1479     int fence_fd;  in AcquireNextImageKHR()  local
1480     err = window->dequeueBuffer(window, &buffer, &fence_fd);  in AcquireNextImageKHR()
1493             swapchain.images[idx].dequeue_fence = fence_fd;  in AcquireNextImageKHR()
1499         window->cancelBuffer(window, buffer, fence_fd);  in AcquireNextImageKHR()
1504     if (fence_fd != -1) {  in AcquireNextImageKHR()
1505         fence_clone = dup(fence_fd);  in AcquireNextImageKHR()
1509             sync_wait(fence_fd, -1 /* forever */);  in AcquireNextImageKHR()
1523         window->cancelBuffer(window, buffer, fence_fd);  in AcquireNextImageKHR()
1736                     int fence_fd;  in QueuePresentKHR()  local
1737                     err = window->dequeueBuffer(window, &buffer, &fence_fd);  in QueuePresentKHR()
1747                         img.dequeue_fence = fence_fd;  in QueuePresentKHR()