Post

A new clustered froxel-based lighting prototype for Light Volumes 3.0.0! It uses froxels to precompute visible light IDs, so shader don't have to iterate through every light. This scene has 128 active lights and performs around 60 FPS on Android. ~13 FPS with no clustering.

20/7/26, 5:35 pm23 reposts114 likes

halo

TIL what a froxel is

Froxels are basically voxels that are aligned with your camera frustum. They usually start dense near the camera and go wider together with the camera FOV.

RED_SIM

@sim.red

20 July

60 FPS was tested on Google Pixel 9 Pro Fold - not the greatest GPU at all. Quest 3 was up to 45-50 FPS based on my test. And I still plan to improve it, so it will most probably be even better. And it's completely back compatible with VRCLV v.2.x.x, but will just ignore froxels.

heh. froxel.

@specialsauce.bsky.social

21 July

How much benefit are you seeing from clustering over normal tiled lighting? I would expect 3D memory lookups to struggle on mobile but I've not done mobile dev.

RED_SIM

@sim.red

21 July

3D gives almost no overhead, I think. Just consumes more memory...