Updated pack sources

tools/packsrc/The Grid/shaders/Common.frag

@@ -0,0 +1,23 @@
+// This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0
+// Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/ 
+// or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA.
+// =========================================================================================================
+
+#define AA // Comment to deactivate antialiasing
+#define sat(a) clamp(a, 0., 1.)
+#define PI 3.141592653
+
+mat2 r2d(float a) { float c = cos(a), s = sin(a); return mat2(c, -s, s, c); }
+
+vec2 _min(vec2 a, vec2 b)
+{
+    if (a.x < b.x)
+        return a;
+    return b;
+}
+
+// Stolen from 0b5vr here https://www.shadertoy.com/view/ss3SD8
+float hash11(float p)
+{
+    return (fract(sin((p)*114.514)*1919.810));
+}