void DDErrorBox( char *location, HRESULT error )
{
char title[256];
char *error_string;
strcpy( title, "Error At: " );
strcat( title, location );
error_string = D3DRMErrorToString( error );
MessageBox( 0, error_string, title, MB_OK );
}
STDMETHODIMP CVWRenderRoot::Update()
{
HRESULT hr = S_OK;
if (!m_pVWRender3D)
return E_NOTINITIALIZED;
EnterCriticalSection(&m_CS);
CRect rectBack, rectWnd;
static iBlt = 0;
if (m_bFPSEnabled)
dwBltTime = GetTickCount();
if (GetWindowRect(m_hWnd, &rectWnd) == NULL)
{
ASSERT(FALSE);
goto e_Update;
}
if (m_pddsFrontBuffer && m_pddsFrontBuffer->IsLost() == DDERR_SURFACELOST)
{
m_pddsFrontBuffer->Restore();
// Should NOT call HandleSizeInternal from rendering thread. Seems OK to remove
// this now after testing with new drop of Win2K.
// It seems that just restoring the back buffer (if it exists) don't quite cut it.
// if (FAILED(hr = HandleSizeInternal(rectWnd.Width(), rectWnd.Height(), m_bUseHWAcceleration, VARIANT_TRUE)))
// goto e_Update;
}
if (m_bUseBackBuffer || !m_bUseHWAcceleration)
{
if (!m_pddsBackBuffer)
{
// Must have failed to create the back buffer.
hr = E_FAIL;
goto e_Update;
}
// Is device is smaller than window?
if (m_iCurrentCX < rectWnd.Width())
rectWnd.right = rectWnd.left + m_iCurrentCX;
if (m_iCurrentCY < rectWnd.Height())
rectWnd.bottom = rectWnd.top + m_iCurrentCY;
hr = m_pddsFrontBuffer->SetClipper(m_lpDDClipper);
if (FAILED(hr))
{
TRACE(CString(D3DRMErrorToString(hr))+ CString("\n"));
goto e_Update;
}
// Now strech blt from back buffer to front.
rectBack.left = 0;
rectBack.top = 0;
if (m_bFastMode)
{
rectBack.right = rectWnd.Width() >> 1;
rectBack.bottom = rectWnd.Height() >> 1;
}
else
{
rectBack.right = rectWnd.Width();
rectBack.bottom = rectWnd.Height();
}
// Now strech blt from back buffer to front.
if ((rectWnd.left != rectWnd.right) &&
(rectWnd.top != rectWnd.bottom))
{
hr = m_pddsFrontBuffer->Blt(&rectWnd,m_pddsBackBuffer,&rectBack,DDBLT_WAIT,NULL);
if (FAILED(hr))
{
TRACE(CString(D3DRMErrorToString(hr))+ CString("\n"));
goto e_Update;
}
}
}
