op_dark

Material for the outpost under the energy-shield dome in the fx_shield scene (the Outpost entity at (110, 0, 150), the dome's centre). 13 entities wear it: the two lamp poles, the mast, the base, collar and lower torus of the central proj_ column (proj_base, proj_collar, proj_ring2), the roof and vent of each of the three habitats, and the cargo container cargo3.

Shader: the built-in pbr shader (@builtin::shaders.pbr), the engine's standard physically based material: the glTF metallic-roughness workflow lit by the shared pbr_shading model. Its glow output is emissive times emissive_intensity (default 1.0) times the emissive texture (default white).

Render state: the defaults (opaque blend, back faces culled, depth write on); mat.yaml sets only the shader and its values.

Properties

• base_color: { r: 0.045, g: 0.05, b: 0.06, a: 1.0 }: albedo, near black with a blue cast.
• emissive: { r: 0, g: 0, b: 0, a: 1.0 }: black, so it emits nothing.
• roughness: 0.45: perceptual roughness.
• metallic: 0.85: mostly metallic.