Enlighten UE4 4.01 is based on Unreal Engine 4.27.0.

Enlighten UE4 is distributed as a collection of .zip files containing modifications to the base UE4 version. The distribution .zip files are named as follows:

EnlightenUE4-[Version]-[UE4 Version]-[Type].zip

Version is the version of Enlighten. This comprises:

the Enlighten version number
R denotes the initial release; Pn denotes patch n
the internal build number

UE4 Version is the version of UE4 this package is compatible with

Type may be:

Base — Required. This zip contains the modified engine files and the Enlighten libraries and tools.
Samples — This zip contains maps and assets demonstrating Enlighten, contained in EnlightenSamples.uproject.
Platform specific files — Extra files required to run on console platforms. These are provided only to registered platform developers.

For example EnlightenUE4-4.01.R.12345-UE4.27.0-Base.zip contains the Base files for the initial release of Enlighten UE4 version 4.01 compatible with UE4 version 4.27.0.

Enlighten license

The Enlighten Precompute requires a valid Enlighten license. Please place the license file in Engine/Binaries/ThirdParty/Enlighten.

Each licence file is valid for a limited period. For licensing support, contact Enlighten Support.

Build Enlighten UE4

To build the Enlighten UE4 editor:

Install an unmodified copy of a supported version of UE4. This must be the major release, not a hotfix.
Download the Enlighten packages compatible with your UE4 version.
Extract the Enlighten packages on top of your unmodified copy of UE4, overwriting files where necessary.
Delete the Engine/Intermediate folder, if it exists.
Run GenerateProjectFiles.bat.
Rebuild at least the following projects:
1. UnrealFrontend Development Win64
2. UnrealLightmass Development Win64
3. ShaderCompileWorker Development Win64
4. UE4 Development Editor Win64

To evaluate Enlighten with a hotfix release of UE4 you can perform a three way merge between:

Left: your UE4 source tree with the hotfix
Right: the base UE4 + Enlighten source tree.
Common Ancestor: the unmodified copy of UE4.

Supported Visual Studio versions

Visual Studio 2017 - MSVC 14.16

Visual Studio 2019 - MSVC 14.29

Supported console SDKs

	PS4	XboxOne	Switch	PS5	Xbox Series X	Stadia
UE4.27	8.500	July 2018 QFE13	12.3.2	3.000	April 2021 QFE 2	1.62

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