Struct DistortionMap 

pub struct DistortionMap {
    pub width: u32,
    pub height: u32,
    /* private fields */
}

A CPU-side distortion map — an array of 2D UV offsets, one per pixel.

The GPU reads this as a 2D texture (RG32F) and uses it to offset UV lookups when sampling the scene texture.

Fields

width: u32

height: u32

Implementations

impl DistortionMap

pub fn new(width: u32, height: u32) -> Self

pub fn clear(&mut self)

pub fn set(&mut self, x: u32, y: u32, offset: Vec2)

pub fn get(&self, x: u32, y: u32) -> Vec2

pub fn add(&mut self, x: u32, y: u32, offset: Vec2)

pub fn as_f32_slice(&self) -> Vec<f32>

Raw f32 slice for GPU upload (RGBA32F, packed as [r_offset, g_offset, 0, 0] per pixel).

pub fn add_gravity_lens( &mut self, center_uv: Vec2, strength: f32, radius_uv: f32, )

Write a radial gravity lens distortion around a screen-space center.

center_uv in [0, 1], strength is UV units of max displacement, radius_uv is the falloff radius in UV units.

pub fn add_heat_shimmer( &mut self, region_min: Vec2, region_max: Vec2, strength: f32, time: f32, )

Write a heat shimmer distortion (Perlin noise based, animated by time).

pub fn clamp_offsets(&mut self, max_magnitude: f32)

Clamp all offsets to max_magnitude UV units.

pub fn pixel_count(&self) -> usize