I would like to know if there's any way of grabbing the video background as it is rendered on the device's screen (iOS/C++).
Currently I've only been able to get either the whole scene (video background + 3D models) with a glReadPixels() or just a QCAR::Image from a QCAR::State, but with dimension completely unrelated (i.e. on my iPad I get a 1280*720 image, while the screen resolution is 2048*1536).
Moreover, the quality of the QCAR image was terrible (with some aliasing).
Is there another method to grab only the video background and in the device's native resolution? (i.e. as rendered).