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Lighthouse Beam in Fog
A lighthouse on a dark headland sweeps a volumetric beam through low sea fog and flashes as it turns to face you. The token rate sets how fast the light turns and the fog churns.
Also known as: lighthouse shader, volumetric light beam, fog god rays glsl, night sea lighthouse.
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Customizing this shader
- Speed:
uTpsis the token rate anduTokensthe running count. The standalone runner adds a natural wobble to a fixed rate, the way real streams speed up and slow down. - Color: set
data-coloron the canvas, or changeuColorin the Shadertoy version. Currently previewing#ffd27a. - Size: style the canvas with CSS. It renders at up to twice your screen's pixel density and stops drawing while it is off screen.
- Reduced motion: the runner draws a single still frame for people who asked their OS for less motion.