flutter_vma/flutter_skia_vma.cc - mirrors/engine - Git at Google

 // Copyright 2013 The Flutter Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 #include "flutter/flutter_vma/flutter_skia_vma.h"

 #include "flutter/fml/memory/ref_ptr.h"
 #include "flutter/vulkan/procs/vulkan_handle.h"
 #include "flutter/vulkan/procs/vulkan_proc_table.h"

 namespace flutter {

 sk_sp<skgpu::VulkanMemoryAllocator> FlutterSkiaVulkanMemoryAllocator::Make(
     uint32_t vulkan_api_version,
     VkInstance instance,
     VkPhysicalDevice physicalDevice,
     VkDevice device,
     const fml::RefPtr<vulkan::VulkanProcTable>& vk,
     bool mustUseCoherentHostVisibleMemory) {
 #define PROVIDE_PROC(tbl, proc, provider) tbl.vk##proc = provider->proc;

   VmaVulkanFunctions proc_table = {};
   proc_table.vkGetInstanceProcAddr = vk->NativeGetInstanceProcAddr();
   PROVIDE_PROC(proc_table, GetDeviceProcAddr, vk);
   PROVIDE_PROC(proc_table, GetPhysicalDeviceProperties, vk);
   PROVIDE_PROC(proc_table, GetPhysicalDeviceMemoryProperties, vk);
   PROVIDE_PROC(proc_table, AllocateMemory, vk);
   PROVIDE_PROC(proc_table, FreeMemory, vk);
   PROVIDE_PROC(proc_table, MapMemory, vk);
   PROVIDE_PROC(proc_table, UnmapMemory, vk);
   PROVIDE_PROC(proc_table, FlushMappedMemoryRanges, vk);
   PROVIDE_PROC(proc_table, InvalidateMappedMemoryRanges, vk);
   PROVIDE_PROC(proc_table, BindBufferMemory, vk);
   PROVIDE_PROC(proc_table, BindImageMemory, vk);
   PROVIDE_PROC(proc_table, GetBufferMemoryRequirements, vk);
   PROVIDE_PROC(proc_table, GetImageMemoryRequirements, vk);
   PROVIDE_PROC(proc_table, CreateBuffer, vk);
   PROVIDE_PROC(proc_table, DestroyBuffer, vk);
   PROVIDE_PROC(proc_table, CreateImage, vk);
   PROVIDE_PROC(proc_table, DestroyImage, vk);
   PROVIDE_PROC(proc_table, CmdCopyBuffer, vk);

 #define PROVIDE_PROC_COALESCE(tbl, proc, provider) \
   tbl.vk##proc##KHR = provider->proc ? provider->proc : provider->proc##KHR;
   // See the following link for why we have to pick either KHR version or
   // promoted non-KHR version:
   // https://github.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator/issues/203
   PROVIDE_PROC_COALESCE(proc_table, GetBufferMemoryRequirements2, vk);
   PROVIDE_PROC_COALESCE(proc_table, GetImageMemoryRequirements2, vk);
   PROVIDE_PROC_COALESCE(proc_table, BindBufferMemory2, vk);
   PROVIDE_PROC_COALESCE(proc_table, BindImageMemory2, vk);
   PROVIDE_PROC_COALESCE(proc_table, GetPhysicalDeviceMemoryProperties2, vk);
 #undef PROVIDE_PROC_COALESCE

 #undef PROVIDE_PROC

   VmaAllocatorCreateInfo allocator_info = {};
   allocator_info.vulkanApiVersion = vulkan_api_version;
   allocator_info.physicalDevice = physicalDevice;
   allocator_info.device = device;
   allocator_info.instance = instance;
   allocator_info.pVulkanFunctions = &proc_table;

   VmaAllocator allocator;
   vmaCreateAllocator(&allocator_info, &allocator);

   return sk_sp<FlutterSkiaVulkanMemoryAllocator>(
       new FlutterSkiaVulkanMemoryAllocator(vk, allocator,
                                            mustUseCoherentHostVisibleMemory));
 }

 FlutterSkiaVulkanMemoryAllocator::FlutterSkiaVulkanMemoryAllocator(
     fml::RefPtr<vulkan::VulkanProcTable> vk_proc_table,
     VmaAllocator allocator,
     bool mustUseCoherentHostVisibleMemory)
     : vk_proc_table_(std::move(vk_proc_table)),
       allocator_(allocator),
       must_use_coherent_host_visible_memory_(mustUseCoherentHostVisibleMemory) {
 }

 FlutterSkiaVulkanMemoryAllocator::~FlutterSkiaVulkanMemoryAllocator() {
   vmaDestroyAllocator(allocator_);
   allocator_ = VK_NULL_HANDLE;
 }

 VkResult FlutterSkiaVulkanMemoryAllocator::allocateImageMemory(
     VkImage image,
     uint32_t allocationPropertyFlags,
     skgpu::VulkanBackendMemory* backendMemory) {
   VmaAllocationCreateInfo info;
   info.flags = 0;
   info.usage = VMA_MEMORY_USAGE_UNKNOWN;
   info.requiredFlags = VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT;
   info.preferredFlags = 0;
   info.memoryTypeBits = 0;
   info.pool = VK_NULL_HANDLE;
   info.pUserData = nullptr;

   if (kDedicatedAllocation_AllocationPropertyFlag & allocationPropertyFlags) {
     info.flags |= VMA_ALLOCATION_CREATE_DEDICATED_MEMORY_BIT;
   }
   if (kLazyAllocation_AllocationPropertyFlag & allocationPropertyFlags) {
     info.requiredFlags |= VK_MEMORY_PROPERTY_LAZILY_ALLOCATED_BIT;
   }
   if (kProtected_AllocationPropertyFlag & allocationPropertyFlags) {
     info.requiredFlags |= VK_MEMORY_PROPERTY_PROTECTED_BIT;
   }

   VmaAllocation allocation;
   VkResult result =
       vmaAllocateMemoryForImage(allocator_, image, &info, &allocation, nullptr);
   if (VK_SUCCESS == result) {
     *backendMemory = reinterpret_cast<skgpu::VulkanBackendMemory>(allocation);
   }
   return result;
 }

 VkResult FlutterSkiaVulkanMemoryAllocator::allocateBufferMemory(
     VkBuffer buffer,
     BufferUsage usage,
     uint32_t allocationPropertyFlags,
     skgpu::VulkanBackendMemory* backendMemory) {
   VmaAllocationCreateInfo info;
   info.flags = 0;
   info.usage = VMA_MEMORY_USAGE_UNKNOWN;
   info.memoryTypeBits = 0;
   info.pool = VK_NULL_HANDLE;
   info.pUserData = nullptr;

   switch (usage) {
     case BufferUsage::kGpuOnly:
       info.requiredFlags = VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT;
       info.preferredFlags = 0;
       break;
     case BufferUsage::kCpuWritesGpuReads:
       // When doing cpu writes and gpu reads the general rule of thumb is to use
       // coherent memory. Though this depends on the fact that we are not doing
       // any cpu reads and the cpu writes are sequential. For sparse writes we'd
       // want cpu cached memory, however we don't do these types of writes in
       // Skia.
       //
       // TODO (kaushikiska): In the future there may be times where specific
       // types of memory could benefit from a coherent and cached memory.
       // Typically these allow for the gpu to read cpu writes from the cache
       // without needing to flush the writes throughout the cache. The reverse
       // is not true and GPU writes tend to invalidate the cache regardless.
       // Also these gpu cache read access are typically lower bandwidth than
       // non-cached memory. For now Skia doesn't really have a need or want of
       // this type of memory. But if we ever do we could pass in an
       // AllocationPropertyFlag that requests the cached property.
       info.requiredFlags = VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT |
                            VK_MEMORY_PROPERTY_HOST_COHERENT_BIT;
       info.preferredFlags = VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT;
       break;
     case BufferUsage::kTransfersFromCpuToGpu:
       info.requiredFlags = VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT |
                            VK_MEMORY_PROPERTY_HOST_COHERENT_BIT;
       info.preferredFlags = 0;
       break;
     case BufferUsage::kTransfersFromGpuToCpu:
       info.requiredFlags = VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT;
       info.preferredFlags = VK_MEMORY_PROPERTY_HOST_CACHED_BIT;
       break;
   }

   if (must_use_coherent_host_visible_memory_ &&
       (info.requiredFlags & VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT)) {
     info.requiredFlags |= VK_MEMORY_PROPERTY_HOST_COHERENT_BIT;
   }
   if (kDedicatedAllocation_AllocationPropertyFlag & allocationPropertyFlags) {
     info.flags |= VMA_ALLOCATION_CREATE_DEDICATED_MEMORY_BIT;
   }
   if ((kLazyAllocation_AllocationPropertyFlag & allocationPropertyFlags) &&
       BufferUsage::kGpuOnly == usage) {
     info.preferredFlags |= VK_MEMORY_PROPERTY_LAZILY_ALLOCATED_BIT;
   }

   if (kPersistentlyMapped_AllocationPropertyFlag & allocationPropertyFlags) {
     SkASSERT(BufferUsage::kGpuOnly != usage);
     info.flags |= VMA_ALLOCATION_CREATE_MAPPED_BIT;
   }

   VmaAllocation allocation;
   VkResult result = vmaAllocateMemoryForBuffer(allocator_, buffer, &info,
                                                &allocation, nullptr);
   if (VK_SUCCESS == result) {
     *backendMemory = reinterpret_cast<skgpu::VulkanBackendMemory>(allocation);
   }

   return result;
 }

 void FlutterSkiaVulkanMemoryAllocator::freeMemory(
     const skgpu::VulkanBackendMemory& memoryHandle) {
   const VmaAllocation allocation =
       reinterpret_cast<const VmaAllocation>(memoryHandle);
   vmaFreeMemory(allocator_, allocation);
 }

 void FlutterSkiaVulkanMemoryAllocator::getAllocInfo(
     const skgpu::VulkanBackendMemory& memoryHandle,
     skgpu::VulkanAlloc* alloc) const {
   const VmaAllocation allocation =
       reinterpret_cast<const VmaAllocation>(memoryHandle);
   VmaAllocationInfo vmaInfo;
   vmaGetAllocationInfo(allocator_, allocation, &vmaInfo);

   VkMemoryPropertyFlags memFlags;
   vmaGetMemoryTypeProperties(allocator_, vmaInfo.memoryType, &memFlags);

   uint32_t flags = 0;
   if (VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT & memFlags) {
     flags |= skgpu::VulkanAlloc::kMappable_Flag;
   }
   if (!(VK_MEMORY_PROPERTY_HOST_COHERENT_BIT & memFlags)) {
     flags |= skgpu::VulkanAlloc::kNoncoherent_Flag;
   }
   if (VK_MEMORY_PROPERTY_LAZILY_ALLOCATED_BIT & memFlags) {
     flags |= skgpu::VulkanAlloc::kLazilyAllocated_Flag;
   }

   alloc->fMemory = vmaInfo.deviceMemory;
   alloc->fOffset = vmaInfo.offset;
   alloc->fSize = vmaInfo.size;
   alloc->fFlags = flags;
   alloc->fBackendMemory = memoryHandle;
 }

 VkResult FlutterSkiaVulkanMemoryAllocator::mapMemory(
     const skgpu::VulkanBackendMemory& memoryHandle,
     void** data) {
   const VmaAllocation allocation =
       reinterpret_cast<const VmaAllocation>(memoryHandle);
   return vmaMapMemory(allocator_, allocation, data);
 }

 void FlutterSkiaVulkanMemoryAllocator::unmapMemory(
     const skgpu::VulkanBackendMemory& memoryHandle) {
   const VmaAllocation allocation =
       reinterpret_cast<const VmaAllocation>(memoryHandle);
   vmaUnmapMemory(allocator_, allocation);
 }

 VkResult FlutterSkiaVulkanMemoryAllocator::flushMemory(
     const skgpu::VulkanBackendMemory& memoryHandle,
     VkDeviceSize offset,
     VkDeviceSize size) {
   const VmaAllocation allocation =
       reinterpret_cast<const VmaAllocation>(memoryHandle);
   return vmaFlushAllocation(allocator_, allocation, offset, size);
 }

 VkResult FlutterSkiaVulkanMemoryAllocator::invalidateMemory(
     const skgpu::VulkanBackendMemory& memoryHandle,
     VkDeviceSize offset,
     VkDeviceSize size) {
   const VmaAllocation allocation =
       reinterpret_cast<const VmaAllocation>(memoryHandle);
   return vmaInvalidateAllocation(allocator_, allocation, offset, size);
 }

 std::pair<uint64_t, uint64_t>
 FlutterSkiaVulkanMemoryAllocator::totalAllocatedAndUsedMemory() const {
   VmaTotalStatistics stats;
   vmaCalculateStatistics(allocator_, &stats);
   return {stats.total.statistics.blockBytes,
           stats.total.statistics.allocationBytes};
 }

 }  // namespace flutter
	// Copyright 2013 The Flutter Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	#include "flutter/flutter_vma/flutter_skia_vma.h"

	#include "flutter/fml/memory/ref_ptr.h"
	#include "flutter/vulkan/procs/vulkan_handle.h"
	#include "flutter/vulkan/procs/vulkan_proc_table.h"

	namespace flutter {

	sk_sp<skgpu::VulkanMemoryAllocator> FlutterSkiaVulkanMemoryAllocator::Make(
	uint32_t vulkan_api_version,
	VkInstance instance,
	VkPhysicalDevice physicalDevice,
	VkDevice device,
	const fml::RefPtr<vulkan::VulkanProcTable>& vk,
	bool mustUseCoherentHostVisibleMemory) {
	#define PROVIDE_PROC(tbl, proc, provider) tbl.vk##proc = provider->proc;

	VmaVulkanFunctions proc_table = {};
	proc_table.vkGetInstanceProcAddr = vk->NativeGetInstanceProcAddr();
	PROVIDE_PROC(proc_table, GetDeviceProcAddr, vk);
	PROVIDE_PROC(proc_table, GetPhysicalDeviceProperties, vk);
	PROVIDE_PROC(proc_table, GetPhysicalDeviceMemoryProperties, vk);
	PROVIDE_PROC(proc_table, AllocateMemory, vk);
	PROVIDE_PROC(proc_table, FreeMemory, vk);
	PROVIDE_PROC(proc_table, MapMemory, vk);
	PROVIDE_PROC(proc_table, UnmapMemory, vk);
	PROVIDE_PROC(proc_table, FlushMappedMemoryRanges, vk);
	PROVIDE_PROC(proc_table, InvalidateMappedMemoryRanges, vk);
	PROVIDE_PROC(proc_table, BindBufferMemory, vk);
	PROVIDE_PROC(proc_table, BindImageMemory, vk);
	PROVIDE_PROC(proc_table, GetBufferMemoryRequirements, vk);
	PROVIDE_PROC(proc_table, GetImageMemoryRequirements, vk);
	PROVIDE_PROC(proc_table, CreateBuffer, vk);
	PROVIDE_PROC(proc_table, DestroyBuffer, vk);
	PROVIDE_PROC(proc_table, CreateImage, vk);
	PROVIDE_PROC(proc_table, DestroyImage, vk);
	PROVIDE_PROC(proc_table, CmdCopyBuffer, vk);

	#define PROVIDE_PROC_COALESCE(tbl, proc, provider) \
	tbl.vk##proc##KHR = provider->proc ? provider->proc : provider->proc##KHR;
	// See the following link for why we have to pick either KHR version or
	// promoted non-KHR version:
	// https://github.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator/issues/203
	PROVIDE_PROC_COALESCE(proc_table, GetBufferMemoryRequirements2, vk);
	PROVIDE_PROC_COALESCE(proc_table, GetImageMemoryRequirements2, vk);
	PROVIDE_PROC_COALESCE(proc_table, BindBufferMemory2, vk);
	PROVIDE_PROC_COALESCE(proc_table, BindImageMemory2, vk);
	PROVIDE_PROC_COALESCE(proc_table, GetPhysicalDeviceMemoryProperties2, vk);
	#undef PROVIDE_PROC_COALESCE

	#undef PROVIDE_PROC

	VmaAllocatorCreateInfo allocator_info = {};
	allocator_info.vulkanApiVersion = vulkan_api_version;
	allocator_info.physicalDevice = physicalDevice;
	allocator_info.device = device;
	allocator_info.instance = instance;
	allocator_info.pVulkanFunctions = &proc_table;

	VmaAllocator allocator;
	vmaCreateAllocator(&allocator_info, &allocator);

	return sk_sp<FlutterSkiaVulkanMemoryAllocator>(
	new FlutterSkiaVulkanMemoryAllocator(vk, allocator,
	mustUseCoherentHostVisibleMemory));
	}

	FlutterSkiaVulkanMemoryAllocator::FlutterSkiaVulkanMemoryAllocator(
	fml::RefPtr<vulkan::VulkanProcTable> vk_proc_table,
	VmaAllocator allocator,
	bool mustUseCoherentHostVisibleMemory)
	: vk_proc_table_(std::move(vk_proc_table)),
	allocator_(allocator),
	must_use_coherent_host_visible_memory_(mustUseCoherentHostVisibleMemory) {
	}

	FlutterSkiaVulkanMemoryAllocator::~FlutterSkiaVulkanMemoryAllocator() {
	vmaDestroyAllocator(allocator_);
	allocator_ = VK_NULL_HANDLE;
	}

	VkResult FlutterSkiaVulkanMemoryAllocator::allocateImageMemory(
	VkImage image,
	uint32_t allocationPropertyFlags,
	skgpu::VulkanBackendMemory* backendMemory) {
	VmaAllocationCreateInfo info;
	info.flags = 0;
	info.usage = VMA_MEMORY_USAGE_UNKNOWN;
	info.requiredFlags = VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT;
	info.preferredFlags = 0;
	info.memoryTypeBits = 0;
	info.pool = VK_NULL_HANDLE;
	info.pUserData = nullptr;

	if (kDedicatedAllocation_AllocationPropertyFlag & allocationPropertyFlags) {
	info.flags \|= VMA_ALLOCATION_CREATE_DEDICATED_MEMORY_BIT;
	}
	if (kLazyAllocation_AllocationPropertyFlag & allocationPropertyFlags) {
	info.requiredFlags \|= VK_MEMORY_PROPERTY_LAZILY_ALLOCATED_BIT;
	}
	if (kProtected_AllocationPropertyFlag & allocationPropertyFlags) {
	info.requiredFlags \|= VK_MEMORY_PROPERTY_PROTECTED_BIT;
	}

	VmaAllocation allocation;
	VkResult result =
	vmaAllocateMemoryForImage(allocator_, image, &info, &allocation, nullptr);
	if (VK_SUCCESS == result) {
	*backendMemory = reinterpret_cast<skgpu::VulkanBackendMemory>(allocation);
	}
	return result;
	}

	VkResult FlutterSkiaVulkanMemoryAllocator::allocateBufferMemory(
	VkBuffer buffer,
	BufferUsage usage,
	uint32_t allocationPropertyFlags,
	skgpu::VulkanBackendMemory* backendMemory) {
	VmaAllocationCreateInfo info;
	info.flags = 0;
	info.usage = VMA_MEMORY_USAGE_UNKNOWN;
	info.memoryTypeBits = 0;
	info.pool = VK_NULL_HANDLE;
	info.pUserData = nullptr;

	switch (usage) {
	case BufferUsage::kGpuOnly:
	info.requiredFlags = VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT;
	info.preferredFlags = 0;
	break;
	case BufferUsage::kCpuWritesGpuReads:
	// When doing cpu writes and gpu reads the general rule of thumb is to use
	// coherent memory. Though this depends on the fact that we are not doing
	// any cpu reads and the cpu writes are sequential. For sparse writes we'd
	// want cpu cached memory, however we don't do these types of writes in
	// Skia.
	//
	// TODO (kaushikiska): In the future there may be times where specific
	// types of memory could benefit from a coherent and cached memory.
	// Typically these allow for the gpu to read cpu writes from the cache
	// without needing to flush the writes throughout the cache. The reverse
	// is not true and GPU writes tend to invalidate the cache regardless.
	// Also these gpu cache read access are typically lower bandwidth than
	// non-cached memory. For now Skia doesn't really have a need or want of
	// this type of memory. But if we ever do we could pass in an
	// AllocationPropertyFlag that requests the cached property.
	info.requiredFlags = VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT \|
	VK_MEMORY_PROPERTY_HOST_COHERENT_BIT;
	info.preferredFlags = VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT;
	break;
	case BufferUsage::kTransfersFromCpuToGpu:
	info.requiredFlags = VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT \|
	VK_MEMORY_PROPERTY_HOST_COHERENT_BIT;
	info.preferredFlags = 0;
	break;
	case BufferUsage::kTransfersFromGpuToCpu:
	info.requiredFlags = VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT;
	info.preferredFlags = VK_MEMORY_PROPERTY_HOST_CACHED_BIT;
	break;
	}

	if (must_use_coherent_host_visible_memory_ &&
	(info.requiredFlags & VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT)) {
	info.requiredFlags \|= VK_MEMORY_PROPERTY_HOST_COHERENT_BIT;
	}
	if (kDedicatedAllocation_AllocationPropertyFlag & allocationPropertyFlags) {
	info.flags \|= VMA_ALLOCATION_CREATE_DEDICATED_MEMORY_BIT;
	}
	if ((kLazyAllocation_AllocationPropertyFlag & allocationPropertyFlags) &&
	BufferUsage::kGpuOnly == usage) {
	info.preferredFlags \|= VK_MEMORY_PROPERTY_LAZILY_ALLOCATED_BIT;
	}

	if (kPersistentlyMapped_AllocationPropertyFlag & allocationPropertyFlags) {
	SkASSERT(BufferUsage::kGpuOnly != usage);
	info.flags \|= VMA_ALLOCATION_CREATE_MAPPED_BIT;
	}

	VmaAllocation allocation;
	VkResult result = vmaAllocateMemoryForBuffer(allocator_, buffer, &info,
	&allocation, nullptr);
	if (VK_SUCCESS == result) {
	*backendMemory = reinterpret_cast<skgpu::VulkanBackendMemory>(allocation);
	}

	return result;
	}

	void FlutterSkiaVulkanMemoryAllocator::freeMemory(
	const skgpu::VulkanBackendMemory& memoryHandle) {
	const VmaAllocation allocation =
	reinterpret_cast<const VmaAllocation>(memoryHandle);
	vmaFreeMemory(allocator_, allocation);
	}

	void FlutterSkiaVulkanMemoryAllocator::getAllocInfo(
	const skgpu::VulkanBackendMemory& memoryHandle,
	skgpu::VulkanAlloc* alloc) const {
	const VmaAllocation allocation =
	reinterpret_cast<const VmaAllocation>(memoryHandle);
	VmaAllocationInfo vmaInfo;
	vmaGetAllocationInfo(allocator_, allocation, &vmaInfo);

	VkMemoryPropertyFlags memFlags;
	vmaGetMemoryTypeProperties(allocator_, vmaInfo.memoryType, &memFlags);

	uint32_t flags = 0;
	if (VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT & memFlags) {
	flags \|= skgpu::VulkanAlloc::kMappable_Flag;
	}
	if (!(VK_MEMORY_PROPERTY_HOST_COHERENT_BIT & memFlags)) {
	flags \|= skgpu::VulkanAlloc::kNoncoherent_Flag;
	}
	if (VK_MEMORY_PROPERTY_LAZILY_ALLOCATED_BIT & memFlags) {
	flags \|= skgpu::VulkanAlloc::kLazilyAllocated_Flag;
	}

	alloc->fMemory = vmaInfo.deviceMemory;
	alloc->fOffset = vmaInfo.offset;
	alloc->fSize = vmaInfo.size;
	alloc->fFlags = flags;
	alloc->fBackendMemory = memoryHandle;
	}

	VkResult FlutterSkiaVulkanMemoryAllocator::mapMemory(
	const skgpu::VulkanBackendMemory& memoryHandle,
	void** data) {
	const VmaAllocation allocation =
	reinterpret_cast<const VmaAllocation>(memoryHandle);
	return vmaMapMemory(allocator_, allocation, data);
	}

	void FlutterSkiaVulkanMemoryAllocator::unmapMemory(
	const skgpu::VulkanBackendMemory& memoryHandle) {
	const VmaAllocation allocation =
	reinterpret_cast<const VmaAllocation>(memoryHandle);
	vmaUnmapMemory(allocator_, allocation);
	}

	VkResult FlutterSkiaVulkanMemoryAllocator::flushMemory(
	const skgpu::VulkanBackendMemory& memoryHandle,
	VkDeviceSize offset,
	VkDeviceSize size) {
	const VmaAllocation allocation =
	reinterpret_cast<const VmaAllocation>(memoryHandle);
	return vmaFlushAllocation(allocator_, allocation, offset, size);
	}

	VkResult FlutterSkiaVulkanMemoryAllocator::invalidateMemory(
	const skgpu::VulkanBackendMemory& memoryHandle,
	VkDeviceSize offset,
	VkDeviceSize size) {
	const VmaAllocation allocation =
	reinterpret_cast<const VmaAllocation>(memoryHandle);
	return vmaInvalidateAllocation(allocator_, allocation, offset, size);
	}

	std::pair<uint64_t, uint64_t>
	FlutterSkiaVulkanMemoryAllocator::totalAllocatedAndUsedMemory() const {
	VmaTotalStatistics stats;
	vmaCalculateStatistics(allocator_, &stats);
	return {stats.total.statistics.blockBytes,
	stats.total.statistics.allocationBytes};
	}

	} // namespace flutter