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Python binding and Blender read YAPF 2

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yapf.load_texture / decode_texture expose every surface and the texture
description; rgba_float() for display (blocks decoded, 16-bit / float
kept). Blender imports 16-bit / HDR as float images packed as EXR,
decodes GPU blocks, follows the normal-map convention (DirectX flip, Z
rebuilt for XY normals). Errors say why. Tested in Blender 4.4.3.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DVrVthWN8GsmgHGUhhsCYm
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Claude 2026-10-11 09:43:38 +00:00
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14
bindings/python/README.md
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@ -23,3 +23,17 @@ Without the library it falls back to a pure-Python decoder that needs
tells you which one is in use.
Example: `YAPF_LIBRARY=../../build/libyapf.so python3 example.py ../../other/YAPF.YAPF`
## Textures (YAPF 2)
```python
tex = yapf.load_texture("albedo.yapf") # any v1 / v2 file, needs the C library
tex.payload, tex.format, tex.sample, tex.channels, tex.mip_levels
tex.shape, tex.layers, tex.frames, tex.channel_map, tex.normal, tex.notes
raw = tex.surface(frame=0, layer=0, face=0, mip=0) # bytes as stored (GPU blocks / samples)
rgba = tex.rgba_float() # numpy float32 (h, w, 4) for display
```
`yapf.load` / `yapf.decode` still return 8-bit images; on a texture they
cannot represent they raise `YapfError` saying so. Errors name the
reason (damaged, truncated, not YAPF, newer version).