/*---------------------------------------------------------------------------*
  Project:  NintendoWare
  File:     demo_SimpleApp.cpp
  
  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: 31311 $
 *---------------------------------------------------------------------------*/

#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   */