I have been trying to do this online pattern generator using shading language.
Enter a formula: Example formulas to enter: (set1)
r = (0xff)*(x%2);
g = (0xff)*(y%2);
b = (0xff);//*(x^y);
(set2)
r = (int)((0xff)*Math.sin(10*x*Math.PI/180));
g = (0xff);
b = (0xff);