[this, i](){
change_layout(i, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL, false);
change_layout(i+1, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, true);
[this, i](){
change_layout(i, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL, false);
change_layout(i+1, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, true);