Struct GpuLight 

#[repr(C)]
pub struct GpuLight {
    pub position: [f32; 3],
    pub range: f32,
    pub color: [f32; 3],
    pub intensity: f32,
    pub direction: [f32; 3],
    pub light_type: u32,
    pub inner_cone_cos: f32,
    pub outer_cone_cos: f32,
    pub shadow_map_index: i32,
    pub shadow_bias: f32,
    pub shadow_normal_bias: f32,
    pub _unused: f32,
}

GPU-friendly representation of a light source for compute shader processing.

This structure is designed for efficient GPU transfer and compute shader access. It uses a unified layout that can represent all light types.

Memory Layout

Total size: 72 bytes (18 × 4-byte fields), padded from 64 after shadow fields were added.

Fields

position: [f32; 3]

Light position in world space (ignored for directional lights).

range: f32

Maximum range of the light (point/spot lights only).

color: [f32; 3]

Light color (RGB, linear space).

intensity: f32

Light intensity multiplier.

direction: [f32; 3]

Light direction (normalized, for directional/spot lights).

light_type: u32

Light type: 0 = directional, 1 = point, 2 = spot.

inner_cone_cos: f32

Cosine of inner cone angle (spot lights only).

outer_cone_cos: f32

Cosine of outer cone angle (spot lights only).

shadow_map_index: i32

Index into the shadow texture array, or -1 if no shadow.

shadow_bias: f32

Shadow bias.

shadow_normal_bias: f32

Shadow normal bias.

_unused: f32

Padding/Reserved.

Implementations

impl GpuLight

pub const TYPE_DIRECTIONAL: u32 = 0

Light type constant for directional lights.

pub const TYPE_POINT: u32 = 1

Light type constant for point lights.

pub const TYPE_SPOT: u32 = 2

Light type constant for spot lights.

pub fn from_parts( position: [f32; 3], direction: [f32; 3], ty: &LightType, ) -> Self

Creates a GpuLight from world-space position, direction, and light properties.

Trait Implementations

impl Clone for GpuLight

fn clone(&self) -> GpuLight

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GpuLight

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

Formats the value using the given formatter.

impl Default for GpuLight

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for GpuLight

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Zeroable for GpuLight

fn zeroed() -> Self

Calls zeroed.

impl Copy for GpuLight

impl Pod for GpuLight

impl StructuralPartialEq for GpuLight