org.lwjgl.vulkan

Class EXTQueueFamilyForeign

java.lang.Object

org.lwjgl.vulkan.EXTQueueFamilyForeign

public final class EXTQueueFamilyForeign
extends java.lang.Object

This extension defines a special queue family, 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 QUEUE_FAMILY_EXTERNAL_KHR, defined in VK_KHR_external_memory. The key differences between the two are:

• The queues represented by QUEUE_FAMILY_EXTERNAL_KHR must share the same physical device and the same driver version as the current VkInstance. 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 QUEUE_FAMILY_EXTERNAL_KHR. Support for QUEUE_FAMILY_FOREIGN_EXT is more restrictive.
• Applications should expect transitions to/from QUEUE_FAMILY_FOREIGN_EXT to be more expensive than transitions to/from QUEUE_FAMILY_EXTERNAL_KHR.

Name String

VK_EXT_queue_family_foreign

Extension Type

Device extension

Registered Extension Number

127

Revision

1

Extension and Version Dependencies

• Requires Vulkan 1.0
• Requires VK_KHR_external_memory

Contact

• Chad Versace chadversary

Last Modified Date

2017-11-01

IP Status

No known IP claims.

Contributors

• Chad Versace, Google
• James Jones, NVIDIA
• Jason Ekstrand, Intel
• Jesse Hall, Google
• Daniel Rakos, AMD
• Ray Smith, ARM

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	VK_EXT_QUEUE_FAMILY_FOREIGN_EXTENSION_NAME The extension name.
static int	VK_EXT_QUEUE_FAMILY_FOREIGN_SPEC_VERSION The extension specification version.
static int	VK_QUEUE_FAMILY_FOREIGN_EXT VK_QUEUE_FAMILY_FOREIGN_EXT

Method Summary

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

VK_EXT_QUEUE_FAMILY_FOREIGN_SPEC_VERSION

public static final int VK_EXT_QUEUE_FAMILY_FOREIGN_SPEC_VERSION

The extension specification version.

See Also:

Constant Field Values

VK_EXT_QUEUE_FAMILY_FOREIGN_EXTENSION_NAME

public static final java.lang.String VK_EXT_QUEUE_FAMILY_FOREIGN_EXTENSION_NAME

The extension name.

See Also:

Constant Field Values

VK_QUEUE_FAMILY_FOREIGN_EXT

public static final int VK_QUEUE_FAMILY_FOREIGN_EXT

VK_QUEUE_FAMILY_FOREIGN_EXT

See Also:

Constant Field Values