# VK_VALVE_shader_mixed_float_dot_product(3) Manual Page

## Name

VK_VALVE_shader_mixed_float_dot_product - device extension

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## Registered Extension Number

674

## Revision

1

## Ratification Status

Not ratified

## Extension and Version Dependencies

VK_KHR_get_physical_device_properties2
or
Vulkan Version 1.1
and
VK_KHR_shader_float16_int8
or
Vulkan Version 1.2

## SPIR-V Dependencies

- SPV_VALVE_mixed_float_dot_product

## Contact

- Georg Lehmann [GitHub]DadSchoorse

## Other Extension Metadata

Last Modified Date

  2026-02-04

IP Status

  No known IP claims.

Contributors

  - Georg Lehmann, Valve

  - Mike Blumenkrantz, Valve

## Description

This extension enables support for mixed precision dot product accumulate operations in shaders as defined in `SPV_VALVE_mixed_float_dot_product`.

## New Structures

- Extending VkPhysicalDeviceFeatures2, VkDeviceCreateInfo:

  - VkPhysicalDeviceShaderMixedFloatDotProductFeaturesVALVE

## New Enum Constants

- `VK_VALVE_SHADER_MIXED_FLOAT_DOT_PRODUCT_EXTENSION_NAME`

- `VK_VALVE_SHADER_MIXED_FLOAT_DOT_PRODUCT_SPEC_VERSION`

- Extending VkStructureType:

  - VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_MIXED_FLOAT_DOT_PRODUCT_FEATURES_VALVE

## New SPIR-V Capabilities

- DotProductFloat16AccFloat32VALVE

- DotProductFloat16AccFloat16VALVE

- DotProductBFloat16AccVALVE

- DotProductFloat8AccFloat32VALVE

## Version History

- Revision 1, 2026-02-04 (Georg Lehmann)

  - Initial specification

## 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 2014-2026 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0