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associated material at the top level, vk.xml and associated material in xml/, and generated include and source files in include/vulkan/ and src/ext_loader/, respectively (public issue 436).
44 lines
1.4 KiB
Plaintext
44 lines
1.4 KiB
Plaintext
include::meta/VK_EXT_queue_family_foreign.txt[]
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*Last Modified Date*::
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2017-11-01
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*IP Status*::
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No known IP claims.
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*Contributors*::
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- Chad Versace, Google
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- James Jones, NVIDIA
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- Jason Ekstrand, Intel
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- Jesse Hall, Google
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- Daniel Rakos, AMD
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- Ray Smith, ARM
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This extension defines a special queue family,
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ename:VK_QUEUE_FAMILY_FOREIGN_EXT, which can be used to transfer ownership
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of resources backed by external memory to foreign, external queues.
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This is similar to ename:VK_QUEUE_FAMILY_EXTERNAL_KHR, defined in
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`<<VK_KHR_external_memory>>`.
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The key differences between the two are:
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* The queues represented by ename:VK_QUEUE_FAMILY_EXTERNAL_KHR must share
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the same physical device and the same driver version as the current
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slink:VkInstance.
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ename:VK_QUEUE_FAMILY_FOREIGN_EXT has no such restrictions.
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It can represent devices and drivers from other vendors, and can even
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represent non-Vulkan-capable devices.
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* All resources backed by external memory support
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ename:VK_QUEUE_FAMILY_EXTERNAL_KHR.
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Support for ename:VK_QUEUE_FAMILY_FOREIGN_EXT is more restrictive.
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* Applications should expect transitions to/from
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ename:VK_QUEUE_FAMILY_FOREIGN_EXT to be more expensive than transitions
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to/from ename:VK_QUEUE_FAMILY_EXTERNAL_KHR.
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=== New Enum Constants
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* Special constants:
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** ename:VK_QUEUE_FAMILY_FOREIGN_EXT
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=== Version History
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* Revision 1, 2017-11-01 (Chad Versace)
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- Squashed internal revisions
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