Had to revert back to Qt 4.8.5 but it works nonetheless. The video is choppy because I’m screencapturing the video as it’s running, but on my quadcore it runs at steady 60 fps. On duo-core it runs a steady 20 to 40 fps, so it really depends on your hardware, or I just need to optimize it more. But check out pure 3D in Qt and c++, no third-party dependency on OpenGL or DirectX!