By the way: This application, since it uses QC for compositing
still images much like my upcoming "Sandvox" does, fails silently
(and, to the end-user, mysteriously) on older hardware (such as a
2001 Titanium PowerBook G4), presumably because QC is not supported
on that configuration. So this application, like mine, could
benefit either from CPU fallback, or at least some way of detecting
incompatible systems.
The app needs to check for Quartz Extreme:
boolean_t valid = CGDisplayUsesOpenGLAcceleration(kCGDirectMainDisplay);