shawnlawson · March 31, 2017 18:32 · Mar 31, 2017
diff --git a/exp.frag b/exp.frag
@@ -0,0 +1,24 @@
+
+void main() {
+    vec2 st = st(), stN = stN(); vec3 c = black; 
+    float theta = atan(st.x, st.y) / PI2; float phi = log(length(st));
+    float k = 1. * bands.y + 2.; float a = mod(theta, PI2/k); a = abs(a - PI2/k/2.);
+
+    vec2 r = rotate(vec2(bands.y - bands.x) * 2., st, time * .2 + bands.x);
+    vec2 r2 = rotate(vec2(bands.x - bands.y) * 2., st, time * .2 - bands.x);
+
+    vec3 v = voronoi(vec3(r *  3. * bands.y + st, bands.y * .3 + time * .1));
+    vec3 v2 = voronoi(vec3(r2 *  3. * bands.z + st, bands.z * .3 + time * .1));
+
+    c =  (1. -v.x) * min(orange, hsv2rgb(vec3(.9, sin(time), 1.))) * 1.5;
+    c += (1. - v2.x) * blue * 1.5;
+
+    vec3 bb = texture2D(backbuffer, stN).rgb;
+    c = mix(c, bb, .25 - .25 * length(bands));
+    // c = mix(c, bb, .2);
+    // c = pow(c * 1.8, 90. * white);
+    c = step(.5, c);
+    c = mix(c, bb, .9 + .05 * length(bands));
+
+    gl_FragColor=vec4(c, 1.0 );
+}