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This library provides ImGui controls for displaying performance metrics such as the following:
Copyright 2017 Intel Corporation
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A simple example of MetricsGui usage can be found in the sample app in the 'sample/' directory.
Essential steps include:
- Allocate and initialize
MetricsGuiMetricinstances.
// Note: MetricsGuiPlot does not assume ownership over added metrics, so it
// is the users responsibility to manage the lifetime of MetricsGuiMetric
// instances.
MetricsGuiMetric frameTimeMetric("Frame time", "s", MetricsGuiMetric::USE_SI_UNIT_PREFIX);
frameTimeMetric.mSelected = true;- Allocate and initialize
MetricsGuiPlotinstances. The below shows all of theMetricsGuiPlotoptions with their default values (i.e., the same values set by theMetricsGuiPlotconstructor) so you only need to set ones you want changed.
MetricsGuiPlot frameTimePlot;
frameTimePlot.mBarRounding = 0.f; // amount of rounding on bars
frameTimePlot.mRangeDampening = 0.95f; // weight of historic range on axis range [0,1]
frameTimePlot.mInlinePlotRowCount = 2; // height of DrawList() inline plots, in text rows
frameTimePlot.mPlotRowCount = 5; // height of DrawHistory() plots, in text rows
frameTimePlot.mVBarMinWidth = 6; // min width of bar graph bar in pixels
frameTimePlot.mVBarGapWidth = 1; // width of bar graph inter-bar gap in pixels
frameTimePlot.mShowAverage = false; // draw horizontal line at series average
frameTimePlot.mShowInlineGraphs = false; // show history plot in DrawList()
frameTimePlot.mShowOnlyIfSelected = false; // draw show selected metrics
frameTimePlot.mShowLegendDesc = true; // show series description in legend
frameTimePlot.mShowLegendColor = true; // use series color in legend
frameTimePlot.mShowLegendUnits = true; // show units in legend values
frameTimePlot.mShowLegendAverage = false; // show series average in legend
frameTimePlot.mShowLegendMin = true; // show plot y-axis minimum in legend
frameTimePlot.mShowLegendMax = true; // show plot y-axis maximum in legend
frameTimePlot.mBarGraph = false; // use bars to draw history
frameTimePlot.mStacked = false; // stack series when drawing history
frameTimePlot.mSharedAxis = false; // use first series' axis range
frameTimePlot.mFilterHistory = true; // allow single plot point to represent more than on history value- Add metrics to the plot.
frameTimePlot.AddMetric(&frameTimeMetric);- Then, within your render loop you can add values to the metric history and update the plot axes.
frameTimeMetric.AddNewValue(1.f / ImGui::GetIO().Framerate);
frameTimePlot.UpdateAxes();- Render the GUI from within an ImGui window using either
MetricsGuiPlot::DrawList()orMetricsGuiPlot::DrawHistory().
frameTimePlot.DrawList();
frameTimePlot.DrawHistory();