Created
April 25, 2021 11:21
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| precision highp float; | |
| varying vec2 uv; | |
| uniform float time; | |
| uniform sampler2D img; | |
| vec3 palette( in float t, in vec3 a, in vec3 b, in vec3 c, in vec3 d ) { | |
| return a + b*cos( 6.28318*(c*t+d) ); | |
| } | |
| vec3 color (float t) { | |
| return palette( | |
| t, | |
| vec3(.5), | |
| vec3(.6 + .1 * cos(.3 * time)), | |
| vec3(1.), | |
| vec3(0.22, 0.5, 0.77) | |
| ); | |
| } | |
| void main() { | |
| float v = 1. - texture2D(img, uv).a; | |
| v = max(-step(fract(time), 0.5), v); | |
| gl_FragColor = vec4( | |
| step(v, 0.) * color(1.6 * (uv.y + time)) + | |
| step(0., v) * color(sqrt(max(v, 0.)) - 2. * time), | |
| 1.0); | |
| } |
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image used for https://www.hicetnunc.xyz/objkt/48081 :
https://greweb.me/images/tezos-dist.png