Struct MotionFrameHost 

pub struct MotionFrameHost { /* private fields */ }

Renderer-neutral host state for one adapter-owned motion frame source.

The host does not schedule frames by itself. It records the latest motion demand and returns a small decision object that the owning adapter can translate into its own frame request API.

Implementations

impl MotionFrameHost

pub const fn new() -> Self

Creates an idle frame host.

pub const fn last_elapsed(&self) -> Duration

Returns the last clamped elapsed time observed by this host.

pub const fn last_frame_demand(&self) -> MotionFrameDemand

Returns the latest frame demand observed by this host.

pub const fn requested_frames(&self) -> u64

Returns how many frame requests this host has asked the adapter to issue.

pub const fn reset(&mut self)

Resets elapsed time and demand state.

pub fn observe( &mut self, frame_demand: MotionFrameDemand, ) -> MotionFrameHostUpdate

Observes a frame demand and returns the adapter decision for this render pass.

pub fn observe_all( &mut self, demands: impl IntoIterator<Item = MotionFrameDemand>, ) -> MotionFrameHostUpdate

Combines many frame demands and returns the adapter decision for this render pass.

pub fn sample_elapsed<T>( &mut self, requested_elapsed: Duration, sample: impl FnOnce(MotionClockSample) -> (T, MotionFrameDemand), ) -> MotionFrameHostSample<T>

Samples motion from explicit adapter elapsed time and records the returned frame demand.

pub fn sample_since<T>( &mut self, started_at: Instant, now: Instant, sample: impl FnOnce(MotionClockSample) -> (T, MotionFrameDemand), ) -> MotionFrameHostSample<T>

Samples motion from adapter instants and records the returned frame demand.

If the owner’s run epoch changes, call Self::reset before sampling the new run.

Trait Implementations

impl Clone for MotionFrameHost

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 MotionFrameHost

impl Debug for MotionFrameHost

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

Formats the value using the given formatter.

impl Default for MotionFrameHost

fn default() -> Self

Returns the “default value” for a type.

impl Eq for MotionFrameHost

impl PartialEq for MotionFrameHost

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for MotionFrameHost