toonFinish

Cel-shaded finish shader for the toon materials of syntheticsMaterials (toonPlastic, toonCarPaint, toonCeramic). The sun is cut into quantize_steps flat bands with lifted shadows, glossy finishes carry a hard-edged highlight disc (highlight, highlight_size), car paint adds the painted sky-and-ground reflection band stylised cars wear (band_reflect), and a rim band can be added at grazing angles. Adapted from fabricsMaterials' toonFabric (MIT). It scales with the scene's sun and ambient, so every lighting look still changes it. It lights itself, so the capture tool's albedo, roughness and metallic passes draw it magenta.