upload_me_to_the_cloud.glsl

float smoothMod(float x, float y, float e){
    float top = cos(PI * (x/y)) * sin(PI * (x/y));
    float bot = pow(sin(PI * (x/y)),2.)+ pow(e, sin(time));
    float at = atan(top/bot);
    return y * (1./2.) - (1./PI) * at ;
}

void main () {
    vec2 masterUV = uvN();
    vec2 pos = masterUV;
    pos.x *= resolution.x/resolution.y;
    
    

    float wavy = sin(pos.y*40.)*(0.06*clamp(pos.y-0.2,0.,1.)) ;
    vec2 swirly = vec2(smoothMod(pos.x*10.,1.,0.2), smoothMod(pos.y*10.,1.,0.2));
    wavy+= atan(swirly.x,swirly.y)*0.01;
    vec2 newPos = pos + vec2(wavy,0.5);
    //newPos.y = mod(newPos.y - time/20., 1.);
    vec4 col = texture2D(channel0, newPos);
    pos *= resolution.y/ resolution;
    vec4 bb = texture2D(backbuffer, pos - vec2(0,0.01) - (wavy*0.1));
	gl_FragColor = mix(col, bb, clamp(newPos.y -0.2,0.,1.));
}