Registered Extension Number

471

Revision

1

Ratification Status

Ratified

Extension and Version Dependencies

     Vulkan Version 1.1
     and
     VK_KHR_dynamic_rendering
or
Vulkan Version 1.3

API Interactions

  • Interacts with VK_VERSION_1_2

  • Interacts with VK_VERSION_1_3

  • Interacts with VK_VERSION_1_4

  • Interacts with VK_ARM_pipeline_opacity_micromap

  • Interacts with VK_EXT_attachment_feedback_loop_layout

  • Interacts with VK_EXT_buffer_device_address

  • Interacts with VK_EXT_conditional_rendering

  • Interacts with VK_EXT_descriptor_buffer

  • Interacts with VK_EXT_fragment_density_map

  • Interacts with VK_EXT_graphics_pipeline_library

  • Interacts with VK_EXT_opacity_micromap

  • Interacts with VK_EXT_pipeline_creation_cache_control

  • Interacts with VK_EXT_pipeline_protected_access

  • Interacts with VK_EXT_transform_feedback

  • Interacts with VK_KHR_acceleration_structure

  • Interacts with VK_KHR_buffer_device_address

  • Interacts with VK_KHR_dynamic_rendering

  • Interacts with VK_KHR_fragment_shading_rate

  • Interacts with VK_KHR_pipeline_executable_properties

  • Interacts with VK_KHR_pipeline_library

  • Interacts with VK_KHR_ray_tracing_pipeline

  • Interacts with VK_KHR_video_decode_queue

  • Interacts with VK_KHR_video_encode_queue

  • Interacts with VK_NV_device_generated_commands

  • Interacts with VK_NV_displacement_micromap

  • Interacts with VK_NV_ray_tracing

  • Interacts with VK_NV_ray_tracing_motion_blur

Deprecation State

Contact

Extension Proposal

VK_KHR_maintenance5

Other Extension Metadata

Last Modified Date

2023-05-02

Interactions and External Dependencies
Contributors

  • Stu Smith, AMD

  • Tobias Hector, AMD

  • Shahbaz Youssefi, Google

  • Slawomir Cygan, Intel

  • Lionel Landwerlin, Intel

  • James Fitzpatrick, Imagination Technologies

  • Andrew Garrard, Imagination Technologies

  • Ralph Potter, Samsung

  • Pan Gao, Huawei

  • Jan-Harald Fredriksen, ARM

  • Jon Leech, Khronos

  • Mike Blumenkrantz, Valve

Description

VK_KHR_maintenance5 adds a collection of minor features, none of which would warrant an entire extension of their own.

The new features are as follows:

  • A new VK_FORMAT_A1B5G5R5_UNORM_PACK16_KHR format

  • A new VK_FORMAT_A8_UNORM_KHR format

  • A property to indicate that multisample coverage operations are performed after sample counting in EarlyFragmentTests mode

  • Relax VkBufferView creation requirements by allowing subsets of the associated VkBuffer usage using VkBufferUsageFlags2CreateInfoKHR

  • A new command vkCmdBindIndexBuffer2KHR, allowing a range of memory to be bound as an index buffer

  • vkGetDeviceProcAddr must return NULL for supported core functions beyond the version requested by the application.

  • A property to indicate that the sample mask test is performed after sample counting in EarlyFragmentTests mode

  • vkCmdBindVertexBuffers2 now supports using VK_WHOLE_SIZE in the pSizes parameter.

  • A default size of 1.0 is used if PointSize is not written

  • Shader modules are deprecated - applications can now pass VkShaderModuleCreateInfo as a chained structure to pipeline creation via VkPipelineShaderStageCreateInfo

  • A function vkGetRenderingAreaGranularityKHR to query the optimal render area for a dynamic rendering instance.

  • A property to indicate that depth/stencil texturing operations with VK_COMPONENT_SWIZZLE_ONE have defined behavior

  • Add vkGetImageSubresourceLayout2KHR and a new function vkGetDeviceImageSubresourceLayoutKHR to allow the application to query the image memory layout without having to create an image object and query it.

  • Allow VK_REMAINING_ARRAY_LAYERS as the layerCount member of VkImageSubresourceLayers

  • Adds stronger guarantees for propagation of VK_ERROR_DEVICE_LOST return values

  • A property to indicate whether PointSize controls the final rasterization of polygons if polygon mode is VK_POLYGON_MODE_POINT

  • Two properties to indicate the non-strict line rasterization algorithm used

  • Two new flags words VkPipelineCreateFlagBits2KHR and VkBufferUsageFlagBits2KHR

  • Physical-device-level functions can now be called with any value in the valid range for a type beyond the defined enumerants, such that applications can avoid checking individual features, extensions, or versions before querying supported properties of a particular enumerant.

  • Clarification that copies between images of any type are allowed, treating 1D images as 2D images with a height of 1.

New Commands

New Structures

New Enums

New Bitmasks

New Enum Constants

If VK_KHR_dynamic_rendering or Vulkan Version 1.3 and VK_EXT_fragment_density_map is supported:

If VK_KHR_dynamic_rendering or Vulkan Version 1.3 and VK_KHR_fragment_shading_rate is supported:

If VK_ARM_pipeline_opacity_micromap is supported:

If VK_EXT_attachment_feedback_loop_layout is supported:

If VK_EXT_conditional_rendering is supported:

If VK_EXT_descriptor_buffer is supported:

If VK_EXT_graphics_pipeline_library is supported:

If VK_EXT_opacity_micromap is supported:

If VK_EXT_transform_feedback is supported:

If VK_KHR_acceleration_structure is supported:

If VK_KHR_pipeline_executable_properties is supported:

If VK_KHR_pipeline_library is supported:

If VK_KHR_ray_tracing_pipeline is supported:

If VK_KHR_video_decode_queue is supported:

If VK_KHR_video_encode_queue is supported:

If VK_NV_device_generated_commands is supported:

If VK_NV_displacement_micromap is supported:

If VK_NV_ray_tracing is supported:

If VK_NV_ray_tracing_motion_blur is supported:

If Vulkan Version 1.2 or VK_KHR_buffer_device_address or VK_EXT_buffer_device_address is supported:

If Vulkan Version 1.3 or VK_EXT_pipeline_creation_cache_control is supported:

If Vulkan Version 1.4 or VK_EXT_pipeline_protected_access is supported:

Promotion to Vulkan 1.4

Functionality in this extension is included in core Vulkan 1.4 with the KHR suffix omitted. The original type, enum and command names are still available as aliases of the core functionality.

Version History

  • Revision 1, 2022-12-12 (Stu Smith)

    • 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

Copyright 2014-2026 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0