Struct Diag 

pub struct Diag { /* private fields */ }

The render-side diagnostics state: the pure FrameStats, the gated clock, the GPU-byte / draw-call figures, and the two flags that control collection and the on-screen overlay.

Implementations

impl Diag

pub fn new() -> Self

A fresh diagnostics state: not collecting, overlay off.

pub fn set_collecting(&mut self, on: bool)

Enable or disable rolling frame-time collection (the gated clock read). Toggling resets the delta chain so a re-enable does not record a spurious long frame across the disabled gap.

pub fn collecting(&self) -> bool

Whether frame-time collection is currently enabled.

pub fn set_overlay(&mut self, on: bool)

Enable or disable painting the on-screen overlay.

pub fn overlay_enabled(&self) -> bool

Whether the overlay should be painted this frame.

pub fn record_frame(&mut self)

Record a presented frame. Reads the monotonic clock (only while collecting) and feeds the delta since the previous present to the stats.

pub fn record_dropped(&mut self)

Count a frame the renderer could not present. Breaks the delta chain so the next present’s delta excludes the skipped interval.

pub fn set_gpu_bytes(&mut self, bytes: u64)

Set the core-tracked GPU resource byte estimate (fed from the render context each frame — dominated by the swapchain).

pub fn set_draw_calls(&mut self, n: u32)

Set the draw/render-pass count issued on the last frame.

pub fn frame_ms_p50(&self) -> f32

The current rolling snapshot. Median frame time over the window, in milliseconds — the native-only half of the frame-time pair (see FrameStats::frame_ms_p50).

pub fn metrics(&self) -> Metrics

The current rolling snapshot.

pub fn set_analysis(&mut self, frame: &AnalysisFrame)

Take this frame’s analysis snapshot. Called once per drawn frame from the render seam, which is the one place that holds the AnalysisFrame.

pub fn analysis(&self) -> AnalysisMetrics

The latest analysis snapshot — the native-only companion to metrics. See AnalysisMetrics for why it is separate.

pub fn stats(&self) -> &FrameStats

Read-only view of the rolling stats (the overlay reads this to draw the frame-time sparkline).

Trait Implementations

impl Default for Diag

fn default() -> Self

Returns the “default value” for a type.