random number generation, noise and fbm, glsl
I should really change the name of this blog to Shader Shit.... anyway.. I'll get back to Unity specific crap one day. The following code is all for GLSL & will need adapting for use in a Unity fragment shader. I like to use Kodelife to test out my shader ideas. Look it up & give it some support if you like it! This post is about fake randomness, learnt from The Book of Shaders & The Art of Coding, on the website & youtube channel respectively. Within your main GLSL function, you might need to create a random value, often just a float value (remember you can make a vector from multiple floats). A great thing to feed such a random number generating function is your UV value. Here's an example- float random(vec2 uv){ return fract(sin(dot(uv,vec2(52.2957001,2355.957250024))*574.9829619)); } What we're doing here is getting the dot product of our UV coordinate, with an arbitrary vector that consists of large numbers with plenty of "complex" fractiona l...