static void virtio_gpu_simple_process_cmd(VirtIOGPU *g,
                                          struct virtio_gpu_ctrl_command *cmd)
{
    VIRTIO_GPU_FILL_CMD(cmd->cmd_hdr);

    switch (cmd->cmd_hdr.type) {
    case VIRTIO_GPU_CMD_GET_DISPLAY_INFO:
        virtio_gpu_get_display_info(g, cmd);
        break;
    case VIRTIO_GPU_CMD_RESOURCE_CREATE_2D:
        virtio_gpu_resource_create_2d(g, cmd);
        break;
    case VIRTIO_GPU_CMD_RESOURCE_UNREF:
        virtio_gpu_resource_unref(g, cmd);
        break;
    case VIRTIO_GPU_CMD_RESOURCE_FLUSH:
        virtio_gpu_resource_flush(g, cmd);
        break;
    case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D:
        virtio_gpu_transfer_to_host_2d(g, cmd);
        break;
    case VIRTIO_GPU_CMD_SET_SCANOUT:
        virtio_gpu_set_scanout(g, cmd);
        break;
    case VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING:
        virtio_gpu_resource_attach_backing(g, cmd);
        break;
    case VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING:
        virtio_gpu_resource_detach_backing(g, cmd);
        break;
    default:
        cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
        break;
    }
    if (!cmd->finished) {
        virtio_gpu_ctrl_response_nodata(g, cmd, cmd->error ? cmd->error :
                                        VIRTIO_GPU_RESP_OK_NODATA);
    }
}

The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed.