Registered Extension Number

575

Revision

1

Ratification Status

Ratified

Extension and Version Dependencies

Contact

Extension Proposal

Other Extension Metadata

Last Modified Date

2025-01-07

Interactions and External Dependencies
Contributors
  • Jon Leech, Khronos

  • Mike Blumenkrantz, Valve

  • Spencer Fricke, LunarG

  • Jan-Harald Fredriksen, ARM

  • Piers Daniell, NVIDIA

  • Matthew Netsch, Qualcomm

  • Ricardo Garcia, Igalia

  • Lionel Landwerlin, Intel

  • Rick Hammerstone, Qualcomm

  • Daniel Story, Nintendo

  • Hans-Kristian Arntzen, Valve

  • Caterina Shablia, Collabora

  • Georg Lehmann, Valve

  • Shahbaz Youssefi, Google

  • Tobias Hector, AMD

Description

VK_KHR_maintenance8 adds a collection of minor features, none of which would warrant an entire extension of their own.

The new features are as follows:

  • Allow copies between depth/stencil and “matching” color attachments

  • Allow dstCache in vkMergePipelineCaches to be implicitly synchronized.

  • Require src/dst sync scopes to work when doing queue family ownership transfers

  • Support Offset (as an alternative to ConstOffset) image operand in texture sampling and fetch operations

  • Use the SPIR-V definition of OpSRem and OpSMod, making these operations produce well-defined results for negative operands

  • Loosen layer restrictions when blitting from 3D images to other image types

  • Add space for an additional 64 access flags for use with VkMemoryBarrier2, VkBufferMemoryBarrier2, and VkImageMemoryBarrier2

New Structures

New Enums

New Bitmasks

New Enum Constants

  • VK_KHR_MAINTENANCE_8_EXTENSION_NAME

  • VK_KHR_MAINTENANCE_8_SPEC_VERSION

  • Extending VkDependencyFlagBits:

    • VK_DEPENDENCY_QUEUE_FAMILY_OWNERSHIP_TRANSFER_USE_ALL_STAGES_BIT_KHR

  • Extending VkPipelineCacheCreateFlagBits:

    • VK_PIPELINE_CACHE_CREATE_INTERNALLY_SYNCHRONIZED_MERGE_BIT_KHR

  • Extending VkStructureType:

    • VK_STRUCTURE_TYPE_MEMORY_BARRIER_ACCESS_FLAGS_3_KHR

    • VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MAINTENANCE_8_FEATURES_KHR

Issues

None.

Version History

  • Revision 1, 2024-06-20 (Jon Leech)

    • Initial revision

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 2014-2025 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0