[QT]在Qt中使用Direct3D

先发个找到的原文

http://www.cppblog.com/eros/archive/2009/05/13/82758.html

因为QT使用起来非常方便,也来用一下！

不过因为Dx的头文件在编译的时候N多警告！

不过没事！可以继续！

貌似没有idle事件，难道只能用定时器作更新？

class D3DWidget : public QWidget
{
    Q_OBJECT
public:
    explicit D3DWidget(QWidget *parent = 0);
    ~D3DWidget();
    void show();
protected:
    void init();
    bool supportedCheck( IDirect3D9 * );
protected slots:
    void creatResource();
    void frameMove();
    void render();
    void destory();
    void loop();
protected:
    QPaintEngine * paintEngine() const;
    void paintEvent(QPaintEvent *);
    void timerEvent ( QTimerEvent * event );
private:
　　//摄像机控制
    void wheelEvent(QWheelEvent *);
    void mousePressEvent(QMouseEvent *);
    void mouseMoveEvent(QMouseEvent *);
    void keyPressEvent(QKeyEvent *);
    void keyReleaseEvent(QKeyEvent *);
private:
    Ui::D3DWidget *ui;
};

 

 

D3DWidget::D3DWidget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::D3DWidget),
    enableHdr(false)
{
    setWindowTitle("Direct3D Window");
    ui->setupUi(this);
    QWidget::setAttribute(Qt::WA_PaintOnScreen, true);
    setMouseTracking( true );
}


QPaintEngine * D3DWidget::paintEngine() const
{
    return NULL;
}

void D3DWidget::paintEvent(QPaintEvent *)
{
}

void D3DWidget::show()
{
    //初始化错误输出
    errorManager::getInstance().initChannel();
    //初始化
    init();
    //创建资源
    creatResource();

    QWidget::show();

    getState().lastTickCount.ref() = GetTickCount();

    startTimer( 1000 / 40 );
}

void D3DWidget::timerEvent ( QTimerEvent * event )
{
    float curTickCount = GetTickCount();
    getState().elapsedTime.ref() = static_cast<float>( curTickCount - getState().lastTickCount.get() ) / 1000.0f;
    getState().time.ref() += getState().elapsedTime.get();
    loop();
    //FPS更新频率
    static float update = 0.5f;
    update -= getState().elapsedTime.get();
    if( update <= 0.0f )
    {
        update = 0.5f;
        setWindowTitle( tr("3D FPS:%1").arg(1.0f / getState().elapsedTime.get()) );
    }
    getState().lastTickCount.ref() = curTickCount;
    event->accept();
}

void D3DWidget::loop()
{
    frameMove();

    if( isActiveWindow() && !isHidden() )
        render();
}

void D3DWidget::render()
{
    LPDIRECT3DDEVICE9 device = getState().d3dDevice.get();

    device->SetTransform( D3DTS_VIEW , getState().camera.get()->getViewMatrix() );
    device->SetTransform( D3DTS_PROJECTION , getState().camera.get()->getProjectMatrix() );

    device->Clear( 0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER,0 , 1.0f, 0 );
    device->BeginScene();

    device->EndScene();
    device->Present( 0 , 0 , 0 , 0 );
}