worn_surface

World-space triplanar PBR surface for the static set of Swords and Sandals NG: the arena's vertex-coloured runtime meshes (sand, travertine seating, marble) and the town's scaled box primitives (plaster walls, terracotta roofs, travertine paving). Textures repeat per metre (uv_scale = repeats per world unit) so nothing stretches on long walls, and the albedo is base_color x vertex colour x texture, with the texture optionally divided by its own mean colour (normalize_tex) so the authored palette keeps its hue while the generated texture adds the grain, chips, joints, stains and wear.