Public Attributes
uint32_t	memoryType
	Memory type index that this allocation was allocated from.

VkDeviceMemory	deviceMemory
	Handle to Vulkan memory object.

VkDeviceSize	offset
	Offset in `VkDeviceMemory` object to the beginning of this allocation, in bytes. `(deviceMemory, offset)` pair is unique to this allocation.

VkDeviceSize	size
	Size of this allocation, in bytes.

void *	pMappedData
	Pointer to the beginning of this allocation as mapped data.

void *	pUserData
	Custom general-purpose pointer that was passed as VmaAllocationCreateInfo::pUserData or set using vmaSetAllocationUserData().

const char *	pName
	Custom allocation name that was set with vmaSetAllocationName().

Detailed Description

Parameters of VmaAllocation objects, that can be retrieved using function vmaGetAllocationInfo().

There is also an extended version of this structure that carries additional parameters: VmaAllocationInfo2.

Member Data Documentation

◆ deviceMemory

VkDeviceMemory VmaAllocationInfo::deviceMemory

Handle to Vulkan memory object.

Same memory object can be shared by multiple allocations.

It can change after the allocation is moved during Defragmentation.

◆ memoryType

uint32_t VmaAllocationInfo::memoryType

Memory type index that this allocation was allocated from.

It never changes.

◆ offset

VkDeviceSize VmaAllocationInfo::offset

Offset in VkDeviceMemory object to the beginning of this allocation, in bytes. (deviceMemory, offset) pair is unique to this allocation.

You usually don't need to use this offset. If you create a buffer or an image together with the allocation using e.g. function vmaCreateBuffer(), vmaCreateImage(), functions that operate on these resources refer to the beginning of the buffer or image, not entire device memory block. Functions like vmaMapMemory(), vmaBindBufferMemory() also refer to the beginning of the allocation and apply this offset automatically.

It can change after the allocation is moved during Defragmentation.

◆ pMappedData

void* VmaAllocationInfo::pMappedData

Pointer to the beginning of this allocation as mapped data.

If the allocation hasn't been mapped using vmaMapMemory() and hasn't been created with VMA_ALLOCATION_CREATE_MAPPED_BIT flag, this value is null.

It can change after call to vmaMapMemory(), vmaUnmapMemory(). It can also change after the allocation is moved during Defragmentation.

◆ pName

const char* VmaAllocationInfo::pName

Custom allocation name that was set with vmaSetAllocationName().

It can change after call to vmaSetAllocationName() for this allocation.

Another way to set custom name is to pass it in VmaAllocationCreateInfo::pUserData with additional flag VMA_ALLOCATION_CREATE_USER_DATA_COPY_STRING_BIT set [DEPRECATED].

◆ pUserData

void* VmaAllocationInfo::pUserData

Custom general-purpose pointer that was passed as VmaAllocationCreateInfo::pUserData or set using vmaSetAllocationUserData().

It can change after call to vmaSetAllocationUserData() for this allocation.

◆ size

VkDeviceSize VmaAllocationInfo::size

Size of this allocation, in bytes.