Registered Extension Number




Ratification Status


Extension and Version Dependencies

SPIR-V Dependencies

Deprecation State


Other Extension Metadata

Last Modified Date


Interactions and External Dependencies
IP Status

No known IP claims.

  • Alexander Galazin, Arm


The VK_KHR_8bit_storage extension allows use of 8-bit types in uniform and storage buffers, and push constant blocks. This extension introduces several new optional features which map to SPIR-V capabilities and allow access to 8-bit data in Block-decorated objects in the Uniform and the StorageBuffer storage classes, and objects in the PushConstant storage class.

The StorageBuffer8BitAccess capability must be supported by all implementations of this extension. The other capabilities are optional.

Promotion to Vulkan 1.2

Functionality in this extension is included in core Vulkan 1.2, with the KHR suffix omitted. However, if Vulkan 1.2 is supported and this extension is not, the StorageBuffer8BitAccess capability is optional. The original type, enum and command names are still available as aliases of the core functionality.

New Structures

New Enum Constants



  • Extending VkStructureType:


New SPIR-V Capabilities

Version History

  • Revision 1, 2018-02-05 (Alexander Galazin)

    • Initial draft

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.

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