texture.h

/* Copyright (c) 2009-2012, Stefan Eilemann <eile@equalizergraphics.com>
 *                    2010, Cedric Stalder <cedric.stalder@gmail.com>
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License version 2.1 as published
 * by the Free Software Foundation.
 *  
 * This library 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 library; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef EQUTIL_TEXTURE_H
#define EQUTIL_TEXTURE_H

#include <eq/client/frame.h>        // Frame::Buffer enum

#include <lunchbox/thread.h>         // thread debug macro
#include <lunchbox/nonCopyable.h>    // base class

namespace eq
{
namespace util
{
namespace detail { class Texture; }
    class Texture : public lunchbox::NonCopyable
    {
    public:
        EQ_API Texture( const unsigned target,
                        const GLEWContext* const glewContext = 0 );

        EQ_API virtual ~Texture();

        EQ_API unsigned getTarget() const;

        uint32_t getCompressorTarget() const;

        EQ_API unsigned getInternalFormat() const;

        EQ_API void setExternalFormat( const uint32_t format,
                                       const uint32_t type );

        EQ_API unsigned getFormat() const;

        EQ_API unsigned getType() const;

        EQ_API unsigned getName() const;

        EQ_API int32_t getWidth() const;

        EQ_API int32_t getHeight() const;

        EQ_API bool isValid() const;

        EQ_API void init( const unsigned internalFormat, const int32_t width,
                          const int32_t height );

        EQ_API void flush();

        void applyZoomFilter( const ZoomFilter filter ) const;

        void applyWrap() const; //<! @internal

        EQ_API void copyFromFrameBuffer( const unsigned internalFormat,
                                         const fabric::PixelViewport& pvp );

        EQ_API void upload( const int32_t width, const int32_t height,
                            const void* ptr );

        EQ_API void download( void* buffer ) const;

        EQ_API void bind() const;

        EQ_API void bindToFBO( const unsigned target, const int32_t width,
                                  const int32_t height );
        
        EQ_API void resize( const int32_t width, const int32_t height );

        EQ_API void writeRGB( const std::string& filename ) const;

        EQ_API const GLEWContext* glewGetContext() const;
        EQ_API void setGLEWContext( const GLEWContext* context );

        EQ_API void flushNoDelete();

        EQ_API void setGLData( const unsigned id, const unsigned internalFormat,
                               const int32_t width, const int32_t height );

    private:
        detail::Texture* const _impl;

        void _setInternalFormat( const unsigned internalFormat );

        void _generate();
        
        void _grow( const int32_t width, const int32_t height );

        LB_TS_VAR( _thread );
    };
}
}

#endif // EQUTIL_TEXTURE_H