/*---------------------------------------------------------------------------*
  Project:  NintendoWare
  File:     demo_SimpleApp.cpp

  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: 23844 $
 *---------------------------------------------------------------------------*/

#include <nw/types.h>
#include <nw/demo.h>

namespace nw
{
namespace demo
{

SimpleApp* SimpleApp::s_pInstance = NULL;

//----------------------------------------
void
SimpleApp::Initialize()
{
    m_CurrentDisplay = DISPLAY_MAX;

    nw::demo::InitializeGraphicsSystem(&m_DeviceAllocator);

    nw::demo::PadFactory::Initialize(&m_DeviceAllocator);

    nw::demo::RenderSystem::Description renderDesc;

    nw::demo::DisplayBufferSwapper::Description& upperScreenDesc =
        renderDesc.upperScreenDescription;

    nw::demo::DisplayBufferSwapper::Description& lowerScreenDesc =
        renderDesc.lowerScreenDescription;

    m_pRenderSystem = nw::demo::RenderSystem::Create(
        &m_DeviceAllocator, renderDesc);

    NW_NULL_ASSERT(m_pRenderSystem);

    m_pRenderTargetUpper = nw::gfx::IRenderTarget::Builder()
        .BufferSize(upperScreenDesc.height, upperScreenDesc.width)
        .ColorFormat(renderDesc.renderColorFormat)
        .Create(&m_DeviceAllocator);

    NW_NULL_ASSERT(m_pRenderTargetUpper);

    m_pRenderTargetLower = nw::gfx::IRenderTarget::Builder()
        .BufferSize(lowerScreenDesc.height, lowerScreenDesc.width)
        .ColorFormat(renderDesc.renderColorFormat)
        .Create(&m_DeviceAllocator);

    NW_NULL_ASSERT(m_pRenderTargetLower);

    NW_GL_ASSERT();
}

//----------------------------------------
void
SimpleApp::Finalize()
{
    nw::demo::PadFactory::Finalize();
    nw::gfx::SafeDestroy(m_pRenderSystem);
    nw::gfx::SafeDestroy(m_pRenderTargetUpper);
    nw::gfx::SafeDestroy(m_pRenderTargetLower);
}

//----------------------------------------
void
SimpleApp::TransferBuffer()
{
    switch (m_CurrentDisplay)
    {
    case DISPLAY0:
        m_pRenderSystem->TransferBuffer(nw::demo::UPPER_SCREEN);
        break;

    case DISPLAY1:
        m_pRenderSystem->TransferBuffer(nw::demo::LOWER_SCREEN);
        break;

    default:
        break;
    }
}

//----------------------------------------
void
SimpleApp::SetRenderingTarget(Display display)
{
    NW_ASSERT(display == DISPLAY0 || display == DISPLAY1);

    this->TransferBuffer();

    switch (display)
    {
    case DISPLAY0:
        m_pRenderSystem->SetRenderTarget(m_pRenderTargetUpper);
        m_CurrentDisplay = DISPLAY0;
        break;

    case DISPLAY1:
        m_pRenderSystem->SetRenderTarget(m_pRenderTargetLower);
        m_CurrentDisplay = DISPLAY1;
        break;

    default:
        break;
    }
}

//----------------------------------------
const gfx::FrameBufferObject&
SimpleApp::GetFrameBufferObject() const
{
    return m_pRenderSystem->GetRenderContext()->GetRenderTarget()->GetBufferObject();
}

//----------------------------------------
void
SimpleApp::SwapBuffer(Display display)
{
    this->TransferBuffer();
    m_CurrentDisplay = DISPLAY_MAX;

    s32 screenKind = 0;
    switch (display)
    {
    case DISPLAY0:
        screenKind = nw::demo::UPPER_SCREEN;
        break;

    case DISPLAY1:
        screenKind = nw::demo::LOWER_SCREEN;
        break;

    case DISPLAY_BOTH:
        screenKind = nw::demo::UPPER_SCREEN | nw::demo::LOWER_SCREEN;
        break;

    default:
        return;
    }

    m_pRenderSystem->PresentBuffer(screenKind);
    NW_GL_ASSERT();
}

//----------------------------------------
void*
SimpleApp::Allocate(size_t size, u8 alignment)
{
    return nw::demo::Alloc(size, alignment);
}

//----------------------------------------
void*
SimpleApp::AllocateDeviceMemory(size_t size, u8 alignment)
{
    return nw::demo::Alloc(size, alignment);
}

//----------------------------------------
void
SimpleApp::Free(void* ptr)
{
    nw::demo::Free(ptr);
}

} /* namespace demo */
} /* namespace nw   */