Ue4 Emissive lighting causes white splotches.

melviso

I am using ue4 for a project. I have noticed that using emissive lights causes splotches all over. Is there a way to eliminate it?

.Wiki

Some Screenshots and your lightmapper settings would be nice.

Obscura

I was actually windering if you will run into this issue with emissives.

melviso

@.Wiki Unfortunately, I can't post the screenshots. I am using gpu lightmass.

@Obscura Yeah, I noticed this doesn't happen with the native lights in UE4. Does subdividing the mesh with the emissive material multiple times solve this issue?
 Is there a way to solve this?

melviso

@Obscura Btw how has your experience with RTX been so far? I recently got an RTX 2080 8gb. Do u still use gpu lightmass or you have switched completely to RTX? I am thinking of going full rtx with future projects.

Obscura

These days I use rtx whenever its possible. It has its issues too, but its getting better.

melviso

@Obscura I am testing it out as well. How do you get rid of the black splotches in the shadow areas. They never seem to clear up?

Obscura

I'm not sure what are you talking about. Are you asking about how to get rid of artifacts from raytracing, or artifacts from a bake?

melviso

Raytracing

Obscura

Usually its done by using higher sample count. Are you using rtgi too? because shadows by itself doesn't produce artifacts. If you could show a picture of the issue we could probably sort it out faster.

Obscura

You should also try the built in path tracer. That is probably closer to what you want. Its a higher quality semi-realtime raytracer viewmode.

melviso

@Obscura I am trying the stereo paronamic plugin, I am trying to render out a video but it is not working. Only screenshot works even with the plug going to movie capture node.

Obscura

What happens? It renders nothing? Or separated frames?

melviso

Don't mind me. It renders the frames. Just takes a much much longer time for each frame to be rendered and saved to folder. I thought it would render fast like when u use sequencer to render out a movie. I wonder if there is a better plugin for rendering 360 videos faster.

Obscura

No this plugin uses bucket rendering (renders the image in small parts) using regular camera, instead of the spherical one, so all rendering features can show up on the end result. Multiple buckets are processed at once, so its generally slow.