Enum BackendKind 

#[non_exhaustive]
pub enum BackendKind {
    Cpu,
    Wgpu,
    Vulkan,
    D3D12,
    D3D11,
    Metal,
    OpenGL,
    OpenCl,
    Cuda,
    WebCodecs,
}

Identity of a compute backend. Used as a discriminant on error variants, budget accounting, GpuContext, SyncPoint, etc.

#[non_exhaustive], so adding a backend is not a breaking change.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Cpu

Wgpu

Available on crate feature wgpu only.

wgpu::Device-backed work submitted via wgpu::Queue::submit. Emitted when the sync primitive is a wgpu::SubmissionIndex and the producer does not expose a lower-level (Vulkan / D3D12 / Metal) handle.

Vulkan

Native Vulkan submit — the producer holds a VkDevice and minted a VkSemaphore directly (typically a timeline semaphore).

D3D12

Native D3D12 submit — ID3D12CommandQueue::Signal on an ID3D12Fence.

D3D11

Native D3D11 submit — IDXGIKeyedMutex::AcquireSync / ReleaseSync on a shared texture.

Metal

Native Metal submit — MTLCommandQueue::commandBuffer followed by encodeSignalEvent on an MTLSharedEvent.

OpenGL

Native OpenGL — glFenceSync for a GL-only fence, or a GL semaphore (glGenSemaphoresEXT) imported from a cross-API handle.

OpenCl

Available on crate feature opencl only.

Cuda

Available on crate feature cuda only.

WebCodecs

Available on crate feature web-codecs only.

WebCodecs encode/decode target (browser). The caller consumes / produces a web_sys::VideoFrame through a VideoEncoder / VideoDecoder; as a shared-allocation target it selects the OffscreenCanvas swapchain path. Gated on the web-codecs feature.

Trait Implementations

impl Clone for BackendKind

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BackendKind

impl Debug for BackendKind

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

Formats the value using the given formatter.

impl Eq for BackendKind

impl Hash for BackendKind

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for BackendKind

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for BackendKind