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VmaAllocator_T::CalcPreferredBlockSize: Minor improvement - treating HOST_CACHED memory type as small heap.

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This commit is contained in:
Adam Sawicki 2018-01-19 16:09:04 +01:00
parent a0b2b80d2d
commit 95f07262a8
1 changed files with 4 additions and 2 deletions
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src/vk_mem_alloc.h
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@ -6862,8 +6862,10 @@ VkDeviceSize VmaAllocator_T::CalcPreferredBlockSize(uint32_t memTypeIndex)
{ {
const uint32_t heapIndex = MemoryTypeIndexToHeapIndex(memTypeIndex); const uint32_t heapIndex = MemoryTypeIndexToHeapIndex(memTypeIndex);
const VkDeviceSize heapSize = m_MemProps.memoryHeaps[heapIndex].size; const VkDeviceSize heapSize = m_MemProps.memoryHeaps[heapIndex].size;
return (heapSize <= VMA_SMALL_HEAP_MAX_SIZE) ? const bool isSmallHeap = heapSize <= VMA_SMALL_HEAP_MAX_SIZE ||
m_PreferredSmallHeapBlockSize : m_PreferredLargeHeapBlockSize; // HOST_CACHED memory type is treated as small despite it has full size of CPU memory heap, because we usually don't use much of it.
(m_MemProps.memoryTypes[memTypeIndex].propertyFlags & VK_MEMORY_PROPERTY_HOST_CACHED_BIT) != 0;
return isSmallHeap ? m_PreferredSmallHeapBlockSize : m_PreferredLargeHeapBlockSize;
} }
VkResult VmaAllocator_T::AllocateMemoryOfType( VkResult VmaAllocator_T::AllocateMemoryOfType(