Lighting with GPU Lightmass | Tips & Tricks | Unreal Engine

[@XAHAK]

please more of this, there are zero gpu lightmass cource in unreal academy

[@scaredyfish]

Can we just get all the KZbin tutorials into the Learning hub? It would be great to have just one place to search for stuff.

[@russtecauto]

This is the best help for lighting ever. Much appreciation for this walkthrough. Thanks!!

[@yuntenglin7357]

Looking forward to the next class GPU Lightmass

[@JuanCarlos_SP]

Great video. I want more videos about gpu lightmass

[@user-dfarkjw3h]

Is RTX a must-have or will any video card work?

[@AndreiPek]

I have 2 1080ti and it works with that model

[@25knightcrawler]

It uses DXR, so it needs a GPU which supports hardware accelerated ray tracing.

[@SINfromPL]

@@25knightcrawler so that makes it near obsolete...

[@25knightcrawler]

@@SINfromPL I'm not sure I follow. RTX is quite new. Do you mean it won't be useful to a lot of people as they might not have an RTX card?

[@SINfromPL]

@@25knightcrawler unity had support for gpu light building for long long time, and it doesn't require rtx. Now i need a rtx card that is primarily mean for real time lighting, to bake the lighting?

[@giovannishull8704]

I get tons of crashes with GPU lightmass using an RTX 2080ti, tried updating all of my drivers but still crashes constantly. is there a way to use GPU lightmass without RTX features as well?

[@aa_19]

RTX is required, And what type of crash you're talking about??

[@ArchvizNow]

Did you try the one provided by Luoshang as a third party plugin?

[@moayadalhoussain1985]

Did you figure out why? I have RTX 3080 Ti and have same issue ?

[@otium8]

I have the RTX2070 Super and it crashes a lot when I edit any material. The solution was changing to Directx11, but still I haven't tried the bake that way.

[@2010Edgars]

Ok, but whats next? There are virtual shadow maps AND lights continue slowing system? How to use only this virtual maps NOT continuing lights emitting?

[@IRONFRIDGE]

Is it possible to build lighting like this. AND after deavtivate Raytracing again, and it stays baked?

[@jcdentonunatco]

yep it will stay stored in the lightmass data

[@vegitoblue2187]

does gpu lightmass work with android?

[@scaredyfish]

It's just faster light baking, so I don't think the target platform matters.

[@SlendyMawn]

a prerequisite of this is seemingly ray tracing, so i assume no.

[@retorique]

@@SlendyMawn A prerequisite for the dev, not for the end user.

[@SlendyMawn]

@@retorique I see.

[@Staglaitor]

And how can i bake lightmap if my GPU doesn't support raytracing?

[@jcdentonunatco]

you will have to use CPU based raytracing. You should be able to get the same results, but will be slower baking on cpu. Just use the traditional build lightmass settings

[@ghazinspace]

any solution for UE5 please

[@VeeIsDead]

is it absurd to have Lumen active as Global Illumination method while using GPULM? I'm trying to figure out all these terms and their overlaps, limitations and rigid usages

[@ZAKarchitects]

does that means no need for Luoshuang's GPULightmass? because i see new plugin released for ue4.26 and ue4.27 from Luoshuang ..

[@remi-life-happy-games]

i have things bug in Unreal Engine

[@flappybird315]

Isn't the lightmap density demonstated here too high?

[@Franciscomp70]

Can I use multiple gpu to bake the lights faster?

[@СлаваИзвеков]

"Enabling Multiple GPUs for Building Lighting " to link - docs.unrealengine.com/4.27/en-US/RenderingAndGraphics/GPULightmass/

[@jerobarraco]

Awesome, really great guide! one suggestion: my screen is 1080p is very hard to read your screen, it would be nice to have a lower resolution video.

[@zookinipokolini]

You can adjust the quality of any KZbin video by clicking on the gear on the play bar

[@BigMoneyGs]

skill issue

[@leandromartinez6196]

I noticed that volumentric lightmass is noisy as hell when its computed with gpu lightmass, compared with cpu.

[@LivingTheDream77]

Dosent lumen make light maps and light masses obsolete ?

[@Dhieen]

No, there will be alot of games made with baked lightings for more fps Lumen is 50 fps when a baked scene is 120+fps with my rtx3070 gpu

[@LivingTheDream77]

@@Dhieen baked scene dosent look as good as lumen. And lumen is dynamic, its way beyond baking.

[@Dhieen]

@@LivingTheDream77 baked scenes can look as good as lumen even better sometimes

[@LivingTheDream77]

@@Dhieen not at all, they also said lumen will have more features than baked ray tracing in the official release.

[@dicktator7294]

@@LivingTheDream77 wrong, your words are groundless. On static images, baked lighting will always be better than Lumen. The only downside are screen space reflections, lumen reflections are a lot better.

[@Helgrind44]

Does anybody knows where the ray tracing option is on UE5 ?

[@asdf256]

It's called Hardware Ray Tracing now

[@Helgrind44]

@@asdf256 Thanks, that what I used but I wasn't 100% sure :)

[@scpk2246]

guys, when I switch to GPU baking, the render is weird, it's too bright.. please help

[@FatalisArx]

Hi all, Is UE 4.27 GPU lightmass does better than UE 4.27 Luoshand GPU lightmass ?! any helpful link or suggestions ? thanks in advance

[@spencerwannop3401]

Thanks David

[@benz.1730]

Is this still needed with Lumen? I guess this is only for baked lighting and now outdated, right? Thanks for answer

[@nexttestpro6590]

Yes. But if you still want to optmize your project, the baked lighting system with static lights will be aways the better option in performance.

[@MegasVN69420]

Im using GTX 1650 i think its not able to do

[@yessnowww5345]

Version UE pleaze ?

[@SINfromPL]

Will it work with 4.21 or 4.24?

[@thoeme]

Nope only available with 4.26 onward

[@SINfromPL]

@@thoeme i hate how epic is gate keeping certain features in certain version. Not everyone can simply upgrade

[@Art1stical]

@@SINfromPL Why not?

[@SINfromPL]

@@Art1stical not everyone is building a project, i want to mod existing games, and gpu lightmap would boost a lot

[@edenassos]

@@SINfromPL That's a you problem. "Gate keeping" lol. It's like kids these days don't really know the meaning behind the word they're using. How is it "gate keeping" when they're just releasing the features as they go?

[@marciopereira1726]

just great

[@Krishna4k981]

Hey i like this

[@Xtravler9]

Where can I get the scene ??

[@denkozlov4220]

how would i bake mirrors

[@leavesfallen8185]

damn.All static point light disappeared in gpu lightmass

[@artdrawing6682]

I HAVE 11.283 SHADERS TO COMPLITE 😂

[@Flipside3D]

Far out

[@truongyog]

ko có gì đẹp bẳng cpu :v