D3D12 Memory Allocator

Version 3.3.0 (2026-11-09)

Copyright (c) 2019-2026 Advanced Micro Devices, Inc. All rights reserved.
License: MIT

Documentation of all members: D3D12MemAlloc.h

Table of contents

• Frequently asked questions
• Quick start
  • Project setup
  • Creating resources
  • Resource reference counting
  • Mapping memory
  • Helper structures
• Custom memory pools
• Optimal resource allocation
  • Avoiding running out of memory
  • Allocation performance
  • Sub-allocating buffers
  • Residency priority
  • GPU upload heap
  • Committed versus placed resources
  • Resource alignment
• Defragmentation
• Statistics
• Resource aliasing (overlap)
• Linear allocation algorithm
• Virtual allocator
• Configuration
  • Custom CPU memory allocator
  • Debug margins
• General considerations
  • Thread safety
  • Versioning and compatibility
  • Features not supported

Web links

• Direct3D 12 Memory Allocator at GPUOpen.com - product page
• GPUOpen-LibrariesAndSDKs/D3D12MemoryAllocator at GitHub.com - source code repository