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OgreHighLevelGpuProgram.cpp

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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 © 2000-2003 The OGRE Team
00008 Also see acknowledgements in Readme.html
00009 
00010 This program is free software you can redistribute it and/or modify it under
00011 the terms of the GNU Lesser General Public License as published by the Free Software
00012 Foundation either version 2 of the License, or (at your option) any later
00013 version.
00014 
00015 This program is distributed in the hope that it will be useful, but WITHOUT
00016 ANY WARRANTY without even the implied warranty of MERCHANTABILITY or FITNESS
00017 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
00018 
00019 You should have received a copy of the GNU Lesser General Public License along with
00020 this program if not, write to the Free Software Foundation, Inc., 59 Temple
00021 Place - Suite 330, Boston, MA 02111-1307, USA, or go to
00022 http://www.gnu.org/copyleft/lesser.txt.
00023 -----------------------------------------------------------------------------
00024 */
00025 #include "OgreStableHeaders.h"
00026 #include "OgreHighLevelGpuProgram.h"
00027 #include "OgreException.h"
00028 #include "OgreGpuProgramManager.h"
00029 #include "OgreSDDataChunk.h"
00030 
00031 namespace Ogre
00032 {
00033     //---------------------------------------------------------------------------
00034     HighLevelGpuProgram::HighLevelGpuProgram(const String& name, GpuProgramType gptype, 
00035         const String& language)
00036         : GpuProgram(name, gptype, language), mHighLevelLoaded(false), mAssemblerProgram(0)
00037     {
00038     }
00039     //---------------------------------------------------------------------------
00040     void HighLevelGpuProgram::load()
00041     {
00042         if (mIsLoaded)
00043         {
00044             unload();
00045         }
00046 
00047         // load self 
00048         loadHighLevelImpl();
00049 
00050         // create low-level implementation
00051         createLowLevelImpl();
00052         // load constructed assembler program
00053         assert(mAssemblerProgram && "Subclass did not initialise mAssemblerProgram!");
00054         mAssemblerProgram->load();
00055         mIsLoaded = true;
00056     }
00057     //---------------------------------------------------------------------------
00058     void HighLevelGpuProgram::unload()
00059     {   
00060         if (mAssemblerProgram)
00061             mAssemblerProgram->unload();
00062         unloadImpl();
00063         mIsLoaded = false;
00064     }
00065     //---------------------------------------------------------------------------
00066     HighLevelGpuProgram::~HighLevelGpuProgram()
00067     {
00068         // superclasses will trigger unload
00069     }
00070     //---------------------------------------------------------------------------
00071     GpuProgramParametersSharedPtr HighLevelGpuProgram::createParameters(void)
00072     {
00073         // Make sure param defs are loaded
00074         GpuProgramParametersSharedPtr params = GpuProgramManager::getSingleton().createParameters();
00075         // Only populate named parameters if we can support this program
00076         if (this->isSupported())
00077         {
00078             loadHighLevelImpl();
00079             populateParameterNames(params);
00080         }
00081         return params;
00082     }
00083     //---------------------------------------------------------------------------
00084     void HighLevelGpuProgram::loadHighLevelImpl(void)
00085     {
00086         if (!mHighLevelLoaded)
00087         {
00088             if (mLoadFromFile)
00089             {
00090                 // find & load source code
00091                 SDDataChunk chunk;
00092                 GpuProgramManager::getSingleton()._findResourceData(mFilename, chunk);
00093                 mSource = chunk.getAsString();
00094             }
00095             loadFromSource();
00096             mHighLevelLoaded = true;
00097         }
00098     }
00099 
00100 }

Copyright © 2002-2003 by The OGRE Team
Last modified Fri May 14 23:22:17 2004