anim_waves.wgsl — bevy-aqua-waves

Constants

LOD_COUNT

#

const LOD_COUNT: u32 = 5u

CASCADE_COUNT

#

const CASCADE_COUNT: u32 = LOD_COUNT + 1u

WAVE_COUNT

#

const WAVE_COUNT: u32 = 40u

TAU

#

const TAU: f32 = 6.283185307179586

PI

#

const PI: f32 = 3.141592653589793

NO_BED_DEPTH

#

const NO_BED_DEPTH: f32 = 256.0

Bindings

output

#

@group(0)

@binding(0)

var output: texture_storage_2d_array<rgba16float, write>

params

#

@group(0)

@binding(1)

var<uniform> params: AnimWavesUniform

bed_height

#

@group(0)

@binding(2)

var bed_height: texture_2d<f32>

Structures

CascadeParams

#

struct CascadeParams {

center: vec2<f32>,

scale: f32,

texture_res: f32,

inv_texture_res: f32,

texel_width: f32,

weight: f32,

max_wavelength: f32,

}

CascadeLayout

#

struct CascadeLayout {

cascades: array<CascadeParams, CASCADE_COUNT>,

center: vec4<f32>,

bed_transform: vec4<f32>,

bed_range: vec4<f32>,

}

GerstnerWave

#

struct GerstnerWave {

direction: vec2<f32>,

amplitude: f32,

wave_number: f32,

angular_frequency: f32,

phase: f32,

chop_amplitude: f32,

}

AnimWavesUniform

#

struct AnimWavesUniform {

cascade_layout: CascadeLayout,

waves: array<GerstnerWave, WAVE_COUNT>,

ranges: array<vec4<u32>, LOD_COUNT>,

time: vec4<f32>,

flow: vec4<f32>,

}

Functions

bed_water_depth

#

Water depth under the sea level from the game’s bed height map. Outside the mapped area (or with no map at all) the sample keeps the deep default, mirroring a full-depth capture texel. Nearest-texel read: the shoaling profile is smooth enough that one 5 m-class bed texel suffices.

fn bed_water_depth (

world_xz: vec2<f32>

) -> f32

shoaling_weights

#

A bounded finite-depth shoaling profile. The vertical lane retains more energy than horizontal chop through the breaker zone, producing steeper near-shore crests without changing deep-water phase or world anchoring.

fn shoaling_weights (

depth: f32,

wave_number: f32

) -> vec2<f32>

generate

#

fn generate (

@builtin(global_invocation_id)

id: vec3<u32>

)