Enum QueueFamilyOwnershipTransfer 

pub enum QueueFamilyOwnershipTransfer {
    ExclusiveBetweenLocal {
        src_index: u32,
        dst_index: u32,
    },
    ExclusiveToExternal {
        src_index: u32,
    },
    ExclusiveFromExternal {
        dst_index: u32,
    },
    ExclusiveToForeign {
        src_index: u32,
    },
    ExclusiveFromForeign {
        dst_index: u32,
    },
    ConcurrentToExternal,
    ConcurrentFromExternal,
    ConcurrentToForeign,
    ConcurrentFromForeign,
}

Specifies a queue family ownership transfer for a resource.

There are three classes of queues that can be used in an ownership transfer:

• A local queue exists on the current Instance and Device.
• An external queue does not exist on the current Instance, but has the same device_uuid and driver_uuid as the current Device.
• A foreign queue can be an external queue, or any queue on another device for which the mentioned parameters do not match.

Variants

ExclusiveBetweenLocal

For a resource with Sharing::Exclusive, transfers ownership between two local queues.

Fields

src_index: u32

The queue family that currently owns the resource.

dst_index: u32

The queue family to transfer ownership to.

ExclusiveToExternal

For a resource with Sharing::Exclusive, transfers ownership from a local queue to an external queue.

The device API version must be at least 1.1, or the khr_external_memory extension must be enabled on the device.

Fields

src_index: u32

The queue family that currently owns the resource.

ExclusiveFromExternal

For a resource with Sharing::Exclusive, transfers ownership from an external queue to a local queue.

The device API version must be at least 1.1, or the khr_external_memory extension must be enabled on the device.

Fields

dst_index: u32

The queue family to transfer ownership to.

ExclusiveToForeign

For a resource with Sharing::Exclusive, transfers ownership from a local queue to a foreign queue.

The ext_queue_family_foreign extension must be enabled on the device.

Fields

src_index: u32

The queue family that currently owns the resource.

ExclusiveFromForeign

For a resource with Sharing::Exclusive, transfers ownership from a foreign queue to a local queue.

The ext_queue_family_foreign extension must be enabled on the device.

Fields

dst_index: u32

The queue family to transfer ownership to.

ConcurrentToExternal

For a resource with Sharing::Concurrent, transfers ownership from its local queues to an external queue.

The device API version must be at least 1.1, or the khr_external_memory extension must be enabled on the device.

ConcurrentFromExternal

For a resource with Sharing::Concurrent, transfers ownership from an external queue to its local queues.

The device API version must be at least 1.1, or the khr_external_memory extension must be enabled on the device.

ConcurrentToForeign

For a resource with Sharing::Concurrent, transfers ownership from its local queues to a foreign queue.

The ext_queue_family_foreign extension must be enabled on the device.

ConcurrentFromForeign

For a resource with Sharing::Concurrent, transfers ownership from a foreign queue to its local queues.

The ext_queue_family_foreign extension must be enabled on the device.

Trait Implementations

impl Clone for QueueFamilyOwnershipTransfer

fn clone(&self) -> QueueFamilyOwnershipTransfer

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for QueueFamilyOwnershipTransfer

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Copy for QueueFamilyOwnershipTransfer