You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
43 lines
942 B
GLSL
43 lines
942 B
GLSL
// Author @patriciogv - 2015
|
|
// http://patriciogonzalezvivo.com
|
|
|
|
#ifdef GL_ES
|
|
precision mediump float;
|
|
#endif
|
|
|
|
uniform vec2 u_resolution;
|
|
uniform vec2 u_mouse;
|
|
uniform float u_time;
|
|
|
|
float random (in float x) { return fract(sin(x)*1e4); }
|
|
float noise (in float x) {
|
|
float i = floor(x);
|
|
float f = fract(x);
|
|
float u = f * f * (3.0 - 2.0 * f);
|
|
return mix(random(i), random(i + 1.0), u);
|
|
}
|
|
|
|
void main() {
|
|
vec2 st = gl_FragCoord.xy/u_resolution.xy;
|
|
st.x *= u_resolution.x/u_resolution.y;
|
|
|
|
vec3 color = vec3(0.0);
|
|
|
|
vec2 grid = vec2(20.0,2.0);
|
|
|
|
float t = u_time*max(grid.x,grid.y)*.5;
|
|
|
|
vec2 ipos = floor(st*grid);
|
|
vec2 fpos = fract(st*grid);
|
|
|
|
float offset = ipos.x+floor(t);
|
|
float value = pow(noise(offset*0.2),2.)+noise(offset*0.9)*.5;
|
|
|
|
if (mod(ipos.y,2.) == 0.) {
|
|
fpos.y = 1.0-fpos.y;
|
|
}
|
|
color += step(fpos.y*1.5,value)*step(.5,fpos.x);
|
|
|
|
gl_FragColor = vec4(color,1.0);
|
|
}
|