OpenWalnut
1.4.0
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00001 //--------------------------------------------------------------------------- 00002 // 00003 // Project: OpenWalnut ( http://www.openwalnut.org ) 00004 // 00005 // Copyright 2009 OpenWalnut Community, BSV@Uni-Leipzig and CNCF@MPI-CBS 00006 // For more information see http://www.openwalnut.org/copying 00007 // 00008 // This file is part of OpenWalnut. 00009 // 00010 // OpenWalnut is free software: you can redistribute it and/or modify 00011 // it under the terms of the GNU Lesser General Public License as published by 00012 // the Free Software Foundation, either version 3 of the License, or 00013 // (at your option) any later version. 00014 // 00015 // OpenWalnut is distributed in the hope that it will be useful, 00016 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00018 // GNU Lesser General Public License for more details. 00019 // 00020 // You should have received a copy of the GNU Lesser General Public License 00021 // along with OpenWalnut. If not, see <http://www.gnu.org/licenses/>. 00022 // 00023 //--------------------------------------------------------------------------- 00024 00025 #ifndef WGESHADERCODEINJECTOR_H 00026 #define WGESHADERCODEINJECTOR_H 00027 00028 #include <string> 00029 00030 #include "WGEShaderPreprocessor.h" 00031 00032 00033 00034 /** 00035 * This preprocessor is able to inject code into a shader. It therefore replaces a specified keyword with code. 00036 */ 00037 class WGEShaderCodeInjector: public WGEShaderPreprocessor 00038 { 00039 public: 00040 /** 00041 * Shortcut for a shared_ptr. 00042 */ 00043 typedef boost::shared_ptr< WGEShaderCodeInjector > SPtr; 00044 00045 /** 00046 * Shortcut for a const shared_ptr. 00047 */ 00048 typedef boost::shared_ptr< WGEShaderCodeInjector > ConstSPtr; 00049 00050 /** 00051 * Default constructor. 00052 * 00053 * \param keyword this is replaced by the custom code if existing. 00054 */ 00055 explicit WGEShaderCodeInjector( std::string keyword ); 00056 00057 /** 00058 * Destructor. 00059 */ 00060 virtual ~WGEShaderCodeInjector(); 00061 00062 /** 00063 * Process the whole code. It is not allowed to modify some internal state in this function because it might be called by several shaders. 00064 * 00065 * \param code the code to process 00066 * \param file the filename of the shader currently processed. Should be used for debugging output. 00067 * 00068 * \return the resulting new code 00069 */ 00070 virtual std::string process( const std::string& file, const std::string& code ) const; 00071 00072 /** 00073 * Define the code that replaces the keyword. 00074 * 00075 * \param code the code. 00076 */ 00077 void setCode( std::string code ); 00078 protected: 00079 private: 00080 /** 00081 * the custom code. 00082 */ 00083 std::string m_code; 00084 00085 /** 00086 * What to replace. 00087 */ 00088 std::string m_keyword; 00089 }; 00090 00091 #endif // WGESHADERCODEINJECTOR_H 00092