x
x
x
x
x
x
x
x
x
x

		/*

 * Original shader from: https://www.shadertoy.com/view/ftX3R8

 */

#ifdef GL_ES

precision mediump float;

#endif

// glslsandbox uniforms

uniform float time;

uniform vec2 resolution;

// shadertoy emulation

#define iTime time

#define iResolution resolution

// --------[ Original ShaderToy begins here ]---------- //

// neon circuit by it7c 

const float PI  = 3.141592653589793;

const float PI2 = PI* 2.;

#define saturate(x) clamp(x,0.,1.)

float tri(float x){return abs(2.*fract(x*.5-.25)-1.)*2.-1.;}

float sqr(float x){return -2.*(step(.5,fract(x*.5))-.5);}

float circuit(float x){return clamp(tri(x*4.)*.25,(sqr(x)-1.)*.5,(sqr(x+.5)+1.)*.5);}

float circuit2(float x){return clamp(tri(x*.5)*.5,0.,.25);}

float flow(float x,float d){return (1.+sin(x+d*iTime*5.+3.))*.3+.3;}

vec2 pp(vec2 p){float r=.5/p.y;return vec2(p.x*r, r);}

void mainImage( out vec4 fragColor, in vec2 fragCoord )

{

 float t=floor(iTime*40.)/100.;

 vec2 p = (fragCoord.xy * 2.0 - iResolution.xy) / min(iResolution.x, iResolution.y);

 float l=0.,d=sign(p.y);

 vec2 r = p;

 vec2 q = p;

 q=pp(q);

 float n = floor(q.x/.5);

 q.x=mod(q.x,.5)-.25;

 p=pp(p);

 l+=step(abs(q.x+circuit(q.y+sign(p.y)*t+n)),.005);

 l+=pow(.001/abs(p.x+circuit(p.y+d*t)),flow(p.y,d));

 l+=pow(.001/abs(p.x+.75+circuit2(p.y+d*t)),(1.+sin(p.y+d*iTime*5.))*.3+.3);

 l+=pow(.001/abs(p.x-.75+circuit2(p.y+d*t)),(1.+sin(p.y+d*iTime*5.))*.3+.3);

 l=saturate(l);

 l*=abs(r.y*2.);

 l*=abs(sin(r.y*200.+sign(p.y)*iTime*5.))*.5+.5;

 l+=pow(.001/abs(p.x+circuit(p.x+d*iTime)),(1.+sin(p.x+d*iTime*5.+3.))*.3+.3);

 fragColor = vec4(vec3(l)-vec3(.3,.1,0.), 1.0);

}

// --------[ Original ShaderToy ends here ]---------- //

void main(void)

{

    mainImage(gl_FragColor, gl_FragCoord.xy);

}