1457     int fence_fd;  in AcquireNextImageKHR()  local
1458     err = window->dequeueBuffer(window, &buffer, &fence_fd);  in AcquireNextImageKHR()
1470             swapchain.images[idx].dequeue_fence = fence_fd;  in AcquireNextImageKHR()
1476         window->cancelBuffer(window, buffer, fence_fd);  in AcquireNextImageKHR()
1481     if (fence_fd != -1) {  in AcquireNextImageKHR()
1482         fence_clone = dup(fence_fd);  in AcquireNextImageKHR()
1486             sync_wait(fence_fd, -1 /* forever */);  in AcquireNextImageKHR()
1500         window->cancelBuffer(window, buffer, fence_fd);  in AcquireNextImageKHR()
1713                     int fence_fd;  in QueuePresentKHR()  local
1714                     err = window->dequeueBuffer(window, &buffer, &fence_fd);  in QueuePresentKHR()
1726                         img.dequeue_fence = fence_fd;  in QueuePresentKHR()