Interleaved vertices laid out per VERTEX_ATTRIBUTES
(position is the first 3 floats of each VERTEX_FLOATS-float vertex).
Typically a Mesh created with keepData: true (its vertexData).
Triangle-list indices (length a multiple of 3).
The flat ClusterData ready to upload.
Builds clusters (meshlets) from an interleaved vertex array + triangle indices.
Pure CPU — no
GPUDevice.awaitsMeshoptClusterizer.readyinternally, so it's safe to call before the wasm has finished loading.