# VK_EXT_dynamic_rendering_unused_attachments(3) Manual Page

## Name

VK_EXT_dynamic_rendering_unused_attachments - device extension

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## Registered Extension Number

500

## Revision

1

## Ratification Status

Ratified

## Extension and Version Dependencies

VK_KHR_get_physical_device_properties2
or
Vulkan Version 1.1
and
VK_KHR_dynamic_rendering
or
Vulkan Version 1.3

## Contact

- Piers Daniell [GitHub]pdaniell-nv

## Extension Proposal

VK_EXT_dynamic_rendering_unused_attachments

## Other Extension Metadata

Last Modified Date

  2023-05-22

IP Status

  No known IP claims.

Contributors

  - Daniel Story, Nintendo

  - Hans-Kristian Arntzen, Valve

  - Jan-Harald Fredriksen, Arm

  - James Fitzpatrick, Imagination Technologies

  - Pan Gao, Huawei Technologies

  - Ricardo Garcia, Igalia

  - Stu Smith, AMD

## Description

This extension lifts some restrictions in the `VK_KHR_dynamic_rendering` extension to allow render pass instances and bound pipelines within those render pass instances to have an unused attachment specified in one but not the other. It also allows pipelines to use different formats in a render pass as long the attachment is NULL.

## New Structures

- Extending VkPhysicalDeviceFeatures2, VkDeviceCreateInfo:

  - VkPhysicalDeviceDynamicRenderingUnusedAttachmentsFeaturesEXT

## New Enum Constants

- `VK_EXT_DYNAMIC_RENDERING_UNUSED_ATTACHMENTS_EXTENSION_NAME`

- `VK_EXT_DYNAMIC_RENDERING_UNUSED_ATTACHMENTS_SPEC_VERSION`

- Extending VkStructureType:

  - `VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_DYNAMIC_RENDERING_UNUSED_ATTACHMENTS_FEATURES_EXT`

## Issues

None.

## Version History

- Revision 1, 2023-05-22 (Piers Daniell)

  - Internal revisions

## 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