kodelife/GLSL simple noise code
Below is some code that generates some smooth looking noise. It isn't very complex, but it's probably good enough to get you going. Using code from The Art of Code youtube channel. Let's break down the important functions and see how they feed into one another. float N21(vec2 p){ return fract(sin(p.x*1000.0+p.y*6832.0)*5224.0); } This function takes a vector 2 "p", which is actually going to be our uv coordinate & multiplies each component(x and y) by two arbitrary large numbers , before getting the sine value. This small value is then multiplied by another large number, and then only the fractional part of that value is returned. On it's own, this will return nice static tv/white noise kinda values. You might call it in the main function like this - float c= N21(uv*4.0) Next up, is float smoothNoise(vec2 uv){ vec2 lv=fract(uv); lv=lv*lv*(3.0-2.0*lv); vec2 id=floor(uv); float bl=N21(id); float br=N21(id+vec2(1,0)); float b=m