#engine-source | Unreal Source | Page 40

obsidian elbow Jun 20, 2020, 7:47 PM

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thank you @elder falcon i've been looking for this answer everywhere

red nymph Jun 22, 2020, 6:58 PM

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How does one rebuild all engine third party libs for the HTML5 target?

setup as follows:
UE 4.23 sourcecode compiled locally
I changed the used emscripten + llvm versions used
removed *.bc files in UnrealEngine/Engine/Source/ThirdParty/[SomeLib]/HTML5/
want to rebuild them from either the UE.sln or some dummy project targeting HTML5 (if I do the last, the build just fails since it expects the libs to already be built for HTML5)

red nymph Jun 22, 2020, 8:06 PM

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Seems like one does not locally build third party libs, but gets the compiled versions through Setup.bat -> GitDependencies.exe.
Can this be changed?

fresh stump Jun 23, 2020, 4:30 AM

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Is anyone using Unreal Game Sync? Is it worth using?

tawdry orbit Jun 23, 2020, 6:14 AM

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Currently im with an HDD.

In compiling the engine does it make a difference a nvme ssd than Sata III?

spiral mortar Jun 23, 2020, 6:47 AM

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nvme is better

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If you have a crappy CPU won't make a difference - if you have a proper CPU it will

tawdry orbit Jun 23, 2020, 7:20 AM

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I have a i7 7700 4/8 cores

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@3.60

spiral mortar Jun 23, 2020, 7:36 AM

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SATA will do just fine then I'd say 🙂

crude furnace Jun 23, 2020, 7:38 AM

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Hey folks, just wanted to start with a new project and tried googling the issue to no avail. On a first person starter project on Mac I'm getting this issue when trying to open and build the project for the first time. I'm trying to store the project on an external SSD in ExFAT format if that matters.

📎 Screenshot_2020-06-23_at_09.36.03.png

tardy pollen Jun 23, 2020, 11:42 AM

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is it possible to remove icons from the toolbar ?

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I mean ofcourse its possible, but is there a guide or a resource?

last swallow Jun 23, 2020, 7:19 PM

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hi i don't know where else to ask really, i am trying to connect my github account, i click connect, loads of redirects happen and i ended back on the accounts page not being connected with github, anyone have any idea what could be the problem?

tawdry orbit Jun 23, 2020, 7:27 PM

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Are you doing it from the web?

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Try relaunching your web browser

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Make sure to open unreal webpage and log in before connecting

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and then log in on github

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After that try connecting the accounts

wicked pawn Jun 23, 2020, 9:09 PM

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I am trying to package my plugin, and i get this error
ERROR: Platform Android is not a valid platform to build. Check that the SDK is installed properly.
my .plugin looks like this
"TargetPlatforms": [
"Win64",
"Win32"
]

why am i still getting this error above if my target platforms arent android?

tawdry orbit Jun 23, 2020, 9:22 PM

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What SDKs have you installed for visual studio?

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did you install support for android?

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I hope this thread helps you

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https://stackoverflow.com/questions/61259633/error-packaging-an-unreal-engine-code-plugin-remote-compiling-requires-a-server

Stack Overflow

Error packaging an Unreal Engine code plugin: Remote compiling requ...

I am trying to package a code plugin for Unreal Engine but, it keeps failing to build with the error:

ERROR: Remote compiling requires a server name. Use the editor (Project Settings > IOS) to ...

last swallow Jun 23, 2020, 9:54 PM

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@tawdry orbit thanks, i've done all of that and still no joy, i've located a post saying the same thing and epic support had to do something their side

tawdry orbit Jun 23, 2020, 10:14 PM

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Make sure to at least have installed these guys

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📎 unknown.png

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on Visual Studio

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and just make sure even if you wont need them that these are installed:

"C++ Android development tools"
"Visual Studio Android support for Unreal Engine"
"Android NDK (R12B)"
"Android SDK setup (API level 23) (local install for Mobile development with JavaScript / C++)"
"Microsoft distribution OpenJDK "

tardy pollen Jun 24, 2020, 10:56 AM

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eeeh, who thought that deleting two icons from the toolbar requires editing 4+ files

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📎 unknown.png

boreal jungle Jun 25, 2020, 5:08 AM

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How do you build engine source with VSCode? ( or from command line )

fresh coral Jun 25, 2020, 12:28 PM

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easiest way is probably to invoke msbuild against the solution file

boreal jungle Jun 25, 2020, 1:09 PM

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Thank you @fresh coral that worked. Only issue now is I can't find an executable to run it with or a debug configuration.

fresh coral Jun 25, 2020, 1:22 PM

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you'll need to provide the msbuild command line parameters if you want to build other configurations

marble rune Jun 25, 2020, 1:43 PM

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I copied a plugin to my project folder, and under a launch build it shows up in Content Browser okay

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📎 unknown.png

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But the same project under a source build doesn't show these at all

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📎 unknown.png

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4.25.1 on both Launcher/Source builds, any idea's why this is happening?

fresh coral Jun 25, 2020, 3:12 PM

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you have "show plugin settings" enabled in the content viewer?

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I'm not sure offhand where its persisted but I don't think it's shared between the launcher and source editor

brave walrus Jun 25, 2020, 11:45 PM

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Hello all

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Do any of you have experience in modifying the source code... ? After the initial build, every small change I make, an additional build is taking tens of minutes... How can I decrease the build time ?? Thanks !!

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I had already changed the build configuration to build only UE4, but even after that it takes tens of minutes (3672 jobs / modules)... How can one develop like that .. 😟

spiral mortar Jun 26, 2020, 12:04 AM

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Don't change engine headers @brave walrus

brave walrus Jun 26, 2020, 12:05 AM

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Didn't change headers... Only changed the modules to be built

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Under configuration manager

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📎 Capture.JPG

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Only kept UE4

📎 Capture2.JPG

spiral mortar Jun 26, 2020, 12:07 AM

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You shouldn't have to change that

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Just pick your project

brave walrus Jun 26, 2020, 12:09 AM

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I don't follow... this is the source code I'm modifying. Didn't create a game project yet.

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Ok I added it all back.

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But do I really have to wait for full rebuild everytime I want to test my changes ?

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It's the source code...

spiral mortar Jun 26, 2020, 12:12 AM

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Why are you modifying the source code if you don't have a game project?

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How are you testing it?

brave walrus Jun 26, 2020, 12:14 AM

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Only manually. Once I'll make the changes I will test it out with a project.

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Of course I will do it incrementally. So once I'll make the initial changes - I'll test it out manually in the project.

spiral mortar Jun 26, 2020, 12:15 AM

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You should create a dummy project

brave walrus Jun 26, 2020, 12:15 AM

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But I'm totally not there yet... every small change in engine source takes forever to compile

spiral mortar Jun 26, 2020, 12:15 AM

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What's your CPU

brave walrus Jun 26, 2020, 12:15 AM

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just a sec

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Intel i7 - 7700HQ 2.8GHz with 16 GB of Ram

spiral mortar Jun 26, 2020, 12:16 AM

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That's on the slow side sadly

brave walrus Jun 26, 2020, 12:16 AM

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laptop

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You think the hardware is the problem ?

spiral mortar Jun 26, 2020, 12:18 AM

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Making engine changes is always going to take a while

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if you have a dummy project and only compile that project, less modules will be compiled (less plugins etc)

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But with a 7700HQ you won't get far

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Do you really need to edit the engine

brave walrus Jun 26, 2020, 12:19 AM

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I can create a dummy project... but the changes are in the source not in the project..

spiral mortar Jun 26, 2020, 12:19 AM

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Doesn't matter - will still be faster

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But you should really consider using launcher builds

brave walrus Jun 26, 2020, 12:20 AM

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Yeah I tend to agree... But I don't want capsule collision for my character

spiral mortar Jun 26, 2020, 12:20 AM

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😐 no need to edit the engine for changes like that

brave walrus Jun 26, 2020, 12:21 AM

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Character only takes Capsule collision

spiral mortar Jun 26, 2020, 12:21 AM

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Then make your own character class

brave walrus Jun 26, 2020, 12:21 AM

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Right... but then I will have to implement Movement Component

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CharacterMovementComponent

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But Character movementComponent is heavily tied to the Capsule implementation

spiral mortar Jun 26, 2020, 12:22 AM

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You could copy paste and rename the engine ones

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as a starting point

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Just feels very wrong to edit the engine for a custom character behavior

brave walrus Jun 26, 2020, 12:23 AM

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I actually looked into that... but some key Macros only work in an 'Engine environment'

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for example

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struct ENGINE_API FFindFloorResult

spiral mortar Jun 26, 2020, 12:23 AM

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😐

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Replace ENGINE_API with YOURPROJECT_API

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done

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I'm sure there are tutorial explaining how to do non-capsule characters

brave walrus Jun 26, 2020, 12:24 AM

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You will be surprised

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You can't use the CharacterMovementComponent without a capsule

spiral mortar Jun 26, 2020, 12:25 AM

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No that makes sense

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make your own

brave walrus Jun 26, 2020, 12:26 AM

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I understand, but as I said - I'm afraid some macros only work in Engine environments

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mmm... maybe I could try out your approach

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I will need to make a new macro file as well

spiral mortar Jun 26, 2020, 12:27 AM

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naaaah

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the _API macros are automatically generated

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that's C++ basics in Unreal

brave walrus Jun 26, 2020, 12:28 AM

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yeah a lot of them do

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but as I said - try struct ENGINE_API FFindFloorResult

spiral mortar Jun 26, 2020, 12:29 AM

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WELL YES

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If you use ENGINE_API outside of the Engine module it won't work

brave walrus Jun 26, 2020, 12:29 AM

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It leads to a PCH.Engine.h file

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#define ENGINE_API DLLEXPORT

spiral mortar Jun 26, 2020, 12:30 AM

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😐

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https://docs.unrealengine.com/en-US/Programming/Modules/API/index.html

Module API Specifiers

Exposing classes and functions to other modules.

brave walrus Jun 26, 2020, 12:31 AM

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mmm... reading just a sec

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So basically

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If I import "Engine.h"

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I will get the macro ??

spiral mortar Jun 26, 2020, 12:35 AM

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facepalm

brave walrus Jun 26, 2020, 12:36 AM

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I will definitely check 🙂

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Thank you !

brave walrus Jun 26, 2020, 12:54 AM

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Hi

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I am seeing something really strange..

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just a sec

tepid star Jun 26, 2020, 1:20 AM

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So which branch is 4.25.1 ? cuz I dont see that I see a weirdo branch named 4.25-plus ?

fresh coral Jun 26, 2020, 1:40 AM

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if you're building your own movement component, with the code in your own project, you won't mark it with ENGINE_API

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@tepid star it's just 4.25, they don't make new branches for the hotfixes

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but if you're looking for the code that corresponds with what is shipped in launcher builds, you're looking for release

tepid star Jun 26, 2020, 1:44 AM

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right on thanks.. guess i'm confused because I was attempting to build the dedicated server... ( I didnt have the full source from github ) and it told me you can't build the server with this engine.. so I was like wthell? Ended up seeing that I needed the full source, went got the 4.25 branch, pulled it down -- built it.. worked like a charm. Went to my project, changed the version of the engine to my source version, built the server -- 100% no issues... then I wanted to work on my game some more, so I opened up the editor i've been using for last like weeks.. and it said it wasn't the same engine version.. so I was curious... wtf? do I need to build my engine from the source now.. or whats it talkin bout

fresh coral Jun 26, 2020, 1:45 AM

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yeah you can't build dedicated servers from launcher versions, since it's relatively rare use case and including the required binaries would grow the download too much

tepid star Jun 26, 2020, 1:45 AM

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yeah thats fine, my only issue is now, that I want to dev some more on the game ( through the editor ) how .. do I?

fresh coral Jun 26, 2020, 1:46 AM

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you can launch UEEditor.exe direction from the binaries/win64 directory in your source tree

tepid star Jun 26, 2020, 1:46 AM

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well I did compile the editor and launched it ( it took for-freaking-ever at 39% ) but it did just launch and work fine, lol

fresh coral Jun 26, 2020, 1:46 AM

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or you can double click on your uproject file, now that you've retargted it

tepid star Jun 26, 2020, 1:47 AM

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cool.. thanks guess I was just impatient

fresh coral Jun 26, 2020, 1:47 AM

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or you can run the editor from visual studio or the IDE of your choice

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because it's a new build it has to rebuild all of the shaders, your project is going to do the same thing when you open it for the first time

tepid star Jun 26, 2020, 1:47 AM

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yeah I didnt know how that would work if it was running through the IDE in debugger mode, and then also trying to hot-reload C++ modules... lol this is my first-go aroundish with this... ecosystem

fresh coral Jun 26, 2020, 1:48 AM

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I hardly ever run the editor directly under the debugger, if I need to debug I'll attach the debugger to the process and then PIE

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or do a standalone build

tepid star Jun 26, 2020, 1:48 AM

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Appreciate the responses for sure

marble rune Jun 26, 2020, 6:38 AM

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you have "show plugin settings" enabled in the content viewer?
@fresh coral Thanks dude, I thought that was stored per project in the config folder, perhaps now. I feel dumb now.

nocturne compass Jun 26, 2020, 2:59 PM

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does anyone know how to get the manually specified BuildId working??
https://docs.unrealengine.com/en-US/Programming/BuildTools/UnrealBuildTool/VersioningofBinaries/index.html

this is what my Build.version looks like

    "MajorVersion": 4,
    "MinorVersion": 25,
    "PatchVersion": 1,
    "Changelist": 0,
    "CompatibleChangelist": 13144385,
    "IsLicenseeVersion": 0,
    "IsPromotedBuild": 0,
    "BranchName": "++UE4+Release-4.25",
    "BuildId": "7CA6ABDC-940B-462D-8C62-63857B59F7F9"
}```

Versioning of Binaries

Reference for Unreal Engine's BuildID system, which mitigates potential errors that may result from outdated DLL files.

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it seems no matter what I try I can't get the project I open with my source engine to have that as their engine association?

dense helm Jun 26, 2020, 4:44 PM

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Hello,
Anyone can tell me where the navmesh is generated (tiles) ?
thx

dusty inlet Jun 26, 2020, 8:39 PM

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Why Every vulkan function in unreal is contained inside VulkanRHI namespace ?

tardy pollen Jun 27, 2020, 8:46 AM

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does anyone else face crashes

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"out of video memory"

queen mural Jun 27, 2020, 8:46 AM

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yes

tardy pollen Jun 27, 2020, 8:46 AM

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where my video memory is 4gb and not much of it is used

queen mural Jun 27, 2020, 8:47 AM

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for me it happens only sometimes when i use the engine on Cinematic graphics

tardy pollen Jun 27, 2020, 8:47 AM

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well it happened on a brand new "empty" project

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I had a couple of actors, animations

queen mural Jun 27, 2020, 8:47 AM

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I have a fairly strong PC

tardy pollen Jun 27, 2020, 8:47 AM

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then it "randomly" crashed, and my screen went black

queen mural Jun 27, 2020, 8:47 AM

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and it's 8gb ram so it can handle the engine abit better

tardy pollen Jun 27, 2020, 8:48 AM

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i7 4790k
8gb ram
GTX 1050 TI

queen mural Jun 27, 2020, 8:48 AM

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k hold up

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um

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I belive it's sometimes random

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One time i undone an action where i Moved a Large Model and it crashed

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I myself don't really mind crashes. As long as they don't corrupt anything you should be good

tardy pollen Jun 27, 2020, 8:51 AM

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hummm

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I'm now considering Godot

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if these crashes happen frequently

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what would happen when i publish my game to mobile

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is it gonna be stable ?

stable hemlock Jun 27, 2020, 9:58 AM

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Someone said they started crashing after the updating to windows 10 2004

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not sure if they were using the newest drivers, or the hardware managed video memory, but it was an update specific out of memory error

tardy pollen Jun 27, 2020, 10:46 AM

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funny enough that I can't update my windows 10 to 1908 or smth

dusty inlet Jun 27, 2020, 11:11 AM

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after 30 min trying to understand the purpose of this code


    TArray<float> QueuePriorities;
    QueuePriorities.AddUninitialized(NumPriorities);
    float* CurrentPriority = QueuePriorities.GetData();
    for (int32 Index = 0; Index < QueueFamilyInfos.Num(); ++Index)
    {
        VkDeviceQueueCreateInfo& CurrQueue = QueueFamilyInfos[Index];
        CurrQueue.pQueuePriorities = CurrentPriority;

        const VkQueueFamilyProperties& CurrProps = QueueFamilyProps[CurrQueue.queueFamilyIndex];
        for (int32 QueueIndex = 0; QueueIndex < (int32)CurrProps.queueCount; ++QueueIndex)
        {
            *CurrentPriority++ = 1.0f;
        }
    }
``` i just discovered it is useless

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https://github.com/EpicGames/UnrealEngine/blob/release/Engine/Source/Runtime/VulkanRHI/Private/VulkanDevice.cpp#L293

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if we wont use the queuePriority why not just assign the pointer to float prio = 1.f;

tardy pollen Jun 27, 2020, 11:30 AM

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Sorry I couldn't help but laugh

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damn that hits hard

unborn monolith Jun 27, 2020, 3:06 PM

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How could i overload the instanced mesh struct from the engine but in the game source?

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like, can you change the https://docs.unrealengine.com/en-US/API/Runtime/Engine/Components/UInstancedStaticMeshComponent/index.html component somehow so i can change one of the functions that is not virtual? ,...i m wondering about that

UInstancedStaticMeshComponent

A component that efficiently renders multiple instances of the same StaticMesh.

elder falcon Jun 27, 2020, 3:13 PM

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no

lunar gazelle Jun 27, 2020, 3:56 PM

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is it possible to disable hot-reload on UE builded with source

tardy pollen Jun 27, 2020, 4:11 PM

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📎 unknown.png

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i have again faced the VRAM issue, this time i took a screenshot with the vram not being completely used

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I narrowed it down to Animation retargeting, sadly I can't use the Visual studio to debug this one

daring river Jun 27, 2020, 4:46 PM

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Hi,
I keep getting these errors! Being a blueprint guy have no idea what to do with this! Unfortunately I have to build UE4 from a source for a project!
It's UnrealEngine-4.25-plus on Win10, VS2019, PS4:SDK 7.508.001

📎 Annotation_2020-06-27_125515.png

hidden hedge Jun 27, 2020, 9:01 PM

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since it's related to PS4, i would suggest you post either in the PS4 forums or on UDN

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also wasn't it recommended that you don't use the "plus" branch unless you've been explicitly instructed to do so?

daring river Jun 28, 2020, 10:25 AM

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since it's related to PS4, i would suggest you post either in the PS4 forums or on UDN
@hidden hedge I tried the PS4 forums but it's dead!

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But regardless this isn't a PS4 issue. I think it's a Visual Studio library or component that is missing but I can't figure it out!

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I needed the 4.25.1 support for SDK 7.5 and it was only available in plus branch

also wasn't it recommended that you don't use the "plus" branch unless you've been explicitly instructed to do so?
@hidden hedge

hidden hedge Jun 28, 2020, 6:59 PM

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For NDA'd platforms, you shouldn't really be asking that here

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If you're a custom licensee, then UDN is definitely the best place for it

dusty inlet Jun 28, 2020, 7:05 PM

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Hey, if anyone understand VulkanRHI can u tell me where the is the Presentation Queue where vkQueuePresentKHR is called.

hidden hedge Jun 28, 2020, 7:13 PM

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Isn't that just something that would come up if you searched in all files in VS?

dusty inlet Jun 28, 2020, 7:16 PM

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yes, but that would take time. and i actually dont have a clone in this PC i am using.

hidden hedge Jun 28, 2020, 7:19 PM

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Uh the binary version has the code in it

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And a VS search would take less time than having someone answer here when you'd get that answer from VS find in all files within 30 seconds

daring river Jun 28, 2020, 9:48 PM

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For NDA'd platforms, you shouldn't really be asking that here
@hidden hedge
I hear you but, again, this is NOT a playstation issue. It's ue4 source code and vs2019 issue!

spice delta Jun 28, 2020, 9:48 PM

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Does anyone have experience with making a separate tool that can load in UPackages like a .umap ?

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Im trying to create a custom physics geo exporter for my server implementation, but Im running into some issues

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I made a thread on the forum, but I thought Id ask here in case there was someone who has actively worked on something like this

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https://forums.unrealengine.com/development-discussion/engine-source-github/1781992-trying-to-load-in-a-umap-with-a-ubt-program

Unreal Engine Forums

Hello,

I should probably explain my use case a little bit:

Ive created a UBT Program based off of the "BlankProgram" project in the Programs folder, and finally managed to be able to resolve the path to my level file.

using UnrealBuildTool;
using System.Collections.Gene...

elder falcon Jun 28, 2020, 9:54 PM

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@daring river did you read the error message? it's quite clearly an error in PS4ToolChain.cs

teal plinth Jun 29, 2020, 12:29 AM

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when the source code builds again after updating visual studio do I need to change the solution configuration, because the Startup Project was a editor project with Debug GAme Editor selected, not the source code with Development Editor selected...

formal flower Jun 29, 2020, 5:47 AM

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Question about reducing a built custom fork's size.
Currently, the custom fork I'm building takes up 146GB. One of the users on the forums was curious if it's possible to reduce the size. Any hints on reducing it?

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Seems he/she wants to reduce it by around 30GB.

spiral mortar Jun 29, 2020, 6:05 AM

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@formal flower You can make a binary build

formal flower Jun 29, 2020, 6:08 AM

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@spiral mortar Ah, sorry. I've never done that before. Could you give me a current link that might explain how to do that?

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Would this info still work? https://forums.unrealengine.com/development-discussion/engine-source-github/105030-tool-create-your-own-binary-build-for-your-team

Unreal Engine Forums

I just made a small app that can help you build binary version of UE4 from source build.

https://i.imgur.com/z9u42gI.png

Users can now zip their rocket builds for

spiral mortar Jun 29, 2020, 6:09 AM

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Haven't looked at it recently, you'll have to dig up 🙂

formal flower Jun 29, 2020, 6:11 AM

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Got it. Really appreciate the lead, tho. Thx!

daring river Jun 29, 2020, 11:19 AM

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@daring river did you read the error message? it's quite clearly an error in PS4ToolChain.cs
@elder falcon
Do you have PS4 build? If not then you won't know what's going on!
I get these errors because of linking issues from somewhere like Win SDK or VS SDK or whatever. It's complaining about 'LinkEnvironment' NOT because PS4ToolChain has an error! Is it clearer now?

spiral mortar Jun 29, 2020, 5:07 PM

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Braking NDAs is a fun hobby

stable hemlock Jun 29, 2020, 7:41 PM

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After open my GameInstance. I just deleted a Structure which was there and now i cant open the blueprint. is there a rescue Way? Because there is a lot of important stuff in 😄

📎 unknown.png

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Version 4.25.0

small mauve Jun 29, 2020, 9:11 PM

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Anyone know where I can find the world composition's slate code? Well, this window:

📎 unknown.png

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Need to find a way to force the editor to load a level to automate some things

last swallow Jun 29, 2020, 10:01 PM

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I wanted to compile from source so I followed the instructions to connect my account to github but I don't appear to be able to access the github ue4 repo

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Is there anything else I need to do?

teal plinth Jun 29, 2020, 11:28 PM

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I'm building source from Rider For Unreal Engine, Im getting SwarmInterface.cpp(21): [C1083] Cannot open include file: 'metahost.h': No such file or directory, I remember I fixed this by fixing the empty include directories but idk if that's possible in rider

teal plinth Jun 29, 2020, 11:54 PM

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okay found the directories and it built

latent ferry Jun 30, 2020, 8:24 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

📎 unknown.png

forest hazel Jul 1, 2020, 10:23 PM

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Hello friends ! please help! when i try open my .sln file of my unreal project the vs 2017 splash screen start but the ide of vs not open and in the task manager i see vs run on the backrgoud process

upper shard Jul 2, 2020, 5:38 AM

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So why is it that when I change some of my normal non-engine code..now that I have the engine source, it keeps rebuilding the source? I expect it to just rebuild once if I never change the engine source...I keep getting full rebuilds triggering...why? It takes so long to build and almost every change will trigger this...

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I'm running vs 2019 and I did the generate.bat -2019

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Here's an example of the rebuild no idea why it's doing this because I didn't touch any file this is in:
Building UE4Editor and ShaderCompileWorker...
28>Using Visual Studio 2017 14.16.27038 toolchain (C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\VC\Tools\MSVC\14.16.27023) and Windows 10.0.18362.0 SDK (C:\Program Files (x86)\Windows Kits\10).
28>[Adaptive unity build] Excluded from Engine unity file: CharacterMovementComponent.cpp
28>Building 3466 actions with 44 processes...
28> [1/3466] Default.rc2

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And yes no idea why it's using my vs 2017 toolchain to rebuild in this case...

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This is the UE4Editor module that is rebuilding over and over..

sterile summit Jul 2, 2020, 5:40 AM

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does anyone have any idea why HighResShot freezes the game for 3 seconds?

upper shard Jul 2, 2020, 5:44 AM

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@sterile summit I don't think it's meant to be anything other than for the art production pipeline(not for playing the game), depends on your harddrive but it's going to be a large file and slow..and probably #cinematics can fill you in on more

sterile summit Jul 2, 2020, 5:45 AM

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Was trying to get beta testers to take some screenshots

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They all complain when taking screenshots 😂

upper shard Jul 2, 2020, 5:46 AM

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Should do regular resolution, why need high res? It's like 4x the size

#

you don't even play in that resolution

sterile summit Jul 2, 2020, 5:46 AM

#

Would it help if we run it on a different thread?

#

Or a screenshot that big will make it freeze regardless

upper shard Jul 2, 2020, 5:47 AM

#

maybe if it's threadsafe...I doubt it since it's taking a full render with all the main thread assets

random glade Jul 2, 2020, 5:05 PM

#

Greetings! I have a question that isn't about modifying the engine itself, but more about how it works, so maybe someone here can shed some light on the matter

#

I'm using Data Assets to store really large arrays (in the thousands) and no matter how much info I throw in there, they always seem to have the same size when I check them in the windows explorer (1.44 Kb)

#

Does anyone know how data storage works with Data Assets?

tawdry orbit Jul 3, 2020, 7:30 AM

#

Hello friends ! please help! when i try open my .sln file of my unreal project the vs 2017 splash screen start but the ide of vs not open and in the task manager i see vs run on the backrgoud process
@forest hazel perhaps it is taking a while to load

#

What are ur specs?

#

Sometimes when loading it will seem as not responding but if you wait it should appear

quick crystal Jul 3, 2020, 3:09 PM

#

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Microsoft\VC\v160\Microsoft.MakeFile.Targets(46,5): error MSB3073: The command "chcp 65001 >NUL && C:\Source\Repos\UnrealEngine\Engine\Build\BatchFiles\Build.bat

#

This error intermittantly happens

#

I fixed it originally by adding $(Path) to my C++ directories

#

and then it went away for days

#

now it randomly appeared again

quick crystal Jul 3, 2020, 3:28 PM

#

And yes $(Path) is still in my C++ directories I checked

undone oxide Jul 3, 2020, 7:33 PM

#

Hey unreal people! unreal sorry to asking twice in different channels, just in case anyone can help :)
Is there anything similar to TSubclassOf but for structs?

teal plinth Jul 4, 2020, 1:33 AM

#

Idk if it's a cpp or source question, In NavArea.h there is the method of the class NavArea::InitializeArea my IDE detects no implementation of this

#

anyone knows what could I look for?

thick storm Jul 4, 2020, 12:33 PM

#

@undone oxide UPROERTY(EditAnywhere) UScriptStruct*

plain mango Jul 4, 2020, 12:38 PM

#

Hey everyone! I am wondering if there is a way to open exported game projects as an unreal project?

#

Oh hey @undone oxide

undone oxide Jul 4, 2020, 12:44 PM

#

@thick storm UScriptStruct is not a blueprint type, so it won't be available AFAIK

thick storm Jul 4, 2020, 12:45 PM

#

try first

undone oxide Jul 4, 2020, 12:46 PM

#

@thick storm oh my god, it seems it's working! Thanks a lot!

lusty coral Jul 4, 2020, 7:39 PM

#

@forest hazel try to reinstall or repair visual studio, also right on uproject file click on generate visual studio project files

dense helm Jul 4, 2020, 11:14 PM

#

hello i got a question about character movement and want to know if this situation is managed bye the character movement or other thing

#

in red is the collision point

📎 draw.png

#

in green is capsule

#

component

upper shard Jul 5, 2020, 12:33 AM

#

@dense helm the character movement can do it, or if you set it to nav walk, you can have physics do it and give you events, in general physics is still used by the character movement, but the character movement will do the simulation step I think if you're using "pyswalking" mode(regular walk). At least that's how I remember the last time I went through the code.

#

you can extend character movement and override virtual void UCharacterMovementComponent::HandleImpact, there are lots of ways to do it though

dense helm Jul 5, 2020, 9:47 AM

#

@upper shard thx for the answer so it s not in a specific function for now?

pseudo tusk Jul 5, 2020, 10:58 AM

#

Hello guys, trying to startup a compiled version of ue4 and I get this error and startup crashes. Anyone have an idea how to fix it?

📎 error.JPG

coral current Jul 5, 2020, 11:25 AM

#

Is it possible to ensure that compiling for a source build and compiling for an installed build results in a compatible build ID?

#

📎 unknown.png

#

I created an installed build from an engine source build, but even though they are using the same code base, if I compile the project against them I will get incompatible BuildId

#

📎 unknown.png

ionic plover Jul 5, 2020, 3:59 PM

#

I just pulled the latest Oculus UE4 release of 4.25 and MemoryProfiler2 refuses to build. I've had similar issues w/ .resx in the past on Win10 where I need to use Powershell to Unblock the files. But this time VS claims that Resources.resx is missing (and it's not.) Any idea what to do about this?

📎 unknown.png

charred cargo Jul 5, 2020, 4:28 PM

#

Hi everyone, I have a question about building from source, I need to compile a patched version for a subsystem but I've already made a lot of my game in the stock download UE4. So what will happen to all my work and my other projects from the stock version?

stable hemlock Jul 5, 2020, 5:00 PM

#

Building process for 425 version same as for 424? Wanna trying Rider..

stable hemlock Jul 5, 2020, 6:07 PM

#

Building from sources possibility only with VS? Can I do this via Rider instead MS VS?

forest hazel Jul 6, 2020, 5:09 AM

#

@tawdry orbit @lusty coral : i fix it by reunstall vs and now is ok 🙂 thank you freinds!

stable hemlock Jul 6, 2020, 12:54 PM

#

not sure if anyone posted it here before.

#

https://github.com/EpicGames/UnrealEngine/tree/5a02ea65dec9814537443007dce33bea2d7d6ba2/Engine/Plugins/Runtime/NetworkPrediction

#

network prediction update

#

This checkin is a large refactor of the NetworkPrediction system. We hope this is the last big set of changes, though
there is still work to do. User code requires some fixups but should be a straight forward port overall. All existing
examples have been updated. See "Upgrade Notes" below.

thick storm Jul 6, 2020, 7:20 PM

#

don't bother now

#

;d

#

the version is completly broken

#

you can't really use it on sim proxies

elder falcon Jul 7, 2020, 1:58 AM

#

there's not much of a point in "bothering" with it until they release a stable version that includes the rewritten movement component, but it's very nice to follow the progress

thick storm Jul 7, 2020, 5:52 AM

#

speak for yourself I'm using it ; p

sterile summit Jul 7, 2020, 6:06 AM

#

anyone successfully nativized their game?

#

there is a known bug with collision that epic marked as fixed but its still broken

low dust Jul 7, 2020, 6:13 AM

#

you should probably mention the version you need that to work at

#

I have successfully nativized one game but it was like in 4.19 :p

sterile summit Jul 7, 2020, 6:19 AM

#

4.24 and 4.25

#

did you run into collision issues in 4.19? @low dust

#

its been a bug since 4.15

#

https://issues.unrealengine.com/issue/UE-44333

#

says fixed but its not lol

low dust Jul 7, 2020, 6:21 AM

#

I didn't have any issues with collisions

sterile summit Jul 7, 2020, 6:22 AM

#

thats strange. Literally everyone i have talked to have run into this issue.

#

There is a work around for it

#

but its a bit hacky

low dust Jul 7, 2020, 6:23 AM

#

weird, I don't really have much collision cases though so it's possible that I could have just missed it

sterile summit Jul 7, 2020, 6:23 AM

#

yea true

#

my game is physics based

#

so collisions are easily noticable

low dust Jul 7, 2020, 6:24 AM

#

I mainly used physics collisions as fail safes really on a track that's in the air, main interaction from road to vehicle was through linetraces so pure queries

#

there were few places on track where the vehicle should have bumped to the collision if driven at high speeds and it could clip the collider without this but it's totally possible it just never happened then...

#

so the issue only happens with custom collision profile?

timber shoal Jul 7, 2020, 7:19 PM

#

Does anyone here know what kind of spline is used in the spline mesh component?

thorny hemlock Jul 7, 2020, 9:42 PM

#

Does anyone know how to fix the "Microsoft.MakeFile.Targets(46,5): error MSB3075: The command "chcp 65001 >NUL" error

#

?

grand sand Jul 7, 2020, 11:00 PM

#

Hi devs

#

I was working on getting the Chaos System to work with 4.23.4

#

I got everything correctly compiled. And when I run the chaosdestruction demo project. It crashes on the runtime error with this log. https://pastebin.com/bh6GQPHh

Pastebin

ChaosDemoBuildLog - Pastebin.com

#

Has anybody tried building chaos here ?

shrewd thorn Jul 8, 2020, 6:20 PM

#

There's no way the 4.23 version of chaos will work. The 4.25 one barely works

queen aurora Jul 8, 2020, 7:42 PM

#

Input related question.

Background: Some android devices support up to a 240hz touch sampling rate. I'd like to understand if UE4 receives input events from the android OS at 240hz.

In reviewing the engine code, it looks like the engine code is set up in such a way that it can receive an arbitrary number of input events per frame from the OS - so that's great.

My question is - does unreal by default receive touch input events at 240hz from android phones that are capable of 240hz touch input. If not, what in the architecture limits the number of touch input events?

dense helm Jul 8, 2020, 10:16 PM

#

hello,
Anyone know where the nav mesh is generate i m talking about tiles.
i want to see how they check landscape collision and normal of face to know if yes or no is a walkable surface etc

stable hemlock Jul 9, 2020, 11:59 AM

#

can't remember which version was that, but the initial version that chaos was introduced did work OKish

#

it compiled without any fuss and tools worked alright for the most part

#

subsequent engine versions had big issues though, especially the one that changed the UI

tardy pollen Jul 9, 2020, 2:56 PM

#

is there a way to re enable openGL ES 2.0 ?

elder falcon Jul 10, 2020, 10:57 AM

#

that's the expected behavior of Setup.bat

blissful bramble Jul 10, 2020, 9:02 PM

#

Does anyone know how to fix the "Microsoft.MakeFile.Targets(46,5): error MSB3075: The command "chcp 65001 >NUL" error
I'm having the same problem, does anyone know how to fix this?

random glade Jul 10, 2020, 11:47 PM

#

Greetings!
Quick question: Can you create objects/instances of classes that don't start with U (and therefore aren't derived from UObject)?
I'm trying it with BitCrusher.h but it says "StaticClass is not a member of Audio::FBitCrusher" but I'm not sure if it's because my code is wrong or it just can't be done

#

I'm using Audio::FBitCrusher* BitCrusherFX = NewObject<Audio::FBitCrusher>();

blissful bramble Jul 11, 2020, 12:09 AM

#

Btw, does anyone know how to fix the "compiler is out of heap space" error?

obtuse bronze Jul 11, 2020, 12:41 PM

#

~

reef flower Jul 11, 2020, 2:48 PM

#

Hello, I am trying to build UE4.25 with steam SDK v149, by this "https://docs.unrealengine.com/en-US/Programming/Online/Steam/index.html" I should look for OnlineSubsystemSteamPrivatePCH.h, but there is no such file. Any help please? I can't point into the sdk root folder

blissful bramble Jul 11, 2020, 3:35 PM

#

I found a solution for the chcp error https://www.youtube.com/watch?v=KXIv4y51fyw&feature=youtu.be
@thorny hemlock you might need it too

YouTube

Ferox

Engine build error Fix

The file pass: YOURENGINEPASS\Engine\Source\Programs\UnrealBuildTool\Platform\Windows
and the file name "VCToolChain.cs".
You should add after 456 lines that code:
Arguments.Add("/wd4800"); // 4800: Implicit conversion from 'type' to bool. Possible information

▶ Play video

opaque lotus Jul 11, 2020, 6:02 PM

#

hi all, just checking that this isn't a by design, but if you select a material instance for the material on an element in a material billboard, then upon that level being loaded, you crash with the following callstack https://cdn.discordapp.com/attachments/221799368884355072/731567061582741585/unknown.png

#

Oh, that's in 4.25.1

scarlet saddle Jul 11, 2020, 6:08 PM

#

I don't know where to ask this

#

📎 unknown.png

#

I have this problem: https://forums.unrealengine.com/development-discussion/content-creation/1490500-missing-transform-widget-arrows-in-my-project

Unreal Engine Forums

All the sudden I've lost my transform widget arrows for moving objects around in the viewports

Its both in the view seen here
https://forums.unrealengine.com/

#

any insight?

#

yes I have the visibility turned on in settings
unless there's another setting for it beyond that

elder falcon Jul 11, 2020, 8:58 PM

#

yeah you'll need to fix some things

#

?

#

I mean for win 7

#

no clue about the editor

#

I only care for the shipping build to run on it

#

all the attempts to use unavailable library functions need to be guarded

#

luckily the one that was making the ship build die on start already had an example for how to make it work elsewhere in the engine

#

development on windows 7 in 2020 is a joke anyway so

#

shipping is an actual problem because quite a few players are stuck on ancient pcs

blissful bramble Jul 11, 2020, 10:56 PM

#

I want to make a custom shading model but I've never worked with unreal engine's source code. Does anyone know any good tutorials and documents I should read before I begin making it?

spiral mortar Jul 11, 2020, 11:08 PM

#

Starting to be old: https://medium.com/@lordned/unreal-engine-4-rendering-overview-part-1-c47f2da65346

Medium

Unreal Engine 4 Rendering Part 1: Introduction

Learning to write custom shaders!

blissful bramble Jul 11, 2020, 11:40 PM

#

ty

stable hemlock Jul 12, 2020, 7:16 AM

#

windows 7 64bit has 5.91% share according to steam stats

#

87.12% is at win10 64bit

#

while 6% of tens of millions is still a lot, I'd say at this point most of them will have quite old hardware anyway

#

and running ue4 on their system might be a problem in and of itself

#

win10 adoption seems be rising pretty fast too

#

its up 1.54% from the last hardware survey

#

if you are not releasing in 6 months to a year, win7 might become even more irrelevant by the time you release

stable hemlock Jul 12, 2020, 11:48 AM

#

its up to you to decide which audience you want to cater to 🤷

gray glade Jul 12, 2020, 10:47 PM

#

Blegh. I've got a client project in a source build of the engine and I need to get new versions of their plugins.

#

But

#

That involves the marketplace and it won't let me manually download a version of the plugins.

#

Anyone figured out how to a) add an engine source build to the launcher and/or b) directly download a marketplace asset for a specified engine version?

boreal tartan Jul 12, 2020, 11:00 PM

#

hi! so I've successfully modified the Unreal Engine from the source code from GitHub but I don't seem to find a way to attach the built exe file inside the Epic Games Launcher so that I can have the plugins and all of that ready to use. Any way to work around this? I've got a few assets that are only on the market but I can't find a way to import them in my custom UE4 build

gray glade Jul 12, 2020, 11:08 PM

#

(I just asked the same thing)

boreal tartan Jul 12, 2020, 11:10 PM

#

sorry, sorry. my bad, I didn't read that as I was in a rush because for about 3 days I'm still searching for this

gray glade Jul 12, 2020, 11:14 PM

#

At this point I'm wastefully installing the same engine version as I'm targeting just to get the marketplace to let me install the plugin.

#

Waste of space and time.

elder falcon Jul 13, 2020, 12:18 AM

#

that is the only way

boreal tartan Jul 13, 2020, 12:23 AM

#

what is the only way?

elder falcon Jul 13, 2020, 12:28 AM

#

install the same engine version with the launcher, add plugin, manually copy it

boreal tartan Jul 13, 2020, 12:29 AM

#

I tried this but it says that the build is different and it can't run UE4 with those plugins

gloomy hamlet Jul 13, 2020, 7:58 AM

#

@boreal tartan After copying the plugin into your source engine, you'll need to build again

stuck meadow Jul 13, 2020, 10:38 AM

#

Is this normal when building from a source build? I havent changed anything but it seems like it has some default errors

📎 unknown.png

#

📎 unknown.png

boreal tartan Jul 13, 2020, 12:39 PM

#

@boreal tartan After copying the plugin into your source engine, you'll need to build again
@gloomy hamlet thanks for the help, but it doesn't work.. when I copy the files, the build is done in less than a second - meaning it didn't do anything. when I open the modified UE4, I'm faced with the following error. The problem is that these plugins don't seem to have any .sln or .proj files in any of their folders so I can rebuild them or to add them as project in the UE4 .sln file; they only have .h and .cpp files

#

📎 Screenshot_4.png

#

this error appears when I run the engine with the plugins activated

stuck meadow Jul 13, 2020, 12:56 PM

#

anyone knows how to fix the ispc errors?

#

📎 unknown.png

gloomy hamlet Jul 13, 2020, 1:23 PM

#

@boreal tartan Don't know what build setup you're using, usually all plugins should get built by default as part of the engine target, they don't need their own project files.

boreal tartan Jul 13, 2020, 2:12 PM

#

I'm using the 4.25.1 from GitHub and those plugins seem to be working on the 4.25.1 from the Epic Games Launcher, but not on the GH one. Even the old projects made with the Launcher version don't seem to be working on the GH one.

boreal tartan Jul 13, 2020, 2:43 PM

#

I think I just made it work, but I have 0 f'ing clues how

#

First thing to do was to manually import the plugin's folders and files inside VS

#

And then I just built and ran it

#

@gray glade maybe you can find this information useful

gray glade Jul 13, 2020, 4:38 PM

#

Eh, not really.

#

I mean, I did what I said. Install the same engine version, via the launcher, and install the plugin there, then copy it over.

#

That's as simple as it is.

#

manually import the plugin's folders and files inside VS
Sounds wrong, @boreal tartan

#

You don't do anything to the solution or project within VS, because they are generated, and your edits to them will be undone when generating project files and building.

boreal tartan Jul 13, 2020, 4:57 PM

#

I mean, I did what I said. Install the same engine version, via the launcher, and install the plugin there, then copy it over.
@gray glade for me this solution didn't work as much as I wanted to and the image above was the error I kept receiving when opening up the newly built UE4 (including the copied plugins)

gray glade Jul 13, 2020, 4:58 PM

#

Well, did you follow the instructions and build?

#

After generating project files?

boreal tartan Jul 13, 2020, 5:00 PM

#

Yes, I did. I've also installed the ReSharper plugin for VS2019 which in my opinion it did a good work

gray glade Jul 13, 2020, 5:01 PM

#

ReSharper shouldn't have any impact on building UE4 plugins.

boreal tartan Jul 13, 2020, 5:02 PM

#

One thing that I don't like after build are the extra 50-60 gbs that I won't use - like mobile support, TVOS, VR, etc

gray glade Jul 13, 2020, 5:02 PM

#

Those are crucial to the engine. Removing them is somewhat possible, but involved.

boreal tartan Jul 13, 2020, 5:03 PM

#

ReSharper shouldn't have any impact on building UE4 plugins.
@gray glade yea, I know, but it seems to me that VS is very unpredictable in some instances 😄

gray glade Jul 13, 2020, 5:04 PM

#

UE4 is still an industry grade product, the ease of access to it's source code is somewhat misleading in that respect. It's target demographic involves studios with IT departments and considerable technical expertise.

#

50 - 60 GBs for platform support should be nothing (to the target demographic).

#

(Disclosure: I left Epic February of this year)

#

But I speak from my own perspective, not on their behalf.

boreal tartan Jul 13, 2020, 5:05 PM

#

I see. That's very cool

#

If I'm not very intrusive with the following question, what was your position at Epic?

gray glade Jul 13, 2020, 5:10 PM

#

I worked as an external contractor, then as an individual contractor, and finally an employee over the course of about 7 years, on the engine team and on the Fortnite UI team.

boreal tartan Jul 13, 2020, 5:14 PM

#

Really amazing, man!

#

So I came across this tool, but it seems that it wasn't updated for 4.25 - https://github.com/ryanjon2040/UE4-Binary-Builder - and I can't find a workaround to do that

GitHub

ryanjon2040/UE4-Binary-Builder

An application designed to create installed Unreal Engine builds (aka Rocket builds) from Unreal Engine GitHub source. - ryanjon2040/UE4-Binary-Builder

obtuse quarry Jul 13, 2020, 5:54 PM

#

How do you distribute a source build of the engine properly? I read some post in forum/answerhub and also Epic Docs, but ... I would go with it like the project itself. Download the source, add everything of the download to perforce.
Every programmer now would need to run the setup.bat to get everything else that is necessary. Problem 1: How to prevent that devs accidentaly/unknowingly checkin stuff that is downloaded with the setup.bat? I think stuff is downloaded into multiple locations, thus just adding a simple ignore would not suffice.
Problem 2: Ensuring that artists always get the correct binaries. The problem already exists for the project itself, as plugin binaries are placed different to the engine binaries. Thus just making a "Resolve Offline Work" in perforce on the binaries folder, does not include the plugin binaries. And now making an engine change introduces more folders where you would need to look for updated binaries. And "Resolve Offline Work" would also cause Problem 1, as it would say that there are files that are not part of perforce yet

formal flower Jul 14, 2020, 5:08 AM

#

@obtuse quarry Pretty sure you don't have to worry about #1. the default gitignore ignores all setup.bat dependencies

stuck meadow Jul 14, 2020, 8:39 AM

#

Anyone knows how to fix errors from not being able to compile ispc files? Says its not a class.

obtuse quarry Jul 14, 2020, 9:15 AM

#

@formal flower GitIgnore, but we use perforce. Good point though, will see for reconfigure to perforce

#

Thanks

boreal tartan Jul 14, 2020, 10:17 AM

#

@stuck meadow are you trying to build a project from source?

stuck meadow Jul 14, 2020, 12:20 PM

#

Yeah and I keep getting that ispc error @boreal tartan

obtuse quarry Jul 14, 2020, 3:18 PM

#

@formal flower nope... ~33000 files that were downloaded with setup.bat are not covered by the ignore

#

though it ignores the content directory. Thus the .gitignore is realy just to publish the engine in github.

#

https://allarsblog.com/2017/04/05/populating-perforce-with-an-unreal-engine-source-build/ recommends a custom p4ignore to get rid of most of the stuff

Allar's Blog

Populating Perforce With An Unreal Engine Source Build

This document covers how to set up a new Perforce server and populate it with an Unreal Engine source build alongside your projects. This is the most basic setup for 'beginner' Perforce pipelines and does not cover things like streams. Please note that you should only do thi...

bright olive Jul 15, 2020, 12:47 AM

#

has anyone added gamepad support to the pixel streaming plugin yet (https://developer.mozilla.org/en-US/docs/Web/API/Gamepad_API/Using_the_Gamepad_API )?

MDN Web Docs

Using the Gamepad API

HTML5 introduced many of the necessary components for rich, interactive game development. Technologies like canvas, WebGL, audio, and video, along with JavaScript implementations, have matured to the point where they can now support many tasks previously requiring native code....

#

just wondering if there is a branch out there somewhere

low glacier Jul 15, 2020, 4:35 PM

#

@boreal tartan May I know what issue you are facing related to 4.25? It should build without issues. You can select 4.24 in the Engine Selection tab and it should work for 4.25 also.

boreal tartan Jul 15, 2020, 7:20 PM

#

@boreal tartan May I know what issue you are facing related to 4.25? It should build without issues. You can select 4.24 in the Engine Selection tab and it should work for 4.25 also.
@low glacier this is the error I'm receiving

📎 unknown.png

low glacier Jul 15, 2020, 7:39 PM

#

@boreal tartan You have the InstalledEngineBuild.xml file in that location?

#

You can also manually select the InstalledEngineBuild.xml file by clicking the button next to it.

#

And try running the binary builder as administrator since you have the engine installed on C drive.

boreal tartan Jul 15, 2020, 7:42 PM

#

Ok, I just tried you recommendations but unfortunately with no success 😦

low glacier Jul 15, 2020, 7:44 PM

#

You have the xml file in that location?

boreal tartan Jul 15, 2020, 7:46 PM

#

📎 unknown.png

#

yup

low glacier Jul 15, 2020, 8:04 PM

#

I don't see InstalledEngineBuild.xml in that screenshot and the location is wrong

boreal tartan Jul 15, 2020, 8:06 PM

#

oooohhh sorry

#

I didn't see that mistake

#

guess I was trying with the wrong XML file

#

here's the original location for the requested XML, but I don't see anything here

#

📎 unknown.png

low glacier Jul 15, 2020, 8:08 PM

#

Wait. Are you trying to run this on an Engine build from the launcher?

boreal tartan Jul 15, 2020, 8:09 PM

#

guess I was just screwing myself up

#

thanks for the heads up

#

really appreciated!

#

I simply didn't notice what I was doing wrong

#

and I think I should take a bigger brake to free my mind a little

low glacier Jul 15, 2020, 8:10 PM

#

No worries 🙂

boreal tartan Jul 15, 2020, 8:12 PM

#

📎 unknown.png

#

I don't seem to find another exe

#

and when selecting the 'build' one it gives me the following error

#

📎 unknown.png

#

oh, and the selected engine version is 4.24 - not 4.22 as seen in the photo. I just tested to see what's disabling between the version numbers

#

📎 unknown.png

obtuse quarry Jul 15, 2020, 8:58 PM

#

After syncing the custom engine and the project via perforce to the artist, the engine is not registered to the system and thus the project can't find the engine. Does every artist/coworker need to run setup.bat of the custom engine?

limber jacinth Jul 16, 2020, 12:36 AM

#

unless you checked those files in yes

#

i would suggest making a binary version of the engine

#

for artists etc

#

they don't need the source build

rain lake Jul 16, 2020, 6:49 AM

#

is the 4.26 water tool in master?

obtuse quarry Jul 16, 2020, 12:10 PM

#

@limber jacinth the problem is that the project does not find the engine, as the custom engine is only stored as an ID in the uproject file. Thus something needs to be registered somewhere (I think windows registry?) but that does not happen from a simple perforce sync. So how should the project find the custom engine without running the setup.bat?

limber jacinth Jul 16, 2020, 12:17 PM

#

run Version Selector

#

from the bin/win64 director

#

@obtuse quarry

#

directory*

obtuse quarry Jul 16, 2020, 12:18 PM

#

... thanks. Why is that not documented?...

#

or is it and I'm just blind

#

and can you tell me where the ID that is placed in the uproject file is stored in the engine? as that obviously needs to be send to the artists as well so everyone is using the same ID to not change the uproject file on every user.

obtuse quarry Jul 16, 2020, 1:59 PM

#

@stable hemlock Thanks. So you realy need edit the registry on every team members machine ...? Seriously?

#

So a remote artist is supposed to know that he has to edit the registry?

#

"Although we provide Installed Engine Builds as a courtesy through the Epic Games Launcher, ..." ...

obtuse quarry Jul 16, 2020, 2:45 PM

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yeah thanks. Already on it to write a batch

low glacier Jul 16, 2020, 3:17 PM

#

@boreal tartan You need to select AutomationToolLauncher.exe not UnrealBuildTool.exe. Follow these steps (assuming you have completely downloaded/cloned UE4 git repo).

1: Run Setup.bat
2: After Setup.bat finishes run GenerateProjectFiles.bat
3: Then open UE4.sln
4: In solution explorer expand Programs folder, right click on AutomationToolLauncher and select Build.
5: You should now have AutomationToolLauncher.exe in Engine/Binaries/DotNET folder.

stuck meadow Jul 17, 2020, 9:29 AM

#

is there a problem if one user opens the project with a source build while others use the epic launcher version?

lilac shale Jul 17, 2020, 10:22 AM

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Does anyone know how we can contact the devs or look up and if needed report issues in Development branches? Couldn't really find any info.

stuck meadow Jul 17, 2020, 12:07 PM

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well 4.25 just for server builds @stable hemlock

lilac shale Jul 17, 2020, 12:24 PM

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@stable hemlock Yeah.. I know that form, but there is no option to select another version then the binary builds. "send your bug reports to /dev/null" there is no option like that?

shrewd thorn Jul 17, 2020, 10:17 PM

#

I've had much more success sending in pull requests that halfway fix a bug then using that bug form. I only used the bug form for platform-specific stuff that can't be a pull request due to licensing

#

It goes through a weird layer of QA before those bug report bugs even get to a developer

#

It seems like very few make it through

frozen plume Jul 17, 2020, 11:10 PM

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Hello, I'm trying to save a procedural wave out as a soundwave; I tried everything but for whatever reason when I play the audio in the game it doesn't work.. any ideas would help thanks 🙂

    USoundWaveProcedural* NewAsset = NewObject<USoundWaveProcedural>(AssetPackage, USoundWaveProcedural::StaticClass(), *filename, EObjectFlags::RF_Public | EObjectFlags::RF_Standalone, SoundToSave);
    FAssetRegistryModule::AssetCreated(AssetPackage);
    AssetPackage->MarkPackageDirty();
    bool bSuccess = UPackage::SavePackage(AssetPackage, SoundToSave, EObjectFlags::RF_Public | EObjectFlags::RF_Standalone, *filename);```

clear cloak Jul 18, 2020, 7:06 AM

#

For getting into customizing the engine source, I wanted to do a few things with customizing the blueprint graph i.e changing the execution flow wire color or blueprint node colors since I figure that might be a fun jumping off point. Does anyone have any recommendations on how I find where things like that are located in the code so I can change them?

stable hemlock Jul 18, 2020, 11:26 AM

#

Our main goal is to make sure Chaos is fully featured and production ready 4.26.

Is it though? 😅

elder falcon Jul 18, 2020, 11:49 AM

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@clear cloak use the widget reflector on a blueprint node

random glade Jul 18, 2020, 2:59 PM

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Greetings! I'm trying to find the C++ function called when right clicking an asset and hitting AssetActions/Reload, but most reload funcionts I find on the source code seem to be for hot reload of code. Any pointers?

gloomy hamlet Jul 18, 2020, 3:15 PM

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@random glade Just do a text search in code for the tooltip text. Easy way to find code behind just about any UI element.

random glade Jul 18, 2020, 3:58 PM

#

Why didn't I think of that? 😅

#

Thanks a bunch

clear cloak Jul 18, 2020, 6:46 PM

#

I'll take a look at that thanks @elder falcon! One more thing is after building from source and starting up the editor, it's been stuck at 39% loading for the past 12 hours on a pretty good spec system which I assume is normal and it's just compiling shaders & whatever other setup it needs to do

elder falcon Jul 18, 2020, 7:17 PM

#

that's not normal at all

#

first startup takes maybe 5 minutes for me on a fresh workspace

clear cloak Jul 18, 2020, 7:20 PM

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Huh ok, thanks for letting me know I'll take a look at the logs and see if there's anything funky

#

Found it, going to add the solution here so if people ctrl + f they can find it:

Problem: Source build of editor stuck at 39% 39 39 percent

Solution: Disable XGE https://forums.unrealengine.com/community/general-discussion/1743009-work-from-home-disable-xge-incredibuild

boreal tartan Jul 18, 2020, 7:35 PM

#

@boreal tartan You need to select AutomationToolLauncher.exe not UnrealBuildTool.exe. Follow these steps (assuming you have completely downloaded/cloned UE4 git repo).

1: Run Setup.bat
2: After Setup.bat finishes run GenerateProjectFiles.bat
3: Then open UE4.sln
4: In solution explorer expand Programs folder, right click on AutomationToolLauncher and select Build.
5: You should now have AutomationToolLauncher.exe in Engine/Binaries/DotNET folder.
@low glacier Hi! Thanks for the help so far. Really appreciated! I've done what you just said, but I'm encountering other errors. Please see below the first one

📎 unknown.png

#

If I'm trying to change the name to 'AutomationTool.exe' it gives me the following error

📎 unknown.png

low glacier Jul 18, 2020, 7:37 PM

#

@boreal tartan Open UE4.sln and under programs, right click on AutomationTool and select Build.

#

Make sure you build AutomationToolLauncher as well

#

Then in the Binary Builder, select AutomationToolLauncher.exe and not AutomationTool.exe

boreal tartan Jul 18, 2020, 7:40 PM

#

Thank you, but right now I'm getting the following one...

📎 unknown.png

low glacier Jul 18, 2020, 9:19 PM

#

@boreal tartan Try turning on Host Only option.

boreal tartan Jul 18, 2020, 9:29 PM

#

WOW! Amazing! This one just did the trick

#

I don't know how and why, but previously I've tried with that option on ON but I was receiving the exact same error when Win64 was selected

#

Anyway, thank you very much Ryan!

#

You were really helpful and I really appreciate that!

trail bloom Jul 18, 2020, 10:28 PM

#

Anyone have experience tuning Task graph for performance kicking around to answer a question about threads? https://answers.unrealengine.com/questions/971903/how-to-specify-number-of-task-graph-threads-numnam.html

spiral mortar Jul 19, 2020, 3:05 AM

#

@trail bloom

📎 unknown.png

#

I would just change these

blissful bramble Jul 19, 2020, 5:24 PM

#

Whenever I build Unreal Engine with visual studio my computer begins to overheat and struggles to keep up, and it often causes errors and makes Visual Studio to crash. I always make sure that nothing runs in the background too. My computer should have enough specs to handle this. Does anyone know how I can improve the performance?

elder falcon Jul 19, 2020, 5:28 PM

#

fix the overheating?

#

clean dust from coolers and filters or upgrade cooler

stable hemlock Jul 19, 2020, 8:47 PM

#

you should define what overheat means

#

some processors can handle heat better than others

#

sometimes overheating of the cpu might not be an issue, but overheating ram might cause all sorts of problems

#

in any case, your pc should not overheat when compiling

#

you should definitely fix it if that is actually the case

blissful bramble Jul 19, 2020, 9:17 PM

#

Thanks for the suggestion! I'll try to clean my PC and get a better cooling system. I don't know if this is related, but in addition to overheating my computer also becomes very slow to the point where VS sometimes crashes. Is there anything I can do to fix that?

limber jacinth Jul 19, 2020, 10:21 PM

#

you are using your entire CPU compiling

#

you haven't told us your specs, but building the engine really taxes a cpu

#

also requires a decent amount of memory >=16gb

tawdry orbit Jul 20, 2020, 2:17 AM

#

Whenever I build Unreal Engine with visual studio my computer begins to overheat and struggles to keep up, and it often causes errors and makes Visual Studio to crash. I always make sure that nothing runs in the background too. My computer should have enough specs to handle this. Does anyone know how I can improve the performance?
@blissful bramble You need at least 8 gb of ram; turn off turbo boost if you have it to avoid overheating; and you need at least 6 cores in your pc to perform decently.

But tell us your specs

blissful bramble Jul 20, 2020, 5:30 AM

#

📎 unknown.png

tawdry orbit Jul 20, 2020, 5:33 AM

#

okay, on your pc go to
Power & Sleep Settings > Additional Power Settings > High performance > Change Plan Settings > Change Advanced Power Settings

[Select High performance if not]

blissful bramble Jul 20, 2020, 5:35 AM

#

It is already selected

tawdry orbit Jul 20, 2020, 5:35 AM

#

Hard disk > Turn off ... > 0
Processor power management >

min to 5%
active cooling
max 99%

#

I did that on my pc and it dropped down like 18° Celsius:

i have an intel i7

#

make sure to apply and save,

blissful bramble Jul 20, 2020, 5:37 AM

#

I changed it, thanks! I'll try building unreal soon and tell you if it made any difference.

tawdry orbit Jul 20, 2020, 5:38 AM

#

you are welcome, also, how much cores do you have?

blissful bramble Jul 20, 2020, 5:38 AM

#

10

tawdry orbit Jul 20, 2020, 5:38 AM

#

have you set up your buildconfig file?

#

thats important

blissful bramble Jul 20, 2020, 5:38 AM

#

nope XD

tawdry orbit Jul 20, 2020, 5:39 AM

#

all right, so before recommending you the settings, how many physical cores vs logical cores do you have?

spiral mortar Jul 20, 2020, 5:40 AM

#

Is that a prebuilt PC?

#

Or did you build it yourself

blissful bramble Jul 20, 2020, 5:40 AM

#

Built it by myself (I chose the parts and had someone build it).

spiral mortar Jul 20, 2020, 5:41 AM

#

This conversation is better suited for #lounge btw, since this is clearly not an unreal-specific issue 🙂

tawdry orbit Jul 20, 2020, 5:41 AM

#

<?xml version="1.0" encoding="utf-8"?>
<Configuration xmlns="https://www.unrealengine.com/BuildConfiguration" >
<BuildConfiguration>
<MinFilesUsingPrecompiledHeader>1</MinFilesUsingPrecompiledHeader>
<bUseUnityBuild>true</bUseUnityBuild>
<bAllowXGE>false</bAllowXGE>
</BuildConfiguration>
<BuildMode>
<bIgnoreJunk>true</bIgnoreJunk>
</BuildMode>
<LocalExecutor>
<ProcessorCountMultiplier>2</ProcessorCountMultiplier>
<MaxProcessorCount>20</MaxProcessorCount>
</LocalExecutor>
</Configuration>

You need three copies of this file, save it as xml

spiral mortar Jul 20, 2020, 5:42 AM

#

^ not really needed, default config does what's needed

blissful bramble Jul 20, 2020, 5:42 AM

#

Ok, I'll start messaging in #lounge

tawdry orbit Jul 20, 2020, 5:42 AM

#

"https://www.unrealengine.com/BuildConfiguration" (mistaken)

#

^ not really needed, default config does what's needed
@spiral mortar he has 10 cores, 32 gb if ram and its lagging when compiling

#

not normal

spiral mortar Jul 20, 2020, 5:43 AM

#

Yes, most likely because his cooling system is not good enough

#

Changing unreal build config files won't help with that

unique blade Jul 20, 2020, 1:39 PM

#

does anybody ever tried to fix lightshaftrendering.cpp so it doesn't jitter with TAA enabled ? There's a dedicated func to handle TAA, but it doesn't yields expected result. I'm wondering either if it's borked or a special snowflakes that need very custom fix (from 4.20 to 4.25).

lucid whale Jul 22, 2020, 1:45 AM

#

Probably anyone can explain why according https://docs.unrealengine.com/en-US/API/Runtime/Engine/FSceneInterface/UpdateSceneCaptureContents/1/index.html
"This must be called on the game thread." Is it possible to write data to Render Target not in Game Thread without engine modification?

FSceneInterface::UpdateSceneCaptureContents

Updates the contents of the given scene capture by rendering the scene.

heavy crater Jul 22, 2020, 9:03 AM

#

In Source build UE how to install plugin form marketplace?

unique patrol Jul 22, 2020, 8:40 PM

#

help! I get really frustrated when I get this. How would I go about fixing this, and what is causing it, how do I avoid it ??

📎 unknown.png

heavy crater Jul 23, 2020, 3:12 AM

#

@unique patrol do you have visual studio install in sys?

#

and do you use any c++ files in your project, if yes then try to generate visual studio project by right click on .uproject file

#

I 'have only seen this when i made c++ project!

unique patrol Jul 23, 2020, 3:45 AM

#

If only it were that easy. 😂

#

I spent half a day trying to fix it... the other half just redoing the entire project.

#

1>D:\_PROJECTS\GameDev\WednesdayNightRising\002_Game\Intermediate\Build\Win64\UE4Editor\Inc\WednesdayNightRising\WednesdayNightRisingGameModeBase.generated.h(16): error C2007: #define syntax

#

1>D:\_PROJECTS\GameDev\WednesdayNightRising\002_Game\Source\WednesdayNightRising\WednesdayNightRisingGameModeBase.h(13): error C2059: syntax error: 'public'
1>D:\_PROJECTS\GameDev\WednesdayNightRising\002_Game\Source\WednesdayNightRising\WednesdayNightRisingGameModeBase.h(14): error C2143: syntax error: missing ';' before '{'
1>D:\_PROJECTS\GameDev\WednesdayNightRising\002_Game\Source\WednesdayNightRising\WednesdayNightRisingGameModeBase.h(14): error C2447: '{': missing function header (old-style formal list?)```

#

📎 image0.jpg

#

I checked it all... and I couldn't figure out how to fix it.

prime torrent Jul 23, 2020, 4:05 AM

#

@unique patrol Post code in something like Pastebin for us to see.

#

It'll be much easier.

unique patrol Jul 23, 2020, 4:06 AM

#

I trashed the project and started again

#

Sorry, next time 😃

#

I may have moved something, or deleted something, and it just broke everything

#

I need to learn how things work 'under the hood'

#

Any suggestions, docs , books, videos, tutorials?

weary fog Jul 23, 2020, 2:00 PM

#

i don't have Programs folder what should i do

📎 unknown.png

long wave Jul 23, 2020, 3:52 PM

#

Has anybody had any luck exposing eMESH_MULTIPLE and eMESH_BOTH_SIDES for trace queries?

#

Ideally trying to add them as options within FCollisionQueryParams - but certain physics types appear to just hardcode the flags.

#

Looks like PxScene::raycastMultiple will give what I need

lusty spire Jul 23, 2020, 6:00 PM

#

Is there any official way to reach out to devs and request few methods to be marked as virtual? I have tried it on forums, but that is obviously not the way https://forums.unrealengine.com/development-discussion/engine-source-github/1787988-staff-marking-method-as-virtual-request

Unreal Engine Forums

I am not sure, if there are some official requests forms for this type of request. If so, please let me know.

With Paper2D being quite some time without any update, I wanted to give it some love and introduce few optimisation. I found class PaperSprite having almost no virtu...

elder falcon Jul 23, 2020, 6:14 PM

#

nope, forget it

#

just change them to virtual yourself

lusty spire Jul 23, 2020, 6:26 PM

#

@elder falcon Thanks, I thought so. The problem is that if I change it myself I cannot use those functions in plugins or other distributable code. I am happy to fix problems with Paper2D, but without a proper way of distributing it, it feels like ton of wasted effort

gloomy hamlet Jul 23, 2020, 6:28 PM

#

You can try making a PR on Github. But can take ages, and depending on who reviews it there's a good chance it'll end up being rejected anyway.

lusty spire Jul 23, 2020, 6:30 PM

#

@gloomy hamlet Worth a shot, thanks

grizzled breach Jul 23, 2020, 7:57 PM

#

Does it take time for public hotfix to get merged in the release branch on git?

weary fog Jul 23, 2020, 9:08 PM

#

Is there a way to fix C4800 and MSB3075 without building engine from scratch?

quick crystal Jul 24, 2020, 1:40 AM

#

I am seeing the epic launcher showing UE 4.25.2 available, but I can't find a single article about it

hidden hedge Jul 24, 2020, 1:58 AM

#

it came out today and the forum thread for hotfixes was updated

#

https://forums.unrealengine.com/unreal-engine/announcements-and-releases/1791750-4-25-2-hotfix-released

Unreal Engine Forums

The 4.25.2 Hotfix is now live!

Feel free to discuss this release on the 4.25 forum thread (https://forums.unrealengine.com/unreal-engine/announcements-and-releases/1755531).

If you experience a bug with the 4.25.2 Hotfix, please follow the How To Report a Bug Guide (https://...

opaque lotus Jul 24, 2020, 4:21 AM

#

Anyone else finding that github doesn't appear to have 4.25.2 ?

#

release branch sits at 4.25.1 still and there's no 4.25.2 tag

sudden flume Jul 24, 2020, 9:44 AM

#

Hello! I have a couple questions about the source. Any info would be greatly appreciate as I'm both new to Unreal, and building things through VS. (Though Youtube has helped a lot with getting it running!)

Are there any ways to launch a custom version of the editor without Visual Studio? I've been using VS for the last few days, and I'm a little concerned that I might need to rebuild UE4 if I have to close VS due to a restart or something. 😭 (My PC's on the lower-end so building takes about an hour and a half.) If not; then would me replacing the files in the current unreal version with the files from my custom source make Unreal launch my custom source over Unreal's default source?

Another question is: Is there any easy way to get marketplace content? For plugins I already figured out that I can just copy them from the editor editions of unreal, and put their files in the custom source's files, but I'm concerned Marketplace may not be that easy? I'm not 100% sure though I haven't tried just yet.

opal gorge Jul 24, 2020, 11:34 AM

#

📎 Capture.PNG

#

Going from 4.25.1 to 4.25.2
Does this file change count sound right??
Seems like a lot...

jagged sinew Jul 24, 2020, 11:48 AM

#

Is that the number of files or just lines?

opal gorge Jul 24, 2020, 11:49 AM

#

Number of files

#

I know that epic changed a lot of the Copyright claims at the top of files but this number just seems wrong...

fresh coral Jul 24, 2020, 2:11 PM

#

@sudden flume You can launch the editor without VS by double clicking on your uproject file, or by running Engine\Binaries\Win64\UE4Editor.exe (adjust as required if you're not on windows)

sudden flume Jul 24, 2020, 2:11 PM

#

Thank you!

fresh coral Jul 24, 2020, 2:12 PM

#

for marketplace content, plugins are the most annoying because you need to install them to a launcher build and copy, for non-plugin assets you can just select the "show all projects" box when installing and it will show projects associated with your source build

#

📎 unknown.png

#

@opal gorge I didn't look closely when I rebased my local changes but pretty sure it wasn't nearly that many changes, because the diff window was a reasonable size and loaded with reasonable speed

opal gorge Jul 24, 2020, 2:49 PM

#

@fresh coral thanks for the info. Not sure what is wrong with mine...

fresh coral Jul 24, 2020, 3:03 PM

#

yeah 292 files, 5261 additions, 4556 deletions between 4.25.1 and 4.25.2

sudden flume Jul 24, 2020, 3:27 PM

#

@fresh coral Ohhh I see!! Thank you for that I've been really enjoying using prefabricator & a few unreal assets from the asset store in the editor builds so that's really helpful!

I have one more question though. When you get a new custom build of the engine do you need to run the setup every time?

#

I'm interested in trying a new toon-method someone made the other day (https://github.com/Ikeiwa/UnrealEngine-Toon), but I'm just unsure if I need to do the entire setup or if I can maybe skim down about 2 hours off of that process.

fresh coral Jul 24, 2020, 3:28 PM

#

you should re-run the setup, because a thing that can change is the external dependencies stored outside of git

#

setup is incremental and won't do anything if it isn't required, I re-run setup and GenerateProjectFiles.bat everytime i get new engine updates

sharp stag Jul 24, 2020, 4:07 PM

#

how big is the source build for 4.25.2?

fresh coral Jul 24, 2020, 5:44 PM

#

do you mean relative to 4.25.1 or just in general?

#

my unrealengine directory is 147gb

sharp stag Jul 24, 2020, 6:44 PM

#

in general

fresh coral Jul 24, 2020, 7:05 PM

#

I have both development and debug binaries in there so ~150gb is probably a little on the high side but is probably a decent working estimate. I use filesystem compression so actual size on disk is 80gb

sharp stag Jul 24, 2020, 7:44 PM

#

ok thx

teal plinth Jul 25, 2020, 4:09 PM

#

if I want to edit a source file do I have to build source all over again?

fresh coral Jul 25, 2020, 5:38 PM

#

it will build everything affected by the file you changed, that can be very small or very large depending on what file it is

elder falcon Jul 26, 2020, 1:26 PM

#

no, 4.25.3 will

elder falcon Jul 26, 2020, 3:45 PM

#

https://github.com/EpicGames/UnrealEngine/commit/d407331fff7ba16d805a80f24f58a540ad7b5b50

#

actually, seems like this got in 4.25.2, so I was mistaken there

#

normally use a fork directly off the 4.25 branch so wasn't sure where exactly the release was

quick crystal Jul 26, 2020, 4:21 PM

#

Hey everyone, not sure if anyone else has run into this or not, but ever since I upgraded to 4.25 I can no longer use Attach To Process.

#

I noticed the type is now Python... do I really need a certain version of python installed to use Attach to Process now?

#

I'm trying to debug the server process that spawns inside of the PIE... I could do this in UE 4.23.x

#

oops. Disregard. VS is just detecting it automatically as python. I had to explicitly
force the types to debug... never had to do that before.

quick crystal Jul 26, 2020, 5:06 PM

#

Ok, well now to the real problem... has anyone encountered this crash in 4.25.x? It randomly happens when I open animation assets

Assertion failed: !UICommandBindingMap.Contains(InUICommandInfo) [File:C:/Source/Repos/UnrealEngine/Engine/Source/Runtime/Slate/Private/Framework/Commands/UICommandList.cpp] [Line: 62]
Command list already contains a command named 'Rename'

#

📎 unknown.png

#

sorry, meant to only post in the VS window

blissful bramble Jul 26, 2020, 5:18 PM

#

Does anyone know how to add more material properties?

fluid roost Jul 26, 2020, 9:10 PM

#

I don't know if this is the right channel, but I am trying to compile unreal on linux and when I run it I get this error:
./UE4Editor: symbol lookup error: /usr/lib/x86_64-linux-gnu/libvulkan_radeon.so: undefined symbol: amdgpu_bo_list_create_raw
What is the issue here?

#

libvulkan_radeon.so does exist

mint vault Jul 27, 2020, 3:33 AM

#

I'm trying to run ue 25.1 from source, but I get an error on this line UE_LOG(LogICUInternationalization, Fatal, TEXT("ICU data directory was not discovered:\n%s"), *GetPrioritizedDataDirectoriesString());

#

So apparently that folder doesn't exist, but I'm not quite sure where to make it. I tried adding it directly to the engine folder because that was one of the folder in PotentialDataDirectories in code just prior to that error

serene yew Jul 27, 2020, 3:55 AM

#

Is this channel the proper place to ask questions concerning broken projects/builds?

#

At first I assumed that this was a channel for people who were working directly on the UE source (like someone who had forked the engine's repo to contribute to it), but now I realize that this may be just for anything related to working with the source code that doesn't belong in #cpp

#

Okay, well, it looks like it is, judging from other people's posts...

mint vault Jul 27, 2020, 4:38 AM

#

I'm trying to run ue 25.1 from source, but I get an error on this line UE_LOG(LogICUInternationalization, Fatal, TEXT("ICU data directory was not discovered:\n%s"), *GetPrioritizedDataDirectoriesString());
I got this sorted by updating the source to 25.2

serene yew Jul 27, 2020, 4:43 AM

#

Does anyone here use Visual Studio Code (not regular Visual Studio) on MacOS?

errant berry Jul 27, 2020, 6:58 AM

#

I got this error while updating dependency.

📎 unknown.png

#

any idea how to resolve this

small cobalt Jul 27, 2020, 7:01 AM

#

Where ever you have put the UnrealEngine Source files is resulting in to long of a file path.

#

Its important to ensure that you put the UnrealEngine directory as close to the drive root as possible.

errant berry Jul 27, 2020, 7:02 AM

#

oh ok thanks for your help

tired lintel Jul 27, 2020, 7:43 AM

#

I need to see how unreal.AssetToolsHelpers.get_asset_tools().import_asset_tasks works. How can I find it in the source code?? (UE 4.23)

lethal heron Jul 27, 2020, 10:05 AM

#

has anyone here experience setting up a build automation aka. CI for a source build?
Thinking of using jenkins to listen to perforce submits, and starting builds then, aswell as nightly builds.
Is jenkins alone suffice to do that, or would you recommend tools like the BuildGraph or UGS to start the build process?

#

also: is the Engine/Source folder needed e.g. when you would want to distribute small builds to your artists?

#

this is almost the biggest folder when you build from source, with ~16gb out of the 36

blissful bramble Jul 27, 2020, 10:37 AM

#

I'm trying to make a shading model but I can't find the switch(GetShadingModel()) in MaterialShared.cpp in the latest version of Unreal, does anyone know what happened to it?

blissful bramble Jul 27, 2020, 11:33 AM

#

Nevermind, I think I found it in HLSLMaterialTranslator.cpp, I'll compile it later and check if it works.

blissful bramble Jul 27, 2020, 3:44 PM

#

I don't know if I did that properly but I definitely did something wrong because the build failed with error MSB3073

#

I followed this https://medium.com/@lordned/ue4-rendering-part-6-adding-a-new-shading-model-e2972b40d72d tutorial in the latest version of unreal. Does anyone know how to fix it?

Medium

Unreal Engine 4 Rendering Part 6: Adding a new Shading Model

Adding a new Shading Model

junior trail Jul 27, 2020, 4:06 PM

#

does anyone know what is causing the bug where engine verisions 4.25* affecting the IDE to not recognize any of the source code and as a result errors out everything (but compiling still works fine) i tought if i just waited long enough a fix would come but 4.25.2-release and it is still there. Is there a way to fix it myself?

serene yew Jul 27, 2020, 4:42 PM

#

@junior trail you may be experiencing the same thing I am. I was getting something similar, so I:

Created a new project (C++).
Added a new class (clicked Public, so it would create the Public and Private dirs)
File > Generate Visual Studio Code project
File > Open Visual Studio Code
Closed UE4Editor
Compiled the project's Editor Development build (success)
Opened UE4Editor:
It claims that there are missing modules, recompile? I click yes.
Error, cannot recompile.

but I just did! 🥺

junior trail Jul 27, 2020, 4:46 PM

#

well my problem is just in the IDE, compiling and running the engine works just fine. im using CLion, i wonder if that might affect it

serene yew Jul 27, 2020, 4:48 PM

#

Check this out

#

It only does that if I click on the UE icon in the dock

#

If I open a terminal and do:

cd /path/to/cwd
/Users/Shared/blah/blah/blah/UE4Editor /Users/myname/blah/blah/blah/myproject.uproject

It runs just fine!

#

Same thing the Build+Run should do (the Run part anyway) according to my launch.json

#

So what's going on here?

junior trail Jul 27, 2020, 4:51 PM

#

so you can run the .uproject trough UE4Editor?

serene yew Jul 27, 2020, 4:51 PM

#

Yes. But only if I launch it from the Terminal instead of the dock

#

Weird, right

#

I am sure that the dock icon in question is the same exact path. I did "open in finder" and checked it

#

errr points to the exact same path

#

Does the same thing work for you?

#

I dunno what type of box you're on, your terminal commands may be different than mine

#

check your build settings to see what the IDE is told to do

junior trail Jul 27, 2020, 4:54 PM

#

i have no idea whats happening for you, but im pretty sure we dont have the same problem

serene yew Jul 27, 2020, 4:55 PM

#

Mine looks like:

{
    "name": "KittyCatastropheEditor (Development)",
    "request": "launch",
    "preLaunchTask": "KittyCatastropheEditor Mac Development Build",
    "program": "/Users/Shared/EpicGames/UE_4.25/Engine/Binaries/Mac/UE4Editor.app/Contents/MacOS/UE4Editor",
    "args": [
      "/Users/wes/Documents/UnrealProjects/KittyCatastrophe/KittyCatastrophe.uproject"
    ],
    "cwd": "/Users/Shared/EpicGames/UE_4.25",
    "type": "lldb"
}

so that's why I changed directory (to whatever "cwd" says) before launching

#

in the terminal

#

then just type [program] [args]

#

substituted for whatever that says

#

I am still not satisfied, I don't want to have to do that every time I want to launch the editor, but more importantly than it allows me to launch the editor is I may be getting closer to figuring out WTF!

fresh coral Jul 27, 2020, 5:07 PM

#

@lethal heron despite the name that folder actually contains a lot of third party binaries that make up the bulk of the size, and your artists probably need those. https://docs.unrealengine.com/en-US/Programming/Deployment/index.html has some details on how to get your engine build to your non-programmers

Deploying the Engine

Learn what it takes to to deploy UE4 to a team.

blissful bramble Jul 27, 2020, 9:28 PM

#

I followed this https://medium.com/@lordned/ue4-rendering-part-6-adding-a-new-shading-model-e2972b40d72d tutorial in the latest version of unreal. Does anyone know how to fix it?
I updated Visual Studio and it fixed the problem

Medium

Unreal Engine 4 Rendering Part 6: Adding a new Shading Model

Adding a new Shading Model

blissful bramble Jul 27, 2020, 10:46 PM

#

nvm, it just happened again :/

dusty inlet Jul 28, 2020, 9:23 AM

#

Hey

#

How does unreal's renderer abstraction work? does it decide which call should go to the selected API at init time or at the actual call time?

#

And where is the entry point of VulkanRHI? where a FRHIVulkanInstance and FRHIVulkanDevice are actually created?

#

I've been reading the source code of the RHI but i can't wrap my mind around it.

jagged sinew Jul 28, 2020, 9:33 AM

#

Does it decide which call should go to the selected API at init time or at the actual call time?
@dusty inlet I think that depends on if it's a dynamic or static mesh batch. See https://docs.unrealengine.com/en-US/Programming/Rendering/MeshDrawingPipeline/index.html and https://docs.unrealengine.com/en-US/Engine/Rendering/Overview/index.html

Mesh Drawing Pipeline

Product documentation including reference and guides for Unreal Engine 4

Rendering Overview

Overview of the main features of the rendering subsystem.

#

By API, do you mean OpenGL, Vulkan, Direct3D, etc, or glDrawArrays and the like? The former is decided at startup, for the latter see the links above.

dusty inlet Jul 28, 2020, 9:36 AM

#

Thanks ibbles. Yes i mean graphics API like opengl and vulkan.

blissful bramble Jul 28, 2020, 10:24 AM

#

nvm, it just happened again :/
@blissful bramble Nvm it was a different error XD

hexed valley Jul 28, 2020, 2:28 PM

#

Hey Guys, I built UE4 from source and I can run my game and build a linux dedicated server. However, When I try to generate visual studio project files, I don't get my sln file back. I read the log file but it doesn't tell me any errors. Any suggestions how to fix?

livid fiber Jul 28, 2020, 9:21 PM

#

Hey guys, does anybody know, if it is possible to add custom shading model by plugin?

tropic tapir Jul 28, 2020, 11:22 PM

#

this might be a mobile question but for iOS/TvOS, I'm guessing I would have to edit the source code to add the standard controller's R3 and L3 buttons/inputs, can anyone share any advice on how I could add this functionality?

blissful bramble Jul 29, 2020, 12:08 AM

#

I added a new function in ShadingModels.ush and I call it when my custom shading model is selected but whenever I use GBuffer.DiffuseColor inside of it, I get this error: "variable GBuffer used without having been completely initialized". I am already using GBuffer to get two custom parameters and they work fine.
Any ideas?

heady gate Jul 29, 2020, 3:44 AM

#

Posting here too, cause might be more relevant to this channel...

Hello! So I have an annoying thing that's bugging me here... I have a Commandlet that's running that loads and inits packages and worlds. I want to completely tear down and destroy a world, before reloading it entirely to ensure it's fully clean. I keep hitting the ensure inside UWorld::InitWorld because whatever I try, bIsWorldInitialized is not being reset. Do I have to manually set that? Or am I not calling the correct method of shutting down a world?

heady gate Jul 29, 2020, 5:31 AM

#

So, bit of a hack, but it turns out that calling InitWorld on a world that had bIsWorldInitialized = false set, caused a NiagaraWorldManager error. Through some trial and error, I hacked in a call to FWorldDelegates::OnPreWorldFinishDestroy.Broadcast(World); to remove the world from the WorldManager, and that seemingly worked... If I tried to get the NiagaraWorldManager to fully clean up from the world, it was destroying the world entirely, so the next time I tried to grab it from the package, it returned nullptr, which is obviously not great. Hopefully this hack works 🤷‍♂️

heady gate Jul 29, 2020, 7:07 AM

#

Well, it failed, because Niagara now fails a check on editor startup in the level. I hate everything 😦

ornate fjord Jul 29, 2020, 2:04 PM

#

if I got 23.1 from source and changed nothing except add console plugins, could I just pull from the current tag to upgrade, or would it be smarter to clone the entire thing on the latest version?

fresh coral Jul 29, 2020, 2:22 PM

#

@ornate fjord you will end up with the same sources on disk either way

main mortar Jul 29, 2020, 3:50 PM

#

I want to build 4.25 source, I am wondering does anyone know how many GB that will consume?

jagged sinew Jul 29, 2020, 4:25 PM

#

About 100 GB, I would guess. I have 77 GB for 4.22 and 109 GB for 4.24.

fading venture Jul 29, 2020, 4:28 PM

#

Hello everyone, This is an excerpt from a memreport. Does anyone know what the numbers on extreme left represent? Their sum overshoots Process Physical Memory:

📎 Stats.txt

elder falcon Jul 29, 2020, 4:30 PM

#

vram usage

#

categorized

#

not individual entries, some of these are groups that include other entries in their size

#

though there are also others in here

#

it's basically just a dump of various memory stats

fading venture Jul 29, 2020, 4:35 PM

#

@elder falcon Ah! so those values may overlap? Or their sum should match any numbers above?

elder falcon Jul 29, 2020, 4:36 PM

#

they will overlap yes

#

some of them are for ram usage and some for vram usage

#

for example, Persistent Uber Graph Frame memory is related to blueprints and SkeletalMesh Index Memory is on the GPU

fading venture Jul 29, 2020, 4:42 PM

#

welp, in order to get more accurate list for RAM usage, is there a way to list items which use RAM? is there any flag that i need to set for eg. just print elements belonging to STATGROUP_Memory

📎 image.png

#

@elder falcon Thanks for the quick responses! 😄

elder falcon Jul 29, 2020, 4:51 PM

#

there are a lot of ways to see what uses memory

#

there is the memory stats in the engine

#

there is LLM

#

there will soon be memory insights (in 4.26)

#

there is the old memory profiler

#

I think there is also an integration with MemPro (3rd party software)

fading venture Jul 29, 2020, 4:56 PM

#

@elder falcon amongst those I found memreport to include most detailed data, which I export to a csv file using the parser I wrote. Was just adding them up to see whether it matched the numbers above. But thank you so much for you insights! 🙂

blissful bramble Jul 29, 2020, 6:30 PM

#

I added a new function in ShadingModels.ush and I call it when my custom shading model is selected but whenever I use GBuffer.DiffuseColor inside of it, I get this error: "variable GBuffer used without having been completely initialized". I am already using GBuffer to get two custom parameters and they work fine.
Any ideas?
After testing a few things I realized that the problem is probably with the parameters I added so I'll change my question: Does anyone know how to add variables to the GBuffer?

fierce moss Jul 29, 2020, 8:26 PM

#

Hello! Could anyone explain the relation between FMaterial and FMaterialShaderMap? Thanks! 🙂

pure plover Jul 29, 2020, 10:08 PM

#

I'm really looking for someone who is really expert / confortable with coding / blueprint, to help me achieve/create dockable/sizeable windows in unreal engine please. Please dm me if you're that persoon

stable hemlock Jul 29, 2020, 11:01 PM

#

@jade trench hey

jade trench Jul 29, 2020, 11:01 PM

#

yea

stable hemlock Jul 29, 2020, 11:02 PM

#

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" >> %LOG%

::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 >> %LOG%
``` that should do it. replace DRIVE, engineversion and stuff with the engine version.

#

auto gets the latest version. make sure to set %ENGINEVERISON% as a variable.

jade trench Jul 29, 2020, 11:02 PM

#

just copy and paste that in cmd?

stable hemlock Jul 29, 2020, 11:03 PM

#

been using this for about a year works really well.

#

no, you have to set the variables.

jade trench Jul 29, 2020, 11:03 PM

#

uh

stable hemlock Jul 29, 2020, 11:03 PM

#

paste it in notepad.. save as a .bat

#

set the vars

#

do you know how to set vars in batch files? 🙂

jade trench Jul 29, 2020, 11:03 PM

#

nope

stable hemlock Jul 29, 2020, 11:03 PM

#

set ENGINEVERSION=4.25.3
set DRIVE=F

#

there you are. replace drive with your drive of installation.

#

remove the >> %LOG% parts

#

from the script above

jade trench Jul 29, 2020, 11:04 PM

#

ok

#

looks like its working

#

slowly, but working lol 6mb/s

#

why's it so slow tho, task manager says im recieving like 40mb/s

stable hemlock Jul 29, 2020, 11:07 PM

#

works? nice

#

yeah i used this bad boy for a while. saved me a ton of time

#

i was goign to give my script to epic for them to use lol

#

but haven't yet

#

git takes a while to DL. they set caps on user downloads.

jade trench Jul 29, 2020, 11:08 PM

#

oh ok

stable hemlock Jul 29, 2020, 11:08 PM

#

yep

jade trench Jul 29, 2020, 11:08 PM

#

yeah u should sell it on the marketplace

stable hemlock Jul 29, 2020, 11:08 PM

#

make sure you updated your visual studio stuff too

jade trench Jul 29, 2020, 11:08 PM

#

ppl would def pay for it

#

wdym

stable hemlock Jul 29, 2020, 11:08 PM

#

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

Setting Up Visual Studio for Unreal Engine

Tips, tricks, and techniques for setting up Visual Studio to work with Unreal Engine 4.

#

📎 VS2017_SettingsInstaller.png

jade trench Jul 29, 2020, 11:08 PM

#

u mean like rebuilding Unreal?

stable hemlock Jul 29, 2020, 11:09 PM

#

further, i would recommend getting vs 2019

jade trench Jul 29, 2020, 11:09 PM

#

ohh i did that a while ago

#

ive had that setup since I installed Unreal

stable hemlock Jul 29, 2020, 11:09 PM

#

i use vs2019 as i had some compilation issues with 4.25.2

#

cool

jade trench Jul 29, 2020, 11:10 PM

#

do I have to rebuild UE tho

stable hemlock Jul 29, 2020, 11:10 PM

#

that script builds the engine, yes.

jade trench Jul 29, 2020, 11:10 PM

#

oh ok

#

nice

stable hemlock Jul 29, 2020, 11:10 PM

#

you may be best off getting the engine from the epic games launcher if you are not doing dedicated online servers.

#

my video game has a dedicated linux server as a host, so i must build the engine.

jade trench Jul 29, 2020, 11:11 PM

#

nah that thing is a piece of shit, I cant even generate an .ipa file from it

stable hemlock Jul 29, 2020, 11:11 PM

#

well it has it's limits that's for sure. but i do like all of epic's software 🙂 almost worked there

#

plus the epic store is based off of the launcher so it's important for them as a company.

#

EpicGamesStore

jade trench Jul 29, 2020, 11:12 PM

#

also Ive always wondered whats the fakeplatformxxx thing

#

like its an option in packaging

stable hemlock Jul 29, 2020, 11:13 PM

#

i think it's a proxy name

#

never used it before.

jade trench Jul 29, 2020, 11:14 PM

#

ok

#

@stable hemlock You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

git checkout -b <new-branch-name>

#

what do i do

#

oh nvm now its updating dependencies

jade trench Jul 30, 2020, 12:33 AM

#

@stable hemlock Running UnrealHeaderTool UE4Editor "C:\unreal\src\UnrealEngine-4.25.3-release\Engine\Intermediate\Build\Win64\UE4Editor\Development\UE4Editor.uhtmanifest" -LogCmds="loginit warning, logexit warning, logdatabase error" -Unattended -WarningsAsErrors -abslog="C:\unreal\src\UnrealEngine-4.25.3-release\Engine\Programs\UnrealBuildTool\Log_UHT.txt"

#

is this a problem?

quick crystal Jul 30, 2020, 12:39 AM

#

Please tell me someone here is also having a problem with opening multiple animation editor windows and having the editor crash

#

I'm hoping there is light at the end of the tunnel. It is very annoying. I have to remember to run the editor in debug mode so I can catch the exception about how there is a duplicate command being inserted

jade trench Jul 30, 2020, 12:39 AM

#

I havent ever done that

quick crystal Jul 30, 2020, 12:40 AM

#

if I am not running in debug mode, it just crashes all together

#

I'm running the stock editor from source

stable hemlock Jul 30, 2020, 12:40 AM

#

@jade trench only if the log has an error, or fatal error during compilation is it an error.

#

the script works fine for me.

#

check the log to be sure.

#

  [4024/4028] UE4Editor-PixelStreaming.dll
     Creating library F:\unreal\src\UnrealEngine-4.25.3-release\Engine\Plugins\Media\PixelStreaming\Intermediate\Build\Win64\UE4Editor\Development\PixelStreaming\UE4Editor-PixelStreaming.suppressed.lib and object F:\unreal\src\UnrealEngine-4.25.3-release\Engine\Plugins\Media\PixelStreaming\Intermediate\Build\Win64\UE4Editor\Development\PixelStreaming\UE4Editor-PixelStreaming.suppressed.exp
  [4025/4028] UE4Editor-DetailCustomizations.dll
     Creating library F:\unreal\src\UnrealEngine-4.25.3-release\Engine\Intermediate\Build\Win64\UE4Editor\Development\DetailCustomizations\UE4Editor-DetailCustomizations.suppressed.lib and object F:\unreal\src\UnrealEngine-4.25.3-release\Engine\Intermediate\Build\Win64\UE4Editor\Development\DetailCustomizations\UE4Editor-DetailCustomizations.suppressed.exp
  [4026/4028] UE4Editor-NiagaraEditor.dll
     Creating library F:\unreal\src\UnrealEngine-4.25.3-release\Engine\Plugins\FX\Niagara\Intermediate\Build\Win64\UE4Editor\Development\NiagaraEditor\UE4Editor-NiagaraEditor.suppressed.lib and object F:\unreal\src\UnrealEngine-4.25.3-release\Engine\Plugins\FX\Niagara\Intermediate\Build\Win64\UE4Editor\Development\NiagaraEditor\UE4Editor-NiagaraEditor.suppressed.exp
  [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
``` should be the last few lines

#

if there is no error before total execution time there's obviously not an error.

blissful bramble Jul 30, 2020, 1:01 AM

#

After testing a few things I realized that the problem is probably with the parameters I added so I'll change my question: Does anyone know how to add variables to the GBuffer?
Still looking for an answer

jade trench Jul 30, 2020, 1:03 AM

#

@stable hemlock it seemed to download seperately

#

instead of updating, I think I just installed the entire thing

#

but there's no ue4.exe in it

#

so i cant launch it

#

in fact a lot of files are missing

stable hemlock Jul 30, 2020, 1:06 AM

#

@jade trench the script installs the entire engine from scratch. F:\unreal\src\UnrealEngine-4.25.3-release\Engine\Binaries\Win64\UE4Editor.exe is the executable. sorry i can't be of more guidance than that, just to get the latest ue version is all that was requested

jade trench Jul 30, 2020, 1:06 AM

#

but almost all the files are missing

stable hemlock Jul 30, 2020, 1:06 AM

#

files aren't missing from that engine build

#

i use it for my game, works fine.

#

which file is missing?

jade trench Jul 30, 2020, 1:07 AM

#

everything pretty much lol

stable hemlock Jul 30, 2020, 1:07 AM

#

don't know what you're talking about. sorry.

jade trench Jul 30, 2020, 1:07 AM

#

the better question would be what isnt missing

#

im gonna delete and retry

stable hemlock Jul 30, 2020, 1:07 AM

#

@jade trench https://docs.unrealengine.com/en-US/Programming/Development/BuildingUnrealEngine/index.html

Building Unreal Engine from Source

Compiling Unreal Engine from source.

#

follow that guide if my script doesn't work for you please. thanks.

ornate fjord Jul 30, 2020, 8:27 AM

#

so trying to upgrade from 4.23 to 4.25, what does this mean The platform name Quail is not a valid platform name.

#

what's quail?

#

ah wait forgot to regen project files

#

maybe that's it

#

ok yeah seemed to be fixed, was either the generate or me forgetting to update the console plugins first 😄

#

nvm it's back

#

fml

ornate fjord Jul 30, 2020, 9:23 AM

#

ok I'm just stupid guys, it was google analytics plugin

opal gorge Jul 30, 2020, 1:17 PM

#

Does anyone know what github branch the latest version of Chaos is?

elder falcon Jul 30, 2020, 5:16 PM

#

release-engine-staging

tropic pine Jul 30, 2020, 5:30 PM

#

Hey, I've recently gotten UE 4.25.1-release from github on linux and compiled it, altough I didn't succeed at opening my already existing windows 10 project (prebuilt 4.25.1), as it would tell me that the versions are different and it would suggest me to rebuild the project for my natively compiled version. I wanna know if there is a way to open my win project on linux without changing the version of the original project, thanks. I've tried asking for helps on other platforms but didn't get any helpful answers.

fresh coral Jul 30, 2020, 5:44 PM

#

I'm not sure what you're asking, you want to use the binaries you built for windows with your linux build? That's not going to work.

tropic pine Jul 30, 2020, 5:58 PM

#

Yep, use the prebuild binaries for Windows on Linux

#

Sad

#

I mean. just open a project that was created on the Windows version

#

Well, unlucky

stable hemlock Jul 30, 2020, 6:51 PM

#

@tropic pine only thing you should really be doing here is cross-compiling for linux from windows. more effective workflow IMO https://docs.unrealengine.com/en-US/Platforms/Linux/GettingStarted/index.html . are you trying to compile the engine and dev on linux?

Cross-Compiling for Linux

#

start "COMPILE LINUX SERVER" /MIN /WAIT CMD /C ""%DRIVE%:\unreal\src\UnrealEngine-%ENGINEVERSION%-release\Engine\Build\BatchFiles\Build.bat" -Project="%GAMEPATHWIN% %ENGINEVERSION%\%UPROJECTNAME%.uproject" -Target="%SERVERTARGET% Linux Development" -WaitMutex -FromMsBuild"

start "PACKAGE LINUX SERVER" /MIN /WAIT CMD /C ""%DRIVE%:\unreal\src\UnrealEngine-%ENGINEVERSION%-release\Engine\Build\BatchFiles\RunUAT.bat" -ScriptsForProject="%GAMEPATH% %ENGINEVERSION%/%UPROJECTNAME%.uproject" BuildCookRun -project="%GAMEPATH% %ENGINEVERSION%/%UPROJECTNAME%.uproject" -noP4 -clientconfig=Shipping -serverconfig=Shipping -nocompileeditor -ue4exe=UE4Editor-Cmd.exe -utf8output -server -serverplatform=Linux -noclient -build -cook -map=%SERVERMAP% -unversionedcookedcontent -compressed -stage -package -compile"
``` parts of a script i use to package a linux sever that is hosted on a digital ocean droplet

tropic pine Jul 30, 2020, 7:01 PM

#

Yeah I just want to do cross-platform development

#

So do I do a native Windows + Linux cross-compilation now?

#

Wouldn't that also change my actual project version

fresh coral Jul 30, 2020, 7:07 PM

#

there's a few different things being meant by project version here

#

the thing that's probably confusing you is that the message you're seeing means "a specific directory with a source build of UE 4 in it" by version, not the same as "version 4.25.1 of the engine"

#

if this is troubling you, you probably do want to get a source checkout of the engine, retarget your uproject to use that directory (or directly embed your game in your source checkout) and then work from that source build on both linux and windows, regardless of whether you cross compile or not

#

don't try to use the launcher build on windows and a source build on linux

stable hemlock Jul 30, 2020, 7:23 PM

#

@tropic pine Development on Linux for Windows / Linux is typically not recommended, but if you develop on your windows partition for linux / android / mac / windows as output binaries it works fine.

#

@tropic pine ```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


this should download the latest unreal version for you and you can retarget your project as @fresh coral  suggested above after you have the new engine version in your windows partition

tropic pine Jul 30, 2020, 7:27 PM

#

Thank you very much. I will try this tomorrow, can't do it right now. Thanks again

#

If I have any issues I will write here again

blissful bramble Jul 30, 2020, 8:11 PM

#

After testing a few things I realized that the problem is probably with the parameters I added so I'll change my question: Does anyone know how to add variables to the GBuffer?
I tried adding a variable to FGBufferData and then giving it a value in BasePassPixelShader.usf but it still didn't fix the problem

hexed valley Jul 31, 2020, 3:43 AM

#

Hey Guys, I built the engine source code to deploy my game to windows/linux but for some reason I can't generate my project files for visual studio using the source. I tried building from command line using the build tool, and it generates all the folders/files except for the .sln file. Does anyone else have the same issue or perhaps a fix?

willow ether Jul 31, 2020, 7:21 AM

#

How is it possible that in 4.25 the runtime navigation is not rebuilding in the testing and shipping build, I wanted to show navigation debug in the testing build and it was not working then I realized that in the engine source draw debug helper is excluded from build with !UE_BUILD_TEST which was really a big wtf moment for me. Isn't the purpose of the test build to test things that are not working in the shipping build, so why it is like that? I had to change the source code so now I can see that navigation is broken, so now I can fix it, what a mess 😦

ornate fjord Jul 31, 2020, 9:07 AM

#

when you guys make changes to source code, do you just keep it in a separate repo, and do you keep the whole engine in there or only like actual source files like cpp and .h

#

hosting the whole shabang somewhere just for a few line changes seems maybe excessive

willow ether Jul 31, 2020, 12:02 PM

#

@ornate fjord press fork button at github repo page, pull branch you want, then make your own, change some files, commit and push

#

I finally managed to run the test build in the editor, because it was crashing with world composition, so now I can track down that runtime navigation issue, I feel like this engine is very buggy 😦

lusty spire Jul 31, 2020, 5:25 PM

#

Hey guys, ehm, is anyone else getting this error when compiling the newest github version?
1> [18/36] Module.CoreUObject.7_of_8.cpp 1>C:/ue4/425_fork/UnrealEngine/Engine/Source/Runtime/CoreUObject/Private/UObject/ScriptCore.cpp(1864): error C2065: 'BlueprintExceptionTracker': undeclared identifier 1>C:/ue4/425_fork/UnrealEngine/Engine/Source/Runtime/CoreUObject/Private/UObject/ScriptCore.cpp(1864): error C2789: 'ProcessEventDepth': an object of const-qualified type must be initialized 1> C:/ue4/425_fork/UnrealEngine/Engine/Source/Runtime/CoreUObject/Private/UObject/ScriptCore.cpp(1864): note: see declaration of 'ProcessEventDepth'

elder falcon Jul 31, 2020, 5:38 PM

#

no

lusty spire Jul 31, 2020, 5:38 PM

#

@elder falcon Thanks

fresh coral Jul 31, 2020, 6:14 PM

#

@willow ether the build config you probably want is "development"

#

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

Build Configurations Reference

Reference guide for solution and project build configurations.

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"test" is for game qa or automated tests

lusty spire Jul 31, 2020, 7:15 PM

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I didn't properly describe the what I meant by "newest github version", I meant master.
Is master branch currently broken?

elder falcon Jul 31, 2020, 7:20 PM

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master branch is often broken

lusty spire Jul 31, 2020, 7:32 PM

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I have fixed a bug in the Paper2D and I would like to submit it in the pull request. I am following the contribution tutorial and in which is stated the fork needs to be from latest master. How would one do that if the master is often broken?

elder falcon Jul 31, 2020, 7:36 PM

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just rebase it to master and hope it works

fresh coral Jul 31, 2020, 7:36 PM

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with some effort, sadly, wait for an unbroken master and make sure it builds and merges cleanly there

#

or build on release and rebase it on master, then review the errors and make sure they're not integration problems

#

integrating into master on a codebase the size and complexity of UE is never easy, paper2d being mostly abandoned should make it easier though

lusty spire Jul 31, 2020, 7:50 PM

#

Thanks for the info. I am still learning the workflow. Can I branch out from a master version from earlier today, which was working? Or does it have to be the latest?

fresh coral Jul 31, 2020, 7:54 PM

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when you submit the merge request it will need to be latest, but you can build and test against an earlier version and probably want to if the current latest is broken

fading venture Jul 31, 2020, 8:42 PM

#

Greetings everyone! has anyone tried turning on ENABLE_LOW_LEVEL_MEM_TRACKER and passing -llmtagsets=AssetClasses in command line args. Has anyone used this feature in ue4? I get following errors when I set that flag:

📎 pic2.png

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📎 pic.png

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📎 Untitled.png

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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.

fading venture Jul 31, 2020, 11:43 PM

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Hmm...turns out there were some missing headers which needed to be included, that's a problem for ue4 version <= 4.24, if enabled llm asset tracking

blissful bramble Aug 1, 2020, 1:58 AM

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After testing a few things I realized that the problem is probably with the parameters I added so I'll change my question: Does anyone know how to add variables to the GBuffer?
Bumping this again, still looking for an answer.

spiral mortar Aug 1, 2020, 3:09 AM

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@blissful bramble wdym?

blissful bramble Aug 1, 2020, 8:31 AM

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@spiral mortar I added two new material parameters and I want to access their values in a function in ShadingModels.ush. From what I understand, the only way to do that is to add them to FGBufferData but I don't know how to do that.

spiral mortar Aug 1, 2020, 8:33 AM

#

Have you looked at a similar engine feature?

blissful bramble Aug 1, 2020, 8:35 AM

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Yes, I tried to do the same thing but it didn't work. I probably missed some code parts

spiral mortar Aug 1, 2020, 8:35 AM

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What did you try to copy?

#

FGBufferData is per pixel, you probably want something global instead

blissful bramble Aug 1, 2020, 8:39 AM

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I mainly added stuff in BasePassPixelShader.usf

spiral mortar Aug 1, 2020, 8:40 AM

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C:\Program Files\Epic Games\UE_4.23\Engine\Source\Runtime\Renderer\Private\BasePassRendering.h

#

📎 unknown.png

#

maybe add your parameters there

#

Then here

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📎 unknown.png

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and you should be able to access it globally

blissful bramble Aug 1, 2020, 8:44 AM

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By material parameters I mean stuff like the base color or opacity that you can set in the material graph. I don't think this is related to them.

spiral mortar Aug 1, 2020, 8:44 AM

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thonking

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Where would you be setting them

blissful bramble Aug 1, 2020, 8:48 AM

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From what I understand, I need to create the variables inside GBufferData, then set the values inside BasePassPixelShader.usf. But I also need to encode and decode them with EncodeGBuffer()

spiral mortar Aug 1, 2020, 8:50 AM

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Not technically

#

but from a user perspective

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would it be per material settings

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console variables?

blissful bramble Aug 1, 2020, 8:53 AM

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📎 unknown.png

spiral mortar Aug 1, 2020, 8:54 AM

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Ah

#

I see now 😄

#

From what I understand, I need to create the variables inside GBufferData, then set the values inside BasePassPixelShader.usf. But I also need to encode and decode them with EncodeGBuffer()

#

sounds right

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what's not working @blissful bramble ?

blissful bramble Aug 1, 2020, 9:00 AM

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Mostly the encoding and decoding. I think I need to create a new GBuffer channel

spiral mortar Aug 1, 2020, 9:00 AM

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yeah, sounds pretty complex

blissful bramble Aug 1, 2020, 9:00 AM

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(like the ones you see when you change the view mode to buffer visualization -> overview)

spiral mortar Aug 1, 2020, 9:05 AM

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yup

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it's going to be a pain

blissful bramble Aug 1, 2020, 10:27 AM

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rip XD

lusty spire Aug 1, 2020, 2:16 PM

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I have a dumb question. I have created a pull request, made a silly mistake along the way, fixed it and those changes got approved by one of the devs. Is there anything else I should do or is it on Epic to merge it now? https://github.com/EpicGames/UnrealEngine/pull/7220

spiral mortar Aug 1, 2020, 11:38 PM

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@lusty spire projectgheist might not be an epic dev

#

You'll just have to wait for epic to get their eyes on this

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might take a few days, or a few months

lusty spire Aug 1, 2020, 11:49 PM

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@spiral mortar Thanks, I didn't know that non-staff users can do reviews and approves changes.

elder falcon Aug 2, 2020, 1:28 AM

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or instead of a few months, it might take 3 years, or the more likely case, nothing happens at all

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I noticed they recently stopped bothering to add labels to new ones

stable hemlock Aug 2, 2020, 7:56 AM

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they do accept quick fixes a lot though

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its just that they stopped updating the pull requests even though they accept them

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sometimes they accept a PR within a day

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it depends on a dev seeing it and the PR being simple enough I guess

brisk silo Aug 2, 2020, 9:13 AM

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yeah, simple PRs are the ones that do get merged

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anything bigger and it goes into eternal limbo

stable hemlock Aug 2, 2020, 9:50 AM

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I don't blame them on that tbh

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especially when they are going for a restructuring effort for ue5

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they still did merge medium to big sized stuff back in the day, I think multiplayer rebasing started as a PR iirc, don't remember if they accepted that PR or did it on their own though

old tinsel Aug 2, 2020, 10:17 AM

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Hello guys I'm not sure if this is the right place to ask. I have a problem understanding some source code and 2 other functions. Is it OK if I ask here?

topaz stirrup Aug 2, 2020, 4:16 PM

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yes

old tinsel Aug 2, 2020, 6:19 PM

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So who knows about c++, object replication and other stuff, please dm me. I have not found answers for my problems in a while

quick mica Aug 3, 2020, 7:44 AM

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Why don't you just ask your question oO

ornate fjord Aug 3, 2020, 8:31 AM

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is there any way to add a binary version from a source build to the epic games launcher?

ornate fjord Aug 3, 2020, 9:11 AM

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anyone know why on some people's pc it would say VCRUNTIME140_1.dll was not found

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they have vs installed

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the weird thing is the _1 at the end

quick mica Aug 3, 2020, 10:22 AM

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4.25.3 is latest source version and at least for me it's stable enough

quick mica Aug 3, 2020, 11:44 AM

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I was fine with both, also 4.25.1 worked good for me, so no Idea if it would work for your case...^^

old tinsel Aug 3, 2020, 5:40 PM

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@quick micaFirat of all i can't really understand what the UObject->GetUniqueID(). It returnes the place in gobject array, and I have no idea what this means.

shrewd thorn Aug 3, 2020, 8:20 PM

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@ornate fjord you cannot use the launcher to distribute custom source builds. I recommend using UGS: https://docs.unrealengine.com/en-US/Programming/Deployment/UnrealGameSync/index.html

UnrealGameSync (UGS)

An overview of UnrealGameSync (UGS), an internal tool used by developers to sync their Workspace with a project's stream.

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The "check the binaries into p4 and set up a bunch of custom filters" method sucks

plush shadow Aug 3, 2020, 9:23 PM

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git is so... so... slow

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@shrewd thorn requires perforce right?

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UGS, been curious about it, it's unclear how it works at a glance of the documentation imo

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I mean, some of the quotes regarding this thing?

Conceptually, UGS is a tool that promotes code and content integration in a collaborative development environment,
what does that even mean? don't SCM tools also do this?

shrewd thorn Aug 3, 2020, 9:38 PM

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It's basically a wrapper on top of p4, yeah

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I've never used Git to deploy binaries, I contracted for one studio where it worked well, they had git LFS working and it was okayish

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But trying to explain git to artists is not easy. I'm a programmer and barely understand it

plush shadow Aug 3, 2020, 9:46 PM

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currently using SVN, generally perforce is just the best choice for UE4

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SVN is decent

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Yea, I used to understand git, at least to some extent

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I don't anymore

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for me that says a lot about the system

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it's to complex imo for a day to day tool

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when I mentioned git, I was referring to the github version of the engine

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I didn't even check it out, just got the code github downloaded as a zip and added that to a local git repo

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it took ages just to add everything

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reverting one file, it just sat there for awhile

stable hemlock Aug 4, 2020, 2:02 AM

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I'm currently trying to build the engine, but having a problem where I'm continuously getting this error from ".\Setup.bat"
@west dune try this

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```

fleet dock Aug 4, 2020, 3:27 AM

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Hi all, I'd like to freely distribute an engine version to users of my app so that they can create mods for it. Is it legal to distribute via Github a fork of the engine with in my case not many changes to it for modders to use to build paks for my app from?

fresh coral Aug 4, 2020, 3:50 AM

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you can maintain your own fork on github, people who want to use it will need epic accounts that are linked to github just like any other UE developer

quick mica Aug 4, 2020, 5:28 AM

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@fleet dock you can checkout this: https://www.unrealengine.com/en-US/blog/new-example-project-and-plugin-for-mod-support-released

fleet dock Aug 4, 2020, 7:38 AM

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@quick mica thanks for the link. yes, i saw that. was going to implement some of it in my modding plugin setup. @fresh coral ok great, thanks for the confirmation

ornate fjord Aug 4, 2020, 9:26 AM

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anyone know what would be causing this or how to fix it? ```Assertion failed: EffectiveSize == (uint32)MipMap.BulkData.GetBulkDataSize() [File:C:/UE4.23-Source/UnrealEngine/Engine/Source/Runtime/Engine/Private/Texture2D.cpp] [Line: 1915]
Texture '/Engine/EngineResources/WhiteSquareTexture.WhiteSquareTexture', mip 1, has a BulkDataSize [512] that doesn't match calculated size [128]. Texture size 32x32, format 5

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this happens when starting a switch build after upgrading to 4.25

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I have not touched that texture in any way whatsoever

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I don't even know why it is packaged, it's not used in the game

ornate fjord Aug 4, 2020, 12:52 PM

#

does anyone know anything about this? I'm still stuck on this one error and no clue how to fix it

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nothing on any forum or documentation

woven quiver Aug 4, 2020, 1:25 PM

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@ornate fjord the error is clear the bulkdata is not matching the texture size anymore, I think they simple changed that texture when upgrade and your project is conflicting some how, it looks like a small corruption problem, first I will try to make a small clean up, remove the Saved and Intermediate folders of your project and check on project settings ->Packaging->Full Rebuild, also you can check what is the difference over the old WhiteSquareTexture. Also you cannot be 100% you are not using the reference, since UE has a very strong system, right click over the texture and open Reference Viewer, it will tell you if you truly have references to some asset in your project

ornate fjord Aug 4, 2020, 1:31 PM

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I checked the references all the way up, it's just in editor materials that we do not use

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I did a full rebuild and still had the same

#

I'm now trying to start the project directly from source build instead of from a binary version from our source build

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and I don't even know what bulkdata is

#

how could I fix that if it was corrupted?

woven quiver Aug 4, 2020, 2:26 PM

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@ornate fjord AFAIK the bulkdata is the raw data "editor only" to store the texture info , try to reimport that texture, does not matter if is engine stuff

ornate fjord Aug 4, 2020, 2:49 PM

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it worked when building directly with source version

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so I guess something must be corrupted in the binary version I created of the engine

dusky zinc Aug 4, 2020, 8:34 PM

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did 4.25.3 fixed the plugin compile issue? For whatever reason I'm just getting dumped with errors related to engine headers I don't even use

opaque lotus Aug 5, 2020, 3:26 AM

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Anyone know about tps files and where I could look in the source to see how they're treated?

frigid epoch Aug 5, 2020, 8:47 AM

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Anyone know where I can found the implementation of the PlayerCollision View mode in the viewport to make a custom Collision trace channel view mode?

frigid epoch Aug 5, 2020, 9:36 AM

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@opaque lotus Have you searched in Engine/Shaders ?

fresh coral Aug 5, 2020, 2:04 PM

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If you're talking about files like Engine\Binaries\ThirdParty\AppLocalDependencies\DirectXRedist.tps those are descriptors for third party software that epic ships with the engine, I don't believe there's anything the engine does with them at runtime but there's tooling for listing them

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it's about epic ensuring that everything they ship with the engine is properly licensed to be there, I don't think there's any external standard or anything they're using here I think it's an in-house thing they built

opaque lotus Aug 5, 2020, 4:49 PM

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@frigid epoch yeah, I had searched through the engine. Finally stumbled into what I think is the answer outside, one not in engine, I think they are used by gitdependencies when you run setup. Haven't read through it yet, but that's when associated files are populated

rain lake Aug 5, 2020, 9:57 PM

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i guess I'll crosspost my question here and see if anyone is on master branch and experimenting with 4.26 stuff

#

I'm fucking with ChaosVehicles in 4.26, but I'm getting a crash in it trying to access a Skeletal Mesh's FBodyInstance list (the list is empty). The Physics Asset has information regarding the BodyInstances

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so, my gut is telling me that something is up related to generating BodyInstances in 4.26, either because I haven't set up Chaos correctly or there is some porting of physx data to chaos that hasn't happened

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is anyone aware of any issues around there?

fading venture Aug 5, 2020, 10:07 PM

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Afternoon everyone! Has anyone used MemPro with ue4? I set following to enable llm asset tag tracking in every other build config except Shipping#define ALLOW_LOW_LEVEL_MEM_TRACKER_IN_TEST 1 and #define LLM_ALLOW_ASSETS_TAGS 1.
I took MemPro capture by passing following command line args to start capture from boot of the game
Game.exe -llm -nothreadtimeout -execcmds="MemPro.LLMTag *, MemPro.Enabled 1" In Mempro, most of the memory is untracked whereas, LLM report clearly has most of it tracked. MemPro uses ue4's LLM tracker to track memory. Does anyone know why there is such difference? Am I missing something?

📎 LLM.png

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📎 image_6.png

celest viper Aug 6, 2020, 2:36 AM

#

Random for here, but anybody have any luck or experience using a symbol store with their UE4 automated builds?

shrewd thorn Aug 6, 2020, 2:38 AM

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I did it like 3 years ago. It was irritating and I don't remember much of it

celest viper Aug 6, 2020, 2:44 AM

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perfect

shrewd thorn Aug 6, 2020, 3:08 AM

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If I remember correctly the windows "symbol store" is just a shared network drive, and the executable indexes it. But that might have changed

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PS4 symbols were far more irritating

formal flower Aug 6, 2020, 8:18 AM

#

Getting a bunch of NVaftermath errors trying to compile a merge of 4.25.3 into 4.25.1. Anyone else?

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I've never touched modules. Getting this error when trying to launch the engine.exe:
Fatal error: [File:B:/UnrealEngine/Engine/Source/Runtime/Core/Private/Modules/ModuleManager.cpp] [Line: 1013] Unable to read module manifest from '../../../Engine/Binaries/Win64/UE4Editor.modules'. Module manifests are generated at build time, and must be present to locate modules at runtime.

ornate fjord Aug 6, 2020, 8:38 AM

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I have a very strange issue, I pulled the source engine, added my console files that I got from the ftp, compiled everything the docs told me to compile, and then tried making a binary build of that source, but when I try to switch engine versions it's missing some xbox resource images, I added the manually, then I could switch, but then if I open the editor, the switch packaging icon is white, and when I try to package my game, it fails on startup on the switch

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on 4.25

normal saffron Aug 6, 2020, 9:16 AM

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Who has done HLOD?

little stump Aug 6, 2020, 2:40 PM

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Hi, In UE4 VertexFactory.h

What is the difference between bSupportsPositionOnly and bSupportsPrimitiveIdStream ??

Because IMPLEMENT_VERTEX_FACTORY_TYPE and IMPLEMENT_VERTEX_FACTORY_TYPE_EX are to be used based on the usage.

So primitiveId in the .usf would give me the Id and not in the other case?

unreal oar Aug 6, 2020, 7:54 PM

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I just cloned the master branch and am trying to build it now, it definetely does a lot but it's been over two hours now since I started the build and it says 1016/4140 climbing at relatively constant rate... Could it be because I cloned onto an HDD instead of a SSD?

stable hemlock Aug 6, 2020, 8:58 PM

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@unreal oar I posted a note in here on the clone and build process a little bit ago on 8/3/2020. it might help if you try building that way. if using 4.25.3 make sure to use vs 2019

unreal oar Aug 6, 2020, 10:29 PM

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Hmm, is the UnrealEngine folder supposed to grow to 80 GB?

spiral mortar Aug 6, 2020, 10:34 PM

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yup

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Or more

unreal oar Aug 6, 2020, 10:51 PM

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Oof

#

I thought I could make performance better by moving it to my second SSD... What a fool I am ^^

spiral mortar Aug 6, 2020, 10:55 PM

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Compiling on a SSD will be much faster 🙂

dusty inlet Aug 6, 2020, 11:30 PM

#

Hey

#

What is the empty RHI ?

#

https://github.com/EpicGames/UnrealEngine/tree/release/Engine/Source/Runtime/EmptyRHI

spiral mortar Aug 6, 2020, 11:37 PM

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Literally just that I think

#

an empty impl of the interface

dusty inlet Aug 6, 2020, 11:37 PM

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But why?

spiral mortar Aug 6, 2020, 11:37 PM

#

that's always useful

lapis bloom Aug 7, 2020, 12:12 AM

#

hey all, I am starting to learn how to use a source-built engine. I understand the potential of things you can do by being able to modify anything in the engine is tremendous... but so far I haven't felt the actual need (except for creating a dedicated server build)

#

I am failing to visualize awesome things that could be done with a source build, so my question is, could anyone show an example of something useful that they achieved by modifying the source?

#

(not necessarily showing how, I just want some context of how useful it can be)

stable hemlock Aug 7, 2020, 1:32 AM

#

@lapis bloom one benefit i found is that by using batch scripts, you can fully automate getting the latest version and auto compiling and packaging your game ded server if it's on linux / win64 client. this auto git clone download and compilation is not possible with the unreal launcher.

this is not an actual modification though just wanted to share this.

unreal oar Aug 7, 2020, 3:08 PM

#

Halleluja, UE starts. Only took like what, 6 hours to builld

rancid zephyr Aug 7, 2020, 6:15 PM

#

they changed object.h?

#

📎 unknown.png

#

I am not that good in c++ and the plugin dont compile

half talon Aug 7, 2020, 7:16 PM

#

Took a look at all the RenderThread cvars and compiled a list of useful performance related commands:

r.CreateShadersOnLoad=1 ;; uses more memory but reduces in-game hitches
r.VirtualTextureReducedMemory=1 ;; packs virtual texture memory together
r.DBuffer=0 ;; use if no decals to remove overheard
r.DFShadowQuality=1 ;; low quality distance field shadows

;; remove static lighting overhead if you are only using dynamic lighting. 
AllowStreamingLightmaps=False
r.AllowStaticLighting=0

;; everything from this point needs lots of testing
r.OcclusionCullParallelPrimFetch=1
;;r.UseParallelGetDynamicMeshElementsTasks=1 ;; curious how this would work with the cvar below
;;r.DeferSkeletalDynamicDataUpdateUntilGDME=1 ;; defer until GetDynamicMeshElements gets called
;;r.AOMaxObjectBoundingRadius=25000 ;; Half default size
;;r.ParallelShadowsNonWholeScene=1 ;; Toggles parallel shadow rendering for non whole-scene shadows. 
;;r.DFFullResolution=0 ;; half DFFullResolution
;;r.DoLazyStaticMeshUpdate=1 ;; Don't add static meshes to draw list if they aren't visible 
;;r.FinishCurrentFrame=1 ;; If on, the current frame will be forced to finish and render to the screen instead of being buffered.  This will improve latency, but slow down overall performance.
;;r.SkinCache.CompileShaders=1 ;; Tested on Windows only.
;;r.UseClusteredDeferredShading=1 ;; No idea what this is.

#


;; allows async compute SSAO (1ms saving on available platforms)
;;r.EarlyZPass=2
;;r.EarlyZPassMovable=1
;;r.EarlyZPassOnlyMaterialMasking=1
;;r.DoInitViewsLightingAfterPrepass=1 ;; might cause race condition



;; OpenGL PC RHI is deprecated, but still useful.
;;r.OpenGL.AllowRHIThread=1 ;; OpenGL RHI thread, untested.

;;r.Shadow.WholeSceneShadowUnbuiltInteractionThreshold=250 ;; default 500, lowered for potential shadow caching?

// for fun 
;;r.DistanceFieldGI=1 ;; :O distance field GI, untested
;;r.VPLMeshGlobalIllumination=1 ;; needed for distance field GI
;;AllowAsyncRenderThreadUpdatesEditor=1 ;; untested with editor

// Vulkan latency improvements?
;;r.Vulkan.SubmitAfterEveryEndRenderPass=1
;;r.Vulkan.SubmitOnDispatch=1

unreal oar Aug 7, 2020, 8:34 PM

#

Oh no will it take me another 6 hours to recompile after just one line of code added?

fresh coral Aug 7, 2020, 9:14 PM

#

depends on where you added the code

#

but it won't just arbitrarily recompile everything, just the things that need to be recompiled

unreal oar Aug 7, 2020, 9:33 PM

#

Okay, I think I need to select "rebuild" and not "build"

#

Haven't worked with VS in a while let alone a project of a size where it matters at all

spiral mortar Aug 7, 2020, 9:37 PM

#

don't ever select rebuild

#

it'll take forever 😄

fresh coral Aug 7, 2020, 9:38 PM

#

rebuild will do what it says and rebuild everything, that is what you don't want

#

you want build

unreal oar Aug 7, 2020, 9:39 PM

#

ノಠ益ಠノ彡┻━┻

#

Maybe I have to make room on my main SSD for Unreal then...

fresh coral Aug 7, 2020, 9:40 PM

#

compiling is many times faster on an SSD than an HDD

#

you'll also want as powerful of a CPU as possible, with as many cores as possible, and at least 16gb of ram

unreal oar Aug 7, 2020, 9:43 PM

#

I got an i5 8400, 16 GB RAM

gloomy hamlet Aug 7, 2020, 10:00 PM

#

Rebuild gets removed from all the menus, first task when configuring VS. Too many misclicks...

unreal oar Aug 7, 2020, 10:05 PM

#

I'm so proud of myself that I figured out how to remove it from the context menu on my own

unreal oar Aug 8, 2020, 12:51 AM

#

And it now just took 2h for a complete build

#

Basically nothing