rust_minifb/examples/noise.rs

extern crate minifb;

const WIDTH: usize = 1280;
const HEIGHT: usize = 720;

fn main() {
	let mut noise; 
	let mut carry; 
	let mut seed = 0xbeefu32;

    let mut buffer: [u32; WIDTH * HEIGHT] = [0; WIDTH * HEIGHT];

    if !(minifb::open("TestWindow", WIDTH, HEIGHT)) {
        return;
    }

    while minifb::update(&buffer) {
		for i in buffer.iter_mut() { 
			noise = seed;
			noise >>= 3;
			noise ^= seed;
			carry = noise & 1;
			noise >>= 1;
			seed >>= 1;
			seed |= carry << 30;
			noise &= 0xFF;
			*i = (noise << 16) | (noise << 8) | noise; 
		}
    }

    minifb::close();
}