright (c) 2002-2011 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_VARIABLE_INFO_H_ 8 #define COMPILER_VARIABLE_INFO_H_ 9 10 #include "GLSLANG/ShaderLang.h" 11 #include "compiler/intermediate.h" 12 13 // Provides information about a variable. 14 // It is currently being used to store info about active attribs and uniforms. 15 struct TVariableInfo { 16 TVariableInfo(ShDataType type, int size); 17 TVariableInfo(); 18 19 TPersistString name; 20 TPersistString mappedName; 21 ShDataType type; 22 int size; 23 TPrecision precision; 24 bool staticUse; 25 }; 26 typedef std::vector<TVariableInfo> TVariableInfoList; 27 28 // Traverses intermediate tree to collect all attributes, uniforms, varyings. 29 class CollectVariables : public TIntermTraverser { 30 public: 31 CollectVariables(TVariableInfoList& attribs, 32 TVariableInfoList& uniforms, 33 TVariableInfoList& varyings, 34 ShHashFunction64 hashFunction); 35 36 virtual void visitSymbol(TIntermSymbol*); 37 virtual bool visitAggregate(Visit, TIntermAggregate*); 38 39 private: 40 TVariableInfoList& mAttribs; 41 TVariableInfoList& mUniforms; 42 TVariableInfoList& mVaryings; 43 44 bool mPointCoordAdded; 45 bool mFrontFacingAdded; 46 bool mFragCoordAdded; 47 48 ShHashFunction64 mHashFunction; 49 }; 50 51 #endif // COMPILER_VARIABLE_INFO_H_ 52