stride3d / stride3d/stride

FBX Hang Freeze

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bug
Dominant language
C#
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Forks
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Avg merge
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Merged PRs (30d)
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Description

Release Type: Official Release

Version: 4.2.0.2381
Platform(s): Windows
Describe the bug
FBX Loading freezes entire editor, takes ~20 minutes for it to unfreeze

To Reproduce
Steps to reproduce the behavior:

  1. Import a model with many blendshapes
  2. Drag into scene
  3. Watch it freeze

Expected behavior
Generates model preview, and loads within the editor scene

Screenshots
Video is provided
https://chaoscanine.com/Raccoon/fbx.mp4

Log and callstacks
N/A

Additional context
N/A

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the freeze in Stride 4.2.0.2381 on Windows with an FBX model containing many blendshapes, following the three reported steps and the linked video. Done means the model preview is generated and the model loads in the editor scene without the roughly 20-minute freeze.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
game-dev, performance
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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