Struct VolumetricLightShafts 

pub struct VolumetricLightShafts {
    pub sample_count: u32,
    pub density: f32,
    pub weight: f32,
    pub decay: f32,
    pub exposure: f32,
    pub light_screen_pos: (f32, f32),
    pub light_color: Color,
    pub enabled: bool,
}

God rays via radial blur from a light’s screen position.

Fields

sample_count: u32

Number of samples along each ray.

density: f32

Density of the light shaft effect (0..1).

weight: f32

Weight for combining scattered light.

decay: f32

Decay factor per sample along the ray.

exposure: f32

Exposure multiplier.

light_screen_pos: (f32, f32)

Light screen-space position (0..1 in each axis). Updated per frame.

light_color: Color

Light color for the shafts.

enabled: bool

Whether the effect is enabled.

Implementations

impl VolumetricLightShafts

pub fn new(sample_count: u32) -> Self

pub fn update_light_position( &mut self, light_world_pos: Vec3, view_projection: &Mat4, )

Update the light’s screen position from a world position and view-projection matrix.

pub fn is_light_visible(&self) -> bool

Check if the light is on screen.

pub fn compute( &self, width: u32, height: u32, occlusion_buffer: &[f32], ) -> Vec<Color>

Apply the radial blur effect to a frame buffer. The input is a buffer of colors (width x height) and an occlusion buffer (same size). Returns the light shaft contribution buffer.

pub fn compute_half_res( &self, width: u32, height: u32, occlusion_buffer: &[f32], ) -> Vec<Color>

Apply a cheap half-resolution version for performance.

Trait Implementations

impl Clone for VolumetricLightShafts

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VolumetricLightShafts

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

Formats the value using the given formatter.

impl Default for VolumetricLightShafts

fn default() -> Self

Returns the “default value” for a type.