VK_EXT_queue_family_foreign.adoc

{generated}/meta/{refprefix}VK_EXT_queue_family_foreign.adoc

Other Extension Metadata

Last Modified Date

2017-11-01

IP Status

No known IP claims.

Contributors

• Lina Versace, Google

• James Jones, NVIDIA

• Faith Ekstrand, Intel

• Jesse Hall, Google

• Daniel Rakos, AMD

• Ray Smith, ARM

Description

This extension defines a special queue family, ename:VK_QUEUE_FAMILY_FOREIGN_EXT, which can be used to transfer ownership of resources backed by external memory to foreign, external queues. This is similar to ename:VK_QUEUE_FAMILY_EXTERNAL_KHR, defined in apiext:VK_KHR_external_memory. The key differences between the two are:

• The queues represented by ename:VK_QUEUE_FAMILY_EXTERNAL_KHR must share the same physical device and the same driver version as the current slink:VkInstance. ename:VK_QUEUE_FAMILY_FOREIGN_EXT has no such restrictions. It can represent devices and drivers from other vendors, and can even represent non-Vulkan-capable devices.

• All resources backed by external memory support ename:VK_QUEUE_FAMILY_EXTERNAL_KHR. Support for ename:VK_QUEUE_FAMILY_FOREIGN_EXT is more restrictive.

• Applications should expect transitions to/from ename:VK_QUEUE_FAMILY_FOREIGN_EXT to be more expensive than transitions to/from ename:VK_QUEUE_FAMILY_EXTERNAL_KHR.

{generated}/interfaces/VK_EXT_queue_family_foreign.adoc

Version History

• Revision 1, 2017-11-01 (Lina Versace)

  • Squashed internal revisions