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;
}
Tags
rainbow
The shader code and all code snippets in this post are under CC0 license and can be used freely without the author's permission. Images and videos, and assets depicted in those, do not fall under this license. For more info, see our License terms.

Related shaders

Moving Rainbow Gradient

Simple spatial CRT effect

Spatial particle shader

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