How to enable Chaos

So how stable is chaos beta?

I think it is more stable than 1st appearance of Niagara Beta, which is astonishing since it is probably way more complex. I decided to wait another iteration on the engine to experiment more with it, but what I saw gave me lots of ideas already.

That’s good to hear.
I am forced to keep going using PhysX but making BPs for runtime mesh swapping ready to add Chaos Geometry Collections and then disable the PhysX version. If UE 4.24 will have Chaos included with no need to compile from source I might start adding it to my project as long as the API won’t then change too much. I still got a lot of work to do but I hope to be able to complete my first game next year probably in the 2nd half (if anything goes wrong I would have to postpone again…being a solo developer with a very small budget I can’t do miracles unless a day started being 96hours+ here on Earth) and I will really need to have Chaos instead of PhysX for obvious performance reasons.

@DarkS474 I am quite sure Epic has great plans on applying Chaos on Fortnite aswel. For next gen console and PC it will work great and I am sure mobile devices will have no choice, but get even more powerful, so all fit into Fortnite purposes on expanding and getting new features. I don’t play Fortnite (never tried, but watched videos) but I am sure I will when they incorporate Chaos there, just to feel how it goes on different platforms.

Anyone else having a crash when trying to Generate Geometry Collection Asset?

Crash log breaks at D3D11Util.cpp “UE_LOG(LogD3D11RHI, Fatal,TEXT(”%s failed
at %s:%u
with error %s"),ANSI_TO_TCHAR(Code),ANSI_TO_TCHAR(Filename),Line,*ErrorString);" Line 249

This is on a Win7 machine, I saw one person having issues with Win7. Anyone able to get this system to work on a Win7 machine. Note I get the same crash log when trying to run the Chaos Destruction Demo, just fails to launch the project. My assumption is that there are created Geometry assets it’s trying to load as it happens around the same % of loading.

Is there any reason to get source for 4.23.1 and compile? Is the Chaos the same as 4.23?

So after moving chaos destruction demo inside ue4 directory and generating project files, should I build UE4 or only Chaos Destruction Demo solution?

chaos doesn’t work on my win 7 machine either. it always crashes when trying to generate geometry collection asset.

[File:/engine/Source/Runtime/Windows/D3D11RHI/Private/D3D11Util.cpp][Line:249]
Direct3DDeviceIMContext->Map(VertexBuffer->Resource,0,D3D11_MAP_WRITE_NO_OVERWRITE,0,&MappedSubresource)failed
at
File:/engine/Source/Runtime/Windows/D3D11RHI/Private/D3D11VertexBuffer.cpp:141
with error E_INVALIDARG

So I moved the chaos demo folder inside the ue4.23.1 folder (same one with engine,intermidiate etc folders). Ran generateproject.bat and opened the UE4.sln but there is no chaos demo listed ,only UE4?
I tried manually generating and building chaos VS solution and it shows UE4 on top and Chaos demo on bottom. So I built chaos successfully but it won’t open the ue4 editor.

Use 4.23. Chaos is not in 4.23.1. Waste of time.

Whaaat! 4.23.1 has no chaos at all?

So 4.23.1 does not have chaos but 4.23 does? Not sure what sense this is making. Did Epic pull back on Chaos beta?

Chaos is in 4.23.1, and the “how to” instructions works for both 4.23 and 4.23.1. Make sure you grab the correct branch on GitHub!

This is just ■■■■■■■■ and a stupid thing to say… Don’t listen to him. Chaos is in 4.23.1. and works fine!

-I dled the 4.23.1 release branch. Ran setup.bat.
-Downloaded chaos demo from the launcher.Copied the chaos folder into 4.23.1 folder which has folders named Engine,Intermidiate etc.
-Ran generateprojectfiles.bat . However, the UE4.sln file generated this way doesn’t list chaos project in solution window.
-I had to go into chaos folder, right-click on chaos’s uproj file and select generate visual studio files to creat chaos .sln file,opening which lists chaos project at bottom and UE4 project on top. I have tried building and running all three projects separately. (UE4 only, UE4+Chaosdemo, chaosdemo only)

  • I have built successfully ( 0 errors or warning) in VS2019 using the 14.22 toolchain( latest toolchain has some bug.). All builds crash at 79% except chaos-only solution which crashes on 100% but doesn’t launch the editor.

I did something very similar ** and Chaos did not function. So what did you do to get it to work??? Be explicit.**

Is chaos completely left out of launcher build or supported with some limitations?

Yes, it is totally missing.

You’re required to use a source build from GitHub until Chaos is out of beta.

@ If you’re having issues with VS2019, try VS2017: Visual Studio Older Downloads - 2019, 2017, 2015 & Previous Versions