# VK_EXT_shader_atomic_float(3) Manual Page

## Name

VK_EXT_shader_atomic_float - device extension

Loading… please wait.

## Registered Extension Number

261

## Revision

1

## Ratification Status

Ratified

## Extension and Version Dependencies

VK_KHR_get_physical_device_properties2
or
Vulkan Version 1.1

## API Interactions

- Interacts with VkPhysicalDeviceShaderAtomicFloatFeaturesEXT::sparseImageFloat32AtomicAdd

- Interacts with VkPhysicalDeviceShaderAtomicFloatFeaturesEXT::sparseImageFloat32Atomics

## SPIR-V Dependencies

- SPV_EXT_shader_atomic_float_add

## Contact

- Vikram Kushwaha [GitHub]vkushwaha-nv

## Other Extension Metadata

Last Modified Date

  2020-07-15

IP Status

  No known IP claims.

Interactions and External Dependencies

  - This extension provides API support for `GL_EXT_shader_atomic_float`

Contributors

  - Vikram Kushwaha, NVIDIA

  - Jeff Bolz, NVIDIA

## Description

This extension allows a shader to contain floating-point atomic operations on buffer, workgroup, and image memory. It also advertises the SPIR-V `AtomicFloat32AddEXT` and `AtomicFloat64AddEXT` capabilities that allows atomic addition on floating-points numbers. The supported operations include `OpAtomicFAddEXT`, `OpAtomicExchange`, `OpAtomicLoad` and `OpAtomicStore`.

## New Structures

- Extending VkPhysicalDeviceFeatures2, VkDeviceCreateInfo:

  - VkPhysicalDeviceShaderAtomicFloatFeaturesEXT

## New Enum Constants

- `VK_EXT_SHADER_ATOMIC_FLOAT_EXTENSION_NAME`

- `VK_EXT_SHADER_ATOMIC_FLOAT_SPEC_VERSION`

- Extending VkStructureType:

  - `VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_ATOMIC_FLOAT_FEATURES_EXT`

## New SPIR-V Capabilities

- `AtomicFloat32AddEXT`

- `AtomicFloat64AddEXT`

## Version History

- Revision 1, 2020-07-15 (Vikram Kushwaha)

  - Internal revisions

## 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