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# OgreGLSupport.cpp

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    00001
    00002 /*
    00003 -----------------------------------------------------------------------------
    00004 This source file is part of OGRE
    00005     (Object-oriented Graphics Rendering Engine)
    00006 For the latest info, see http://www.ogre3d.org/
    00007
    00008 Copyright © 2000-2002 The OGRE Team
    00009 Also see acknowledgements in Readme.html
    00010
    00011 This program is free software; you can redistribute it and/or modify it under
    00012 the terms of the GNU Lesser General Public License as published by the Free Software
    00013 Foundation; either version 2 of the License, or (at your option) any later
    00014 version.
    00015
    00016 This program is distributed in the hope that it will be useful, but WITHOUT
    00017 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    00018 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
    00019
    00020 You should have received a copy of the GNU Lesser General Public License along with
    00021 this program; if not, write to the Free Software Foundation, Inc., 59 Temple
    00022 Place - Suite 330, Boston, MA 02111-1307, USA, or go to
    00023 http://www.gnu.org/copyleft/lesser.txt.
    00024 -----------------------------------------------------------------------------
    00025 */
    00026
    00027
    00028 #include "OgreGLSupport.h"
    00029 #include "OgreLogManager.h"
    00030
    00031 namespace Ogre {
    00032
    00033     void GLSupport::setConfigOption(const String &name, const String &value)
    00034     {
    00035         ConfigOptionMap::iterator it = mOptions.find(name);
    00036
    00037         if (it != mOptions.end())
    00038             it->second.currentValue = value;
    00039     }
    00040
    00041     ConfigOptionMap& GLSupport::getConfigOptions(void)
    00042     {
    00043         return mOptions;
    00044     }
    00045
    00046     void GLSupport::initialiseExtensions(void)
    00047     {
    00048         // Set version string
    00049         const GLubyte* pcVer = glGetString(GL_VERSION);
    00050
    00051
    00052         assert(pcVer && "Problems getting GL version string using glGetString");
    00053
    00054         String tmpStr = (const char*)pcVer;
    00055         LogManager::getSingleton().logMessage("GL_VERSION = " + tmpStr);
    00056         mVersion = tmpStr.substr(0, tmpStr.find(" "));
    00057
    00058         // Get vendor
    00059         const GLubyte* pcVendor = glGetString(GL_VENDOR);
    00060         tmpStr = (const char*)pcVendor;
    00061         LogManager::getSingleton().logMessage("GL_VENDOR = " + tmpStr);
    00062         mVendor = tmpStr.substr(0, tmpStr.find(" "));
    00063
    00064         // Get renderer
    00065         const GLubyte* pcRenderer = glGetString(GL_RENDERER);
    00066         tmpStr = (const char*)pcRenderer;
    00067         LogManager::getSingleton().logMessage("GL_RENDERER = " + tmpStr);
    00068
    00069         // Set extension list
    00070         std::stringstream ext;
    00071         String str;
    00072
    00073         const GLubyte* pcExt = glGetString(GL_EXTENSIONS);
    00074         LogManager::getSingleton().logMessage("GL_EXTENSIONS = " + String((const char*)pcExt));
    00075
    00076         assert(pcExt && "Problems getting GL extension string using glGetString");
    00077
    00078         ext << pcExt;
    00079
    00080         while(ext >> str)
    00081         {
    00082             extensionList.insert(str);
    00083         }
    00084
    00085         ext.str("");
    00086     }
    00087
    00088     bool GLSupport::checkMinGLVersion(const String& v) const
    00089     {
    00090         unsigned int first, second, third;
    00091         unsigned int cardFirst, cardSecond, cardThird;
    00092         if(v == mVersion)
    00093             return true;
    00094
    00095         String::size_type pos = v.find(".");
    00096         if(pos == String::npos)
    00097             return false;
    00098
    00099         String::size_type pos1 = v.rfind(".");
    00100         if(pos1 == String::npos)
    00101             return false;
    00102
    00103         first = ::atoi(v.substr(0, pos).c_str());
    00104         second = ::atoi(v.substr(pos + 1, pos1 - (pos + 1)).c_str());
    00105         third = ::atoi(v.substr(pos1 + 1, v.length()).c_str());
    00106
    00107         pos = mVersion.find(".");
    00108         if(pos == String::npos)
    00109             return false;
    00110
    00111         pos1 = mVersion.rfind(".");
    00112         if(pos1 == String::npos)
    00113             return false;
    00114
    00115         cardFirst  = ::atoi(mVersion.substr(0, pos).c_str());
    00116         cardSecond = ::atoi(mVersion.substr(pos + 1, pos1 - (pos + 1)).c_str());
    00117         cardThird  = ::atoi(mVersion.substr(pos1 + 1, mVersion.length()).c_str());
    00118
    00119         if(first <= cardFirst && second <= cardSecond && third <= cardThird)
    00120           return true;
    00121
    00122         return false;
    00123     }
    00124
    00125     bool GLSupport::checkExtension(const String& ext) const
    00126     {
    00127         if(extensionList.find(ext) == extensionList.end())
    00128             return false;
    00129
    00130         return true;
    00131     }
    00132
    00133 }

Copyright © 2002-2003 by The OGRE Team
Last modified Sun Nov 28 19:48:26 2004