16 lines
371 B
GLSL
16 lines
371 B
GLSL
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precision mediump float;
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uniform float u_clock;
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vec3 hsv2rgb(vec3 c) {
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vec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
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vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www);
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return c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
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}
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void main() {
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float color = mod(u_clock, 4096.0) / 4096.0;
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gl_FragColor = vec4(hsv2rgb(vec3(color, 0.8, 1.0)), 1.0);
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}
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