# VK_EXT_ray_tracing_invocation_reorder(3) Manual Page

## Name

VK_EXT_ray_tracing_invocation_reorder - device extension

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## Registered Extension Number

582

## Revision

1

## Ratification Status

Ratified

## Extension and Version Dependencies

VK_KHR_ray_tracing_pipeline

## SPIR-V Dependencies

- SPV_EXT_shader_invocation_reorder

## Contact

- Eric Werness [GitHub]ewerness-nv

## Extension Proposal

VK_EXT_ray_tracing_invocation_reorder

## Other Extension Metadata

Last Modified Date

  2025-11-12

Interactions and External Dependencies

  - This extension provides API support for `GL_EXT_shader_invocation_reorder`

Contributors

  - Eric Werness, NVIDIA

  - Ashwin Lele, NVIDIA

  - Daniel Koch, NVIDIA

  - Vikram Kushwaha, NVIDIA

  - Piers Daniell, NVIDIA

  - Stu Smith, AMD

  - Aaron Hagan, AMD

  - Tyler Nowicki, AMD

  - Sebastian Neubauer, AMD

  - Radoslaw Drabinski, Intel

  - Sven Woop, Intel

  - Aleksandra Krstic, QUALCOMM

  - Andrew Garrard, Imagination Technologies

  - Mathieu Robart, Arm Limited

  - Tom Olson, Khronos

  - Ralph Potter, Samsung Electronics

  - Antonio Caggiano, LunarG

## Description

The ray tracing pipeline API provides some ability to reorder for locality, but it is useful to have more control over how the reordering happens and what information is included in the reordering. The shader API provides a hit object to contain result information from the hit which can be used as part of the explicit sorting plus options that contain an integer for hint bits to use to add more coherency.

## New Structures

- Extending VkPhysicalDeviceFeatures2, VkDeviceCreateInfo:

  - VkPhysicalDeviceRayTracingInvocationReorderFeaturesEXT

- Extending VkPhysicalDeviceProperties2:

  - VkPhysicalDeviceRayTracingInvocationReorderPropertiesEXT

## New Enums

- VkRayTracingInvocationReorderModeEXT

## New Enum Constants

- `VK_EXT_RAY_TRACING_INVOCATION_REORDER_EXTENSION_NAME`

- `VK_EXT_RAY_TRACING_INVOCATION_REORDER_SPEC_VERSION`

- Extending VkStructureType:

  - `VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_RAY_TRACING_INVOCATION_REORDER_FEATURES_EXT`

  - `VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_RAY_TRACING_INVOCATION_REORDER_PROPERTIES_EXT`

## Version History

- Revision 1, 2025-11-12 (Eric Werness)

  - Internal development - forked from NV

## 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