glTF: Implement support for morph target names #6904
Merged
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While morph target names aren't technically part of glTF spec, there is one de-facto standard for specifying them via mesh.extras, which is also called out in glTF specification as an implementation note. See KhronosGroup/glTF#1036.
This change adds support for using the names if they are present - the default morphTarget0, etc names are generated as a fallback.