Struct truck_rendimpl::PolygonState

pub struct PolygonState {
    pub matrix: Matrix4,
    pub material: Material,
    pub texture: Option<Arc<Texture>>,
    pub backface_culling: bool,
}

Configures of instances.

Fields

matrix: Matrix4

instance matrix

material: Material

material of instance

texture: Option<Arc<Texture>>

texture of instance

backface_culling: bool

If this parameter is true, the backface culling will be activated.

Implementations

impl PolygonState

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

Creates a UNIFORM buffer of instance matrix.

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

Shader Examples

layout(set = 1, binding = 0) uniform ModelMatrix {
    mat4 uniform_matrix;
};

Examples found in repository

src/polygon_instance.rs (line 56)

    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),
            ],
        )
    }

pub fn material_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;
};

pub fn textureview_and_sampler(&self, device: &Device) -> (TextureView, Sampler)

Creates texture view and sampler of the instance’s texture image.

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

Shader Examples

layout(set = 1, binding = 2) uniform texture2D texture_view;
layout(set = 1, binding = 3) uniform sampler texture_sampler;

Examples found in repository

src/polygon_instance.rs (line 63)

    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 PolygonState

fn clone(&self) -> PolygonState

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PolygonState

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

Formats the value using the given formatter.

impl Default for PolygonState

fn default() -> PolygonState

Returns the “default value” for a type.