Struct TextureRecipe 

pub struct TextureRecipe {

    pub kind: String,
    pub scale: f32,
    pub octaves: u32,
    pub seed: u32,
    pub colors: Vec<[f32; 3]>,
    pub roughness: [f32; 2],
    pub smoothness: Option<[f32; 2]>,
    pub metallic: [f32; 2],
    pub height: f32,
    pub ao: f32,
    pub size: u32,
    pub over: Option<Box<TextureRecipe>>,
    pub mix: f32,
    pub mask_scale: f32,
    pub mask_seed: u32,
    pub triplanar: f32,
}

One procedural material: a pattern drives everything. The pattern’s value (0–1 per texel) indexes the color ramp, lerps roughness/metallic between their two ends, acts as a height field for the normal map, and darkens crevices for ambient occlusion.

Fields

kind: String

Pattern: fbm (organic noise) · voronoi (stone cells + cracks) · bricks · wood (warped plank grain) · veins (marble) · checker · flat.

scale: f32

Pattern repeats across the tile (features per tile edge). Default 4.

octaves: u32

fbm octaves (detail). Default 4.

seed: u32

Determinism seed — same recipe, same texels, everywhere. Default 0.

colors: Vec<[f32; 3]>

Color ramp stops, evenly spaced over the pattern value. 1+ colors.

roughness: [f32; 2]

Roughness at pattern value 0 → 1. Default [0.9, 0.9].

smoothness: Option<[f32; 2]>

Unity’s spelling of the same dial, if you think that way: smoothness = 1 − roughness. When present it WINS over roughness (see TextureRecipe::rough_band) — one material vocabulary, two accents.

metallic: [f32; 2]

Metallic at pattern value 0 → 1. Default [0, 0].

height: f32

Normal-map strength — the pattern read as a height field. 0 = flat.

ao: f32

Crevice darkening strength (bakes into the occlusion channel). 0 = none.

size: u32

Baked texture side in texels. Default 256, clamped to MAX_SIZE.

over: Option<Box<TextureRecipe>>

A second recipe layered OVER this one, blended by an fbm mask — moss over granite, rust over iron, plaster over brick. One level deep.

mix: f32

How much of the overlay shows (0 none → 1 full). Default 0.5.

mask_scale: f32

Feature scale of the blend mask (default 3).

mask_seed: u32

Seed of the blend mask.

triplanar: f32

World-space triplanar sampling in the browser (uv repeats per metre; 0 = classic UV sampling). Kills projection seams on carved shapes — set ~0.5 for architecture. Exported GLBs keep UVs (glTF has no triplanar), so exports still look right, just with seams.

Implementations

impl TextureRecipe

pub fn rough_band(&self) -> [f32; 2]

The effective roughness band, honouring smoothness when given.

pub fn validate(&self) -> Result<(), String>

Trait Implementations

impl Clone for TextureRecipe

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TextureRecipe

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TextureRecipe

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for TextureRecipe

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for TextureRecipe

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for TextureRecipe