},
[this, level, x, y, z, wd, ht, dp](VkCommandBuffer cmd_buf, VkBuffer staging_buf, size_t src_off){
const VulkanFunctions &vk = device.get_functions();
},
[this, level, x, y, z, wd, ht, dp](VkCommandBuffer cmd_buf, VkBuffer staging_buf, size_t src_off){
const VulkanFunctions &vk = device.get_functions();