Results from Hunyuan World Mirror (original video captured with an iPhone 17 Pro).

It's still falling over with >60 images and I haven't had much success trying to stitching rooms together manually.

I keep coming back to LongSplat because it's exactly what I need but no luck so far.

The shadow problem was much simpler than I originally thought - it seems I disabled backface culling at some point! I suppose this projects shadows on both front-face and back-face, so the z-fighting was causing the flickering.

Debugging a very annoying problem with shadows. To me, thatbanding suggests some kind of shadow map texture precision/resolution issue. Problem is, I'm only seeing it when running inside Flutter, I can't replicate it in any standalone tests.

I've been integrating the ReactPhysics3D engine into Mixworld over the past couple of days. Really impressed with the library, it's quite capable despite being very lightweight (only 1.3mb for the macos build - I haven't built to WASM yet but I imagine it will be in the same ballpark).

Video in question

seed.bytedance.com/en/seed3d