Screen tearing happens when the software swaps buffers on the GPU while the GPU is in the middle of reading out a buffer to send to the monitor. That tearing ha

Screen tearing happens when the software swaps buffers on the GPU while the GPU is in the middle of reading out a buffer to send to the monitor. That tearing has nothing at all to do with whatever buffering is or isn't happening in the display itself, because the discontinuity is actually present in the data stream sent to the display.