/*
-----------------------------------------------------------------------------
This source file is part of OGRE
    (Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.stevestreeting.com/ogre/

Copyright © 2000-2003 The OGRE Team
Also see acknowledgements in Readme.html

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.

This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/gpl.html.
-----------------------------------------------------------------------------
*/

#include "OgreGLGpuProgramManager.h"
#include "OgreGLGpuProgram.h"
#include "OgreLogManager.h"

using namespace Ogre;

GLGpuProgramManager::~GLGpuProgramManager()
{
}

bool GLGpuProgramManager::registerProgramFactory(const String& syntaxCode, CreateGpuProgramCallback createFn)
{
    return mProgramMap.insert(ProgramMap::value_type(syntaxCode, createFn)).second;
}

bool GLGpuProgramManager::unregisterProgramFactory(const String& syntaxCode)
{
    return mProgramMap.erase(syntaxCode) != 0;
}

GpuProgramParametersSharedPtr GLGpuProgramManager::createParameters(void)
{ 
    return GpuProgramParametersSharedPtr(new GpuProgramParameters());
}

GpuProgram* GLGpuProgramManager::create(const String& name, GpuProgramType gptype, const String& syntaxCode)
{
    ProgramMap::const_iterator iter = mProgramMap.find(syntaxCode);
    if(iter == mProgramMap.end())
    {
        // No factory, this is an unsupported syntax code, probably for another rendersystem
        // Create a basic one, it doesn't matter what it is since it won't be used
        return new GLGpuProgram(name, gptype, syntaxCode);
    }
    
    return (iter->second)(name, gptype, syntaxCode);
}

