Demosthenes
This is my GLSL learnings and experiments
Demo
Useful Functions
float random(in vec2 st) {
return fract(sin(dot(st.xy, vec2(12.3456, 78.910))) * 12345.6789);
}vec2 random2(vec2 st) {
return fract(sin(vec2(dot(st, vec2(123.4, 567.8)), dot(st, vec2(876.5, 432.1)))) * 123456.789);
}vec3 hsb2rgb(in vec3 c) {
vec3 rgb = clamp(abs(mod(c.x * 6. + vec3(0., 4., 2.), 6.) - 3.) - 1., 0., 1.);
rgb = rgb * rgb * (3. - 2. * rgb);
return c.z * mix(vec3(1.), rgb, c.y);
}float fbm(in vec2 st) {
float v = 0.;
float a = .5;
for (int i = 0; i < OCTAVES; i++) {
v += a * noise(st);
st *= 2.;
a *= .67;
}
return v;
}