Chat GPT - Spatial Rainbow Gradient

Spatial adaptation of Exuin’s Rainbow Gradient Shader entirely modified by Chat GPT

Original Shader by Exuin : https://godotshaders.com/shader/moving-rainbow-gradient/

Shader code

shader_type spatial;

const float PI = 3.1415926535;

uniform float strength: hint_range(0., 1.) = 0.5;
uniform float speed: hint_range(0., 10.) = 0.5;
uniform float angle: hint_range(0., 360.) = 0.;

void vertex() {
    // Pas de modification nécessaire dans la partie vertex du shader
}

void fragment() {
    float hue = UV.x * cos(radians(angle)) - UV.y * sin(radians(angle));
    hue = fract(hue + fract(TIME * speed));
    float x = 1. - abs(mod(hue / (1./ 6.), 2.) - 1.);
    vec3 rainbow;
    if (hue < 1./6.) {
        rainbow = vec3(1., x, 0.);
    } else if (hue < 1./3.) {
        rainbow = vec3(x, 1., 0);
    } else if (hue < 0.5) {
        rainbow = vec3(0, 1., x);
    } else if (hue < 2./3.) {
        rainbow = vec3(0., x, 1.);
    } else if (hue < 5./6.) {
        rainbow = vec3(x, 0., 1.);
    } else {
        rainbow = vec3(1., 0., x);
    }
    vec2 modifiedUV = vec2(UV.x, 1.0 + UV.y); // Inversion de l'axe Y
    vec4 color = texture(SCREEN_TEXTURE, modifiedUV);
    ALBEDO = mix(color.rgb, rainbow, strength);
    ALPHA = color.a;
}