Luoshuang’s GPULightmass Unreal Engine 5.4.3 and 5.4.4 patch

Announcement of Luoshuang’s GPULightmass (LGPU) 5.4 as downloadable Preview BINARY.

Update the original was deleted by someone as “Anyone Can Edit” was left on the share setting and some un charitable person deleted so the link is now updated to the SAME archive, just the link is set to Anyone can view

Looking for Luoshuang’s GPU 5.3.2 binary patches Announcement

UPDATE: Recent feedback indicated that this will only work on Windows 10

Epic Games Launcher must have been downloaded and installed

NOT Windows 11 due path conflict errors in template files

Further Windows 11 contains Direct X Ultimate 12 Drivers which cause crashes in ALL versions of UE4 and up to UE5.3.

These problems ONLY fixed in Windows 11 22H2 or higher at least and Unreal 5.4.1 production binary dated (29th April 2024).

NOTE NEW LICENCING requirement for Production BINARY and Release software updated and described on 1st May 2024, for non-games users like the ArchViz community for 5.4 onward

This version is not affected by licensing as its based on 5.4
If you can afford a RTX 30XX or 40XX you can afford a Windows 10 licence, for Multi version boot. even works on Windows 10 Home.

This has, after some 260 hours or more of work, finally been achieved.

The whole package is just over 27 Gigabytes in WinRAR format.

Uses Microsoft One Drive for public uses, not GitHub which is limited to binary to 2GB.

Installation instructions
You must first have the
Download the Epic Games Launcher From the Epic Games Store
installed, without this you will get obscure confusing errors when to run the LGPU 5.4 BINARY.

Download from
OneDrive LGPU 5.4 binary LocalBuilds.rar

If you have problems downloading, then send me a private message and I will send a personal link.

This will download from a Microsoft site and your Windows 10 always works.

Windows 11 system will challenge you to continue downloading and WONT WORK.

When the download which is called “LocalBuilds.rar” has been completed

  • *Make a directory path C:\Users\Owner\source\repos*

The “Owner” is replaced with your username.

Go into the download Directory Right Click on “LocalBuilds.rar”. Select “Open with WinRAR”

When WinRAR opens there is a check on file integrity and in the Status-bar is the size of the archive.

If there is an error, you will need to reload the whole archive again.

Click on “Extract to” and in the picture click the + to open each directory to the

“Directory path C:\Users\Owner\source\repos\” Then Click “OK”

Open Windows File Explorer and navigate to

C:\Users\Owner\Source\Repos\LocalBuilds\Engine\Windows\Engine\Binaries\Win64

The “Owner” is replaced with your username.

Find the file “UnrealEditor.exe” and right-click and Select “Send to” then Select “Desktop (create Shortcut)”

On the Desktop right-click and Select “Rename” Replace with “LGPU 5.4 BIN UnrealEditor”

Double click on the icon just made “LGPU 5.4 BIN UnrealEditor”.

The LGPU 5.4 Binary will start the Shaders have already been compiled.

Download the test project

BUG-Lumen_shadows_dissapear 5.4.rar

Right-click and extract the example test

In LGPU 5.4 UE Editor click Recent then click Browse the extracted location. This should open without the need for shader compiling.

Follow the instructions for setting up Swarm for Local Processing in the post

Swarm Setup for local LGPU Processing

In the UE file menu Build → Build Lighting

If you are wondering where the Progress bar has gone it’s in a separate download

ProgressBar.rar

In Windows Explorer browse to extract to C:\Users\Owner\Source\Repos\LocalBuilds\Engine\Windows

Use WinRAR to extract LGPUprogress.rar

The file should be found in

C:\Users\Owner\Source\Repos\LocalBuilds\Engine\Windows\Engine\Binaries\DotNET\ProgressReporter.exe

When setting up a new project remember to follow the documentation in

GPU Lightmass Global Illumination

The reason why this was made

Many months ago, some people asked for a BINARY version of Luoshuang’s GPULightmass referred to as the LGPU code.

The requirements were:-

Compiled with the latest version of the UE source code.

LGPU source code was added as the standard Lightmass builder.

LGPU could run in the background.

LGPU Progress reporter is optional because some build takes many hours and is distracting.

Therefore, the UE Editor Screen looks like a CPU Lightmass build.

The installation would be easy, and the download would be relatively small compared to the version built from the source code.

The WinRAR new compression is from 76GB to 27GB, with an amazing binary compressor.

Download times vary but mine averages about 70 minutes.

Many years ago, I bought a personal licence for WinRAR for use on 5 Windows 10 PC with lifetime updates from

https://www.win-rar.com/start.html?&L=0

You can use the free version with 22-language support.

WinZip delivers a 56GB package and took far slower longer to pack and compress.