bfloat16 and float16 dtype support

[amoskalev]

Will it be possible to add bfloat16 and float16 support at some point? Will be very helpful when working with large point clouds. Thanks!

[Caenorst]

Hi @amoskalev what specific features are you interested in? bfloat16 is usually not a good fit for storing coordinates, but we can add float16 if needed
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[github-actions]

Stale issue, please reopen if still relevant