contextOn         162 samples/gpu/driver_api_stereo_multi.cpp     contextOn(0);
contextOn         169 samples/gpu/driver_api_stereo_multi.cpp     contextOn(1);
contextOn         180 samples/gpu/driver_api_stereo_multi.cpp     contextOn(0);
contextOn         189 samples/gpu/driver_api_stereo_multi.cpp     contextOn(1);
contextOn         205 samples/gpu/driver_api_stereo_multi.cpp     contextOn(device_id);