Refraction and Distortion with Scene Colour in UE4

[@marta05082000]

this was epic and exactly what i was looking for, thank you so much

[@tiechen8813]

Very Useful. Appreciate that you also give a way to do fake distortion!

[@maybegreat]

Useful stuff. To the point. Thanks :)

[@talosilobby2246]

legend

[@Shrooblord]

Hey. I've been trying to mess with the Scene Color node, but it's way too dark on my end. For some reason, it gets applied a 80% grey tint in-Editor. However, in the Material Editor, it looks great, just as expected. Any ideas on what's happening here?

[@tharlevfx]

Shrooblord is the material you’re applying it to using lit or unlit? It might be taking the lighting information from the scene?

[@Shrooblord]

@@tharlevfx It's unlit, and one-sided.

[@tharlevfx]

Shrooblord if it’s unlit then it should be exactly what’s behind the plane. Can you try an recreate the simplest material with it and see if it’s the material or scene? It’s difficult to help debug without seeing your setup...

[@Shrooblord]

@@tharlevfx Yes, certainly. Here's an AnswerHub post I made to try and repro the problem: answers.unrealengine.com/questions/939331/scene-color-node-too-dark.html

[@Shrooblord]

@@tharlevfx I just wanted to drop by to report I've solved my problem and anyone suffering something similar can visit the AnswerHub link provided for information on how I fixed it.

[@cyberspace7668]

Arc >OG You Earner the Favor of the Arc, Master. Expecting your arrival, within the silence, among the endless Void... Psi > Respect , when i saw that text in the bottom.. Best thing I saw in 5 month of 89% online Vision construction.

[@ty_teynium]

Is it true that my graphics settings have to be set to high for refraction to work? I saw a good tutorial but it didn't mention this and in fact was sked in question in the comments section.

[@tharlevfx]

the graphics settings are global controls that set lots of individual settings at once, but you can also set them individually and turn back on Refraction on low settings if you need to: answers.unrealengine.com/questions/355718/enable-refraction.html

[@YuuJer]

how about some refractions with raytracing?

[@tharlevfx]

Eugene Flormata I’ve not tried raytracing out yet but I’m not sure how well it copes with things like refraction. Something to try for sure!

[@muhammadfarsyahramadhan3196]

why closed a material emmisive color? if i used this material?

[@tharlevfx]

Muhammad Farsyah Ramadhan you can use this refraction technique with lit and unlit materials so you don’t have to use emissive. Look out for a future video about lighting and blend modes!

[@muhammadfarsyahramadhan3196]

@@tharlevfx i mean, this tutorial doesnt work if other material translucency

[@tharlevfx]

Muhammad Farsyah Ramadhan it needs to be either Additive or Translucent to be able to be not Opaque and be seen through.

[@muhammadfarsyahramadhan3196]

@@tharlevfx i have a translucent material (something like crystal), when i turn on this particle with your mat, it won't blend and replaced by this reflection (so my crystal is gone). Do you have any solution for this ? thank you.

[@tharlevfx]

Muhammad Farsyah Ramadhan ah I think I understand - the refraction is a post process that uses the opaque pixels already rendered in the refraction pass. This means other translucent actors won’t be refracted. You could try changing the other object to use a dither face instead of a translucent material.

[@AiletaEyail]

I did everything exactly as shown in the video and nothing happened. every distortion tutorial I watch results in nothing. kinda frustrated

[@tharlevfx]

Email me your material setup and I’ll try and help, I’m sure it’s just a simple setting

[@qwetry-j2u]

Hi! I'm having troubles with combining the refraction and the DepthFade in one material. Here is the issue I have - drive.google.com/open?id=18xzrZLYNWqdHENnhkiu_UQNzRJmhyTa9 I think the problem is with the DepthFade node. Can you please help me to find some workaround to get rid of these artifacts? I've tried all the methods described in this video, but nothing helped. Maybe I made something wrong..

[@qwetry-j2u]

Here is another version of my water material with a different approach of creating the distortion - drive.google.com/open?id=1qoILQs4SPSkIi-cJ1Nd4OsxG8-FMwCTx - but the artifacs are still there :(

[@tharlevfx]

yeah this is a problem with how refraction works in unreal - it's added as a post effect so you get this sort of errors, either with the geometry or the shadows. You can try using the depth fade to also fade out the refraction which will help around the intersection but there's not a great solution for this i'm afraid. If you're doing cinematics and need quality over performance you could try capturing the underwater with a scenecapture and then distort that texture, instead of the scene texture - that way the white box wouldnt be in the distortion. The problem is the engine can't draw what's behind the box as it's never rendered. Alternatively you could maybe make the box material translucent or additive so that it's not in the opaque render... just thinking out loud here but i think that should work.

[@Jadkoko2009]

Hi brother. I think this is real refraction in this link kzbin.info/www/bejne/rJbTenijm92Nr5o Can you tell us how to do it

[@tharlevfx]

Hey, unfortunate I’ve never worked with raytracing but I’ll add it to the list of things to get to eventually!