/*---------------------------------------------------------------------------*
  Project:  NintendoWare
  File:     SmCommandReuser.h
  
  Copyright (C)2009-2011 Nintendo/HAL Laboratory, Inc.  All rights reserved.
  
  These coded instructions, statements, and computer programs contain proprietary
  information of Nintendo and/or its licensed developers and are protected by
  national and international copyright laws. 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.
  
  The content herein is highly confidential and should be handled accordingly.
  
  $Revision: $
 *---------------------------------------------------------------------------*/

#ifndef SM_COMMAND_REUSER_H_
#define SM_COMMAND_REUSER_H_

#include <nn/gx.h>

//---------------------------------------------------------------------------
// コマンドを作って再利用するクラスです。
class SmCommandReuser
{    
public:
    SmCommandReuser()
    : m_StoreCommandListId(0),
      m_CommandListId(0),
      m_BufferOffset(0),
      m_BufferSize(0),
      m_RequestId(0),
      m_RequestSize(0)
    {}
    
    // キャッシュ作成を開始します。
    void StartCaching(GLuint cachingCommandListId)
    {
        // 現在バインドされているコマンドリストをストア
        nngxGetCmdlistParameteri( NN_GX_CMDLIST_BINDING, &m_StoreCommandListId );

        // キャッシュ用のコマンドリストへ切り替え
        m_CommandListId = cachingCommandListId;
        nngxBindCmdlist(cachingCommandListId);
        nngxClearCmdlist();
        nngxStartCmdlistSave();
        NW_GL_ASSERT();
    }

    // キャッシュ作成を終了します。
    void EndCaching()
    {
        nngxSplitDrawCmdlist();
        NW_GL_ASSERT();
        
        nngxStopCmdlistSave(
            &this->m_BufferOffset,
            &this->m_BufferSize,
            &this->m_RequestId,
            &this->m_RequestSize);
        NW_GL_ASSERT();
        
        nngxBindCmdlist( m_StoreCommandListId );
    }
    
    // キャッシュしたコマンドを使用します。
    void UseCommand( bool isCopyBuffer )
    {
        GLboolean copyBuffer = isCopyBuffer ? GL_TRUE : GL_FALSE;
        nngxUseSavedCmdlist(
            this->m_CommandListId,
            this->m_BufferOffset,
            this->m_BufferSize,
            this->m_RequestId,
            this->m_RequestSize,
            0,
            copyBuffer);
        NW_GL_ASSERT();
    }

    // キャッシュされているか？
    bool IsCach()
    {
        if( m_BufferSize > 0 )
        {
            return true;
        }
        else
        {
            return false;
        }
    }
    
    GLsizei GetBufferSize() const
    {
        return m_BufferSize;
    }
    
private:
    GLint       m_StoreCommandListId;
    GLuint      m_CommandListId;
    GLuint      m_BufferOffset;
    GLsizei     m_BufferSize;
    GLuint      m_RequestId;
    GLsizei     m_RequestSize;
};



//---------------------------------------------------------------------------
// 静的なコマンドキャッシュ領域を確保し、コマンドを登録します。
class SmStaticCommandCach
{    
public:

    // コンストラクタ
    SmStaticCommandCach()
    {
        nngxGenCmdlists(1, &(m_CachingCommandList));
        nngxBindCmdlist(m_CachingCommandList);
        nngxCmdlistStorage(description.cachingCommandBufferSize, description.cachingRequestCount);
        nngxSetCmdlistParameteri(NN_GX_CMDLIST_RUN_MODE, NN_GX_CMDLIST_SERIAL_RUN);
    }


};

#endif // SM_COMMAND_REUSER_H_