Struct truck_rendimpl::Material

pub struct Material {
    pub albedo: Vector4,
    pub roughness: f64,
    pub reflectance: f64,
    pub ambient_ratio: f64,
    pub background_ratio: f64,
    pub alpha_blend: bool,
}

Material information.

Each instance is rendered based on the microfacet theory.

Fields

albedo: Vector4

albedo, base color, [0, 1]-normalized rgba. Default is Vector4::new(1.0, 1.0, 1.0, 1.0).
Transparent by alpha is not yet supported in the current standard shader.

roughness: f64

roughness of the surface: [0, 1]. Default is 0.5.

reflectance: f64

ratio of specular: [0, 1]. Default is 0.25.

ambient_ratio: f64

ratio of ambient: [0, 1]. Default is 0.02.

background_ratio: f64

ratio of blending background color: [0, 1]. Default is 0.0.

alpha_blend: bool

alpha blend flag

Implementations

impl Material

pub fn buffer(&self, device: &Device) -> BufferHandler

Creates a UNIFORM buffer of material.

The bind group provided by the instances holds this uniform buffer.

Shader Examples

layout(set = 1, binding = 1) uniform Material {
    vec4 albedo;
    float roughness;
    float reflectance;
    float ambient_ratio;
};

Examples found in repository

src/instance_descriptor.rs (line 116)

    pub fn material_buffer(&self, device: &Device) -> BufferHandler { self.material.buffer(device) }

src/polygon_instance.rs (line 57)

    fn non_textured_bg(&self, device: &Device, layout: &BindGroupLayout) -> BindGroup {
        bind_group_util::create_bind_group(
            device,
            layout,
            vec![
                self.state.matrix_buffer(device).binding_resource(),
                self.state.material.buffer(device).binding_resource(),
            ],
        )
    }
    #[inline(always)]
    fn textured_bg(&self, device: &Device, layout: &BindGroupLayout) -> BindGroup {
        let (view, sampler) = self.state.textureview_and_sampler(device);
        bind_group_util::create_bind_group(
            device,
            layout,
            vec![
                self.state.matrix_buffer(device).binding_resource(),
                self.state.material.buffer(device).binding_resource(),
                BindingResource::TextureView(&view),
                BindingResource::Sampler(&sampler),
            ],
        )
    }

Trait Implementations

impl Clone for Material

fn clone(&self) -> Material

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Material

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

Formats the value using the given formatter.

impl Default for Material

fn default() -> Material

Returns the “default value” for a type.

impl Copy for Material