First-person 3D pong ray-traced on CPU in real time.

ray ten

Run in browser

Reimagining of a 1986 ZX Spectrum game room ten made with ray tracing. Completely ignoring GPUs when rendering 3D graphics is extremely inefficient, but ray-ten is quite efficient at being inefficient, thanks to portable-simd, rayon and cutting all the corners. I use macroquad for displaying the render and window controls because its WASM integration just works.

So what do I do?

Use the arrow keys to move the paddle trying not to miss the ball.

I'm on a phone and I have no physical keyboard.

You can also click/touch borders to move the paddle.

Why ray tracing tho?

Because modern graphics pipelines are boring and reflections are nice, even in low-res.

Couldn't you just use fragment shaders to the same effect? That would be infinitely more efficient.

That's true, I believe I could, maybe I'll try it next.

What's 'rps'?

That's rays-per-second, a handy way to gauge ray tracing throughput. Works like ersatz CPU benchmark unless fps are capped.

So what's the results then?

All browser versions are the most recent as of August 07, 2022. WASM modules are compiled with +simd128, optimized with wasm-opt -O4 and run in single core mode. Yes, mobile Firefox is faster than the desktop version.

That multicore difference is huge, can't you use rayon in WASM somehow?

I can, but that would require GitHub Pages to set COOP/COEP headers, and they aren't there yet, see community/community#13309.