Adding custom assets
From KK's Wiki
Adding new flats
To add new available color combination to the PK3 structure:
- Open dread/textures-new.txt in text editor
- Add desired flats into "gfxgroup Flats" similarily as existing.
e.g. "flat FOOBAR 2:3 1:2@128" means to add flat texture FOOBAR being a dithered mix of colors 2 and 3 in full ight, and colors 1 and 2 at light level 128. - In the tool switch to "Textures" tab and click "PK3" to rebuild the PK3 structure.
- Close and reopen Doom Builder 2.
- Your new flat should be available now.