engine-source

[thick furnace]

it only seem to affect very large repos and issues

[cosmic stump]

Issues are fine on small/med repos

Linux repo works fine too, which is not a small repo

Blender github repo works fine too

[lunar prairie]

Came here to see if it was just me, apparently not lol

[versed lark]

I am also experiencing issues

[brazen jackal]

Seems everyone's having issues tho

[lament wasp]

ouch... yup i just confirmed that merely typing in a source file forces a rebuild.

0>UbaServer - Listening on 0.0.0.0:1345
0>------ Building 4095 action(s) started ------

using rider:
i accidently added a blank line to WindowsPlatformMutex.h ... I even removed the blank line before building and it still forced a source rebuild

any way to prevent this?

[daring holly]

Ugh it's still happening. Does no one at Github know theres a issue?

I opened a ticket with GitHub, time to see if they ever respond (ticket #3860442)

[wet quail]

Are you from one of the countries under any sanctions?

[smoky goblet]

It's not that. Lots of people are reporting issues.

[dusky compass]

gh went to shit since Ms bought it, that was expected

[daring holly]

Nope, I'm in the US

[oblique pebble]

guys if you all need to download from the epic games github while its inaccessible this command works as i found a way to clone the unreal engine from github even while its down

git clone --depth 1 --branch release https://github.com/EpicGames/UnrealEngine this actually works

i just tried it and i was able to obtain a fresh copy of ue 5.61 release

apparently their cdn is still up. its just the repository thats inaccessible via their web api

this took a good bit of digging on youtube but i managed to find a workaround

[cosmic stump]

is US under sanctions? 😄

what bugs me is that Epic hasn't commented on the situation

[daring holly]

I don't think they even know it's a problem

[oblique pebble]

holy crap. i followed this one unreal youtuber's guide on how to build UE engine from source quickly and correctly.. final output engine folder size is 145 gb

of course i excluded a lot of unneccesary platforms that he specified were safe to exclude since im not using them and wow what a size drop

also the build time was FAR less! 1 hr 25 minutes compared to 3+ hours like it usually takes on my 2.90 ghz laptop

[daring holly]

BTW, you can shave off like 20-30 GB by compressing all PDB files using NTFS compression (if you are on Windows that is) via

compact /c /s:"C:\path\to\your\directory" *.pdb

[oblique pebble]

yes i am

[daring holly]

Ah gotcha

[oblique pebble]

thank you for that

how long does the compression usually take?

[daring holly]

Not long

[oblique pebble]

i have a 13th gen laptop with 32 gb ram

[daring holly]

Also if you have any other computers, I'd try setting up horde and UBA so you can do a distributed compile https://dev.epicgames.com/documentation/en-us/unreal-engine/horde-in-unreal-engine

[oblique pebble]

i dont have any atm

but when i do get a second one i will take a look at that guide

[daring holly]

Ah, I have 3 servers with Ryzen 5700Xs so that helps a lot (gives me 42 more cores with the way I have it configured)

[oblique pebble]

im a disabled unreal dev struggling on one income

[daring holly]

Ah

[oblique pebble]

rn im focusing my funds on getting an apartment

[daring holly]

Yeah, that's probally a higher priority

[oblique pebble]

i cant work anymore due to my ptsd anxiety and brain injury so its tough working at a job with these kinds of challenges.

[daring holly]

I just meant if you had any old desktops/laptops sitting arround you could use those

[oblique pebble]

however i did manage to get a work at home network optimization job

right i can get some of those once i get my own place. im in a shared living house atm for the time being

[daring holly]

Anyways, I gtg

[oblique pebble]

have a good one. thanks for the tips

[daring holly]

😉

[oblique pebble]

compression just finished. total size on disk for the folder is 133 gb O.O

[dusky compass]

org page opens fine
code browser https://github.com/EpicGames/UnrealEngine/tree/c3caf7b6bf12ae4c8e09b606f10a09776b4d1f38/Engine
works fine
The only thing that does not work is repo main page so this tells me they reached critical point somewhere in repo and one of the main page widgets overloaded and timeouts for the repo data/stats

[sage ivy]

I noticed that I'm not able to load my plugins from the Marketplace folder in my source build. If I put my plugins in Project/Plugins it works but but the same plugins in Engine/Plugins/Marketplace are not being found, any clue why? I tried a few things already to no avail.

[lament wasp]

just be careful, when debugging if you accidently type in a source file, it'll make you rebuild everything

[iron dome]

Tip: Make all the source files read only so, at least, your IDE will ask if you want to change that before saving/editing. (It should be safe to do this for all cpp/h files that aren't in an intermediate directory)

[lament wasp]

^ could this be pinned, knowing this tip would have saved me many hours <@&213101288538374145>

[lament wasp]

Hmm careful doing this tho. read only the wrong file, like i did, and nothing will build. more specific directions would be beneficial. read only corrupted something and i'm now rebuilding from scratch

[lament wasp]

which guide?

[iron dome]

Added with a bit of a guide on which files to do 😛

[lament wasp]

thx !!

[lament wasp]

i ended up setting engine/source/runtime and engine/source/editor to readonly

[gloomy kelp]

Anyone seen word on any forums/socials about it yet? o.O Have seen earlier posts just wondering if we've got official etas

[slate tapir]

Came here to ask this, was also speaking to a coder I know and he suggested trying https://github.com/EpicGames/UnrealEngine/releases

[thick furnace]

yeah, branches/tree/search work. as long as you dont open main page/issues/pulls

[dusky compass]

they are probably waiting on GH response

[smoky goblet]

Is there a way to search github commit messages? There is a fixed issue (UE-296837) with a CL (46591511) I would like to cherry pick, but when I search either of those it reports it can't find them in the source (which I guess I would expect).
Maybe this is related to the unicorn page, not sure. Haven't had to find a change this way before.

[thick furnace]

yes, but it works only for default branch (release) and only if commit message specified that.

better chance looking at file history / blame to find the commit

search does work if you open page directly

https://github.com/EpicGames/UnrealEngine/commits/ue5-main/Engine/Plugins/PCG/Source/PCG/Private/MeshSelectors/PCGMeshSelectorByAttribute.cpp

found 296837 https://github.com/EpicGames/UnrealEngine/commit/b920eaa3f920e9542b9e1e70e919c39c94b67a98

[smoky goblet]

Oh fantastic! Thanks so much!

[elfin badge]

https://tenor.com/5LZw.gif

[daring holly]

Got a response on the ticket

So GH knows, they are just taking 10 years to solve it

[void owl]

I have on good notice that Epic has notified them directly like 2-3 hours before this ticket got answered... because weekends and stuff + it seems like it seemingly works from US (at least partially) but outside-US pretty much doesn't.... so hopefully it won't take years for them to fix the stuff... from my experimenting only the "home" page of the project and PR threads are affected, the rest of the pages work just fine

[dusky compass]

they dont care much because everything else works it just gh cant render front page

which barely has any value

[hidden hedge]

@daring holly @gloomy kelp @slate tapir I've been told this is now fixed

[void owl]

and... I've got a note that all should be working

yeah

[hidden hedge]

Oh and @cosmic stump too

[cosmic stump]

yeah, I just checked - seems to be working

[gloomy kelp]

Legend thanks

[slate tapir]

So it is 🙂

[main cradle]

fatal error C1083: Cannot open include file: “AndroidRuntimeSettings.generated.h”: No such file or directory. So I'm trying to build platform as android in ue5.4.4 recently but I'm getting this errors. Didn't find much of the help yet!

[hidden hedge]

you are trying to build "development editor" for Android, which is not valid, use "development" which is a game target. furthermore, always use the output log for errors

though generally, you'd be building when you just package

you won't be directly running the editor on a mobile device

[main cradle]

Agreed. But i got errors while packing due to which I was trying and testing different options.

[hidden hedge]

well it isn't going to change much. packaging just runs UBT

so it's likely best to share your packaging results in #packaging or #mobile

[main cradle]

Also I'm getting same errors in development target as well.

[thin horizon]

been a few years since I've dealt with a source build, is it just me or is 5.6.1 a mess? First the corrupted nvtexturetools, then all the vulnerable nuget packages which warningaserror by default, and then UBA is just completely broken in 5.6.1.

Better off just taking UE5-main?

[thick furnace]

packages were marked vulnerable after release (as it is a 3rdparty tracker), and epic does not backport anything - it is all up to you.
also it makes zero effect on you as they used in engine tools and you don't use those libs in public environment

idk about nvtexturetools

[heady sparrow]

it's a fairly stable release as far as 5 goes

your IDE freaking out about an internal tool != unstable

[thin horizon]

it's some old libs that are corrupted in the ue github repo, they need to be replaced with fixed versions before you can get it into perforce.

[heady sparrow]

I just updated the deps files?

I have no idea if p4 changes how those work

what does "old libs that are corrupted in the ue github repo" mean? the setup?

github has been janky lately I suppose

[thin horizon]

2.0.6 nv texture tools library in the github repo is corrupted, they got botched in a merge a long time ago apparently. Perforce complains when you try to add them

[heady sparrow]

can you just re-obtain it normally?

[thin horizon]

you can get them from google code archive and replace them yourself, yes

basically, when I last worked with a source build years ago, it was pretty straightforward and no hassle. This 5.6.1 version has been a right PITA

from what I've read, UBA merge for 5.6.1 branch was botched, so you gotta disable it or cherry pick a fix

[heady sparrow]

UBA has worked fine for me for a long time now

are you using some more advanced part of it? I only use it locally and I know people using it with remote workers in their local network

[thin horizon]

The UBA source on 5.6.1 is broken : https://forums.unrealengine.com/t/unreal-5-6-1-compile-errors-in-unrealbuildaccelerator-uba-projects/2659416/3

[obsidian field]

Hi there!
Have you any recommendations about the vulnerabilities : Microsoft Build 17.11.4, Magick 14.8.1 and Bouncy Castle 1.8.6.7 ?
I can't find any official fix for these. I'm under 5.6

[heady sparrow]

change the deps to the new versions

voila

they are local only anyways afaik

I just changed these in the csproj files

[obsidian field]

Ok thx. I did that for the three vulnerabilities. No problem with Bouncy Castle, but:

• With Magick I get an error NU1902 when I want to build an Installed version of the Engine, so I can't make it
• With Microsoft.Build, I get errors in the console (engine open) due to lack of dependencies, and I can't package my project
  😢

I will probably do <WarningsNotAsErrors>$(WarningsNotAsErrors);NU1902</WarningsNotAsErrors> 😅

But, it's boring

[heady sparrow]

works for me but I haven't tried to create an installed build yet

[merry sun]

Could someone please tell me where UE loads the data for the 'project settings' window? I've bee looking in the repo, but without sucess

[smoky goblet]

You'll have to be more specific. It's not all in one place. You can even add your own by creating classes derived from UDeveloperSettings.

[merry sun]

You are right, I'm looking for Platforms/Android and Engine/Rendering... I'd like to see how they load some config

[astral elm]

Pick a config key and search for it in IDE?

[lunar prairie]

IIRC, everything in there are just inside a derived class of UDeveloperSettings.
With a very quick glance, there seems to be something specific for platforms (UPlatformSettings)

When I have created these, I just access them through the default object. Seems the most straightforward to me, you can see an example from the engine here:

{
    return GetDefault<URendererSettings>()->bClearCoatEnableSecondNormal != 0;
}```

Some other settings within Rendering seem to be accessed in some odd way via their associated cvars. I don't know why really.

[lunar prairie]

I'll actually answer to the msg so you get to see it 😅

[trim quarry]

I change all Magick version by 14.9.1, i doesn't have anymore this warning but i got this error :

unresolved external symbol "struct UE::ConcertSharedSlate::TReplicationColumnEntry<struct UE::ConcertSharedSlate::FObjectTreeRowContext> __cdecl UE::MultiUserClient::Replication::MultiStreamColumns::AssignedClientsColumn(class TSharedRef<class IConcertClient,1> const &,class TAttribute<class TSharedPtr<class UE::ConcertSharedSlate::IMultiReplicationStreamEditor,1> >,class UE::ConcertSharedSlate::IObjectHierarchyModel const &,class UE::MultiUserClient::Replication::FUnifiedClientView &,class UE::MultiUserClient::Replication::FMultiViewOptions &,int)" (?AssignedClientsColumn@MultiStreamColumns@Replication@MultiUserClient@UE@@YA?AU?$TReplicationColumnEntry@UFObjectTreeRowContext@ConcertSharedSlate@UE@@@ConcertSharedSlate@4@AEBV?$TSharedRef@VIConcertClient@@$00@@V?$TAttribute@V?$TSharedPtr@VIMultiReplicationStreamEditor@ConcertSharedSlate@UE@@$00@@@@AEBVIObjectHierarchyModel@64@AEAVFUnifiedClientView@234@AEAVFMultiViewOptions@234@H@Z) referenced in function "private: class TSharedRef<class SWidget,1> __cdecl UE::MultiUserClient::Replication::SMultiClientView::CreateEditorContent(class TSharedRef<class IConcertClient,1> const &,class UE::MultiUserClient::Replication::FMultiUserReplicationManager &)" (?CreateEditorContent@SMultiClientView@Replication@MultiUserClient@UE@@AEAA?AV?$TSharedRef@VSWidget@@$00@@AEBV?$TSharedRef@VIConcertClient@@$00@@AEAVFMultiUserReplicationManager@234@@Z)

[heady sparrow]

not all of them. But it's by far easier to use developer settings as it does the registration for you

[obsidian field]

I also changed to this version, but I don’t have this error 🫠
Yesterday I deleted Binaries, intermediate, derivate data cache (…) folders on the engine, then I downloaded binaries dependencies via Git, then I rebuilt the engine + regenerated the project files.
After that I updated the files for the 3 vulnerabilities (bouncy castle to 1.9.0, Magick to 14.9.1 and Microsoft Build to 17.11.48, no warns, few errors on automation build (in Rider), but I can compile + make installed build on the engine and package my game with no error.

[trim quarry]

I will try thanks

[agile steppe]

Hi! Do I need to apply this patch mentioned in the comments manually? Will a 5.6.2 version be released soon in order to avoid manual changes on my side?

I am currently working on a fork from 5.6.1 that I want to pin, and stop syncing updates from Epic and just focus on stability, performance, build size & speed and DX.

I have a few ideas here and there, is there anyone who messed with the engine source a bit and can chat with me a bit on some stuff free of charge?

I started small, for example, I wanted to get rid of that 6 files at root that handles setup and mimic the setup script similar to what rust has.

Invoked with:

./x setup
./x generate

Main issue:

When I build from source, it's always extremely slow + the produced build artifacts (binaries, intermediate etc) is huge, the whole engine is ~200GB if I build only the UE5 target with programs having pre-built binaries.

And if I built the whole solution from scratch, it's around ~300GB+ for Development Editor, where a lot of the artifacts are actually test junk and other stuff that IMHO shouldn't be part of Development Editor

[smoky goblet]

So you just don't take updates. There's nothing that will automatically push updates from Epic to your fork, you have to do that yourself. If you don't want updates, don't take them.
For the build times, building from source takes time and space. But only the first time. You can improve the time with better hardware (my laptop is pretty beefy and don't have a huge problem with the time when it happens) or more hardware (using something like Unreal Build Accelerator) to distribute the build to many machines. It can still take up a lot of space and the only solution there is bigger drives sadly.
Lastly, you're not really supposed to build the whole solution. You're supposed to build a project and it will build the minimum set of things that are dependencies. This will not include things like the tests.

[agile steppe]

It's not like this, if a certain version has vulnerabilities / broken build I would be inevitably forced to update. It's not like I have a choice there, because they won't separate versions per branch and then cherry pick security patches and stability fixes for an LTS, the whole branch moves forward together with new features and stuff, so I have to update the whole fork, or manually apply the fixes to my fork without auto syncing 😉

edit: Anyways, I am here to discuss the other issue related to DX when working with UE5+ and find people who would agree on this statements - "Throwing hardware to a software issue is not ideal" and "Given enough time we can make this thing run faster and be smaller in size and contribute back to UE5 for everyone to profit" and exchange ideas on the topic and how can we improve it.

I don't have a good machine, but waiting for 16 hours to build the whole solution is not OK, regardless of the hardware. 4 cores must be able to build this behemoth in a maximum of 6 hours, that's my envisioned estimate & target goal.

As for space, I just made a screenshot saying that Development Editor should not even build anything related to tests, that should be done under Test Editor. By doing so, we can save up to at least 50gb from what I initialy researched, and I believe we can save more if analyzed properly.

So yeah, guys who is on my wavelength related to the issue, DM me and let's form a chat to exchange ideas and how to solve this in a neat way. If any moderators are reading this, would be nice to create a separate chat engine-source-dx-refactor or engine-source-dx-initiative or smth like that. Maybe even bring in a dev from the epic team if there is any here.

[smoky goblet]

Yeah, 16 hours is a rough build time. But again, maybe you're building too much because you're building the wrong thing. You don't have to build everything. If you built just a project and not the solution, you'd build a lot less things (not just the tests).

My laptop does a clean build in an hour (but I only do that during engine upgrades). At work we'll get it done in 30-45 minutes, but again only after engine upgrades.

I don't know where you get the 4-cores & 6 hours estimate and some objective measure of anything. The engine is huge.
"Throwing hardware at the problem" is considered a reasonable solution because it's a professional tool for professional environments. While it's nice that Epic makes it available to everyone else it's the trade off you get for moving from the launcher build to a source build. We're a small independent studio and "throwing hardware at the problem" means we have two more machines that everyone can share to distribute work to. It doesn't mean clusters of super computers or anything. Or just buying additional hard-drives because the effort to try to make it smaller just isn't worth the time and effort when you can get 4TB for a couple hundred dollars.

Based on similar requests in the feedback channel, you're unlikely to get any traction on new chat channels for that sort of thing. If you want something like that you may have to start up your own discord server.

[dusky compass]

see pinned

[agile steppe]

Each UE version has its own requirements to the minimal set of plugins required to build and successfully run Editor/Game targets. You will have to experiment, because it constantly changes, but in general, here is minimal set for <=5.3 that works:

Isn't this a bit crazy if we think about it?

Plugins should be isolated pieces of code that extend the editor independently, yet the engine won't built without some of them present. At that point it's no longer a "plugin", but a core piece of the engine source

(Y) Agree/ (N) Disagree?

[astral elm]

The concept is still good, to try to encapsulate things as much as possible. The fact that the Core engine has evolved in a way that some Plugins have become essential, critical pieces doesn't mean that they Must be moved to Core imo

[agile steppe]

Well then move the plugin out of the Plugins and integrate into the core source. It diminishes the whole purpose of a plugin and adds ambiguity, in terms of you don't know what plugin would break the build if disabled/removed, and only through custom docs like the one pinned by trial and error it could be deduced properly.

It's an issue, that nobody wants to commit on a proper refactor due to dev costs.

[heady sparrow]

Looks like we have to update imagemagic again. I moved to 14.9 and all is well again
<PackageReference Include="Magick.NET-Q16-HDRI-AnyCPU" Version="14.9" />

(this isn't going to be a big security issue in practice as these are local only but it's just to make the warning go away)

[agile steppe]

I'll add this to my backlog

Essentially:

Engine
FeaturePacks
Plugins // <- Indepenent, isolated plugins that are downloaded out-of-the-box for the developer.
Samples
Templates
UE5.sln

[heady sparrow]

it is unreasonable to expect epic to check every combination of every plugin ever. The engine building together with plugins and being versioned alongside them removes a huge issue of plugins having their own random versions that you need to juggle

see: unity packages being a fiesta of random versions (although way better than not having source-available packages)

[dusky compass]

in the context of the Editor, yes, some functionality is offloaded to plugins so in a sense a few of them are required because some core modules require them

the advantage is that they are not part of the core codebase so that already is good enough

helps on build time and code iterations

[heady sparrow]

I just disable all engine plugins by default and I only had to enable like a half dozen or so

pretty good all things considered

[smoky goblet]

Just because they're isolated doesn't mean that they can't also be essential.
That's like after building a game thinking that you could disable any of the plugins you used to make it and expect it to continuing working.
The plugin/module structure provides other benefits. They're not meant to provide a way to strip the solution down to bare bones.

[heady sparrow]

Epic HAS moved plugins to be core engine modules in recent years if that helps. Mass used to be a plugin along with Structutils

[dusky compass]

When I was looking at all these dependencies back then there were some odd things tho like IrisCore was an odd hard req for some 5.x versions (dont recall which i think 5.1/5.2), but these were rectified later
all in all i dont think anyone from epic core engineering team actually goes hrough this so it has to be PR that tidies this up but it most likely wont be accepted as being potentially too disruptive to the established ecosystem

[heady sparrow]

Iris has a stub module that exists just to make it compile when its not on

iirc

it's far too important to just be plug and play from a code perspective

it has to make changes to the core replication ticking/dirtying flow

[dusky compass]

but, if you really want, you can build some extremely bare bone editor if you trace all module -> plugins dependencies and remove non-critical modules; it wont be much, but doable.
Questionable though, why would you need such editor, I guess there could be very specific case to edit/audit only specific type of assets with limited functionality for the rest of features

[heady sparrow]

"DisableEnginePluginsByDefault": true, in the uproject

[dusky compass]

RigVM too IIRC
I think EI and Mover are next

[heady sparrow]

VisualStudioSourceCodeAccess is mandatory as well (even if you dont use vs as an ide)

a lot of misc things you don't really need but are kinda annoying to go without like PluginBrowser

[agile steppe]

There are 4 more issues I think in the current structure

1. The binaries/artifacts are all spread inside Engine directory. Making the cleanup in case it's needed a huge pain in the butt, as you have to keep track of every single binary generated by programs/engine/thirdparties keep the directories recorded somewhere, update .gitignore and also clean if you want to do a build from scratch. Instead I want to somehow group all of the generated/binary/artifact data from any level at root, into:

Build // <- All generated data, binary data, artifacts, etc
  Windows
    ThirdParty
    Intermediate
    Saved
  Linux
  UE5.sln
Engine
FeaturePacks
Plugins 
Samples
Templates
UE5.sln

So a simple rm Build or rm Dist would do.

2. The test projects are literally everywhere. The same, move them all in one place at root

...
Tests
  AutoRTFMTests
  UnrealBuildTool.Tests
  ...
...

3. The content binary data *.uassets are in so many places. This leads to a HUGE problem, you can't really programatically analyze and understand exactly what engine content data your level is using, ending up with issues such as huge binary files for small indie games, and manually configured whitelists/blacklists of data in configs, which is a bummer and not DX friendly, not really a scalable solution. And downloading data separately from an SVN via a script is meh. Why not git submodules or smth like this for Samples, Templates at least...

Content
   Core // Moved from Engine/Content
   Samples
   Templates
   FeaturePacks

That way Engine directory would contain purely source code

4. Third party code being part of the Engine/Source/ThirdParty directory, adds ambiguity, because it's unclear which third party code is modified to what extent compared to the original library sources and if you want to check you have to cross reference a certain version with the original source, or even more than that, check each file against the original library source file code to make sure it's unchanged.

The biggest issue here is when it comes to updating libraries due to deprecation, third party code optimizations, security updates, it will be much easier to upgrade.

So here the proposal again, move all ThirdParty directory to the root, and make sure it's only either a git submodule specifically, meaning it was 100% unchanged, through a package manager like nuget, conan and if an extension of the original library is needed, then create a wrapper for it inside the existing Engine/Source/ThirdParty but at least now we know exactly which libraries was extended/modified by Epic.

[dusky compass]

https://github.com/EpicGames/UnrealEngine/pulls
best of luck

[agile steppe]

Yeah, I will, but first I need to pull it off no?:)) For now it's local experiments/ideas

So, given I WANT and I BELIEVE this changes would make a huge diff as a first milestone into making the builds quicker/lighter/easier to cleanup, manage and upgrade, from all this 4-5 changes I proposed what do you think logically should be the correct order to develop as there are quire some entangled code in the current sources? I head butted myself a few weekends now and formed some ideas, but if likeminded people would go through this channel, read this proposals and want to help out, DM me with your ideas on this, or write it down here, I'll take a 1-2 weeks break from this and will restart after I have some more input from other people.

It's a massive task, I know, but still, for now assuming I can pull it off, (no), where should I start first and so on...

My idea for the order of development is

1. [2] Tests
2. [4] Third Parties
3. [1] Binaries
4. [3] Content

Ok, cya around...I hope I was not too annoying 🤐
🫵 If you like these ideas to be implemented or see value in them and got skillz, DM me, maybe we can pull this off together.

[main cradle]

So I want to use 4.27 and 5.6. For two projects and I don't have much space to build the 2 engine. How can I switch between engine which I have cloned from GitHub? And don't need to build them all the time whenever I switch! Also I am trying the same thing in Asustor Nas but it makes it very slow for rendering packages even though I have 4 SSDs of 1 TB and 64 GB RAM! So maybe I can install two different versions at the same time and build them but main issues is shaders compile and packaging. It make overall setup very slow and laggy with constant usage.

[astral elm]

You just need to have space for them, there is no magic to work around that. Engine size can be optimized somewhat though ( there should be tips here if you search )

[dusky compass]

Just install launcher 4.27, it is 12gb just editor

[thick furnace]

you don't operate on filesystem so your "rm Build" are problem, you use project build system. bypassing project build system is akin to manually invoking cl.exe on each file, it is dumb.

epic does not use git, they use perforce, perforce has no submodules.

thirdparty is a source, so it is part of source, same as thirdparty stuff part in pluginname/source/thirdparty
tests spread around because some are engine tests, some are plugin tests that have to be part of plugin, program tests etc

[thick furnace]

yeah, slimmed down launcher build with no content examples/templates, pdb, just windows platform. just source present will be small enough.
but pdb presence is preferred if you ever need to debug it

[agile steppe]

1. Thank you, Nice! I missed that they use perforce. I'll keep my fork compliant with this core requirement. But they use git for their public repository still.
2. I disagree that current setup for a clean build is better than just having every artifact under Build , instead of an rm -rf Build and ./Setup you can do git clean -fdx & ./Setup the only difference is if any new ThirdParty integrates you have to add it's binaries to the perforce for download/setup the CI/CD pipeline to build that heavy deps and lastly download them using GitDependencies.exe but most importantly make sure to keep .gitignore working correctly and ignoring only correct things, which is the most annoying part and error prone. By strictly limiting Engine directory to be ONLY for source code it's easier to manage the whole thing, and rules in .gitignore would become orders of magnitute easier, and any subsequent changes wouldn't be necessary.
3. About thirdparty dir/plugin and so on, I'll try to make it in the fork in hopes it actually would simplify, speed-up things.

Do you think only @main cradle has issues with storage? I have 2TB it's tuff and it's constantly not enough. ~250+ GB is occupied by the full build of the engine + very basic assets. The fact that the engine is professional does not mean it can't be slightly trimmed.

For example, I would want to run something like ./x setup --target-only Windows_x64 --dev-only=VS --content=all|<...>|blank and have a optimizations at every step of the way:

• Downloading
• Solution project setup
• Plugins pre-installed
• Content fetching
• Building / Targets / Binaries
• Runtime

So I could end up with a tiny version of the engine specifically pre-configured for developing with Visual Studio only, and just for Windows_x64 PC.

Right now there is similar way by providing some -exclude Android etc, but it's limited and applies only for download step / setup step.

For example, I really would not care less about 12>[1107/7947] Compile [x64] Module.AugmentedReality.cpp and why the hell it's being build. I just don't need that, and I can't opt-out and not build it. Which is sad.

Ofc, there are people who do, for them a default setup, would provide each and every module out-of-the-box.

[thick furnace]

they use GitDependencies only to bypass usage of Git LFS by github (since it is not Epic who own Github but Microsoft) money to store terabytes of binary assets will be massive. Note that GitLFS appeared much later than UE was mirrored to github

[agile steppe]

Yeah I assumed it may be the case since it's only used mainly for static content, like pre-built .dlls like for CEF for example and .uassets etc

It really would be crazy to build all third parties from source tooo...

or would it be...

CEF optimized from scratch without tests is built in..3 hours or so...

Yeah I'm not that qualified to go deep in the rabbit hole, I am not even 100% sure I can actually deliver what I yap here about.

But..

I try to suppress fear and anxiety.

My main issue is that I'm broke and generally poor. And I can't afford a new PC in the near term, or storage even. xD So I have to try and optimize it. As I want / have most experience in UE

[agile steppe]

Ok and shaders? I do NOT believe, I need to pre-compile 15k shaders to launch a BLANK project containing a plane, a cube and a simple skybox without clouds. I'll try to fix this thing up in my fork aswell, this is insane.

[heady sparrow]

blank project = default settings which don't turn off many shader permutations

etc

[agile steppe]

Well it means that the defaults stink then.

Thanks for the tip!

[heady sparrow]

this depends on the project

[dusky compass]

isnt DDC supposed to help with that, I think you can build default engine ddc to speed it up

[agile steppe]

I think defaults has to be corrected a bit, any of this options that would slowdown the launch has to be split better.

Right now there is Maximum and Scalable is not enough to set all the options according to the desired user choice for the project, I think it should have something like, Bleeding-edge Maximum Medium Scalable Low-end, where Bleeding-edge only may have any experimental plugins, Maximum should have only stable, battle tested plugins or other deps in there. They rely on experimental feature in their releases too much.

Also there is no way in the generator to provide the platforms, and the RHI options by default (All , DirectX, Vulkan, Metal) .

Not everyone develops stuff for Mac or I maybe don't want to do it in DirectX and target Win/Linux only. So maybe something like a multi-select target platform picker as well, All, Desktop, Mobile, or granular picks Windows, Linux, MacOS, Android, iOS etc

[heady sparrow]

you can just change the ini manually

yeah the startup options are pretty sparse but

idk what else they would put there

[agile steppe]

Wait, I'm just pointing to some flaws, not attacking the engine devs, or saying it's all shite. Don't need to be that defensive, better point similar issues too, so I can add them in my backlog, revise, connect and start improving and fixing it. Who knows maybe some things would get accepted into the main UE5 branch. Like a better project startup picker, with all this flexible options there. etc.

I am very very serious about this 😉

[heady sparrow]

I will meditate on startup options

I do actually think they should have a LITTLE bit more though for sure... a choice of raytracing or no makes sense at least but they should probably add stuff like static lighting vs no static lighting

and platforms would make perfect sense too

not that I think it does much to exclude them project-start wise after you have the engine itself built but it might save some pointless plugins

[agile steppe]

Oh nice point. Like if your game does not even need raytracing why waste CPU cycles compiling unrelevant code.

[heady sparrow]

the raytracing setting is a choice when making a new project already (Unless its missing there, not sure)

[agile steppe]

So not only RHI options but also Lightning Model or smth

[steep shuttle]

Can someone help me with this engine crash. UE5.6 source based. As soon as I pressed " Refresh Platform Status " engine is crashing. What's the reason behing ?

Thanks in advance

[dusky compass]

threading issue, you'd have to debug to see what causes it

[steep shuttle]

How can I do that with " Refresh Platform Status " ?? inside editor or VS IDE

[hidden hedge]

launch the editor from VS (using the green play button), when it crashes/ensures, it's break and it'll show you what the callstack is

as long as you have debug symbols, but since you're in #engine-source , you should

though here, I'm suspecting it'll failed to run whatever child process it needed to grab the android sdk status, but the callstack should tell you

[thorny wolf]

I built NvRTX Branch and ran into this issue. I use a non NVIDIA. Any ideas?

[merry sun]

It help me a lot, thanks!

[steep shuttle]

Can some Pro's help me based on this call stack

And UE Log states

[cinder trench]

same here

you fixed it?

[steep shuttle]

Didn't find any solution yet

[cinder trench]

I've been trying to solve this since yesterday and so far nothing. There is simply no solution.

I have already completely reinstalled Visual Studio, and nothing has changed.

I also completely reinstalled the source three times, and nothing changed.

Honestly, I'm almost going to the 5.7 preview source code just to see if it stops giving errors

[steep shuttle]

Still same there according forums. Although Good luck. Give it a shot

[cinder trench]

Really? I won't even try then 🙁

[steep shuttle]

I am running out of space with 4 UE versions including source ones to give it a try 😅

[cinder trench]

If you find a solution, please remember me and let me know if you managed to solve it, this is so frustrating

[cinder trench]

Wow

haha

[steep shuttle]

Sure. Hoping same

[cinder trench]

Thank you 🙂

did you try this: https://forums.unrealengine.com/t/turnkey-fails-to-verifysdk/2642592/2

[hidden hedge]

generally I'd be more looking to supress the warning rather than upgrading the package

well are you making an installed build?

[cinder trench]

I'm using the source code

[hidden hedge]

then that doesn't apply

[cinder trench]

I know, I'm just dying to solve this. Any solution anyone can suggest, I'll be trying haha.

[hidden hedge]

I would have the engine be as pristine as possible and try and disable the vulnerable package warning instead. A handy tip is also to use a native build so you don't compile literally the entire engine

I see in main all the packages were updated in a batch https://github.com/EpicGames/UnrealEngine/commit/83e67c23f9001612337019783f5dafd3152b002a

[cinder trench]

I've tried that too.

[steep shuttle]

Me too tried this from binary version

[hidden hedge]

from the earlier log, it looks like you package from the editor too. do you get the same via BuildCookRun?

[cinder trench]

Yeah

[hidden hedge]

then I would suggest sharing the log from that rather than the noisy in comparison in-editor run

when you upgraded these packages, did you actually build UAT and Turnkey.Automation?

[cinder trench]

I just rebuild the UE5 project itself

[hidden hedge]

that doesn't include the .NET programs

also building "UE5" is wasteful since it builds literally everything

that is, every native part of the engine (engine modules, plugins)

[cinder trench]

Hold on, I'll try that.

[steep shuttle]

Something weird happened I haven't changed Magick version I simply deleted source folder and verified engine from launcher and boom package is success and NO death scare " SDK NOT setup window " too

Anyhow I need to try source version. Thanks @hidden hedge for your time and effort for the community

One important note @cinder trench delete temp folders from project

[cinder trench]

You're not using the source code, are you?

[cinder trench]

I tried it on new projects and it still didn't work :(, I'm trying to do what sswires told me to do.

[steep shuttle]

Now I have to work on that. Flushed Source and I will redo the build according to sswires guide

[cinder trench]

My problem is a little different from yours, because the Launcher version works correctly in my case, only the source version is causing problems

[cinder trench]

Okay! I managed to get the Unreal Source Code packaging to work! That's exactly what you need to do to fix it: update magick and recompile the automation tools! Thank you very much @hidden hedge for your help!

@steep shuttle

[dry sail]

With NumCustomPrimitiveDataFloat4s = 9 and DataStrideInFloat4s = 32 (because BATCHED_PRIMITIVE_DATA_STRIDE_FLOAT4 = 512u/16u, this loop of FBatchedPrimitiveShaderData in GPUScene.cpp is only looping over 8 out of the 9 CustomPrimitiveData float4s (if StaticLighting is allowed).

// i == 24
// int32 NumCustomData = FMath::Min<int32>(FCustomPrimitiveData::NumCustomPrimitiveDataFloat4s, DataStrideInFloat4s - i);
// int32 NumCustomData = FMath::Min<int32>(                                                  9,                 32 - 24);
// int32 NumCustomData = 8;
for (int32 DataIndex = 0; DataIndex < NumCustomData; ++DataIndex)
{
    Data[i + DataIndex] = PrimitiveUniformShaderParameters.CustomPrimitiveData[DataIndex];
}

https://github.com/EpicGames/UnrealEngine/blob/release/Engine/Source/Runtime/Renderer/Private/GPUScene.cpp#L2570

If StaticLighting is allowed, doesn't that mean I can effectively and securely only use 8 CustomPrimitiveData float4s instead of the 9 that are typically communicated, because this code path of BatchedPrimitiveShaderData exists?

[vital magnet]

Heyo, people, all good?
I'm trying to build an specific version of UE5.4 from source, in order to mod a game. But I haven't been able. I believe this maybe related to this error, but I can't be sure, google didn't help either. Did you guys know what may be happening here?

This is the full output if anyone is interested

[hidden hedge]

I can tell right away you don't have the correct build tools for the version of the engine you're compiling

5.4 is likely going to be 14.38

but this looks like this is for unauthorised modding, which is against the server rules

[vital magnet]

Sorry

The rule wasn't clear on this one, "Discussing tools for PC mods is OK if they're permitted by the game's creators", while Obsidian never directly supported modding tools, they have been supportive of mods in the past (https://www.nexusmods.com/bloobsadventureidle/news/11354), but please correct me if there's any new information I missed out.

[vital magnet]

Thanks, 14.38 is installed, but I think I had garbage in my build data, I set visual studio to rebuild the files and I'm waiting now.

[dusky compass]

That rule is not applicable to and does not concern UE itself, it literally talks about tools.
Does not matter what you use UE for as long as it is within TOS/EULA

[hidden hedge]

it is applicable as it's a server rule

[vital magnet]

I mean that's alright, I think the question doesn't violated it, but let's leave the moderation to the moderators, we all are here to learn.

[vital magnet]

Still waiting between, didn't realize it took so long to compile the engine xD
Well, hope the wait is a good sign

[dusky compass]

it has already been discussed with moderators and in this very channel and modding discussion is not against the rules
regardless, your question is not related to modding

[languid sonnet]

hey, if anyone have experience need advice on the topic how to actually get visible sdk for packagin project. (clean 2025H2, VS community 17.14.19
https://forums.unrealengine.com/t/ue-5-6-1-source-cant-package-projects/2673440

[hidden hedge]

you did not build any of the automation projects

[languid sonnet]

how to force that actually? Did not had that problems before with any version of the engine

[hidden hedge]

well the log shows that they fail to build because a warning as error is there due to a vulnerable package version being used

so you'll have to manually upgrade the package or suppress the warning

[languid sonnet]

did that installed newest nugets in first try now its my second reinstallment of os (used 14.19 versions)

[languid sonnet]

https://youtu.be/yK3uBsbV4Bk

[hidden hedge]

I'm not sure why you're giving a random tutorial

[languid sonnet]

from 14:40 its mine ive updated that packages

[hidden hedge]

clearly not from your log

[languid sonnet]

yes but redoing that not fix the issue that sdk is not visible

[hidden hedge]

well share a log from that

[languid sonnet]

okay need now to recover backup and update that log

[hidden hedge]

?

[languid sonnet]

nugets errors now dissapear cause ive tried to remove net8 from VS

to see if with 6 only it will help

https://forums.unrealengine.com/t/visual-studio-not-compiling-the-project/2657971/5

[hidden hedge]

I'm not sure why you're not doing what was suggested through suppressing these errors, disabling warnings as errors, or upgrading the packages

that is the path forward and not anything else

[languid sonnet]

how i can disable those errors?

back due the ssd magic

now upgrading and will deliver the log

[languid sonnet]

want log from completed from magicQ or install that packages too?

Worked without that Microsoft build packages...

will try to install them and see if that happens

[languid sonnet]

YOu are an Angel with maximal luck - spent 2 days trying to fix

thank you just for response

[dusky compass]

dont other to restore you can septn weeks trying to make it work, just set to ignore errors

[languid sonnet]

where i can do that never did that setup? Where i can set to skip those . Ive learned something new if i mess up that in futture i will have more understadning how i can fight with that

[languid sonnet]

yep for sure updating those Microsftbuild packages files ends with that

...

[hidden hedge]

you have to set that up yourself by editing the affected csproj

https://learn.microsoft.com/en-us/nuget/reference/errors-and-warnings/nu1901-nu1904
either through the <WarningsNotAsErrors> to downgrade them back to warnings, or disabling <TreatWarningsAsErrors>

[languid sonnet]

disabling them generating error and editor wont launch - there mus be some tricky setup - proper guide need to be done on that topic

[hidden hedge]

This is just a find and replace on csproj files, because all the automation ones have it set to true

That's the guide

You would need to share errors you're seeing

[languid sonnet]

you mean that to false?

disabling global in VS setting wont allow me to run even as example engine

[hidden hedge]

Yes and for all instances across all csprojs

And if it won't allow you to run the editor, you'll need to show what you see

[dusky compass]

    <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
    <WarningsNotAsErrors>NU1901,NU1902,NU1903,NU1904</WarningsNotAsErrors>

in every single one csproj, you can write a simple script for that

[hidden hedge]

you would need one or the other, but yeah

<TreatWarningsAsErrors> being true is what made those errors rather than warnings in the first place

[languid sonnet]

for now i made workaround for current VS release and nuget packages cause there are alot of files to overwrite already

https://www.youtube.com/watch?v=dwMmF3lxfGE

[civic cargo]

hey people so ive been having a issue for a while now with rider and well for some reason every file that I open is all just red, no code completion no type hinting no nothing, shit pisses me off mad since I'm basically working blind and rely on recompiling engine to find any issues and maybe idk someone had the same issue and knows a fix

[astral elm]

I seem to recall seeing it last week. Invalidate caches and restart maybe cleared it up

[worn brook]

anyone else's "Package Game" option in 5.7 branch build grayed out?

seems to package fine through runuat.bat so maybe a ui issue

[civic cargo]

already did that like 20 times

been happening to me for months

[real charm]

is there an AI-Free IDE available that works with UE????
I want an IDE without AI

I tried old version of Visual Studio 2022 Community 17.6.0 but I get Visual Studio 2022 x64 must be installed in order to build this target.
I later found out I need 17.8 or later, 17.10 recommended (Default)

I wont explain the reason because we will go out of the scope, I just want an AI-free IDE

About Rider and Visual studio
I spoke with Rider and asked if there was any Open-AI-related code within the app even if I choose to opt-out of AI, and they said there's some code integerated in the main app beside the optional AI feature,
so you will have code running collecting god-knows what it is doing by using rider even if you wont install their AI feature!!!

Microsoft co-pilot is based on OpenAI Third party tools(SO microsoft is not the one who developed the app)
Think of it like this a Third party tool is like a game engine and co-pilot is like a UE-Game and I know more about microsoft

[calm mason]

Install Visual Studio community latest version.
Modify the components to include the toolchain required by your engine version: https://dev.epicgames.com/documentation/en-us/unreal-engine/setting-up-visual-studio-development-environment-for-cplusplus-projects-in-unreal-engine#version-compatibility

I.e. for 5.6 you need MSVC 14.38.33130

I don't think it comes with AI, whatever that means, and if it does according to your definition, I'm sure you can disable it.

[hidden hedge]

Rider only collects AI data by default on the non-commercial version, but you can opt-out (but it's shitty that it is opt-out)

[worn brook]

lol i'm a dummy, I had to look at the source code to figure out you have to select the platform first before the package project button becomes clickable

[hoary crest]

Has anyone successfully added options to material editor?

[real charm]

from my insider source OpenAI they bypass(with their cooperation) microsoft, google and they collect data on their own, so i am afraid the only opt-out is not to install any tool that uses their third party tool, so i am moving to linux 😛

[languid sonnet]

You can disable copilot in VS

they fixed CPU usage all the time yesterday for VS2026 btw predicts code from repositories like Rider but its free atm - this is cool feature. Also it helps for c++ beginners when stuck.

there is no point reinwenting the wheel. Better to build something cool instead spending days to look for solution.

Epic should create some tool that automatically convert everything bp after packaging to c++ under the hood.

for now iam learning that c++ cause i have too - cause use some plugins which doesnt work i would like. so there is need to expand functions etc.

beter to focus maybe on optimizing something in the code where its struggles 🙂

[next yarrow]

Is there anyone in here that is well versed in building projects through game sync? I have been having issues getting my project to build for the past week. It gets close each time but gets caught up on the plugins. no one else on my team has had any issues with it though.

[hidden hedge]

there isn't any trick to it, it just runs UBT like your IDE would. are there any specific errors you're seeing?

[next yarrow]

Yeah it’s weird. Our team normally pulls from perforce and build through game sync but when I tried it I hit an error where the windows sdk 10.0.26100 would cause my pc to have compiling errors so we switched just my pc to use an older version and that one got through all the cpps except the plugins. We’ve never had issues with our plugins before but they are throwing errors and failing the compile. @hidden hedge it’s been a long going process but I’m right down to the last 10 cpps and failing it’s driving me nuts.

[hidden hedge]

you should have the Windows SDK and MSVC toolchain that matches your engine release installed at a bare minimum

but it's hard to know without being privy to the exact errors you're seeing

[next yarrow]

Yeah I can put errors on a notepad and send them to you.

bt> Using Visual Studio 2022 14.36.32548 toolchain (C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.36.32532) and Windows 10.0.19041.0 SDK (C:\Program Files (x86)\Windows Kits\10).

Current build settings for UE 5.3.1

[hidden hedge]

Looking at the release notes for 5.3 (damn that release is pretty long in the tooth), the MSVC toolchain version is listed at 14.34

actually nvm, contradictory info

the release notes say 14.36

[next yarrow]

lol

[hidden hedge]

I think the only thing to see is the errors

And does it compile successfully from the IDE? what configuration do you use there? does it match?

UGS will typically default to DebugGame, but opening an .sln unchanged will usually be Development

[next yarrow]

UGS is using Development

Let me get the errors. I tried modifing somethings so I want to get you the original errors I had one sec

Heres what I copied from the log before I modifed files to get past the Chaos car bug

[quick crystal]

When I'm using VS 2026, why do my projects say (Visual Studio 2022) as a suffix?

[lunar prairie]

Hey folks, I just noticed this inconsistency and I don't really know if my PR is any good.
According to 'Contributing to Unreal Engine' page, PRs should be done from release.
But in 'Unreal Engine's README' is says they should be done from ue5-main.

So which one is it? Is this PR fine as is or do I need to move it someplace else?
Not many comments from UE folk, so I dont really know if this is good or not.

[smoky goblet]

For best results/response, PRs should be done from ue5-main.

[lunar prairie]

I'm not super knowledgable on git, how would I re-target my branch onto ue5-main? I know I can change the PRs target branch, but if I do that, it says there are thousands of modifications (likely because the actual code still is based on release).

[brave zealot]

Hello. Do any of you know how much engine source code can be included in a marketplace plugin if any. There are some private function in the engine source code that I would need to access. Thanks in advance!

[lunar prairie]

No engine changes can be part of a plugin sadly

[brave zealot]

Thanks for the answer. So if I understand correctly, even if I leave the code as is with thier copyrihgt, I cannot include it at all, no files?

[lunar prairie]

If you need to change something, that won't work. Plugins are loaded "next to" the main engine, in a separate folder altogether. So all your code will be accsible. However, if you have to change engine code that won't be included in a plugin.

You are free to modify engine code in your own project and you can have a plugin that accesses that modified engine code. But if you want to share it, the engine code must be part of the engine proper.

[brave zealot]

No, I do not want to change the engine code at all. Its just that I have some logic in my plugin that needs engine code that is private. Eg: I am making a custom bloom system, but need exposure logic for it to work, that is private. So I add the exposure engine code file to my plugin. I want to know if that is legally allowed, because I know that substancial use of epic games code is banned.

[lunar prairie]

Oh, so you essentially duplicated that code inside your plugin?

[brave zealot]

Yes, that is what I want to do. I would only distribute on FAB.

[lunar prairie]

Tbh, it is quite a grey area. I'd read the UELA on UE and the agreement on FAB too. I can't say for certain :/

[brave zealot]

They have "Substantial portions of sample content or source code from Epic Games is used for display/example only. " written on the agreement. But I have no idea how much "Substantial portions" is. 50% or 30% etc

[lunar prairie]

I thnk that is quite intentionally vague, essentially a: did you have to copy a couple of functions or a whole system?
If its the latter, then you probably can't.
Also of note: It separates cocnerns if that code is or isn't integral to your feature, which in your case it is

[brave zealot]

Okay. Big thanks. Haha, now I understand why there are so few plugin that actually add or change something big in the engine

[obsidian steeple]

Anyone familiar with using Deadline?
Total novice. I’ve configured the plugin.
But 90% of my job submissions fail!
How do you troubleshoot?
There doesn’t seem to be any useful feedback when things go wrong.
I need to submit multi layer EXRs with ObjectIds.
Any tips appreciated!!

[iron dome]

That doesn't really seem #engine-source related.

[charred umbra]

Hi, i have a build from source and i want to install Eletronic Nodes plugin on this engine version, how can i do this? (i already have the plugin)

[dusky compass]

same as any other project plugin

[charred umbra]

i found this

bc the engine source doesn't appear on versions to install

[smoky goblet]

Yeah, marketplace support for source builds is weak.
Our usual solution is to install them to a vanilla engine install and then just cut/paste them into where they should really live for our source build projects.
There's some sort of FAB plugin, but I haven't messed with it yet to know if it improves any of this.

[charred umbra]

that's exactly what i'm doing, but i raise one question... the Eletronic Nodes plugin is Editor-Only, does my team need to install it on their source builds too?

[dusky compass]

IIRC you no longer need binary version of engine, EGS has option to downlaod it now

[charred umbra]

rlly? where do i find this?

[smoky goblet]

If they want to use it. Or you include it in your source control along with any other plugins. It doesn't matter that it's editor only.

[small surge]

Has anybody managed to get antialiasing working on mobile in 5.4? I have been told it is broken on the branch and I cannot upgrade cuz I am mid production with a custom branch.

5.5 seems to have it working.

[quick crystal]

I set the compiler version to 2026, regenerated project files, and it still says (2022) next to my project name

What gives?

[heady sparrow]

probably just the file association?

[dusky compass]

compiler version and project version are orthogonal to each other

in general VS can open older projects just fine

[quick crystal]

It bothers my OCD that it says 2022. It also makes me think that the setting didn't hold

Because otherwise it shouldn't have a suffix like thjat

*that

[thick furnace]

are you mistaking "project file version" ? there was a fix for project generation for vs2026 in ue5-main few days ago

also not sure about the new vs2026 slnx format

[quick crystal]

Ok ill take a look at ue5-main

[quick crystal]

So I have made the same changes as can be found in that VS2026 commit

I am guessing I build the project again, then I can re-generate project files, then re-compile once again?

I haven't made a change like this to the engine's build program source before; only runtime module (C++ changes). I'm guessing though building the project will automatically cause the unreal build tool project to rebuild. Maybe I should have just re-built that project instead

You know what, let me just do that

Hm... well, now when I try to use the uproject file to re-generate files, nothing seems to happen (dialog doesn't show up)

[astral elm]

can try regen from commandline
"%UNREAL_ENGINE%\Engine\Binaries\DotNET\UnrealBuildTool\UnrealBuildTool.exe" -ProjectFiles -UsePrecompiled -Game "%MYGAME%\mygame.uproject"

[shadow thorn]

I noticed that if a lot of AIs are following the player (600 right now for testing), NavigationData becomes very heavy during repath. Would it be better to do repath using MassEntity? I can do this so you can add it to the next engine version? 5.7.1, for example. This problem is 100% due to the fact that Repath is called in the game thread via TickActor and everything is called at once

void ANavigationData::TickActor(float DeltaTime, enum ELevelTick TickType, FActorTickFunction& ThisTickFunction)
{
    Super::TickActor(DeltaTime, TickType, ThisTickFunction);

    PurgeUnusedPaths();

With a refresh rate of 0.5 (the default), you'll experience FPS drops very frequently. Therefore, I think this is critical and needs to be fixed. With the Mass system, you can split the path updates individually for each AI, which will eliminate this problem.

Also in ANavigationData::TickActor - Only FindPath is called, but there should be a check, because there is also FindHierarchicalPath

//row 384
FPathFindingQuery Query(PinnedPath.ToSharedRef());
const FPathFindingResult Result = FindPath(Query.NavAgentProperties, Query.SetPathInstanceToUpdate(PinnedPath));

[tulip narwhal]

Is there a way to build the engine without taking 500GB? I wanted to mess with the 5.7 source code but I have a 5.6 build that I have to keep for work

[smoky goblet]

You can strip the extra directories parallel to Engine if you want. Ultimately it kinda depends on how many platforms you build. My engine source directory is only 175 GBs

[tulip narwhal]

I'm not sure which directories you mean. The ones that are parallel to UnrealEngine/Engine/ are simply "Samples" and "Templates", which take up only about 800MB each

Looking at windirstat, looks like most of the space is taken by Engine/Intermediate after building, and Engine/Plugins, but I'm not sure if it's safe to delete Intermediate

[smoky goblet]

Yeah, those are the ones I meant. I wasn't sure since I always delete everything but Lyra.
It should be safe to delete intermediate (they're not anything that get checked into source control, so you have to be able to start a build without them), but they're just going to come back the next time you build. But that's where what you build plays a role. each configuration will generate some different intermediates and binaries. Things like the generated.h or .gen.cpp's are shared though.

[tulip narwhal]

I might have built the whole solution instead of the UE5 project... I don't remember tbh

I'll try to do 5.7 and see what happens

thanks for the advice

[smoky goblet]

Yeah that could definitely make a difference

[astral elm]

Engine won't run if you delete Intermediate after building it - you will have to build again ( i think? )

[dusky compass]

@tulip narwhal pinned

[astral elm]

Any tips for locating a specific CL in unreal source github?
I know it's there in 5.7 according to release notes...
Added catching of UnsatisfiedLinkError in GameApplication.LoadLibraries
EDIT : ok, searching with "UnsatisfiedLinkError" yields several file hits, now I look at those, and Blame... Still, it would be nice if there were a Better Way to actually search the CL descriptions, not file contents...

[void owl]

I usually sync locally and search using git log... github kinda sucks for pretty much anything other than copying download link 😄

git log --all -i --grep="{search term here}" (it does case insensitive grep through commit messages for all branches you have fetched metadata for)

and if you need to search through content then it's git grep but I've hardly ever used it so I don't have specific syntax for you

[astral elm]

super thanks for the tip!

[heady sparrow]

github search suuucks but going by the folder can help narrow it down a bit... I tend to just check folders of things I am interested in

[quick crystal]

Doing it that way worked, so thank you!

[floral shale]

hi

[brave turtle]

Hey guys,
i'm trying to rebuild one of the engine's Plugin, but there are other modules that depend on it and they do not allow me to rebuild the plugin.
I had to temporarely remove these 2 plugins from the Marketplace folder so I could rebuild using RunUAT.bat from BatchFiles in Engine.

Does it mean that fix for that in general in long run would be copying all these 3 plugins to my project's Plugins? Would it fix that module dependency issue?

Module 'AsepriteImporter' (Marketplace) should not reference module 'Paper2D' (Plugin). Hierarchy is Plugin -> Project -> Marketplace -> Engine Programs -> Engine Plugins -> Engine.
Module 'AsepriteImporter' (Marketplace) should not reference module 'Paper2DEditor' (Plugin). Hierarchy is Plugin -> Project -> Marketplace -> Engine Programs -> Engine Plugins -> Engine.
Module 'PaperZD' (Marketplace) should not reference module 'Paper2D' (Plugin). Hierarchy is Plugin -> Project -> Marketplace -> Engine Programs -> Engine Plugins -> Engine.
Module 'PaperZDEditor' (Marketplace) should not reference module 'Paper2D' (Plugin). Hierarchy is Plugin -> Project -> Marketplace -> Engine Programs -> Engine Plugins -> Engine.
Errors validating plugins or modules.

Result: Failed (OtherCompilationError)
Total execution time: 8.88 seconds

[smoky goblet]

Does Paper2D not provide a way to add custom importers through some sort of extension system?
To make that work you’d probably have to move the marketplace plugin to the engine. You could copy the engine plugins to the project (that will cause them to be overrides) but then you’ll also have to copy any engine plugins that are dependent on them.
If they’re from the marketplace why don’t they already work properly with the engine plugins?

[brave turtle]

I have no idea, it's weird because Paper2D is engine plugin, but PaperZD and the AsepriteImporter are in marketplace folder.

and then PaperZD uses some Modules from the Paper2D plugin which causes the error above when trying to compile Paper2D plugin

[smoky goblet]

Why is it weird? Did you not get those from FAB? The problem only happens because (I have to assume based on the error) the Engine module has been modified to depend on the marketplace.
There shouldn’t be any issues with ZD using modules from 2D unless things aren’t exported for public use.

[brave turtle]

Yea every one was from FAB, I have no idea how to fix it though now.

[smoky goblet]

That doesn’t explain why Paper2D thinks it has a dependency on the Fab plugins. Did you do that after downloading the others? You wouldn’t have gotten that one from the marketplace.

[brave turtle]

so what does it mean? I enabled this engine plugin before downloading/activating the other ones.

and this error is when I'm trying to compile Paper2D, so why is there error that other plugins reference it and do not allow for it to be compiled?
should I look then into PaperZD and AespriteImporter to not depend on Paper2D?
I don't get this error at all.

[smoky goblet]

Crap, my bad. Did you already copy Paper2D into your project? The error is claiming that it’s a Plugin instead of an Engine Plugin.
Sorry I’m on mobile at the moment or I’d look at my own source to help.

Been traveling all day 🤪

[brave turtle]

Yeah, so it actually first time happened when I tried to copy that engine plugin to the projects' folder, (cause I didn't know how to force compile engine plugin).
I moved it to project plugins, tried to compile and it failed with that error.
I removed it back, and then tried that .bat file to compile only the plugin.

And so to make it work I had to remove these 2 plugins from Marketplace folder temporarely so it actually compiles.

[smoky goblet]

You don’t force compile engine plugins. You allow the plugin & module dependencies to build the modules that you need when you build your project.
So as long as Paper2D is back where it belongs, the marketplace plugins are where they belong and you add dependencies/enable the two marketplace plugins in your project, things should compile.
I’ve never compiled a plugin using RunUAT.

[brave turtle]

Okay, so there might be something else.. when I tried to just compile the project, I got error with like Paper2DComponent.generated.h missing and I read the solution here:
https://forums.unrealengine.com/t/how-to-rebuild-an-engine-plugin/363175

maybe should I just copy 3 of these plugins to my project's plugin folder

[smoky goblet]

That’s advice for a launcher build. Are you using an launcher build or a source build?

[brave turtle]

How can I know? I'm not using epic's launcher to launch project if it's what it's about?

also 2nd problem is that after I made some changes to plugin and I rebuild project, it doesn't actually detect that I made any changes to the plugin

[smoky goblet]

Have you downloaded and are compiling the engine source from GitHub?

[brave turtle]

no, yeah so its from the launcher I guess

and so because after making changes to the plugin I was looking how to force compile engine plugin and I found this
https://www.yanchenta.com/post/ue5-tips-rebuild-your-plugins

and it would be all good but running that then causes this error

Module 'AsepriteImporter' (Marketplace) should not reference module 'Paper2D' (Plugin). Hierarchy is Plugin -> Project -> Marketplace -> Engine Programs -> Engine Plugins -> Engine.
Module 'AsepriteImporter' (Marketplace) should not reference module 'Paper2DEditor' (Plugin). Hierarchy is Plugin -> Project -> Marketplace -> Engine Programs -> Engine Plugins -> Engine.
Module 'PaperZD' (Marketplace) should not reference module 'Paper2D' (Plugin). Hierarchy is Plugin -> Project -> Marketplace -> Engine Programs -> Engine Plugins -> Engine.
Module 'PaperZDEditor' (Marketplace) should not reference module 'Paper2D' (Plugin). Hierarchy is Plugin -> Project -> Marketplace -> Engine Programs -> Engine Plugins -> Engine.
Errors validating plugins or modules.

Result: Failed (OtherCompilationError)
Total execution time: 22.83 seconds
Took 23.09s to run dotnet.exe, ExitCode=6```

[smoky goblet]

Alright then. In that case you can’t make changes to engine plugins in place (hence not seeing changes).
If you want to modify them, you have to move them and any dependencies from the engine to your project. That includes marketplace plugins.
For Paper2D this might not be a big deal, but it can become a real problem for some engine plugins.

[brave turtle]

you can see even making intented error in code it still causes succesfull build

okay so yeah it would speed up everything, i can move these to Project's plugin then

[smoky goblet]

Come to the dark side! Download the source 😈😈

[brave turtle]

will this speed up the process of rebuilding/compiling? or each change I make anywhere will make me rebuild it all? xD

also if you have any good tutorial / documentation how to do it I would be glad for recommendation

[smoky goblet]

Eh not really. It will speed things up because you won’t have to move plugins out of the Engine to modify them. If you plan to do a lot of that, then it might.
It’s an expensive first time compile cost though.
I think the Epic docs a pretty good in this case. I’m surprised there isn’t a pin for it. Next time I’m on my computer I can send you a link if you haven’t found it.

[brave turtle]

ill look into that, thank you for all the help!

[white river]

Does anyone know of some kind of list of things that one can disable to make the engine compilation go faster? like disabling plugins, disabling platforms etc

[iron dome]

The best boost you can get is to not compile the ue5 project or the entire solution.

[hidden hedge]

yeah if it's a native project then it builds engine modules on demand

[iron dome]

Create a project in a non-source engine, change its engine version to the source one, then compile that project, not the engine.

(Or however you wish to get a project that you can compile)

If you have a launcher project and the source engine isn't registered for the change engine right click option, you can either compile the unreal version selector exe directly or take it from the launcher version, stick it in the source build's binaries folder and just run it to register the engine.

[hidden hedge]

if you do use the native project structure, then you just edit the uproject to remove EngineAssociation

those steps are for a foreign build

[iron dome]

Yeah.

[heady sparrow]

"DisableEnginePluginsByDefault": true,

but yeah the #1 thing is to just never build the entire engine when you have a project

[muted jacinth]

Hi, probably a stupid question, but i cant find a way to download vs 2022 community required for UE5.5 🤷

[hidden hedge]

does downloading the 14.38 toolchain in VS2026 not do the trick?

[muted jacinth]

im not sure, i want to build ue5.5 oculus branch from source on my work pc

[muted jacinth]

i'll give it a shot, thanks

[astral elm]

MS in it's infinite wisdom has decided to hide them away, even from the "Older downloads" area. Here's a link option ( several third party sites host it now... )
https://www.techspot.com/downloads/7493-visual-studio-2022.html

But yeah, sswires' answer should work

[hard shell]

I'm trying to create an Installed Build of a source code editor, but I'm facing unexpected problems

The BuildGraph command runs fine without any outstanding error (from what I saw) and it ends successfully, but it doesn't generate the Win64 executable for me, what am I doing wrong in the process?

[astral elm]

show the command line string you use to build it?

presumably something on these lines
D:\UnrealSourceFork\UnrealEngine\Engine\Build\BatchFiles\RunUAT.bat BuildGraph -target="Make Installed Build Win64" -script="Engine/Build/InstalledEngineBuild.xml" -set:WithAndroid=true -set:WithMac=false -set:WithMacArm64=false -set:WithIOS=false -set:WithTVOS=false -set:WithLinux=false -set:WithLinuxArm64=false -set:WithDDC=false

[hard shell]

I'm using this one (sorry for formatting)

RunUAT.bat BuildGraph -script=Engine/Build/InstalledEngineBuild.xml -target="Make Installed Build Win64" -nosign -set:GameConfigurations=Development;Shipping -set:WithWin64=true -set:WithAndroid=false -set:WithDDC=false -set:WithLinux=false -set:WithLinuxArm64=false -set:WithIOS=false -set:WithTVOS=false -set:WithMac=false

[astral elm]

Hmm. looks ok at a glance. I have been able to get working Installed builds with my version, but it's been maybe 2 years since I last did it...

[hard shell]

it does, right? I've made a build about 1 month ago, but am not sure what went wrong with this one, in relation to that other

[tired crane]

hi guys, need help
does someone know how to create shading models in ue5
i have a built toon shading model, but it have some artifacts, does someone can help me with this?

[jagged reef]

Can someone please help me find the change for fix "UE-295231 [CrashReport][Assert] Renderer!FRayTracingSBTAllocation::GetRecordIndex() [RayTracingShaderBindingTable.cpp]" Part of Hotfix 5.6.1

https://forums.unrealengine.com/t/5-6-1-hotfix-released/2639316

[thick furnace]

https://github.com/EpicGames/UnrealEngine/commits/5.6.1-release/Engine/Source/Runtime/Renderer/Private/RayTracing/RayTracingShaderBindingTable.cpp

the topmost is the only added to 561 since 560, 15941b294fff4695e557c141a01a418090fe159a

there are only two commits in /rayracing/ for 56-561 if you look at folder commit history

[jagged reef]

Thanks!

[grand marlin]

Hey folks, does anyone have a proper guide for using unreal with newer VS community versions? I literally cannot find a download for 2019 anywhere (4.27)

Oh my gods I found a direct link

https://aka.ms/vs/16/release/vs_community.exe

[heady sparrow]

arguably the build tools matter more than the ide here if you are using an older version of UE but there are definitely things I have seen of newer versions of VS mucking things up here and there

so YMMV

[carmine gorge]

Hi all I am having trouble with Unreal 5.3 ever since I upgraded my Mac to Tahoe OS. It keeps telling me to install the correct version of visual studio and some other plugins. I have been trying to find the correct ones I need to install for the Mac but no matter which I install I still get the same error. I have Xcode installed and set it as my default compiler in Unreal.

this is error im getting

sorry this is correct one

[bright lava]

you will need to make some modification to a json file in MacOS folder in engine installation location

[wheat python]

hey guys can anyone help me this error?

[heady sparrow]

you do not have debug symbols

this channel is for for people building the engine from source and messing with it than "the engine crashed" (or reading it I guess) (afaik)

I don't really know much about shader bindings either way... are you creating a custom shader of any sort?

[honest vale]

can I choose a subset of debug symbols to load with VS on windows for faster loading?

also, any pointers on reducing ram/vram usage while debugging?

[rich fiber]

not sure if its the right channel, but so far no help anywhere else, is anyone else having issues about issues upgrading from 5.6 to 5.7 ? I got an error last night about text2 something...sorry not very specific but got that twice. Anyone seeing this ???

acc to bing I guess this is the anwswer as noted on OP at forums: Disable Meta Humans: Manually disable Meta Humans in the project file to resolve missing module errors.
1

in case others are having this issue https://www.bing.com/videos/riverview/relatedvideo?q=error+upgrading+project+from+UE5.6+to+5.7&mid=EB414AAF1EE97CD55FE0EB414AAF1EE97CD55FE0&FORM=VIRE

[thick furnace]

yes, in VS advanced settings set loading mode to Manual and from Modules panel load & set "always load" modules you want

[rich fiber]

oops already sent

anyway it worked great, so much to do just to upgrade from one engine v to another ;0-0

[stoic ermine]

has anyone had any of these errors when downloading something from fab?

[topaz python]

Hello there,
I am working on the modified unreal engine 4.27 and modified unreal engine 5.6
I first build the UE5.6 then UE4.27 but now the problem is UE4.27 is not able to find UBT exe. There is not change in the code related to building and generated projects/engine.
any help to fix this issue.
I can generate the project with the command and still works easily but then not able to debug properly as the project just only load with out the engine in the visual studio 2022.
and all of the problem is only happening with UE4.27.

[topaz python]

I did some digging and uninstall the Epic Game Launcher and then run a steup.bat for UE4.27 but now UE5.6 is not generating project files for project created with UE5.6, So I think that the Engine are only registering one by one not at once and most probably due to the change in structure of the UBT for UE5.XX as it different from UE4.XX. Is there any way to restructure the whole UBT for UE5.XX or UE4.XX so that we can easily work on both project.
Thanks in advance

[mighty charm]

how to disable UbaObjTool so it stops spamming my build logs

[thick furnace]

unreal version selector?
path did change from ue4-5 transition, if you need to invoke ubt for project file generation do it from command line with absolute path to the runuat, make bat script helper

[topaz python]

i already did that but the problem with that is the project is loaded and generated properly and worked perfectly fine but not able to load the engine in the solution hence not able to debug properly.

[thick furnace]

Thats what u said. Unreal engine installer registers single context menu handler to a fixe d path to the unrealversionselector from either egl or engine. And if most recent installed engine is ue5 it will be ue5 selector with ue5 path search code

If most recent were ue4 handler in windiws regustry would be would be set to ue4 uvs using ue4 path code.

You can look in registry for contrxt menu handler path

I use variety of engines but due to this my context menu is set to ue5 uvs, but for ue4 projects i use a bat file with ue4 uvs path

[topaz python]

if we just restructure the UE5's or UE4's UBT so that they handle the path same day.

[thick furnace]

That would need to backport the ubt change from ue5 to ue4.
In ue4 there was no ubt platform folder but it was added in ue5. And the problem with needing to manually reregister uvs to custom exe

[topaz python]

so we need to restructure the UE4 to work accordingly?

[thick furnace]

I mean, backportinng changes to uvs that would take several days and custom engine build and windows registry reregistration scrupt vs just adding a two line bat file that can be written in a few minutes

[crude stream]

Is it normal for ~700 build steps when packaging a game? And for it to keep adding 700 build steps instead of getting cached

4.27-plus

[hidden hedge]

It depends. You'll get it consistently if you specify -clean

[crude stream]

Nvm, a build kept failing and when I got it successfully, it now cached off

[honest vale]

Module.AutoRTFM.cpp.obj has the directive _ITERATOR_DEBUG_LEVEL=0 for UnrealGame Debug target, but debug builds should have that value greater than zero. How can I change the this target's compilation flags so I can set this directive's value as I like?

[distant spindle]

Do you mean some version of UE do not support Debug target out of the box?

[honest vale]

No. Unreal is configured in a way to disable debug levels of their modules for certain debug targets such as UnrealGame-Debug while they are enabled for UnrealEngine-Debug

[distant spindle]

try to add definition in AutoRTFM.build.cs file

PrivateDefinitions.Add("_ITERATOR_DEBUG_LEVEL=1");

maybe with a condition:
if (Target.Configuration == UnrealTargetConfiguration.Debug)

[honest vale]

do you know where defaults are located at?

[kind osprey]

Quick question, can anyone see my fork of unreal engine provided they have access to the original repository?

[smoky goblet]

Not sure. they're marked as private in github.
Easy experiment: can you see mine? https://github.com/MagForceSeven/UnrealEngine

[jagged drift]

yes I can , 834 commits behind

[kind osprey]

Alright thanks

[kind osprey]

I'm having a problem with an engine change I'm trying to port to 5.7, if anyone cares to have a look that would be much appreciated

https://gamedev.stackexchange.com/questions/217024/unreal-custom-buffer-output-issue

[astral elm]

1st thing I would do is to verify the original works for sure, on the target engine version it was made for
( I like sanity checking... )

also reading through the comments for clues may be of value https://github.com/EpicGames/UnrealEngine/pull/8403

[kind osprey]

Good call on checking the original, I was hoping to avoid having to rebuild the engine once again, let alone finding space for another version on my SSD, but I will do that just to make sure.

I have looked through that discussion and did not find anything related to my particular problems

[vagrant falcon]

could i ask for a favor, is their a really good tutorial to walk someone through the best game creation method for Unreal 5 that would include creating animated scenes potentially in it?

I'm struggling to understand and could really use a good tutorial

[smoky goblet]

Try #ue5-general . This channel is for help building the engine directly from the source.

[vagrant falcon]

i apolagize. thank you.

[smoky goblet]

no worries.

[vagrant falcon]

just so i can understand this channel a bit better, could i ask what that entails out of curiosity? just like a paragraph summary?

(the building the engine directly from the source?)

[smoky goblet]

Yes, downloading the source from github and building the engine. As opposed to what you download with the Launcher.

[vagrant falcon]

ooh ok thank you. yea im trying to understand how to work with github too for some AI thing, I just want to animate and do script writing, but doing that on my own means trying to learn everything else lol

[flint veldt]

People have said our tut is very helpful:
https://youtu.be/mhn22elvq_Q?si=FzDZC-JNf75Pck0_

[honest vale]

does anyone know where Unreal Engine sets up the windows registry for source builds?

looking to set up a custom value for installed builds

[dusky compass]

Computer\HKEY_CURRENT_USER\SOFTWARE\Epic Games\Unreal Engine

[heady sparrow]

you can also use a relative path in EngineAssociation field in the uproject iirc but doing the registry will make it global so that might be more convenient

just keep in mind if you have other people that use this project they need the engine to associate in a similar way

[honest vale]

any idea where it's set in source files?

[heady sparrow]

the GUID? the uproject field?

what are you referring to

[honest vale]

I'd rather change the source than writing a script to change the registry value

[heady sparrow]

uh

[honest vale]

guid in registry

[heady sparrow]

looks like FDesktopPlatformWindows::RegisterEngineInstallation

[honest vale]

awesome

[heady sparrow]

fwiw this is very very unorthodox and 90% of the time the project and the engine are kind of sitting in the same folder

[honest vale]

ya I am doing managed game code

[heady sparrow]

as opposed to unmanaged? what does that actually mean?

[honest vale]

native projects

ones that sit in the UE root

[heady sparrow]

then why do you even need a guid?

[honest vale]

learning

[heady sparrow]

https://dev.epicgames.com/community/learning/tutorials/8JYW/setting-up-an-unreal-engine-studio-the-epic-way#projectfolderstructure

my opinion would to be preferthis stuff over tweaking the engine to do something weird in that might create confusion later... the path can be relative

my engine association is just in the folder above (well, beside it I guess) so I do "EngineAssociation": "..\\UnrealEngine", which is not the "ideal" setup but at least it's not a registry key

[smoky goblet]

Does that project use UGS at all? Just curious as to any other limitations cause I know UGS is a little particular in its expectations for project setup.

[hidden hedge]

UGS expects exactly the native project setup and nothing else

[smoky goblet]

Okay, that's what I thought but I wanted to double check.
I'd love to be able to get them in a slightly different configuration. It'd make the perforce streams a little more sensible, but oh well.

[hidden hedge]

Well it is pretty sensible the way the above guide lays it out. It would be pretty unusual to have every game project at a studio switch engine versions all at the same time

[smoky goblet]

Absolutely. It's just weird the way we have to structure the project stream to share and import to have them in the "right" structure.
At least compared to what one might expect when trying to configure multiple streams.

[hidden hedge]

Well you usually wouldn't be using import to bring in the engine, you'd usually merge it into the project stream from the pristine engine stream

[smoky goblet]

Maybe, but I’ve found it much nicer for even the project copy of the engine to be in its own stream and then that stream gets imported into the project stream.

[hidden hedge]

That just sounds like an unnecessary layer of abstraction

[smoky goblet]

For most people on the team it doesn’t matter too much. Only really affects me.
Makes it really easy to prevent unintended engine changes with an import over import+.

[hardy chasm]

Hi, I have a problem with Quixel bridge on installed build of UE5.6 from source.
It's not there, so it not importing megascans materials.
Tried building the plugin manually and turning on manually and still didn't have the materials.

[hardy chasm]

Nevermind, needed to build Bridge and Fab plugin for it to work and add "EnabledByDefault": true, to uplugin so don't need to enable it manually

still don't know why it wasn't installed automaticaly with BuildGraph🙃

[heady sparrow]

no this is just on raw git for now. I guess they are technically submodules

submodules are so annoying sometimes for sure though

[willow vapor]

Anyone familiar with / working on Mover 2.0 around? I'm trying to work out exactly how you're meant to use interpolated sync state correctly to drive secondary effects such as animation.

For peers with authority (server/client) hooking into FinalizeSmoothingFrame (with tick smoothing on, of course) and does exactly what I want.

However, for non-authorative peers I can't actually figure out where the mover applies it's interpolated state.

I hooked into TickInterpolatedSimProxy but my sync state does not appear to be getting interpolated correctly, and I can see that it's executed long before any changes are actually applied to the pawn I can see in the world on remote peers.

I could of course cram it into / re-transmit the smoothed data via a replicated component on the server side; but this feels wasteful considering these inputs get replicated to everyone anyway - plus this potentially decouples the mover state from the visuals.

[honest vale]

force push on release, is that typical for unreal devels?

[slim berry]

I feel a bit dirty after hacking local-only data layers in. For some reason the engine does a check whether you are changing the runtime state of a data layer from an authority, even if it's marked client-only. But listen servers are not clients, so listen servers can't activate them? Feels wrong.

Imagine you have a cosmetic-only data layer, let's say a 3D skybox. I want each client to have it's own 3D skybox (data layer) displayed based on some condition, including the listen server player of course.

Not allowing that seems like a weird restriction. No crashes so far but maybe I'm missing something and this will backfire soon.

[heady sparrow]

It's absolutely possible they just did not think of listen servers there I suppose

[slim berry]

😐

You're saying pull request time?

[heady sparrow]

Given it's just a skybox I would argue it could even just be something much more simple than a data layer but I imagine they make this nicer to work with somehow

[slim berry]

Yeah, imagine you have a whole bunch of cosmetic stuff

[heady sparrow]

I don't fully understand how data layers work, I have no clue what the codepath looks like so I can't say

[slim berry]

Snow VFX sounds etc

[heady sparrow]

would a level instance not allow itself to be loaded locally here?

not sure if it would be nicer for your case or not, I am not really sure how data layers are stored

[slim berry]

It has 2 sets, local-only and replicated data layer names. I basically forced it to add it to the local only path. From there hopefully business as usual.

Hm maybe

[heady sparrow]

is AWorldDataLayers::ResolveEffectiveRuntimeState the path that stuffs it into the replicated set without considering being client only?

[slim berry]

Yeah, in AWorldDataLayers::SetDataLayerRuntimeState you can see it doing the switcheroo

[heady sparrow]

yeah I'm not sure where this case working like it does now would be helpful for listen servers... surely it being local only would be a valuable idea here

could maybe try to fool this thing into making IsClientOnly layers return IsServerOnly on the listen server based on the local net mode which is lame but could dodge needing engine changes (assuming it's even possible to make new datalayer extensions)

[slim berry]

Yep. Those branches are also only done in this one file (the CanChangeDataLayerRuntimeState) so probably not an limitation of the system

I did it without changing the engine by writing directly to the private variables / calling the private ResolveEffectiveRuntimeState

[heady sparrow]

yeah that would work too... I was thinking writing to UDataLayerAsset's LoadFilter somehow before this but it would be super spaghetti

[slim berry]

Ah ok

Well if it doesn't seem totally stupid it might be worth a pull request I guess

Trivial change too

[heady sparrow]

I'm not sure if I would want a new flag for "local only" to preserve the old setup or what

or maybe even making EDataLayerLoadFilter a bitflag setup where you checkbox both server and client only

with getting a PR merged the less stuff that changes the better but they might just rearrange your changes to fit what they want

[slim berry]

Yeah that could work. Or just update Client to include listen server

[heady sparrow]

I think it's a bit like... unexpected to treat the listenserver as a Client from a naming standpoint but hopefully it at least indicates the problem to epic

[slim berry]

I knew you'd say that 🙂

Programmers, so predictable. The older I get the more I lean towards "works? submit" 😄

[heady sparrow]

if this was for my local only project I would not care

but if this changes and affects everyone it might be unexpected I guess to suddenly treat the listen server as a client

[slim berry]

Yeah fair

[heady sparrow]

a comment on the boolean would be simple enough I guess

waffling about semantics is pointless but there are existing assumptions that this lives in

I would be unsurprised if there were other places this word means listen server too in though lol

[slim berry]

I'll run with it for a while and see what happens. Worst-case I can convert the data layers I setup this way into level instances later (select actors in layer convert, repeat, maybe with a script).

Cool cool. Thank you so much! Not that it has made this any safer but I feel better and that's what matters 🙂

[dusky compass]

Huh? Listen servers should have authority in their instance

[slim berry]

@dusky compass It's not about authority, I phrased that poorly. The listen server can't activate a Client marked data layer

So
Client cant activate Server data layer.
Server cant activate Client data layer.

So if you have a cosmetic only layer that you just want locally enabled, there is no way to activate it on both client + listen server.

Given that the listen server is kind of acting like a client + server, it seems reasonable to just allow listen servers to activate Client layers too. It's the server after all, it should be able to do whatever it wants.

[echo tinsel]

Hello everyone, has anyone managed/tried making some sort of custom virtual texture loader? Essentially, what I need is to be able to create a SVT/RVT or something with a known size/tile/mip layout, and load in pre-generated tiles from disk.
Let's say I already have all the tiles and mip levels in some sort of format on disk, can I load them dynamically? This is to support loading arbitrary size terrain textures without pre-baking them directly inside unreal.

Although, last-ditch option is to make some sort of pre-baking tool that would make a RVT asset I guess.

[iron dome]

It can definitely be done. Slate, for instance, can load icons direct from pngs/etc. at runtime.

[stuck hawk]

Hey there guys, I've forked the UE5 source code and want to make my own branch off of the 5.5.4 version. Anyone know how I can do this?

I can't seem to find the commit with the 5.5.4 tag. I use Git Extensions

[astral elm]

It's a branch

be sure to follow the docs ( for your desired engine version )
https://dev.epicgames.com/documentation/en-us/unreal-engine/building-unreal-engine-from-source

[quick crystal]

Why does upgrading resharper ultimate require the engine source to rebuild the entire engine? This is ridiculous.

Why am I getting the following error when trying to generate the project files for 5.7.2 targeting vs2026:
Generating VisualStudio project files:
Adding projects for all targets...
Adding projects for all targets took 7.75s
Visual Studio 2022 x64 must be installed in order to build this target.

Result: Failed (OtherCompilationError)
Total execution time: 9.89 seconds

GenerateProjectFiles ERROR: UnrealBuildTool was unable to generate project files.

I have the following in my BaseEngine.ini:
[/Script/WindowsTargetPlatform.WindowsTargetSettings]
Compiler=VisualStudio2026

I also updated the engine source's BuildConfiguration (under Engine\Saved\UnrealBuildTool to have the vs2026 info:
⁨```xml
<?xml version="1.0" encoding="utf-8" ?>
<Configuration xmlns="https://www.unrealengine.com/BuildConfiguration">
<ProjectFileGenerator>
<Format>VisualStudio</Format>
<Format>VisualStudio2026</Format>
</ProjectFileGenerator>
</Configuration>

[smoky goblet]

I believe that setting is only used by the Editor for jumping to definitions from blueprints to code.
It's not used (nor are any other ini values) by the batch script for project generation.
Have you tried everything from this forum post which appears identical to your issue? https://forums.unrealengine.com/t/generating-project-files-from-source-on-5-7-with-visual-studio-2026/2674941

[quick crystal]

I will admit I haven't. I will read that now, thank you.

Thanks, that fixed it. I figured "since it's forcing me to recompile everything over a stupid resharper upgrade, I might as well sync my fork to the latest hotfix"

[dusky compass]

Resharper tries to be very smart, but it fails because ANY smallets change to any build config or source files will trigger rebuild on source setup

[honest vale]

anyone blogs/articles you know of that deep dives into unreal's audio system source code-wise?

any*

[thick furnace]

no, lol. you just have explore audio manager code and abstraction layer

[heady sparrow]

it might be interesting to check the commit history for audio modules

you might get an impression on what is being worked on or fixed etc

[slender nymph]

I'm trying to make a InstalledEngineBuild that includes all Programs, Extras and Source files that one would get if one installed the Epic Games Launcher editor, with all debug info, but no matter what settings I try I can't get it to include any more Programs than "ShaderCompileWorker" and "UnrealLightmass" and the Source folder is almost empty (just 93 mb instead of the almost 4 GB one gets from the launcher).
I have looked around for solutions but I might be bad at searching, or is manually copying or making extensive changes in the XML file the only solution? 🤔 Is there maybe another XML file out there already made for this?

[dusky compass]

You need to edit default InstalledBuild configuration, it does not include everything as it is, you have pretty much write your own

[slender nymph]

That was what I was afraid of. One would think someone very diligent already had done that at some point, and been so kind as to share it 🙃 I mean, how do you even write the filter that selects the right 64 830 files in the Source folder, and not any of the other 539 284 files that is not supposed to be included? I am sure there is a pattern for that, but so far it ha eluded me

[astral elm]

I used an Installer build a couple of years back, but we ended up not really needing it. This was our command to build it for ref
D:\UnrealSourceFork\UnrealEngine\Engine\Build\BatchFiles\RunUAT.bat BuildGraph -target="Make Installed Build Win64" -script="Engine/Build/InstalledEngineBuild.xml" -set:WithAndroid=true -set:WithMac=false -set:WithMacArm64=false -set:WithIOS=false -set:WithTVOS=false -set:WithLinux=false -set:WithLinuxArm64=false -set:WithDDC=false -buildmachine -nop4

Worked fine, no problems

[slender nymph]

Thank you Karma! I don't know what "-buildmachine" does but this sadly does not make the build include Programs like AutomationTool and such, and we have Designers that do some programming, that don't want the full source code (and we don't want them to! 😛 ), and therefore still need the tool normally included in the Launcher install :/

[astral elm]

hmm hmm. I presume you have the full source editor working normally, and it has AutomationTool?

[slender nymph]

Yes, that is not a problem

[astral elm]

I would dig into the InstalledEngineBuild.xml file, and see if you can figure out what it is doing. AutomationTool is mentioned several times in the file...

[slender nymph]

I mean, we can probably manually copy it over or just add some XML lines to copy it over, but needing to add that part makes me wonder what else we might need to add, and maybe won't notice until as quickly. I'm just concerned that we will spend days rebuilding, repacking and redistributing the builds 😉

[astral elm]

It is the nature of gamedev... Patience is key

[slender nymph]

Yeah, I suppose 😣 and that's why I'm currently doing the long and tedious work of trying to write a custom XML file that suits our needs, but it would have been so sweet if there was a solution already, especially as this feels like a problem someone must have had before 😉

[astral elm]

I have a hunch the -buildmachine might be a key for getting some tools

In general, I seem to have gotten the impression on this forum that using Installer Builds is not particularly popular

[slender nymph]

buildmachine is not anything I can find any reference to in any of the XML files we have though o.O

Well, as a programmer I can understand that, but I know my team sure likes it 😉

[astral elm]

One more idea : if the bits you are missing are stuff you are NOT modifying, you could just write a script to copy them into the right places before you zip things up and distribute?

[slender nymph]

We also try to not actually change any source code that is not directly shader related or absolutely necessary, as we still plan to upgrade the engine for at least one more year, so not having that as an easy solution is not all bad either 😉 so tempting to just go to the source sometimes

[astral elm]

We have crossplatform game but all our mods are mobile focused, so we have been able to let devs work on stock engine while only the builders need to be source forks...

[slender nymph]

Well, some of the bits need to get built with the engine to work, or at least to be reliable, but I guess all the C# programs should be fine

[astral elm]

yeah, the c# bits are easy

[slender nymph]

Yeah, we have up until just last month been able to work with only modifying shader codes, but we ran into an issue with Mutable that we have to fix with a source build, so we don't have a choice anymore

[astral elm]

I think you might be able to do shaders with plugins? but ah, so Mutable forces your hand huh

[slender nymph]

No, the shaders I'm talking about is modifying a bit more of the base code, like; we use the Subsurface and Eye shading models and do our own stylized shaders, but in order to get it flat but still get dynamic global illumination we also hade to modify Lumen

Can't do that with plugins sadly, can't add your own Shading Models without source code changes, but you can rewrite the shaders that is already there, as the shaders compile at runtime 😉

[wary bison]

downloading unreal engine source for windows for the first time, and i've never used the github desktop app, but curious how it works? it seems like the name is just "epicgames/unrealengine" which i have no indication of which branch it's pointing to, i do have a specific branch selected but i just dont know how it "knows" that im looking for the version im selecting.

just dont want to clone the wrong one as this woul djust be a wast eof time

[heady sparrow]

that's just the repo and it might be on ue5-main by default

you want to use the latest tagged release for the version you want

a tagged commit

[wary bison]

yea i think that's correct, i am on 5.6 branch, but not sure how to use the tagged one, as it just always by defualt has not branch indication on it

[heady sparrow]

the github site shows all tags

https://github.com/EpicGames/UnrealEngine/tree/5.6.1-release I think this tag is what you want

[wary bison]

yea that's the one, is that what i would do for the URL to clone?

that didn't work by just usign that URL

im reading ( via google) that i have to clone the repo first , and then switch branches? i would hope that isn't the case, unless it's not like im downloading 2 whole engines

[heady sparrow]

you should be able to select a branch when you first clone it afaik

but I don't know for sure

[wary bison]

it was alwasys this way with mac

i'd have a hard time beliving it was easier on the mac lol

[heady sparrow]

this is not an os specific problem, this is a git client issue

github is just hosting git

git is not unique to github

you can use any git client you like and many people just use the commands directly

I use git extensions and Rider's integration

git extensions is pretty overkill but github desktop is too simple (at least from what I remember, it's okay to use)

you can have as many git clients as you want so there's no need to change anything

[wary bison]

i'd have no issue just doing it via the command line / terminal

[heady sparrow]

then just clone the repo by url?

[wary bison]

but the command it's giving me is still just the unreal engine default one

i wouldn't know how to adjust it for 5.6 specific

[heady sparrow]

-b

https://stackoverflow.com/questions/1911109/how-do-i-clone-a-specific-git-branch

you are going to need to get familiar with googling questions for git stuff

it makes sense to ask about this in case unreal had some specific thing but I would say just make darn sure you actually follow the instructions

you need git lfs, this is not just nice to have not just for the main repo! I got this mixed up with other repos that aren't ue5-main

git lfs is a sort of addon feature to git that makes it handle binary files a bit differently

[wary bison]

ye i had git lfs on my mac

this is day 1 on my windows, im new to it

[heady sparrow]

read the guide in the readme of the github repo

[wary bison]

beast machine tho (comparitively)

[wary bison]

i did...

[heady sparrow]

oh and if it helps if you find you are getting the wrong branch you could just cancel it mid-way in most clients

no need to let it finish

downloading the engine will take a while even on a decent connection as it's a ton of tiny files

also afterwards setup.bat will need to get a ton of extra dependencies

if it helps you can reduce the work setup.bat does to specific platforms but I forget what the exact args are now

or if it's even needed to specicy more than the current platform

[wary bison]

yea i've done that a few times now lol, i will now try to get git on here and try the command line method

[heady sparrow]

you don't have git on there? if you read the getting started instructions make sure you also do what they tell you to

[wary bison]

i legit got the computer turned on today

and it just asked me 90 questions i just started skipping through them

[heady sparrow]

have you ever used windows before?

[wary bison]

when i was way younger

but i have used mac for unreal for the last 3 years

[heady sparrow]

if not that's okay but it might be a bit getting used to here

I would suggest turning on show hidden files and folders at least

you also want the full right click menu on things so you can use the extra stuff unreal adds

i think its under a submenu by default or something, I forget

[wary bison]

$ git clone https://github.com/EpicGames/UnrealEngine.git --single-branch -b 5.6-release
Cloning into 'UnrealEngine'...
fatal: Remote branch 5.6-release not found in upstream origin

this is what just happened

i think i fixed, it is now cloning it up

we're cloning it up as they say

the question is... where is it cloning it to lmao

[wary bison]

ok i see now, we're looking decent

i used '--depth 1'

that might be what you were referring to

for the smaller size

$ git clone https://github.com/EpicGames/UnrealEngine.git --single-branch -b 5.6 --depth 1

[heady sparrow]

use the hotfix version .1

do not use the non hotfix version

[wary bison]

i figured the 5.6 branch was the 5.6.1 branch

[heady sparrow]

oh, no I wasn't referring to that but I should have mentioned shallow clones if you have rough internet

[heady sparrow]

use the tagged commits

do not assume stuff like that here

[wary bison]

i will use tagged commits in future, but pretty sure it is the latest branch

[heady sparrow]

they will of course have both the first 5.6.0 and 5.6.1, you want the hotfix here unless you somehow don't want the hotfix

[wary bison]

wasn't really an assumption, think i asked this before

[heady sparrow]

latest commit hash?

fwiw the good news is you won't have a huge difference here

so it should not take long to switch if you want to

[heady sparrow]

you said "I figured" which is generally implying you came to some conclusion here, sorry

[wary bison]

this is the one i used

[heady sparrow]

also before you compile make sure you have a nice project to use

do not ever compile the engine alone... it is huge

compile with a project that uses what you want

[heady sparrow]

the confusing thing is the tags are what you want here (https://github.com/EpicGames/UnrealEngine/tree/5.6.1-release)

[wary bison]

yea all good, i know what you mean, things are always more complicated, i feel you on being proactive and triple checking thigns like this. as it can be a time waster/memory waster if done incorreclty

[heady sparrow]

I will say definitely do not build without a project if you can avoid it... this would actually waste a lot of time and space if you don't use a project that uses only some plugins

[wary bison]

got you, not new to building from source, just buildilng from source via windows. i have been using source engines for mac for about 2 years now, but yea processes are always different and can have wierd bugs, im sure im only just running into them

[heady sparrow]

if you have any weird issues definitely ask in here or #cpp and we should be able to help... a lot of windows-specific stuff might come up like old windows api versions or msvc being annoying

oh yeah, I should give you the better buildconfiguration that turns on hyperthreading

it won't matter a huge amount but this old example #engine-source message
here (thanks Daekesh) is an example of setup.bat calls that skip some platforms but I think half of these don't do anything now lol (in fairness this is from years ago)

your git client might call setup.bat for you which I'm not clear on the functionality of but it's not too bad to miss doing that the "thin" way

[wary bison]

defintley will, and yea i think i got the majority of the "unreal specific" things downloaded, as it was a bit of stuff, but i may have missed some things. running setup.bat rn actually

[wary bison]

ahhh should have waitied for this lmao

setup.bat is takin quite a bit, but i am using phone hotspot for intenets atm lol

a bit degenerate i know

but we do what we must!!!

[heady sparrow]

<?xml version="1.0" encoding="utf-8" ?>
<Configuration xmlns="https://www.unrealengine.com/BuildConfiguration">
<WindowsPlatform>
<!-- you can specify an msvc version here if you have to from newer ones being annoying. THE ENGINE WILL EXPECT SPECIFIC VERSIONS SOMETIMES THAT ARE OLDER THAN THE LATEST-->
<!--        <CompilerVersion>14.38.33145</CompilerVersion>-->
</WindowsPlatform>

<ParallelExecutor>
    <!-- the old way to enable hyperthread execution -->
    <ProcessorCountMultiplier>2</ProcessorCountMultiplier>
    <!--I reduce the memory per action a bit but this is generally intended to be 2-1.5gb Making this low will risk failed builds and freezing from running out of heap-->
    <MemoryPerActionBytes>1073741824</MemoryPerActionBytes>
    <bShowCompilationTimes>true</bShowCompilationTimes>
    <bShowPerActionCompilationTimes>true</bShowPerActionCompilationTimes>
</ParallelExecutor>

<BuildConfiguration>
    <!-- Enable support for UnrealBuildAccelerator, this is not required but I like pretty graphs. You can technically use this to do builds on multiple pcs at once but I have been too lazy to set that up -->
    <bAllowUBAExecutor>true</bAllowUBAExecutor>

<!--    <bEnableAddressSanitizer>true</bEnableAddressSanitizer>-->
<!-- hyperthread (newer way?) -->
        <bAllCores>true</bAllCores>
</BuildConfiguration>

<UnrealBuildAccelerator>
    <!-- Enable for visualizing UBA's progress (neat) -->
    <bLaunchVisualizer>true</bLaunchVisualizer>
</UnrealBuildAccelerator>

</Configuration>

I removed some clang specific things but to confirm this works you must see this in the build output

Executing up to X processes, one per logical core

one per physical core= not using hyperthreading

Only do this if you have like 2gb of ram per thread... you will need space for other programs to

[wary bison]

im ripping at 3Mbps rn

[heady sparrow]

this is in my appdata but you can have one in the saved directory of your project if it helps to be specific (setting the msvc version globally will make older versions weird)

[heady sparrow]

this is about local memory and not network speeds for the buildconfig thing

[wary bison]

the above section youmean? and yea where would this be included during this process?

[heady sparrow]

this is something you do before building

changing this will force a full rebuild generally so don't do this unless you want to rebuild

[wary bison]

got you, and yea i have not built the project on windows yet, so i imagine i will run into many issues

[heady sparrow]

I think if you don't have enough ram to matter it will not help to hyperthread to be clear (2gb per worker is epic's rule of thumb which I ignore)

[wary bison]

given the project is fully mac based atm*

[wary bison]

i ahve 64gb

ram

[heady sparrow]

that's cool but I am not asking about ram alone

[wary bison]

lmao

16 core?

32 virtual

[heady sparrow]

basically as a rule of thumb you need 2gb per worker

yeah you won't be able to use every core here without hitting the page file with a big IDE open... the good news is you will be fine

I am on a similar build with a 7950x and a full engine build is like... 40 minutes?

so yeah you should be chilling here

you definitely want hyperthreading on here

[wary bison]

ok nice, so is this part of the setup.bat part?

[heady sparrow]

but I would maybe say leave the per action bytes as is for starting out

[heady sparrow]

no

this is buildconfiguration

[wary bison]

cuase this shit is slow af , but again, this is prob just internet speed issue atm

[wary bison]

ok niice, coolio, i got you on that

[heady sparrow]

setup.bat is what gathers a ton of stuff like engine content and random dlls

that aren't in git (at least not directly!)

[wary bison]

shit might take all night at this rate

[heady sparrow]

honestly yeah this might take a while even with decent internet... it's a lot of stuff

downloading I mean

[wary bison]

but very good to know, for the build configs. prob would even be helpful for the mac builds as well, as im sure im building plenty of useless stuff and i plant o rebuild the enigne from source onmjy mac just to have fresh engiens

i wasn't sure if the setup.bat or the generate project files was the longer one, but i guess it's the setup

onet akes like 2 mi

min*

[heady sparrow]

your pc sounds appropriate for building the engine... some people I know go higher for ram but you are chilling on 64gb here. Keep in mind once you compile the whole thing you won't need to recompile EVERYTHING unless you need to for a new target or after changing engine cod etc

or when you accidentally edit actor.h and hit the spacebar

even then worst case you are gone for 30 minutes at this rate for partial builds (~45 for full maybe?). also keep in mind you need like a half terabyte of space for unreal

it will get HUGE with build products

and you need free space for the page file too in windows. Don't touch the page file

[wary bison]

lmao classic, and nice good thoughts. and yes i have 2TB in this rn

[heady sparrow]

I actually do some annoying stuff to manually turn off every engine plugin but I would say it's more annoying than helpful because you have to fix a lot of tiny missing things

2 things are interesting here

• the engine association is URL based! this is good to avoid using a registry key but the defualt setup will just be in the same folder (the professional epic way which I goofed here)
• I disable all engine plugins by default. This is cool because I skip needing to build engine plugins that are enabled by default but also requires enabled a dozen or so plugins that are actually mandatory so honestly I would say don't bother with that one at least not for now

your problems here are going to be internet speed more so than building and space

if you are truly on 3Mbps

[wary bison]

SS is misleading... it's really hovering around 2-3, but somehow snapped it on a whopping 4

[wary bison]

disabling all engine plugins seems like a decent plya but i wouldhave zero idea which im using and which im not by defulat, but good advice for future/packaging later on, probalby lots of useless stuff

we're actually cheffing up to 8mbs rn

[heady sparrow]

I can share what I had to re-enable but I would suggest ignoring that weird setup for now (it's possible I missed stuff too lol)

[wary bison]

big!

i most likely will keep it simple

i will be exstatic if i can get mac project ported over to windows succesfullly

that alone would be a mega win

[heady sparrow]

is the goal here just to deploy a windows build for a dedicated server?

or just well, new pc to build faster

[wary bison]

lmao, yea exaclty

and yes that too

kinda 2 birds 1 stone

[heady sparrow]

I guess you can always use both

[wary bison]

3 birds if you count linux server builds as well

[heady sparrow]

I have never had to deal with mac building at all so I'm clueless

[wary bison]

basically got the windows to build for more poeple, as pretty small group of pople play on mac, and yea needed the server. plus, my mac was built for music, although a beast, not built for game dev btu it did work for me for the last 3 years

[wary bison]

i must be an expert givent hat almost everyone i talk to refuses to believe people use mac's to devellop on

lol, a bit of a joke, but it's beent he biggest pain dealing with devs who act like zero people use macs

[heady sparrow]

way back in the day as a kid with only my mom's imac it was brutal lol... These days people just dual boot into windows on their macs I guess but I think there's more available

I think I would generally not want to be spending time making a windows or linux port but I think it's kind of worthwhile if you don't need to invest a ton in it

I guess with a smaller market there's also less competition so newer games that suddenly work well on linux etc stand out a bit

[wary bison]

ultimatley, im hoping zero things need changed,a s all the code should be compatible, if anything, most things are incompatible with macs, so hoping the mac to windows process is reallyjust getting the correct files in order and just building

only building linux server tho, not really for linux users

[heady sparrow]

it will start to matter more with platform specific code for obvious reasons

FPlatform- interfaces are the sort of generic wrappers unreal uses which are nice

also different compilers have different rules

there should not be too many crazy issues though unless you used some crazy specific platform type

[wary bison]

yea im hopign for the best, but i am prepared for any issues that may arise

i have had a firend build the project about a year ago on there windows and it did build after a few adjustments. was basically just missing certain .dll or .lib files, from it being mac based it just didn't have them in tere, and i had to rebuild the plugins and it was fine

im sure there will be some issues. but im ready. still just cooking on this setup lol

[heady sparrow]

yeah like at worst you might get some "hey, you can't do that in a lambda" style nonsense unless you are getting really weird

[wary bison]

exaclyt, we shall find out in the coming days !!!

[wary bison]

11>EXEC: Warning : Visual Studio 2022 compiler is not a preferred version

what would this error mean? i think i have the correct sdk's etc downloaded but could be wrong

[wary bison]

i got rid of it by downloading a diffetne component from VS, i just clicked a few that were recommeneded

[wary bison]

Fatal error: [File:C:\Users\Default.DESKTOP-E4MJBSK\Documents\UE_Source\Engine\Source\Runtime\RenderCore\Private\RenderingThread.cpp] [Line: 881] Rendering thread exception: Assertion failed: GFrameCounterRenderThread != PreviousFrameCounter [File:C:\Users\Default.DESKTOP-E4MJBSK\Documents\UE_Source\Engine\Source\Runtime\Engine\Private\Rendering\RayTracingGeometryManager.cpp] [Line: 582] FRayTracingGeometryManager::Tick() should only be called once per frame

im geting this error and clients crash. not sure what it could be as im not using ray tracing at all, and specifically have it set to false, but not sure if this is something else ?

[wary bison]

i fixed, sort of... seems like it only happens on windows but it was from a loading sreen which had allow engine tick on, but still not sure why that would have been firing either wya

[wary bison]

0>FilteredBinaryInputArchive.cpp(492,48): Error C4458 : declaration of 'remappedIndices' hides class member 0> UnorderedMap<std::uint16_t, std::uint16_t> remappedIndices{memRes}; 0> ^ 0>AnimatedMapFilter.h(23,52): Reference : see declaration of 'dna::AnimatedMapFilter::remappedIndices' 0> UnorderedMap<std::uint16_t, std::uint16_t> remappedIndices;

im getting a few errors like this while build the engine and im not really sure how tofix them as they are engine plugins , i changed the build config to ignore warninns as errors but this is still happening, not sure hwy

[heady sparrow]

did you fix the earlier wrong msvc version?

11>EXEC: Warning  : Visual Studio 2022 compiler is not a preferred version

this is not a nice thing to ignore. It's one of the most garbage error messages ever because it doesnt describe what version you are on directly (it's not visual studio 2022, it's the actual msvc version)

[wary bison]

yes i think

yes i did that one

[heady sparrow]

are you building with a project?

[wary bison]

yes

i actually already had this building, by setting the build config to ignore warnings as errros but now it doesn't seem to be working

i did rebuild the project tho, and i did have it built and opened etc*

[heady sparrow]

do you actually use the latest build settings in your target?

don't globally ignore warnings

[wary bison]

` Type = TargetType.Editor;

    DefaultBuildSettings = BuildSettingsVersion.V5;
    
    IncludeOrderVersion = EngineIncludeOrderVersion.Latest;

    ExtraModuleNames.AddRange( new string[] { "MAiWORLD_topdownDUP" } );
}

}
`

that's in my target* i copied wrong but you can see the build settigns

[wary bison]

i'ts not actually irngoing warnsins it was to ignore warnsings that show up as errors but the warning still shows, it just builds

this is at least what it did last time i set it, but yea not sure what that even is, do you think it's somethign to do with needing a different component or something installed?

or maybe having too mnay installed...

[heady sparrow]

do you have any build warnings in the opening build logs that have the incorrect windows api being installed etc?

you need to pay attention to the entire build log

[wary bison]

not that i can tell, everything builds excpet that riglogic plugins weird class members thigns

[heady sparrow]

pressing f5 and not seeing red lines is not what I mean here, I mean if it is on the EXACT intended windows api version

[wary bison]

ok wait i do still see the comiler

[heady sparrow]

yeah, don't ignore warnings

read the buildconfig example I showed earlier if you need an example of how to target a specific version

also you must nuke intermediate after fixing the msvc version (unsure if that applies to source builds? I forget)

I might be mixing that up with something else

but yeah never ever ignore the engine saying a version is wrong early on

[wary bison]

ok to be clear, i had the engine already built, and working game was working as it does on mac, and all i did was add the linux toolchain, which forced me to have to rerun setup.bat and generateprojectfile.bat, which most likely was the source of when things "changed". but when i run generateprojectfiles.bat i get no errors or wanring

[heady sparrow]

not what I mean

[wary bison]

the linux server target actually builds

[heady sparrow]

I am talking about building

[wary bison]

building?

[heady sparrow]

it doesn't really matter to me how it got to this state I guess, if it's telling you you have the incorrect msvc version it's not using the intended version

can you show the first few build output logs?

[wary bison]

what is the indeded version?

im on 5.6.1

[heady sparrow]

https://dev.epicgames.com/documentation/en-us/unreal-engine/setting-up-visual-studio-development-environment-for-cplusplus-projects-in-unreal-engine?application_version=5.6

pay attention to the MSVC and Windows SDK versions

you need to use the visual studio installer to find these and most of the time it will just blindly use the latest one anyways

[wary bison]

i will say it doesn't hlep that there are 100 options with arguably the same exact names for these things

but i think i found the one i need, although i did have it set to "laest" but it seems to want a specific version, and the most recent is at the very bottom of the super find waldo looking ahh list

[wary bison]

oh nice the one labeled (out of support) must be!!!!

lmfao so i chose the wrong one

should i also uncheck all the other ones

[heady sparrow]

this tripped up a bunch of people because usually the latest version will work, but this version was a bit behind due to some compiler issues that I have no clue about

[heady sparrow]

you don't need to if you target it specifically in the above example I chose

it honestly is just easier to only have 1 sometimes but if you know what you are doing you can set the version (in the example I showed for this exact reason) (the buildconfiguration.xml)

issue is if you have multiple c++ projects you might need multiple versions

honestly I think the engine is kind of horrible at figuring out the correct one to use and I wish it would say "here's how to override it" if it's using the latest one and another one exists

[wary bison]

im gonna have to rebuild this again.... chirst it's like the 6th time lmao

[wary bison]

yea no this process for windows was actually more difficult than mac

despite what i've been heard befoe

[heady sparrow]

it's rude of me to say but you could not have had to do the first full build if it was stopped at the first warning

to be fair you probably never had to deal with this nonsense on xcode or whatever

you are not the only person who has had to go "wait what? an out of support version?"

[wary bison]

lmao no , it's all good i need to learn the ways of the platform... and dont get me started on xcode, it's the worst of all time

i should probably have just built 5.7 as i will proabably upgrade soon, but i just wanted to feel good about getting the project that i've solely worked on mac for 3 years to build and run and work on windows

which i did have until i built for linux and twisted some thigs up

[heady sparrow]

I think upgrading AND moving platforms would be scary because it would make everything be a bit "is this from the version change or the platform change"

[wary bison]

yea exactly, one obstacle at time for this process

[heady sparrow]

I think you had the right idea sticking on the same version even if it's going to be changed soon... just to confirm it even works the same

[wary bison]

hmmm still seems to say it's wrong version. im assumign this is because i have "latest" checked as well? it's choosing 14.5xxx instead of 14.38

0>Warning: Visual Studio 2022 compiler is not a preferred version

how can i force it to use the other oen?

or do i need to rerun setup.bat / generateprojectfiles.bat again first?

[iron dome]

You can specify the version in the build.cs somehow I believe.

[heady sparrow]

read my messages about this please

[wary bison]

lmao i've read every message, not sure what you are trying to get me to find in this haystack

[wary bison]

you mean that file from like days ago, i completley forgot you send that build config

should i just copy and paste that ? lol

[heady sparrow]

<#engine-source message>

[heady sparrow]

no, read

read the comments

[wary bison]

ok that seems like a solid idea to try (to force the compiler version)

would that be the engine one or the project one?

the build config.xlm one

[heady sparrow]

this is useful for 2 main reasons:

• slightly faster builds with hyperthreading enabled (you still have not posted actual built output so idk if you are using that or not)
• very specific target versions

other misc things like lowering memoery per action to be about ~66% of the normal size but you should honestly consider commenting out memoryperactionbytes unless you are comfortable with how it works already

[heady sparrow]

there is no difference there

it can be from appdata if it finds it there

this is global stuff applied to the whole target

here's an example of how to change the windows sdk version too if you need that from it refusing to use the correct one
(don't put two separate xml bodies in there, this one is from a second buildconfig on my pc from appdata)

<?xml version="1.0" encoding="utf-8" ?>
<Configuration xmlns="https://www.unrealengine.com/BuildConfiguration">
        <WindowsPlatform>
                
                <WindowsSDKVersion>10.0.22621.0</WindowsSDKVersion>
        </WindowsPlatform>
</Configuration>

mine is currently in the project saved dir but that's just because I don't want it applying to all projects on my pc

if you only have 1 project it doesn't matter

[wary bison]

<WindowsPlatform> <CompilerVersion>14.38.33130</CompilerVersion> </WindowsPlatform>

[heady sparrow]

is that the version you installed?

[wary bison]

would that be the correct addtion if i wanted to force that compiler version ?

[heady sparrow]

show the entire thing

this is not the situation where you can get away with hiding the rest of the file and expect me to guess

[wary bison]

<Configuration xmlns="https://www.unrealengine.com/BuildConfiguration">
    <WindowsPlatform>
        <CompilerVersion>14.38.33130</CompilerVersion>
    </WindowsPlatform>
    
    <ParallelExecutor>
        <ProcessorCountMultiplier>2</ProcessorCountMultiplier>
        <bShowCompilationTimes>true</bShowCompilationTimes>
    </ParallelExecutor>

    <BuildConfiguration>
        <bAllCores>true</bAllCores>
        <bWarningsAsErrors>false</bWarningsAsErrors>
    </BuildConfiguration>
</Configuration>```

[heady sparrow]

If it helps you can move bWarningsAsErrors to be in your target

this fiddly ini is technically just writing fields in a c# class in ubt that your target also can write

I would say remove bWarningsAsErrors but that's up to you, this looks okay to me

[wary bison]

im still waiting for vs to finish it's last install (i have mega slow download speed rn)

[wary bison]

ok, if it compiles correctly, i'd have no issue removing, but if that issue is still there i really wouldn't know what else tod o

ok so now im going to wait for 30 min (not terrible)... cause it's rebuildign the whole thing

https://tenor.com/view/new-york-sad-collapse-gif-20701224

the plugin that was giving the issue is some random plugin i'd never use too... windows is cheeks!!!!!!!!!!!

good news so far is that "i dont likey this compilerer, pick a newski one plee plee" is gone

[wary bison]

update that worked (aka it built successfully)

Plugin 'GeometryScripting' failed to load because module 'GeometryScriptingCore' could not be loaded. There may be an operating system error or the module may not be properly set up.

ok this is the issue i had before this, i got a warning saying that windows secutiyt blocked part of the editor, and then labeled a .dll file that most likley is related to this plugin, and it crashes the editor

basically, it builds now, but the editor crashes before it opens

i added my project folder to the exclusions for the windows defender, that worked (so far)

[heady sparrow]

nuke the binaries for that plugin

you probably had a build cancel mid link

[wary bison]

that's a good idea for next time, it just opened, so the adding of my project folder helped, i think it was changing the .dll file on demand of the launch on the first time and flagged it for a threat

changing it from it's old one (with the other compiler i guess)

[heady sparrow]

I am not referring to the security issue

that is a somewhat rare but annoying issue with binaries not being dirtied if you cancel a build

a build being cancelled just yeets the process, there is no graceful end state afaik

[wary bison]

that makes sense. i just hope i dont have to rebuild the full thing again lol

Running AutomationTool...
Using bundled DotNet SDK version: 8.0.300 win-x64
Building UnrealBuildTool...
C:\Users\Default.DESKTOP-E4MJBSK\Documents\UE_Source\Engine\Source\Programs\Shared\EpicGames.MsBuild\EpicGames.MsBuild.csproj : warning NU1903: Package 'Microsoft.Build' 17.11.4 has a known high severity vulnerability, https://github.com/advisories/GHSA-w3q9-fxm7-j8fq [C:\Users\Default.DESKTOP-E4MJBSK\Documents\UE_Source\Engine\Source\Programs\UnrealBuildTool\UnrealBuildTool.csproj]
C:\Users\Default.DESKTOP-E4MJBSK\Documents\UE_Source\Engine\Source\Programs\Shared\EpicGames.MsBuild\EpicGames.MsBuild.csproj : warning NU1903: Package 'Microsoft.Build' 17.11.4 has a known high severity vulnerability, https://github.com/advisories/GHSA-w3q9-fxm7-j8fq

Build succeeded.

any idea what to do about this ? this i actually the server log when the game launches

game still runs fine, but this seems slightly concerning

[heady sparrow]

shameful amendment: No you do not actually need LFS for ue5-main... I have no clue how I got this mixed up

every project I have worked on with unreal and git has used lfs so I must have crossed the wires there

[wary bison]

ok im ready to off myself no capskis.... so i've "successfully" built windows like probably 3 or 4 times now (i have hardly slept in the last few days) and after success the last time, i decided to move forward and get the linux toolchain and build the linux server. that worked, BUT it casued pretty much everything else to seeminly break. im having loglinker issues with random plugins, my turnkey fails to run, and i honestly have no idea what to do on windows to attempt to fix any of these thigns. the difficulty is that there are so many potential areas of problem, like "was it the tool chain" "was it the addtion of linux", "is it just casue windows is ass and mac is better" im baffled, and im heated

[wary bison]

Lol. To update the above I’ve successfully quelled all issues that stopped me from being the greatest of all time but iAM in fact the greatest of all time. What was the issue? I don’t know I just rebuilt it all from scratch and was particular about all the windows stuff like the security stuff so all the files would not be rejected. All that nonsense. But it’s goodly now in case anyone was stressing while reading that

[mighty gull]

Which branch should i PR against? It seems to be either ue5-main or release(looking at PRs) and the Contribution doc page also says release, so.. release?

[smoky goblet]

PR's should always be against ue5-main per the readme section on contributions.

[mighty gull]

oh, i havent thought about reading readme.. ive read https://dev.epicgames.com/documentation/en-us/unreal-engine/contributing-to-the-unreal-engine which seems outdated then:P

thank you

[smoky goblet]

Or they're using the word in a different way, as ue5-main is the most recent "release" because it's the live trunk and not a versioned release.
Or written by a different person that doesn't understand how the git is set up. Or it hasn't been updated from some previous setup.
🤷
ue5-main is definitely what you want to do PR's against.

[mighty gull]

I couldn't have picked a better change for my first PR, a literal one symbol
https://github.com/EpicGames/UnrealEngine/pull/14465/changes

thanks again for the notes!

[last anvil]

In an effort to try and get my installed build size down for some folks I started generating a build that strips the pdb files before packaging the installed build. I was wondering what steps are necassary to "utilize" the pdb files that have been stripped out if I want to conditionally distribute them later.

As an example I noticed the editor builds unreal distributes ship wtih FAB pdbs and pdbs for UnrealGame UnrealGame-Development and UnrealGame-Shipping.

Can I replicate that by simply placing the pdb files from Saved next to their dll files in the LocalBuild?

[karmic cloak]

by "utilize" you mean decode callstacks after a crash/ensure or what woud you want to utilze them for?

[last anvil]

Yes primarily to decode callstacks. I ended up just generating a build with stripped pdb files and then a build without pdb files for folks that don't code at all. Even the debuggable build landed at sub 100G so I'm pretty happy with this.

[urban breach]

Hello good people :) I'm looking for some help regarding umaps and unreal version compatibility.

I copied an Unreal project file which I'm working on from one computer to another. Computer 1 has UE 5.5.3 and computer 2 has UE 5.5.0. Computer 1 has Houdini and Houdini Engine installed while 2 does not.
I have a level in my Unreal File named X which contains assets which were created using a Houdini Digital Asset (HDA) and some assets which have been baked into instanced static mesh components from that HDA.

Upon opening the unreal file using the 5.5.0 editor on computer 2 - the Level X does not appear in the content browser and cannot be opened despite X.umap being in the content folder directory.

Could someone please help me to figure out what could be happening and whether a small version mismatch 5.5.3 -> 5.5.0 could really break levels like this.

[hidden hedge]

Assets (including levels) saved with a later engine version cannot be opened in a previous version.

This seems like a weird setup though

[urban breach]

Ahh understood thanks for the insight.

yeah I agree it's a weird setup - IT and software support at my workplace is quite dodgy

[dusky compass]

That's odd, they should be compatible between patch versions 🤔

[frigid basin]

I'm trying to make a state tree property function. it's simple enough except that whenever i add it to a property the editor starts snapping that property closed every frame. I've tracked it down to PropertyNode.cpp in the EnsureDataIsValid() function, the node in question is confused about how many children it has and thinks it has to rebuild, but then rebuilding the children doesn't actually create the right about of children somehow apparently and so it's constantly marking the property node as invalid adn rebuilding. I don't look into this area of code very often, does anyone know what i should be looking at?

[frigid basin]

i'm pretty convinced at this point it's a state tree bug

[toxic spear]

Hi all,
I am new to Unreal and to this forum, please let me know if there is a better channel for this question:
I am getting Unreal crash (Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x000000000000a474) when I am Baking my Houdini HDA.
My HDA has two outputs - heightfield (Landscape) and geo as packed prims (multipe staticMeshComponents).
If I output only heightfield, Bake works fine
If I output only geo as multiple component, Bake works fine
If I output only geo as one component, Bake works fine
If I output geo as one component and heightfield, Bake works fine
If I output geo as multiple components and heightfield, Unreal crashes
I am attaching my test HDA.
Any ideas on what's causing it?

[dusky compass]

You need o build debug build with debug symbols and well, debug it

[smoky quarry]

hey guys, quick question.
I'm using rider 2025.3.3 and I'm on a test project (for USD) that uses the source engine cloned from the github.
But as I'm having issues with USD working at runtime, I want to add logs inside some methods.
But those methods are inside files inside the USD plugin, so source files.

Rider prevente me from modyfying the file saying "File is part of Unreal Engine"
Does anyone know how I can by-pass this so I can write in the file ?
I don't know if it's rider specific or the engine source itself

[smoky quarry]

never mind......

i just found it

a good night's sleep and I found it almost instantly.... (i didn't find it yesterday...)

here in rider's settings

[dusky compass]

They added read-only mode finally after 783 years? amazing

[hidden hedge]

That's existed for ages

And it prompts by default

[smoky quarry]

it prompts to enable modification on source file ?

i didn't get any prompt for this

it said "File is part of Unreal Engine"

but didn"t prompt anything

[smoky quarry]

had to disable this for me to modify

[hidden hedge]

It does the very first time. Your screenshot even shows that "Do not show Unreal Engine read only mode dialog again" so you dismissed at some point in the past

[smoky quarry]

ah.... 😅