Ray Traced Ambient Occlusion - UE4 Materials 101 - Episode 40

first comment

gosh darn it second comment

I love your videos

Hey Ben, thanks for the video, do you think it's possible that the lighting information can be baked onto the materials to save on rendering cycles instead of calculating in real time, especially in static scenes? I'm thinking of light baking on materials but it's done in real time instead of building time.

Hey Ben, nice explanation! But i think you missed to talk about Distance Field Ambient Occlusion that is more accurate than SSAO

Very usefull videos. Would it be possible to add English subtitles to all movies?

thanks

Hey Ben, sorry for commenting something unrelated to the video, but could you please make a tutorial on how to use Color ID maps inside the UE4 editor, for example use one color ID for a metal surface and another color ID for water? I wonder if I can have the simple wind grass node only affect the part of the mesh where the UV islands for water is, based on a color ID map. Thanks in advance and sorry for asking for your attention like this, but I can't find a single tutorial on this subject.

Great video. Thank you.

thx Ben

If Ray-Traced AO is turned on, how does the engine handle AO layers in Materials? Are they ignored or incorporated?

As another comment here mentioned, I was also wondering if it is better to render out AO in a seperate 3D program like Substance Painter etc. So you have it baked onto the texture itself, instead of doing it this way, or maybe there's a way to bake it in Unreal Engine itself.

Then why use Real time raytraced AO? Only for moving objects, or am I missing something here?

Hello, is there a way to bake ambient occlusion in ue4, having a similar or close to similar result as the ray traced version without using the SSAO. Btw lighting and objects would are not dynamic.

thank you for the tutorial, i wish you posted this video last year,

nice one !!

Brilliant tutorials! Not too short, not too long, and well explained from both - users and programmers perspective! I think that particular scene with so many textures and additional lights didn’t benefit much from the AO added though, when you showed it in the final results.

why in my scene the Raytraced AO is visible only if i turn off the SSO?

Didi you try to do edge wear?

amazing tutorial Ben, i'm following up all your tuts! very underrated!

When I try this - RTAO changes absolutely nothing in the buffer visualisation of AO. What am I doing wrong?

Thank you

Thank you so much Ben, you are an amazing teacher, Ray tracing couldn't be explained better than this. you are really my life savior.

Great video, thank you. Maybe someone can clear up my confusion though: isn't ambient occlusion something that 'naturally happens' as light bounces around a scene, e.g. one of the global illumination solutions available in Unreal? Aren't we 'double occluding' if we do a light bake or ray-traced GI and then throw ambient occlusion on top of that?

I tried to follow the steps to turn it on. nothing happens

so do you still need to retrace the AO with lumen?

Omg what a gold mine this channel is! Content like this whole series is like the best thing I know of. Super excited to go through more of these! This is teaching how to fish, not just telling what settings to throw in somewhere. Massive respect for all the hard work :)

Thank you, sir, very well done on theory explanation and example!

Ty, explained what it does with visuals.

i did everything

nothing happened

Somehow after I complete light building and I am trying to use the method you are showing, the ambient occlusion is not working. I am using 4.26. Is there something that needs to be enabled before light baking?

i dont have rtx 😑inshallah i will have one

not work with ue5.1 and lumen !!