Nope, I've had enough clicking :P Have this instead.

It's a bit broken of course; needs a denoiser, and likely a shadow cache, as screen-space stuff breaks apart at this scale.

This turns ReSTIR into stochastic (and lossy) light culling, exploiting the property that reservoirs contain a decent distribution of lights around each point.

Artifacts:
* Noise - especially with lights appearing & moving
* Darkening in areas affected by > 8 lights

This vs brute force when still:

Initially, I tried ReSTIR, but I didn't quite enjoy that even with a single light source it still produced noise. For our specific case it was kinda silly; I'd do all this complicated machinery just to end up denoising a known quantity.

In our next Tiny Glade update we'll bump the light limit from 32 to 32k while keeping the cost more or less the same.

The small limit has been a cop out, as we didn't quite know how to render huge numbers of (screen-space) shadow-casting lights without severe performance degradation.

And regarding the somewhat-unsatisfactory part about local lights, we've stirred and re-stirred, and we're about to lift the silly limit of 32 lights :P

Hey, y'all! 👋 I'm Tom (or Tomasz if you enjoy Hungarian Notation or Klingon)

I cause graphics devices to become lost, and generate all sorts of technical, design & artistic debt in Tiny Glade, together with @anopara.bsky.social, @lydmartin.bsky.social & @odaodaoda.bsky.social