RuntimeTelemetryExample.cs

using System.Drawing;
using Gondwana.Diagnostics;
using Gondwana.Rendering;
using Gondwana.Rendering.Views;
using Gondwana.Widgets.Hud;
 
namespace Gondwana.Examples;

public static class RuntimeTelemetryExample
{
    public static IDisposable StartCollection() => Engine.Instance.Profiler.Start();

    public static ProfilerWidget CreateWidget(RenderSurfaceHostBase host, View view)
    {
        var widget = new ProfilerWidget(
            host,
            view,
            new Rectangle(12, 12, 700, 520));
 
        // Hide any metric globally, or target a single named source.
        widget.SetMeasurementVisible("layers.omitted", false);
        widget.SetMeasurementVisible("Render surface", "snapshot.commands.approximate", false);
        widget.ContextInfo = ProfilerContextInfo.View | ProfilerContextInfo.Backbuffer;
        widget.AdditionalLinesProvider = _ => ["Diagnostics: application-defined line"];
        return widget;
    }

    public static void PrintLatest(RuntimeProfiler profiler, TextWriter output)
    {
        var snapshot = profiler.GetLatestSnapshot();
        if (snapshot is null) return;
        foreach (var source in snapshot.Sources)
        {
            if (source.Metrics.TryGetValue("cycle.cpu.ms", out var cycle) &&
                cycle.Availability == TelemetryAvailability.Available)
                output.WriteLine($"CPS={cycle.Count / snapshot.ElapsedSeconds:F1}; CPU mean={cycle.Mean:F3} ms");
        }
    }
}