VK_NV_ray_tracing_invocation_reorder(3)

# VK_NV_ray_tracing_invocation_reorder(3) Manual Page

## Name

VK_NV_ray_tracing_invocation_reorder - device extension

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## Registered Extension Number

491

## Revision

1

## Extension and Version Dependencies

VK_KHR_ray_tracing_pipeline

## Contact

- Eric Werness ewerness-nv

## Other Extension Metadata

Last Modified Date

  2022-11-02

Interactions and External Dependencies

  - This extension requires `SPV_NV_shader_invocation_reorder`

  - This extension provides API support for `GL_NV_shader_invocation_reorder`

Contributors

  - Eric Werness, NVIDIA

  - Ashwin Lele, NVIDIA

## 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 locality.

## New Structures

- Extending VkPhysicalDeviceFeatures2, VkDeviceCreateInfo:

  - VkPhysicalDeviceRayTracingInvocationReorderFeaturesNV

- Extending VkPhysicalDeviceProperties2:

  - VkPhysicalDeviceRayTracingInvocationReorderPropertiesNV

## New Enums

- VkRayTracingInvocationReorderModeNV

## New Enum Constants

- `VK_NV_RAY_TRACING_INVOCATION_REORDER_EXTENSION_NAME`

- `VK_NV_RAY_TRACING_INVOCATION_REORDER_SPEC_VERSION`

- Extending VkStructureType:

  - `VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_RAY_TRACING_INVOCATION_REORDER_FEATURES_NV`

  - `VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_RAY_TRACING_INVOCATION_REORDER_PROPERTIES_NV`

## Version History

- Revision 1, 2020-09-12 (Eric Werness, Ashwin Lele)

  - Initial external release

## See Also

VkPhysicalDeviceRayTracingInvocationReorderFeaturesNV, VkPhysicalDeviceRayTracingInvocationReorderPropertiesNV, VkRayTracingInvocationReorderModeNV

## 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 2014-2023 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0