1 // 2 // Copyright (c) 2002-2013 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_INITIALIZE_GL_POSITION_H_ 8 #define COMPILER_INITIALIZE_GL_POSITION_H_ 9 10 #include "compiler/intermediate.h" 11 12 class InitializeGLPosition : public TIntermTraverser 13 { 14 public: InitializeGLPosition()15 InitializeGLPosition() : mCodeInserted(false) { } 16 17 protected: visitBinary(Visit visit,TIntermBinary * node)18 virtual bool visitBinary(Visit visit, TIntermBinary* node) { return false; } visitUnary(Visit visit,TIntermUnary * node)19 virtual bool visitUnary(Visit visit, TIntermUnary* node) { return false; } visitSelection(Visit visit,TIntermSelection * node)20 virtual bool visitSelection(Visit visit, TIntermSelection* node) { return false; } visitLoop(Visit visit,TIntermLoop * node)21 virtual bool visitLoop(Visit visit, TIntermLoop* node) { return false; } visitBranch(Visit visit,TIntermBranch * node)22 virtual bool visitBranch(Visit visit, TIntermBranch* node) { return false; } 23 24 virtual bool visitAggregate(Visit visit, TIntermAggregate* node); 25 26 private: 27 // Insert AST node in the beginning of main() for "gl_Position = vec4(0.0, 0.0, 0.0, 1.0);". 28 void insertCode(TIntermSequence& sequence); 29 30 bool mCodeInserted; 31 }; 32 33 #endif // COMPILER_INITIALIZE_GL_POSITION_H_ 34