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Format (version 1, replaces the earlier experimental versions): - per-tile YCoCg-R or subtract-green colour transform, 8-bit modular - 12 row filters per 8-row band (Left, Gradient, Up-right, Up-average, Up 1-8 rows), none with more than a one-add serial dependency - residuals in groups of 8 at the group's width (w bits x 8 = w bytes), 4-bit control codes with repeat-previous-width runs chosen by DP - constant and stored tiles, independent 64x64 tiles, mips, GPU hints - all sizes validated before decoding; corrupt input is rejected Library: - SIMD on by default: SSSE3 (runtime CPUID check; GCC, Clang, MSVC, MinGW) and NEON on ARM64; -DYAPF_NO_SIMD for plain C - yapf_load_memory, yapf_load_mt, yapf_load_memory_mt - 6-10x faster decoding than PNG (stb_image) on one core; -O2 and -O3 builds perform the same - fixes for macOS (sysconf) and the Windows import library exports Tools and integrations: - `yapf` CLI: convert PNG/JPG/TGA/BMP/PSD/GIF <-> YAPF, info, bench, thumbnail, mips - JavaScript and Python bindings (byte-identical to the C encoder) - GIMP 3 plugin: exports the flattened image, optional mipmaps - Blender extension: import (also as plane), export, drag and drop - VS Code preview, Figma plugin, Photoshop scripts, Linux MIME type and thumbnailer - Makefile, updated build.sh / build.bat, tools/build_release.sh - tests/test_yapf.c (784 checks) and bindings/js/test.js Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
32 lines
1.2 KiB
Markdown
32 lines
1.2 KiB
Markdown
# YAPF for Figma
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- **Plugins → YAPF Image Format → Import YAPF image…** — choose or drop
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`.yapf` files; each becomes a rectangle filled with the image.
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- **Plugins → YAPF Image Format → Export selection as YAPF…** — every
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selected layer is exported at 1×, 2× or 4× and downloaded as `.yapf`.
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Both directions are pixel-exact: the plugin carries its own small PNG
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encoder/decoder instead of going through a canvas, which would alter
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semi-transparent pixels.
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## Install (development plugin)
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1. Use the **Figma desktop app**.
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2. **Plugins → Development → Import plugin from manifest…** and choose
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`extensions/figma/manifest.json` (or the one inside `yapf-figma.zip`
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from the [Releases](https://github.com/Nexoniarz/YAPF/releases)).
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3. Run it from **Plugins → Development → YAPF Image Format**.
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To publish it to the Figma Community, use **Publish** in the same menu;
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Figma then assigns the plugin its real `id`.
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## Build
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`ui.html` is generated: it inlines `bindings/js/yapf.js` and `src/png.js`
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into `src/ui.src.html`, because Figma loads the UI as a single file.
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```sh
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node build.js
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```
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Figma limits images to 4096 × 4096; larger `.yapf` files report an error.
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