How To Improve Your Lighting w/ RTXGI
Рет қаралды 101,491
Күн бұрынThe first 1,000 people to use this link will get a 1 month free trial of Skillshare: skl.sh/williamfaucher10211
In this tutorial we talk about Nvidia's RTXGI plugin. This is a relatively new lighting method that completely leapfrogs the default Raytraced Global Illumination options in UE4 / Unreal Engine 4. While Unreal Engine 5 has Lumen, RTXGI is a worthy competitor. In this video we cover how to set up the plugin, how to use RTXGI, how it works, as well as a few other quality of life settings that are really good to know about.
You DON'T need an RTX gpu for this to work. But it should go without saying that you need to enable raytracing in your project settings for this to work.
Console Commands for RTXGI:
r.GlobalIllumination.ExperimentalPlugin 1
r.RTXGI.DDGI 1
Nvidia Documentation on RTXGI Playlist:
• Nvidia RTXGI Documenta...
ICVFX Production Test Scene:
www.unrealengine.com/marketpl...
#unrealengine
#RTXGI
#nvidia
---------------
Timestamps:
00:00 - Intro
01:01 - Skillshare
02:10 - How RTXGI Works
03:23 - Pros & Cons
05:33 - How To Install RTXGI
07:00 - How To Use RTXGI
09:07 - Nvidia's Documentation
12:18 - Using RTXGI in Large Environments/Worlds
14:32 - Fixing odd Lighting Artifacts
15:22 - Using RTXGI in Detailed Scenes
20:59 - Outro & Thanks
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@WilliamFaucher 2 жыл бұрын
The first 1,000 people to use this link will get a 1 month free trial of Skillshare: skl.sh/williamfaucher10211
@questtechnologies4330 2 жыл бұрын
Going through your previous video I have found you never ever develop your own project and only selectively pick topics for discussion that you know and even those you apply on some projects that are not your own developed once.
@questtechnologies4330 2 жыл бұрын
And yes you always point out that you are not taking credit for those projects but, I have found out that if you develop those projects on your own, then you might have more knowledge and your audience will grow faster
@WilliamFaucher 2 жыл бұрын
@@questtechnologies4330 I'm looking forward to watching your next UE4 tutorial since you seem informed on the topic!
@3dchick 2 жыл бұрын
I'm so glad you're getting sponsorships! It makes me happy to know you're getting some well-deserved recognition and the support you need to keep going. :-)
@conbuch9758 2 жыл бұрын
I've never found a youtube channel where EVERY SINGLE VIDEO is not only extremely helpful, directly useful, but also SO GOOD! William you are a genius man, thanks for sharing the knowledge.
@WilliamFaucher 2 жыл бұрын
Thanks so much Connor! Really appreciate it!
@Ferodra 2 жыл бұрын
Your channel helped me out SO much with Unreal, it's.. unreal! I even had to mention/link your videos in my study project documentations, as this content was nowhere to be seen during any of our lessons
@WilliamFaucher 2 жыл бұрын
Thanks so much! You’re too kind!
@iplaygames1999 2 жыл бұрын
Love the way you explain things in depth but not over complicate it. Thanks for another great video!
@WilliamFaucher 2 жыл бұрын
Thanks so much for watching :)
@jamesgoodman2931 2 жыл бұрын
Had no idea this was now available. Brilliantly concise as always!!
@garyerance 2 жыл бұрын
Great video once again William, thank you for taking the time out to explain this for us all.
@gborgesw 2 жыл бұрын
Incredible content, man! Thanks for the guide!!
@Tobe1Kanobee 2 жыл бұрын
Always look forward to your tutorials. You set the bar.
@mjspad 2 жыл бұрын
Im so glad I found your channel! thanks for all the great info. I am a digital artist, new to Unreal. I was wondering if you had any turorials on how to simply create an overcast day in Unreal Engine 5. All the tutorials I see everywhere have very direct lighting. I am looking to create a dark, gloomy icy landscape.
@andrey.003 Жыл бұрын
thank you. i didint even know about this plugin. going to try it right now
@teot3847 2 жыл бұрын
Hi William, so glad that I've run into your channel. Really appreciate that your tutorial are so in depth, from start to finish, especially where to locate the plugins and tips and caution that we need to consider. There's a tutorial that I've been searching for a while but could not find, I just wonder if you would be interested to do. That is making a stereoscopic movie using render queue. I could not find any tutorial for it. I'm not sure if VR and stereoscopic are any difference, and if no, how to output it as images for a movie or short film. Will appreciate it very much if you could do a tutorial on how to create stereoscopic in Unreal 4.27, to output it as images for production. Thanks in advance! Keep up the good work! And thanks for your contribution.
@lubruz7164 2 жыл бұрын
I have not idea about this, I was sitting and waiting for Lumen in UE5. Very nice to know.
@JavierGonzalez-qg5el 2 жыл бұрын
Can we change your name from Faucher to lifesaver?! Thanks for your helpful videos my guy. Great stuff.
@WilliamFaucher 2 жыл бұрын
Hahah thanks so much! I'm just glad it helps :)
@calvinromeyn 2 жыл бұрын
Thanks William! I love your videos, you've helped me out a ton!!
@Delli88Burn1 2 жыл бұрын
You're channel is now my go to for a recap btw projects. Such awesome work on yr artstation too. Thank you so much!!! A suggestion for a future topic. Lighting from a photographer's point of view(an exploration using physically accurate values of candela, lux). And when only to use post process or camera to bump up the exposure, min and max EV and indirect GI. Tonemapping to avoid highlight burns, and adding enough lights, if a single direct light source isn't enough.
@TheGabmeisterX 2 жыл бұрын
Amazing tutorials! Hoping to see more of these.
@nikolay-tsys 2 жыл бұрын
Thank you William! This is insanely good stuff here! And fantastic presentation!
@WilliamFaucher 2 жыл бұрын
Thank you!
@Xodroc 2 жыл бұрын
Have to say your channel is one of the best of the best, you do better at teaching than the official live streams more often than not. One thing I'd love to see you tackle is getting the best lighting for large open world VR, including day/night.. Lumen and Nanite(maybe later) don't support VR, so sadly can't put those to use yet. Thinking in terms of PC Desktop VR only, and not being limited by Android/Mobile. I figure hardware will reach the point where we might be able to do PCVR with deferred rendering as well in the future.
@mathieumechaussier6026 2 жыл бұрын
Hi! I wish to add some feedbacks from my own experimentations with RTXGI! -First of all, the RTXGI is not working with mesh with light channel other than light channel 0, whenever a mesh with light channel 1 or 2 activated enters the viewport, the RTXGI disappears! -When creating it, i'll advice to don't go over 15000 probes (or 25x25x25) or it might crash! Besides that, once set, it's pretty steady! -When you got meshes with translucency crossing other meshes (ex: Godrays, others FX with translucency, etc...), it can create some issues with the GI -Even if RTXGI update dynamically, it doesn't seems to support LightFunctions -The RTXGI can be hard to setup in exiguous places (leaks & shadow problems) If you got some solutions for any of these problems, i will be happy to hear it!^^ BYE
@WilliamFaucher 2 жыл бұрын
Feedback and thoughts are always welcome! I also noticed issues with lighting channels, those don't seem to work. Same thing with too many probes, it is easier to have one large volume with low probe count, and several other small volumes to get more accurate lighting in specific areas. It is definitely very finicky to set up in some areas, as it can look pretty buggy. But over all, it looks so great!
@lubruz7164 2 жыл бұрын
Thanks a lot for the info.
@SilvsFX3D 2 жыл бұрын
*I love your tutorials, thank you so much, greetings from Brazil.*
@potter1511 2 жыл бұрын
Fantastic walkthrough of RTXGI, one thing I think you also want to mention is that some probes got black and a red outline. That means they went to sleep and note contribute to the GI overall, according to NVIDIA, it doesn't affect the performance, but those dark probes occupy memory.
@jukai4091 2 жыл бұрын
ty mate, great work as always, luv it to watch u!
@Zoran_Zivic 2 жыл бұрын
As always great video. Big thanks for taking the time to make this tutorials, they were very helpful for me. I have dilemma that I hope you will be kind enough to help me with. I’m currently working on a project (interior of a disco club), it is a closed space and it will be lit with planes/polygons with video animations playing on them, and simple objects (cubes, cones and spheres) with emissive materials. No skylight, backdrop HDRIs or directional light. I’m supposed to make video animation for presentation, so frame rate is not that important for me. Until I watched this video I was sure this disco club will be my first complete ground up UE5 ArchViz project. Now I’m having second toughs about that, since you mentioned potential UE5 instability. I do not own RTX card, but GTX 1070Ti. Knowing that would you suggest me going with UE5 + Lumen, or UE4 + Nvidia RTXGI Plugin? Tnx.
@Starlingstudio 2 жыл бұрын
love your vids william thank you so much
@varunverma95 2 жыл бұрын
Awesome tutorial ! 🙌🏻
@cookieClarke 2 жыл бұрын
Thanks so much William. Excellent tut. The way you explain the process is very easy to follow. Cheers mate
@WilliamFaucher 2 жыл бұрын
Thank you!
@hubin1067 2 жыл бұрын
No words! Thanks,Sir.
@TheCrimsonSeven 2 жыл бұрын
Great video! Very compact.
@JohnB-ws4ge 2 жыл бұрын
i like your overall presentation, it was very well done.
@WilliamFaucher 2 жыл бұрын
Thanks for the kind words!
@ZeeroCool1979 2 жыл бұрын
Another amazing video! Thanks a lot!
@TanzeelAmjad 2 жыл бұрын
I love the way how you explain things. Amazing!
@WilliamFaucher 2 жыл бұрын
Thank you!
@eliascgi 2 жыл бұрын
Cool tutorial, thank you!
@mjaegerj 2 жыл бұрын
Great video! remember seeing this demo a while back.. forgot about it. and now its here! :D Awesome video and content as always! Thanks for sharing.
@WilliamFaucher 2 жыл бұрын
I feel you, it's one of those things that slips under the radar easily! Thanks for watching!
@QtittbChannel Жыл бұрын
There's a way to inject sky atmosphere and clouds to RTXGI through a material. The HDRI dome you have there needs to have a material with Raytracing switch to masked, so, if raytraced =1, if normal = 0, so it's invisible in viewport, then in emissive you plug in SkyAtmosphereIrradiance. This way you put Sky Atmosphere colors to material's emissive channel. Plus, for large worlds, you calso can attach DDGI volume to your character and make the probes either stay in place or follow the volume. So the volume can follow the player generating new probes and removing old when player moves. Really handy. Good video.
@edemyankah5290 2 жыл бұрын
Thank you William. Truly appreciate your videos.
@WilliamFaucher 2 жыл бұрын
The pleasure is mine! Thanks for watching!
@greaver5470 2 жыл бұрын
Clean, precise and appreciated. Thank you.
@WilliamFaucher 2 жыл бұрын
Thanks for watching!
@semiastyfx 2 жыл бұрын
That was grate tutorial pal. I do enjoy your way of teaching as its being clear and simple even with advanced topics. I would like to know if You got any courses from scratch to advanced level when it comes to UE ? i need something big, with loads of lessons and such. I know i could just watch your tutorials but i realy need to have one big video or course based on videos where i can learn ALL aspects of UE
@Adrian-zb2lu 2 жыл бұрын
Good video, I would like to see a video analysing the differences between Raytracing and Lumen.
@UndiniTuts 2 жыл бұрын
You're covering the kinds of subjects that I would have loved to have had when I started learning Unreal. Of course realtimeGI wasn't a thing then (except in misleading tech demoes). Great work.
@sebastientoccupe5704 2 жыл бұрын
Love the end of your vid! Thank you for helping us out.
@WilliamFaucher 2 жыл бұрын
The pleasure is mine! Thanks for watching!
@kmeson 2 жыл бұрын
Nice presentation. 1. Limit number of rays per frame to improve performance 2. Consider enabling a higher density scrolling DDGI volumes around player | camera 3. Consider multi-level DDGI volumes to improve fidelity over large areas, and areas of interest 4. Not much work to enable on current gen consoles
@uwekreuzahler3976 2 жыл бұрын
Thanks William. Again a super good tutorial. You are a rockstar!!!!!
@WilliamFaucher 2 жыл бұрын
Thanks so much! The pleasure is mine!
@burnplaysgames Жыл бұрын
Hey there, Lovely video. But I was wondering whether you could make a comparison between Lumen and RTXGI to see which is more feasible now
@warpenguinstudios 2 жыл бұрын
Great tutorial If one was to have an open word level with interiors. Would this work/be efficient to use standard dynamic lighting with the usual sky light. atmosphere, DFAO for exteriors and set up RTXGI on interiors? Or would it be best to just wait for the atmosphere fix to use it across the full level
@robsonfrancomaciel3716 2 жыл бұрын
You are the best, man! Thank you!!
@mansourahmednegadi6884 2 жыл бұрын
Thanks for this video that was really helpful. I only have question about reflexions gi, how can we add this ?
@moduloniko 2 жыл бұрын
wo , really nice tuto ! thanks you
@AhmedHasan91 2 жыл бұрын
Awesome thank you
@AICineVerseStudios 2 жыл бұрын
You are the best, every video is the best of yours. With each video, I just feel that I further get elevated pro for my work. Millions thanks to you and God bless you always!
@Danteaa2 2 жыл бұрын
great ! thanks for your insights
@WilliamFaucher 2 жыл бұрын
Cheers!
@AwakenIdiotic 2 жыл бұрын
Thank you very much
@user-ky7bz5qz2y 2 жыл бұрын
You are best~!Thank you very much~!
@horiamoldovean6074 2 жыл бұрын
Holy smokes this looks so GOOD!
@jhonsonmartinez7473 2 жыл бұрын
Hey thanks for the video and for the spanish subtitles
@VoxelVagrant 2 жыл бұрын
that sponsorship endorsement was elegantly introduced - and good to see you getting the support!
@WilliamFaucher 2 жыл бұрын
Thanks so much! I'm always a bit concerned they feel forced or over the top
@VoxelVagrant 2 жыл бұрын
@@WilliamFaucher I know the concern! No it was really well done :)
@vrai_ 2 жыл бұрын
KZfaq: "He's back." Me: Make a coffee.
@WilliamFaucher 2 жыл бұрын
Ahahah best comment
@jamesfield8023 2 жыл бұрын
Great video on a really useful topic. Was a shame I had to endure 10 un-skippable ads throughout the duration, but it was worth it.
@WilliamFaucher 2 жыл бұрын
Whoa what, 10 unskippable ones? That's not normal at all. Ads are a necessary evil but that is certainly more than you're supposed to get.
@elvismorellidigitalvisuala6211 2 жыл бұрын
This channel is PURE GOLD
@WilliamFaucher 2 жыл бұрын
Thank you so mcuh!
@karlehagen 2 жыл бұрын
Great video!! Just out of curiousity, in the beginning footage, any idea what's happening with the flickering vegetation at the foot of the stone pillar?
@WilliamFaucher 2 жыл бұрын
Not enough samples in my render :)
@mathajar9563 2 жыл бұрын
whoaw thats was really cool
@bowserlm 2 жыл бұрын
Comes at the absolute perfect time.
@7_of_1 2 жыл бұрын
Thanks William, have installed but not tried it yet. Those console commands at the beginning, are the required in the MRQ to render or just activate in the scene first?
@GiorgiBekurashvili 2 жыл бұрын
You are the best vlogger of Unreal Engine!!!!
@WilliamFaucher 2 жыл бұрын
Haha thanks so much!
@pigydog123 2 жыл бұрын
you deserve way more views dude
@WilliamFaucher 2 жыл бұрын
Thank you! We’ll get there :)
@pawekikta3909 2 жыл бұрын
Yes!! Will, you are amazing.
@WilliamFaucher 2 жыл бұрын
Thank you!
@MrYoungAndrew 2 жыл бұрын
Any chance you could do a walkthrough of that intro cave environment how you put it together or a link to the file !? Looks amazing!
@aweramu7107 2 жыл бұрын
Nice tut
@VRDivision 2 жыл бұрын
amazing my man!!
@WilliamFaucher 2 жыл бұрын
Thanks Yahiya!
@peterbikki8963 2 жыл бұрын
Hey William, Fantastic Tutorial! In terms of Skyatmosphere: you could try create a SkyAtmo Material mapped onto an inverse sphere, this trick worked for me on Mobile/VR-Quest where you also "couldn't have" Skyatmosphere the official way... Superb Content, Superb Work!
@WilliamFaucher 2 жыл бұрын
Oh clever solution you got there! Thanks for sharing!
@peterbikki8963 2 жыл бұрын
Also AFAIK that's going to be treated by DDGI as "Emissive", so you have like a separate intensity slider for Skylight
@Suthriel 2 жыл бұрын
Do you mean, using the whole Skyathmosphere system in a normal material for meshes? That is possible? o.O
@peterbikki8963 2 жыл бұрын
@@Suthriel for sure, it's described in the official showcasing demo here: kzfaq.info/get/bejne/ict-gJyrp7awc3U.html
@Suthriel 2 жыл бұрын
@@peterbikki8963 Oh my god, that really works :) only thing is, to make the pathtracer react to it, the "isSky" has to be disabled. Only with that off the pathtracer recognizes it, otherwise you can see it, but the pathtracer completey ignores your skysphere. And to let the sun shine through and cast shadows, the Skysphere itself shall not cast shadows (turn off the "cast shadows" on the sphere mesh).
@dunne54321 2 жыл бұрын
Hey William, thank you so much, there's one thing that's puzzling me, how do I know I'm working with RTXGI and not the standard gi from Unreal? I did all the steps over a project that had unreal rtx and I have no idea if this worked or not
@dasari_malleshbadra1822 2 жыл бұрын
Good one
@jamesgoodman2931 2 жыл бұрын
If you have several animated cameras in a camera cut, is that where the problem lies that it jumps to the next camera in the sequence without warming up in between? Any ideas how to handle reflections with this method?! Thanks!
@MR3DDev 2 жыл бұрын
You convinced me to switch back to UE4.
@user-en9zl7pz8f 2 жыл бұрын
Thank you very much for this tutorial. I have no problem using the RTX test file, but it fails after I create a new project. I am sure to enable the plug-in and enter 2 commands. I don’t know where the problem is
@pablocodeglia 2 жыл бұрын
OH man this is great! Too bad I don´t have a RTX ca... JUST KIDDING! Great info as usual William, thank you thank you!
@Morso.serhildan 2 жыл бұрын
good job bro ... my program has a problem ...my wind dot work for trees and grasses and dont moving i dont know why ???? thankyou so much if you give me information about that ...
@Dimitris_of_Ark 2 жыл бұрын
Please help me William. My hdri lighting doesn't seem to pass through my glass material in my archviz projects with rtxgi.what should I do???
@niilokin7280 2 жыл бұрын
Does the DDGI volume just override the default raytracing in the area it's placed? Only thing I've noticed is better performance after I place it so I guess it's working...
@hivestudiosinternational 2 жыл бұрын
Hi William. Thanks for this. Please note it won't show up if you have Raytrace Global Illumination switched on in a post process volume.
@xLuciii3 Жыл бұрын
is the graphics put into unreal engine gonna happen for other games too?
@AVISIONMUSICTV Жыл бұрын
Quick question. Has Nvidia combined all of its optimization systems into The DLSS plugin? Reflex, RTXgi ect? for UE 5.1
@chasan6978 2 жыл бұрын
Hello, master, I have been studying your UE tutorial and I like it very much. I have a question. Do you have any good suggestions about the translucent effect of clothes similar to silk veil? I am using the MASK method, and the TAA is jittered, and the screen accuracy is not up to the requirement. I hope you can reply. thanks
@WilliamFaucher 2 жыл бұрын
For translucent clothes I'd try Subsurface Scattering :)
@chasan6978 2 жыл бұрын
@@WilliamFaucher Thank you for your suggestion! I still need to try the performance of translucent tulle clothes. This is a problem that cannot be avoided. I will find a way to try again. Thanks for your advice! Good luck!
@veilight4444 2 жыл бұрын
When using RTXGI, would this be instead of the RayTracing GI in the PPV?
@MsDevilMaria 2 жыл бұрын
Thank you for the amazing tech guide as usual! In addition, If anyone dumb like me followed this amazing video and still get noisy result, make sure that you turnned off RTGI solution in your post process volume haha XD
@WilliamFaucher 2 жыл бұрын
Cheers Maria! Hahah that's a good point! I probably should have clarified that in the video! Thanks for the heads up!
@lilsquirt9889 2 жыл бұрын
I wanna give you a kiss for this one!!!
@amirhamzepourshafi8322 2 жыл бұрын
quality tuts. do you think it's good for archviz too?
@WilliamFaucher 2 жыл бұрын
Yeah absolutely!
@yesterday.7509 2 жыл бұрын
Hello sir, can you please upload more stuff about ue5 and thanks for all the informations
@WilliamFaucher 2 жыл бұрын
I will once UE5 is fully released, at the moment it is currently only in beta/early access.
@jinmick9998 2 жыл бұрын
Thank you man ,I'm wondering are you Unreal product manger or not Otherwise why you alwalys knew how to make it better
@WilliamFaucher 2 жыл бұрын
Cheers! I'm not a product manager and Epic isn't paying me for these videos, I'm just passionate about what I do :)
@williamminnaar6311 8 ай бұрын
Good day to you - A question, When I render my sequence in .exr format - the shadows are so black in DaVinici Resolve 18 - But not in Photoshop - Do you know why? Thanks so much :)
@WilliamFaucher 8 ай бұрын
Hi! It has to do with how each software handles linear footage. It’s a colorspace thing. You need to apply the correct colorspace conversion in Resolve, from linear sRGB to rec709 or ACES. I made a video about colorgrading in resolve, so you can see the process there.
@williamminnaar6311 8 ай бұрын
@@WilliamFaucher Thank you :)
@sebastianblatter7718 2 жыл бұрын
Hi William, what is causing the flickery highlights on the plants in the lower half?
@WilliamFaucher 2 жыл бұрын
Too few temporal samples, it is usually a bit worse in the out of focus areas and gets better when it's in sharp focus
@Jonsnovv 2 жыл бұрын
I have worked with Unreal (3/4/5) for many years, like 15+. Worked with lights in proprietary engines like Snowdrop, Cathode (Alien Isolation) and some other engines. I really like your videos. They always show me, what I do not know and there are still things I can learn. Absolutely loving the style, not overacting and staying serious. Please continue with this. Cheers!
@WilliamFaucher 2 жыл бұрын
Thanks so much for the kind words, Roman! Much appreciated! There's always more to learn for sure, I've been using Unreal since the UE3 and UDK days, even now I still learn new things all the time.
@h.ar.2937 2 жыл бұрын
Amazing stuf
@satishpillaigamedev 2 жыл бұрын
Hi Will, when i turned on the Visualize Probes the probe sphere looks black and i don't see it affecting the scene... DX12 enabled.... any suggestions ? do i need to enable raytracing on ?
@WilliamFaucher 2 жыл бұрын
Hi! Yeah you need to enable raytracing, anything with the term RTX in the name needs raytracing :)
@satishpillaigamedev 2 жыл бұрын
@@WilliamFaucher hey thanks i did enable it and it worked
@mauriceshapero7200 2 жыл бұрын
Brilliantly clear as ever William - thank you. The problem I have with unreal 5 is that glass doesn't work. I'm an architect and I design in 3d. Does this solve that? The beautiful Realtime GI with translucent, reflective glass?
@WilliamFaucher 2 жыл бұрын
Glass does work in UE5, you just need to disable Lumen :) This does solve that issue in UE4 somewhat though yes!
@mauriceshapero7200 2 жыл бұрын
@@WilliamFaucher Thanks William! Is there any work around for glass with Lumen on, or will we have to wait for unreal 5 to be updated?
@WilliamFaucher 2 жыл бұрын
@@mauriceshapero7200 Not that I know of. UE5 is still just an early access/beta, it isn't a full release so this may be resolved next year. Until then, you'll have to pick the lighting method that works best for you!
@mauriceshapero7200 2 жыл бұрын
@@WilliamFaucher I'm just downloading the Nvidia plug in!
@mauriceshapero7200 2 жыл бұрын
@@WilliamFaucher Sorry - one last question. Do you thing the nvidia GI will work with VR in 4.27? I've only got a 1080 so probably won't.
@cyberbanshee 2 жыл бұрын
So it’s like voxel GI system, especially when you add smaller volume with smaller probs for better details.
@ErikWerlin 2 жыл бұрын
Do you think you could do an updated version of the movie render queue and getting high quality renders in UE5?
@WilliamFaucher 2 жыл бұрын
I probably will once UE5 is fully released, but I won't bother now because it's just early-access, and nothing has fundamentally changed yet. Everything is pretty much exactly the same between UE4 and UE5 in terms of rendering. :)
@ErikWerlin 2 жыл бұрын
@@WilliamFaucher Sounds good. Thanks.
@kechekkk 2 жыл бұрын
light multiplier isn't working..didn't notice any difference in the GI even thought i followed the steps and activated RTXGI.. any idea to why this is happening and how i can fix it?! thanks :D
@letsplaysomthing3799 8 ай бұрын
hey there i have 1 question i wana made open world place with no lumen or raytracing just standard lightning and with day night time but when i try make cave or house it to bright inside and not natural how i can made to look more natural?
@WilliamFaucher 8 ай бұрын
Gonna need baked lightning!
@letsplaysomthing3799 8 ай бұрын
@@WilliamFaucher i do but its to bright i think i do wrong settings for postprocess or somthing.. will be happy to see any tutorials about that :)
@BookmansBlues 2 жыл бұрын
It does seem to swim a bit, but if you are moving the camera and have enough texture details it should be ok. Still has the TAA smudging effect. I will have to play with it to see if it is useful for me. I have known about it for a long time, but because I hate to have to rely on a plugin with an uncertain future, and only encompasses one aspect of lighting (ie will it vanish once UE5 adoption become more ubiquitous?). I guess I can only hope the Path Tracer or Octane becomes much more viable in a short amount of time. Also not sure if it was because of the fact that this was a demo, but do you always set up cheat lights prior to turning on GI? I usually wait to see what I need to do after the GI baseline is already established. Not a criticism, just curious, I am very much a process guy, and order of operations matter to me :) .
@WilliamFaucher 2 жыл бұрын
Even in UE5, there will likely be several GI options to choose from. Lumen isn't perfect, RTXGI isn't perfect, Pathtracing isnt perfect, each has their own pros and cons, you'll have to choose which one works best for your specific needs. There's no such thing as "cheat" lights. The only thing that matters is the end result. Ask any lighter, oe gaffer on a film set, the entire process of being a lighter, is a hack to create a visually pleasing, believable result. Of course I understand what you're asking, but in this case it wasn't to create more GI, I added more lights to get the direct lighting I wanted on the rock surfaces.
@BookmansBlues 2 жыл бұрын
@@WilliamFaucher yeah, in vfx we use it to describe non "practical" light sources. For example: you have things like The Sun, Lamps, The TV, these kinds of things are direct, "practical" sources. Once I typically have these defined, and I see where light naturally falls do I start either adding bounce cards, or additional lights to turn the form of a subject, as I try to keep things looking as natural as possible. At least when doing photorealism. If I do something more in line with NPR, I usually build up a recipe, it can be anything from a 3 point, or some other manner of stage lighting. Like I said, I'm a process guy, as much as I like to freeform for experimentation, when on a production, or building a pipeline, processes build in consistency. Current gig is something in between, because it has to look both real and staged, and is lit almost entirely with bounce cards, and projection cards when it has to match a film plate, or I need an interactive light for an FX element. Aside for some spec hits, there is no direct lighting at all. As for UE5, and GI, because Lumen also takes over for ray traced reflections, any other solution will also need that, or completely provide an entire lighting and shading solution. Something like Nvidia's real-time pathtracer comes to mind. Hopefully by this time next year there will be some comprehensive solutions that also include full renderbuffer/pass support. I have a gig coming up where that will be needed, and I generally prefer to work that way regardless. For me, render time is only the halfway point.
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