/*---------------------------------------------------------------------------*
  Project:  NintendoWare
  File:     gfx_OffScreenBuffer.h

  Copyright (C)2009-2010 Nintendo Co., Ltd./HAL Laboratory, Inc.  All rights reserved.

  These coded instructions, statements, and computer programs contain
  proprietary information of Nintendo of America Inc. and/or Nintendo
  Company Ltd., and are protected by Federal copyright law.  They may
  not be disclosed to third parties or copied or duplicated in any form,
  in whole or in part, without the prior written consent of Nintendo.

  $Revision: 23585 $
 *---------------------------------------------------------------------------*/

#ifndef NW_GFX_OFFSCREENBUFFER_H_
#define NW_GFX_OFFSCREENBUFFER_H_

#include <nw/gfx/gfx_IRenderTarget.h>
#include <nw/ut/ut_Preprocessor.h>
#include <nw/gfx/res/gfx_ResTexture.h>
#include <nw/gfx/gfx_FrameBuffer.h>

namespace nw
{
namespace os
{
class IAllocator;
} // namespace os

namespace gfx
{

//---------------------------------------------------------------------------
//! @brief        画面に表示しない描画対象を表すクラスです。
//---------------------------------------------------------------------------
class OffScreenBuffer : public IRenderTarget
{
private:
    NW_DISALLOW_COPY_AND_ASSIGN(OffScreenBuffer);

public:
    NW_UT_RUNTIME_TYPEINFO;

    //! 設定内容を取得します。
    virtual const Description& GetDescription() const { return m_Description; }

    //---------------------------------------------------------------------------
    //! @brief        バッファオブジェクトを取得します。
    //!
    //! @return       バッファオブジェクトを返します。
    //---------------------------------------------------------------------------
    virtual const FrameBufferObject& GetBufferObject() const { return m_BackBufferObject; }

private:
    //---------------------------------------------------------------------------
    //! @brief        コンストラクタです。
    //---------------------------------------------------------------------------
    OffScreenBuffer(os::IAllocator* pAllocator, const Description& description, ResPixelBasedTexture resTexture);

    //---------------------------------------------------------------------------
    //! @brief        デストラクタです。
    //---------------------------------------------------------------------------
    virtual ~OffScreenBuffer();

//    GLuint m_BackBufferObject;
    FrameBufferObject m_BackBufferObject;
    void* m_ActivateCommand;
    
    Description m_Description;

    ResTexture m_Texture;

    friend class IRenderTarget;
};

} // namespace gfx
} // namespace nw

#endif // NW_GFX_OFFSCREENBUFFER_H_