/* vim: set ft=c: */

/* <https://www.shadertoy.com/new> */

void mainImage(out vec4 fragColor, in vec2 fragCoord) {
    // Normalized pixel coordinates (from 0 to 1)
    vec2 uv = TexCoords; // fragCoord / iResolution.xy;
    // vec2 uv = fragCoord / iResolution.xy;

    // Time varying pixel color
    vec3 col = 0.5 + 0.5 * cos(iTime + fract (1.5 * (0.5 - uv.xyx) / (0.5 - uv.yxy) + iTime) + vec3(0, 2, 4));

    // Output to screen
    fragColor = vec4(col, 1.0);
}