radiance 0.7.1

Video art software designed for live performance
Documentation 
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#property description Radiate color from the center based on audio
#property frequency 1

fn main(uv: vec2<f32>) -> vec4<f32> {
    let fragColor = textureSample(iInputsTex[0], iSampler,  uv);
    let c = textureSample(iChannelsTex[1], iSampler,  uv);
    let c2 = c * (smoothstep(0., 0.2, iIntensity));
    return composite(c2, fragColor);
}
#buffershader
fn main(uv: vec2<f32>) -> vec4<f32> {
    let fragColor = textureSample(iChannelsTex[1], iSampler,  (uv - 0.5) * 0.98 + 0.5);
    let fragColor2 = fragColor * (exp((iIntensity - 2.) / 50.));
    let fragColor3 = max(fragColor2 - 0.00001, vec4<f32>(0.));

    let c = textureSample(iInputsTex[0], iSampler,  uv) * pow(defaultPulse, 2.);
    return max(fragColor3, c);
}