a Readable Space Invader Shader from shadertoy.com/view/ldcXD2

readable-format.shader

// Formatted for human reading: Space invader shader
// sauce: https://www.shadertoy.com/view/ldcXD2

void mainImage(out vec4 o, vec2 d) {
	float t = iTime;
	o += 1. - o + fract(
		.3 * t);
	d *= .03;
	for (int i = 0, y; i
		++ < 5;) o *= 1. > mod(((y = int(mod(
		t - d.y / o, 14.))) > 3 ? 35552534e8 : 56869384.) / exp2(
		float(y * 7 + int(abs(mod(d.x / o - 7. * cos(t), 14.) - 7.)))), 2.) ? .5 : 1.;
	o.z *= 2.;
}


// ORIGINAL:

// Created by Sebastien Durand - 2018
// License Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.


                    ////                     ////         
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                        ////             ////         
                        void             ////
                    mainImage(out vec4 o,vec2 d){
                    float t=iTime; o+=1.-o+fract(
                .3*t); d    *=.03;for(int    i=0 ,y;i
                ++<5;) o    *=1.>mod(((y=    int(mod(
            t-d.y/o,14.)))>3? 35552534e8:56869384.)/exp2(
            float(y*7+int(abs(mod(d.x/o-7.*cos(t),14.)-7.
            ))))    ,2.)?.5:1.;o.z*=2.;}/////////    ////
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