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Extended VmaAllocationInfo to include the size of the actual allocation #340

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Extended VmaAllocationInfo to include the size of the actual allocation #340

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23 changes: 23 additions & 0 deletions include/vk_mem_alloc.h
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Original file line number Diff line number Diff line change
Expand Up @@ -1365,6 +1365,13 @@ typedef struct VmaAllocationInfo
`vkCmdCopyBuffer` must be limited to the size of the resource.
*/
VkDeviceSize size;
/** \brief Size of this actual allocation (as made to vkAllocateMemory), in bytes.

It never changes.

\note Allocation size returned in this variable is always larger or equal to VmaAllocationInfo::size.
*/
VkDeviceSize allocationSize;
/** \brief Pointer to the beginning of this allocation as mapped data.

If the allocation hasn't been mapped using vmaMapMemory() and hasn't been
Expand Down Expand Up @@ -6055,6 +6062,7 @@ struct VmaAllocation_T
uint8_t SwapBlockAllocation(VmaAllocator hAllocator, VmaAllocation allocation);
VmaAllocHandle GetAllocHandle() const;
VkDeviceSize GetOffset() const;
VkDeviceSize GetAllocationSize() const;
VmaPool GetParentPool() const;
VkDeviceMemory GetMemory() const;
void* GetMappedData() const;
Expand Down Expand Up @@ -12098,6 +12106,20 @@ VkDeviceSize VmaAllocation_T::GetOffset() const
}
}

VkDeviceSize VmaAllocation_T::GetAllocationSize() const
{
switch (m_Type)
{
case ALLOCATION_TYPE_BLOCK:
return m_BlockAllocation.m_Block->m_pMetadata->GetSize();
case ALLOCATION_TYPE_DEDICATED:
return GetSize();
default:
VMA_ASSERT(0);
return 0;
}
}

VmaPool VmaAllocation_T::GetParentPool() const
{
switch (m_Type)
Expand Down Expand Up @@ -15267,6 +15289,7 @@ void VmaAllocator_T::GetAllocationInfo(VmaAllocation hAllocation, VmaAllocationI
pAllocationInfo->deviceMemory = hAllocation->GetMemory();
pAllocationInfo->offset = hAllocation->GetOffset();
pAllocationInfo->size = hAllocation->GetSize();
pAllocationInfo->allocationSize = hAllocation->GetAllocationSize();
pAllocationInfo->pMappedData = hAllocation->GetMappedData();
pAllocationInfo->pUserData = hAllocation->GetUserData();
pAllocationInfo->pName = hAllocation->GetName();
Expand Down