char szProgress [256];
snprintf (szProgress, sizeof(szProgress), "Reconstructing View %d (%.1f%%)", iViewNumber, 100 * iViewNumber / static_cast<double>(m_rProjections.nView()));
m_pSGP->setViewport (0, 0, 1, 1);
char szProgress [256];
snprintf (szProgress, sizeof(szProgress), "Reconstructing View %d (%.1f%%)", iViewNumber, 100 * iViewNumber / static_cast<double>(m_rProjections.nView()));
m_pSGP->setViewport (0, 0, 1, 1);