Struct PerfReportPlugin 

pub struct PerfReportPlugin { /* private fields */ }

Per-frame perf reporter: accumulates span and per-system timings, emits a PerfReport callback every frames_per_report frames, optionally writes Chrome-trace JSON to a file.

Inserts

• resource: PerfAccum (private)
• system: none
• view: none
• entity: none
• hooks: post_render (drains crate::perf events; emits report at window boundary)

Implementations

impl PerfReportPlugin

pub fn new(frames_per_report: u32) -> Self

pub fn with_sink(self, sink: fn(&PerfReport)) -> Self

pub fn with_perfetto_line_sink(self, sink: PerfettoLineSink) -> Self

Write each drained event as one chrome-JSON line through sink. Open the resulting NDJSON in https://ui.perfetto.dev. Works on no_std; ESP backends pass an esp_println shim.

Trait Implementations

impl Default for PerfReportPlugin

fn default() -> Self

Returns the “default value” for a type.

impl<B, F> Plugin<B, F> for PerfReportPlugin

where B: Surface, F: RendererFactory<B>,

fn build(&mut self, app: &mut App<B, F>)

fn post_render(&mut self, world: &mut World, _render_nanos: u64)

render_nanos covers layout + render walker only; flush and prev-rect seeding are excluded. Zero when no clock plugin is installed.

fn pre_render(&mut self, _world: &mut World)

fn on_event(&mut self, _world: &mut World, _event: &InputEvent) -> bool

Inspect each input event before it reaches widgets. Return true to mark the event consumed; App will skip widget-level dispatch for that event.

fn on_quit(&mut self, _world: &mut World)

fn name(&self) -> &'static str