Hi everyone its been 2 days im stuck with a lighting issue.
When im too far my emmissive material does not work anymore.
However when im getting closer it work :
feel like its beyond the max range of global illumination.
i tried to double it through the post process volume but nothing changed.
Try 100000000, and same for maxtrace distance- maybe will work
already tried nothing changed
What’s your lumen scene visualization telling you? Lumen is sometimes picky about what it will include in the surface cache and what it won’t. Would you be able to post a screenshot of the surface cache visualization?
Emissive materials aren’t a good way to light a scene they should only be used as a minor effect
Well, yes and no on that front. The official epic guidance as taken from the lumen livestreams and documentation is that emissive lighting is completely acceptable, as long as it’s relatively big, and relatively dim.
If that scene is only being lit by emissives, then you’re probably going to have a bad time. They’re not small emissives, but they’re also not too big either.
Your light is probably getting culled just by moving throughout the lumen scene, but to fix that all you have to do is check ‘emissive light source’ and lumen should avoid culling it for much further than normal.
By and large though, you are right, this isn’t really a way anyone should construct a scene, if you’re just using emissives to light. There are a number of problems, but mostly lumen performance.
By an
yes thats what i heard small item arent good for this.
in the end i used point light.
Thanks.
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