VK_QCOM_shader_multiple_wait_queues(3)

# VK_QCOM_shader_multiple_wait_queues(3) Manual Page

## Name

VK_QCOM_shader_multiple_wait_queues - device extension

## Registered Extension Number

305

## Revision

1

## Ratification Status

Not ratified

## Extension and Version Dependencies

VK_KHR_get_physical_device_properties2
or
Vulkan Version 1.1

## SPIR-V Dependencies

- SPV_QCOM_multiple_wait_queues

## Contact

- Matthew Netsch [GitHub]mnetsch

## Extension Proposal

VK_QCOM_shader_multiple_wait_queues

## Other Extension Metadata

Last Modified Date

  2026-05-04

Interactions and External Dependencies

  - This extension provides API support for `GLSL_QCOM_multiple_wait_queues`

Contributors

  - Matthew Netsch, Qualcomm Technologies, Inc.

  - Elina Kamenetskaya, Qualcomm Technologies, Inc.

  - Wooyoung Kim, Qualcomm Technologies, Inc.

## Description

This extension adds a new loop control hint to the SPIR-V execution environment, instructing the compiler that it should use multiple wait queues to optimize a loop.

This can improve performance for loops that have high latency instructions such as for `VK_KHR_cooperative_matrix` operations, by allowing the compiler to issue instructions for future iterations while waiting for the current iteration to complete.

## New Structures

- Extending VkPhysicalDeviceFeatures2, VkDeviceCreateInfo:

  - VkPhysicalDeviceShaderMultipleWaitQueuesFeaturesQCOM

- Extending VkPhysicalDeviceProperties2:

  - VkPhysicalDeviceShaderMultipleWaitQueuesPropertiesQCOM

## New Enum Constants

- `VK_QCOM_SHADER_MULTIPLE_WAIT_QUEUES_EXTENSION_NAME`

- `VK_QCOM_SHADER_MULTIPLE_WAIT_QUEUES_SPEC_VERSION`

- Extending VkStructureType:

  - VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_MULTIPLE_WAIT_QUEUES_FEATURES_QCOM

  - VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_MULTIPLE_WAIT_QUEUES_PROPERTIES_QCOM

## Version History

- Revision 1, 2026-05-04 (Matthew Netsch)

## 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