This Stability AI Model is licensed under the Stability AI Community License,
Copyright © Stability AI Ltd. All Rights Reserved.

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Derivative Work notice
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The above attribution applies to the Stability AI Materials — the Stable Fast 3D
model (stabilityai/stable-fast-3d) from which these weights are derived.

This repository distributes a DERIVATIVE WORK of the Stability AI Materials.
The original Stable Fast 3D weights have been modified as follows:

  - Converted from the original PyTorch `model.safetensors` checkpoint into a
    single flat binary (`weights.bin`) laid out for direct loading by WebGPU
    compute shaders (a 16-byte header, a fixed-size tensor table, and packed,
    16-byte-aligned tensor data).
  - Cast to fp16.
  - 2D linear/projection weight tensors transposed from PyTorch's
    [out_features, in_features] to [in_features, out_features] for row-major
    shader access.
  - Illumination/global-estimator tensors and buffers not used by the WebGPU
    inference path omitted; marching-tetrahedra integer buffers retained.

No model architecture or learned parameter values were otherwise altered; this
is a format conversion of the original weights for browser (WebGPU) inference.

Conversion tooling: https://github.com/lyonsno/sf3d-webgpu
(see tools/convert_weights.py).