# OgreRenderSystemCapabilitiesSerializer.h

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    00001 /*
    00002 -----------------------------------------------------------------------------
    00003 This source file is part of OGRE
    00004     (Object-oriented Graphics Rendering Engine)
    00005 For the latest info, see http://www.ogre3d.org/
    00006
    00007 Copyright (c) 2000-2009 Torus Knot Software Ltd
    00008
    00009 Permission is hereby granted, free of charge, to any person obtaining a copy
    00010 of this software and associated documentation files (the "Software"), to deal
    00011 in the Software without restriction, including without limitation the rights
    00012 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    00013 copies of the Software, and to permit persons to whom the Software is
    00014 furnished to do so, subject to the following conditions:
    00015
    00016 The above copyright notice and this permission notice shall be included in
    00017 all copies or substantial portions of the Software.
    00018
    00019 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    00020 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    00021 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    00022 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    00023 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    00024 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    00025 THE SOFTWARE.
    00026 -----------------------------------------------------------------------------
    00027 */
    00028 #ifndef __RenderSystemCapabilitiesSerializer_H__
    00029 #define __RenderSystemCapabilitiesSerializer_H__
    00030
    00031 #include "OgrePrerequisites.h"
    00032 #include "OgreRenderSystemCapabilities.h"
    00033 #include "OgreStringVector.h"
    00034 #include "OgreDataStream.h"
    00035
    00036
    00037
    00038 namespace Ogre {
    00039
    00040
    00048     class _OgreExport RenderSystemCapabilitiesSerializer : public RenderSysAlloc
    00049     {
    00050
    00051     public:
    00053         RenderSystemCapabilitiesSerializer();
    00055         virtual ~RenderSystemCapabilitiesSerializer() {}
    00056
    00058         void writeScript(const RenderSystemCapabilities* caps, String name, String filename);
    00059
    00063         void parseScript(DataStreamPtr& stream);
    00064
    00065     protected:
    00066
    00067
    00068         enum CapabilityKeywordType {UNDEFINED_CAPABILITY_TYPE = 0, SET_STRING_METHOD, SET_INT_METHOD, SET_BOOL_METHOD, SET_REAL_METHOD,
    00069                                 SET_CAPABILITY_ENUM_BOOL, ADD_SHADER_PROFILE_STRING};
    00070         // determines what keyword is what type of capability. For example:
    00071         // "automipmap" and "pbuffer" are both activated with setCapability (passing RSC_AUTOMIPMAP and RSC_PBUFFER respectivelly)
    00072         // while "max_num_multi_render_targets" is an integer and has it's own method: setMaxMultiNumRenderTargets
    00073         // we need to know these types to automatically parse each capability
    00074         typedef map<String, CapabilityKeywordType>::type KeywordTypeMap;
    00075         KeywordTypeMap mKeywordTypeMap;
    00076
    00077         typedef void (RenderSystemCapabilities::*SetStringMethod)(const String&);
    00078         // maps capability keywords to setCapability(String& cap) style methods
    00079         typedef map<String, SetStringMethod>::type SetStringMethodDispatchTable;
    00080         SetStringMethodDispatchTable mSetStringMethodDispatchTable;
    00081
    00082         // SET_INT_METHOD parsing tables
    00083         typedef void (RenderSystemCapabilities::*SetIntMethod)(ushort);
    00084         typedef map<String, SetIntMethod>::type SetIntMethodDispatchTable;
    00085         SetIntMethodDispatchTable mSetIntMethodDispatchTable;
    00086
    00087         // SET_BOOL_METHOD parsing tables
    00088         typedef void (RenderSystemCapabilities::*SetBoolMethod)(bool);
    00089         typedef map<String, SetBoolMethod>::type SetBoolMethodDispatchTable;
    00090         SetBoolMethodDispatchTable mSetBoolMethodDispatchTable;
    00091
    00092         // SET_REAL_METHOD parsing tables
    00093         typedef void (RenderSystemCapabilities::*SetRealMethod)(Real);
    00094         typedef map<String, SetRealMethod>::type SetRealMethodDispatchTable;
    00095         SetRealMethodDispatchTable mSetRealMethodDispatchTable;
    00096
    00097         typedef map<String, Capabilities>::type CapabilitiesMap;
    00098         CapabilitiesMap mCapabilitiesMap;
    00099
    00100         inline void addCapabilitiesMapping(String name, Capabilities cap)
    00101         {
    00102             mCapabilitiesMap.insert(CapabilitiesMap::value_type(name, cap));
    00103         }
    00104
    00105
    00106         // capabilities lines for parsing are collected along with their line numbers for debugging
    00107         typedef vector<std::pair<String, int> >::type CapabilitiesLinesList;
    00108         // the set of states that the parser can be in
    00109         enum ParseAction {PARSE_HEADER, FIND_OPEN_BRACE, COLLECT_LINES};
    00110
    00111         int mCurrentLineNumber;
    00112         String* mCurrentLine;
    00113         DataStreamPtr mCurrentStream;
    00114
    00115         RenderSystemCapabilities* mCurrentCapabilities;
    00116
    00117         inline void addKeywordType(String keyword, CapabilityKeywordType type)
    00118         {
    00119             mKeywordTypeMap.insert(KeywordTypeMap::value_type(keyword, type));
    00120         }
    00121
    00122         inline CapabilityKeywordType getKeywordType(const String& keyword) const
    00123         {
    00124                         KeywordTypeMap::const_iterator it = mKeywordTypeMap.find(keyword);
    00125             if(it != mKeywordTypeMap.end())
    00126                              return (*it).second;
    00127                         else
    00128                         {
    00129                              logParseError("Can't find the type for keyword: " + keyword);
    00130                              return UNDEFINED_CAPABILITY_TYPE;
    00131                         }
    00132         }
    00133
    00134         inline void addSetStringMethod(String keyword, SetStringMethod method)
    00135         {
    00136             mSetStringMethodDispatchTable.insert(SetStringMethodDispatchTable::value_type(keyword, method));
    00137         }
    00138
    00139         inline void callSetStringMethod(String& keyword, String& val)
    00140         {
    00141             SetStringMethodDispatchTable::iterator methodIter = mSetStringMethodDispatchTable.find(keyword);
    00142             if (methodIter != mSetStringMethodDispatchTable.end())
    00143             {
    00144                             SetStringMethod m = (*methodIter).second;
    00145                 (mCurrentCapabilities->*m)(val);
    00146             }
    00147             else
    00148             {
    00149                 logParseError("undefined keyword: " + keyword);
    00150             }
    00151         }
    00152
    00153
    00154         inline void addSetIntMethod(String keyword, SetIntMethod method)
    00155         {
    00156             mSetIntMethodDispatchTable.insert(SetIntMethodDispatchTable::value_type(keyword, method));
    00157         }
    00158
    00159         inline void callSetIntMethod(String& keyword, ushort val)
    00160         {
    00161             SetIntMethodDispatchTable::iterator methodIter = mSetIntMethodDispatchTable.find(keyword);
    00162             if (methodIter != mSetIntMethodDispatchTable.end())
    00163             {
    00164                             SetIntMethod m = (*methodIter).second;
    00165                 (mCurrentCapabilities->*m)(val);
    00166             }
    00167             else
    00168             {
    00169                 logParseError("undefined keyword: " + keyword);
    00170             }
    00171         }
    00172
    00173
    00174         inline void addSetBoolMethod(String keyword, SetBoolMethod method)
    00175         {
    00176             mSetBoolMethodDispatchTable.insert(SetBoolMethodDispatchTable::value_type(keyword, method));
    00177         }
    00178
    00179         inline void callSetBoolMethod(String& keyword, bool val)
    00180         {
    00181             SetBoolMethodDispatchTable::iterator methodIter = mSetBoolMethodDispatchTable.find(keyword);
    00182             if (methodIter != mSetBoolMethodDispatchTable.end())
    00183             {
    00184                             SetBoolMethod m = (*methodIter).second;
    00185                 (mCurrentCapabilities->*m)(val);
    00186             }
    00187             else
    00188             {
    00189                 logParseError("undefined keyword: " + keyword);
    00190                         }
    00191         }
    00192
    00193
    00194         inline void addSetRealMethod(String keyword, SetRealMethod method)
    00195         {
    00196             mSetRealMethodDispatchTable.insert(SetRealMethodDispatchTable::value_type(keyword, method));
    00197         }
    00198
    00199         inline void callSetRealMethod(String& keyword, Real val)
    00200         {
    00201             SetRealMethodDispatchTable::iterator methodIter = mSetRealMethodDispatchTable.find(keyword);
    00202             if (methodIter != mSetRealMethodDispatchTable.end())
    00203             {
    00204                             SetRealMethod m = (*methodIter).second;
    00205                 (mCurrentCapabilities->*m)(val);
    00206             }
    00207             else
    00208             {
    00209                 logParseError("undefined keyword: " + keyword);
    00210                         }
    00211         }
    00212
    00213         inline void addShaderProfile(String& val)
    00214         {
    00215             mCurrentCapabilities->addShaderProfile(val);
    00216         }
    00217
    00218         inline void setCapabilityEnumBool(String& name, bool val)
    00219         {
    00220             // check for errors
    00221             if(mCapabilitiesMap.find(name) == mCapabilitiesMap.end())
    00222             {
    00223                 logParseError("Undefined capability: " + name);
    00224                 return;
    00225             }
    00226             // only set true capabilities, we can't unset false
    00227             if(val)
    00228             {
    00229                 Capabilities cap = mCapabilitiesMap[name];
    00230                 mCurrentCapabilities->setCapability(cap);
    00231             }
    00232         }
    00233
    00234         void initialiaseDispatchTables();
    00235
    00236         void parseCapabilitiesLines(CapabilitiesLinesList& linesList);
    00237
    00238         void logParseError(const String& error) const;
    00239
    00240     };
    00244 }
    00245 #endif

Copyright © 2008 Torus Knot Software Ltd
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Last modified Sun May 8 2011 20:28:08