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godot shaders

Brushed metal with a Ward anisotropic highlight

Brushed metal with a custom light function: a Ward anisotropic specular stretched along a brushing direction (linear along the tangent or circular around a UV centre) plus fine procedural brush streaks.

Recorded render of Brushed metal with a Ward anisotropic highlight

What this component contains

  • ATTRIBUTION.md
  • LICENSE
  • README.md
  • brushed_metal_anisotropic.gdshader
  • component.json
  • demo.tscn
  • inspect_shader.py
  • material.tres
  • preview.png
  • test_package.py
  • verification/native.json

How it works

Shader type
spatial
Parameters
metal_color (vec4 = 0.82, 0.83, 0.85, 1), roughness_along (float = 0.08), roughness_across (float = 0.45), circular (bool = no), circle_center_u (float = 0.5), circle_center_v (float = 0.5), streak_density (float = 600), streak_strength (float = 0.25) and 2 more
Use it on
A mesh with UVs and tangents.
Result
Metal with a bright highlight smeared along the brushing, here as rings across a spun disc.
Renderers
compatibility: compiled and rendered, forward plus: not verified, mobile: not verified
Placement
res://baltor/godot_shaders/brushed_metal_anisotropic/

Recorded checks

godot 4.7.2.stable.official.ed1daf0bf

  • contract_static
  • engine_run
  • engine_log_clean
  • shader_in_scene
  • capture_written
  • render_not_uniform
  • shader_changes_pixels

Limits to consider

Ignores environment reflections: only scene lights give specular, so add a light or use Godot's built-in ANISOTROPY output when reflections matter. Ward's model is not energy conserving at grazing angles. Circular brushing needs UVs centred on the disc (the CylinderMesh caps qualify).