rk_ground

Material for the launch pad in the fx_launch scene, where the launch_fx Generator runs proc/launch.procGraph, a looping heavy-lift rocket liftoff. Two built-in cubes wear it: the scene's ground (90 x 0.2 x 90 m at (0, -0.1, 260)) and the viewing_berm (26 x 5 x 26 m at (132, 2.5, 306)).

Shader: the built-in pbr shader, the engine's standard physically based material: the glTF metallic-roughness workflow lit by the shared pbr_shading model.

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: 0.10, g: 0.095, b: 0.085, a: 1.0 }: albedo, a dark brown-grey.
• roughness: 0.96: perceptual roughness.
• metallic: 0.0: dielectric.