Unity Tricks They Don’t Tell You: CullingGroup API for Smarter Objects
git-amend
Sep 7, 2025 13:01
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Culling Groups in Unity is a powerful but often overlooked API that lets us tap directly into the engine’s visibility checks and distance bands. In this video we build a custom system that goes beyond Unity’s default frustum culling, with simple on/off toggling, then adding smooth fade in/out effects. Along the way we break down how bounding spheres work, how to register and deregister objects safely, and how to keep everything in sync between Unity’s native system and our managed code. By the end, you’ll see how Culling Group can be used not just for performance, but also for polished gameplay effects.
Unity 6 Culling Group Docs: https://docs.unity3d.com/ScriptReference/CullingGroup.html
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▬ Contents of this video ▬▬▬▬▬▬▬▬▬▬
*Source code:* https://gist.github.com/adammyhre/ff8253ea87d06c08d5ddfed337ba76dd
More Useful Code:
https://github.com/adammyhre?tab=repositories
Unity Utility Library: https://github.com/adammyhre/Unity-Utils
Improved Timers: https://github.com/adammyhre/Unity-Improved-Timers
Lock Inspector Hotkey: https://gist.github.com/adammyhre/4754f731a93bf1cab0d1385ccfa23642
*Other Recommended Tools* _(Affiliate Links)_
Scene Notes - https://assetstore.unity.com/publishers/87819?aid=1101lw3sv
Beautify - https://assetstore.unity.com/packages/vfx/shaders/fullscreen-camera-effects/beautify-3-advanced-post-processing-233073?aid=1101lw3sv
Wingman - https://assetstore.unity.com/packages/tools/utilities/wingman-your-inspector-s-best-friend-303181?aid=1101lw3sv
Favorites Window - https://assetstore.unity.com/packages/tools/utilities/favorites-window-123487?aid=1101lw3sv
Logwin - https://assetstore.unity.com/packages/tools/utilities/logwin-log-debug-values-tracker-149558?aid=1101lw3sv
TimeScale Toolbar - https://assetstore.unity.com/packages/tools/utilities/timescale-toolbar-291564?aid=1101lw3sv
Odin - https://assetstore.unity.com/packages/tools/utilities/odin-inspector-and-serializer-89041?aid=1101lw3sv?aid=1101lw3sv
Odin Validator - https://assetstore.unity.com/packages/tools/utilities/odin-validator-227861?aid=1101lw3sv
Hot Reload: https://assetstore.unity.com/packages/tools/utilities/hot-reload-edit-code-without-compiling-254358?aid=1101lw3sv
Better Hierarchy: https://assetstore.unity.com/packages/tools/utilities/better-hierarchy-272963?aid=1101lw3sv
Better Transform: https://assetstore.unity.com/packages/tools/utilities/better-transform-size-notes-global-local-workspace-child-parent--276554?aid=1101lw3sv
Better Mesh Filter: https://assetstore.unity.com/packages/tools/utilities/better-mesh-filter-266489?aid=1101lw3sv
Editor Console Pro: https://assetstore.unity.com/packages/tools/utilities/editor-console-pro-11889?aid=1101lw3sv
Any Object Finder: https://assetstore.unity.com/packages/tools/utilities/any-object-finder-286455?aid=1101lw3sv
Kybernetic Tools: https://assetstore.unity.com/publishers/16747?aid=1101lw3sv
Sisus Tools: https://assetstore.unity.com/publishers/41398?aid=1101lw3sv
Prime Tween - https://assetstore.unity.com/packages/tools/animation/primetween-high-performance-animations-and-sequences-2529607?aid=1101lw3s
Rabbit Logger - https://assetstore.unity.com/packages/tools/utilities/rabbit-logger-305396?aid=1101lw3s
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