WALLPAPER GROUPS → ×× (pg)

precision highp float;
uniform vec2 resolution;
uniform vec2 mouse;
uniform float time;
out vec4 o;

vec2 pg(vec2 uv){
  uv.x=fract(uv.x);
  if(mod(floor(uv.y),2.)==0.)uv.x=1.-uv.x;
  uv.y=fract(uv.y);
  return uv;
}

void main(){
  vec2 uv = (gl_FragCoord.xy * 2. - resolution) / 
    min(resolution.x, resolution.y) * 2.5;
    
  uv = pg(uv);

  vec3 a=vec3(0,.85,.5),b=vec3(.9,0,.6),c=vec3(.95,.85,0);
  o.rgb+=mix(mix(a,b,uv.x),c,uv.y*1.4);
}