Each section below has two boxes, the top runs on the main thread, the bottom
on the compositor.
This test is successful if the boxes are mostly in sync and all finish at the
same time.
Playback rate is set to -0.5
MT
CT
Playback rate is set to -1
MT
CT
Playback rate is set to -2
MT
CT
Playback rate is set to -1, direction is alternate
MT
CT
Playback rate is set to -1, direction is alternate, iterations is 5 - should finish a second later.
MT
CT
Playback rate is set to -1, direction is alternate-reverse
MT
CT
Playback rate is set to -1, direction is alternate-reverse, iterations is 5 - should finish a second later.
MT
CT