NVIDIA GameWorks Integration

[Raph74]

Is it still possible to get flex on UE4.23? With all the changes made to the physics and the addition of chaos etc..
I am not interested in the fluid rendering, only the particles for meshes to get soft bodies.

If possible, is anyone planning on doing the port to 4.23 ^^'?

[samrat333]

how to build Houdini plugin in game work

[TrinityMS]

Hello 0lento

We are creating a «TrinityMS» game using Unreal Engine 4.21 with GameWorks from you.
We met a problem that HairWorks reflect light from point light. The hair makes everything around it much lighter when there is a point light.
The problem doesn’t exist in UE4.19. But for creating the game we need to use UE 4.21 (or later) that makes hair to light.

Here is a video about this problem

https://trinityvideogame.com/TrinityMS-UE_4_21.mp4

Would appreciate greatly if you could help us to solve this problem.
Thank you

[TankbusterGames]

Hey, i have some troubles packaging the official 4.19.2 flex branch.
I've build it with VS2015, everything working smooth, but when i package it, it has some errors:

[....]

D:\Flex\UnrealEngine\Engine\Plugins\GameWorks\Flex\Source\Flex\Classes/FlexFluidSurfaceActor.h(11): error C2504: 'AInfo': base class undefined
D:\Flex\UnrealEngine\Engine\Plugins\GameWorks\Flex\Source\Flex\Classes/FlexFluidSurfaceActor.h(12): error C3646: 'Super': unknown override specifier
D:\Flex\UnrealEngine\Engine\Plugins\GameWorks\Flex\Source\Flex\Classes/FlexFluidSurfaceActor.h(12): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
D:\Flex\UnrealEngine\Engine\Plugins\GameWorks\Flex\Intermediate\Build\Win64\PW_TopLessBell\Inc\Flex\FlexFluidSurfaceActor.gen.cpp(63): error C2039: 'StaticConfigName': is not a member of 'AFlexFluidSurfaceActor'
D:\Flex\UnrealEngine\Engine\Plugins\GameWorks\Flex\Source\Flex\Classes/FlexFluidSurfaceActor.h(10): note: see declaration of 'AFlexFluidSurfaceActor'
D:\Flex\UnrealEngine\Engine\Plugins\GameWorks\Flex\Intermediate\Build\Win64\PW_TopLessBell\Inc\Flex\FlexFluidSurfaceActor.gen.cpp(63): error C3861: 'StaticConfigName': identifier not found
D:\Flex\UnrealEngine\Engine\Plugins\GameWorks\Flex\Intermediate\Build\Win64\PW_TopLessBell\Inc\Flex\FlexFluidSurfaceActor.gen.cpp(63): error C2039: 'AddReferencedObjects': is not a member of 'AFlexFluidSurfaceActor'
D:\Flex\UnrealEngine\Engine\Plugins\GameWorks\Flex\Source\Flex\Classes/FlexFluidSurfaceActor.h(10): note: see declaration of 'AFlexFluidSurfaceActor'
D:\Flex\UnrealEngine\Engine\Plugins\GameWorks\Flex\Intermediate\Build\Win64\PW_TopLessBell\Inc\Flex\FlexFluidSurfaceActor.gen.cpp(63): error C2065: 'AddReferencedObjects': undeclared identifier
D:\Flex\UnrealEngine\Engine\Plugins\GameWorks\Flex\Intermediate\Build\Win64\PW_TopLessBell\Inc\Flex\FlexFluidSurfaceActor.gen.cpp(63): error C3083: 'Super': the symbol to the left of a '::' must be a type
D:\Flex\UnrealEngine\Engine\Plugins\GameWorks\Flex\Intermediate\Build\Win64\PW_TopLessBell\Inc\Flex\FlexFluidSurfaceActor.gen.cpp(63): error C3083: 'WithinClass': the symbol to the left of a '::' must be a type
D:\Flex\UnrealEngine\Engine\Plugins\GameWorks\Flex\Intermediate\Build\Win64\PW_TopLessBell\Inc\Flex\FlexFluidSurfaceActor.gen.cpp(65): error C2614: 'AFlexFluidSurfaceActor': illegal member initialization: 'Super' is not a base or member

[....]

D:\Flex\UnrealEngine\Engine\Source\Runtime\Engine\Private\Materials\MaterialExpressions.cpp(2548): warning C4996: 'UEnum::GetEnumName': GetEnumName is deprecated, call GetNameStringByIndex instead Please update your code to the new API before upgrading to the next release, otherwise your project will no longer compile.
D:\Flex\UnrealEngine\Engine\Source\Runtime\CoreUObject\Public\UObject/Class.h(1808): note: see declaration of 'UEnum::GetEnumName'

[....]

ERROR: UBT ERROR: Failed to produce item: D:\Flex\UnrealEngine\Engine\Plugins\GameWorks\Flex\Binaries\Win64\PW_TopLessBell-Flex-Win64-Shipping.lib

Is there a nice workaround here? Can i just somehow delete the "AFlexFluidSurfaceActor" ? I'm pretty new to C++ so this gives me much headaches, the more i do, the more i break.

Or is there a stable Version (maybe 0lentos) that allows to package the game without modification?
I couldn't build 0lentos version on the first try, i think it's because of my VS2015,2017,2019 mishmash. 2015 and 2019 are working, but 2017 seems to be very buggy.....

If it should work, I'll do everything I can to migrate to a better version, but atm I'm not sure about it... help pls

[0lento]

Hey, i have some troubles packaging the official 4.19.2 flex branch.
I've build it with VS2015, everything working smooth, but when i package it, it has some errors

This is a known issue with the nvidia's own branch, I have fixes for it here (I should probably just rename the branch to 4.19-FleX as it doesn't look like Nvidia is merging my PR for the fixes):
https://github.com/0lento/UnrealEngi...PR-FleX-4.19.2

Actual PR here: https://github.com/NvPhysX/UnrealEngine/pull/523

Basically you can just use that PR-FleX-4.19.2 branch as is, it only contains UE 4.19.2 and Nvidia FleX or alternatively copy the fixes over manually, all changes are in 3 commits.

[0lento]

We met a problem that HairWorks reflect light from point light. The hair makes everything around it much lighter when there is a point light.
The problem doesn’t exist in UE4.19. But for creating the game we need to use UE 4.21 (or later) that makes hair to light.

That looks alarming I didn't make the HairWorks port initially myself so I have to recheck the changes to see what could have possibly made the difference. Is this simple to repro using stock hairworks samples?

[TrinityMS]

That looks alarming I didn't make the HairWorks port initially myself so I have to recheck the changes to see what could have possibly made the difference. Is this simple to repro using stock hairworks samples?

Today I will check the standard hairstyles. I will write here later.
Thank you so much!

[WindyStrife]

@0lento: Compie Gamework 4.21 + Wavework with TrueSky Plugin give me this error, i tried it with source build 4.21.2 from epic games and it can complie,
How can I fix it?? If you can let me know, thank you!

2>  [1/1] UE4Editor-TrueSkyPlugin.dll
2>     Creating library K:\UnrealEngine-4.21 (2)\Engine\Plugins\TrueSkyPlugin\Intermediate\Build\Win64\UE4Editor\Development\TrueSkyPlugin\UE4Editor-TrueSkyPlugin.suppressed.lib and object K:\UnrealEngine-4.21 (2)\Engine\Plugins\TrueSkyPlugin\Intermediate\Build\Win64\UE4Editor\Development\TrueSkyPlugin\UE4Editor-TrueSkyPlugin.suppressed.exp
2>Module.TrueSkyPlugin.cpp.obj : error LNK2019: unresolved external symbol "public: void __cdecl FD3D12CommandListHandle::AddUAVBarrier(class FD3D12Resource *)" (?AddUAVBarrier@FD3D12CommandListHandle@@QEAAXPEAVFD3D12Resource@@@Z) referenced in function "public: static void __cdecl FD3D12DynamicRHI::TransitionResourceWithTracking(class FD3D12CommandListHandle &,class FD3D12Resource *,enum D3D12_RESOURCE_STATES,unsigned int)" (?TransitionResourceWithTracking@FD3D12DynamicRHI@@SAXAEAVFD3D12CommandListHandle@@PEAVFD3D12Resource@@W4D3D12_RESOURCE_STATES@@I@Z)
2>K:\UnrealEngine-4.21 (2)\Engine\Plugins\TrueSkyPlugin\Binaries\Win64\UE4Editor-TrueSkyPlugin.dll : fatal error LNK1120: 1 unresolved externals
2>UnrealBuildTool : error : UBT ERROR: Failed to produce item: K:\UnrealEngine-4.21 (2)\Engine\Plugins\TrueSkyPlugin\Binaries\Win64\UE4Editor-TrueSkyPlugin.dll
2>                        (see ../Programs/UnrealBuildTool/Log.txt for full exception trace)
2>Total build time: 73.57 seconds (Parallel executor: 0.00 seconds)
2>C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\IDE\VC\VCTargets\Microsoft.MakeFile.Targets(44,5): error MSB3075: The command "..\..\Build\BatchFiles\Build.bat UE4Editor Win64 Development -WaitMutex -FromMsBuild" exited with code 5. Please verify that you have sufficient rights to run this command.
2>Done building project "UE4.vcxproj" -- FAILED.

[TrinityMS]

Is this simple to repro using stock hairworks samples?

Yes.
I checked. This problem with stock hairworks samples too.

We really hope for your help.
Thank you so much.

[0lento]

WindyStrife I don't think I have active access to TrueSky anymore but step one in trying to solve that would be to see where this function actually is now:

 error LNK2019: unresolved external symbol "public: void __cdecl FD3D12CommandListHandle::AddUAVBarrier(class FD3D12Resource *)"

[fabito rychter]

0lento - I've got a very basic merge of HairWorks into 4.23, it needs some more massaging particularly in terms of replacing calls to SetRenderTarget with BeginRenderPass/EndRenderPass and maybe a couple of other things before it'll start compiling all the way. Are you interested in taking a look if I set it up on a github branch? We can probably look at xoyojank's Flex 4.22 to get some ideas there.

Maybe collaborate on it.

So it is possible!

Have you made any progress? I have a project using hairworks on 4.21 and would love to update it!

[dustimusprime]

I know that we can use the GameWorks branches in commercial games, but I'm wondering about attribution and licensing fees/royalties. I am a developer, but going out on my own now. With all of the different licenses and such involved, what must I know so that I am compliant when I reveal, advertise, raise funds for, and release, etc.. my game? Thanks in advance.

Posted this in the issues list on github, but though maybe it's more appropriate to ask here.

[upstream99]

Is there a way to make HairWorks work in UE 4.22 or UE 4.23?

[Jesse Clark]

Is there a way to make HairWorks work in UE 4.22 or UE 4.23?

i'm interested in 4.23 build too :\

[samrat333]

where is compile source of hairworks 4.23 or 4.24 official because epic give shave plugin for hairworks this https://github.com/EpicGames/Shave-And-A-Haircut