Contact
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James Jones [GitHub]cubanismo
Other Extension Metadata
- Last Modified Date
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2017-11-01
- IP Status
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No known IP claims.
- Contributors
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Lina Versace, Google
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James Jones, NVIDIA
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Faith 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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Description
This extension defines a special queue family,
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 VK_QUEUE_FAMILY_EXTERNAL_KHR, defined in
VK_KHR_external_memory.
The key differences between the two are:
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The queues represented by VK_QUEUE_FAMILY_EXTERNAL_KHR must share the same physical device and the same driver version as the current VkInstance. 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.
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All resources backed by external memory support VK_QUEUE_FAMILY_EXTERNAL_KHR. Support for VK_QUEUE_FAMILY_FOREIGN_EXT is more restrictive.
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Applications should expect transitions to/from VK_QUEUE_FAMILY_FOREIGN_EXT to be more expensive than transitions to/from VK_QUEUE_FAMILY_EXTERNAL_KHR.
New Enum Constants
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VK_EXT_QUEUE_FAMILY_FOREIGN_EXTENSION_NAME -
VK_EXT_QUEUE_FAMILY_FOREIGN_SPEC_VERSION
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.