Minimizing Occasional Show/Hide (Popping) with Fragments Culling on Small Models

[alvi12-code]

Describe the bug 📝

On small models, I still see elements occasionally pop in/out due to culling like windows, doors and furniture

Is there a supported way to disable or relax culling for small scenes (or increase on-screen budget/thresholds) to eliminate this effect

Reproduction ▶️

No response

Steps to reproduce 🔢

No response

System Info 💻

System:
    OS: Windows 10 10.0.19045
    CPU: (20) x64 12th Gen Intel(R) Core(TM) i7-12700H
    Memory: 7.89 GB / 31.65 GB
  Binaries:
    Node: 22.19.0 - C:\Program Files\nodejs\node.EXE
    npm: 10.9.0 - C:\Program Files\nodejs\npm.CMD
  Browsers:
    Edge: Chromium (140.0.3485.54)
    Firefox: 143.0.1 - C:\Program Files\Mozilla Firefox\firefox.exe
    Internet Explorer: 11.0.19041.5794

Used Package Manager 📦

npm

Error Trace/Logs 📃

No response

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• The provided reproduction is a minimal reproducible example of the bug.

[agviegas]

Hey @alvi12-code you can use the graphics quality to control the LOD / culling intensity, but other users working with smaller models have asked for a way to disable LOD completely, so I've implemented that. From @thatopen/fragments@3.2.7 you can do this:

  model.setLodMode(LodMode.ALL_GEOMETRY);

These are the LOD modes available:

/**
 * Enum representing the mode of the LOD / culling system.
 */
export enum LodMode {
  /** Hides invisible items, displays far away items as LOD geometry, displays close items as full geometry */
  DEFAULT = 0,
  /** Displays all items as full geometry */
  ALL_VISIBLE = 1,
  /** Hides invisible items, displays the rest as full geometry */
  ALL_GEOMETRY = 2,
}

Keep in mind that non-default settings will stumble upon performance issues in bigger models. Hope this helps. Let us know if you find any issues using this!