Struct DirectionalLightData 

#[repr(C)]
pub struct DirectionalLightData {
    pub direction: [f32; 3],
    pub intensity: f32,
    pub color: [f32; 3],
    pub _pad: f32,
}

One directional light entry in LightUniforms. Layout (32 bytes) must match DirectionalLightData in every .metal shader. MSL shaders must declare float3 fields as packed_float3 in constant buffer structs; plain float3 has size=16 in MSL which shifts subsequent fields.

Fields

direction: [f32; 3]

Unit vector pointing TOWARD the light source (same as L in Blinn-Phong).

intensity: f32

Radiance scale.

color: [f32; 3]

Linear RGB light colour.

_pad: f32

Padding so the field layout matches the shader-side struct.

Trait Implementations

impl Clone for DirectionalLightData

fn clone(&self) -> DirectionalLightData

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DirectionalLightData

impl Debug for DirectionalLightData

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

Formats the value using the given formatter.

impl PartialEq for DirectionalLightData

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

Equality operator ==.

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

Inequality operator !=.

impl Pod for DirectionalLightData

impl StructuralPartialEq for DirectionalLightData

impl Zeroable for DirectionalLightData

fn zeroed() -> Self

Calls zeroed.