Unreal Engine 4.20 Released!

[issam1975]

@Amanda.Bott
please consider a future livestream covering the Digital Human Improvements .

this is a game changer !

[erebel55]

Thank you for all of the new updates. The upgrade from 4.19 to 4.20 was a breeze <3

[GRADgr]

iOS Build with Plugin: Google VR enabled will STILL (Bug since 2017) Crash upon launcher on iOS Devices when On Shipping+Distribution…

[anonymous_user_0b7a2a98]

The new mesh format is structured internally so that modifications can be made in real-time, even to the most complicated meshes. This forms the basis of a work-in-progress mesh editing feature, which is also scriptable, that will be developed for a future release.
[/QUOTE]

i’m just waiting for this release T~T

[DamirH]

Congratulations, but as per usual, the most important changes only get a footnote. Let’s take a looksie…

New: Support for writing specific log channels to their own files. Command line usage is as follows, including quotation marks: -LogCategoryFiles=“Category1=Filename1, Category2=Filename2”
New: Allocator (TNonRelocatableInlineAllocator) which eliminates conditional logic from GetAllocation(), at the expense of not being trivially relocatable. This provides a significant performance increase for allocators that are dereferenced frequently, but prevents instances of it being stored inside other allocators (which are expected to be trivially relocatable by default).
New: Added support for importing grayscale PSD images.
New: Added the option to close tabs to the right of the active tab.
New: Radial Damage multicast delegate has been added to Actor and is consistent with Point Damage.

That allocator thing is huge, I’m surprised it isn’t getting more love.

Edit - And of course this:

New: Added a new type of Gameplay Tag called Restricted Gameplay Tag. At runtime, it behaves exactly the same as normal Gameplay Tags, but in the editor, it allows for more control of higher level tags while still leaving flexibility for more specific tags. Restricted gameplay tags are intended for larger projects that want to be able to enforce a high level hierarchy on their tags while still allowing full control and flexibility over lower levels of the tag structure.

[wilberolive]

Just upgraded a project to 4.20 and now I get about 40 of these warning messages every time I open the project. Doesn’t happen on the 4.19 project.

Attempting to load an instance of a transient class from disk - Package:'../../../../../../Users/User/Documents/Unreal Projects/MyProject 4.20/Content/Maps/Test.umap'  Object:'EnvQueryManager_0'  Class:'/Script/AIModule.EnvQueryManager'

Any ideas?

[muchcharles]

I get this when running .\GenerateProjectFiles.bat -2017 :

PS E:\git\UnrealEngine> .\GenerateProjectFiles.bat -2017
Setting up Unreal Engine 4 project files...
Binding IntelliSense data... 0%E:\git\UnrealEngine\Engine\Plugins\Runtime
Display\Source\DisplayCluster\DisplayCluster.Build.cs: warning: Referenced directory 'E:\git\UnrealEngine\Engine\Plugins\Runtime
Display\ThirdParty\VRPN\Include' does not exist.
100%
Writing project files... 100%

Is that ThirdParty directory something that Setup.bat should have pulled in? Setup.bat didn’t report any errors.

Edit:

the directory did exist, but had a different capitalization. I was able to run GenerateProjectFile.bat without the warning by renaming E:\git\UnrealEngine\Engine\Plugins\Runtime
Display\ThirdParty\Vrpn to E:\git\UnrealEngine\Engine\Plugins\Runtime
Display\ThirdParty\VRPN .

edit2:
For people running into it it seems to be either an issue with a windows update to WSL:

.com/Microsoft/WSL/issues/2937

If you do a git checkout it seems to set a case sensitivity flag on any created folders now. This is only an issue if you are using WSL (Windows Subsystem for Linux) to do the git checkout. They have changed it to have this case sensitivity stuff by default all of the sudden.

solution is:

set /etc/wsl.conf to:

[automount]
options=case=off

[SRombauts]

Awesome, a few more merge request I made were integrated in 4.20:

A few improvements to the Git Plugin:

• Git Plugin: configure the default remote URL ‘origin’ #4434](.com/EpicGames/UnrealEngine/pull/4434)
• Git Plugin: replace usage of the 2 cli args “–work-tree” and “–git-dir” by “-C” (fix LFS under Linux) #4431](.com/EpicGames/UnrealEngine/pull/4431)
• Git Plugin: fix crash on commit error #4650](.com/EpicGames/UnrealEngine/pull/4650)

And for more general Source Control Quality of life:

• Source control History Window: enlarge column Description #4665](.com/EpicGames/UnrealEngine/pull/4665)

But also, in other area of the Editor:

• [Editor UI] Add C++ Class dialog: set keyboard focus and handle Escape & Enter #4565](.com/EpicGames/UnrealEngine/pull/4565)
• [Editor UI] Pick Parent Class dialog: set keyboard focus and handle Escape & Enter #4567](.com/EpicGames/UnrealEngine/pull/4567)

Cheers!

[mdeni]

Engine crashed at startup

Access violation - code c0000005 (first/second chance not available)

UE4Editor_Engine!USkyLightComponent::UpdateSkyCaptureContentsArray() [d:\build\++ue4\sync\engine\source\runtime\engine\private\components\skylightcomponent.cpp:564]
UE4Editor_Engine!USkyLightComponent::UpdateSkyCaptureContents() [d:\build\++ue4\sync\engine\source\runtime\engine\private\components\skylightcomponent.cpp:632]
UE4Editor_UnrealEd!UEditorEngine::Tick() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\editorengine.cpp:1619]
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\unrealedengine.cpp:403]
UE4Editor!FEngineLoop::Tick() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launchengineloop.cpp:3495]
UE4Editor!GuardedMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launch.cpp:166]
UE4Editor!GuardedMainWrapper() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:144]
UE4Editor!WinMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:223]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:283]

ntdll

In this place:

http://dev.rionix.com/images/ue_question_090.png

[Mellnik]

Just trying out the new Proxy LOD. When generating Hierarchical LODs my CPU is only used about 8%.
Shouldn’t there be a higher CPU usage to generate the LODs faster?

i9 7980XE
64GB
GTX 1080 Ti

Edit:
After another 30 minutes it’s still at 74%. It appears to be frozen. Thought this would be production-ready. Very disappointing.

[Vermilion_Wlad]

I’m getting “…: Can’t find file for asset. /Script/EnvironmentQueryEditor” and my EQS queries are (logically) just Data Assets, but the EQSTester and BT tasks seem to work, and the EQS is out of the plugins list completely. Is it considered not experimental anymore, but the Query Editor got lost somewhere?

[Elvince]

@DamirH

Edit - And of course this:

New: Added a new type of Gameplay Tag called Restricted Gameplay Tag. At runtime, it behaves exactly the same as normal Gameplay Tags, but in the editor, it allows for more control of higher level tags while still leaving flexibility for more specific tags. Restricted gameplay tags are intended for larger projects that want to be able to enforce a high level hierarchy on their tags while still allowing full control and flexibility over lower levels of the tag structure.

…
I didn’t really understant the purpose of this? Could you elaborate?

[CarloAlt (Calter)]

Unreal Engine 4.20 delivers on our promises to give developers the scalable tools they need to succeed.

Do you mean hardware scalability?
Is it now possible to use the full power of two GTX 1080 ti in SLI mode? (FPS increase)

[SteveElbows]

Is it my eyes or did you forget to mention Volume Texture Asset support in the release notes?

[Zeblote]

@SteveElbows

Is it my eyes or did you forget to mention Volume Texture Asset support in the release notes?

There are a lot of things missing… RichTextBlock is no longer experimental, a bunch of other more specific UMG widgets were added, new profiling tools/integrations, …

[CyberAlien]

Hello, I tested the new node “Read Render Target Pixel” but it is very slow, it is possible that the node use too much access to the render target, it might be good to make another node that uses an array in input and output, this would allow to make a single access to the render target and to work only a variable without making several call.

Proposal of a new node: “Read render target pixel array”

input:

• Render Target 2D
• 2D array int

output

• array color RGBA

Single render target access, and single conversion to 2D texture.

[anonymous_user_41845f4a]

Just want to confirm, is it intentional that all plugins must now specify full relative include paths for headers of modules in PublicDependencyModuleNames? From reading the changelist it seems this was done internally for engine modules, but it wasn’t mentioned that plugins will need to be updated.

Hello ,

I encountered this during the previews as well and asked ahead of time; This is intended. To avoid needing to use the full path, you can use the following format for your includes:

PublicIncludePaths.Add(Path.Combine(ModuleDirectory, “Public”));

[Naifu]

-New: Curve Atlases in Materials
Does anyone else have a problem with “Curve Atlas Row Parameter” that is used in a material function that is used in another material function which is finally used in a material? Opening such material crashes the editor for me.

[Shadow.Storm]

@Naifu

-New: Curve Atlases in Materials
Does anyone else have a problem with “Curve Atlas Row Parameter” that is used in a material function that is used in another material function which is finally used in a material? Opening such material crashes the editor for me.

Yes, the fix for a curve atlas inside a material function crashing missed the 4.20 release, but it will be in the first hotfix. In the meantime, curve atlas row parameters should work in all cases except nested in a function.

Thanks!

[darinsmyth]

Can you confirm that as of 4.20 you need High Sierra 10.13.5 minimum to run it on OSX?