/*
-----------------------------------------------------------------------------
This source file is part of OGRE
    (Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2006 Torus Knot Software Ltd
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 Lesser 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser 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/lesser.txt.

You may alternatively use this source under the terms of a specific version of
the OGRE Unrestricted License provided you have obtained such a license from
Torus Knot Software Ltd.
-----------------------------------------------------------------------------
*/

#ifndef __GLTextureManager_H__
#define __GLTextureManager_H__

#include "OgreGLPrerequisites.h"
#include "OgreTextureManager.h"
#include "OgreGLTexture.h"
#include "OgreGLSupport.h"

namespace Ogre {
    /** GL-specific implementation of a TextureManager */
    class _OgrePrivate GLTextureManager : public TextureManager
    {
    public:
        GLTextureManager(GLSupport& support);
        virtual ~GLTextureManager();

		GLuint getWarningTextureID() { return mWarningTextureID; }

		/// @copydoc TextureManager::getNativeFormat
		PixelFormat getNativeFormat(TextureType ttype, PixelFormat format, int usage);

        /// @copydoc TextureManager::isHardwareFilteringSupported
        bool isHardwareFilteringSupported(TextureType ttype, PixelFormat format, int usage,
            bool preciseFormatOnly = false);

    protected:
        /// @copydoc ResourceManager::createImpl
        Resource* createImpl(const String& name, ResourceHandle handle, 
            const String& group, bool isManual, ManualResourceLoader* loader, 
            const NameValuePairList* createParams);

		/// Internal method to create a warning texture (bound when a texture unit is blank)
		void createWarningTexture();

        GLSupport& mGLSupport;
		GLuint mWarningTextureID;
    };
}
#endif