Constant vulkanalia::vk::EXT_EXTERNAL_MEMORY_DMA_BUF_EXTENSION

pub const EXT_EXTERNAL_MEMORY_DMA_BUF_EXTENSION: [i8; 256];

https://www.khronos.org/registry/vulkan/specs/1.2-extensions/man/html/VK_EXT_external_memory_dma_buf.html