Bounded ring of aligned UI, worker, profiler, and presentation-memory samples. More...

#include "donner/editor/ViewportInteractionController.h"

Public Member Functions
void	push (float ms)
	Append a new frame sample. The matching backendMs[] slot is reset to 0 ("no worker result this frame"); setLatestBackendMs fills it in if a render result lands during the same UI frame.
void	setLatestBackendMs (float ms)
	Record an async-renderer worker timing for the most recently pushed frame. Called by RenderCoordinator::pollRenderResult when a new RenderResult arrives. No-op if no frame has been pushed yet. Also updates lastBackendMs so UI elements that want to show the latest measured worker latency have a persistent value.
void	setLatestFrameCost (const FrameCostBreakdown &cost)
	Record the editor render-cost breakdown for the most recently pushed frame. No-op if no frame has been pushed yet.
void	setLatestMemorySample (const FrameMemorySample &sample)
	Record presentation-memory counters for the most recently pushed frame. No-op if no frame has been pushed yet.
FrameMemorySample	latestNonZeroMemorySample () const
	Return the newest non-zero presentation-memory sample, or zeroes if none exist.
float	latest () const
	Return the latest UI-frame duration in milliseconds, or zero when empty.
float	latestBackend () const
	Return the async worker timing that landed on the newest frame, or zero.
float	max () const
	Return the largest retained UI-frame duration in milliseconds, or zero when empty.

Public Attributes
std::array< float, kFrameHistoryCapacity >	deltaMs {}
	ImGui frame delta per UI-thread frame - populated from ImGui::GetIO().DeltaTime by noteFrameDelta.
std::array< float, kFrameHistoryCapacity >	backendMs {}
	Async-renderer worker/presentation latency (ms) per UI frame, aligned 1:1 with the matching deltaMs[] slot. Holds 0.0f for frames where no render result landed (the worker was still busy or nothing was requested); consumers skip zero entries so the graph doesn't drop to zero between drags.
std::array< FrameProfilerSample, kFrameHistoryCapacity >	profiler {}
	Known frame-cost divisions drawn as the color-bar profiler.
std::array< FrameMemorySample, kFrameHistoryCapacity >	memory {}
	Presentation memory retained by the editor texture cache.
std::size_t	writeIndex = 0
	Ring slot that receives the next frame sample.
std::size_t	samples = 0
	Number of valid samples currently retained, bounded by capacity.
float	lastBackendMs = 0.0f
	Most recent non-zero worker sample, so latched-worker-latency readers (the numeric readout, sticky-line rendering) have something to show between render-result landings.

Detailed Description

Bounded ring of aligned UI, worker, profiler, and presentation-memory samples.

The documentation for this struct was generated from the following file:

Public Member Functions