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EXT_mesh_gpu_instancing: Suggest extensionRequired usage #2405

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Aug 2, 2024
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2 changes: 2 additions & 0 deletions extensions/2.0/Vendor/EXT_mesh_gpu_instancing/README.md
Original file line number Diff line number Diff line change
Expand Up @@ -57,6 +57,8 @@ All attribute accessors in a given node **must** have the same `count`.

> **Implementation Note:** When instancing is used on the node, the non-instanced version of the mesh should not be rendered.

Because the extension does not provide a way to specify a non-instanced fallback, files that use the extension **should** specify it in `extensionsRequired` array.

## Transformation Order

When using instancing, the instance transform matrix is constructed by multiplying translation (if present), rotation (if present), and scale in the same order as they are for nodes:
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