Irrlicht Engine

I add some code // --- > driver->endScene(); int fps = driver->getFPS(); if (lastFPS != fps) { core::stringw tmp(L"ARToolkit Irrlicht OpenCV ["); tmp += driver->getName(); tmp += L"] fps: "; tmp += fps; device->setWindowCaption(tmp.c_str()); lastFPS = fps; } I see that Frame per ...