precision highp float; uniform vec2 resolution; uniform float time; uniform vec2 mouse; uniform sampler2D backbuffer; const float PI2 = acos(-1.) * 2.; const float scale = 0.3; float hash1D(in float p) { return fract(sin(p) * 6124.7621); } vec2 hash21(in float p) { return fract(sin(vec2(p, p*1.4217)) * 6124.7621); } float hash2D(in vec2 p) { vec2 v = vec2(162.1732, 116.1734); return fract(sin(dot(p, v)) * 6124.7621); } float hash3D(in vec3 p) { vec3 v = vec3(123.4116, 162.3271, 137.1618); return fract(sin(dot(p, v)) * 6124.7621); } float noise3D(in vec3 p) { vec3 i = floor(p); vec3 f = fract(p); f = f * f * (3. - 2. * f); vec3 b = vec3(156, 12, 5); float n = dot(i, b); return mix( mix( mix(hash1D(n), hash1D(n + b.x), f.x), mix(hash1D(n + b.y), hash1D(n + b.x + b.y), f.x), f.y), mix( mix(hash1D(n + b.z), hash1D(n + b.x + b.z), f.x), mix(hash1D(n + b.y + b.z), hash1D(n + b.x + b.y + b.z), f.x), f.y), f.z); } float sdSeg(in vec2 p) { p = abs(p); return max(p.x - scale / 3., p.x + p.y - scale); } float sd0(in vec2 p) { p = abs(p); p.y -= scale; if(p.y > p.x) { p = p.yx; } p.x -= scale; return sdSeg(p); } float sd1(in vec2 p) { p.y = abs(p.y); p -= scale; return sdSeg(p); } float sd2(in vec2 p) { if(p.y < 0.) { p *= -1.; } p.y = abs(p.y - scale); if(p.y > p.x) { p = p.yx; } p.x -= scale; return sdSeg(p); } float sd3(in vec2 p) { p.y = abs(abs(p.y) - scale); if(p.y > p.x) { p = p.yx; } p.x -= scale; return sdSeg(p); } float sd4(in vec2 p) { float d = sdSeg(p - vec2(-scale, scale)); p.y = abs(p.y) - scale; if(p.y < -p.x) { p = -p.yx; } p.x -= scale; return min(d, sdSeg(p)); } float sd5(in vec2 p) { if(p.y < 0.) { p *= -1.; } p.y = abs(p.y - scale); if(p.y > -p.x) { p = -p.yx; } p.x += scale; return sdSeg(p); } float sd6(in vec2 p) { float d = sdSeg(p - vec2(scale, scale)); p = abs(p); p.y = abs(p.y - scale); if(p.y > p.x) { p = p.yx; } p.x -= scale; return max(-d, sdSeg(p)); } float sd7(in vec2 p) { float d = sdSeg(p - vec2(scale, -scale)); p.y -= scale; if(p.y > p.x) { p = p.yx; } p.x -= scale; return min(d, sdSeg(p)); } float sd8(in vec2 p) { p = abs(p); p.y = abs(p.y - scale); if(p.y > p.x) { p = p.yx; } p.x -= scale; return sdSeg(p); } float sd9(in vec2 p) { float d = sdSeg(p - vec2(-scale, -scale)); p = abs(p); p.y = abs(p.y - scale); if(p.y > p.x) { p = p.yx; } p.x -= scale; return max(-d, sdSeg(p)); } void main(void) { vec2 p = (gl_FragCoord.xy * 2. - resolution)/min(resolution.x, resolution.y); vec3 col = vec3(0); vec2 interval = vec2(3., 1.7); for(float i=0.; i<20.; i++) { float L = 1. - fract(time) + i; vec2 q = p / atan(.001, L) / 500.; L = dot(q,q) * 2. + L * L; float I = ceil(time) + i; q += hash21(I)*interval; vec3 ID = vec3(ceil(q / interval), I); q = mod(q, interval) - interval*.5; float n = hash3D(ID + ceil(time * 3.) * 1.3834); ID.y += ceil(time * 10. + hash2D(vec2(ID.x, I))); float n2 = noise3D(ID * .316572); float d = 0.; float N = 10.; if(n < 1. / N) { d = sd0(q); } else if(n < 2. / N) { d = sd1(q); } else if(n < 3. / N) { d = sd2(q); } else if(n < 4. / N) { d = sd3(q); } else if(n < 5. / N) { d = sd4(q); } else if(n < 6. / N) { d = sd5(q); } else if(n < 7. / N) { d = sd6(q); } else if(n < 8. / N) { d = sd7(q); } else if(n < 9. / N) { d = sd8(q); } else { d = sd9(q); } float temp = col.g; if(-scale*.27 < d && d < -scale*.067 && n2 < .5) { if(temp == 0.) { col += vec3(.3, 1, .4) * exp(-L * .002); } col += step(temp, .7) * pow(hash1D(n2), 32.); } } gl_FragColor = vec4(col, 1.0); }

Numbers in Cyberspace