We use an in-house OpenGL app to provide the out-the-window visuals for our flight simulators. The app is cross platform, but until now the Mac version was only used by desktop researchers, not in our primary sim labs.
Now we are attempting to replace some Windows boxes with Apple Studios. We can easily maintain high framerate, and visual quality is excellent, but we are finding the graphics have a bit of stutter during high yaw rates (which quickly forces new assets into view).
I've eliminating unnecessary processes, tried raising my priority via pthread_set_qos_class_self_np() or thread_policy_set(), and reducing textures quality, all of which helped, but it didn't eliminate the problem.
For background, we are using framebuffers, we have a very large texture database (90 GB), and the render code runs in the main thread (not a secondary thread).
What might I be missing?
