[−][src]Struct rpt::Material

pub struct Material {
    pub color: Color,
    pub index: f64,
    pub roughness: f64,
    pub metallic: f64,
    pub emittance: f64,
    pub transparent: bool,
}

Represents a shader material with some physical properties

Fields

color: Color

Albedo color

index: f64

Index of refraction

roughness: f64

Roughness parameter for Beckmann microfacet distribution

metallic: f64

Metallic versus dielectric

emittance: f64

Self-emittance of light

transparent: bool

Transmittance (e.g., glass)

Implementations

`impl Material`[src]

`pub fn diffuse(color: Color) -> Material`[src]

Perfect diffuse (Lambertian) material with a given color

`pub fn specular(color: Color, roughness: f64) -> Material`[src]

Specular material with a given color and roughness

`pub fn clear(index: f64, roughness: f64) -> Material`[src]

Clear material with a specified index of refraction and roughness (such as glass)

`pub fn transparent(color: Color, index: f64, roughness: f64) -> Material`[src]

Colored transparent material

`pub fn metallic(color: Color, roughness: f64) -> Material`[src]

Metallic material (has extra tinted specular reflections)

`pub fn light(color: Color, emittance: f64) -> Material`[src]

Perfect emissive material, useful for modeling area lights

`impl Material`[src]

`pub fn bsdf(&self, n: &DVec3, wo: &DVec3, wi: &DVec3) -> Color`[src]

Bidirectional scattering distribution function

n - surface normal vector
wo - unit direction vector toward the viewer
wi - unit direction vector toward the incident ray

This works for both opaque and transmissive materials, based on a Beckmann microfacet distribution model, Cook-Torrance shading for the specular component, and Lambertian shading for the diffuse component. Useful references:

http://www.codinglabs.net/article_physically_based_rendering_cook_torrance.aspx
https://computergraphics.stackexchange.com/q/4394
https://graphics.stanford.edu/courses/cs148-10-summer/docs/2006--degreve--reflection_refraction.pdf
http://www.pbr-book.org/3ed-2018/Materials/BSDFs.html
https://www.cs.cornell.edu/~srm/publications/EGSR07-btdf.pdf

`pub fn sample_f( &self, n: &DVec3, wo: &DVec3, rng: &mut StdRng ) -> Option<(DVec3, f64)>`[src]

Sample the light hemisphere, returning a tuple of (direction vector, PDF)

This implementation samples according to the Beckmann distribution function D. Specifically, it uses the fact that ∫ D(h) (n • h) dω = 1, which creates a probability distribution that can be sampled from using a probability integral transform.

We also need to sample from the diffuse BRDF as well, independently. We calculate the ratio of samples from the diffuse vs specular components by estimating the average magnitude of the Fresnel term.

Reference: https://agraphicsguy.wordpress.com/2015/11/01/sampling-microfacet-brdf/

Trait Implementations

`impl Clone for Material`[src]

`pub fn clone(&self) -> Material`[src]

`pub fn clone_from(&mut self, source: &Self)`1.0.0[src]

`impl Copy for Material`[src]

`impl Default for Material`[src]

`pub fn default() -> Self`[src]

Auto Trait Implementations

`impl RefUnwindSafe for Material`

`impl Send for Material`

`impl Sync for Material`

`impl Unpin for Material`

`impl UnwindSafe for Material`

Blanket Implementations

`impl<T> Any for T where T: 'static + ?Sized,` [src]

`pub fn type_id(&self) -> TypeId`[src]

`impl<T> Borrow<T> for T where T: ?Sized,` [src]

`pub fn borrow(&self) -> &T`[src]

`impl<T> BorrowMut<T> for T where T: ?Sized,` [src]

`pub fn borrow_mut(&mut self) -> &mut T`[src]

`impl<T> From<T> for T`[src]

`pub fn from(t: T) -> T`[src]

`impl<T, U> Into for T where U: From<T>,` [src]

`pub fn into(self) -> U`[src]

`impl<T> Pointable for T`

`pub const ALIGN: usize`

`type Init = T`

The type for initializers.

`pub unsafe fn init(init: <T as Pointable>::Init) -> usize`

`pub unsafe fn deref<'a>(ptr: usize) -> &'a T`

`pub unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T`

`pub unsafe fn drop(ptr: usize)`

`impl<T> Same<T> for T`

`type Output = T`

Should always be Self

`impl<SS, SP> SupersetOf<SS> for SP where SS: SubsetOf<SP>,`

`pub fn to_subset(&self) -> Option<SS>`

`pub fn is_in_subset(&self) -> bool`

`pub fn to_subset_unchecked(&self) -> SS`

`pub fn from_subset(element: &SS) -> SP`

`impl<T> ToOwned for T where T: Clone,` [src]

`type Owned = T`

The resulting type after obtaining ownership.

`pub fn to_owned(&self) -> T`[src]

`pub fn clone_into(&self, target: &mut T)`[src]

`impl<T, U> TryFrom for T where U: Into<T>,` [src]

`type Error = Infallible`

The type returned in the event of a conversion error.

`pub fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>`[src]

`impl<T, U> TryInto for T where U: TryFrom<T>,` [src]

`type Error = >::Error`

The type returned in the event of a conversion error.

[−][src]Struct rpt::Material

Fields

Implementations

impl Material[src]

pub fn diffuse(color: Color) -> Material[src]

pub fn specular(color: Color, roughness: f64) -> Material[src]

pub fn clear(index: f64, roughness: f64) -> Material[src]

pub fn transparent(color: Color, index: f64, roughness: f64) -> Material[src]

pub fn metallic(color: Color, roughness: f64) -> Material[src]

pub fn light(color: Color, emittance: f64) -> Material[src]

impl Material[src]

pub fn bsdf(&self, n: &DVec3, wo: &DVec3, wi: &DVec3) -> Color[src]

pub fn sample_f( &self, n: &DVec3, wo: &DVec3, rng: &mut StdRng) -> Option<(DVec3, f64)>[src]

Trait Implementations

impl Clone for Material[src]

pub fn clone(&self) -> Material[src]

pub fn clone_from(&mut self, source: &Self)1.0.0[src]

impl Copy for Material[src]

impl Default for Material[src]

pub fn default() -> Self[src]

Auto Trait Implementations

impl RefUnwindSafe for Material

impl Send for Material

impl Sync for Material

impl Unpin for Material

impl UnwindSafe for Material

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized, [src]

pub fn type_id(&self) -> TypeId[src]

impl<T> Borrow<T> for T where T: ?Sized, [src]

pub fn borrow(&self) -> &T[src]

impl<T> BorrowMut<T> for T where T: ?Sized, [src]

pub fn borrow_mut(&mut self) -> &mut T[src]

impl<T> From<T> for T[src]

pub fn from(t: T) -> T[src]

impl<T, U> Into<U> for T where U: From<T>, [src]

pub fn into(self) -> U[src]

impl<T> Pointable for T

pub const ALIGN: usize

type Init = T

pub unsafe fn init(init: <T as Pointable>::Init) -> usize

pub unsafe fn deref<'a>(ptr: usize) -> &'a T

pub unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

pub unsafe fn drop(ptr: usize)

impl<T> Same<T> for T

type Output = T

impl<SS, SP> SupersetOf<SS> for SP where SS: SubsetOf<SP>,

pub fn to_subset(&self) -> Option<SS>

pub fn is_in_subset(&self) -> bool

pub fn to_subset_unchecked(&self) -> SS

pub fn from_subset(element: &SS) -> SP

impl<T> ToOwned for T where T: Clone, [src]

type Owned = T

pub fn to_owned(&self) -> T[src]

pub fn clone_into(&self, target: &mut T)[src]

impl<T, U> TryFrom<U> for T where U: Into<T>, [src]

type Error = Infallible

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]

impl<T, U> TryInto<U> for T where U: TryFrom<T>, [src]

type Error = <U as TryFrom<T>>::Error

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]

impl<V, T> VZip<V> for T where V: MultiLane<T>,

pub fn vzip(self) -> V

`impl Material`[src]

`pub fn diffuse(color: Color) -> Material`[src]

`pub fn specular(color: Color, roughness: f64) -> Material`[src]

`pub fn clear(index: f64, roughness: f64) -> Material`[src]

`pub fn transparent(color: Color, index: f64, roughness: f64) -> Material`[src]

`pub fn metallic(color: Color, roughness: f64) -> Material`[src]

`pub fn light(color: Color, emittance: f64) -> Material`[src]

`impl Material`[src]

`pub fn bsdf(&self, n: &DVec3, wo: &DVec3, wi: &DVec3) -> Color`[src]

`pub fn sample_f( &self, n: &DVec3, wo: &DVec3, rng: &mut StdRng ) -> Option<(DVec3, f64)>`[src]

`impl Clone for Material`[src]

`pub fn clone(&self) -> Material`[src]

`pub fn clone_from(&mut self, source: &Self)`1.0.0[src]

`impl Copy for Material`[src]

`impl Default for Material`[src]

`pub fn default() -> Self`[src]

`impl RefUnwindSafe for Material`

`impl Send for Material`

`impl Sync for Material`

`impl Unpin for Material`

`impl UnwindSafe for Material`

`impl<T> Any for T where T: 'static + ?Sized,` [src]

`pub fn type_id(&self) -> TypeId`[src]

`impl<T> Borrow<T> for T where T: ?Sized,` [src]

`pub fn borrow(&self) -> &T`[src]

`impl<T> BorrowMut<T> for T where T: ?Sized,` [src]

`pub fn borrow_mut(&mut self) -> &mut T`[src]

`impl<T> From<T> for T`[src]

`pub fn from(t: T) -> T`[src]

`impl<T, U> Into<U> for T where U: From<T>,` [src]

`pub fn into(self) -> U`[src]

`impl<T> Pointable for T`

`pub const ALIGN: usize`

`type Init = T`

`pub unsafe fn init(init: <T as Pointable>::Init) -> usize`

`pub unsafe fn deref<'a>(ptr: usize) -> &'a T`

`pub unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T`

`pub unsafe fn drop(ptr: usize)`

`impl<T> Same<T> for T`

`type Output = T`

`impl<SS, SP> SupersetOf<SS> for SP where SS: SubsetOf<SP>,`

`pub fn to_subset(&self) -> Option<SS>`

`pub fn is_in_subset(&self) -> bool`

`pub fn to_subset_unchecked(&self) -> SS`

`pub fn from_subset(element: &SS) -> SP`

`impl<T> ToOwned for T where T: Clone,` [src]

`type Owned = T`

`pub fn to_owned(&self) -> T`[src]

`pub fn clone_into(&self, target: &mut T)`[src]

`impl<T, U> TryFrom<U> for T where U: Into<T>,` [src]

`type Error = Infallible`

`pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>`[src]

`impl<T, U> TryInto<U> for T where U: TryFrom<T>,` [src]

`type Error = <U as TryFrom<T>>::Error`

`pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>`[src]

`impl<V, T> VZip<V> for T where V: MultiLane<T>,`

`pub fn vzip(self) -> V`