[UV Packing - Border Padding?]

CT007

For UE4, and "general use", does there need to be any pixel/edge padding between borders and the UVs? I've looked at the wiki guide, and "tutorials", but did I miss the part about borders..?

Thanks, bros!  

Eric Chadwick

Depends on how you use the textures. If the textures are not authored to tile well, and you do not set the tile mode to Clamp (see http://wiki.polycount.com/wiki/Texture_Coordinates#UV_Address_Modes), then yes you need the space on your borders as well.

CT007

Eric Chadwick said:

Depends on how you use the textures. If the textures are not authored to tile well, and you do not set the tile mode to Clamp (see http://wiki.polycount.com/wiki/Texture_Coordinates#UV_Address_Modes), then yes you need the space on your borders as well.

So, (UV shell) edge padding for your resolution(8px @ 1024x1024) = border padding needed, for custom/non-tiling textures?

Eric Chadwick

Best way to find out is to make a test texture, put it in your game engine, and see where it breaks down. Put a contrasty color in the gutters (minus the padding). Back away from your model and see when the seams start to appear.