gl-transitions/wgsl/StaticFade.wgsl

The open collection of GL Transitions

// StaticFade — WGSL, generated from https://github.com/gl-transitions/gl-transitions/blob/master/transitions/StaticFade.glsl
// Author: Ben Lucas
// License: MIT
// Description: Cuts to the incoming image halfway, hidden behind a burst of TV static
// Bindings and uniform layout: see the gl-transitions package README

struct Uniforms {
    progress: f32,
    ratio: f32,
    n_noise_pixels: f32,
    static_luminosity: f32,
}

@group(0) @binding(2) 
var _from: texture_2d<f32>;
@group(0) @binding(1) 
var _sampler: sampler;
@group(0) @binding(3) 
var _to: texture_2d<f32>;
@group(0) @binding(0) 
var<uniform> uniforms: Uniforms;
var<private> _fragColor: vec4<f32>;
var<private> _uv_1: vec2<f32>;

fn rnd(st: ptr<function, vec2<f32>>) -> f32 {
    let _e25 = (*st);
    return fract((sin(dot(_e25, vec2<f32>(10.530234f, 70.23493f))) * 12345.545f));
}

fn staticIntensity(t: ptr<function, f32>) -> f32 {
    var transitionProgress: f32;
    var transformedThreshold: f32;

    let _e27 = (*t);
    transitionProgress = abs((2f * (_e27 - 0.5f)));
    let _e31 = transitionProgress;
    transformedThreshold = ((1.2f * (1f - _e31)) - 0.1f);
    let _e35 = transformedThreshold;
    return min(1f, _e35);
}

fn staticNoise(st_1: ptr<function, vec2<f32>>, offset: ptr<function, f32>, luminosity: ptr<function, f32>) -> vec4<f32> {
    var staticR: f32;
    var param: vec2<f32>;
    var staticG: f32;
    var param_1: vec2<f32>;
    var staticB: f32;
    var param_2: vec2<f32>;

    let _e33 = (*luminosity);
    let _e34 = (*st_1);
    let _e35 = (*offset);
    let _e37 = (*offset);
    param = (_e34 * vec2<f32>((_e35 * 2f), (_e37 * 3f)));
    let _e41 = rnd((&param));
    staticR = (_e33 * _e41);
    let _e43 = (*luminosity);
    let _e44 = (*st_1);
    let _e45 = (*offset);
    let _e47 = (*offset);
    param_1 = (_e44 * vec2<f32>((_e45 * 3f), (_e47 * 5f)));
    let _e51 = rnd((&param_1));
    staticG = (_e43 * _e51);
    let _e53 = (*luminosity);
    let _e54 = (*st_1);
    let _e55 = (*offset);
    let _e57 = (*offset);
    param_2 = (_e54 * vec2<f32>((_e55 * 5f), (_e57 * 7f)));
    let _e61 = rnd((&param_2));
    staticB = (_e53 * _e61);
    let _e63 = staticR;
    let _e64 = staticG;
    let _e65 = staticB;
    return vec4<f32>(_e63, _e64, _e65, 1f);
}

fn getToColor(uv: ptr<function, vec2<f32>>) -> vec4<f32> {
    let _e26 = (*uv)[0u];
    let _e28 = (*uv)[1u];
    let _e31 = textureSampleLevel(_to, _sampler, vec2<f32>(_e26, (1f - _e28)), 0f);
    return _e31;
}

fn getFromColor(uv_1: ptr<function, vec2<f32>>) -> vec4<f32> {
    let _e26 = (*uv_1)[0u];
    let _e28 = (*uv_1)[1u];
    let _e31 = textureSampleLevel(_from, _sampler, vec2<f32>(_e26, (1f - _e28)), 0f);
    return _e31;
}

fn transition(uv_2: ptr<function, vec2<f32>>) -> vec4<f32> {
    var baseMix: f32;
    var transitionMix: vec4<f32>;
    var param_3: vec2<f32>;
    var param_4: vec2<f32>;
    var uvStatic: vec2<f32>;
    var staticColor: vec4<f32>;
    var param_5: vec2<f32>;
    var param_6: f32;
    var param_7: f32;
    var staticThresh: f32;
    var param_8: f32;
    var staticMix: f32;
    var param_9: vec2<f32>;

    let _e39 = uniforms.progress;
    baseMix = step(0.5f, _e39);
    let _e41 = (*uv_2);
    param_3 = _e41;
    let _e42 = getFromColor((&param_3));
    let _e43 = (*uv_2);
    param_4 = _e43;
    let _e44 = getToColor((&param_4));
    let _e45 = baseMix;
    transitionMix = mix(_e42, _e44, vec4(_e45));
    let _e48 = (*uv_2);
    let _e50 = uniforms.n_noise_pixels;
    let _e54 = uniforms.n_noise_pixels;
    uvStatic = (floor((_e48 * _e50)) / vec2(_e54));
    let _e57 = uvStatic;
    param_5 = _e57;
    let _e59 = uniforms.progress;
    param_6 = _e59;
    let _e61 = uniforms.static_luminosity;
    param_7 = _e61;
    let _e62 = staticNoise((&param_5), (&param_6), (&param_7));
    staticColor = _e62;
    let _e64 = uniforms.progress;
    param_8 = _e64;
    let _e65 = staticIntensity((&param_8));
    staticThresh = _e65;
    let _e66 = uvStatic;
    param_9 = _e66;
    let _e67 = rnd((&param_9));
    let _e68 = staticThresh;
    staticMix = step(_e67, _e68);
    let _e70 = transitionMix;
    let _e71 = staticColor;
    let _e72 = staticMix;
    return mix(_e70, _e71, vec4(_e72));
}

fn main_1() {
    var param_10: vec2<f32>;

    let _e25 = _uv_1;
    param_10 = _e25;
    let _e26 = transition((&param_10));
    _fragColor = _e26;
    return;
}

@fragment 
fn main(@location(0) _uv: vec2<f32>) -> @location(0) vec4<f32> {
    _uv_1 = _uv;
    main_1();
    let _e3 = _fragColor;
    return _e3;
}