# VK_EXT_shader_image_atomic_int64(3) Manual Page

## Name

VK_EXT_shader_image_atomic_int64 - device extension

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## Registered Extension Number

235

## Revision

1

## Ratification Status

Ratified

## Extension and Version Dependencies

VK_KHR_get_physical_device_properties2
or
Vulkan Version 1.1

## SPIR-V Dependencies

- SPV_EXT_shader_image_int64

## Contact

- Tobias Hector [GitHub]tobski

## Other Extension Metadata

Last Modified Date

  2020-07-14

IP Status

  No known IP claims.

Interactions and External Dependencies

  - This extension provides API support for `GLSL_EXT_shader_image_int64`

Contributors

  - Matthaeus Chajdas, AMD

  - Graham Wihlidal, Epic Games

  - Tobias Hector, AMD

  - Jeff Bolz, Nvidia

  - Faith Ekstrand, Intel

## Description

This extension extends existing 64-bit integer atomic support to enable these operations on images as well.

When working with large 2- or 3-dimensional data sets (e.g. rasterization or screen-space effects), image accesses are generally more efficient than equivalent buffer accesses. This extension allows applications relying on 64-bit integer atomics in this manner to quickly improve performance with only relatively minor code changes.

64-bit integer atomic support is guaranteed for optimally tiled images with the `VK_FORMAT_R64_UINT` and `VK_FORMAT_R64_SINT` formats.

## New Structures

- Extending VkPhysicalDeviceFeatures2, VkDeviceCreateInfo:

  - VkPhysicalDeviceShaderImageAtomicInt64FeaturesEXT

## New Enum Constants

- `VK_EXT_SHADER_IMAGE_ATOMIC_INT64_EXTENSION_NAME`

- `VK_EXT_SHADER_IMAGE_ATOMIC_INT64_SPEC_VERSION`

- Extending VkStructureType:

  - `VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_IMAGE_ATOMIC_INT64_FEATURES_EXT`

## Version History

- Revision 1, 2020-07-14 (Tobias Hector)

  - Initial draft

## See Also

No cross-references are available

## 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.

## Copyright

Copyright 2014-2025 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0