blender-stylized-npr

1# Stylized / NPR
2 
3The execution model is in `blender-core`. Base colors still come from `blender-pbr-materials`/`blender-texturing`. This skill replaces how they're lit.
4 
5## One call each
6```
7scripts/toon_setup.py -- --objects Hero Sword --bands 2 --rim 0.4 --outline 0.004
8scripts/toon_setup.py -- --objects Hero --bands 3 --spec 0.3 --smooth-normals      # + engine outline data
9scripts/toon_setup.py -- --objects Hero --lighting scene                           # EEVEE: all lights + cast shadows
10scripts/toon_setup.py -- --line-art --outline 0                                    # scene-wide Line Art
11scripts/toon_setup.py -- --objects Hero Sword --remove --line-art                  # exact restore
12```
13 
14## toon_setup.py
15- Inserts an `NPR_Toon` emission group between each material's Principled base color and the output, and records the original surface link for `--remove`. Re-running updates values in place.
16- **`--lighting key`** (default, Cycles + EEVEE): shading = N·L against one sun (`--light`; `NPR_Key` is created if there's none). Drivers follow the sun's rotation, so rotate the sun to art-direct the shadow shape. This is how engine toon shaders work, and the look matches after export.
17- **`--lighting scene`**: Shader to RGB on a white diffuse, so every light and cast shadow shapes the bands. **EEVEE only.** Measured: in Cycles, Shader to RGB returns a constant regardless of light (identical render at 0, 3 and 10 W/m² sun).
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