Note why xnnpack is fp32
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README.md
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@@ -25,6 +25,9 @@ already found.
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| `xnnpack/facemesh_xnnpack_fp32.pte` | xnnpack | fp32 |
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| `coreml/facemesh_coreml_fp16.pte` | coreml | fp16 |
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## Interface
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```
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| `xnnpack/facemesh_xnnpack_fp32.pte` | xnnpack | fp32 |
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| `coreml/facemesh_coreml_fp16.pte` | coreml | fp16 |
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xnnpack is fp32 on purpose: an int8 build ran 0.78x as fast on a Galaxy S26 Ultra and
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0.80x on an iPhone 16 Pro while drifting up to 6.3 px.
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## Interface
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```
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