ELIMINATE noise in your reflections (Lumen UE5)

[@DevUnallocated]

Dude, you rock. Just finding out what components cause artefacts is super helpful. Love the other tech breakdowns as well!

[@marcfruchtman9473]

Thank you for the cool tip.

[@guillermo3dcode]

Thankyou so much!!!❣

[@Kogirius]

Where you've been all this time!)

Many thanks! I have a question if you don't mind: how did you find out which of the mountain of CVARs was actually useful? Was it just by tweaking them? I find that there's not a vast amount of documentation in depth last time i checked, and clearly there's a hierarchy to the usefulness of them, but this is not immediately obvious.

[@TechArtAlex]

It's mostly experimentation, but knowing which parts of the system you're trying to change helps a lot to narrow your focus.

@@TechArtAlex that makes sense, i need to revisit the technical docs and root through a bit more, I do wish ALL CVARS were documented, but I don't think that's gonna happen LOL

[@TechArtAlex]

Haha yeah, would be nice. Hovering over for the tooltip helps too, but it'd be great to have an up to date searchable list.

@@TechArtAlex I found a searchable list and youtube really helpfully assumed it was spam so I'm not sure if you'll see it in your comment filter. Also any attempt to type it in another way gets filtered 🤣 thousands of actual spammers unpunished, and people being helpful get filtered SMH

[@Crouberg]

Perfect! It's so useful! Thank you. Maybe you know, how to increase quality of distance field in lumen reflections? Increasing of Distance field resolution in actor don't help. Maybe some CVARs can help?

[@TechArtAlex]

This should depend on if you are using global tracing or detail tracing in your project settings. Global tracing uses a low resolution global distance field, whereas detail tracing should use the much higher quality per mesh distance field. If this is set to global, it may be why you aren't seeing a quality change. I primarily use hardware tracing, however, so I don't have a ton of experience with tweaking software RT settings.

[@Crouberg]

@@TechArtAlex Thnx! Changing on Detailing Tracing helped switch on more detailed MDF instead GDF. But now i see some kind of sphere of drawing. Zone where MDF replace GDF. I suppose that i should experiment with parameters in CVAR for changing radius of this "draw sphere" and with parameters of increasing quality for MDF and its shadows. If you have some advises, i will glad to hear them. In any case, i will experiment with this next and i very thankful for your help and your videos!

[@Vylocity]

Great find! CVARs are new to me and kind of daunting. Do they save to your project so next time you open it, its still applied?

[@juanibuscaglia3239]

No you have to add them to the .ini configs

[@TechArtAlex]

Or they can also be set by blueprint/code if you need to change this during runtime. This particular setting might be useful to update in real time as it would be wasteful to have these settings this high all the time.

[@Kogirius]

You can also put them into your movie render queue