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Клонировать Mesh перед запеканием трансформации, чтобы не мутировать sharedMesh #175

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Клонировать Mesh перед запеканием трансформации, чтобы не мутировать sharedMesh #175

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10 changes: 9 additions & 1 deletion Editor/Tools/LightmapTransferTool.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -3907,7 +3907,15 @@ static Dictionary<string, string> NormalizeExportHierarchy(GameObject root)
var mesh = childMf.sharedMesh;
if (!mesh.isReadable) continue;

BakeTransformIntoMesh(mesh, t);
// A cloned FBX hierarchy can contain several nodes that instance
// the same Mesh. Baking into sharedMesh directly would apply each
// node's transform cumulatively to that one object. Give every
// transformed node its own copy before mutating the vertex data.
var bakedMesh = UnityEngine.Object.Instantiate(mesh);
bakedMesh.name = mesh.name;
childMf.sharedMesh = bakedMesh;

BakeTransformIntoMesh(bakedMesh, t);

// Reset transform to identity
t.localPosition = Vector3.zero;
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