dragon_eye

Glowing eye material for the stone dragon head in the fx_breath scene. The two eye entities (eye_1 and eye_-1, built-in spheres under the dragon parent) wear it.

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: [0.05, 0.01, 0.0, 1.0]: albedo, a very dark red-brown.
• emissive: [9.0, 1.6, 0.12, 1.0]: emissive colour; with emissive_intensity at 1.0 the eyes emit this orange at values above 1.
• roughness: 0.3: perceptual roughness.
• Every other pbr property keeps its default, including metallic 0.0.