Struct ClusteredLightAssignment 

pub struct ClusteredLightAssignment {
    pub clusters_x: u32,
    pub clusters_y: u32,
    pub clusters_z: u32,
    pub clusters: Vec<LightCluster>,
    pub near: f32,
    pub far: f32,
    pub fov_y: f32,
    pub aspect: f32,
    pub view_matrix: Mat4,
    pub log_depth: bool,
}

3D frustum-based clustered light assignment for clustered forward rendering.

Fields

clusters_x: u32

Number of clusters in X (screen width).

clusters_y: u32

Number of clusters in Y (screen height).

clusters_z: u32

Number of clusters in Z (depth slices).

clusters: Vec<LightCluster>

All clusters stored in a flat array.

near: f32

Camera near plane.

far: f32

Camera far plane.

fov_y: f32

Field of view (vertical, in radians).

aspect: f32

Aspect ratio.

view_matrix: Mat4

View matrix for the current frame.

log_depth: bool

Logarithmic depth slice distribution.

Implementations

impl ClusteredLightAssignment

pub fn new( clusters_x: u32, clusters_y: u32, clusters_z: u32, near: f32, far: f32, fov_y: f32, aspect: f32, ) -> Self

pub fn depth_to_slice(&self, depth: f32) -> u32

Determine which Z slice a view-space depth falls into.

pub fn cluster_at( &self, pixel_x: u32, pixel_y: u32, depth: f32, screen_w: u32, screen_h: u32, ) -> usize

Get cluster index from a screen pixel and depth.

pub fn assign_lights(&mut self, lights: &[(LightId, Vec3, f32)])

Assign lights to clusters.

pub fn assign_lights_world(&mut self, lights: &[(LightId, &Light)])

Assign lights from world-space positions, transforming to view space first.

pub fn lights_for_cluster(&self, index: usize) -> &[LightId]

Get the lights for a specific cluster.

pub fn lights_at_pixel( &self, pixel_x: u32, pixel_y: u32, depth: f32, screen_w: u32, screen_h: u32, ) -> &[LightId]

Get the lights at a screen pixel and depth.

pub fn total_clusters(&self) -> usize

Total number of clusters.

pub fn stats(&self) -> ClusteredStats

Get statistics.

pub fn rebuild(&mut self)

Rebuild clusters (call when camera params change).

Trait Implementations

impl Clone for ClusteredLightAssignment

fn clone(&self) -> ClusteredLightAssignment

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ClusteredLightAssignment

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

Formats the value using the given formatter.