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https://github.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator.git
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Added support for VMA_ALLOCATION_CREATE_PERSISTENT_MAP_BIT without HOST_VISIBLE. Improved empty block heuristics.
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@ -203,7 +203,8 @@ Functions</h2></td></tr>
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<tr><td class="fieldname"><a id="ggad9889c10c798b040d59c92f257cae597ae443691ef3d077c0dc3de5576ac4c312"></a>VMA_ALLOCATION_CREATE_PERSISTENT_MAP_BIT </td><td class="fielddoc"><p>Set this flag to use a memory that will be persistently mapped and retrieve pointer to it. </p>
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<tr><td class="fieldname"><a id="ggad9889c10c798b040d59c92f257cae597ae443691ef3d077c0dc3de5576ac4c312"></a>VMA_ALLOCATION_CREATE_PERSISTENT_MAP_BIT </td><td class="fielddoc"><p>Set this flag to use a memory that will be persistently mapped and retrieve pointer to it. </p>
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<p>Pointer to mapped memory will be returned through <a class="el" href="struct_vma_allocation_info.html#a5eeffbe2d2f30f53370ff14aefbadbe2" title="Pointer to the beginning of this allocation as mapped data. Null if this alloaction is not persistent...">VmaAllocationInfo::pMappedData</a>. You cannot map the memory on your own as multiple mappings of a single <code>VkDeviceMemory</code> are illegal.</p>
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<p>Pointer to mapped memory will be returned through <a class="el" href="struct_vma_allocation_info.html#a5eeffbe2d2f30f53370ff14aefbadbe2" title="Pointer to the beginning of this allocation as mapped data. Null if this alloaction is not persistent...">VmaAllocationInfo::pMappedData</a>. You cannot map the memory on your own as multiple mappings of a single <code>VkDeviceMemory</code> are illegal.</p>
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<p>If <a class="el" href="struct_vma_allocation_create_info.html#a6272c0555cfd1fe28bff1afeb6190150" title="Pool that this allocation should be created in. ">VmaAllocationCreateInfo::pool</a> is not null, usage of this flag must match usage of flag <code>VMA_POOL_CREATE_PERSISTENT_MAP_BIT</code> used during pool creation. </p>
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<p>If <a class="el" href="struct_vma_allocation_create_info.html#a6272c0555cfd1fe28bff1afeb6190150" title="Pool that this allocation should be created in. ">VmaAllocationCreateInfo::pool</a> is not null, usage of this flag must match usage of flag <code>VMA_POOL_CREATE_PERSISTENT_MAP_BIT</code> used during pool creation.</p>
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<p>Is it valid to use this flag for allocation made from memory type that is not <code>HOST_VISIBLE</code>. This flag is then ignored and memory is not mapped. This is useful if you need an allocation that is efficient to use on GPU (<code>DEVICE_LOCAL</code>) and still want to map it directly if possible on platforms that support it (e.g. Intel GPU). </p>
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</td></tr>
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<tr><td class="fieldname"><a id="ggad9889c10c798b040d59c92f257cae597a5f436af6c8fe8540573a6d22627a6fd2"></a>VMA_ALLOCATION_CREATE_CAN_BECOME_LOST_BIT </td><td class="fielddoc"><p>Allocation created with this flag can become lost as a result of another allocation with <code>VMA_ALLOCATION_CREATE_CAN_MAKE_OTHER_LOST_BIT</code> flag, so you must check it before use.</p>
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<tr><td class="fieldname"><a id="ggad9889c10c798b040d59c92f257cae597a5f436af6c8fe8540573a6d22627a6fd2"></a>VMA_ALLOCATION_CREATE_CAN_BECOME_LOST_BIT </td><td class="fielddoc"><p>Allocation created with this flag can become lost as a result of another allocation with <code>VMA_ALLOCATION_CREATE_CAN_MAKE_OTHER_LOST_BIT</code> flag, so you must check it before use.</p>
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<p>To check if allocation is not lost, call <a class="el" href="group__layer2.html#ga86dd08aba8633bfa4ad0df2e76481d8b" title="Returns current information about specified allocation. ">vmaGetAllocationInfo()</a> and check if <a class="el" href="struct_vma_allocation_info.html#ae0bfb7dfdf79a76ffefc9a94677a2f67" title="Handle to Vulkan memory object. ">VmaAllocationInfo::deviceMemory</a> is not <code>VK_NULL_HANDLE</code>.</p>
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<p>To check if allocation is not lost, call <a class="el" href="group__layer2.html#ga86dd08aba8633bfa4ad0df2e76481d8b" title="Returns current information about specified allocation. ">vmaGetAllocationInfo()</a> and check if <a class="el" href="struct_vma_allocation_info.html#ae0bfb7dfdf79a76ffefc9a94677a2f67" title="Handle to Vulkan memory object. ">VmaAllocationInfo::deviceMemory</a> is not <code>VK_NULL_HANDLE</code>.</p>
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File diff suppressed because one or more lines are too long
@ -685,6 +685,12 @@ typedef enum VmaAllocationCreateFlagBits {
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If VmaAllocationCreateInfo::pool is not null, usage of this flag must match
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If VmaAllocationCreateInfo::pool is not null, usage of this flag must match
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usage of flag `VMA_POOL_CREATE_PERSISTENT_MAP_BIT` used during pool creation.
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usage of flag `VMA_POOL_CREATE_PERSISTENT_MAP_BIT` used during pool creation.
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Is it valid to use this flag for allocation made from memory type that is not
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`HOST_VISIBLE`. This flag is then ignored and memory is not mapped. This is
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useful if you need an allocation that is efficient to use on GPU
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(`DEVICE_LOCAL`) and still want to map it directly if possible on platforms that
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support it (e.g. Intel GPU).
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*/
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*/
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VMA_ALLOCATION_CREATE_PERSISTENT_MAP_BIT = 0x00000004,
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VMA_ALLOCATION_CREATE_PERSISTENT_MAP_BIT = 0x00000004,
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/** Allocation created with this flag can become lost as a result of another
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/** Allocation created with this flag can become lost as a result of another
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@ -5315,8 +5321,8 @@ VkResult VmaBlockVector::Allocate(
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VmaAllocation* pAllocation)
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VmaAllocation* pAllocation)
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{
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{
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// Validate flags.
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// Validate flags.
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if(((createInfo.flags & VMA_ALLOCATION_CREATE_PERSISTENT_MAP_BIT) != 0) !=
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if(createInfo.pool != VK_NULL_HANDLE &&
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(m_BlockVectorType == VMA_BLOCK_VECTOR_TYPE_MAPPED))
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((createInfo.flags & VMA_ALLOCATION_CREATE_PERSISTENT_MAP_BIT) != 0) != (m_BlockVectorType == VMA_BLOCK_VECTOR_TYPE_MAPPED))
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{
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{
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VMA_ASSERT(0 && "Usage of VMA_ALLOCATION_CREATE_PERSISTENT_MAP_BIT must match VMA_POOL_CREATE_PERSISTENT_MAP_BIT.");
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VMA_ASSERT(0 && "Usage of VMA_ALLOCATION_CREATE_PERSISTENT_MAP_BIT must match VMA_POOL_CREATE_PERSISTENT_MAP_BIT.");
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return VK_ERROR_OUT_OF_DEVICE_MEMORY;
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return VK_ERROR_OUT_OF_DEVICE_MEMORY;
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@ -5548,7 +5554,19 @@ void VmaBlockVector::Free(
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m_HasEmptyBlock = true;
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m_HasEmptyBlock = true;
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}
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}
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}
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}
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// Must be called after srcBlockIndex is used, because later it may become invalid!
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// pBlock didn't become empty, but we have another empty block - find and free that one.
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// (This is optional, heuristics.)
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else if(m_HasEmptyBlock)
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{
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VmaDeviceMemoryBlock* pLastBlock = m_Blocks.back();
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if(pLastBlock->m_Metadata.IsEmpty() && m_Blocks.size() > m_MinBlockCount)
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{
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pBlockToDelete = pLastBlock;
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m_Blocks.pop_back();
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m_HasEmptyBlock = false;
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}
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}
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IncrementallySortBlocks();
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IncrementallySortBlocks();
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}
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}
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@ -6313,17 +6331,31 @@ VkResult VmaAllocator_T::AllocateMemoryOfType(
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VmaBlockVector* const blockVector = m_pBlockVectors[memTypeIndex][blockVectorType];
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VmaBlockVector* const blockVector = m_pBlockVectors[memTypeIndex][blockVectorType];
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VMA_ASSERT(blockVector);
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VMA_ASSERT(blockVector);
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const VkDeviceSize preferredBlockSize = blockVector->GetPreferredBlockSize();
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VmaAllocationCreateInfo finalCreateInfo = createInfo;
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// Heuristics: Allocate own memory if requested size if greater than half of preferred block size.
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const bool ownMemory =
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(createInfo.flags & VMA_ALLOCATION_CREATE_OWN_MEMORY_BIT) != 0 ||
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VMA_DEBUG_ALWAYS_OWN_MEMORY ||
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((createInfo.flags & VMA_ALLOCATION_CREATE_NEVER_ALLOCATE_BIT) == 0 &&
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vkMemReq.size > preferredBlockSize / 2);
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if(ownMemory)
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if(VMA_DEBUG_ALWAYS_OWN_MEMORY)
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{
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{
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if((createInfo.flags & VMA_ALLOCATION_CREATE_NEVER_ALLOCATE_BIT) != 0)
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finalCreateInfo.flags |= VMA_ALLOCATION_CREATE_OWN_MEMORY_BIT;
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}
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// Heuristics: Allocate own memory if requested size if greater than half of preferred block size.
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const VkDeviceSize preferredBlockSize = blockVector->GetPreferredBlockSize();
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if((finalCreateInfo.flags & VMA_ALLOCATION_CREATE_NEVER_ALLOCATE_BIT) == 0 &&
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vkMemReq.size > preferredBlockSize / 2)
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{
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finalCreateInfo.flags |= VMA_ALLOCATION_CREATE_OWN_MEMORY_BIT;
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}
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// If memory type is not HOST_VISIBLE, disable PERSISTENT_MAP.
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if((finalCreateInfo.flags & VMA_ALLOCATION_CREATE_PERSISTENT_MAP_BIT) != 0 &&
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(m_MemProps.memoryTypes[memTypeIndex].propertyFlags & VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT) == 0)
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{
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finalCreateInfo.flags &= ~VMA_ALLOCATION_CREATE_PERSISTENT_MAP_BIT;
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}
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if((finalCreateInfo.flags & VMA_ALLOCATION_CREATE_OWN_MEMORY_BIT) != 0)
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{
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if((finalCreateInfo.flags & VMA_ALLOCATION_CREATE_NEVER_ALLOCATE_BIT) != 0)
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{
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{
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return VK_ERROR_OUT_OF_DEVICE_MEMORY;
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return VK_ERROR_OUT_OF_DEVICE_MEMORY;
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}
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}
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@ -6333,8 +6365,8 @@ VkResult VmaAllocator_T::AllocateMemoryOfType(
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vkMemReq.size,
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vkMemReq.size,
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suballocType,
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suballocType,
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memTypeIndex,
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memTypeIndex,
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(createInfo.flags & VMA_ALLOCATION_CREATE_PERSISTENT_MAP_BIT) != 0,
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(finalCreateInfo.flags & VMA_ALLOCATION_CREATE_PERSISTENT_MAP_BIT) != 0,
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createInfo.pUserData,
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finalCreateInfo.pUserData,
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pAllocation);
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pAllocation);
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}
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}
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}
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}
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@ -6344,7 +6376,7 @@ VkResult VmaAllocator_T::AllocateMemoryOfType(
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VK_NULL_HANDLE, // hCurrentPool
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VK_NULL_HANDLE, // hCurrentPool
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m_CurrentFrameIndex.load(),
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m_CurrentFrameIndex.load(),
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vkMemReq,
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vkMemReq,
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createInfo,
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finalCreateInfo,
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suballocType,
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suballocType,
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pAllocation);
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pAllocation);
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if(res == VK_SUCCESS)
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if(res == VK_SUCCESS)
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@ -6353,24 +6385,31 @@ VkResult VmaAllocator_T::AllocateMemoryOfType(
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}
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}
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// 5. Try own memory.
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// 5. Try own memory.
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res = AllocateOwnMemory(
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if((finalCreateInfo.flags & VMA_ALLOCATION_CREATE_NEVER_ALLOCATE_BIT) != 0)
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vkMemReq.size,
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suballocType,
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memTypeIndex,
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(createInfo.flags & VMA_ALLOCATION_CREATE_PERSISTENT_MAP_BIT) != 0,
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createInfo.pUserData,
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pAllocation);
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if(res == VK_SUCCESS)
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{
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{
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// Succeeded: AllocateOwnMemory function already filld pMemory, nothing more to do here.
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return VK_ERROR_OUT_OF_DEVICE_MEMORY;
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VMA_DEBUG_LOG(" Allocated as OwnMemory");
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return VK_SUCCESS;
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}
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}
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else
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else
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{
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{
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// Everything failed: Return error code.
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res = AllocateOwnMemory(
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VMA_DEBUG_LOG(" vkAllocateMemory FAILED");
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vkMemReq.size,
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return res;
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suballocType,
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memTypeIndex,
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(finalCreateInfo.flags & VMA_ALLOCATION_CREATE_PERSISTENT_MAP_BIT) != 0,
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finalCreateInfo.pUserData,
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pAllocation);
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if(res == VK_SUCCESS)
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{
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// Succeeded: AllocateOwnMemory function already filld pMemory, nothing more to do here.
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VMA_DEBUG_LOG(" Allocated as OwnMemory");
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return VK_SUCCESS;
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}
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else
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{
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// Everything failed: Return error code.
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VMA_DEBUG_LOG(" vkAllocateMemory FAILED");
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return res;
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}
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}
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}
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}
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}
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}
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}
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@ -7394,11 +7433,6 @@ VkResult vmaFindMemoryTypeIndex(
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break;
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break;
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}
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}
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if((pAllocationCreateInfo->flags & VMA_ALLOCATION_CREATE_PERSISTENT_MAP_BIT) != 0)
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{
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requiredFlags |= VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT;
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}
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*pMemoryTypeIndex = UINT32_MAX;
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*pMemoryTypeIndex = UINT32_MAX;
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uint32_t minCost = UINT32_MAX;
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uint32_t minCost = UINT32_MAX;
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for(uint32_t memTypeIndex = 0, memTypeBit = 1;
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for(uint32_t memTypeIndex = 0, memTypeBit = 1;
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