Optimized Black Hole

A multi-pass black hole that bakes relativistic ray traversal once into a G-buffer, then reuses it for animated disk shading, stars, antialiasing and HDR bloom.

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"use client";
 
import { useEffect, useRef, useState } from "react";
import { createRenderer } from "./renderer";
 
/** Standalone host for the optimized black-hole renderer formerly used by the homepage. */
export function Example() {
  const canvasRef = useRef<HTMLCanvasElement>(null);
  const [isReady, setIsReady] = useState(false);
 
  useEffect(() => {
    let cancelled = false;
    const canvas = canvasRef.current;
    if (!canvas) return;
    const renderer = createRenderer({ canvas });
    void renderer.ready.then(() => {
      if (!cancelled) setIsReady(true);
    });
    return () => {
      cancelled = true;
      renderer.dispose();
    };
  }, []);
 
  return (
    <div className="relative h-full w-full overflow-hidden bg-black">
      <canvas
        ref={canvasRef}
        className={`block h-full w-full touch-none transition-opacity duration-500 ${
          isReady ? "opacity-100" : "opacity-0"
        }`}
      />
    </div>
  );
}