Name

VK_KHR_external_fence - device extension

VK_KHR_external_fence

Name String

VK_KHR_external_fence

Extension Type

Device extension

Registered Extension Number

114

Revision

1

Extension and Version Dependencies

• Requires Vulkan 1.0
• Requires VK_KHR_external_fence_capabilities

Deprecation state

• Promoted to Vulkan 1.1

Contact

• Jesse Hall https://github.com/KhronosGroup/Vulkan-Docs/issues/new?title=VK_KHR_external_fence:%20&body=@critsec%20

Other Extension Metadata

Last Modified Date

2017-05-08

IP Status

No known IP claims.

Interactions and External Dependencies

• Promoted to Vulkan 1.1 Core

Contributors

• Jesse Hall, Google
• James Jones, NVIDIA
• Jeff Juliano, NVIDIA
• Cass Everitt, Oculus
• Contributors to VK_KHR_external_semaphore

Description

An application using external memory may wish to synchronize access to that memory using fences. This extension enables an application to create fences from which non-Vulkan handles that reference the underlying synchronization primitive can be exported.

Promotion to Vulkan 1.1

All functionality in this extension is included in core Vulkan 1.1, with the KHR suffix omitted. The original type, enum and command names are still available as aliases of the core functionality.

New Structures

• Extending FenceCreateInfo:

  • ExportFenceCreateInfoKHR

New Enums

• FenceImportFlagBitsKHR

New Bitmasks

• FenceImportFlagsKHR

New Enum Constants

• KHR_EXTERNAL_FENCE_EXTENSION_NAME

• KHR_EXTERNAL_FENCE_SPEC_VERSION

• Extending FenceImportFlagBits:

  • FENCE_IMPORT_TEMPORARY_BIT_KHR

• Extending StructureType:

  • STRUCTURE_TYPE_EXPORT_FENCE_CREATE_INFO_KHR

Issues

This extension borrows concepts, semantics, and language from VK_KHR_external_semaphore. That extension’s issues apply equally to this extension.

Version History

• Revision 1, 2017-05-08 (Jesse Hall)

  • Initial revision

See Also

ExportFenceCreateInfoKHR, FenceImportFlagBitsKHR, FenceImportFlagsKHR

Document Notes

For more information, see the Vulkan Specification

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