Paint.NET TEX Plugin

Load and save League of Legends .tex texture files in Paint.NET 5.1+

Features

• Seamless installation wizard, includes Tex Previews in the installer.
• Easy uninstall through the wizard.
• Load DXT1, DXT5, and BGRA8 texture formats.
• Auto detect the compression, mipmaps and saves acordingly.
• Second saving option with a menu to manually pick the compression, error diffusion dithering and mipmap generation.
• Fast DXT compression/decompression using native C#.
• Great error diffusion dithering quality.
• Full alpha channel support.

Requirements

• Paint.NET 5.1 or later (.NET 9)
• .NET 9.0 SDK (for building)
• Windows 10 or later

Installation

Wizard Installation (RECOMMENDED)

1. Close Paint.NET
2. Run Tex Plugin Installer.msi and follow the installation wizard
3. Finish the installation with the wizard and start Paint.NET

• Note! Windows Explorer will restart to apply the changes if you select the Tex File Preview during the installation.
• Portable version note! If you have the portable version of Paint.NET you will need to install the plugin using the manual installation.

Manual Installation

1. Close Paint.NET
2. Open C:\Program Files\Paint.NET\FileTypes
3. Paste TexFileType.dll from the releases into this folder
4. Start Paint.NET

• Note! This method doesn't include the Tex File Previews, if you want them please go to TexThumbnailProvider and follow the instructions.
• Portable version note! In order to install the plugin on the portable version of Paint.NET please paste the dll file into [Paint.NET folder]\FileTypes

Usage

Opening TEX Files

• File → Open → Select your .tex file
• Drag and drop .tex files into Paint.NET

Saving TEX Files

1. File → Save As
2. Choose "League of Legends TEX" from the file type dropdown

Saving TEX Files with customizable settings

1. File → Save As
2. Choose League of Legends TEX (with options) from the file type dropdown

Troubleshooting

Paint.NET crashes or the file doesn't load

• Make sure you're running the 5.1.11 (latest) version of Paint.NET

Plugin doesn't appear in Paint.NET:

• Make sure Paint.NET is completely closed
• Check the FileTypes folder exists: C:\Program Files\Paint.NET
• Verify TexFileType.dll is in the FileTypes folder

"There was an error while saving the file." error when saving:

• Make sure that the dimensions of the file are divisible by 4. This is a requirement for it to work in League.

Credits

Uses LtMAO's tex reading logic. Thanks to Tarngaina.

• GitHub: https://github.com/tarngaina/LtMAO

Bbundled thumbnail provider is made by GuiSai.

• GitHub: https://github.com/GuiSaiUWU

Compression and Error Diffusion Dithering Logic

• BC1/BC3 compression with Floyd-Steinberg dithering is based on Microsoft DirectXTex (MIT License).