UE4 Texture Validator Plugin

A plugin that validates settings for texture assets in Unreal Engine 4.

What can it do?

• Throw errors when texture size, texture group and other properties do not match customizable rules.
• Automatically set default values for new textures upon import.
• Set different validation rules for textures with different prefixes, or for different folders within Unreal.
• Throw errors when users import textures without setting the Data Source Folder in their Editor Settings.
• Throw errors when UPROPERTY() values are not set.
• Run all rules and validate assets from command-line

Usage

Once installed, open Project Settings > BUI Validator.

Here you can set up validator groups, that consist of match conditions and rules to be applied to those matches.

Settings

Match Conditions

For a rule to be triggered, all conditions of the match must pass.

• Texture groups: Match textures with any of the texture groups.
• Prefixes: Match textures with any of the asset name prefixes.
• Paths: Match textures in any of the asset directories.

Validator Rules

Each rule allows multiple values for a given setting. For example a texture could be allowed to be within World or UI. To pass, the asset must match any of the values.

• Texture groups: Textures must have one of the specified Texture Groups.
• Compression Settings: Textures must have one of the specified Compression Settings.
• Pixel Formats: Textures must have one of these Pixel Formats
• Mip Gen Settings: Textures must have one of these Mip Gen Settings
• Prefixes: Textures must have one of these prefixes.
• Texture Size: Textures must pass these size requirements. Size requirements are "Multiple of Four" or "Power of Two"
• Paths: Textures must be within this path in Unreal.
• Require Data Source Folder: Require that the Data Source Folder be set in Editor Preferences, and that assets are imported from there. This is to aid reimporting between team members.

Auto-apply settings to new textures

Validator Groups have an Apply On Import option. When checked, any newly-imported assets that match the group will have some rules automatically applied to them.

Prefix, Texture Size and Path rules are not applied on import.

C++ UPROPERTY() Settings

The plugin also supports making UPROPERTY properties required.

// If this is not set, the BP will show an error on save
UPROPERTY( EditAnywhere, meta = ( BUIRequired = "true" ) )
TSubclassOf<AActor> RequiredActor;

Running Validation

Whenever UTexture2D asset is saved, the rules in Project Settings are applied. If the asset does not pass, an error is shown.

Command-line Validation

This is useful when validating assets as part of a build process.

"C:\Program Files\Epic Games\UE_5.0EA\Engine\Binaries\Win64\UnrealEditor-Win64-DebugGame-Cmd.exe" -run=BUIValidateAll

Installation

1. Download the zip or clone the Github repository into YourProject/Plugins/BUIValidator/
2. Add the following to the end of your .uproject file, inside the { }

	"Plugins": [
		{
			"Name": "BUIValidator",
			"Enabled": true
		}
	]

License

CC0

Contact

If you find it useful, drop me a line @_benui on Twitter.

benui.ca

Future Work

• Add support for validating builds using the Data Validation plugin