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Keep instance segmentation refreshes fast with many annotated components - #168
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WouterJansen merged 1 commit intoOct 5, 2026
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Each refresh hid every annotation component again in every camera's scene and lighting captures and the player's view with AddUnique, which is quadratic, and never dropped destroyed components; UpdateAnnotation- Components also searched its list for every component. With thousands of annotated meshes a refresh took tens of milliseconds to seconds of game thread time. - Hiding uses a set (linear) and drops destroyed components. - The annotator remembers the components added since the previous refresh, and cameras hide only those; refresh serial numbers make a camera that is new, or missed a refresh, hide all of them instead. The player's view is updated once per refresh rather than once per camera. - UpdateAnnotationComponents looks components up in a set. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01JmWqXFCY6vDdpRe4VHoaQX
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Instance segmentation refreshes get slow with many annotated meshes: each refresh re-hid every annotation component in every camera's scene and lighting captures and the player's view with
AddUnique(quadratic), never dropped destroyed components, andUpdateAnnotationComponentssearched its list for every component.Found in HERCULES (a Cosys-AirSim fork, UE 5.8.3) with ~25k annotated streamed map tiles, where a refresh took ~48 ms of game-thread time; afterwards segmentation images were unchanged and the stutter gone. This tree's version also hides the lighting capture; built from it with UE 5.8.3 (Windows), segmentation images in Blocks render as before.
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