Registered Extension Number




Extension and Version Dependencies

Deprecation state

Other Extension Metadata

Last Modified Date


Interactions and External Dependencies
  • Aaron Hagan, AMD

  • Daniel Rakos, AMD

  • Jeff Bolz, NVIDIA

  • Neil Henning, Codeplay


This extension advertises the SPIR-V Int64Atomics capability for Vulkan, which allows a shader to contain 64-bit atomic operations on signed and unsigned integers. The supported operations include OpAtomicMin, OpAtomicMax, OpAtomicAnd, OpAtomicOr, OpAtomicXor, OpAtomicAdd, OpAtomicExchange, and OpAtomicCompareExchange.

Promotion to Vulkan 1.2

All functionality in this extension is included in core Vulkan 1.2, with the KHR suffix omitted. However, if Vulkan 1.2 is supported and this extension is not, the shaderBufferInt64Atomics capability is optional. The original type, enum and command names are still available as aliases of the core functionality.

New Enum Constants



  • Extending VkStructureType:


New SPIR-V Capabilities

Version History

  • Revision 1, 2018-07-05 (Aaron Hagan)

    • Internal revisions

See Also

Document Notes

For more information, see the Vulkan Specification

This page is a generated document. Fixes and changes should be made to the generator scripts, not directly.

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SPDX-License-Identifier: CC-BY-4.0