Struct Material 

pub struct Material {
    pub base_color: Vec3,
    pub emission: Vec3,
    pub roughness: f32,
    pub metallic: f32,
    pub transmission: f32,
    pub ior: f32,
}

Compact physically based surface parameters in linear color space.

Call sanitized after changing public fields directly. The convenience constructors always return sanitized values.

Fields

base_color: Vec3

Diffuse albedo, metallic reflectance, or dielectric transmission tint.

emission: Vec3

Surface-emitted radiance. Values above one are valid for bright emitters.

roughness: f32

Microfacet roughness for non-transmissive surfaces, in 0.02..=1.0.

metallic: f32

Fraction of the opaque response that is metallic, in 0..=1.

transmission: f32

Fraction of energy assigned to dielectric transmission, in 0..=1.

ior: f32

Index of refraction of the material interior, in 1.0001..=3.0.

Implementations

impl Material

pub fn diffuse(color: Vec3) -> Self

Creates an opaque Lambertian material with color as its linear albedo.

pub fn metal(color: Vec3, roughness: f32) -> Self

Creates an opaque conductor with linear normal-incidence reflectance color and the requested perceptual roughness.

pub fn dielectric(color: Vec3, ior: f32) -> Self

Creates an ideal specular dielectric tinted by linear color.

ior is the material’s index of refraction relative to vacuum; common glass is approximately 1.5.

pub fn emissive(color: Vec3, strength: f32) -> Self

Creates a non-reflecting area emitter of linear color.

strength scales the emitted radiance and may be greater than one.

pub fn sanitized(self) -> Self

Returns a finite, energy-bounded copy suitable for transport.

Reflectance parameters are clamped to unit range. Transmission is reduced by the non-metallic fraction so a surface cannot spend the same energy on both a conductor and a dielectric lobe. Emission remains HDR, but negative and non-finite channels become zero.

Trait Implementations

impl Clone for Material

fn clone(&self) -> Material

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Material

impl Debug for Material

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

Formats the value using the given formatter.

impl Default for Material

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for Material

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Material