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by monkpit 20 days ago
Can someone explain the unreal demo linked here - is the reflection in the street also using splatting, or is it something else?
1 comments

Yes splats do reflections
Yes but in a weird way (at least on vanilla 3DGS) - it duplicates the splats on the mirror side.

Vanilla 3DGS cannot do any specular lighting or reflections - the color is basically baked in the splats. There's some active research going on to create richer Gaussian splats so we can do shading (or even ray tracing on it) - but haven't seen anyone using in production yet.

Is that weird, though? I thought that was a pretty common way to do reflections, but I’m not that well-versed in the latest tech in this space.