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.

VK_KHR_shader_atomic_int64

Name String

VK_KHR_shader_atomic_int64

Extension Type

Device extension

Registered Extension Number

181

Revision

1

Extension and Version Dependencies

VK_KHR_get_physical_device_properties2

Deprecation state

• Promoted to Vulkan 1.2

Contact

• Aaron Hagan ahagan

Other Extension Metadata

Last Modified Date

2018-07-05

Interactions and External Dependencies

• Promoted to Vulkan 1.2 Core
• This extension provides API support for GL_ARB_gpu_shader_int64 and GL_EXT_shader_atomic_int64

Contributors

• Aaron Hagan, AMD
• Daniel Rakos, AMD
• Jeff Bolz, NVIDIA
• Neil Henning, Codeplay