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Registered Extension Number




Extension and Version Dependencies

Other Extension Metadata

Last Modified Date


  • Jeff Bolz, NVIDIA

  • Jeff Juliano, NVIDIA


This extension adds support for querying the amount of memory used and the total memory budget for a memory heap. The values returned by this query are implementation-dependent and can depend on a variety of factors including operating system and system load.

The heapBudget values can be used as a guideline for how much total memory from each heap the process can use at any given time, before allocations may start failing or causing performance degradation. The values may change based on other activity in the system that is outside the scope and control of the Vulkan implementation.

New Enum Constants



  • Extending VkStructureType:


Version History

  • Revision 1, 2018-10-08 (Jeff Bolz)

    • Initial revision

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.

Copyright (c) 2014-2020 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.