Struct FrameMeta 

pub struct FrameMeta {
    pub frame_time: FrameTime,
    pub size: SurfaceSize,
    pub frame_id: u64,
    pub paint_serial: u64,
}

Per-frame metadata riding the scene-handoff channel alongside the scene itself.

Fields

frame_time: FrameTime

The shell’s frame clock for this frame (Choreographer/CADisplayLink/ desktop epoch), threaded through to PaintCtx::frame_time so the render thread advances animations against the same clock the UI thread painted with. Only differences of two FrameTimes carry meaning (see its docs).

size: SurfaceSize

The surface size this scene was laid out for — the render thread checks it against the live swapchain configuration before encoding.

frame_id: u64

Monotonically increasing per-frame id the UI thread stamps, so a dropped (latest-wins-replaced) frame is observable in diagnostics and so a render-side report can be paired back to the frame that produced it.

paint_serial: u64

The paint serial the render root minted for this scene (frust_core::PaintOutcome::paint_serial). The render thread names it to the renderer (SurfaceRenderer::note_scene_serial) before encoding the scene, so the resident-key ledger it publishes once the scene is committed carries it — and a scene this slot drops never does. A separate field from frame_id: that one counts hand-offs, this one counts paints, and only the paint’s own number can be compared against what a widget recorded during it.

Trait Implementations

impl Clone for FrameMeta

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 FrameMeta

impl Debug for FrameMeta

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

Formats the value using the given formatter.

impl PartialEq for FrameMeta

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for FrameMeta