#engine-source | Unreal Source | Page 41

unreal oar Aug 8, 2020, 12:57 AM

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After changing one line it now just takes just over a Minute!

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Phew

arctic spear Aug 8, 2020, 10:29 AM

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Any way to download plugins from the launcher withouth having to install the precompiled UE version?

modest glade Aug 8, 2020, 10:40 PM

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Any audio programmers in here? I swear I've just found a bug in some audio code. Runtime\SignalProcessing\Public\SampleBuffer.h line 485-486, surely that doesn't work.

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I've been using it to sample an audio buffer at fractional indices, but couldn't work out why playback was both slow and mixing both channels. I think the line should be SampleA = RawPCMData[(WholeThisIndex * NumChannels) + i].

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Yep, that definitely fixes the problem. Guess I should submit a pull request, if that's possible?

modest glade Aug 8, 2020, 11:35 PM

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Done (https://github.com/EpicGames/UnrealEngine/pull/7248)

stable hemlock Aug 9, 2020, 2:59 AM

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@arctic spear I was looking for a solution to this. I've always had to download precompiled versions and move them from the Plugins folder to my source built engine Plugins folder. If you manage to find this out let me know please!

formal flower Aug 9, 2020, 3:54 AM

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Having problems compiling 4.25.3 in VS2017. Wondering if I should use the latest toolchain (available in VS2019).

Do the setup instructions here (https://docs.unrealengine.com/en-US/Programming/Development/VisualStudioSetup/index.html) comply with 2019? (the page simply says it also supports 2019, but it doesn't seem to contain any 2019-centric settings)

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In short, I'm curious as to what VS version (VS2017 or VS2019) most UE4 users are using with the latest versions of the engine.

stable hemlock Aug 9, 2020, 4:13 AM

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@formal flower Hi. I had an issue with 4.25.3 and vs 2017. I upgraded to vs 2019 for this version of unreal and had 0 compile errors or packaging errors.

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if you study the bottom of the chart they mention 2019 is okay.

📎 unknown.png

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  [4027/4028] UE4Editor-UnrealEd.dll
     Creating library F:\unreal\src\UnrealEngine-4.25.3-release\Engine\Intermediate\Build\Win64\UE4Editor\Development\UnrealEd\UE4Editor-UnrealEd.suppressed.lib and object F:\unreal\src\UnrealEngine-4.25.3-release\Engine\Intermediate\Build\Win64\UE4Editor\Development\UnrealEd\UE4Editor-UnrealEd.suppressed.exp
  [4028/4028] UE4Editor.target
Total time in Parallel executor: 2164.15 seconds
Total execution time: 2395.86 seconds

build worked eventually.

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I will also suffix this by saying I DID have issues with using vs 2017 to build my games before, because I have a dedicated server. Epic has since fixed these issues with their latest version. The change happened in 4.25.3 specifically for me. I used vs 2017 up to 4.25.2.

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So I'm no longer relegated to VS 2017 as of now.

formal flower Aug 9, 2020, 4:16 AM

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interesting.
Did you uninstall vs2017? i installed vs2019 with 2017 still in place.

stable hemlock Aug 9, 2020, 4:17 AM

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@formal flower On a good faith effort to cycle visual studio, I did do this yes. I uninstalled vs 2017 using chocolatey because that is how i install most cyclic things on windows. and installed vs 2019 this way too, using choco install visualstudio2019community

Might want to keep visual studio 2017 in case you need it for something else. But I did flush it out.

formal flower Aug 9, 2020, 4:20 AM

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really appreciate the info @stable hemlock . thanks!! I'll give it a go with vs2017 installed. if that doesn't work, I'll re-set it up clean. Good thing is I don't really need 2017.

stable hemlock Aug 9, 2020, 4:21 AM

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@formal flower ```bat
set ENGINEVERSION=4.25.3
set DRIVE=F

git clone https://github.com/EpicGames/UnrealEngine.git --branch %ENGINEVERSION%-release %DRIVE%:\unreal\src\UnrealEngine-%ENGINEVERSION%-release --quiet --progress

call "%DRIVE%:\unreal\src\UnrealEngine-%ENGINEVERSION%-release\setup.bat"

call "%DRIVE%:\unreal\src\UnrealEngine-%ENGINEVERSION%-release\GenerateProjectFiles.bat"

::BUILD UNREAL SOURCE

call "%DRIVE%:\unreal\src\UnrealEngine-%ENGINEVERSION%-release\Engine\Build\BatchFiles\Build.bat" -Target="ShaderCompileWorker Win64 Development" -Target="UE4Editor Win64 Development" -Target="UnrealLightmass Win64 Development" -WaitMutex -FromMsBuild

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I really enjoy using automation in batch scripts to download the latest version of the engine, so I usually use those for builds.

arctic spear Aug 9, 2020, 12:06 PM

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@arctic spear I was looking for a solution to this. I've always had to download precompiled versions and move them from the Plugins folder to my source built engine Plugins folder. If you manage to find this out let me know please!
@stable hemlock Unfortunately I didn't found any other solution, but at least I found that after installing the engine from the launcher you can delete all the folders inside its root apart ".egstore" and you can still download plugins. It will create the Plugins/Marketplace/<plugin> folder

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Also, when installing you can deselect all the options to reduce the download size

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it's ok to build 4.25 with VS2017 or should I go with VS2019?

manic kite Aug 9, 2020, 12:16 PM

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No.

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It requires VS2019.

arctic spear Aug 9, 2020, 12:17 PM

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Ok, thanks guys

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But on github it still says to use 2017, little confusing XD

elder falcon Aug 9, 2020, 12:44 PM

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Oof

📎 unknown.png

formal flower Aug 9, 2020, 1:32 PM

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my custom fork (that initially compiled fine on VS2017 when I merged 4.25.1 into it) kept failing to compile when I merged the 4.25.2/3 changes into it.

Installed VS2019 (alongside VS2017), updated it, set it up with Epic's recommended settings, and it compiled first time. Thx @stable hemlock . (I saved out your build bat for later use, really appreciate it!)

stable hemlock Aug 9, 2020, 9:14 PM

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cool

leaden nova Aug 10, 2020, 6:16 PM

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how hard would it be to add functionality to transform class ? Or maybe create a subclass of transform and can that be in a plugin ?

dusky zinc Aug 10, 2020, 6:53 PM

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anyone else not able to compile 4.25 with the houdini Niagara plugin from github?

barren stratus Aug 10, 2020, 9:03 PM

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Not sure if this is the right place to ask, but seems close... Where can I find detailed instructions on how to connect VS to symbols for UE4 to catch crashes in the engine? I've been getting a lot of editor crashes and want to see if it's in an area I'm doing something stupid or not. I'm working in BP only, but figure I can at least get an idea what's causing the issue, but can't connect it properly. Thanks

ripe bluff Aug 11, 2020, 4:21 AM

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How do I go about building the engine with the cross-compile toolchain for linux included? I want to be able to cross compile from windows for linux. I've downloaded the proper toolchain from here: https://docs.unrealengine.com/en-US/Platforms/Linux/GettingStarted/index.html, I just don't know how to make sure the engine source is built so that linux is a target platform.
EDIT: Rebuilt engine from source after installing xcompile toolchain, all good now.

stoic crane Aug 11, 2020, 11:16 AM

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so uhh, does anbybody know how to make pakfile chunks actually work in 4.25? Switching from 4.24 -> 4.25 chunks will not build. no changes in settings, chunks are enabled, asset labels are in place, etc.

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no matter what settings, it just refuses to make more than pakchunk0

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(been using chunking on this and another project for ages, but switched to 4.25 because of a bug fix, and now the chunks just don't work anymore)

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i guess asset labels are broken.

keen wedge Aug 11, 2020, 2:49 PM

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Does anyone have any good tutorials about implementing a custom render pass?

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i'm trying to do a custom post processing pass

serene yew Aug 11, 2020, 10:03 PM

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It is safe to delete the default ${Your project name}GameModeBase class that UE generates for you in a fresh C++ project, right? Why do they provide that for you?

spiral mortar Aug 11, 2020, 10:37 PM

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it's totally safe. For convenience I guess?

serene yew Aug 12, 2020, 1:38 AM

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In theory... more like for inconvenience in practice

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What does the predefined "Generate Project Files" build target do? When do I need to built that target?

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I googled for 'ue4 "generate project files" build target' and nothing related to that came up (only got back results concerning generating the project's IDE files but not about the build target)

serene yew Aug 12, 2020, 2:08 AM

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@spiral mortar If I do delete both the header and cpp files for ${ProjectName}GameModeBase, should I also remove the following line from Config/DefaultEngine.ini (I hadn't touched the config files myself, so this line was generated by UE at some point):
+ActiveClassRedirects=(OldClassName="TP_BlankGameModeBase",NewClassName="${ProjectName}GameModeBase")
(where ${ProjectName} is of course substituted for the actual project name, even for the ini file string)

spiral mortar Aug 12, 2020, 2:08 AM

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uh

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I guess

serene yew Aug 12, 2020, 2:08 AM

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lol

stable hemlock Aug 12, 2020, 2:08 AM

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@stable hemlock

serene yew Aug 12, 2020, 2:08 AM

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k

serene yew Aug 12, 2020, 2:36 AM

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Anyone here use Visual Studio Code (not regular Visual Studio, but Visual Studio Code; it's a totally different thing) as their IDE? For some reason mine will be working fine, then one day I go into it and while everything still works fine, the Settings page for the IDE is just completely blank (like it can't find/read whatever config file vscode uses, maybe). Anyone else ever experience this?

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I've googled for it in every way I can think of, but can't seem to find much about it

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nvm I think I finally found something

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https://stackoverflow.com/questions/55434687/vscode-settings-json-is-missing

Stack Overflow

VSCode Settings.json is missing

I'm following a tutorial and I'm trying to point vscode to my virtual workspace I had set up for Scrapy, but when I open settings in VSCode, Workspace Settings tab is not there next to User Setting...

serene yew Aug 12, 2020, 3:26 AM

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Got it. There was no User-level settings.json file where the vscode docs said it would be (I'm on a Mac): /Library/Application Support/Code/User/settings.json and in fact the directory /Library/Application Support/Code didn't even exist

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I tried creating it, changed the permissions correctly 755 for dirs, 644 for the file itself, and used the vscode docs description of the default settings file and pasted it in there, still no luck

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Then, after reading that vscode gets its Workspace-level settings from the .vscode/settings.json file in your workspace's root dir, I tried closing it down and launching it from the Finder, navigating to my UE project dir and opened vscode directly from the project's ${ProjectName}.code-workspace file and the settings reappeared 🙂

nocturne compass Aug 12, 2020, 3:25 PM

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when you set the buildid for the engine you're building from source does anyone know if the correct syntax is
"BuildId": "d38b46b7-3f56-4a3d-8051-d8c87ee6271c"
or
"BuildId": "{d38b46b7-3f56-4a3d-8051-d8c87ee6271c}"

unreal oar Aug 12, 2020, 5:00 PM

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How do I define my own brush for FEditorStyle::GetBrush()?

short quarry Aug 12, 2020, 5:55 PM

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when you set the buildid for the engine you're building from source does anyone know if the correct syntax is
"BuildId": "d38b46b7-3f56-4a3d-8051-d8c87ee6271c"
or
"BuildId": "{d38b46b7-3f56-4a3d-8051-d8c87ee6271c}"
@nocturne compass The last one is correct. https://docs.unrealengine.com/en-US/API/Runtime/Core/Modules/FBuildVersion/BuildId/index.html (In code it is different: https://docs.unrealengine.com/en-US/API/Runtime/Core/Modules/FBuildVersion/index.html)

nocturne compass Aug 12, 2020, 5:56 PM

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oh! Thank you so much ❤️

short quarry Aug 12, 2020, 5:56 PM

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However, you could select your build when right clicking a project and select the unreal engine version.

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Then the engine will set the correct version without any mistakes.

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Just right click on the project and select version and browse for your version.

nocturne compass Aug 12, 2020, 5:57 PM

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thank you 😄

marble rune Aug 13, 2020, 2:10 AM

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Anyone using VS2019 16.7.1 and 4.25.3, having issues with Datasmith's PostBuild-1.bat file complaining it can't find xcopy? Building 2 times in a row seems to resolve it, just odd.

stoic crane Aug 13, 2020, 1:29 PM

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you can use anything you want for the Id also. just edit the registry and set a friendly name, or make a tool to update the registry to a friendly name.

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mine are all like UE4_MYCOMPANY_4xxx where the xxx depends on the version of installed build, source uses _SRC,
ie: UE4_MYCOMPANY_4250

misty palm Aug 13, 2020, 5:03 PM

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What is the best way to share a source build with your team without them having to build it themselves aswell? I was looking at UGS but its perforce only, we are using Plastic SCM

stoic crane Aug 13, 2020, 5:50 PM

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i do it by making installed builds (like the epic launcher)

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so everyone else runs custom binary, and only i use the source

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well, or anyone that needs to buildf rom source.

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faster for teh artists too, since they get the DDC, and don't have to compile anything except projects.

misty palm Aug 13, 2020, 6:03 PM

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@stoic crane Thanks! I'll look into that then 😄

cosmic pulsar Aug 13, 2020, 8:21 PM

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Anyone seen this from using PhysX MBP Broadphase?

📎 3a1288df9199d1e50d8f46a24ffec2ab.png

signal epoch Aug 13, 2020, 9:51 PM

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i need help please i cant lunch ue4 with visual stidios

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📎 unknown.png

ornate fjord Aug 14, 2020, 8:06 AM

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I have a strange issue, I have a perfectly fine working source build on my pc

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from a 4.25 fork

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I pushed it to my own repo, and cloned it on a different pc

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but it somehow has missing files

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like images

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making it fail to generate project files for xbox

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I guess it's just not pushing those images, but I don't know why

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cause I don't think png's are in the ignore file

frigid epoch Aug 14, 2020, 12:26 PM

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Is it normal that saving updated reflection captures on an engine built from source doesn't work?

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@ornate fjord are you using github repository?

ornate fjord Aug 14, 2020, 12:27 PM

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yes

frigid epoch Aug 14, 2020, 12:28 PM

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and did you make a lot of changes?

ornate fjord Aug 14, 2020, 12:28 PM

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only like 4 files

frigid epoch Aug 14, 2020, 12:28 PM

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Did you first forked Unreal's repository on yours?

ornate fjord Aug 14, 2020, 12:28 PM

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yes I did

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the weird thing is, when I make a binary build from the source build on my own pc, it also is missing those files

frigid epoch Aug 14, 2020, 12:29 PM

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then you'd better change that first

ornate fjord Aug 14, 2020, 12:29 PM

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I would if I knew how lol

frigid epoch Aug 14, 2020, 12:29 PM

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Do you know where your files are missing?

ornate fjord Aug 14, 2020, 12:30 PM

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I know a few

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but I don't know what others might be missing

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that's the big problem

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otherwise I'd just copy paste them

frigid epoch Aug 14, 2020, 12:30 PM

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Also did you have to change the files couldn't you just use an editor module and override class methods there?

stoic crane Aug 14, 2020, 12:32 PM

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binaries/dotnet/gitdependencies.exe

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run that, like the setup script does.

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or.. just run setup.bat on the otehr pc.

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git only has the source code. not all the dependencies like icons, and content, and shared third party binaries.

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setup.bat registers a hook, so whenever you pull it runs gitdependencies.exe, as well as.. runs it the first itme

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well when you recieve a change, from a pull.

signal epoch Aug 14, 2020, 5:21 PM

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please i need help

stoic crane Aug 14, 2020, 5:50 PM

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where did you download from?

fading venture Aug 14, 2020, 6:02 PM

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Morning! How do we track memory used by third party libraries in ue4?

📎 unknown.png

stable hemlock Aug 14, 2020, 7:48 PM

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tag them manually

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https://docs.unrealengine.com/en-US/Programming/Development/Tools/LowLevelMemoryTracker/index.html

Low-Level Memory Tracker

Going over how to use the Low-Level Memory Tracker in your Unreal Engine projects.

grizzled breach Aug 15, 2020, 6:20 PM

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When I go off the master branch I have no engine folder in source

grizzled breach Aug 15, 2020, 6:53 PM

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How to contribute to source for Hololens 2?

stoic crane Aug 16, 2020, 12:23 AM

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Anyone know what might be going on here? Error when starting the game, never happens in PIE, sometimes happens when launching with DebugGame build target or running the cooked/exported game (maybe 50% of the time?)

The actual place where it dies fatally (but presumably stuff has gone wrong before then) is LandscapeRender.cpp line 2397:
check(!bCurrentRequiresAdjacencyInformation || (bCurrentRequiresAdjacencyInformation && SharedBuffers->AdjacencyIndexBuffers));

This is in 4.25
@latent ferry did you ever find a solution for this? Updated one of my projects to 4.25 and have this in cooked build with any map that has landscape, even ones that haven't been touched / modified.

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(and the check doesn't fail, it's dereferencing the AdjacencyIndexBuffers further down (line 2424) that is the crash)

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Unhandled exception thrown: read access violation. this->SharedBuffers->AdjacencyIndexBuffers was nullptr.

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ahw ait im shipping, so the check can't fail.

latent ferry Aug 16, 2020, 12:41 AM

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Yes I found the solution

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Somehow a landscape got corrupted, and any time I make a new landscape in the same level, it triggers the crash

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the solution is to move all other landscapes to a level different from the corrupted one

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Or maybe destroy/remake the corrupted one

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it's really annoying to find the corrupted one because the problem goes away when the new landscape gets deleted

stoic crane Aug 16, 2020, 12:42 AM

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this is weird, because the only change was going from 4.24 -> 4.25

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and every map with landscape, even without modifying from before, crashes on load

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with zero changes

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but only in shipping. even with a full clean cook (saved killed)

normal isle Aug 16, 2020, 2:22 AM

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Does anyone know how bad engine build times are on an average 7200 RPM HDD vs SSD?

marble rune Aug 16, 2020, 2:32 AM

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I tried building on a spare pc, Intel Q3300 and a WD Blue HDD, I gave up after 72 hrs and integrated FASTBuild into my source.

elder falcon Aug 16, 2020, 2:51 AM

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building from an obsolete disk is not usable

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get a nvme ssd instead

marble rune Aug 16, 2020, 2:57 AM

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Indeed, a modern 18c CPU and a recent nvme can build in 10-30 minutes.

normal isle Aug 16, 2020, 3:09 AM

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Okay well assuming I can't upgrade to an NVMe SSD currently 😅

latent ferry Aug 16, 2020, 3:18 AM

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@stoic crane Exactly the same thing as I experienced. Only in shipping. It was hell to figure it out. I had to keep deleting landscapes and cooking (and even then it would only crash some fraction of the time, but it would always keep crashing once it had crashed once)

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If you are pulling your hair out trying to deal with it then DM me

stoic crane Aug 16, 2020, 3:22 AM

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i fixed it

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just had to delete the builtdata

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and re-bake lighting

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deleted built data, cooked and tested, no crash. rebuild, save, cook again, no crash.

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now to build for the other maps.

gritty thistle Aug 16, 2020, 4:38 AM

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Anyone know where the 'make awesome AI' button is?

whole ether Aug 16, 2020, 8:30 PM

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Guys I need help adding a custom module to my source build. I already created a folder in the Editor source folder with the CustomModule.Build.cs and CustomModule.h and .cpp. Also implemented the IModuleInterface.
Everything compiles just fine, but my module does not start... Did I miss something?

tulip girder Aug 17, 2020, 3:04 AM

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Good day guys, does anyone knows the difference between the branch "Release" and "4.25" on git? both are 4.25.3 (apparently) but they seem to have different commits.

quick mica Aug 17, 2020, 9:07 AM

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Release is always the latest release, so 4.26 will also be pushed there one day. So if you just want to latest engine, go release, if you want latest for a specific version, choose the branch of the specific version,

limber heath Aug 17, 2020, 12:32 PM

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Hey guys, this is not directly related to the source code but for sure it's related on how the PCH files are generated, feel free to delete the message from here if you feel it doesn't fit. Im having an issue while trying to compile my project against android. I do have Cpp17 enabled (I changed the UnrealBuildTool) and read somewhere that I should also use PCH files. I get rid of a lot of problems but still this one remains:

GameplayAbilityBase.cpp [armv7]
LogPlayLevel: Error: error: C++17 was disabled in PCH file but is currently enabled

It's happening for a bunch of files. What Im trying to do is to set the includes in PCH file (the one that is pointed in my build). But Im just not sure if that will do the trick. Did anyone faced a similar issue?

limber heath Aug 17, 2020, 1:26 PM

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I "fixed it" by setting PCHUsage = PCHUsageMode.NoPCHs; Of course compile times now are huge. But I guess I can toogle it while developing

blissful bramble Aug 17, 2020, 5:03 PM

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I'm getting this when I run GenerateProjectFiles.bat:

Setting up Unreal Engine 4 project files...
WARNING: C:\Users\ADMIN\AppData\Roaming\Unreal Engine\UnrealBuildTool\BuildConfiguration.xml(8): The element 'Configuration' in namespace 'https://www.unrealengine.com/BuildConfiguration' has invalid child element 'BuildMode' in namespace 'https://www.unrealengine.com/BuildConfiguration'. List of possible elements expected: 'EddieProjectFileGenerator, WindowsPlatform, VCMacProjectFileGenerator, VSCodeProjectFileGenerator, CodeLiteGenerator, KDevelopGenerator, HTML5Platform, RemoteToolChain, QMakefileGenerator, XcodeProjectFileGenerator, SNDBS, CMakefileGenerator, WindowsTargetRules, UEBuildConfiguration, ProjectFileGenerator, SourceFileWorkingSet, VCProjectFileGenerator, IOSToolChain, CLionGenerator, MakefileGenerator' in namespace 'https://www.unrealengine.com/BuildConfiguration'.
ERROR: UnrealBuildTool Exception: System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
          at System.ThrowHelper.ThrowKeyNotFoundException()
          at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
          at UnrealBuildTool.XmlConfig.TryReadFile(FileReference Location, Dictionary`2 CategoryToFields, Dictionary`2 TypeToValues, XmlSchema Schema) in D:\UE4\UnrealEngine\Engine\Source\Programs\UnrealBuildTool\System\XmlConfig.cs:line 529
          at UnrealBuildTool.XmlConfig.ReadConfigFiles() in D:\UE4\UnrealEngine\Engine\Source\Programs\UnrealBuildTool\System\XmlConfig.cs:line 101
          at UnrealBuildTool.UnrealBuildTool.GuardedMain(String[] Arguments) in D:\UE4\UnrealEngine\Engine\Source\Programs\UnrealBuildTool\UnrealBuildTool.cs:line 517

GenerateProjectFiles ERROR: UnrealBuildTool was unable to generate project files.

Press any key to continue . . .

I already have another custom unreal version on my computer, can it cause the problem?

blissful bramble Aug 17, 2020, 5:29 PM

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Just deleted the other versions and it didn't fix the error. I tried looking at the error's C# files but I still don't understand which key is missing.

blissful bramble Aug 18, 2020, 5:56 AM

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I found the problem: My global BuildConfiguration.xml in %appdata% wasn't compatible with the engine version I'm working with.

nimble linden Aug 19, 2020, 2:28 AM

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Is new Chaos goodness supposed to work off the release branch (after changes to the build script from the guide)? A freshly built editor hangs during loading for me...

teal plinth Aug 19, 2020, 3:45 AM

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on a fresh windows install i copied a source version of ue4 and a game/project from another disk, the build of the project succeeded but I'm getting this error

📎 unknown.png

nimble linden Aug 19, 2020, 6:07 AM

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You need DirectX installed

blissful bramble Aug 19, 2020, 6:35 AM

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Does anyone know how to change the shadow color with Deferred Shading?

brazen river Aug 19, 2020, 7:58 AM

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Anyone know how long it takes for epic to respond to a pull request? Just made my first one

spiral mortar Aug 19, 2020, 8:53 AM

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1 week to 5 years @brazen river

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Got a link to the PR?

teal plinth Aug 19, 2020, 12:31 PM

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but dxdiag tells I have directx12...

📎 unknown.png

teal plinth Aug 19, 2020, 12:59 PM

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https://answers.microsoft.com/en-us/windows/forum/windows_8-performance/how-to-fix-xinput13dll-missing/b73c5fb8-12b6-493f-bc90-e8cc76fb842b
So many weird answers to this problem, this fixed my issue

How to Fix Xinput1_3.dll missing?

I'm fed up of this error. Someone told me that it's a DirectX error. So I uninstalled DirectX from my computer and reinstalled it back. It was worthless effort as the error persisted. I also checked

storm geyser Aug 19, 2020, 3:13 PM

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Anyone familiar with nvidia gamework flex's integration? Are there any documents about the integration work itself? I am quite struggle to get a clear view of this plugin.🤔

storm geyser Aug 19, 2020, 3:43 PM

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I change the 'container template' property in staticmesh editor and expect the first call of 'UpdateFlexPreviewComponent' would be from 'OnObjectPropertyChanged' or something like that but instead this 'previewupdate' function is called from external code.🤔

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📎 Expect.PNG

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📎 Expect1.PNG

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📎 Expect2.PNG

brazen river Aug 19, 2020, 6:33 PM

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@spiral mortar https://github.com/EpicGames/UnrealEngine/pull/7270

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late response 😂

olive basin Aug 20, 2020, 8:58 AM

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anyone building on an intel 18-core? how long does it take?

elder falcon Aug 20, 2020, 10:17 AM

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why would you want a massively expensive 18 core intel instead of a 16 core ryzen that costs much less and is faster?

thick storm Aug 20, 2020, 12:39 PM

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16 core ryzen is going to be starved on memory

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not taht intel is going to be any better

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16+ cores you need Threadripper with 4 memory channels

spice terrace Aug 20, 2020, 12:43 PM

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On my 3950x engine builts in roughly 20 minutes, I’d go with a threadripper for sure if i could run macos on it. The biggest selling point for me was pcie4.0. Engine building tests can probably be found on pugetsystems blog

stoic crane Aug 20, 2020, 1:16 PM

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my threadripper 3990x only takes like 6-7 minutes less than my 3900x

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probably need a faster ssd.

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lol

thick storm Aug 20, 2020, 1:22 PM

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nah

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you bound on memory

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on 3960x i build in about 5-6 minutes

stoic crane Aug 20, 2020, 1:30 PM

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i should time it next time.

cosmic stump Aug 20, 2020, 4:44 PM

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last night I saw this one https://issues.unrealengine.com/issue/UE-38597 resurfaced in 4.25.x

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someone checked the code and said the funtionality for haptics is all there, but the code exposing stuff to UI is not

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does anyone have an ide how to fix this? (to make haptic assets to show up in Miscellaneous menu when right clicking in the Content Browser)

peak zinc Aug 20, 2020, 5:12 PM

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is there any way to expand a Spline component node without modifying the source? i want it to have more data than just position/rotation, etc etc

olive basin Aug 20, 2020, 9:06 PM

#

Yes, I'm thinking about how to speed up. Currently using a 3950X and 128GB, but I'm starved on SSD space on a normal platform.
I'd like to go HEDT for memory bandwidth and core bump could help.
3990X is way too expensive so late into 2020 and probably 4990X or I at least think so.
Intel is about $900, which is a cheapest HEDT I'd consider - 3960X and 3970X are much more.
Can you guys post your times?
For example, my friend's 10900K builds in about 22 minutes and my 3950X builds in about 17 minutes (10 vs 16) which shows Intel's frequency counts for a few more cores.

spiral mortar Aug 20, 2020, 9:09 PM

#

I'd be extremely careful when comparing build times to use the same exact settings

olive basin Aug 20, 2020, 9:10 PM

#

Identical, replicated settings and project 🙂

#

And the engine is the easiest part. The game, oh, the game. A full rebuild is about double the time and then packaging takes even more.

spiral mortar Aug 20, 2020, 9:19 PM

#

damn

swift lark Aug 20, 2020, 9:22 PM

#

i built ue4.25.3 from source, switched my unreal engine version to that one and now my project doesn't load my plugins anymore. Im supposed to download them from the store, but I already have the 4.25 versions downloaded?

stoic crane Aug 20, 2020, 11:41 PM

#

i thought there was a fix for that in the 4.25 branch

elder falcon Aug 21, 2020, 12:15 AM

#

how did you manage to write game code that takes longer to compile than the engine?

tardy pollen Aug 21, 2020, 8:40 AM

#

i built ue4.25.3 from source, switched my unreal engine version to that one and now my project doesn't load my plugins anymore. Im supposed to download them from the store, but I already have the 4.25 versions downloaded?
@swift lark Copy them from your 4.25 engine to your source build

#

go to the engine directory: "Engine\Plugins\Marketplace"
copy the plugins from there to the same folder in the source build

round pagoda Aug 21, 2020, 12:16 PM

#

Is there any way I can collaborate with team members using the pre built version of the engine? (We are not changing any engine source code, I just need the server linux build toolchain)

#

I.e. is there any way for them to use the pre built and for me only to use the source?

quick mica Aug 21, 2020, 1:59 PM

#

sure, just put your Project into some Source control and you are fine, it doesn't matter if you use a prebuilt or a local built engine to build your editor (if you use the same version of course)

stoic crane Aug 21, 2020, 10:24 PM

#

@latent ferry https://issues.unrealengine.com/issue/UE-94535 this is the problem actually, shutting off tesselation in the material is the only thing that fully fixes it right now.

latent ferry Aug 21, 2020, 10:28 PM

#

Heh, interesting

stoic crane Aug 21, 2020, 10:29 PM

#

so i went through and turned off tesselation in all the base landscape materials for now, cooked, no more crashes. annoying, but at least the tesselation in our case right now isn't super important.

stable hemlock Aug 23, 2020, 10:51 AM

#

landscape has always been super hit or miss with tessellation

#

I think they broke lods and tessellation multiple times in the past while doing different fixes

onyx light Aug 23, 2020, 11:52 PM

#

UATHelper: Cooking (Windows (64-bit)): RunUAT.bat ERROR: AutomationTool failed to compile.

#

how is this solved

#

ive built the automation tool in vs

pseudo axle Aug 26, 2020, 10:56 AM

#

will confirm figuring that out was a giant pain

stable hemlock Aug 26, 2020, 11:20 AM

#

lots of deprecations in cmc!

olive basin Aug 26, 2020, 11:57 AM

#

will confirm figuring that out was a giant pain
@pseudo axle i would really sincerely appreciate you sharing what you found out 🙂

pseudo axle Aug 26, 2020, 11:57 AM

#

I did it via UAT/UBT

olive basin Aug 26, 2020, 11:58 AM

#

Would share a command with me? So I can replicate it on my proj? Because it's so much pain doing everything by the book and having the toolchain dud out.

pseudo axle Aug 26, 2020, 12:00 PM

#

Im not near the code atm, will try to grab later

tired tinsel Aug 26, 2020, 1:45 PM

#

hi, i'm trying to orchestrate a company that has multiple ue4 projects bound to different versions of the engine. sometime with their own modifications to the engines.
we're under perforce and i'm sort of new to the stream thing.

what's the best way to manage changes?

should you create a main stream and checkin the ue4.25.3 source code. Then create a development stream for the company's changes and then development streams from that development stream for individual projects?

or is it better to

create a main stream for each project's version of the engine?
Vanilla Stream->company development stream->projectA development stream
or
Vanilla main stream
company main stream->company development stream
projectA main stream->projectA development stream

noble sleet Aug 27, 2020, 5:21 PM

#

can someone point me to the 4.25 source on github.. whenever i dl it from github it gives me 4.25.4, i need the old 4.25 not 4.25.1 or .2 or .3 i cant seem to find just reg old 4.25

elder falcon Aug 27, 2020, 8:20 PM

#

that would be 4.25.0-release tag

noble sleet Aug 27, 2020, 9:02 PM

#

@elder falcon TY

stable hemlock Aug 28, 2020, 12:04 AM

#

https://i.imgur.com/KHMKLig.png

Imgur

#

@gritty cedar

#

https://i.imgur.com/6ggkx6v.png

Imgur

tight condor Aug 28, 2020, 3:43 AM

#

any way to change a project that i've been working on in a source build to open in a regular build from the launcher? im getting crashes all the time

torpid moth Aug 30, 2020, 10:05 PM

#

if I would want to play an animation once UE4 crashes is it possible to somewhere add my implementation when the crash window pops up?

dense kettle Aug 31, 2020, 4:21 PM

#

Hi, someone already use IncludeTool from ue4 sources ?

#

I have some issue to scan my project, the tool always scan the Engine source

harsh lantern Aug 31, 2020, 5:15 PM

#

Hey all, just a sanity check: it should not take 48 minutes to compile UE4 from source using a Ryzen 3900x and a fast SSD. I'm hearing some folks compiling in ~15 minutes but no idea how to achieve that.

elder falcon Aug 31, 2020, 7:21 PM

#

do you correctly see the "building .. actions with 24 processes"?

harsh lantern Aug 31, 2020, 7:41 PM

#

yes

#

I now changed to vs 2019 and it seems much faster

#

20 minutes

#

I would not have guessed this to be the issue..

fierce moss Aug 31, 2020, 8:02 PM

#

Hi all! has anyone experience with adding a variable to serialize function in one of the engine core classes? I need to serialize a boolean in UStaticMesh class.

thick storm Aug 31, 2020, 8:12 PM

#

How much memory ?

#

@harsh lantern

harsh lantern Aug 31, 2020, 8:16 PM

#

16gb

thick storm Aug 31, 2020, 8:22 PM

#

you have your answer

#

the cpu is starved for memory

#

you need at lewast 32GB

harsh lantern Aug 31, 2020, 8:25 PM

#

I see, I didn't notice it reach 16gb, but I wasn't looking at all times

#

but yeah, was meaning to upgrade regardless

#

thanks

amber mango Sep 1, 2020, 10:12 AM

#

@fierce moss do you have any more detail?

#

oh.. that was asked yesterday 😄

olive basin Sep 1, 2020, 2:39 PM

#

I don't think you can compile in 15 with a 3900X. A 3950X does it in 17. pretty much stable result.

stable hemlock Sep 1, 2020, 3:15 PM

#

Why selected project starts fully rebuild, how to avoid editor or engine rebuilding and rebuild only game project?
Rider..

#

@harsh lantern possible not standard ssd, something like on PCIe interface and with memory cashed feature +unix arc

and most of unnecessary modules compiles at default, maybe someof them can be deactivated (not maybe, they must be deactivated)
Rebuild succeeded at 23:48:27 (for default hdd) so 17 minutes, it's not great result :\

fierce moss Sep 1, 2020, 5:14 PM

#

@amber mango Hie, Thanks for the response! To be specific I want to add a custom boolean data bUseCustomSettings to all static meshes in my Unreal project. And I want to store this value in all the static mesh asset files... Based on this boolean value I have some other functionality code. Thanks for the help!

amber mango Sep 1, 2020, 5:18 PM

#

@fierce moss I never did that myself, but shouldn't it be as simple as adding it, and marking it UPROPERTY?

#

any UPROPERTY that's not marked Transient should serialize automatically

fierce moss Sep 1, 2020, 5:20 PM

#

Yes even I read about that... So the thing is, I already have StaticMesh asset files which do not have that boolean... now that I have added new UPROPERTY boolean... it tries to serailize it but the asset files don't include that data... I'm not sure how it will work in this situation

amber mango Sep 1, 2020, 5:21 PM

#

it will just not load it, thus it wil be set to whatever the default value is set to in the constructor

#

presumably "false"

#

and the next time it is saved, it will now save your new field

fierce moss Sep 1, 2020, 5:25 PM

#

Oh I see... also I wanted to know the Serialize function is used for saving and loading, right?

amber mango Sep 1, 2020, 5:26 PM

#

yep

#

well.. what function? You shouldn't have to worry about any function, it's done "automatically". But yes, just adding the boolean as UPROPERTY should load and save it

fierce moss Sep 1, 2020, 5:28 PM

#

Alright, got it! Thanks alot for the help 🙂

amber mango Sep 1, 2020, 5:31 PM

#

You're welcome!

hollow wadi Sep 2, 2020, 3:44 AM

#

Anyone tried adding their own code generation to the unreal header tool for use in a regular non source build?

#

Is that a doable thing?

spiral mortar Sep 2, 2020, 4:01 AM

#

I just made my own parser that I run manually, easier

kind kraken Sep 2, 2020, 4:20 AM

#

@hollow wadi To extend UrealHeaderTool, you have to use the source build since you will have to rebuild the project UnrealHeaderTool(which isnt present in the non-souce build)

hollow wadi Sep 2, 2020, 4:21 AM

#

ah damn

#

thanks

fresh ledge Sep 2, 2020, 8:12 AM

#

I am planning on checking out Chaos. Is it difficult to compile the engine or should I just wait until 4.26?

formal flower Sep 2, 2020, 9:42 AM

#

@fresh ledge I got it working easy on 4.23 by just doing this https://docs.unrealengine.com/en-US/...iew/index.html. Couldn't get it to work on 4.24+.

fresh ledge Sep 2, 2020, 9:43 AM

#

Thanks I'll have a look at that.

formal flower Sep 2, 2020, 10:40 AM

#

@fresh ledge
Ah sheit sorry. This is the right link. Think that link got messed up after the documentation rewrite. https://docs.unrealengine.com/en-US/Engine/Chaos/ChaosDestruction/ChaosDestructionOverview/index.html

Chaos Destruction Overview

Overview of the Chaos Destruction tools that are available, and how they work together to create destruction in UE4.

#

Not sure what VS version you're on, but I can only compile 4.25.3+ using VS2019.

fresh ledge Sep 2, 2020, 1:20 PM

#

@formal flower Thanks for the link! It looks way easier than I thought it would be. Going to have a go at it now.

sterile quiver Sep 2, 2020, 11:41 PM

#

Hello everyone. So is messing with Chaos Destruction worth the hassle as it currently stands? I have been trying to get a stable build all week with no success (I am new to this).

I think my issues are related to SteamVR and the shaders that compile for MixedReality headsets. Going to try and remove SteamVR, compile a new build and debug it later on.

stoic crane Sep 2, 2020, 11:44 PM

#

not at the moment, no. if you just wanna play with it, sure.

sterile quiver Sep 2, 2020, 11:49 PM

#

@stoic crane , OK thought so. I understand that APEX destruction is currently broken?

stoic crane Sep 2, 2020, 11:50 PM

#

?

#

no?

sterile quiver Sep 2, 2020, 11:55 PM

#

@stoic crane OK that's good, haha. I have been spending so much time working on a chaos build I had not tried to play with APEX. A bunch of forum posts on EPIC and other places have complained APEX had been busted since 4.2'ish

#

Sorry, before 4.23. I will load up a regular project and see how APEX goes.

stoic crane Sep 3, 2020, 12:00 AM

#

the editor is a little messed up, and you have to change parms to make it refresh, but it does still work.

#

and im pretty sure since 4.23

#

sicne chaos was added.

#

but chaos is missing a lot of stuff still, and if you have it enabled, many other things don't work

#

though i haven't tried with 4.25.

sterile quiver Sep 3, 2020, 12:06 AM

#

OK thanks for the info @stoic crane , most appreciated. I am looking at UE4 as a real time VFX tool (one tool) for virtual production.

formal flower Sep 3, 2020, 2:17 AM

#

Apologies for the bump:

On an Actor-derived class, the first object created, via CreateDefaultSubobject, automatically becomes the RootComponent.

Is there a recommended way to keep that DefaultSceneComponent as the root?

elder falcon Sep 3, 2020, 2:28 AM

#

just add a scene component?

stoic crane Sep 3, 2020, 3:15 AM

#

that's not entirely true either. f you have multiple scene components, and you don't actually SET Rootcomponent = <whatever>

#

it will randomly pick one.

#

and warn about it in logs.

formal flower Sep 3, 2020, 6:23 AM

#

@stoic crane
A default Actor class has this hierarchy when a BP is created.

📎 unknown.png

#

That DefaultSceneRoot can be optionally replaced by another component, or it can be used as the rootcomponent. It doesn't seem i can easily keep it in C++.

I'm not sure how to keep that same DefaultSceneRoot on an Actor-derived class, and attach other components to it.

stoic crane Sep 3, 2020, 6:33 AM

#

if you're making in c++

#

you just do what Zeblote said.

  SceneRoot = CreateDefaultSubobject<USceneComponent>(TEXT("SceneRoot"));
  RootComponent = SceneRoot; //Hell, you can probably just do Rootcomponent = CreateDefaultSubobejct.. 

  Othercomps = CreateDefault(...)
  Othercomp->SetupAttachment(RootComponent)

#

and now you have a scene component root.

formal flower Sep 3, 2020, 6:38 AM

#

Ah, sorry. Thanks. Actually, if I do that, though, the SceneRoot can't be replaced in BP, no?

stoic crane Sep 3, 2020, 6:39 AM

#

indeed.

#

becase it would be inherited. so no, yo cannot replace it

formal flower Sep 3, 2020, 6:44 AM

#

Gotcha. Really appreciate the help! Sorry for the stupid question.

stable hemlock Sep 3, 2020, 6:46 AM

#

Hello guys, I have a quick question, what is this channel for? I read the comment but I can't get it, here the most clever people are together to grow the engine with updates?

formal flower Sep 3, 2020, 6:51 AM

#

@stable hemlock You can see the purpose of each channel at the top of the window.

engine-source Working with Unreal Engine 4 source code • Extending the editor

stable hemlock Sep 3, 2020, 6:52 AM

#

yeah I saw the ocmment, I know, I read it but I can't still understand what it is

#

that's why I am asking

formal flower Sep 3, 2020, 7:06 AM

#

@stable hemlock
OK. It basically means this channel is for talking about working with the UE4 source code which is primarily written in C++.
You can get UE4 source code from here: https://github.com/EpicGames/UnrealEngine

If you don't work with UE4 source code, then you don't need to use this channel.

Though some people here may have added features and fixes to the engine, I don't believe this is the place to request features

as most people here don't work at Epic Games.

stable hemlock Sep 3, 2020, 7:07 AM

#

okay, ty for the info

summer cairn Sep 3, 2020, 9:21 AM

#

hey guys, i'm trying to create a new FAnimNode_BlendListBase child class, do i need to include this in the engine source ? has anyone attempted this ?

#

I want it to resolve what to blend based on a different list, not an int32 or an Enum

stoic crane Sep 3, 2020, 9:23 AM

#

looking at that node, it's exported, so you can do it without modifying the engine.

summer cairn Sep 3, 2020, 9:40 AM

#

ty, i will try it out and come back with it

summer cairn Sep 3, 2020, 2:08 PM

#

hey guys

#

error LNK2019: unresolved external symbol "public: virtual class FString __cdecl UAnimGraphNode_BlendListBase::GetNodeCategory(void)const

#

im getting this error when inheriting from UAnimGraphNode_BlendListBase

#

i have added the, i think, required modules but no luck

fallen island Sep 3, 2020, 8:33 PM

#

After watching Inside Unreal livestream today I'd like to build the NVidia RTX fork. Has anyone tried compiling the NvRTX rtx-dlss-4.25.3 branch?
The instructions say: "Reach out to your Nvidia contact and get an AppId", but their site says it's invitation only. https://developer.nvidia.com/nvidia-dlss-early-access-program
Has anyone managed to build and try this?

NVIDIA Developer

NVIDIA DLSS - Early Access Program

NVIDIA DLSS - Early Access Program This program is accessible by invitation only. NVIDIA set out to redefine real-time rendering through AI-based super resolution - rendering fewer pixels and then using AI to construct sharp, higher resolution images. Powered by dedicated AI p...

elder falcon Sep 3, 2020, 8:59 PM

#

fill out the form at the bottom of the page

fallen island Sep 3, 2020, 9:02 PM

#

thanks, i was not expecting it to work without an invitation.

elder falcon Sep 3, 2020, 9:03 PM

#

I guess they're calling the code they send you an invitation

tight prism Sep 4, 2020, 2:47 PM

#

You can compile and run their branch without that code, and get the RTXGI side of things working. My understanding is that the additional invitation stuff relates to the DLSS bit which wont work without registry keys etc. I certainly have RTXGI running anyway, without the extra invitation, but I think I am going to be out of luck with DLSS as the online application starts asking for project names and a url for info of the project you intend to use with DLSS etc

fallen island Sep 4, 2020, 3:53 PM

#

Thanks. I applied for research, but haven't heard back from them yet.

upbeat olive Sep 5, 2020, 2:06 AM

#

Hey im trying to build engine from source, branch 4.25. When I build UE4 I get the following erros ```Severity Code Description Project File Line Suppression State
Error C2761 'const int *gte::GenerateMeshUVBase::msSource[]': redeclaration of member is not allowed UE4 G:\UnrealEngine\SourceBuilt\UE_4.25\Engine\Plugins\Experimental\GeometryProcessing\Source\GeometryAlgorithms\Private\ThirdParty\GTEngine\Mathematics\GteGenerateMeshUV.cpp 97
Error C2761 'const int gte::GenerateMeshUVBase::msGLSLSource': redeclaration of member is not allowed UE4 G:\UnrealEngine\SourceBuilt\UE_4.25\Engine\Plugins\Experimental\GeometryProcessing\Source\GeometryAlgorithms\Private\ThirdParty\GTEngine\Mathematics\GteGenerateMeshUV.cpp 14
Error C2761 'const int gte::GenerateMeshUVBase::msHLSLSource': redeclaration of member is not allowed UE4 G:\UnrealEngine\SourceBuilt\UE_4.25\Engine\Plugins\Experimental\GeometryProcessing\Source\GeometryAlgorithms\Private\ThirdParty\GTEngine\Mathematics\GteGenerateMeshUV.cpp 56
Error C2503 'gte::GenerateMeshUVBase': base classes cannot contain zero-sized arrays UE4 G:\UnrealEngine\SourceBuilt\UE_4.25\Engine\Plugins\Experimental\GeometryProcessing\Source\GeometryAlgorithms\Private\ThirdParty\GTEngine\Mathematics\GteGenerateMeshUV.h 61

mental olive Sep 5, 2020, 10:02 AM

#

Hello everyone, i have a question about the early z pass settings, in the project settings (i am using 4.25.1), there are 2 settings one says Early Z Pass and has 3 options and the other one is a check box and is saying Mask materials in early z pass and i wanted to ask whats the difference between those two. If one is active and the other one isnt active will this make any changes because i used both and i didnt see any changes in my scene.

stable hemlock Sep 5, 2020, 8:45 PM

#

Hi I was wondering if anyone had any tips on where I could start for implementing forward+ rendering (by adding onto the existing forward renderer) I've read through this article and understand the concept of it, but just don't know where to find the lighting pipeline to start monkeying around with. Any advice would be helpful and @ me cause I'll be out and about for awhile~

📎 forward_plus.pdf

stable hemlock Sep 6, 2020, 7:37 AM

#

wait how do you install marketplace assets into a source build of ue4?

#

📎 unknown.png

stable hemlock Sep 6, 2020, 9:45 AM

#

if its a plug in you copy it to your own folder manually, and start praying to the old gods

#

if its just normal assets just use the migrate function with a launcher build

lapis bloom Sep 6, 2020, 3:31 PM

#

is it normal to let visual studio build the solution and it spends hours, and then it gets "stuck" at a certain moment?

#

I started building yesterday, went to sleep, now it seems it's stuck at compiling 3927/3929 library

#

im not sure if I have to restart the process or just wait longer 😓

lapis bloom Sep 6, 2020, 6:05 PM

#

has anyone had this error after building the engine and trying to run a project with it?

"VulkanRHL.dll is either not designed to run on Windows or it contains an error"

stable hemlock Sep 7, 2020, 9:49 AM

#

not really

#

i think its the dev rendering

#

i could be wrong

stable hemlock Sep 7, 2020, 2:48 PM

#

Hello

#

Does anyone know anything about UE4 reverse engineering

#

I’m confused about some things

half talon Sep 7, 2020, 5:23 PM

#

just noticed there's a new experimental EnhancedInput plugin on the master branch, anyone have insights on it?

thick storm Sep 7, 2020, 7:59 PM

#

no branch have water tools

#

yet

slim steppe Sep 7, 2020, 9:35 PM

#

Unable to load module ../UE4Project/Binaries/Win64/UE4Editor-UE4Project.dll' because the file couldn't be loaded by the OS.
Does somebody know what is wrong? i tried to launch my project in c++ in Development Editor mod and this happened...

stable hemlock Sep 8, 2020, 8:45 AM

#

I wish they would switch to C++20 before ue5 release and convert everything to modules at the same time

#

I sometimes wish the sun would rise from the west as well though...

gloomy hamlet Sep 8, 2020, 9:01 AM

#

You can already compile the engine fine in cpp17 mode. Just need to enable it in the target file or build config.

little olive Sep 8, 2020, 10:28 AM

#

Hi. I'm new

undone oxide Sep 8, 2020, 12:09 PM

#

Hey unreal people!
Does anyone know how to get an IPropertyHandle from an FProperty?

thick storm Sep 8, 2020, 3:39 PM

#

you can't really

#

everything related to it is private

mild falcon Sep 8, 2020, 9:58 PM

#

@undone oxide what you trying to do friend?

hot glade Sep 8, 2020, 11:26 PM

#

Hey all, i notice a common issue with compiling ue4 source engine using visual studio.
it seems even here it was talked about but i didnt see any solution.
it gives error because Linkage on certain function pow10.
apprently this function defintion appear twice and almost identical except it's Linkage specifier

uint64 Pow10(const int32 InExponent)
{
    const int32 ClampedExponent = FMath::Min(InExponent, Internal::MaxFractionalPrintPrecision);
    return Internal::Pow10Table[ClampedExponent];
}

and

#

is there a proper way to solve linkage specifier issue?

thorny granite Sep 9, 2020, 5:13 PM

#

@stable hemlock Did you find out which branch had the new water tools in it?
@rapid fable It exists in the master branch or release-engine-staging branch. However, version 4.26 is currently being merge, so the code of these two branches may fail to compile.

#

You can wait for the newly created 4.26 branch. In the next few days. Related functions will be merged into this branch.

stable hemlock Sep 10, 2020, 8:32 AM

#

Update version number in //UE4/Main to 4.27.

Huh, didn't think there would be a 4.27, but I guess doing maintenance updates for ue4 makes sense for the foreseeable future

stoic crane Sep 10, 2020, 8:37 AM

#

and to think, there are still breaking bugs in 4.25

thick storm Sep 10, 2020, 9:37 AM

#

@stoic crane It always eaxggarted. What you consider breaking bugs, are non issues for other people

#

there are built in analytics into engine for that reason

stoic crane Sep 10, 2020, 9:39 AM

#

i think landscape sculpting is pretty significant.

thick storm Sep 10, 2020, 9:46 AM

#

again

#

what exactly doesn't work ?

#

It works fine for me

stable hemlock Sep 10, 2020, 9:47 AM

#

4.25 is still getting updates though

#

its not like they abandoned it

#

there will be a patch release soon

thick storm Sep 10, 2020, 9:48 AM

#

that's accidental

#

because it version to use if you target next gen

#

and don't have access to UE5

#

generally Epic does not work this way

stable hemlock Sep 10, 2020, 9:48 AM

#

I'm not talking about the plus branch

#

they incremented the patch version in 4.25 release but didn't release an update yet

#

iirc

thick storm Sep 10, 2020, 9:49 AM

#

you are expected to upgrade to new version as soon as it releases

stable hemlock Sep 10, 2020, 9:52 AM

#

just rechecked, 4.25 branch is at 4.25.4 while the latest version in the launcher is 4.25.3, so I would expect some more hotfixes soon. 4.25-plus branch gets loads of other updates but that isn't going to 'released' as a patch release

thorny granite Sep 10, 2020, 3:01 PM

#

4.25 plus is mainly to update console programs such as ps5/xbox, 4.25.4 will also be updated recently.

#

UE5 is a separate branch and cannot be viewed by non-Epic personnel.

#

@rapid fable The 4.26 branch is still in its early stages, and many functions have not been merged from the Main branch.😆

#

In addition, you are right, the Main branch has been updated to 4.27

📎 unknown.png

thorny granite Sep 10, 2020, 3:43 PM

#

The 4.26 merged into the release branch is about the end of the year, and the release branch will temporarily update 4.25.4. 👀

thick storm Sep 10, 2020, 6:22 PM

#

@thorny granite everything is merged to main

#

from the point that branch was created

#

that's how branching works ;p

normal saffron Sep 11, 2020, 8:33 AM

#

Why am i getting this crash when running my dedicated server shortcut?

📎 VT_Beta-backup-2020.09.11-07.34.32.log

#

is there something missing in my project? or do i need to fix an error?

full ermine Sep 11, 2020, 11:32 AM

#

I get the same :<

normal saffron Sep 11, 2020, 11:36 AM

#

@full ermine the same?

full ermine Sep 11, 2020, 11:37 AM

#

Yes

normal saffron Sep 11, 2020, 11:37 AM

#

for dedicated server?

full ermine Sep 11, 2020, 11:37 AM

#

Yes

normal saffron Sep 11, 2020, 11:37 AM

#

Well i deleted some massive junk from my project went from 97 gb to 68

#

now re packaging

full ermine Sep 11, 2020, 11:40 AM

#

I'm on an empty project 😄

normal saffron Sep 11, 2020, 11:40 AM

#

you started a new one?

#

or you packaged an empty?

full ermine Sep 11, 2020, 11:43 AM

#

New Third Person Sample; Setup the Target.cs; package and then run

#

Trying it out a second time now

normal saffron Sep 11, 2020, 11:44 AM

#

server target file?

full ermine Sep 11, 2020, 11:45 AM

#

*Server.Target.cs for the build target

#

hmm - now it works here;

normal saffron Sep 11, 2020, 12:21 PM

#

what caused the fix?

#

@full ermine

full ermine Sep 11, 2020, 12:24 PM

#

No idea tbh. I just did a repackage

#

basically this https://ue4community.wiki/dedicated-server-guide-(windows)-cny2avzu

Dedicated Server Guide (Windows) | UE4 Community Wi...

Guide on building Unreal Engine and project in the Dedicated server configuration.

normal saffron Sep 11, 2020, 12:24 PM

#

did you make any changes?

#

@full ermine what changes did you make?

full ermine Sep 11, 2020, 12:40 PM

#

None; I did exactly as described

normal saffron Sep 11, 2020, 12:44 PM

#

Okay

main moth Sep 12, 2020, 3:30 AM

#

Are there any custom, modified versions of UE4 that can be downloaded for free somewhere?
Like example, a team added a bunch of features, changed UI layout, etc and uploaded the source for others to use?

grizzled geyser Sep 12, 2020, 6:50 AM

#

Hi guys, I'm trying to build UE4 from source but when I'm trying to run I'm getting an error of Bad Image with status code 0xc000012f:

D:\dev\UnrealEngine\Engine\Binaries\Win64\UE4Editor-LevelEditor.dll is either not designed to run on Windows or it contains an error. Try installing the program again using the original installation media or contact your system administrator or the software vendor for support. Error status 0xc000012f.

Any idea what am I missing?

thick storm Sep 12, 2020, 7:05 AM

#

@main moth not really

#

you can look up on github for somethiing

#

personal ran

#

rant*

#

gamedev unlike rest of the software industry doesn't like share code

#

where everybody is going open source, we still cling to secruity and advantage by obscurity

#

there are few notable exception, but for most time people are going to extreme lenghts to protect code like it matters -;-

grizzled geyser Sep 12, 2020, 7:25 AM

#

@thick storm Any idea about my issue?

plain lily Sep 12, 2020, 7:30 AM

#

@grizzled geyser never seen that error. Building the engine should be straightforward simply by following the instructions.

#

Any other clue from the log file while building?

grizzled geyser Sep 12, 2020, 7:31 AM

#

:\ I did follow the instructions.
What log file? are you talking about output?

#

@plain lily

plain lily Sep 12, 2020, 7:34 AM

#

Yes the build output. Any warning or error there?

grizzled geyser Sep 12, 2020, 7:35 AM

#

Nope, quite short. The closest thing to an error (which is not useful) is the last (exit) lines

The thread 0xbc8 has exited with code -1073741521 (0xc000012f).
The thread 0xf04 has exited with code -1073741521 (0xc000012f).
The thread 0x285c has exited with code -1073741521 (0xc000012f).
The program '[23284] UE4Editor.exe' has exited with code -1073741521 (0xc000012f).

#

Other than that it's multiple lines of loading dlls such as 'UE4Editor.exe' (Win32): Loaded 'D:\dev\UnrealEngine\Engine\Binaries\Win64\UE4Editor-InputCore.dll'. Symbols loaded.

plain lily Sep 12, 2020, 7:37 AM

#

Strange. Looks like something is trying to interfere with your build process, but I don't know what.

grizzled geyser Sep 12, 2020, 7:38 AM

#

I did change some source files, but nothing that should do that. I'll try stashing them and doing it again.
What are the directories I should remove to "reset" the process? (like Intermediate & Saved in a game project I guess)

plain lily Sep 12, 2020, 7:39 AM

#

@grizzled geyser Before you do that, do you have any malware protection running?

grizzled geyser Sep 12, 2020, 7:39 AM

#

yeah Avast.

#

Let me try disablign it

plain lily Sep 12, 2020, 7:39 AM

#

It may be worth disconnecting from the internet, disabling it and trying again

#

Yep

grizzled geyser Sep 12, 2020, 7:47 AM

#

@plain lily seems I already changed a file, so I have to rebuild, part of it anyway. Sorry for the delay

plain lily Sep 12, 2020, 7:52 AM

#

np

grizzled geyser Sep 12, 2020, 7:55 AM

#

@plain lily In the meantime - do you know of anyway to change the amount of processors used in compilation?
I found a post online talking about BuildConfiguration.xml and ProcessorCountMultiplier, but I'm getting a warning that it doesn't exist when using it (and I also can't find it in the source, unlike the other arguments)

plain lily Sep 12, 2020, 7:57 AM

#

@grizzled geyser sorry I don't. I don't build the engine that often to be needing that.

#

https://forums.unrealengine.com/development-discussion/engine-source-github/1663426-use-more-cpu-cores-threads

Unreal Engine Forums

Hi All,

I read an article in Unreal Wiki ( https://wiki.unrealengine.com/Boost_Compile_Times ) that you can allow UE (version 4.22 for me) to use more cores,

#

Check this out.

#

Last post

grizzled geyser Sep 12, 2020, 8:01 AM

#

How did you find it and I didn't :p but cool looks great, thanks!

#

@plain lily How many cores you have?
Just wondering since the guy in the post was talking about reducing from 48 to 24, while mine only has 8.
Looking at i9-10900F, it seems to have 10 (which is an advanced chipset as far as I can tell).
Who has that many cores? what kind of pc is that?

plain lily Sep 12, 2020, 8:11 AM

#

I have 4 cores

#

He may be using a powerful multi-core server

grizzled geyser Sep 12, 2020, 8:12 AM

#

to run UE4? :p

plain lily Sep 12, 2020, 8:12 AM

#

No, to compile the engine

#

Typical of a professional studio setup

#

They may be using it as multiplayer server afterwards

grizzled geyser Sep 12, 2020, 8:13 AM

#

oh yeah for a professional studio that make sense; not sure why I assumed it's for a personal/home computer

#

@plain lily finally complete and I disable the AV, but I'm getting the same error :\

plain lily Sep 12, 2020, 8:22 AM

#

Think someone was suggesting some missing dependencies?

#

Even though that is strange as well

grizzled geyser Sep 12, 2020, 8:23 AM

#

I sort of saw that, but then I saw the error he got was about .dll while mine is about the acutal .exe files, so I ignored it.
Where did you see that?

plain lily Sep 12, 2020, 8:23 AM

#

If you are up for some hard core debugging, we can try to find out what is wrong

#

You can use Process Explorer to see potential errors

#

https://docs.microsoft.com/en-us/sysinternals/downloads/process-explorer

Process Explorer - Windows Sysinternals

Find out what files, registry keys and other objects processes have open, which DLLs they have loaded, and more.

grizzled geyser Sep 12, 2020, 8:25 AM

#

I got that. I thought it's only for loaded/running programs though

#

If you are up for some hard core debugging, we can try to find out what is wrong
@plain lily I usually am yes :p

plain lily Sep 12, 2020, 8:25 AM

#

You said you try to run the Editor and then you get the error

#

So the loading of the EXE starts but then it goes wrong

grizzled geyser Sep 12, 2020, 8:26 AM

#

yeah but there's no time to capture it or anything like that. Or is there a way to capture it anyway?

plain lily Sep 12, 2020, 8:26 AM

#

You just filter for the editor exe

#

We can switch to DM if you like so we don't flood the channel

grizzled geyser Sep 12, 2020, 8:27 AM

#

Sure w/e more comfortable to you, you're the one helping me ^^

#

You just filter for the editor exe
@plain lily Yeah but I doubt I can inspect it in time before it stops. Or perhaps it would still be running while the prompt message is showing? let me check

plain lily Sep 12, 2020, 8:28 AM

#

As soon as the process stops it will stop tracking it as well

#

You can review the output afterwards

grizzled geyser Sep 12, 2020, 8:29 AM

#

been long since I used it and I can't seem to find a filter line or anything like that?

#

@plain lily Just tried to use dumpbin /headers and it seems the .dll files are bad somewhat. This is what I get from it:

#

Microsoft (R) COFF/PE Dumper Version 14.28.29213.0
Copyright (C) Microsoft Corporation.  All rights reserved.


Dump of file D:\dev\UnrealEngine\Engine\Binaries\Win64\UE4Editor-CoreUObject.dll

File Type: COFF OBJECT

FILE HEADER VALUES
               0 machine (Unknown)
               0 number of sections
               0 time date stamp
               0 file pointer to symbol table
               0 number of symbols
               0 size of optional header
               0 characteristics

  Summary

plain lily Sep 12, 2020, 8:33 AM

#

Sorry buddy pointed you to the wrong tool

#

You actually need to use Process Monitor for that

#

https://docs.microsoft.com/en-us/sysinternals/downloads/procmon

Process Monitor - Windows Sysinternals

Monitor file system, Registry, process, thread and DLL activity in real-time.

#

Yes I see. So something goes wrong in the build process.

#

Producing invalid DLL's.

grizzled geyser Sep 12, 2020, 8:35 AM

#

yup. The question is what / how to fix it? and how come there aren't even warnings about it

#

mm ok, that's interesting & weird & bad. I opened the file in npp, and it pretty much contains only this:

📎 unknown.png

#

the .dll file, that is

plain lily Sep 12, 2020, 8:37 AM

#

that may explain why it doesn't run properly...

grizzled geyser Sep 12, 2020, 8:37 AM

#

lol true

#

Any idea on how to investigate further the actual build issue?

plain lily Sep 12, 2020, 8:39 AM

#

Which version of Visual Studio?

grizzled geyser Sep 12, 2020, 8:40 AM

#

2019

#

Try an older one?

plain lily Sep 12, 2020, 8:43 AM

#

I suspect something wrong with your VC2019 installation

grizzled geyser Sep 12, 2020, 8:44 AM

#

It works when I'm building my game project in cpp btw, and other various projects

#

@plain lily Here's something interesting: I changed one of the source files related to the UE4Editor-CoreUObject.dll and built, and now the .dll file looks good and it's not complaining about it when running.
If that tells you anything?

plain lily Sep 12, 2020, 8:46 AM

#

Changed how?

grizzled geyser Sep 12, 2020, 8:46 AM

#

added an empty line

#

just wanted to make it rebuild that .dll

plain lily Sep 12, 2020, 8:47 AM

#

So that solved all the issues?

grizzled geyser Sep 12, 2020, 8:47 AM

#

not sure, there are multiple errors with multiple .dlls. Gonna try the others now and we'll see

plain lily Sep 12, 2020, 8:47 AM

#

outdated DLL?

grizzled geyser Sep 12, 2020, 8:47 AM

#

outdated from an hour ago? :p

#

and why would it be a dll full of nulls?

plain lily Sep 12, 2020, 8:48 AM

#

I am clueless. I would say your computer is possessed.

grizzled geyser Sep 12, 2020, 8:48 AM

#

lol

#

I think it's something with that unity build. Perhaps a bug in vs 2019? :S

#

I am updating quite frequently

plain lily Sep 12, 2020, 8:49 AM

#

That's possible.

#

I would try to rebuild everything from scratch, starting from a fresh copy from GitHub

#

Looks like something went wrong at a certain point and you are carrying the effects along

#

did you see any error with GenerateProjectFiles?

grizzled geyser Sep 12, 2020, 8:51 AM

#

I agree with you but I'm gonna try to carry on anyway, see if I can get away with just adding empty lines to source files - just because the process is so long.
I'm just trying to create PRs and not actually run UE4 constantly from source, so as long as I can get it to work and check the PR is working I'm fine with it.
but yeah I'll go that way if this doesn't work

#

did you see any error with GenerateProjectFiles?
@plain lily nope it looked fine too. I could try to regenerate it later on though. Do you know what directories I should delete before doing that?

plain lily Sep 12, 2020, 8:55 AM

#

Honestly I would delete everything and start from scratch

grizzled geyser Sep 12, 2020, 8:56 AM

#

It's gonna take me an entire day again, I'd rather not do that :p

plain lily Sep 12, 2020, 9:00 AM

#

At least rerun Setup.bat and GenerateProjectFiles.bat -2019

grizzled geyser Sep 12, 2020, 9:01 AM

#

didn't know there's -2019 flag :-o
I reran setup.bat already btw, but I'll try again with the project files yeah

plain lily Sep 12, 2020, 9:02 AM

#

I am still on VS2017

#

Having read of a lot of issues with VS2019

grizzled geyser Sep 12, 2020, 9:03 AM

#

Specifically with ue4 or in general?

plain lily Sep 12, 2020, 9:05 AM

#

Specifically with UE4

#

Have a look at this: https://variable63.wordpress.com/2019/09/27/how-to-build-unreal-4-4-23-0-from-source-code-and-server/

Variable 63

variable63

How to build Unreal 4 (4.23, 4.24 & 4.25) from Source code and Server

Content Visual Studio Download Set up Solution PsAllocator Build and Launch (client) Server Cooking Launching Joining Build Times Summary Use Visual Studio 2017 for 4.23, Visual Studio 2019 solutio…

#

Probably more up to date than the official docs

grizzled geyser Sep 12, 2020, 9:07 AM

#

Looks good I'll start following it now!
He's recommending VS 2019 for 4.25 btw

plain lily Sep 12, 2020, 9:09 AM

#

Because Epic is recommending it, but 2017 is still supported

grizzled geyser Sep 12, 2020, 9:10 AM

#

Just finished rebuilding the .dlls btw and it seems to work, or at least startup. I can see the Unrel Editor splash/loading screen.

plain lily Sep 12, 2020, 9:10 AM

#

Nice!

#

Is the AV still disabled?

grizzled geyser Sep 12, 2020, 9:10 AM

#

I ended up realizing all the "null dlls" are 2048 kb in size, so I deleted all these .dlls

#

~~yeah~~ nope I ~~turned it on~~ enabled it like 5m after we initially talked about it

plain lily Sep 12, 2020, 9:11 AM

#

That may have played a role

grizzled geyser Sep 12, 2020, 9:11 AM

#

Yeah definitely. It occurred to me the av might have been playing with the build process rather than the running process,
but to check it means disabling it for the entire day hehe.

plain lily Sep 12, 2020, 9:11 AM

#

if everything works you can re-enable it

grizzled geyser Sep 12, 2020, 9:13 AM

#

re-enable what?

#

oh sorry:

#

fixed the message; I meant I enabled the AV quickly after disabling it.

plain lily Sep 12, 2020, 9:30 AM

#

ok that wasn't it then

#

the mystery goes on

grizzled geyser Sep 12, 2020, 9:33 AM

#

yup. I almost got it btw, it even compiled many shaders (around 2k), but it seems one of the later dlls wasn't rebuilt.
Just trying to rebuild the entire UE4 project, hopefully it will only rebuild some of it and not actually everything. But looks like it's leading the way of doing things from scratch

grizzled geyser Sep 12, 2020, 3:23 PM

#

@plain lily Finally got it working! Regenerated the project files back then and rebuild. Took me 6h, but it's still less than what it would of been. Project is up and running and for the past 10m everything works smoothly.
And thank you!

plain lily Sep 12, 2020, 3:24 PM

#

@grizzled geyser Great! 👍

main moth Sep 12, 2020, 5:07 PM

#

where everybody is going open source, we still cling to secruity and advantage by obscurity
@thick storm Really? Why is game dev unlike other software dev?

thick storm Sep 12, 2020, 5:12 PM

#

no idea

#

new ideas in game dev aside from few exception

#

are really adopted slowly

ionic plover Sep 12, 2020, 10:38 PM

#

Pardon my naiveté, but I don't need a GPU to run engine builds do I? Could I run Engine or project builds on a rack-mounted Windows Server? Anyone know?

elder falcon Sep 12, 2020, 10:52 PM

#

a dedicated server or packaging in headless mode sure

ionic plover Sep 12, 2020, 10:58 PM

#

@elder falcon So I couldn't build a user client? Or are you saying that I can run UBT in all the ways needed to package engine binaries, and game binaries (both client and dedicated server?)

elder falcon Sep 12, 2020, 10:58 PM

#

you can build all of those things, but not run them

ionic plover Sep 12, 2020, 10:59 PM

#

Right. Not concerned with running, just staging, building and packaging them (and deploying them)

elder falcon Sep 12, 2020, 11:00 PM

#

yeah that works fine

ionic plover Sep 12, 2020, 11:00 PM

#

Coolio, that's what I suspected. Just wanted to be sure. Thanks @elder falcon

minor sparrow Sep 13, 2020, 5:55 PM

#

Hello @all
I'm using UE 4.25 and using Webbrowser. Issues come from when I press some key when enable the IME option using another language different EN(Such as Ko,Jp,China..). IME allows input of Windows change status enables to be disabled. According to Release notes: https://docs.unrealengine.com/en-US/Support/Builds/ReleaseNotes/4_18/index.html

New: Chromium Embedded Framework (CEF) upgraded to branch 3071 Win32/Win64/Mac. Added web browser support for foreign language character input via IME.

But Webbrowser still occur issues when user input IME.

Who can help me this issue?

Unreal Engine 4.18 Release Notes

Release Notes for Unreal Engine 4.18

unique sparrow Sep 14, 2020, 2:13 PM

#

Hey is there an easy way to set up new inputs? As far as I've seen you cant map custom controllers without plugins.

serene yew Sep 16, 2020, 1:47 AM

#

@unique sparrow What do you mean new inputs

#

Like mouse, touch, keyboard, whatever, etc?

#

Or do you mean like from some weird piece of hardware

#

like a pressure plate you step on or something like that

unique sparrow Sep 16, 2020, 3:15 PM

#

@serene yew Haha no, I want my HOTAS set up for my helicopter controller. Problem is, I can't use an existing plugin since I want to sell the controller on the marketplace in the end

serene yew Sep 16, 2020, 3:22 PM

#

lol okay. i can't help you then, sorry. I don't even know what HOTAS and a helicopter controller are.

unique sparrow Sep 16, 2020, 4:44 PM

#

Joystick inputs

#

that aren't in the UE4 dropdown list of inputs

serene yew Sep 16, 2020, 5:20 PM

#

@unique sparrow UE4 should be able to handle your joystick input without any trickery... have you gone through the "setting up inputs" guide? If that didn't work for you then it looks like you have to use this:
https://docs.unrealengine.com/en-US/Gameplay/Input/RawInput/index.html

RawInput Plugin

The RawInput plugin can read specific devices that don't conform to XInput standards.

stable hemlock Sep 16, 2020, 5:57 PM

#

how would i access an actor's yaw, pitch, and roll from its rootcomponent?

serene yew Sep 16, 2020, 6:37 PM

#

@stable hemlock the root component's yaw pitch and roll is the actor's yaw, pitch and roll.

stable hemlock Sep 16, 2020, 6:37 PM

#

how would i access it?

#

what is the field called

#

actor->rootcomponent->???

#

or is there a function

#

which returns the FRotator

serene yew Sep 16, 2020, 6:39 PM

#

well i don't think there are methods built in like GetYaw(), etc, but yaw would just be its rotation around the z axis, pitch would be its rotation around the y axis (i think it's y...) and roll is its rotation around the x axis.

#

double check it, but i'm almost positive yaw is z. if i'm wrong about pitch and roll then just just change x and y

#

that make sense?

stable hemlock Sep 16, 2020, 6:43 PM

#

not really

#

I know that XYZ can be accessed through Actor->rootComponent->componentToWorld.translation.X

#

is that right?

serene yew Sep 16, 2020, 6:44 PM

#

you're using c++?

stable hemlock Sep 16, 2020, 6:44 PM

#

yes

serene yew Sep 16, 2020, 6:44 PM

#

you want it the values in world space?

stable hemlock Sep 16, 2020, 6:45 PM

#

yea

serene yew Sep 16, 2020, 6:45 PM

#

um... okay, so first just get the actor's rotation

#

you don't even need to reference the root component. just get it from the actor

#

they'll be the same value anyway

#

then pass in those values, each separately, to um... let's see i think there is a function called like LocalToAbsolute or something like that

#

basically just look up a function that can convert a local-space rotator to be a world space one

#

and then that's it

merry jacinth Sep 17, 2020, 9:55 AM

#

Hey guys, i've tried to build UE from source, i did every step which i was told from here https://github.com/EpicGames/UnrealEngine, but when i try to run it via F5 i get this here

1>------ Build started: Project: UE4, Configuration: Development_Editor x64 ------
1>Using 'git status' to determine working set for adaptive non-unity build (C:\UnrealEngine).
1>Waiting for 'git status' command to complete
1>Building UE4Editor and ShaderCompileWorker...
1>Using Visual Studio 2019 14.27.29111 toolchain (C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.27.29110) and Windows 10.0.18362.0 SDK (C:\Program Files (x86)\Windows Kits\10).
1>Building 5 actions with 12 processes...
1>  [1/5] dte80a.tlh
1>C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.MakeFile.Targets(46,5): error MSB3073: The command "C:\WINDOWS\System32\chcp.com 65001 >NUL 
1>C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.MakeFile.Targets(46,5): error MSB3073:  ..\..\Build\BatchFiles\Build.bat -Target="UE4Editor Win64 Development" -Target="ShaderCompileWorker Win64 Development -Quiet" -WaitMutex -FromMsBuild" exited with code 6.
1>Done building project "UE4.vcxproj" -- FAILED.
========== Build: 0 succeeded, 1 failed, 2 up-to-date, 0 skipped ==========

#

Any chance that someone knows how to fix this ? :c

merry jacinth Sep 17, 2020, 10:10 AM

#

Actually, i did not every step

#

I did not install VS17 since i have VS19.
And after i tried to google this error i read that making it with VS17 will fix it, but another one said that it didn't fixed it.
I guess i'll just stay away from source builds then >_<

stoic crane Sep 17, 2020, 10:19 AM

#

I use 2019.

#

Dont even have 2017 installed.

thick storm Sep 17, 2020, 10:46 AM

#

did anyone tried EnhancedInput ?

#

How do I bind InputActions to functions ? ;s

gloomy hamlet Sep 17, 2020, 11:02 AM

#

@merry jacinth I ran into that on a recent source build, I suspect it's a bug they've introduced, or maybe compiler-specific problem. But if I remember right that dependency comes from the VisualStudioSourceCodeAccess plugin. I think I got around the problem by removing that plugin.

grizzled geyser Sep 17, 2020, 12:16 PM

#

Anyone having an issue compiling the latest source (12h ago) ? Specifically this error:

2>D:/dev/UnrealEngine/Engine/Source/Runtime/Engine/Private/SkeletalMesh.cpp(1399): error C3861: 'UpdateStreamingStatus': identifier not found

Or is it common for master to have compilation errors?

limber jacinth Sep 17, 2020, 12:26 PM

#

you really should not be using Master

#

its not ready for use and def should not be used for making your game (unless you are just testing features in a test project)

#

and yes it is common.

grizzled geyser Sep 17, 2020, 12:26 PM

#

I'm making a feature and planning to do a PR

limber jacinth Sep 17, 2020, 12:26 PM

#

make it in 4.25 🤷

#

they accept PRs for that

#

and merge them

grizzled geyser Sep 17, 2020, 12:26 PM

#

in release? you usually don't do PR against release branches

limber jacinth Sep 17, 2020, 12:27 PM

#

they won't accept it for 4.26

grizzled geyser Sep 17, 2020, 12:27 PM

#

usually = in most products that is

limber jacinth Sep 17, 2020, 12:27 PM

#

yes 4.25 is release

#

Master is not release

grizzled geyser Sep 17, 2020, 12:27 PM

#

Yes I know, that is what I said

limber jacinth Sep 17, 2020, 12:27 PM

#

they won't accept PR's against master branch

#

iirc

grizzled geyser Sep 17, 2020, 12:27 PM

#

they won't accept it for 4.26
@limber jacinth why not? how do you know?

elder falcon Sep 17, 2020, 12:27 PM

#

they won't accept it anyway so who cares?

#

you make a PR and it sits there for years

limber jacinth Sep 17, 2020, 12:28 PM

#

hey they accepted mine! 😄

grizzled geyser Sep 17, 2020, 12:28 PM

#

they accept my old one :p

limber jacinth Sep 17, 2020, 12:28 PM

#

2 days ago!

grizzled geyser Sep 17, 2020, 12:28 PM

#

to be fair though, it was a 3 line functions that pretty much didn't do much :p

#

2 days ago!
@limber jacinth when did you submit it?

limber jacinth Sep 17, 2020, 12:28 PM

#

https://github.com/EpicGames/UnrealEngine/pull/7157 😄

#

3 months ago

#

2 months ago actually

#

sorry

grizzled geyser Sep 17, 2020, 12:29 PM

#

yeah that seems to match mine as well

#

That was my PR btw lol:

int32 UKismetMathLibrary::Conv_Int64ToInt(int64 InInt)
{
    return (int32)InInt;
}

(And back).
Took around 2 month as well

limber jacinth Sep 17, 2020, 12:29 PM

#

i have had them accepted in a week

#

int64 to int?

#

did they not have that anyway?

grizzled geyser Sep 17, 2020, 12:30 PM

#

yup. and no they didn't have it, not for int64

limber jacinth Sep 17, 2020, 12:31 PM

#

that is shobby of them, offer int64 in BP, but no nodes to use with it. Then again converting int64 to int32 feels strange but int32 to int64 is ok

#

lol

grizzled geyser Sep 17, 2020, 12:31 PM

#

yup lol

limber jacinth Sep 17, 2020, 12:31 PM

#

tbh tho, most BP users won't use int64

grizzled geyser Sep 17, 2020, 12:31 PM

#

oh I also had another PR for a bugfix, really annoying one, about navmsh.
But one of the core devs fixed it before any of them got time to take a look at it :p

#

true, but it exist for all the other types, it should exist even if no one uses it.

#

Anyway - what makes you think they won't accept PRs into master?

#

from what I can tell it doesn't seem to matter the branch at all, it's as if one of the core devs enters it manually

limber jacinth Sep 17, 2020, 12:34 PM

#

just what i heard, but then again i only ever use Release branch

#

and PR's are against that

grizzled geyser Sep 17, 2020, 12:36 PM

#

all other PRs from the dev team seem to be against master actually.

thick storm Sep 17, 2020, 1:37 PM

#

ok manged to use the enhanced input component

#

wasn't actually that hard

#

event names got me confused : D

stable hemlock Sep 17, 2020, 11:02 PM

#

is enhanced input component really enhanced?

#

what is different about it?

thick storm Sep 18, 2020, 7:06 AM

#

you can make things like combos in it

#

where you need to press defined sequence of actions

#

where each action can have different trigger parameters

#

you can easily add curve to it, to scale input value

#

you can easily make things like hold to trigger

#

or hold, release to trigger

#

no input is actually hardcoded

#

there is no concept of press, release, etc

#

everything is defined as trigger, which is just custom object

#

and you can stack multiple triggers

#

so you can have Press

#

and add hold

#

or release

#

or both

#

it's still pretty bare bones as there so in engine way to map names to keys

#

but the core of the system work fine

gritty saffron Sep 18, 2020, 8:39 AM

#

Hi! My plugins always re-compile every time y open UE4, how can i avoid that?
Only plugins added in the project folder do that, not engine plugins

stable hemlock Sep 18, 2020, 10:08 AM

#

huh, combo thing sounds pretty nice

celest viper Sep 18, 2020, 9:18 PM

#

@thick storm is that in 4.25 or for a future release? I added button combo functionality to our game awhile back but its pretty simple

thick storm Sep 18, 2020, 9:19 PM

#

@celest viper 4.26 for experimental 5.0 for maybe beta or stable

celest viper Sep 18, 2020, 9:19 PM

#

Ah, gotcha. Explains why I wasnt finding anything when I searched around the project 🙂

deep finch Sep 20, 2020, 10:37 PM

#

OK this is ridiculous. I just build 4.26 and it takes 166GB of hard drive space for a development editor build alone. There has to be a better way to build the engine.

spiral mortar Sep 21, 2020, 1:55 AM

#

That's why we have launcher builds?

tacit cloak Sep 21, 2020, 6:03 AM

#

xD

nocturne fjord Sep 21, 2020, 7:13 AM

#

Hi! Small question. Has anyone worked with porting the game to Switch? Does debugging work on this platform in version 4.25?

#

I mean debugging engine code, not a game code.

dense helm Sep 21, 2020, 11:56 AM

#

Do anyone know where the static method SetupThreadAffinity in unrealengine class is called?

dense helm Sep 21, 2020, 5:04 PM

#

Anyone?

elder falcon Sep 21, 2020, 5:18 PM

#

just find references?

dense helm Sep 21, 2020, 5:19 PM

#

i don t find anything outside unrealengine class

elder falcon Sep 21, 2020, 5:23 PM

#

this is the only usage

📎 unknown.png

dense helm Sep 21, 2020, 5:43 PM

#

ok thx so no error
so this is only used by a cmd ok

rocky cloud Sep 22, 2020, 12:40 AM

#

Anyone else on macOS getting errors in UE4 with the latest XCode?

/Users/Shared/Epic Games/UE_4.23/Engine/Source/Runtime/MeshDescription/Public/MeshDescription.h:478:24: error: loop variable 'EdgeVertexID' of type 'const FVertexID' creates a copy from type 'const FVertexID' [-Werror,-Wrange-loop-analysis]
                for( const FVertexID EdgeVertexID : Edge.VertexIDs )
                                     ^
/Users/Shared/Epic Games/UE_4.23/Engine/Source/Runtime/MeshDescription/Public/MeshDescription.h:478:8: note: use reference type 'const FVertexID &' to prevent copying
                for( const FVertexID EdgeVertexID : Edge.VertexIDs )
                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                                     &

#

I suppose I could add #pragma(warning(disable: <warning-num>)); to the files in questions... but what is the clang warning number?

rocky cloud Sep 22, 2020, 1:13 AM

#

fix was to add Result += " -Wno-range-loop-analysis"; to GetCompileArguments_Global in MacToolChain.cs

#

well "fix"

regal yoke Sep 22, 2020, 1:21 AM

#

i'm browsing the source code and I see this green cross a lot. anyone know what it is?

📎 green.PNG

#

oh wow i'm stupid. it's a god dang task. It's on every "todo" comment. my b

cold wigeon Sep 22, 2020, 2:34 PM

#

Having a real hard time tracking down what source file is doing this during packaging:
ERROR: Missing precompiled manifest for 'DerivedDataCache'.

#

DDC is not included in anything from what I can tell

#

Build fine in source built engines, but not binary

#

4.25.3

#

I can rebuilt the automation tool and unrealbuildtool etc, and drop it on top of the binary engine. So you guys have an idea, I'll happily edit and build one of the tools to spit out more debug

#

I tried to make unrealbuildtool spit out where its coming from, but I only see it building DDC, nothing about WHY

tired spade Sep 22, 2020, 4:38 PM

#

@bright olive not really sure where to ask this but recently I’ve discovered that overlay api calls don’t seem to be working with openvr/steamvr and ue4

#

Friends, wallet, etc

#

I’ve worked around the friends issue using the url method

#

But in order to support steam wallet and microtxn I’m not sure what to do as their doesn’t appear to be a way to authorize payment using the wallet due to the complete failure to call the overlay

#

I submitted a ticket on openvr git because steam doesn’t appear to have an formal method for steamworks api tickets

#

Any advice would be much appreciated

bright olive Sep 22, 2020, 5:09 PM

#

@tired spade I'm not sure, but that is definitely a concern for me too.

#

have you tried the example payment stuff that was added to shootergame? I'm not sure if it pulls up an overlay or what

tired spade Sep 22, 2020, 5:19 PM

#

Yeah

#

Also looking at the steamcore web example

#

@bright olive seems to work outside of steamvr module being loaded and running the steam app

#

I think it’s just busted like the friends overlay call with the openvr module loaded

#

I can confirm that steamcore and steamcore web steamworks api calls work in their examples running without the openvr module

#

I just don’t think they have anything handling overlay calls in steamvr at all

#

Kind of sucks because now I’m forced to look at some 3rd party transactional system

#

At least with friends I could use the url method

tired spade Sep 22, 2020, 6:49 PM

#

@bright olive looks like using steam web core in combination with inventory api might allow you to to the full in app purchasing logic

#

The issue comes from the wallet overlay not returning to allow you to complete the purchase and me not seeing an in game method to bypass

#

Might be something where the openvr/steamvr source could be modified to force a 2D overlay call instead of returning 0

#

Then send a msg to complete purchase in desktop mode

#

To the hmd.

#

Until the interface gets implemented I don’t see a resolution on this

#

Maybe a custom Interface to call the 2D overlay?

tired spade Sep 22, 2020, 7:18 PM

#

The only other thing would be to handle all purchases of inventory directly through steam before entering the game which isn’t ideal

bright olive Sep 22, 2020, 11:24 PM

#

@tired spade are any games using micro transactions in VR? Rec Room maybe?

#

I think you can purchase movies on big screen but have to go off to a third party site or something

tired spade Sep 22, 2020, 11:28 PM

#

Yeah they use playfab @bright olive

#

Or aws with a web service

#

But so far I’ve been able to setup steam inventory services and add items to the item store

#

I can sell those items from the steam hosted item shop from desktop

#

There just isn’t an in app purchasing option due to steamvr overlay interface returning 0

#

I’m wondering if a custom interface class can be made to call the 2D overlay even if the steamvr module is loaded

#

Instead of trying to call steamvr overlay

#

I can just call a widget to tell the user to complete the purchase in desktop mode

#

So far I’ve only seen vr apps working around the busted non working wallet overlay

#

Orbus, townshiptale, recroom etc all have non steam external purchasing APIs

bright olive Sep 22, 2020, 11:37 PM

#

@tired spade Does steam allow micro transactions that don't go through them? Or it is still through steam, just through the web api/token stuff?

tired spade Sep 22, 2020, 11:38 PM

#

Kind of sucks because I have a 9/10 rated F2P steamvr game and there doesn’t seem to be a lot of steamworks support on their own platform

#

Making it hard to monetize

#

It’s through them but you pass the token to a web payment server if you can’t access the wallet overlay (which vr seems to have issues with)

#

Meaning additional overhead

#

They offer a way to not have to do this for flat games “rust for example”

#

But again the steamvr api working with steamworks is “incomplete”

#

https://store.steampowered.com/itemstore/1144800/browse/?filter=all

Drop In - VR F2P on Steam

Drop In - VR F2P is a Free to play Low poly social game space. In Early Access players will be able to hang out in a lobby, play mini games, Squad up for Apoc, Zombies or Sandbox. Missions are being actively developed. DLC will unlock the full multiplayer capabilities with acc...

#

Got the store setup

#

Item list won’t populate until I generate the server key

#

They went down for maintenance but I should have that done soon

#

https://media.discordapp.net/attachments/519291948608126980/758031789158694952/image0.jpg

#

Basically this

#

I’m opting for the item store

#

And in game

#

Uses inventory services

sudden ingot Sep 23, 2020, 8:40 AM

#

Not sure where to post this, but it's an engine question.
I have like a dozen structs with 3 arrays each, two dozen variables and a bunch of arrays more that I write values to every frame. This is a recording application for motion tracking and after around 5 minutes the recorded values start to jump because of degraded performance. After recording is finished, all the data can be written out in a csv file.

Now I'm wondering why the performance degrades over time (and need to solve it somehow). Is it getting more expensive to access bigger arrays? Would it help to split the arrays into smaller arrays that I combine later on?

gloomy hamlet Sep 23, 2020, 9:22 AM

#

@sudden ingot It's because the arrays have to constantly reallocate themselves, then copy across the elements.
Decide on some reasonable number of elements and reserve each array to that capacity at the start. When they hit that size, move the contents somewhere else and begin again. Somewhere else could be an array of arrays, or merging to a bigger array/directly writing out to csv on a background thread.

elder falcon Sep 23, 2020, 9:26 AM

#

this seems like the kind of thing TChunkedArray was made for

#

it will allocate a new block every X elements so it never has to resize the full thing

#

you can still iterate it normally at the end

gloomy hamlet Sep 23, 2020, 10:01 AM

#

Yeah sounds ideal. Never even seen the name 😉

sudden ingot Sep 23, 2020, 11:57 AM

#

@gloomy hamlet @elder falcon Aha, thank you for the tips! Now just to test what a reasonable number is ;) Just so I understand correctly: The problem is resizing the array instead of using an array that already has, say a 1000, empty elements, correct?

elder falcon Sep 23, 2020, 11:57 AM

#

well I don't know what is your problem, I don't have access to your profiling data

#

I was just replying to the array resizing thing

sudden ingot Sep 23, 2020, 11:58 AM

#

Do you mean by that as well, that when I have a 1000 element array and resize it to 1001, it will copy over the 1000 elements despite them being at the beginning of the array and the 1001th is at the (new) last index?

#

Yeah, of course.

elder falcon Sep 23, 2020, 11:59 AM

#

are you manually resizing your arrays?

sudden ingot Sep 23, 2020, 11:59 AM

#

I'm adding onto them

#

Does that already resize? In BP

elder falcon Sep 23, 2020, 12:00 PM

#

it will use slack as expected then, roughly doubling in size every time it becomes full

sudden ingot Sep 23, 2020, 12:02 PM

#

I see, just reading up on it here.

#

If I'm using "Size to Fit" in the Set Array Elem node will that take slack into account or does a new reallocation happen? It sounds to me as if it would still use slack until it is at the new limit. Which, if it doubles, would gain a lot of leeway when the array goes from an allocated size of around 1k to 2k.

#

Looks like I will have to do some testing.

#

Thanks :)

gloomy hamlet Sep 23, 2020, 12:09 PM

#

No idea how the BP array nodes work. If you insist on doing this in BP, I think you'll need to have an array of structs of arrays, and append each array of, say 1000 elements, into it each time it fills up.

sudden ingot Sep 23, 2020, 12:09 PM

#

And unfortunately I can not really profile, because it requires hardware our company doesnt have. It's only at the customers location which has a heavy security on all its hardware stuff. So I'm doing too many things blind.

#

No idea how the BP array nodes work. If you insist on doing this in BP, I think you'll need to have an array of structs of arrays, and append each array of, say 1000 elements, into it each time it fills up.
@gloomy hamlet Yup, that is how it works right now. Minus the breakup of 1000 elements every time it fills.

gloomy hamlet Sep 23, 2020, 12:10 PM

#

Even assuming it's not resizing too often it doesn't help you, as there is still the occasional frame where it has to do a huge realloc, which grows over time. So you need to restrict the size of the array you're adding to.

sudden ingot Sep 23, 2020, 12:12 PM

#

Yeah, I will try that for sure.

#

Thank you too!

tired spade Sep 23, 2020, 1:21 PM

#

@sudden ingot might try pulling this logic into a library function and nativize

#

Bp is going to cost a tad just from running in the vm

#

Is this event driven, timed or tick?

#

Sounds like it’s got a high frequency of collection if it’s motion

sudden ingot Sep 23, 2020, 2:06 PM

#

@tired spade It's a quite complex system at this point, there is a lot of other data being recorded as well. I could try to separate parts into a library function, yeah. I'm primarily working in blueprints and aware that this is a prime candidate for C++, would need to outsource that. It's timed, but running every frame anyways once recording starts.

#

This is an example output

#

📎 unknown.png

#

📎 unknown.png

tired spade Sep 23, 2020, 2:07 PM

#

Wow 😳

sudden ingot Sep 23, 2020, 2:07 PM

#

This is a test recording, so these values are all 0 instead of Translations and Quats

tired spade Sep 23, 2020, 2:08 PM

#

Yeah it’s ticking every frame

sudden ingot Sep 23, 2020, 2:08 PM

#

Until you hit stop and export it, yup 😂

tired spade Sep 23, 2020, 2:08 PM

#

But pull that blueprint into a function library call and nativize it

#

It’d literally a check box

sudden ingot Sep 23, 2020, 2:08 PM

#

Yeah, I believe I tried that before.

tired spade Sep 23, 2020, 2:08 PM

#

Pick exclusive nativization

#

Not inclusive

#

And that way it nativizes that function only not your entire application

#

There are some quick and dirty guides out there on google to get you going

sudden ingot Sep 23, 2020, 2:10 PM

#

Yep. I'll try that again. But I believe I ran into problems last time.

tired spade Sep 23, 2020, 2:10 PM

#

No cpp knowledge needed

sudden ingot Sep 23, 2020, 2:10 PM

#

Even with exclusive.

#

This isn't the first time this topic has come up :I But yeah, I'll check it again.

tired spade Sep 23, 2020, 2:10 PM

#

Yeah if you try to nstivize the actor yes

#

But a function library should be easy

sudden ingot Sep 23, 2020, 2:11 PM

#

Oh, I see. Yeah, I have not tried only a function library.

tired spade Sep 23, 2020, 2:11 PM

#

It would only have the logic for the array manipulation

#

Similar to if you moved the function to cpp

#

And called it every frame

#

No difference here

sudden ingot Sep 23, 2020, 2:13 PM

#

Gotta pick it apart a bit first.

📎 unknown.png

#

I see

tired spade Sep 23, 2020, 2:13 PM

#

Just create a new function library bp

#

Add the function to the library

#

Copy and paste

#

Add your parameters

#

For inputs/outputs

#

It can be called from any actor at this point

#

Nativize the library

#

You shouldn’t even have to modify your old logic

#

Just point to the function when it’s ready

sudden ingot Sep 23, 2020, 2:16 PM

#

Alright, will try that :) Thank you for the info, very helpful.

tired spade Sep 23, 2020, 2:16 PM

#

Good luck 👍🏼

#

😎

sudden ingot Sep 23, 2020, 2:16 PM

#

:p

stable hemlock Sep 24, 2020, 11:18 AM

#

Is Visual Blend what I should use for compiling UT from source?

silver knot Sep 24, 2020, 12:08 PM

#

Is there a way to create a custom payment gateway in Unreal? I wish to evade the In-app purchase commissions , any suggestions?

tired spade Sep 25, 2020, 2:23 AM

#

@bright olive so inventory services and the item store seems to be working

#

Dead end is in app purchasing

#

VR overlay interface returns 0

#

Anything that calls steam overlay appears broken

#

The only path I’ve heard ppl say try is the web api to pass the purchase request but even then I think it calls validation through steam overlay

#

Outside of steam vr it’s fine but it’s dumb that you can’t handle in app purchasing

stable hemlock Sep 25, 2020, 2:26 AM

#

In app purchase is very touchy obtaining people's credit cards etc.

tired spade Sep 25, 2020, 2:26 AM

#

Yes but that’s what the overlay Interface was for

#

It pulled up the steam wallet through the overlay interface

#

Allowed you to confirm payment

#

You could build your own widget for the item shop and use steamworks api to enumerate through them

#

Pass the purchase request from the server using the api key

#

Call the overlay for authorization

#

It works still in all flat games

#

Just not VR

#

Rust is an example

#

And many others

#

The overlay interface call is handled differently when steamvr module is loaded

#

Breaking the interface

bright olive Sep 25, 2020, 2:35 AM

#

@tired spade I guess for mine I can tell them to relaunch in pure 2d mode, but that will probably cut conversions more than in half

tired spade Sep 25, 2020, 2:35 AM

#

Yeah it’s not ideal

bright olive Sep 25, 2020, 2:36 AM

#

I toggle in and out of VR when taking off or putting on the headset, but I don't think 2d overlay stuff works in that case when just toggled to 2d with VR system still loaded

tired spade Sep 25, 2020, 2:36 AM

#

They can always use the store before launching

#

But that again isn’t ideal

#

Oh yeah ... you can’t unload steamvr on the fly I don’t think

bright olive Sep 25, 2020, 2:37 AM

#

Sometimes I've had the 2d overlay pop up in the mirror view somehow

tired spade Sep 25, 2020, 2:37 AM

#

But yeah they can remove the headset and just use steam to buy

bright olive Sep 25, 2020, 2:37 AM

#

I'm not sure what causes it

tired spade Sep 25, 2020, 2:37 AM

#

But it’s kind of crappy

#

Cause I can list all the store items

#

Just can’t put a buy button in game

bright olive Sep 25, 2020, 2:38 AM

#

I don't mind too much if hey have to remove the headset, but it is bad if they have to switch to steam where I can no longer guide them and stuff

tired spade Sep 25, 2020, 2:38 AM

#

On flat it’s so easy

#

It literally pops up the wallet to authorize

#

In VR you just get nothing

bright olive Sep 25, 2020, 2:39 AM

#

Yeah if they have cash in wallet it should all work in VR, and if they have to add or authorize credit card it would be ok if they could do it through a 2d overlay

#

But if I have to explain 2 or 3 steps for them to go through in the steam window it probably cuts a lot of purchases

tired spade Sep 25, 2020, 2:40 AM

#

I’ve tried both steamcore and steamcore web

#

I’ve even written my own class instance

#

Just doesn’t seem like there is any way to handle

#

Doesn’t ue4 have a browser?

#

I wonder if I feed the item store url into a browser

#

Then render to a widget

#

Might be able to complete payment through it

bright olive Sep 25, 2020, 2:50 AM

#

Yeah, it wouldn't have their normal cookies so they would have to re-login I think

#

That would be better though because you could frame around it with instructions on how to do everything

tired spade Sep 25, 2020, 2:58 AM

#

📎 WebBrowserFunctions.png

#

@bright olive

#

Might be on to something

#

I think I "might" be able to use this in combination with steamcore to authenticate the user session

#

then go right to the store and purchase authorization for payment method

tired spade Sep 26, 2020, 7:22 PM

#

@bright olive

#

https://cdn.discordapp.com/attachments/519291948608126980/759247651308437514/unknown.png

#

boom

bright olive Sep 26, 2020, 7:22 PM

#

@tired spade nice, how?

tired spade Sep 26, 2020, 7:23 PM

#

steam beta

#

ue4.24.3

#

updated steamcore

#

call start purchase

#

pass in itemdef and qty

#

friends is still broken

#

but you can do something like this if you want

#

https://cdn.discordapp.com/attachments/519291948608126980/759251691404525648/unknown.png

#

https://cdn.discordapp.com/attachments/519291948608126980/759251457291321384/unknown.png

#

I can't really take all the credit its been a few days of collaborating with @stable hemlock

#

really talented guy 🙌

limber jacinth Sep 26, 2020, 8:28 PM

#

how was all the previous chats related to engine source o_0

stable hemlock Sep 26, 2020, 8:51 PM

#

Lmao those are all my screenshots

tired spade Sep 26, 2020, 11:41 PM

#

@limber jacinth we were thinking the steamvr overlay issue might be tied to the overlay interface call in source

#

Sorry if this was the wrong place

next dirge Sep 27, 2020, 6:53 AM

#

can anyone help with compiling UE4 from source?

#

C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Microsoft.MakeFile.Targets(44,5): error MSB3073: The command "....\Build\BatchFiles\Build.bat -Target="UE4Editor Win64 Development" -Target="ShaderCompileWorker Win64 Development -Quiet" -WaitMutex -FromMsBuild" exited with code 6.
1>Done building project "UE4.vcxproj" -- FAILED.

fervent osprey Sep 27, 2020, 8:50 AM

#

https://answers.unrealengine.com/questions/986157/view.html here I have a question

next dirge Sep 27, 2020, 10:00 AM

#

Already tried

next dirge Sep 27, 2020, 12:53 PM

#

📎 20200927_182243.JPG 📎 20200927_182221.JPG

stoic crane Sep 27, 2020, 2:17 PM

#

you're running out of memory, like the error says.

next dirge Sep 27, 2020, 3:06 PM

#

Anyway to solve it?

stoic crane Sep 27, 2020, 3:07 PM

#

upgrade your computer? start with making your pagefile bigger?

next dirge Sep 27, 2020, 3:07 PM

#

It compiled once btw

#

But i thought something is wrong and tried recompilling and it never compiled again

#

Are u sure that's the only problem?

stoic crane Sep 27, 2020, 3:10 PM

#

📎 unknown.png

#

📎 unknown.png

#

i mean, it's in your screenshots

next dirge Sep 27, 2020, 3:11 PM

#

C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Microsoft.MakeFile.Targets(44,5): error MSB3073: The command "....\Build\BatchFiles\Build.bat -Target="UE4Editor Win64 Development" -Target="ShaderCompileWorker Win64 Development -Quiet" -WaitMutex -FromMsBuild" exited with code 6.
1>Done building project "UE4.vcxproj" -- FAILED.

hidden hedge Sep 27, 2020, 9:54 PM

#

this happens to me occasionally and i have 64GB of RAM, you just have to keep redoing it until it eventually works

mint vault Sep 28, 2020, 8:10 AM

#

I have engine build from source but I cannot build ligthing. Light compile worked previously, but then I had to rebuild the engine, during the rebuild progress my install drive ran out of space and I haven't been able to get the light build to work after that even by rebuilding the engine and unreal lightmass. Is there some files I can remove to make the rebuild of unreal lightmass even more pure than hitting the rebuild button in visual studio?

#

Found the problem. embree.dll had wrong name in the binaries/win64 folder of the engine

brisk silo Sep 28, 2020, 3:27 PM

#

For the people who might be interested, ive been busy this last couple months writing an in depth Vulkan graphics tutorial, showing how to build a small engine from scratch. Right now it lacks the final chapter, but there is a whole lot of content there, and im looking for some feedback

#

https://www.vkguide.dev/

Vulkan Guide

Home

Guide to the Vulkan API

#

If you ever wanted to learn about vulkan, this can be a good opportunity, as ill answer the questions directly

gloomy hamlet Sep 28, 2020, 7:22 PM

#

@brisk silo Looks great! I'm completely out of the loop with rendering, but reads very clearly, nice job.

#

Is the thing with it having no concept of a frame normal nowadays, or unusual? I guess it means it's trying to be more of a general GPU API than merely a 3D rendering API?

brisk silo Sep 28, 2020, 7:26 PM

#

yup, vulkan does indeed not have concept of frames

#

swapchain stuff, (which is the whole frame stuff) is a system extension

#

you can use vulkan in pure headless mode, without even opening a window, just rendering stuff into files

#

hell its not even hard to do it

#

i was thinking of starting the tutorial by showing how to use compute shaders to draw a fractal, and save it into a file

gloomy hamlet Sep 28, 2020, 7:29 PM

#

Makes me a bit nostalgic. DirectX was pretty much where I started programming. 7 or 8, maybe? Pretty much haven't done any low level graphics programming since 😉

#

To be honest I was so out of the loop, I had assumed Vulkan was mobile only...

brisk silo Sep 28, 2020, 7:31 PM

#

well its vulkan and desktop

#

but a lot of its design is like that due to mobile

#

in fact, to use vulkan effectively

#

the idea is to go full bindless

#

essentially full "AZDO"

#

approaching zero driver overhead

#

DrawIndirect the fuck out of everything, use bindless textures, stuff literally all the meshes of your engine into 1 vertex buffer

#

thats what Doom does

gloomy hamlet Sep 28, 2020, 7:39 PM

#

Is the idea of that to reduce the CPU use for issuing draw calls?

brisk silo Sep 28, 2020, 7:41 PM

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it also goes super fast on the gpu

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the thing to know in modern graphics rendering

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is that the gpu is a monster

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an absolute monster

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so much of a monster that you will likely not even put it at 100% usage

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to do so, you generally have to do very fat drawcalls

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draw indirect that does a lot of objects at once

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lots of vertices/pixels etc

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big compute shaders

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that sort of thing

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fat commands let the gpu reach full utilization

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tho vulkan commands are very low overhead

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but the fun thing with AZDO techniques, is that they allow further trickery

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for example, you can do LOD selection and occlusion culling on compute shaders

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and let the gpu find its own work

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doom does that

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they do culling on the gpu, not on the cpu

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cpu only does a very basic part of the culling

gloomy hamlet Sep 28, 2020, 7:46 PM

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Makes sense. Yeah I watched a talk on parallelization recently where they had a graphic showing the distribution of processing power on a typical PC, pretty ridiculous really.

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Do you think it's likely Nanite is doing something along those lines?

brisk silo Sep 28, 2020, 7:47 PM

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its doing it

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absolutely

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the thing with nanite is that it also has some fancy compute shader stuff for very dense meshes

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but for not so dense meshes, its doing draw indirect stuff

gloomy hamlet Sep 28, 2020, 7:49 PM

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Right. Yeah still can't quite get my head around whether the 'no more LODs' thing really means exactly that.

brisk silo Sep 28, 2020, 7:49 PM

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thats a different thing, its definitely doing lods, just automatically or with some fancy things

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the important thing, is "no more object merging"

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because the engine and gpu will render all objects of the same material at once

gloomy hamlet Sep 28, 2020, 7:50 PM

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Yeah, but from user/content creation side.

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Ah, like automatic instancing?

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Or draw call merging I guess, I suppose instancing of geometry is a bit different.

brisk silo Sep 28, 2020, 7:51 PM

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yes, like automatic instancing

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except it also merges multiple different meshes

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as long as they have the same material

gloomy hamlet Sep 28, 2020, 7:52 PM

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Right, yeah sounds interesting. Been working on some procedural generation stuff on and off for a while, so been giving a bit of thought to how that might fit in with next-gen rendering. But I'm a ways off actually experimenting still anyway.

thick storm Sep 28, 2020, 9:15 PM

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@gloomy hamlet from user perspective you just as well forget something like lod ever existed. That's 100% sure

gloomy hamlet Sep 28, 2020, 9:40 PM

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Right, seems that way. Was wondering if the same will apply to procedurally generated meshes. Potentially can do some clever stuff there with higher level information, but seems like perhaps that won't really be worth it and just pumping out max res, cooking as regular static mesh and letting next gen tech take over will end up being the most efficient.

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Which would be a bit disappointing ;)

fierce moss Sep 29, 2020, 12:27 AM

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Hello! I need help editing Config/DefaultDeviceProfile.ini. The file has settings for each platform but it doesn't say anything about build config on that platform. I wanted to know if there's a way to check for build configuration and add settings based on it?

thick storm Sep 29, 2020, 5:53 AM

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@gloomy hamlet It might, but there is other problem. How efficient would be generating mesh with 1mln triangles ? [;

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But once you have mesh it's source doesn't matter

grizzled geyser Sep 29, 2020, 7:44 AM

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Anyone ever used fastbuild with UE4? I can't get it to work, just getting multiple errors like this:
6> Failed to build Object. error : 4294967295 (0xffffffff) Target: ...

gloomy hamlet Sep 29, 2020, 8:16 AM

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@thick storm Ah I meant more offline procedurally generated but with custom representation and render component/shader, didn't mean to imply generating all the data on the fly. But tbh the system I'm working on is not likely to fit for really high fidelity stuff anyway, so rendering performance probably not likely to be so critical anyway.

thick storm Sep 29, 2020, 8:26 AM

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from what I know

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if you have static geometry

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there is no reason to not go nanite path

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once you have the mesh, everything else is automated

gloomy hamlet Sep 29, 2020, 9:24 AM

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Yep, does indeed look that way. Gonna be interesting to play around with. How compatible will the approach be with Chaos/dynamic destruction for example...

celest viper Sep 29, 2020, 4:55 PM

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Is there any world where I can / should use the Animation Montages Parent Asset for montages on different skeleton? Trying to avoid having to dupe notify timing and other info across several differently sized body types

pliant light Sep 30, 2020, 11:33 PM

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can someone help me with source control please

spiral mortar Sep 30, 2020, 11:37 PM

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#source-control

opaque lotus Oct 1, 2020, 4:14 AM

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Has anyone successfully built the 4.25.3 engine and iOS apps using Xcode 11.7?

high fog Oct 1, 2020, 9:24 AM

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im getting a error with the compiling with Fastbuild: Failed to spawn process for 'C:\UE4\Engine\Intermediate\Build\Win64\UnrealHeaderTool\Development\BuildSettings\BuildSettings.cpp.txt.dummy' how can i solve this

half talon Oct 1, 2020, 8:45 PM

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Anyone know where to submit changes to SteamAudio? I've exposed Phonon components to other C++ modules, fixed a dynamic scene crash, and added linux support.

dense helm Oct 1, 2020, 8:56 PM

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GetOuterAPlayerController() where is the implmentation of this function?

opaque lotus Oct 2, 2020, 12:35 AM

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For anyone curious, it took about 18 small changes. Mostly ensuring container iterator for loops gave references for (auto blah& : stuff) and then there was a couple of execution dependent issues for incrementing a variable, which just required shifting the increment to be on it's own line to ensure correctness, rather than using the variable twice in the same line, once with a postfix ++

high fog Oct 2, 2020, 9:22 AM

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@ocean inlet Can you help em maybee with this problem: Failed to spawn process for 'C:\UE4\Engine\Intermediate\Build\Win64\UnrealHeaderTool\Development\BuildSettings\BuildSettings.cpp.txt.dummy' how can i solve this

final wasp Oct 2, 2020, 6:07 PM

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Hi All - this may be a dev studio issue - I'm getting the following:

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SharedPCH.CoreUObject.ShadowErrors.h.pch' precompiled header file is from a different version of the compiler, or the precompiled header is C++ and you are using it from C

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I've rerun setup.bat, regenerated the project files, and deleted the pch before retrying - the build recreates the pch and then I'm getting that error. I'm using dev studio 2019 - ... help? 🙂

ocean inlet Oct 2, 2020, 9:38 PM

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@high fog Unsure sorry

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SharedPCH.CoreUObject.ShadowErrors.h.pch' precompiled header file is from a different version of the compiler, or the precompiled header is C++ and you are using it from C
@final wasp Try selecting rebuild for your target project in VS

final wasp Oct 3, 2020, 5:21 AM

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rm -rf UnrealEngine

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git clone git@github.com:ScottKirvan/UnrealEngine.git

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start again... sigh

high fog Oct 3, 2020, 9:42 AM

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@elder moat i got it working so far only the FBWorker on the laptop is not working

junior parrot Oct 3, 2020, 4:42 PM

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i build engine from source code, how should i setup profile to able set a break points in source code of engine? when im run solution its started and shutdown immediately

final wasp Oct 3, 2020, 7:01 PM

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@junior parrot under Debug menu - use "Attach to Process"

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... startup the app outside dev studio (assuming you're on windows, I guess), and then attach to the process

junior parrot Oct 3, 2020, 7:13 PM

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tyvm

serene yew Oct 3, 2020, 11:24 PM

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I am building my project as DebugGame Editor, and yet, when it crashes, I don't seem to have a stack trace available... All I get is this (this is the very last few lines, from when something goes wrong onward):

2020-10-03 15:45:42.708704-0700 UE4Editor-Mac-DebugGame[42826:1731956] [UE4] [2020.10.03-22.45.42:708][571]LogOutputDevice: Warning: 

Script Stack (0 frames):
2020-10-03 15:45:42.708854-0700 UE4Editor-Mac-DebugGame[42826:1731956] [UE4] Fatal error: [File:/Users/build/Build/++UE4+Licensee/Sync/Engine/Source/Runtime/CoreUObject/Private/UObject/UObjectGlobals.cpp] [Line: 2518] 
None is not being constructed with NewObject.
2020-10-03 15:46:02.385695-0700 UE4Editor-Mac-DebugGame[42826:1731956] [UE4] [2020.10.03-22.46.02:385][571]LogMac: Error: appError called: Fatal error: [File:/Users/build/Build/++UE4+Licensee/Sync/Engine/Source/Runtime/CoreUObject/Private/UObject/UObjectGlobals.cpp] [Line: 2518] 
None is not being constructed with NewObject.
2020-10-03 15:46:02.901947-0700 UE4Editor-Mac-DebugGame[42826:1731956] [UE4] [2020.10.03-22.46.02:901][571]LogMac: === Critical error: ===
2020-10-03 15:46:02.902061-0700 UE4Editor-Mac-DebugGame[42826:1731956] [UE4] [2020.10.03-22.46.02:902][571]LogMac: Fatal error: [File:/Users/build/Build/++UE4+Licensee/Sync/Engine/Source/Runtime/CoreUObject/Private/UObject/UObjectGlobals.cpp] [Line: 2518] 
None is not being constructed with NewObject.
2020-10-03 15:46:02.920143-0700 UE4Editor-Mac-DebugGame[42826:1731956] [UE4] [2020.10.03-22.46.02:920][571]LogExit: Executing StaticShutdownAfterError
2020-10-03 15:46:02.921167-0700 UE4Editor-Mac-DebugGame[42826:1731956] [UE4] [2020.10.03-22.46.02:921][571]LogMac: FPlatformMisc::RequestExit(1)

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Only engine code, none of my code... I must be doing something wrong, right?

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And sorry if this question is in the wrong channel... there is no #build channel so I looked and this was as close as I could find to the proper place to ask

elder falcon Oct 3, 2020, 11:39 PM

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you hit an assert

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trying to construct a UObject without using NewObject

woven magnet Oct 4, 2020, 9:38 AM

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So, I'm trying to make my own custom engine build.
When building the engine inside VS, I get like 3,9k actions and I guess this number depends on modules, plugins, thirdparty stuff that needs to be build.
However, I would like get this number down. Is there any file where I can just tell UBT to exclude stuff? 🤔

spiral mortar Oct 4, 2020, 7:37 PM

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@woven magnet make sure you only build your project

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That way you won't build plug-ins you don't need

hidden hedge Oct 4, 2020, 8:04 PM

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^, you can also disable some default plugins like paper2d, source code access, source control, and importers (you know, the ones you don't use)

woven magnet Oct 4, 2020, 8:47 PM

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interesting, I thought I could do this before creating the first project,
like you can disable plugins in your .uproject file, but I was wondering if the engine had such a file so these default plugins like paper2d won't even show up if you create a project,
I could for example already strip out ios, android, linux dependencies and reduce setup.bat download size from 11gb to 4gb, believing that this stuff won't show while building

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but I did not check what stuff will be compiled when my project uses the custom build, thanks for pointing that out, because I would have not proceed any further ❤️

hidden hedge Oct 4, 2020, 9:14 PM

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well there's a lot of defaults which not everyone needs, like all the VR stuff

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UGS does take the pain out of syncing specific platforms without needing virtual streams in perforce

distant olive Oct 4, 2020, 10:06 PM

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Hi everyone! Can you please tell me, I'm a relatively newbie here, how often are pull requests with fixes or features reviewed on GitHub?

hidden hedge Oct 4, 2020, 10:08 PM

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Basically never, I think the only way to fast track something is if you’re a licensee with UDN access and you post your fix there

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It also depends on the scope of your changes

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If the changes are very simple then it might not take as long

distant olive Oct 4, 2020, 10:11 PM

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It is sad. The changes are minor. In one commit. A couple of lines. But annoying bugs are fixed.

hidden hedge Oct 4, 2020, 10:12 PM

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do you have a link to it?

distant olive Oct 4, 2020, 10:12 PM

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Yes. One moment

hidden hedge Oct 4, 2020, 10:13 PM

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📎 unknown.png

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that'll explain why

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1k backlog

distant olive Oct 4, 2020, 10:14 PM

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Small bug - small fix: https://github.com/EpicGames/UnrealEngine/pull/7371
For the second week, the master has not been compiled on MSBuild - again small fix: https://github.com/EpicGames/UnrealEngine/pull/7392
One small feature: https://github.com/EpicGames/UnrealEngine/pull/7372

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I see. And it saddens (((

hidden hedge Oct 4, 2020, 10:15 PM

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first one is trivial and includes a gist with a unit test, but it's "only" 5 days old