Changeset 1948Tweet

Timestamp:

Sep 24, 2012, 8:44:41 AM (11 years ago)

Author:

sam

Message:

core: add some noise to the gradient effect.

File:

• trunk/src/gradient.lolfx (modified) (3 diffs)

trunk/src/gradient.lolfx

@@ -38 +38 @@
                     15.0, 10.0,  9.0, 14.0);
 
+float rand(vec2 p)
+{
+    return fract(sin(dot(p, vec2(12.9898, 78.2333))) * 123.4567);
+}
+
 void main()
 {
@@ -44 +49 @@
     int dx = int(mod(gl_FragCoord.x, 4.0));
     int dy = int(mod(gl_FragCoord.y, 4.0));
-    /* Cluster */
     float t;
     if (dx == 0)
@@ -66 +70 @@
                      [int(mod(gl_FragCoord.y, 4.0))];
 #endif
+    t += rand(gl_FragCoord.xy) - 0.5;
     t = (t + 0.5) / 17.0;
     col.x += fract(t - col.x) - t;