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JavaScript port decodes YAPF 2; VS Code and Figma open every file

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yapf.js: decodeTexture (container, yapf-sum checks, code books with
context decoding, 16-bit / float planes, GPU block tiles), BC1-BC7 /
BC6H block decoding and textureToRGBA for display. Matches the C library
on 417 generated files (surfaces bit-exact) and survives fuzzing with
clean YapfErrors; fixtures in bindings/js/test-data keep it checked.

VS Code preview: pickers for mip, face, layer, frame and slice; storage,
normal-map convention and version in the info bar. Figma import:
textures converted to 8-bit, 8-bit images stay exact.

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 09:51:48 +00:00
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15
extensions/vscode/README.md
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@ -5,9 +5,13 @@ Click any `.yapf` file in VS Code to see the image.
- Checkerboard behind transparent pixels.
- **Click** to switch between *fit to window* and *100 %*; **Ctrl + scroll**
to zoom (pixels stay sharp when enlarged).
- Picker for every **mip level** stored in the file.
- Info bar: size, channels, sRGB / linear, GPU format hint, file size and
compression ratio, decode time.
- Opens every YAPF file, version 1 and 2: GPU blocks (BC1–BC7, BC6H)
decoded, 16-bit and float textures shown in 8-bit (floats sRGB encoded).
- Pickers for **mip level**, cube **face**, array **layer**, animation
**frame** and volume **slice**.
- Info bar: size, shape, storage (e.g. *GPU BC7*, *RGB half float*), sRGB /
linear, normal-map convention, format version, file size, decode time.
Damaged files say so (checksum mismatch).
- Reloads automatically when the file changes on disk.
Decoding runs in plain JavaScript inside the preview; no native code.
@ -30,5 +34,6 @@ Should work in VS Code 1.75+ and VS Code–based editors such as VSCodium.
The `.vsix` packages cleanly, and the preview code was tested in a browser
engine (headless Chromium) with real files: correct pixels, mip picker,
error message for corrupt files. **It has not yet been run inside VS Code
itself.**
error message for corrupt files; the YAPF 2 preview was tested the same
way (BC7, BC5, BC6H, half float, 16-bit, cube, animation, damaged and
non-YAPF files). **It has not yet been run inside VS Code itself.**