Registered Extension Number




Ratification Status


Extension and Version Dependencies

SPIR-V Dependencies


  • Caio Marcelo de Oliveira Filho cmarcelo

Other Extension Metadata

Last Modified Date


IP Status

No known IP claims.

Interactions and External Dependencies
  • Caio Marcelo de Oliveira Filho, Intel

  • Jeff Bolz, NVIDIA

  • Graeme Leese, Broadcom

  • Faith Ekstrand, Intel

  • Daniel Koch, NVIDIA


This extension adds Vulkan support for the SPV_KHR_workgroup_memory_explicit_layout SPIR-V extension, which allows shaders to explicitly define the layout of Workgroup storage class memory and create aliases between variables from that storage class in a compute shader.

The aliasing feature allows different “views” on the same data, so the shader can bulk copy data from another storage class using one type (e.g. an array of large vectors), and then use the data with a more specific type. It also enables reducing the amount of workgroup memory consumed by allowing the shader to alias data whose lifetimes do not overlap.

The explicit layout support and some form of aliasing is also required for layering OpenCL on top of Vulkan.

New Structures

New Enum Constants



  • Extending VkStructureType:


New SPIR-V Capabilities

Version History

  • Revision 1, 2020-06-01 (Caio Marcelo de Oliveira Filho)

    • Initial version

See Also

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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SPDX-License-Identifier: CC-BY-4.0