Add MeshLabArtifactValidator to detect bad external MeshLab settings - #109
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SashaRX merged 2 commits intoMay 2, 2026
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Detects three classes of artifacts left by the desktop MeshLab tool when processing FBX before Unity import: - Collapsed UV seams (Merge Close / Remove Duplicate Vertices) - Recalculated normals (UseExistingNormals OFF on FBX export) - Broken or wiped UV1 parameterization (Flat Plane filter) Exposed via Tools/Mesh Lab/Validators/Check Imported MeshLab Artifacts. Operates on selected GameObject, Mesh asset, or imported FBX. Read-only; logs through UvtLog. EXPERIMENTS.md gets a new section listing the safe MeshLab filter and export settings, mapped to the symptoms the validator emits.
Object.Instantiate(resultMesh) produced clones named "Original(Clone)" which Unity FBX Exporter writes with empty/auto-generated mesh node names; the FBX SDK then defaults the FbxMesh node to the scene name. On reimport every mesh asset shows up as "Scene", erasing per-LOD and per-renderer identifiers needed by sidecar lookup, scene relinking and the new MeshLabArtifactValidator report. Mirrors the existing fix at CopyVertexDataToClone (in-place overwrite path): assign mesh.name = ResolveExportMeshName(...) before handing the mesh to ExportObjects.
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Codex Review: Didn't find any major issues. Already looking forward to the next diff. ℹ️ About Codex in GitHubYour team has set up Codex to review pull requests in this repo. Reviews are triggered when you
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SashaRX
merged commit May 2, 2026
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claude/bake-ao-single-hierarchy-27AwS
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Summary
MeshLabArtifactValidator— a read-only mesh inspection tool that detects three common symptoms of bad external MeshLab export settings: collapsed UV seams (from Merge Close Vertices), recalculated normals (UseExistingNormals OFF), and broken UV1 parameterization (Flat Plane / wiped channels).Tools → Mesh Lab → Validators → Check Imported MeshLab Artifacts) with support for selecting GameObjects, Mesh assets, and FBX files.EXPERIMENTS.mdcovering MeshLab filters to avoid, required FBX export settings, symptom descriptions, and verification workflow.LightmapTransferTool.ExportFbx()to ensure exported meshes retain their canonical names instead of falling back to "Scene" on reimport.Changed Zones
Editor/— Editor tools / UIEXPERIMENTS.md)Checklist
.metafiles present for all new files/directoriesTest Plan
Tools → Mesh Lab → Validators → Check Imported MeshLab Artifacts.Review Notes
LightmapTransferToolis a small but important correctness improvement that prevents all exported meshes from being named "Scene" on reimport.https://claude.ai/code/session_01VcWmB88w3XUQMKQoDrohEp