# VK_KHR_shader_quad_control(3) Manual Page

## Name

VK_KHR_shader_quad_control - device extension

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## Registered Extension Number

236

## Revision

1

## Ratification Status

Ratified

## Extension and Version Dependencies

Vulkan Version 1.1
and
VK_KHR_vulkan_memory_model
and
VK_KHR_shader_maximal_reconvergence

## SPIR-V Dependencies

- SPV_KHR_quad_control

## Contact

- Tobias Hector [GitHub]tobski

## Extension Proposal

VK_KHR_shader_quad_control

## Other Extension Metadata

Last Modified Date

  2023-11-01

IP Status

  No known IP claims.

Contributors

  - Tobias Hector, AMD

  - Bill Licea-Kane, Qualcomm

  - Graeme Leese, Broadcom

  - Jan-Harald Fredriksen, Arm

  - Nicolai Hähnle, AMD

  - Jeff Bolz, NVidia

  - Alan Baker, Google

  - Hans-Kristian Arntzen, Valve

## Description

This extension adds new quad any/all operations, requires that derivatives are well-defined in quad-uniform control flow, and adds the ability to require helper invocations participate in group operations.

## New Structures

- Extending VkPhysicalDeviceFeatures2, VkDeviceCreateInfo:

  - VkPhysicalDeviceShaderQuadControlFeaturesKHR

## New Enum Constants

- `VK_KHR_SHADER_QUAD_CONTROL_EXTENSION_NAME`

- `VK_KHR_SHADER_QUAD_CONTROL_SPEC_VERSION`

- Extending VkStructureType:

  - `VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_QUAD_CONTROL_FEATURES_KHR`

## New SPIR-V Capabilities

- QuadControlKHR

## Version History

- Revision 1, 2023-11-01 (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 2014-2024 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0