Currently i’m in need of a really terrain brush and a really large terrain brush (the WHOLE terrain, long story not going to explain). Is there any way to create/obtain custom brushes?
Save out your PNG with a transparent background (alpha) to a folder called “Gizmos” in the Assets folder of your project - so the directory structure is /Assets/Gizmos. Name your PNG’s brush_0.png, brush_1.png, etc. If the new brushes don’t show up in the Terrain Palette, restart Unity and they should show up.
References:
Can I Custom terrain’s brushes of unity?
Texture Terrain Brush