A real-time performance heatmap tool that helps you visualize and optimize rendering costs in scenes. Perfect for targeting high-performance environments, large open worlds, or VR projects.HDRP known issue (Editor-only): When the heatmap overlay is enabled, part of the Scene View toolbar/overlay may appear tinted by the heatmap color. This is visual-only; analyzer features and runtime builds are unaffected. Scope: HDRP Scene View (not URP/Built-in). Workaround: disable “Show Heatmap in Edit Mode”. Fix in progress.The Scene Performance Analyzer is an editor-only tool that visualizes the performance impact of every renderer in your scene. It estimates the GPU and CPU cost of objects using metrics such as triangle count, material complexity, and renderer state. This information is displayed in the form of a heatmap, helping you identify performance hotspots.Key Features:Instantly see which GameObjects are expensive to render using an in-editor color gradient overlay - Live Heatmap VisualizationAttributes real per-frame CPU/GPU time across renderers by measured complexity (triangles, submeshes, transparency, shadows, skinning) for a heatmap, with a per-object Measure button for verified ground-truth cost - Accurate Cost EstimationAdjust thresholds, colors, update frequency, and visibility settings through a dedicated window - Customizable SettingsEditor-only script that does not affect runtime builds or gameplay logic - Lightweight and SafeGround-truth Isolation Measurement - one-click "Measure" per object: samples real frame time with and without the renderer, reporting its actual cost, not a heuristicReal Frame Timing - CPU and GPU frame time pulled directly from Unity's ProfilerRecorder and FrameTimingManager, with a "GPU: n/a" fallback on platforms that don't expose GPU timingIdeal For:Developers working with large, open-world scenesArtists optimizing static or baked environmentsVR and mobile game developers with strict performance budgetsTeams aiming to catch render bottlenecks before profilingVery Easy SetupSimply install the package, add the ScenePerformanceAnalyzer script, and open the Scene Performance Analyzer window. The system starts tracking renderers and generating the heatmap on start.Supported Render PipelinesBuilt-in Render Pipeline (BRP)Universal Render Pipeline (URP)(Tested in 2021 LTS and newer. Heatmap appearance may vary slightly depending on RP shader support.) High Definition Render Pipeline (HDRP)System Requirements2021.3 LTS or newer recommendedEditor-only: does not affect buildsCompatible with Windows, macOS, and Linux editorsHow It WorksSamples real per-frame CPU/GPU timing via Unity's Profiler and FrameTimingManager APIsDistributes that measured frame time across visible renderers, weighted by triangle count, submesh/material count, transparency (render queue), shadows, and skinningOptional per-object "Measure" isolates a renderer (disable -> re-sample -> restore) for an accurate cost reading, independent of the heatmap's attributed estimateHeatmap color is calculated per object using weighted scoringCustomization OptionsToggle heatmap visibility in Edit and Play modeAdjustable thresholds for low/medium/high impactColor settings for each heat levelUpdate rate control (live updates or on-demand)Object filters (e.g. hide low-impact objects)In-scene ms labels above objects, with a red wire outline on the current worst offenderCSV export includes triangles, vertices, materials, transparency, skinned state, and measured costEditor IntegrationWindow > Tools > Performance AnalyzerPreferences integrated for toggling Edit Mode visibilityPerformance ImpactVery low editor overhead, updates in the background at controlled intervalsDesigned to scale with large scenesLimitationsThe live heatmap's GPU/CPU columns are still attributed estimates, distributed across renderers by measured complexity; they won't perfectly match Unity's Profiler or Frame Debugger.For ground-truth per-object cost, use the Measure button: it isolates the renderer and reports its real measured frame-time impact, independent of the heatmap estimate.AI tools were used for assistance with debugging, shader development in HDRP, and creation of the documentation.
