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VK_KHR_maintenance8

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