Constant vk_mem_erupt::ffi::VmaMemoryUsage_VMA_MEMORY_USAGE_CPU_ONLY

pub const VmaMemoryUsage_VMA_MEMORY_USAGE_CPU_ONLY: VmaMemoryUsage = 2;

Memory will be mappable on host. It usually means CPU (system) memory. Guarantees to be HOST_VISIBLE and HOST_COHERENT. CPU access is typically uncached. Writes may be write-combined. Resources created in this pool may still be accessible to the device, but access to them can be slow. It is roughly equivalent of D3D12_HEAP_TYPE_UPLOAD.

Usage: Staging copy of resources used as transfer source.