#engine-source | Unreal Source | Page 28

shut solstice Jan 31, 2019, 8:05 PM

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but, there is no VT for this year, is it?

brisk silo Jan 31, 2019, 8:11 PM

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well, its too early to comment

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i think epic will go ham on VT and GPU lightmass once raytracing and the new renderer are working

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VT actually helps them in fortnite

shut solstice Jan 31, 2019, 8:13 PM

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is lightmass still alive? idk

brisk silo Jan 31, 2019, 8:13 PM

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wel... paragon is ded

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and fortnite is all dynamic light

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the only project where they use lightmass is for robo recall "lite: that they gonna put in oculus Quest

shut solstice Jan 31, 2019, 8:17 PM

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Epic doesn't care GPU lightmass, they have enough CPU power for themselves games.

brisk silo Jan 31, 2019, 8:40 PM

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they hired the gpu lightmass guy

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and gpu lightmass is not only faster

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its significantly higher quality

shut solstice Jan 31, 2019, 9:01 PM

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really? I am happy to hear this. I am starting to like using discord. very informative! thanks @brisk silo

low dust Jan 31, 2019, 9:52 PM

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this happened a while ago

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they also hired the ex Maxwell renderers team lead (or whatever his title was)

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@shut solstice

shut solstice Feb 1, 2019, 12:04 AM

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I show my respects for Juan Canada and @low dust.

granite dust Feb 1, 2019, 6:39 PM

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Master branch just bumped to 4.23

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Looks like the first 4.22 previews will probably come out this month

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Or maybe they'll wait until GDC

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dev-rendering finally merges into master two days ago

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Maybe we'll see a 4.22 branch pop up next week

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Maybe that's the purpose of the "promoted" branch

elder falcon Feb 1, 2019, 7:02 PM

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I think they said somewhere that promoted is just a version of master where they've made sure it compiles and passes basic testing

brisk silo Feb 1, 2019, 7:49 PM

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@granite dust 2 days ago it had all the new mesh code

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and its when denoised RTAO and RTshadows were live

granite dust Feb 1, 2019, 8:32 PM

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<It'sHappening.gif>

low dust Feb 2, 2019, 1:41 AM

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https://github.com/EpicGames/UnrealEngine/tree/4.22

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and yes, it contains that dev-rendering merge from 2 days ago

granite dust Feb 2, 2019, 1:44 AM

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I'm cloning now 😃

low dust Feb 2, 2019, 1:45 AM

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I already fetched the changes

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will see what gameworks things move over without too much pain

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I don't have RTX hw yet so can't test the new rendering stuff

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📎 unknown.png

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5 GB of dependencies now 😄

elder falcon Feb 2, 2019, 1:49 AM

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https://cdn.discordapp.com/attachments/394910428141977614/540895765346779137/unknown.png

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an insane amount of changes

swift ivy Feb 2, 2019, 2:12 AM

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6 million insertions, did they add two more copies of boost? 😄

low dust Feb 2, 2019, 3:31 AM

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when you prune your ue4 clone and it's stuck on 98% forever....

📎 unknown.png

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now at 99%

📎 unknown.png

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seems like I might just make it without starting to swap

elder falcon Feb 2, 2019, 4:27 AM

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actually

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yes

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someone added another copy of boost

brisk silo Feb 2, 2019, 8:07 AM

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well, they are still at heavy dev in dev-rendering

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so i dunno

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📎 unknown.png

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dev-render is now 23

dense wharf Feb 2, 2019, 10:12 AM

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Hi, my 4.21.1 source engine keeps crashing when I load certain assets, not sure why. Here's the error:

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📎 ue4crash.PNG

dusky zinc Feb 2, 2019, 2:47 PM

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I'm having a really big issue with compiling the engine constantly crashing windows insider preview. The errors that I keep seeing is that it can't find the correct .net files in the temp folder and I also noticed that the .suo that is generated when running generate project files is the visual studio 15 version. How can I change the visual studio version if I can't run the engine yet? where would I set that in source files?

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@dense wharf same dude

spiral mortar Feb 2, 2019, 2:52 PM

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windows insider preview 👀

dusky zinc Feb 2, 2019, 2:53 PM

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@spiral mortar i would take it all back if I could

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but I can't roll back and I can't reinstall at this moment

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the preview is awful and the only thing I wanted from it was a system wide dark mode to save my eyes

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the nightmare will be over when I build my new pc

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in the mean time I just need to sort out this engine issue

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I can't seem to find which config file in the engine sets the visual studio version

spiral mortar Feb 2, 2019, 3:10 PM

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It's in UBT @dusky zinc

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You want to change the compiler version?

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There's

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📎 unknown.png

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in your BuildConfiguration.xml

thick storm Feb 2, 2019, 3:30 PM

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and python

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last merge with python was over 1.2mln lines -;-

hollow plinth Feb 2, 2019, 4:09 PM

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Its probably python source

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I just added tar.gz with python source to my engine

granite dust Feb 2, 2019, 6:33 PM

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Compiled 4.22 and updated SculptrVR to work on it.

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Instanced stereo crashes, but it runs without

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Cascading shadow maps don't work

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Tonemapping seems to be different

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VR Preview window is upside down

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Lots broken, but updating was surprisingly straightforward

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Only took about 30 minutes if fixing deprecated calls, etc

dense wharf Feb 2, 2019, 7:29 PM

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Turns out its my main project thats crashing, I dont think its the engine's fault. I dont know why I'm getting that crash however. If anyone has suggestions, please let me know. If not, then I'll just make a new project and migrate

brisk silo Feb 2, 2019, 9:31 PM

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@granite dust does it do the autoinstancing on vr?

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havent tried it

granite dust Feb 2, 2019, 9:35 PM

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It crashed on start if I leave instanced stereo on

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I don't know if it was auto instancing otherwise, though

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I didn't get a chance to profile

bold hare Feb 4, 2019, 12:41 PM

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How to make sure my shaders usf can be successfully compiled for GLSL_ES2?

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Right now, they not compiled, and i don't see any errors, except when trying to launch the game i get:
"Ensure cooked successfully"

terse dragon Feb 5, 2019, 6:45 PM

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anyone got a link to the 80.lv leaked roadmap? I can't find it anymore.. wondering if they took it down

granite dust Feb 5, 2019, 7:51 PM

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K the recent update fixed instanced stereo. It does not crash now

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also cascading shadow maps is a complicated issue. Apparently they work if AO is off or there's at least one active point light in the scene

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VR preview window is still flipped upside down, though

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I think I'm going to try to fix this cascading shadow maps bug myself, since I doubt many other are going to encounter the issue

brisk silo Feb 5, 2019, 8:21 PM

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i want to see that roadmap again too

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read what they were commenting about the mesh renderer which is now live

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@granite dust how is perf in your game

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tho you dont use that autoinstancing stuff

granite dust Feb 5, 2019, 8:38 PM

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I will find out after lunch!

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It's really hard to perf test on my laptop at home because clock rates are so dynamic

granite dust Feb 6, 2019, 1:45 AM

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Well in its current state my 4.22 build has significantly slower rendering than 4.21 has

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Like 50% longer render time with the same scene

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I didn't measure it exactly, though

pale smelt Feb 6, 2019, 8:54 AM

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so right now im committed to the 4.14 engine for my game, because i dont want to change anything close to release that might cause me extra work as epic add new features and change things on each release. this being the case, if i want to apply patches, is it worth me working with a source code build, and manually applying patches to it?

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basically backporting fixes for stuff from the newer versions?

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(i'd only want the fixes and only those that directly affect me, not new features)

elder falcon Feb 6, 2019, 10:17 AM

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wtf is ROBOMERGE

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oh this is weird

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look at these commits for example

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https://github.com/EpicGames/UnrealEngine/commit/12c8e1c04108ba6d2f25dee323c8f381df6b1376
https://github.com/EpicGames/UnrealEngine/commit/d6acd404df8286757c207e53887244503c34ddc4
https://github.com/EpicGames/UnrealEngine/commit/8576b6304d37c333935f18030544ddf639948ccc
https://github.com/EpicGames/UnrealEngine/commit/b6b580db72d75bdab1b73ea78bf65ca8d90012b4

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they have no connection at all in git

low dust Feb 6, 2019, 11:33 AM

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going through NvPhysX fork's github issues

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someone wrote hi, i hope if someone can help me to merge VolumetricLighting, HBAO+ and VXGI2 in unreal.. i downloaded all of them and they are working fine but i didn't know they'd be separated engines..! plus the size is big on each.. so please tell me how can i merge them (without coding) for version 4.19 or 4.20.. thanks.

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if you know how to merge these without coding, do tell me as well kappa

summer pelican Feb 6, 2019, 12:15 PM

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@elder falcon Robomerge is just a tool that monitors commits and merges them to other branches. Some of them are automatic, some of them are manually triggered by a #robomerge tag in the commit message

weary star Feb 6, 2019, 5:18 PM

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How do I add the unreal studio plugins to a source build?

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google hasn't helped

astral sapphire Feb 6, 2019, 5:30 PM

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what is dev-core branch?

limber jacinth Feb 6, 2019, 5:31 PM

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the core of the UE4 Engine

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dev-editor is the editor, dev-networking is the networking side, etc

astral sapphire Feb 6, 2019, 5:32 PM

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and master is amalgamation of all?

limber jacinth Feb 6, 2019, 5:33 PM

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yeah

astral sapphire Feb 6, 2019, 5:34 PM

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ok, i just wanted to have one bleeding edge branch and i was not sure if i should switch from master

limber jacinth Feb 6, 2019, 5:35 PM

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4.22 or master

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is what you want

weary star Feb 6, 2019, 5:35 PM

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for my question, googling "datasmith UE4 source build" helped. They need to have a better way to deal with marketplace plugins and source builds

astral sapphire Feb 6, 2019, 5:36 PM

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@limber jacinth nah...i don't want to switch from branch to branch later when 4.23 emerge...master is consistent in updates

limber jacinth Feb 6, 2019, 5:40 PM

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thats up to youi

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but i avoid keep switching brances for a production game

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just more hassle and errors

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or at least updating

astral sapphire Feb 6, 2019, 5:40 PM

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@limber jacinth ahahah...i'm not that dare to build a game on master

limber jacinth Feb 6, 2019, 5:40 PM

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our game is still on 4.18.3 😄

astral sapphire Feb 6, 2019, 5:41 PM

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i'm just testing some things on it, to make sure they are still relevant

thick storm Feb 6, 2019, 8:39 PM

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I tried to enforce opposite direction

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we sitch to latest version ASAP

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switch*

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it's far easier to keep it updated in case you need new features or particular fix

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than trying to pick individual CLs

stable hemlock Feb 7, 2019, 11:15 AM

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I added a bit of code on BodyInstance file.
But something weird is happening.
Any errors I introduce inside any function aren't being detected by the compiler. But anything done wrong outside of a function is detected.
Any idea what might be the problem?

limber jacinth Feb 7, 2019, 11:59 AM

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how can i force source build to use a local cache

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over a shared cache?

astral sapphire Feb 7, 2019, 12:07 PM

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Is anyone here using incredibuild?

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@limber jacinth DDC?
If you compiled the engine from GitHub source then just create an environment variable UE-LocalDataCachePath and set the path as it's value. Keep in mind, that in this case it will change the DDC directory for all compiled versions of the engine you have. This should work - I tested it.

limber jacinth Feb 7, 2019, 12:14 PM

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ok

astral sapphire Feb 7, 2019, 3:54 PM

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Can anyone help me on ue4 build config?

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i need to replace cl.exe path

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with msbuild it's done like that:
msbuild.exe /p:CLToolExe=cl_blah.exe /p:CLToolPath=somepath

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afaik UBT uses msbuild anyway, but i can't find where it's set

spiral mortar Feb 7, 2019, 4:33 PM

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@astral sapphire Doesn't seem to

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You want to change the cl path? 🤔

astral sapphire Feb 7, 2019, 4:34 PM

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📎 screenshot.1549557254.png

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yes, i want to replace cl.exe to clcache

spiral mortar Feb 7, 2019, 4:35 PM

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🤔

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What for?

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incredibuild?

astral sapphire Feb 7, 2019, 4:35 PM

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for cache

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incredibuild doesn't work for me

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it only uses 8 cores

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seems limitation of free version

spiral mortar Feb 7, 2019, 4:36 PM

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Where is clcache?

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What does it do?

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Uh doesn't seem to be useful with UE?

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What are you really trying to do 🤔

astral sapphire Feb 7, 2019, 4:37 PM

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use build caching

spiral mortar Feb 7, 2019, 4:38 PM

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That already works?

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No need for custom stuff

astral sapphire Feb 7, 2019, 4:38 PM

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like xge suppose to do

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it doesn't

spiral mortar Feb 7, 2019, 4:39 PM

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What doesn't work exactly

astral sapphire Feb 7, 2019, 4:40 PM

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caching

spiral mortar Feb 7, 2019, 4:40 PM

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I mean

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Give me an example

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You edit a file, rebuilds the entire module?

astral sapphire Feb 7, 2019, 4:40 PM

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yes

spiral mortar Feb 7, 2019, 4:40 PM

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That's because of unity build

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All the files are merged into a single cpp

astral sapphire Feb 7, 2019, 4:41 PM

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huh?

spiral mortar Feb 7, 2019, 4:41 PM

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Compiles faster (each include is included only once)

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Or more precisely

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Recompiles faster

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Downside is obviously that everything is rebuilt every time

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Add bFasterWithoutUnity = true in your build.cs

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You'll see

astral sapphire Feb 7, 2019, 4:44 PM

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where to exactly? i'm building ue4 editor

spiral mortar Feb 7, 2019, 4:45 PM

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Oh

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Errr

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It'll be a shitton slower to build the first time then

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What are you editing?

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Using a git repo for the source?

astral sapphire Feb 7, 2019, 4:46 PM

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i only care about rebuilding...im on master and i'm rebuilding engine twice a week

spiral mortar Feb 7, 2019, 4:46 PM

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Ah lol

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I see

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Not sure it'll help then

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As most stuff changes anyways

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So no black magic will help you there

astral sapphire Feb 7, 2019, 4:47 PM

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meh

spiral mortar Feb 7, 2019, 4:47 PM

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¯_(ツ)_/¯

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Why being on master?

astral sapphire Feb 7, 2019, 5:25 PM

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@spiral mortar i'm testing if my tweaks still working on latest changes

dapper rapids Feb 7, 2019, 6:38 PM

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https://wiki.unrealengine.com/Dedicated_Server_Guide_(Windows_%26_Linux)#3._Video_guide
I'm trying to build a dedicated server following the above tutorial. I'm running into issues with building the server (about mid way down the doc, point 5)

Dedicated_Server_Guide_(Windows_%26_Linux)

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getting this error.

📎 unknown.png

fickle yew Feb 7, 2019, 9:36 PM

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@dapper rapids What's unclear about that error?

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That plugin is referenced in your project, install it or edit your project opening file and remove the part about the plugin

dapper rapids Feb 7, 2019, 9:42 PM

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I need the plugin and since I'm building it for the dedicated server there is no source version available for the plugin

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What should I do in this instance?

astral sapphire Feb 7, 2019, 9:49 PM

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@spiral mortar i did it!

📎 screenshot.1549576178.png

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Just modified Engine\Build\BatchFiles\MSBuild.bat

granite dust Feb 7, 2019, 11:00 PM

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Ok 4.22 perf issues are getting resolved rapidly

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I think my perf is better than 4.21 now, but I'm packaging a test case now

hidden hedge Feb 7, 2019, 11:06 PM

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@dapper rapids well obtaining the source is probably your only option to build it

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https://www.unrealengine.com/marketplace/low-entry-extended-standard-library

LE Extended Standard Library by Low Entry in Code Plugins - UE4 Ma...

This plugin provides you with blueprints that add general functionality and improvements.

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is it this?

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the source code is available for it

granite dust Feb 7, 2019, 11:36 PM

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Nope. The render thread time on 4.22 seems to be about 10% larger than 4.21 still. Much better than the original 50% I was seeing!

hidden hedge Feb 7, 2019, 11:43 PM

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you should see the 2ms+ hit that per-object shadows took in 4.21

granite dust Feb 7, 2019, 11:44 PM

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I still believe. Once 4.22 is out it might be faster..

hidden hedge Feb 7, 2019, 11:45 PM

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yeah in 4.22 D3D11 uses an RHI thread

limber jacinth Feb 8, 2019, 2:32 AM

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how can i make -ddc=noshared always be added when loading the editor

hidden hedge Feb 8, 2019, 2:34 AM

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make a batch file or shortcut

limber jacinth Feb 8, 2019, 2:34 AM

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so its not possible even when i launch from inside VS?

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must be a way to do it

hollow plinth Feb 8, 2019, 9:05 AM

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Just disable shared ddc in defaultengine.ini

limber jacinth Feb 8, 2019, 9:07 AM

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i did that but it was still complaining

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i solved it now anyway 😄

stable hemlock Feb 8, 2019, 11:30 AM

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Trying to add conversion functions as in PhysXSupport.cpp.
Declared my functions with the ENGINE_API macro, header is included where needed, no Intellisense error. However, I always get linker error saying unresolved external symbol...
Any idea of what I might be missing?

astral sapphire Feb 8, 2019, 1:14 PM

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what cl-filter.exe does?

chilly swift Feb 8, 2019, 2:13 PM

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Can anyone tell me if the visual studio code SourceCodeAccessor can open code when clicking in the reletive spots in the engine?

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Like in FirstPersonCharacter blueprint and up at the top right it has Parent Class: FirstPersonCharacter, but clicking on it doesn't open the correct file like it does for Clion

limber jacinth Feb 8, 2019, 2:40 PM

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Clion is broken, it doesnt even debug properly, and ive never used VSCode with UE4

chilly swift Feb 8, 2019, 2:43 PM

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you mean CLion the app or the plugin is broke?

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CLion is ssssssllllllloooooowwwwww, its big heavy laggy its ui is laggy, intellesense is laggy, and I can't believe people pay money for that piss poor performance, and all this because its built on java.

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visual studio code does everything that clion does, minus the c++ refactoring tools and opening source/header files under UnrealEngines source tree via inside the editor its self, but faster, way way faster.

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Yeah, looking in the code, I don't think they coded in an ability to open the source from UE4 its self, only the project.

limber jacinth Feb 8, 2019, 4:10 PM

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that sucks

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VS is fine for me, i know its a bit bulky but it works

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shame VSCode is lacking on stuff. I mean they dont need to make it bloated but there are some useful things its missing

chilly swift Feb 8, 2019, 5:18 PM

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Yeah.

cosmic stump Feb 9, 2019, 2:21 AM

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when solution is opened in MSVC, there is project, then platform and then drop down with Blank Program, etc. What is that one for ?

limber jacinth Feb 9, 2019, 3:57 AM

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just a blank program

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😄

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that is it, nothing more

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its like a base

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for a program that does stuff with/for/to the engine

astral sapphire Feb 9, 2019, 10:12 AM

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How to exclude modules from ue4editor build?

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i should say "plugins"

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there're .uplugin files, that list the modules, but i can't find where are list of those defined

astral sapphire Feb 9, 2019, 11:07 AM

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I assume it just parses all the subfolders in the plugins folder?

red dust Feb 9, 2019, 12:14 PM

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is there anyway to change the priority on the shader compiler? some reason its compiling all my materials below average and wont let me change it in the task manager

quick crystal Feb 9, 2019, 11:22 PM

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Has anyone had an issue where they can't launch their game via the .uproject?

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I don't know that I have ever gotten it to work for my project. When I switch the uproject ue4 version to the prebuilt one, then the uproject launching works

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when I switch back to the engine source code compiled one, it stops working and complains about a missing modules manifest

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no idea what a modules manifest is... I haven't modified the engine source code at all

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I've tried rebuilding the UE4 sln, regenerating the uproject's visual studio project files, now I am doing a complete rebuild of the game project's sln. I have no confidence that this will make a darn bit of difference

hollow plinth Feb 9, 2019, 11:30 PM

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did you recompile your project after setting it to custom engine?

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modules manifest is probably .modules file in binaries folder in your project binary folder

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i suppose it shall be result of UBT => shall be done during compilation

quick crystal Feb 9, 2019, 11:38 PM

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I can't remember what all I have tried because I've mainly been ignoring it until now. It's finally starting to get in the way so I want to fix it. I just rebuilt the UE4 sln and I am almost done rebuilding the game project's sln

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I'll report back in a few once that it done and let you know if it fixed it

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I know that I started off with using the pre-compiled edtior

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then I right clicked the uproject and pointed it to the custom build and that forced a new build prior to launching the editor. This was a couple of months ago though

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no go

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same error

hollow plinth Feb 9, 2019, 11:50 PM

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is compilation suuccessful?

quick crystal Feb 9, 2019, 11:50 PM

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📎 unknown.png

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Yeah

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and I can launch the editor by using Visual Studio

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and then running as debug

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I'm running under the Debug Editor / Win64 config

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would that impact the ability to run the game via the .uproject?

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To clarify, when I say "run the game from the .uproject", I mean I right-click on the .uproject file and then click "Launch Game"

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Googling that error gave me nothing useful. Google can't even match more than one result for the test "Module manifests are generated at build time"

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the rest of the results don't have that text in them

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Which of course the one search result has nothing to do with my current setup

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<

hollow plinth Feb 9, 2019, 11:55 PM

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try development mode for both editor and project

quick crystal Feb 9, 2019, 11:55 PM

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Ok

astral sapphire Feb 10, 2019, 8:49 AM

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void IMeshPaintEdMode::OnVRAction( class FEditorViewportClient& ViewportClient, UViewportInteractor* Interactor, 
    const FViewportActionKeyInput& Action, bool& bOutIsInputCaptured, bool& bWasHandled )

is that a proper use of a class reference?
all the code above is using FEditorViewportClient* ViewportClient

astral sapphire Feb 10, 2019, 9:23 AM

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    virtual bool ProcessCapturedMouseMoves(FEditorViewportClient* InViewportClient, FViewport* InViewport, const TArrayView<FIntPoint>& CapturedMouseMoves) override;
    virtual bool StartTracking(FEditorViewportClient* InViewportClient, FViewport* InViewport) override { return true; }
    virtual bool EndTracking(FEditorViewportClient* InViewportClient, FViewport* InViewport) override;
    virtual bool InputKey( FEditorViewportClient* InViewportClient, FViewport* InViewport, FKey InKey, EInputEvent InEvent ) override;

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code from \Engine\Source\Editor\MeshPaint\Private\IMeshPaintMode.cpp (.h)

cosmic rampart Feb 10, 2019, 11:18 AM

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hi guys is there a fix or workaround for this problem yet ? https://answers.unrealengine.com/questions/214541/motion-blur-artifacts-on-apex-cloth.html

astral sapphire Feb 10, 2019, 11:39 AM

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@cosmic rampart it says pushed to 4.10...still bugged?

cosmic rampart Feb 10, 2019, 11:42 AM

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@astral sapphire yes, as far as i have tracked this because i started back in 4.13 and it worked back then, but i think it was reintroduced in 4.19 or something. I have not checked this in later version yet because we dont plan to upgrade anytime soon. you can check this thread where i also posted https://forums.unrealengine.com/unreal-engine/feedback-for-epic/1456417-4-19-something-wrong-with-cloth

Unreal Engine Forums

i just installed 4.19 & my players hair cloth is all blurry. anyone else having this problem? or is it just me??

astral sapphire Feb 10, 2019, 11:43 AM

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yeah, iirc they made total overhaul of shaders back then

cosmic rampart Feb 10, 2019, 11:44 AM

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yeah, could be the cause, i just would like a fix 😄 blurry capes suck...

astral sapphire Feb 10, 2019, 12:49 PM

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@cosmic rampart Apex cloth is different from default ue4 cloth?

cosmic rampart Feb 10, 2019, 12:50 PM

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mh, i have only used the built in cloth. i did not try it with imported apex.

astral sapphire Feb 10, 2019, 12:51 PM

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APEX (Legacy) Assets

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@cosmic rampart ok, so it's default one

cosmic rampart Feb 10, 2019, 12:53 PM

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yea the one you can paint inside the skeletal mesh editor

astral sapphire Feb 10, 2019, 12:53 PM

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i need to make a scene just for testing the shader -_-

cosmic rampart Feb 10, 2019, 12:54 PM

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😃 thx for looking into this !

astral sapphire Feb 10, 2019, 1:00 PM

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@cosmic rampart can you show the screenshot of the issue, so i could verify it exist on my machine?

cosmic rampart Feb 10, 2019, 1:02 PM

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📎 unknown.png

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character cape blurred extremely strong

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on the shoulders where the skin wheight is 1 there is no extreme blur

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the camera is moving with the character so there should be nearly no blur at all

astral sapphire Feb 10, 2019, 1:30 PM

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@cosmic rampart i can't reproduce this on my end -_-

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📎 screenshot.1549805413.png

cosmic rampart Feb 10, 2019, 1:31 PM

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what version are you on?

astral sapphire Feb 10, 2019, 1:31 PM

#

4.21

#

i can test on 4.19 (lowest i have)

cosmic rampart Feb 10, 2019, 1:32 PM

#

that is where i have the problem, mh well i will upgrade and just test if it is fixed for me there too.

astral sapphire Feb 10, 2019, 1:33 PM

#

ok, i'll test on 4.19

cosmic rampart Feb 10, 2019, 1:33 PM

#

that would be nice 😃

#

i just hope it is nothing just on my end...

astral sapphire Feb 10, 2019, 1:34 PM

#

@cosmic rampart well, you may open the content examples cloth map and test it on infiltrator

cosmic rampart Feb 10, 2019, 1:34 PM

#

i will do that

#

📎 unknown.png

#

mhh well for me it is happening. shaders still compiling xD

#

this is 4.19

#

downloading 4.21 now

#

maybe it is a simple fix i can merge down

astral sapphire Feb 10, 2019, 1:44 PM

#

yeah, it exist

#

on 4.19

cosmic rampart Feb 10, 2019, 1:45 PM

#

good so that is confirmed then

astral sapphire Feb 10, 2019, 1:46 PM

#

📎 screenshot.1549806354.png

cosmic rampart Feb 10, 2019, 1:46 PM

#

so now i need to find the needle in the haystack xD

astral sapphire Feb 10, 2019, 1:58 PM

#

@cosmic rampart if you want to stay on 4.19, probably those 2 functions in GpuSkinVertexFactory.ush may solve the issue:

float3 GetClothSimulNormal(int Index, bool bPrevious)```

cosmic rampart Feb 10, 2019, 1:59 PM

#

alright thank you so much for the help! 😃

astral sapphire Feb 10, 2019, 2:01 PM

#

you may backup the ush in the 4.19, copy those 2 from 4.21 and then hit Ctrl+Shift+. to recompile the shaders
r.ShaderDevelopmentMode in ConsoleVariables.ini probably should be set to 1

cosmic rampart Feb 10, 2019, 2:02 PM

#

i will try this. i let you know if it worked! 😃

astral sapphire Feb 10, 2019, 2:14 PM

#

don't forget to add float4x4 PreviousClothLocalToWorld; on the top

#

i've tried and now have to wait till 5000+ shaders will compile

#

well...that was bad idea

#

i completely ignored the fact PreviousClothLocalToWorld never been modified...in any shader

#

yeah, it's in \Engine\Source\Runtime\Engine\Private\GPUSkinVertexFactory.cpp

cosmic rampart Feb 10, 2019, 3:28 PM

#

alright i keep that in mind 😃

astral sapphire Feb 10, 2019, 3:39 PM

#

@cosmic rampart yeah, unfortunately not possible to make it work on 4.19 w/o recompilation

cosmic rampart Feb 10, 2019, 3:42 PM

#

well that is not such a big issue, as long as it is fixable that way for now

mystic star Feb 10, 2019, 4:18 PM

#

Does anyone know if the prebuilt binaries from the launcher built with any special settings? Doing some experiments with size, but with a clean release-branch build my binaries come out just slightly larger than the prebuilt ones, trying to figure out why.

spiral mortar Feb 10, 2019, 5:13 PM

#

@mystic star binary build right, not source build?

mystic star Feb 10, 2019, 6:35 PM

#

@spiral mortar I might be getting the terms wrong, but I tried it this way: Building the engine from source, with shipping win32 as target, the built default UE4Game-Win32-Shipping.exe in my Engine/Binarie/Win32 is 202 KB larger than the corresponding one in my launcher-installed version. That size difference is also present later when doing a full rebuild/package on identical empty projects, though a tad smaller

spiral mortar Feb 10, 2019, 6:58 PM

#

@mystic star You're using VS to build the engine?

mystic star Feb 10, 2019, 7:02 PM

#

@spiral mortar yeah

spiral mortar Feb 10, 2019, 7:02 PM

#

The launcher build are binary builds and not source builds

#

"./Engine/Build/BatchFiles/RunUAT.bat" BuildGraph -target="Make Installed Build Win64" -script=Engine/Build/InstalledEngineBuild.xml -set:WithDDC=false -set:SignExecutables=false -set:EnableSymStore=false -set:HostPlatformOnly=true

#

It's built using smthg like that

#

Also why it's only ~30GB instead of the 70GB of a source build

mystic star Feb 10, 2019, 7:07 PM

#

Aight, thanks, I'll look into those parameters then. To be clear I'm just looking to generate the same sized game executables as the launcher version

spiral mortar Feb 10, 2019, 7:07 PM

#

I see

#

Not sure it'll help then

mystic star Feb 10, 2019, 7:08 PM

#

It's only a difference of 150-200 KB, but when optimizing for mobile sizes I was hoping to get rid of that difference, or at least get an idea of why it's there

pliant pagoda Feb 10, 2019, 8:17 PM

#

Damn it

#

I cannot get 4.22 project files generated

#

it says that no visual c++ 2015 installation was found, but I have it installed with all c++ tools

spiral mortar Feb 10, 2019, 8:18 PM

#

Use VS 2017

pliant pagoda Feb 10, 2019, 8:18 PM

#

Can't I use 2015?

#

Is it not supported anymore?

spiral mortar Feb 10, 2019, 8:19 PM

#

Indeed

#

It was dropped in 4.20

pliant pagoda Feb 10, 2019, 8:19 PM

#

Wow

spiral mortar Feb 10, 2019, 8:19 PM

#

2015 was still working but not recommended

#

So I'm not surprised if it doesn't work in 4.22

pliant pagoda Feb 10, 2019, 8:19 PM

#

I haven't compiled engine from source for a while, I guess I am not up-to-date

#

alright then, time to switch, thanks 😉

astral star Feb 11, 2019, 2:14 AM

#

Does anyone know how to compile the engine from source in the most efficient manner on a completely average computer? (I think it was estimated to be 20 hours long in total 😬) All of the support topics online are about compiling game code, not compiling the actual engine. I am using Windows 10 with an AMD A10 processor and 7.5GB of RAM. Thanks in advance.

spiral mortar Feb 11, 2019, 2:19 AM

#

@astral star what's your exact CPU

#

Should take around an hour

astral star Feb 11, 2019, 2:19 AM

#

AMD A10-9600P

#

Visual Studio was compiling around 2314 items and took around 20-30 seconds on each

#

I left my computer on for around an hour and a half and it wasn't even a quarter through

spiral mortar Feb 11, 2019, 2:21 AM

#

Ok so I'd say 3 to 4 hours with your CPU

#

Do you have a HDD or a SSD?

astral star Feb 11, 2019, 2:22 AM

#

I have an HDD

#

2TB

spiral mortar Feb 11, 2019, 2:22 AM

#

Ok, why are you even compiling from source? 😄

#

Just for fun or for smthg specific?

astral star Feb 11, 2019, 2:24 AM

#

It's for Chosker's IBL and Saimon Ma's toon shader models

#

It's maintained for 4.21 by kusogaki77

#

The game I am developing right now uses toon shading as a central aspect in the overall graphics design

spiral mortar Feb 11, 2019, 2:25 AM

#

You can achieve toon shading without a custom engine

astral star Feb 11, 2019, 2:26 AM

#

Using post process?

spiral mortar Feb 11, 2019, 2:26 AM

#

Yup

#

I suppose it's not what you want

astral star Feb 11, 2019, 2:26 AM

#

Yeeeah, post process was my last resort

#

The current source I'm trying to compile is feature-rich and has everything I need

spiral mortar Feb 11, 2019, 2:27 AM

#

Ok so with a hdd and your CPU building might take up to 8h I'd say

#

(kinda random number)

#

As it takes me 45min with a SSD and a CPU 4 times faster than yours

astral star Feb 11, 2019, 2:28 AM

#

Woah

#

So this extremely long compile time must be normal because my CPU is so average

#

Would upgrading the RAM make it faster?

spiral mortar Feb 11, 2019, 2:28 AM

#

Maybe

#

Depends if it uses 100% of it at some point or not

#

It's a laptop ?

astral star Feb 11, 2019, 2:29 AM

#

It was using 100% disk usage and 85% RAM usage

#

yes

spiral mortar Feb 11, 2019, 2:30 AM

#

Hum yeah so might be thermal throttling as well

#

Can you link the repo?

astral star Feb 11, 2019, 2:31 AM

#

https://github.com/kusogaki77/UnrealEngine

#

Thermal throttling, huh

#

I'm somewhat paranoid

#

If I leave my PC on for all 8 hours would something bad happen?

spiral mortar Feb 11, 2019, 2:32 AM

#

Nope your CPU will just be very slow to not overheat

#

You really really need that fork?

astral star Feb 11, 2019, 2:33 AM

#

Yes

#

I really, really need it 😄

spiral mortar Feb 11, 2019, 2:33 AM

#

Ok if you're lucky I'll make a binary build of it tomorrow

#

Don't count on it though

astral star Feb 11, 2019, 2:34 AM

#

Thanks! And thanks for the help

granite dust Feb 11, 2019, 3:39 AM

#

Engine compiles in < 3 hours on my laptop from an HDD. It's a laptop i7 with 4/8 threads and 2.6ghz, though

spiral mortar Feb 11, 2019, 4:05 AM

#

Would be interesting to know the exact impact of SSD vs HDD

limber jacinth Feb 11, 2019, 11:29 AM

#

33mins with NVME and Ryzen 2700X 😄

spiral mortar Feb 11, 2019, 11:54 AM

#

Shh

bold hare Feb 12, 2019, 6:55 AM

#

Guys, what IDE you use on Linux for unreal engine code?
Tried a bunch of different options, all pretty bad: The only one that works pretty well is surprisingly VSCode.
Tried QtCreator, CLion, and KDevelop. All where terrible.

spiral mortar Feb 12, 2019, 8:21 AM

#

I personally gave up on using Linux with UE dep

limber jacinth Feb 12, 2019, 2:33 PM

#

Clion is just bad, KDevelop useless, QTCreator isnt bad but not suitable for UE, VSCode is obvs the best choice so far

#

i heard there maybe another IDE that has support for UE4

#

cant remember what it is but i think its Python one or something

hollow plinth Feb 12, 2019, 3:43 PM

#

Clion. No typical ide stuff works but whatever

hidden hedge Feb 12, 2019, 5:36 PM

#

what's the issue with clion in UE4, just not performant enough with a large code base?

hollow plinth Feb 12, 2019, 9:12 PM

#

you have to teach clion index your project and ue source by giving cmake-type project to it or other type of project that is acceptable by clion's plugins

hidden hedge Feb 13, 2019, 12:09 AM

#

well there is a plugin for that already

#

so i imagine the issue is with just general IDE performance

astral star Feb 13, 2019, 12:33 AM

#

It took 6 hours and 39 mins for me to compile

#

I noticed disk usage was 100% the entire time so maybe an SSD would speed things up

granite dust Feb 13, 2019, 12:36 AM

#

SSDs are good

bold hare Feb 13, 2019, 5:51 AM

#

I was unable to debug unreal engine code in CLion: "Command Timed Out", googled it, apparently it's a "thing" in clion world.
https://blog.jetbrains.com/clion/2015/06/clion-1-0-4-update-fix-for-command-timed-out-problem/
Also, it took me some time, hacking through clion's .idea/*.xml files to make it show the source directory as directory and not flat files
Not to speak the ammoun of RAM it eats and still performs badly.

CLion Blog

Anastasia Kazakova

CLion 1.0.4 update: fix for 'Command timed out' problem

stable hemlock Feb 13, 2019, 9:45 AM

#

Im currently editing the engine so that i can read the SceneTexture: CustomStencil from the base pass and i got that working. Now the thing is, when i try to use the output of the scenetexture to pass to the opacity mask value of a masked material, it just goes black instead of clipping the pixels

#

heres the fork im currently working on: https://github.com/moyosamedia/UnrealEngine/tree/4.21-basspass-stencil

#

bCanMaskedBeAssumedOpaque is also not the case since if i do an uv.x > .5 ? use stencil : 0 in the material, the else clips just fine

stable hemlock Feb 13, 2019, 1:23 PM

#

The GetMaterialMaskInputRaw() in \Engine\Shaders\Private\MaterialTemplate.ush:1682 seems to always return 1

#

    float4  Local0 = SceneTextureLookup(GetDefaultSceneTextureUV(Parameters, 25), 25, false);
    float  Local1 = (Local0.rgba.r / 255.00000000);
    float  Local2 = ((abs(Local1 - (1.00000000 / 255.00000000)) > 0.00001000) ? (Local1 >= (1.00000000 / 255.00000000) ? 0.00000000 : 0.00000000) : 1.00000000);
    float  Local3 = (1.00000000 - Local2);
    
    PixelMaterialInputs.OpacityMask = Local3;

this is in the generated shader file which seems just fine to me

bright olive Feb 13, 2019, 9:25 PM

#

merging to 4.22, git is doing inexact rename detection on every commit I cherry-pick from my 4.21 changes, even though they mostly modify one file with the same path between the two
any idea what is going on there?

#

I have about 60 commits so it might add several hours onto my merge..

#

ah opps, I'll ask in #source-control

brisk silo Feb 13, 2019, 9:54 PM

#

like a total madman

#

i have implemented deferred transforms in unreal

#

as a feature

#

in the scene component

#

its part of some research work im doing. "Can the slow as balls transform system be optimized?"

#

im going to make it deferred + parallel, but only on scene components. It will still call the usual code in the static meshes and other similar stuff

bright olive Feb 13, 2019, 10:02 PM

#

@brisk silo deferred as in lazy eval?

brisk silo Feb 13, 2019, 10:05 PM

#

@bright olive kinda

#

ive implemented a transform system, hooked into the ticks, that performs all the movements

#

when UpdateComponentToWorld gets called on a deferred scene component, this gets bypassed and the transform sys gets notified

#

then it calls it later

#

in a loop

#

ive seen that its easy to actually only move stuff once per frame with this, which is sweet

#

but of course it needs to be ultra limited

#

my goal is to use that in pubg for attachments

bright olive Feb 13, 2019, 10:07 PM

#

so it squashes down multiple UpdateComponentToWorld into one?

brisk silo Feb 13, 2019, 10:07 PM

#

and actually use a data-oriented transform system

#

yes

#

it comes from the transform systme i was developing for my ECS experiments

#

eventually, i want that transform system (the ecs one) to be literally a checkbox

#

and be parallelized

bright olive Feb 13, 2019, 10:07 PM

#

and if you read it in the mean time it forces an eval?

brisk silo Feb 13, 2019, 10:08 PM

#

pubg is a case where we have 100 players, and there are tons of attachments (weapon, inventory, etc) where those transforms could be done in parallel

bright olive Feb 13, 2019, 10:08 PM

#

or is it always deferred

brisk silo Feb 13, 2019, 10:08 PM

#

allways deferred

#

lazy eval would be very hard to get working

bright olive Feb 13, 2019, 10:08 PM

#

the main place that does lots of transforms to the same thing is in movement replay right?

#

for character movement saved moves

brisk silo Feb 13, 2019, 10:09 PM

#

yes. The issue in pubg is the attachments

granite dust Feb 13, 2019, 10:09 PM

#

this is good just for stuff that has no physics, I suppose

brisk silo Feb 13, 2019, 10:09 PM

#

that is exactly the idea

#

weapons, weapon attachments, and all the socketed holstered weapons

#

thats a LOT of transforms

#

when you multiply by 100

granite dust Feb 13, 2019, 10:10 PM

#

Have you seen how the late update code works for hands?

brisk silo Feb 13, 2019, 10:10 PM

#

nope

granite dust Feb 13, 2019, 10:10 PM

#

it only updates the render transform right at the end

brisk silo Feb 13, 2019, 10:10 PM

#

what i want to do is to defer transforms + parallelize

granite dust Feb 13, 2019, 10:10 PM

#

so you can bypass updating the physical transform

bright olive Feb 13, 2019, 10:10 PM

#

there is some kind of world transform caching system already right?

brisk silo Feb 13, 2019, 10:10 PM

#

there are 100 players doing the same thing

#

so it should be possible to parallelize a bunch of their transforms

#

but not all of it of course

bright olive Feb 13, 2019, 10:11 PM

#

from a few versions back

brisk silo Feb 13, 2019, 10:11 PM

#

there is

#

for the movement component

bright olive Feb 13, 2019, 10:11 PM

#

but it is cached on each instance I guess

brisk silo Feb 13, 2019, 10:11 PM

#

its... hacky

bright olive Feb 13, 2019, 10:11 PM

#

so not good for cpu cache

brisk silo Feb 13, 2019, 10:11 PM

#

FSCopedSavedmove stuff

#

and yeah, the pointerific stuff aint good

granite dust Feb 13, 2019, 10:12 PM

#

But dive into the late update code a bit @brisk silo you might be able to get additional gains by just not updating the transforms and only updating the render transforms

brisk silo Feb 13, 2019, 10:12 PM

#

my transform system is ECS and its super cache oriented

#

its similar to the stuff i was doing in my own engine

#

to update 400.000 transforms in 2 miliseconds

#

@granite dust thats something i wanted to do

#

straight up skip all the game bullshit and update render transform itself

granite dust Feb 13, 2019, 10:12 PM

#

yeah

brisk silo Feb 13, 2019, 10:12 PM

#

at least for the holstered weapons

bright olive Feb 13, 2019, 10:13 PM

#

I may have been thinking of this:

    FRotationConversionCache WorldRotationCache;

    /** Cache that avoids Quat<->Rotator conversions if possible. Only to be used with RelativeRotation. */
    FRotationConversionCache RelativeRotationCache;```

brisk silo Feb 13, 2019, 10:13 PM

#

but its mostly pure experimental

granite dust Feb 13, 2019, 10:13 PM

#

well LateUpdate has an example of that for you

brisk silo Feb 13, 2019, 10:13 PM

#

the biggest problem i see is just the component lifetime

#

Pie, editor, blueprint window, etc

#

its already fucked me quite a bit until i got the deferred transform working

#

its going to be hacky as fuck

#

and im ok with it

granite dust Feb 13, 2019, 10:15 PM

#

the hackier the better.. especially with giant projects being worked on by tons of people

brisk silo Feb 13, 2019, 10:15 PM

#

if we can skip 0.5 ms or 1 ms im golden

#

i already managed to cut 3 miliseconds from pubg PS4

bright olive Feb 13, 2019, 10:15 PM

#

@granite dust well hacky is ok if the non-hacky way is converting all of UE4 to an ECS

brisk silo Feb 13, 2019, 10:15 PM

#

by straight up replacing Overlaps

#

enterely

granite dust Feb 13, 2019, 10:16 PM

#

nice! Overlaps are so damn expensive

brisk silo Feb 13, 2019, 10:16 PM

#

i literally added code to 100% nuke overlaps from the engine

#

but added a new collision system, simplified, data-oriented (faaaaast)

#

takes...

#

0.01 ms to execute

#

so yeah, from 3 ms to 0.01

#

and once its fully tested, probably a thousand lines of hacky code just removed

granite dust Feb 13, 2019, 10:18 PM

#

[REDACTED]

brisk silo Feb 13, 2019, 10:18 PM

#

oh really?

#

we are on 4.16

#

and we wont really update much

#

the only thing they do is cherrypick specific stuff

granite dust Feb 13, 2019, 10:18 PM

#

[REDACTED]

#

[REDACTED]

brisk silo Feb 13, 2019, 10:19 PM

#

neat

#

how do you know that

granite dust Feb 13, 2019, 10:19 PM

#

Someone told me

#

maybe I'm not supposed to talk about it?

spiral mortar Feb 13, 2019, 10:19 PM

#

lol

brisk silo Feb 13, 2019, 10:19 PM

#

secret

#

you snitch

granite dust Feb 13, 2019, 10:21 PM

#

Epic folks are all super open in person, but they don't make public announcements until the moment a thing is done

spiral mortar Feb 13, 2019, 10:21 PM

#

Makes sense, as that way they can always cancel it if needed

granite dust Feb 13, 2019, 10:25 PM

#

I've released a version of SculptrVR on every Engine version since 4.10 except one.. I can't remember which one

#

one of them had an awful bug where cubemap skyboxes whited out gameplay

brisk silo Feb 13, 2019, 10:26 PM

#

Intruders: Hide and seek released today on PSVR

#

they are on 4.14

#

for PSVR

granite dust Feb 13, 2019, 10:26 PM

#

jesus

brisk silo Feb 13, 2019, 10:26 PM

#

i guess you know what that means @granite dust

#

people just told them to not update and they took it to heart

#

at the end it sabotaged them HARD

#

delays for days just from PSVR bugs

#

they were going against me in a PSVR contest in spain

#

won due to some bullshit

granite dust Feb 13, 2019, 10:27 PM

#

Each engine update took me about a day or two on average. More in the early days when I had more engine changes

#

over time Epic implemented almost all my changes 😛

#

Now I have only 5 files with changes and another 10 or so specific to PS4

brisk silo Feb 13, 2019, 10:28 PM

#

neat

#

i made an article explaining the issues i had with psvr

#

a bug where timing would get fuckd when going into rest mode

granite dust Feb 13, 2019, 10:29 PM

#

I had to rebuild most of the save system, and the enter-into-VR process

#

There was also no way to delete saves on PS4 until 4.21, lol

#

oh wait... that might be secret, too?

#

gah

thick storm Feb 14, 2019, 11:01 AM

#

so what was redacterd ?

#

epic working on finally optimizing those ridiculous transforms ? ;s

#

wouldnt suprisme a bit

#

optimizing it

#

would like milions of dollars saved

#

on AWS instances

stable hemlock Feb 14, 2019, 11:54 AM

#

Does anyone know the point behind having AddForce methods in both PhysScene_PhysX and PhysicsInterface_PhysX, but using the interface ones only on BodyInstance's impulse related functions and the scene ones on the rest of the functions on BodyInstance?

thick storm Feb 14, 2019, 12:22 PM

#

work in progress

#

PhysicsInterface is new abstraction over physics

stable hemlock Feb 14, 2019, 12:44 PM

#

Oh ok, makes sense. I thought it could have a deeper meaning.

#

And also I understood that the PhysX portion was already ported to the new abstraction, never assumed it to be WIP

#

Thanks!

brisk silo Feb 14, 2019, 5:01 PM

#

so, remember that stuff about "ima make transform faster"

#

well

#

it works

#

and it indeed makes transforms faster

swift ivy Feb 14, 2019, 5:02 PM

#

oo any stats you're able to share? I'm interested in the results

brisk silo Feb 14, 2019, 5:04 PM

#

at the moment, due to its deferred-ness it can make stuff only transform ONCE and only ONCE per frame

#

which is very, very good

#

parallelism is possible, but i still havent implemented it there

#

SceneNodes can now be "fully ECS", and basically skip all unreal transform code

#

but when the transform updates a mesh or similar, it goes and sets the component location directly. Also no physics nor overlaps nor anything. Final location + mark render state dirty

#

as expected, RIP physics

#

about 30% faster right now

#

once i have some stuff more optimal + MT it will be more than twice faster

swift ivy Feb 14, 2019, 5:07 PM

#

How do you handle threaded updates when one transform relies on another? Like a hierarchical relationship?

brisk silo Feb 14, 2019, 5:07 PM

#

only the components you mark as "deferred" will go multithreaded

#

so... dont put deferred if one of your parents is already deferred

swift ivy Feb 14, 2019, 5:07 PM

#

Yea gotcha

brisk silo Feb 14, 2019, 5:08 PM

#

the usage is something like

#

mark deferred on a player mesh

#

and then all the attachments get their transofrm multithreaded

#

i have 2 flags

#

one is deferred, and other Skiptransform

#

skiptransform essentially forces the transform to be calculated ECS only

#

(no physics, no overlaps, no rendering)

#

if the proof of concept gets validated and i integrate that into pubg, i will be responsible for optimizing like 5 miliseconds of CPU time beetween that and the physics stuff

#

not a bad thing to comment

swift ivy Feb 14, 2019, 5:18 PM

#

5ms 👀

brisk silo Feb 14, 2019, 5:20 PM

#

the overlap optimization (nuke it from orbit and create a faster version) upgraded about 2.5-3 miliseconds on console

#

at the start of the game

granite dust Feb 14, 2019, 5:26 PM

#

that's awesome

#

I was wondering about the deferred child of deferred situation, but yeah it seems like just not allowing it is the thing to do

brisk silo Feb 14, 2019, 5:29 PM

#

its allowed, but only becouse right now i havent finished parallelism

#

could be allowed to have deferred child of deferred, but it would cause a perf hit

#

becouse deferred works by doing Add on an array with the scene component pointer

#

just an array of "this needs updates"

#

so if you have child deferred, it will get added back again. It can still be parallelized no issue, but it would be quite inneficient

#

for the paralelism, the system is going to calculate the entire transform chain, and for the stuff that should actually update, it gets added into a queue

#

and then it calls SetWorldTransform (simplified version tho) on a loop

#

my current issue is some bullshit with the order in which components get attached. I want it to be done at startup properly, but weird shit happens some times

#

due to update orders and similar

#

so either i add a specific pass on BeginPlay to connect everything AFTER stuff spawned, or maybe try to JIT it

bronze crest Feb 14, 2019, 5:35 PM

#

I was able to optimize some engine navmesh code from 30 ms to 2 ms, just by replacing TArray with TSet in a function... The function was doing 22000 times AddUnique on a TArray

brisk silo Feb 14, 2019, 5:35 PM

#

LOOOOOOOOOOOOOOOOOOOOOL

#

did you PR it?

granite dust Feb 14, 2019, 5:37 PM

#

holy hell

bronze crest Feb 14, 2019, 5:37 PM

#

@brisk silo no, I just noticed that a few minutes ago 😄

green idol Feb 14, 2019, 5:38 PM

#

@bronze crest was that code running every frame? or just once during some build step?

brisk silo Feb 14, 2019, 5:38 PM

#

you really dont know the true omniscience

#

just use linked lists everywhere

#

godot style

#

http://www.dataorienteddesign.com/dodbook/ best book to learn about how to fast

Data-Oriented Design

bronze crest Feb 14, 2019, 5:39 PM

#

@green idol it was 30 ms spikes, not every frame. on average it resulted in just ~1ms or so. but 30 ms spikes in VR are very annoying

green idol Feb 14, 2019, 5:39 PM

#

yup awesome. so it did happen at runtime. that's mostly what i was curious about.

brisk silo Feb 14, 2019, 5:39 PM

#

@bronze crest if it really is a 1 liner, PR it

granite dust Feb 14, 2019, 5:40 PM

#

I went to a local "demo day" meetup this weekend and one guy gave a whole presentation about speeding up some code he wrote by changing from an array to a Map. A map that always points to 1 because he didn't know about sets.

bronze crest Feb 14, 2019, 5:40 PM

#

@brisk silo well it's not a 1 liner, more like 10 liner

brisk silo Feb 14, 2019, 5:40 PM

#

good enough

granite dust Feb 14, 2019, 5:40 PM

#

cpp only?

brisk silo Feb 14, 2019, 5:40 PM

#

epic likes those tiny changes

granite dust Feb 14, 2019, 5:40 PM

#

yeah the only changes I've successfully PRed are small cpp only changes

bronze crest Feb 14, 2019, 5:40 PM

#

yeah, cpp only

#

all within 1 function

brisk silo Feb 14, 2019, 5:41 PM

#

@granite dust wait, a map just to know if something exists?

#

filthy casual

granite dust Feb 14, 2019, 5:41 PM

#

lol yeah

brisk silo Feb 14, 2019, 5:41 PM

#

do you even bloom filter

#

thats an operation for a bloom filter. a bloom filter gives you "definitely doesnt exist" or "probably exists"

thick storm Feb 14, 2019, 5:41 PM

#

@bronze crest pr it

brisk silo Feb 14, 2019, 5:41 PM

#

and its extremelly trivial to implement

thick storm Feb 14, 2019, 5:41 PM

#

Mieszko will look at it

#

and if not

#

I poke him to look at it (;

bronze crest Feb 14, 2019, 5:42 PM

#

since when do you guys talk so much here in this channel 😄 last I looked much into here, which was probably a few years ago, #engine-source was always very quiet

granite dust Feb 14, 2019, 5:42 PM

#

I spent a bunch of time building my own sets and maps recently. I tried puting a bloom filter before gets, but it just slowed things down

#

I think they miiight make sense with absolutely giant datasets

bronze crest Feb 14, 2019, 5:43 PM

#

@thick storm I'd poke him myself 😛

granite dust Feb 14, 2019, 5:43 PM

#

but I suspect they don't really make sense until you are storing your set/map on disk

brisk silo Feb 14, 2019, 5:43 PM

#

@granite dust interesting. On my own ive used tech similar to those to optimize my ECS

#

even if its a 1 bit bloom filter?

#

thats just hash and lookup val

granite dust Feb 14, 2019, 5:44 PM

#

Yeah I that's what I did

brisk silo Feb 14, 2019, 5:44 PM

#

interesting

#

mine uses bloom filters to accelerate the search when querying components. Each component gets 1 bit, and that builds a "pattern", then i use it to check if a given mem block has that pattern

#

or fits that pattern

granite dust Feb 14, 2019, 5:45 PM

#

Maybe it works for second-indirection sets/maps

#

like yours

#

mine have small keys and values, so they are inlined

#

I'm sure it also depends on size dramatically. If the bloom fliter pushes you just beyond L2 cache it will definitely hurt more than help

brisk silo Feb 14, 2019, 5:48 PM

#

bloom filter pushing beyond l2?

#

a bloom filter should be basically an u64

#

it can be used to accelerate searches on a hashmap

#

in your hashmap data strucutre, you have pointer to memory + bloom filter

#

when you have to hash (becouse its a hashmap after all), check on the bloom filter first

granite dust Feb 14, 2019, 5:49 PM

#

Google made a new hashmap that checks 8 bins with one lookup using vector intrinsics, and it's apparently kickick all the asses

brisk silo Feb 14, 2019, 5:49 PM

#

you mean robin_map?

granite dust Feb 14, 2019, 5:49 PM

#

no

#

gimme a sec

brisk silo Feb 14, 2019, 5:49 PM

#

btw, those array-based hashmaps are damn fast

granite dust Feb 14, 2019, 5:50 PM

#

https://tessil.github.io/2016/08/29/benchmark-hopscotch-map.html

#

unfortunately all of these benchmarks are way outside my range of interest

#

I have little 8k-16k element maps all over there place

#

used for connecting vertices during meshing, for example

brisk silo Feb 14, 2019, 5:52 PM

#

open hashmaps excel at small maps

#

becouse they are kept in caches

#

@granite dust have you thought of doing something like what i did for the acceleration of my space battle thingy?

#

calculate morton code + sort it

#

you get an array of "buckets" per tile size

granite dust Feb 14, 2019, 5:53 PM

#

that's basically how RTX works

brisk silo Feb 14, 2019, 5:53 PM

#

not really, but it is how some gpu particle systems do work

#

becouse its 100% parallel

#

its a parallel for to calculate morton code, and then parallel sort

granite dust Feb 14, 2019, 5:54 PM

#

I think RTX is a hardware accelerated sort and hardware accelerated binary search

brisk silo Feb 14, 2019, 5:54 PM

#

nope

#

its BVH fixed harward

#

well, BVH and triangle

#

so its ray->AABB intersection, and ray->triangle intersection

#

and i think the AABB part actually works BSP style with some prefetching or similar

#

i also dont know if those are SIMD

#

would make sense to have both parts be SIMD and work on ray batches

granite dust Feb 14, 2019, 5:58 PM

#

but yeah I'm doing open hashmaps with quadratic probing

#

the google hashmap is actually open as well

#

sort of

brisk silo Feb 14, 2019, 5:59 PM

#

btw, unreal TMap is open adressing

#

i found it to be quite satisfactory in perf

granite dust Feb 14, 2019, 5:59 PM

#

they kind of have a chunked hash map with bloom filter headers

#

the bloom filter header thing is built to check a ton of bins in the open map simultaneously using vector intrinsics

#

switching from TMap to my own thing resulted in a 45% perf improvement

#

Something like that at least

brisk silo Feb 14, 2019, 6:02 PM

#

nice

granite dust Feb 14, 2019, 6:03 PM

#

UE4's TMap uses "sparse vectors", which is just a dense vector with a bitfield basically acting like a bloom filter

#

it got beat by almost every map I tried

#

other than std of course

brisk silo Feb 14, 2019, 6:04 PM

#

i compared it against unordered map

granite dust Feb 14, 2019, 6:04 PM

#

std is god awful

brisk silo Feb 14, 2019, 6:04 PM

#

unordered is like 10 times slower

#

truly godawful

#

do you even linked list, bruh?

#

std standard commite

#

tho std unordered keeps objects in-place

#

even if it resizes

granite dust Feb 14, 2019, 6:05 PM

#

by adding a second indirection

#

whaaat

#

what a shitty tradeoff

brisk silo Feb 14, 2019, 6:05 PM

#

it was designed in the 90s lol

#

most of the open adressing hashmaps are newer

#

i do think std should add a std::open_map or similar

#

which basically relaxes the "pointers must be kept valid" requirement

granite dust Feb 14, 2019, 6:06 PM

#

A nice compromise, yeah

brisk silo Feb 14, 2019, 6:08 PM

#

my biggest issue with the stl

#

is just HOW SLOW it is in debug mode

#

absolutely comical

#

i have a obj loader that outputs std vectors, and uses iostreams internally

#

in debug mode

#

it takes 10 minutes to load stanford dragon

granite dust Feb 14, 2019, 6:09 PM

#

I just hate iterators. Simple code becomes verbose and hard for me to read

brisk silo Feb 14, 2019, 6:09 PM

#

ranges tho. We are finally getting the truly good shit

#

only took till C++20 to be in

#

with ranges, we finally get the true potential of iterators

#

std::sort(myvector)

#

and it sorts it

#

no need to .begin .end

granite dust Feb 14, 2019, 6:11 PM

#

woah shit

brisk silo Feb 14, 2019, 6:11 PM

#

thats ranges kiddie mode

#

you can go wild on them

#

becouse you can do stuff like

#

reverse(vector) | foreach(vector,[](auto idx){ i ^3}) | take(vector, 5)

#

reverse a vector, then run a for loop on it, and take the first 5 elements

#

you know what the truly fun is?

#

the for loop is only called 5 times

#

becouse ranges are lazy

#

and becouse they come alongside Concepts

#

if you do mistakes

#

the error messages are readable

#

you can also do this

#

 for(auto it: myarray | view::take(10)) {
}```

proper vine Feb 15, 2019, 12:17 AM

#

once thats out

#

then once Epic adopts it

#

and once Nintendo adopts it

#

and then Microsoft adopts it

#

and then Sony adopts it

#

and then Apple adopts it

#

And then Google adopts it

#

then we might be able to use it in ue4

crisp river Feb 15, 2019, 1:53 AM

#

🤷 my last company was just barely getting on the C++11 train when I left, Unreal already has them beat there 🤣

#

I think they were still fighting the holy wars of auto

hollow kernel Feb 15, 2019, 5:02 AM

#

Anyone here running Win10 w/ Japanese as the Display Language? Windows automatically converts \ to ￥ and it seems to be causing probs with Skookum Script being able to find projects.

Unfortunately, I have to keep the windows display language as Japanese. Changing the VS font to Lucinda Console (something that fixes it for DOS) doesnt seem to fix it.

stable mantle Feb 15, 2019, 9:33 AM

#

Hello, I am trying to debug the AutomationTool program for HTML5. Specifically, I am trying to get some breakpoints working on HTML5Platform.Automation.cs
I can debug the UnrealBuildTool program, by adding some command line arguments and setting UnrealBuildTool as startup project
However when I try to do the same with Automation Tool I can't get it to run
is it possible to debug the AutomationTool program?

brisk silo Feb 15, 2019, 4:49 PM

#

so, on that fast transform stuff

#

it works

#

its super fucking fast

#

and its multithreaded

#

and its actually not even that complicated

#

@granite dust . There are 3 functions you need to "force" a scene component to a given world location, and to do it bypassing EVERYTHING

#

and 2 of those 3 can be done in parallel becouse they are fully safe

#

SetComponentToWorld() to set the world matrix. CalcBounds() to update the bounding box, and MarkRenderStateDirty so the render thread updates the matrices of the proxies

#

you need nothing more than that

#

bypasses physics, bypasses overlaps, and bypasses child updates

stable mantle Feb 15, 2019, 5:02 PM

#

@proper vine, why Epic and UE4 in first and last, respectively? Do you mean Epic is on the vanguard, but not UE4? Are they running different speeds?

brisk silo Feb 15, 2019, 5:10 PM

#

Epic games experimenting

#

they are allways on top of all the fancy new features, but until the feature is supported by every single platform, and there are no regressions, it wont be done

#

in the early days, UE4 didnt use all the C++11 features

#

for example, you had OVERRIDE as a macro (for virtuals)

stable mantle Feb 15, 2019, 5:36 PM

#

@brisk silo you mean, the nice stuff is in specific branches (such as dev-mobile for me fro HTML5) or not even there? are we missing the good stuff in general?

#

*for HTML5

brisk silo Feb 15, 2019, 5:37 PM

#

not even there

#

epic games has research teams who have internal branches doing crazy shit

#

or just doing ue5 stuff

stable mantle Feb 15, 2019, 5:38 PM

#

can we access that?

brisk silo Feb 15, 2019, 5:47 PM

#

no

stable mantle Feb 15, 2019, 6:20 PM

#

lol

static spoke Feb 15, 2019, 6:49 PM

#

Is the Source Code now generating solutions with VS 2019? Do you still need 2017? Thanks.

elder falcon Feb 15, 2019, 6:51 PM

#

vs 2019 is a preview release, you shouldn't even be thinking about using it in production

stable mantle Feb 15, 2019, 6:54 PM

#

@brisk silo @elder falcon do you know what is necessary for debugging the Automation Tool whilst packaging for HTML5? Specifically, I am trying to get some breakpoints working on HTML5Platform.Automation.cs

elder falcon Feb 15, 2019, 6:55 PM

#

no, I never had to debug the automation tool

stable mantle Feb 15, 2019, 6:56 PM

#

do you have any insght, though?

#

*insight

elder falcon Feb 15, 2019, 7:01 PM

#

were you able to attach a debugger to it in general and it's just that file specifically not working?

stable mantle Feb 15, 2019, 7:01 PM

#

i add breakpoints but they dont "turn on"

elder falcon Feb 15, 2019, 7:01 PM

#

it might have something to do with it compiling those files every time it starts somehow

stable mantle Feb 15, 2019, 7:02 PM

#

but the automation tool.. does it run on packaging or much before that?

elder falcon Feb 15, 2019, 7:02 PM

#

it controls the entire packaging process

stable mantle Feb 15, 2019, 7:02 PM

#

I am trying to debug whilst packaging, maybe I'm wrong

#

ok, cool

#

so there must be a way

#

do you know what kind of logging can I use in programs code?

elder falcon Feb 15, 2019, 7:03 PM

#

probably the Log.TraceInformation(bla)

#

same as UBT?

stable mantle Feb 15, 2019, 7:04 PM

#

LogInformation(etcetc) gives me no output

#

hum, ok, I'll try that one, thank you

#

aaaah, wait, I think I've tried that one already but it wouldnt compile I think

#

or maybe not, Ill try agaibn

#

*again

stable mantle Feb 15, 2019, 7:22 PM

#

@elder falcon do you know why there are so many programs in the source solution, yet only a few can be selected for building on the drop down list?

elder falcon Feb 15, 2019, 7:22 PM

#

drop down list?

stable mantle Feb 15, 2019, 7:22 PM

#

ahhh, sorry

#

its a different name

#

sorry, non native here

#

drop down something

elder falcon Feb 15, 2019, 7:23 PM

#

no list is good I just wasn't sure which one you meant

stable mantle Feb 15, 2019, 7:23 PM

#

the thingy next to Win64/32/

elder falcon Feb 15, 2019, 7:23 PM

#

oh

stable mantle Feb 15, 2019, 7:23 PM

#

on the right

elder falcon Feb 15, 2019, 7:23 PM

#

that's a good question

#

never thought about it

stable mantle Feb 15, 2019, 7:23 PM

#

just curious

#

my guess was... maybe they arent meant to be built per se?

#

but again, then why are UBT and others?

#

not built, run per se

#

i mean

#

anyways, I can't seem to find a way to debug AutTool, with LogTracewarning(lalalala) I get "CommmandUtils.Logs(lalalala) is a method, which is not valid in the given context"

#

however if I use LogInformation(lalala) I get no output at all

stable mantle Feb 15, 2019, 7:52 PM

#

ah, because it is deprecated

#

🤦

#

"Deprecated renamed CommandUtils.Log to CommandUtils.LogInformation, to avoid conflicts with the underlying Tools.DotNETCommon.Log class."

steep blaze Feb 15, 2019, 7:56 PM

#

Hi all, if I compiled my own version of the engine on my machine, and i want to move it to another machine... should I copy the source and rebuild on other machine or can I just move the final binaries over?

cosmic pulsar Feb 16, 2019, 9:54 AM

#

Anyone know how to resolve this when generating project files for engine source?

📎 27940f79e83d550bfd63bd031751dc66.png

quick crystal Feb 16, 2019, 2:52 PM

#

I seem to run into a problem quite a bit - I go to compile and VS tells me that the build failed because a process is holding on to a file in the ue4 build phase... but I just launched my computer. This is the first build attempt of the day

#

It also happens after I have closed the editor. That at least makes more sense - something didn't close a file handle properly or something of that nature

#

But on first start up??

#

I guess my question is: has anyone else come across this problem and if so, short of pressing delete on anything VS tooling related in proc manager what did you do to get around it?\

stable mantle Feb 16, 2019, 5:58 PM

#

@quick crystal , are you compiling a solution with both game and engine or just the engine?

quick crystal Feb 16, 2019, 5:58 PM

#

I'm not sure what you mean. I would think both? I open up the game sln and build from there

stable mantle Feb 16, 2019, 5:59 PM

#

ok, and are you using the github source of the engine?

quick crystal Feb 16, 2019, 5:59 PM

#

Yeah

stable mantle Feb 16, 2019, 5:59 PM

#

ok

quick crystal Feb 16, 2019, 5:59 PM

#

A forked copy

stable mantle Feb 16, 2019, 5:59 PM

#

I'll give you my 2 cents, hopefully it may help

quick crystal Feb 16, 2019, 5:59 PM

#

Ok 😃 any help is appreciated!

stable mantle Feb 16, 2019, 6:00 PM

#

i am having the same issue when I make changes, related to HTML5 deployment

#

please hear me to the end

#

in my case, when any change is made, I have found instructions to build in this order:

#

AutomationTool
- AutomationToolLauncher
- UnrealBuildTool
- UnrealHeaderTool
- HTML5LaunchHelper
- ShaderCompileWorker
- UnrealPak
- UnrealLightmass
- UnrealFileServer

#

and then, finally, bulild UE4

#

and only then

#

build the game one

#

I guess you could try first, just building UE4

#

and then your game

#

so, in VStudio, right click on UE4 and build

#

after built

#

right click on your game and build

#

maybe all the other steps are not necessary in your case

#

then, after akll built, set you game as the startup project and run

#

or if you dont want to debug, run without debugging or just open the .uproject that you've just updated

#

this is all I can tell right now

#

of my knowledge

elder falcon Feb 16, 2019, 6:06 PM

#

@quick crystal are you using build solution?

quick crystal Feb 16, 2019, 6:06 PM

#

I just do build solution

#

not rebuild

#

from the game project

elder falcon Feb 16, 2019, 6:06 PM

#

only build targets one by one, ubt seems to have a bug currently where the wait mutex doesn't work

#

so right click your game project > build

quick crystal Feb 16, 2019, 6:06 PM

#

Yeah I do recall seeing something about a mutex

#

Ah

#

Ok

#

I will start to do that and see if that fixes it

#

Thanks everyone

stable mantle Feb 16, 2019, 6:07 PM

#

👌

#

@elder falcon CommandUtils.LogWarning(blablabla) has just work right now on Automation Tool. I managed to get some prints of variables values I wanted to check. Perfect, this solves my problem right now. But for future it would be really nice to know how to really debug (breakpoints, etc) any program of the engine

#

in my case, debugging Automation Tool whilst packaging for HTML5

elder falcon Feb 16, 2019, 6:14 PM

#

yeah I dunno, I never needed to debug automation tool before

stable mantle Feb 16, 2019, 6:15 PM

#

and others? UBT, etc?

elder falcon Feb 16, 2019, 6:17 PM

#

not those either

stable mantle Feb 16, 2019, 6:18 PM

#

ok

spiral mortar Feb 16, 2019, 6:19 PM

#

I can think of a hacky way

#

Add a while (myBool) {} at the beginning of the program

#

Attach to the process

#

Change myBool to false

elder falcon Feb 16, 2019, 6:20 PM

#

that's pretty br_big_brain

spiral mortar Feb 16, 2019, 6:20 PM

#

😅

#

Should work though

stable mantle Feb 16, 2019, 6:24 PM

#

❤

whole mauve Feb 16, 2019, 10:43 PM

#

is there a way to turn on debug symbols for Android shipping builds?

#

I don't see anything in the target rules

gloomy hamlet Feb 17, 2019, 2:58 AM

#

@stable mantle Simplest way is to just run the program from VS. Open the C# project for UAT/UBT or whatever, set the right startup project, then in project properties Debugging tab, specify the command line arguments you need. Then hit F5.

stable mantle Feb 17, 2019, 9:28 AM

#

@gloomy hamlet yes, for me that works for UBT. But I can't make it work for UAT. Maybe the good command line arguments for UAT must be somehow different than UBT?

#

@gloomy hamlet when I use the same commandline arguments of UBT in UAT and run I get an error "Failed to find command ********"

#

where ****** is the game project name.

#

so maybe the syntax for commandline arguments are differnt for UBT and UAT?

stable mantle Feb 17, 2019, 9:56 AM

#

for UBT this works -> ******** HTML5 Debug C:***.uproject

#

but not for UAT

#

my guess is that UBT calls UAT (but I cant debug UAT this way)... and that UAT isn;t meant to be run?

#

run autonomously, I mean?

gloomy hamlet Feb 17, 2019, 10:05 AM

#

@stable mantle Other way around, UAT calls UBT.

#

If it needs to.

#

And yes commands are different. If you're doing something common like build/package/cook, you should be able to see the command arguments you need by doing it via the editor/project launcher and checking the output log.

stable mantle Feb 17, 2019, 10:07 AM

#

ahh, ok 😃 thanks

#

@gloomy hamlet you mean, launch the editor via VStudio and check output log, or just launch editor by itself, tell it to package for HTML5 and then check the editors output log?

#

I mean, output form VS or inside editor?

gloomy hamlet Feb 17, 2019, 10:22 AM

#

Editor output log.

#

I think packaging from the editor runs the automation tool.

#

If it doesn't, then use the project launcher instead.

stable mantle Feb 17, 2019, 10:23 AM

#

thanks @gloomy hamlet

stable mantle Feb 17, 2019, 12:10 PM

#

@gloomy hamlet hum... I do get command arguments on output, but only for UBT

gloomy hamlet Feb 17, 2019, 12:16 PM

#

https://docs.unrealengine.com/en-US/Engine/Deployment/BuildOperations

#

See the bit at the bottom of the 'Command Line' section.

stable mantle Feb 17, 2019, 12:22 PM

#

purrfect 😃

stoic harbor Feb 17, 2019, 12:35 PM

#

What would be the purpose of this folder's content?
C:\UnrealEngine\Engine\Extras\VisualStudioDebugging

#

I noticed it when installing the UnrealVS extension. Also I noticed the VisualStudioSnippets, but those are clear what they are

lofty charm Feb 17, 2019, 12:44 PM

#

@stoic harbor I believe that's for better debugging, in the sense that if a type is a bit obscure and hard to read in the VS debugger, that extension should simplify it.

#

I've seen that before in other engines when there are weird containers which, due to their odd layout for performance reasons, don't just expose to you an easily-browsed collection of elements.

#

In that case, a .natvis file helps you get that nice view 😃

stoic harbor Feb 17, 2019, 12:47 PM

#

Thanks @lofty charm , that makes sense since for some of the variables it says that they are optimised and wouldn't show their values while debugging in VS. Have you ever used this plugin before?

lofty charm Feb 17, 2019, 12:48 PM

#

@stoic harbor I haven't! Only noticed it recently tbh. But I've seen similar kinds of plugins for other engines, as I mentioned

#

Give it a go!

stoic harbor Feb 17, 2019, 12:48 PM

#

Will do, thanks once again 😃

lofty charm Feb 17, 2019, 12:49 PM

#

@stoic harbor To be clear, though, I don't think it can necessarily help the optimized variables problem - that's what you get in a build that doesn't have full debug info (e.g. you're trying to debug Development Editor instead of DebugGame Editor).

#

It's more for types where the values you see in the VS debugger, while not optimized away, are kinda non-sensical or not what you generally want to inspect.

stoic harbor Feb 17, 2019, 12:51 PM

#

Aha, that is why then. Yeah, I'm using the Development Editor

lofty charm Feb 17, 2019, 12:51 PM

#

If you're using a build from the launcher, make sure you download "Editor Debugging Symbols" under "Options" when downloading the engine. Makes it easier to step into engine code as well.

#

That coupled with using DebugGame Editor... you'll be sweet 👌

stoic harbor Feb 17, 2019, 12:53 PM

#

I'm using a source version of the engine and I have built the engine using Development Editor. Do I have to build the engine using one of the Debugs as well, or I can only build the game project using the DebugGame Editor for this to work?

lofty charm Feb 17, 2019, 12:54 PM

#

Bad News

#

😛

stoic harbor Feb 17, 2019, 12:54 PM

#

hahaha

#

Thought so

lofty charm Feb 17, 2019, 12:54 PM

#

Have fun 😄

stoic harbor Feb 17, 2019, 12:54 PM

#

I already am 😂

stable mantle Feb 17, 2019, 1:07 PM

#

@lofty charm about downloading debugging symbols. Is this possible but with source engine? I can't even add it to the Epic launcher, let alone symbols 😃

lofty charm Feb 17, 2019, 1:08 PM

#

@stable mantle You should get them by building in debug, since you have the engine 😃

stable mantle Feb 17, 2019, 1:08 PM

#

nice 😃

#

what about command line arguments... when compiling debug, ok "Debug" but when debug editor, should it be"Debug Editor" (with a space) or just "Debug" again?

#

for instance "ProjectName HTML5 Debug C:ProjectName/ProjectName.uproject

#

if Debug Editor should be

#

"ProjectName HTML5 Debug C:ProjectName/ProjectName.uproject

#

or

#

"ProjectName HTML5 Debug Editor C:ProjectName/ProjectName.uproject

lofty charm Feb 17, 2019, 1:13 PM

#

Ah sorry, I was speaking in short-hand. I tend to use DebugGame Editor

#

I'm not sure of the exact wording for that particular command though, sorry.

stable mantle Feb 17, 2019, 1:14 PM

#

ok 😃

#

but anyways, do you put a space between DebugGame < SPACE> Editor?

#

i mean when adding command line arguments for debugging, for istance the UnrealBuildTool program

echo gyro Feb 17, 2019, 7:55 PM

#

Any way to package for Xbox from ue spruce build?

pale smelt Feb 17, 2019, 10:29 PM

#

how does ue4 determine which monitor to start up a game on in a multi-monitor setup (multiple monitors on the same output device)

#

and is there a way to set that e.g. from command line that is generic to most/all ue4 games?

echo gyro Feb 17, 2019, 11:12 PM

#

@pale smelt as far as I know it would start on the main monitor set in the OS

pale smelt Feb 17, 2019, 11:16 PM

#

ah ok

#

i have a main monitor which is 1920x1200, which ue4 games always seem to boot on

#

and a secondary which is 1920x1080 which has a hardware video capture device looped through it

#

it would be nice to force the games to boot there, when using the editor its no issue as i put my play-in-editor window on that monitor

#

but for packaged/cooked games...

echo gyro Feb 17, 2019, 11:38 PM

#

Well there’s defiantly ways to do that as I see most games now have an in game option to choose which monitor to play it

bold hare Feb 18, 2019, 12:33 PM

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I'm trying to understand APlayerController::UpdateRotation function.
And i can't understand what is the purpose of this call: SetControlRotation(ViewRotation);
If pawn is rotated using:

APawn* const P = GetPawnOrSpectator();
    if (P)
    {
        P->FaceRotation(ViewRotation, DeltaTime);
    }

Why set control rotation?

clear cloak Feb 18, 2019, 3:39 PM

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How do I properly navigate the editor source code? Like for example lets say that I wanted to find where the functionality for pressing "End" and having the actor snap to the actor below it in the level

green idol Feb 18, 2019, 5:00 PM

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@clear cloak i usually start with the Widget Reflector (under Windows -> Developer Tools I think), then you can capture the reflection data about whatever you mouse over, freeze it with escape, then open the source from there.

bold hare Feb 18, 2019, 5:01 PM

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@clear cloak Go To Editor Preferences, search for 'snap'

📎 unknown.png

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Open Code in any IDE, vscode for example:
Search for 'Snap to floor'

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And here you go

📎 unknown.png

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Engine/Source/Editor/LevelEditor/Private/LevelEditorActions.cpp

clear cloak Feb 18, 2019, 5:02 PM

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awesome thank you

fringe night Feb 18, 2019, 8:32 PM

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Hey folks, I have been bashing my head on this for too long and am looking for advice from someone with a little more experience than me. I created a Slate Window that pops up during PreSave that asks if you want to delete a certain kind of volume. What I can't figure out is how to cancel the Save if the user clicks cancel or closes the window. If anyone has some advice I would really appreciate it. Thanks!

limber jacinth Feb 19, 2019, 2:06 PM

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wrong channel ^

frail pine Feb 19, 2019, 6:17 PM

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Not sure what the right channel is for this, but I'm trying to configure UnrealBuildTool settings on a project-wide level. I see that the setting is tagged with XmlConfigFile, but it seems like the only places to specify those settings (BuildConfiguration.xml) are in per-user folders, not per-project folders? (Engine/Saved/UnrealBuildTool/BuildConfiguration.xml, %APPDATA%/Unreal Engine/UnrealBuildTool/BuildConfiguration.xml, My Documents/Unreal Engine/UnrealBuildTool/BuildConfiguration.xml)

Is there any way to set these settings (or defaults for them) project wide without modifying UBT?

vagrant mica Feb 19, 2019, 10:46 PM

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i can build the engine at home, but i sync'd on another computer to build it and i'm getting an error with the UHT

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it can't parse the parameter for a timer

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EngineTypes.h(2859): error : Unable to parse delegate declaration; expected 'DECLARE_DYNAMIC_DELEGATE' but found 'DECLARE_DYNAMIC_DELEGATE_OneParam'.

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my delegate is declared as such
DECLARE_DYNAMIC_DELEGATE_OneParam(FTimerDeltaDynamicDelegate, float, DeltaSeconds);

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is there an issue with floats as a paramtype?

vagrant mica Feb 19, 2019, 11:05 PM

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nevermind its not my delegate if i delete it it just complains about another one

vagrant mica Feb 20, 2019, 12:57 AM

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ok found it. when i was checking code in, i missed the defaultengine.ini in engine/programs/unrealheadertool/config...

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hopefully this helps someone in the future

bright olive Feb 21, 2019, 4:01 AM

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am I reading this right, multi user editing in 4.22??

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Engine/Plugins/Developer/Concert

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    "FileVersion": 3,
    "Version": 1,
    "VersionName": "0.2",
    "FriendlyName": "Multi-User Editing",
    "Description": "Allow collaborative multi-users sessions in the Editor",```

elder falcon Feb 21, 2019, 4:08 AM

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yes

limber jacinth Feb 21, 2019, 7:19 AM

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so like networked access to someone elses editor, a bit like teamviewing in?

elder falcon Feb 21, 2019, 7:31 AM

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is it bad that I'm just expecting it to either crash or be unusable in some other way

stable hemlock Feb 21, 2019, 11:12 AM

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Anybody know why the FRotator's constructor parameters arranged by Pitch, Yaw, Roll when everything else is Roll, Pitch, Yaw? I've been debugging all night because I didn't notice this stupid arrangement 🙃

thick storm Feb 21, 2019, 11:38 AM

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n

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no

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it's fully features multi user level editing

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you have dedicated server

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which track sessions

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you can start hosting session

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and your editor will act as master

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you connect to server and publish your session

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other people can join

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and it is working quite well

limber jacinth Feb 21, 2019, 3:19 PM

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so like i said

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its a networked accessed edtior

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which people can join in and work on

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maybe the teamviewer bit wasnt a concrete example, but you are technically working in the same editor space surely

thick storm Feb 21, 2019, 6:07 PM

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Scene Fusion - it works exactly like it

wooden tusk Feb 21, 2019, 9:05 PM

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Hey maybe some one smarter than me can tell me what this is. https://github.com/EpicGames/UnrealEngine/tree/4.22/Engine/Source/Runtime/Experimental/Chaos

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Because from my basic understanding is that it is a new physics engine. But I could be wrong

brisk silo Feb 21, 2019, 9:11 PM

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its a physics library

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definitely looks like it

#

📎 unknown.png

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what the shit

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they were developing it outside of unreal?

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looking at the code, stuff is SoA, vectorized, and data oriented

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well shit, this is definitely ultra-early but its written from day1 with absolute perf in mind

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super heavily templatized, more than anything else in the codebase

astral sapphire Feb 21, 2019, 9:17 PM

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https://github.com/EpicGames/UnrealEngine/pull/5376

brisk silo Feb 21, 2019, 9:18 PM

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the entire thing also has parallel-fors for days

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its common to see parallel for->commit data into array

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promising

astral sapphire Feb 21, 2019, 9:18 PM

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Clang-CL Windows build-fixes - accepted

brisk silo Feb 21, 2019, 9:18 PM

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definitely faster than godot physisc

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@wooden tusk so thats pretty much my quick overview. Seems like its just math code, not very attached to stuff

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i see some interesting stuff. I wonder whats the plan for that. Interesting to see code so hilariously over-templatized

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very bullet-like

dapper cipher Feb 21, 2019, 9:23 PM

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Hey everyone, just wondering if someone can answer a question for me. I've been looking at the TextAsset Plugin in the Unreal Academy talk - https://academy.unrealengine.com/Class-Viewer/plugins - and I can't seem to figure out how to implement the asset thumbnail. Been trying to figure out how to get the Icon128 in the resource folder to act as the thumbnail but any way i attempt to implement it doesnt seem to be working

wooden tusk Feb 21, 2019, 9:24 PM

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Thanks for the insight @brisk silo 😃

astral sapphire Feb 21, 2019, 9:30 PM

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I assume Chaos is mentioned physics system for Niagara

limber jacinth Feb 21, 2019, 9:30 PM

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@dapper cipher dont post same question in multiple channels

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at least 3 channels with the same question :/

dapper cipher Feb 21, 2019, 9:33 PM

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ah, didnt realise i had posted in editor-scripting cheers. wasn't sure if here or plugins was the right location so hedged my bets

limber jacinth Feb 21, 2019, 9:53 PM

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and in #plugin-dev :/

spiral mortar Feb 22, 2019, 12:15 AM

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https://github.com/EpicGames/UnrealEngine/blob/4.22/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/Vector.h