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
}
}
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;
}