76 lines
2.5 KiB
GDScript
76 lines
2.5 KiB
GDScript
class_name UrbanMaterials
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extends RefCounted
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# CC0 scanned surfaces, metre-scaled world triplanar UVs. No runtime downloads.
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static var cache := {}
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static var textures := {}
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static func texture(path: String) -> Texture2D:
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if not textures.has(path):
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textures[path] = load(path)
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return textures[path]
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static func get_surface(kind: String, tint: Color = Color.WHITE) -> StandardMaterial3D:
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var key := kind + tint.to_html()
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if cache.has(key):
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return cache[key]
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var mat := StandardMaterial3D.new()
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mat.albedo_color = tint
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mat.roughness = 0.82
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mat.texture_filter = BaseMaterial3D.TEXTURE_FILTER_LINEAR_WITH_MIPMAPS_ANISOTROPIC
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mat.uv1_triplanar = true
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mat.uv1_world_triplanar = true
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# Tile width in metres (source scan dimensions), restrained normal strength.
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var maps := {
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"asphalt": [2.1, 0.3], "concrete": [2.71, 0.4],
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"plaster": [2.0, 0.22], "paving": [3.1, 0.45],
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"ground": [4.0, 0.6], "wood": [1.5, 0.3], "floor": [2.08, 0.25],
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"rock": [2.38, 0.9], "sand": [3.0, 0.8], "corrugated": [2.7, 0.85], "brick": [4.0, 0.65]
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}
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if maps.has(kind):
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var prefix: String = kind
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mat.albedo_texture = texture("res://assets/materials/%s_color.jpg" % prefix)
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mat.normal_enabled = true
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mat.normal_texture = texture("res://assets/materials/%s_normal.jpg" % prefix)
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mat.normal_scale = maps[kind][1]
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mat.roughness_texture = texture("res://assets/materials/%s_roughness.jpg" % prefix)
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mat.roughness_texture_channel = BaseMaterial3D.TEXTURE_CHANNEL_RED
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mat.uv1_scale = Vector3.ONE / float(maps[kind][0])
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mat.roughness = 1.0
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if kind == "asphalt":
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mat.roughness = 0.72
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mat.normal_scale = 0.5
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if kind == "corrugated": mat.metallic = 0.45
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elif kind in ["metal", "paint"]:
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mat.metallic = 0.78 if kind == "metal" else 0.35
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mat.roughness = 0.37 if kind == "metal" else 0.32
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mat.clearcoat_enabled = kind == "paint"
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mat.clearcoat = 0.5
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mat.clearcoat_roughness = 0.24
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elif kind == "glass":
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mat.albedo_color = tint * Color(0.23, 0.32, 0.36)
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mat.metallic = 0.65
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mat.roughness = 0.16
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elif kind == "rubber":
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mat.roughness = 0.94
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elif kind == "foliage":
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mat.roughness = 0.96
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mat.cull_mode = BaseMaterial3D.CULL_DISABLED
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var noise := FastNoiseLite.new()
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noise.seed = 7904
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noise.frequency = 0.09
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var tex := NoiseTexture2D.new()
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tex.width = 256
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tex.height = 256
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tex.seamless = true
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tex.noise = noise
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var gradient := Gradient.new()
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gradient.set_color(0, Color(0.28, 0.36, 0.28))
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gradient.set_color(1, Color(0.82, 0.87, 0.73))
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tex.color_ramp = gradient
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mat.albedo_texture = tex
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mat.uv1_scale = Vector3.ONE * 2.8
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cache[key] = mat
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return mat
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