Example #1
0
void QD3DWindowSurface::flush(QWidget *widget, const QRegion &rgn, const QPoint &offset)
{
    QPoint wOffset = qt_qwidget_data(widget)->wrect.topLeft();

    QDirect3DPaintEngine *engine = qt_d3dEngine();
    LPDIRECT3DSWAPCHAIN9 swapchain = engine->swapChain(d_ptr->m_widget);

    if (swapchain) {
        QRect br = rgn.boundingRect();
        QRect wbr = br.translated(-wOffset);

        RECT destrect;
        destrect.left   = wbr.x();
        destrect.top    = wbr.y();
        destrect.right  = destrect.left + wbr.width();
        destrect.bottom = destrect.top  + wbr.height();

        RECT srcrect;
        srcrect.left    = br.x() + offset.x();
        srcrect.top     = br.y() + offset.y();
        srcrect.right   = wbr.width() + srcrect.left;
        srcrect.bottom  = wbr.height() + srcrect.top;
        int devwidth = d_ptr->m_lastSize.width();
        int devheight = d_ptr->m_lastSize.height();

        if (devwidth <= srcrect.right) {
            int diff = srcrect.right - devwidth;
            srcrect.right -= diff;
            destrect.right -= diff;
            if (srcrect.right <= srcrect.left)
                return;
        }
        if (devheight <= srcrect.bottom) {
            int diff = srcrect.bottom - devheight;
            srcrect.bottom -= diff;
            destrect.bottom -= diff;
            if (srcrect.bottom <= srcrect.top)
                return;
        }

        if (FAILED(swapchain->Present(&srcrect, &destrect, widget->winId(), 0, 0)))
            qWarning("QDirect3DPaintEngine: failed to present back buffer.");

#ifdef D3D_DEBUG_BACKBUFFER
        qDebug() << widget << srcrect.left << srcrect.top << wbr.width() << wbr.height() << "Dest: " << destrect.left << destrect.top;
        IDirect3DSurface9 *surface;
        swapchain->GetBackBuffer(0, D3DBACKBUFFER_TYPE_MONO, &surface);
        QString filename("C:\\test.bmp");
        D3DXSaveSurfaceToFile(filename.utf16(), D3DXIFF_BMP, surface, 0, 0);
        surface->Release();
#endif
    }
}
Example #2
0
bool GnDX9SwapChainBuffer::CreateBufferData(D3DPRESENT_PARAMETERS d3dpp, LPDIRECT3DDEVICE9 pDevice,
        LPDIRECT3DSWAPCHAIN9& pSwapChain, LPDIRECT3DSURFACE9& pSurface)
{
    HRESULT hr = S_OK;
    if ( FAILED(hr = pDevice->CreateAdditionalSwapChain(&d3dpp, &pSwapChain)) )
        return false;

    if ( FAILED(pSwapChain->GetBackBuffer(0, D3DBACKBUFFER_TYPE_MONO, &pSurface)) )
    {
        GnDxRelease(pSwapChain);
        return false;
    }

    return true;
}