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fdbd0a6b8fyapf.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
44 lines
1.9 KiB
Markdown
44 lines
1.9 KiB
Markdown
# YAPF for Blender
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Import and export `.yapf` images in **Blender 4.2 or later** (tested with
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Blender 5.1).
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- **File → Import → YAPF Image (.yapf)** — optionally as a **plane** with a
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material that shows the image.
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- **Image Editor → Image → Open YAPF… / Save as YAPF…** (with mipmaps option).
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- **Drag and drop** `.yapf` files into the 3D Viewport (creates a plane), the
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Image Editor or a node editor.
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Blender cannot read `.yapf` on its own, so imported images are **packed into
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the .blend** and survive saving and reopening.
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Every YAPF file opens, version 1 and 2: 8-bit images; GPU blocks (BC1–BC7,
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BC6H) decoded; 16-bit, half and float textures as **float images** (HDR
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values above 1 are kept, packed as EXR); for cubes, arrays and animations
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the first image. Normal maps follow Blender's OpenGL convention: DirectX
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normals get their green flipped, and X/Y-only normals (such as BC5) get Z
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rebuilt. Version 2 files need the bundled native library; the pure-Python
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fallback reads version 1 only. Tested in Blender 4.4.3 (nixpkgs).
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## Install
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1. Get `yapf_image-blender.zip` from the
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[Releases](https://github.com/Nexoniarz/YAPF/releases), or build it (below).
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2. Blender → **Edit → Preferences → Get Extensions → ⌄ → Install from Disk…**
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and pick the zip.
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The zip contains the native YAPF library for Windows, macOS and Linux (x64
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and ARM64). Tested in Blender 5.1 on Linux; the Windows library is tested
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outside Blender, and the macOS libraries are cross-compiled and **not yet run
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on a Mac**. If no library matches your system, the extension still
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**imports** using a pure-Python decoder (numpy, bundled with Blender), but
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cannot export.
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## Build the zip
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```sh
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python3 extensions/blender/build.py # library for this machine only
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tools/build_release.sh # all platforms (needs zig)
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```
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Both write `dist/yapf_image-blender.zip`.
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