/*---------------------------------------------------------------------------*
  Project:  TwlSDK - NandInitializer
  File:     fade.c

  Copyright 2008 Nintendo.  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.

  $Date::            $
  $Rev$
  $Author$
 *---------------------------------------------------------------------------*/

#include <twl.h>
#include "kami_global.h"

/*---------------------------------------------------------------------------*
    定数定義
 *---------------------------------------------------------------------------*/

/*---------------------------------------------------------------------------*
    内部変数定義
 *---------------------------------------------------------------------------*/

static int brightness = 0;
static int master_brightness = -16;
static int counter;

/*---------------------------------------------------------------------------*
    内部関数定義
 *---------------------------------------------------------------------------*/
BOOL FadeOutTick(void)
{
	if ( brightness < 16)
	{
//		if (++counter == 2)
//		{
			counter = 0;
			G2_SetBlendBrightness( GX_BLEND_PLANEMASK_BG0 | GX_BLEND_PLANEMASK_BG1, ++brightness );
//		}
		return FALSE;
	}
	return TRUE;
}

BOOL FadeInTick(void)
{
	if ( brightness > 0)
	{
//		if (++counter == 2)
//		{
			counter = 0;
			G2_SetBlendBrightness( GX_BLEND_PLANEMASK_BG0 | GX_BLEND_PLANEMASK_BG1, --brightness );
//		}
		return FALSE;
	}
	return TRUE;
}

BOOL FadeInMaster(void)
{
	if ( master_brightness < 0)
	{
		if (++counter == 2)
		{
			counter = 0;
			GX_SetMasterBrightness( ++master_brightness );
		}
		return FALSE;
	}
	return TRUE;
}