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Skin weights must be normalized. #1352

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Jul 23, 2018
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Skin weights must be normalized. #1352

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635552d
Skin weights must be normalized.
May 31, 2018
77469e8
Remove weight sort requirement.
Jul 23, 2018
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2 changes: 2 additions & 0 deletions specification/2.0/README.md
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Expand Up @@ -910,6 +910,8 @@ The number of joints that influence one vertex is limited to 4, so referenced ac
* **`JOINTS_0`**: `UNSIGNED_BYTE` or `UNSIGNED_SHORT`
* **`WEIGHTS_0`**: `FLOAT`, or normalized `UNSIGNED_BYTE`, or normalized `UNSIGNED_SHORT`

The joint weights for each vertex must be >= 0, and normalized to have a linear sum of one. No joint may have more than one non-zero weight for a given vertex.

#### Joint Hierarchy

The joint hierarchy used for controlling skinned mesh pose is simply the glTF node hierarchy, with each node designated as a joint. The following example defines a joint hierarchy of two joints.
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