Custom 9-slice border

[oobartez]

The built-in suport for 9-slice backgrounds/borders does not support any form of tiling / adaptive sizing. So we would like to create our own custom control. What we can’t figure out is how do you do repeated / tiled background?

According to other thread it is not yet possible, but here it says that it should be doable with “custom mesh API”:

UI Builder issues in 2019.4.1f1

Hi team, For a new project I've been working with the newly released UI Builder package to build a test menu UI. I am a designer and not a programmer, but I have lots of experience with CSS which makes life a bit easier - however, I tried to build this exclusively with the UI Builder tool. Below are a few very consistent and reproducible bugs/problems I wanted to share in hopes of helping the team improving the tool. I am not entirely sure which of these have been already reported, but many…

@uDamian 6 months since that original discussion, is that still the only way to do background tiling? Could you give us more details how it can be done?

[oobartez]

For the record, you can find our implementation in this thread:

Custom 9-slice background implementation

We are currently migrating our game to UI Toolkit and as part of the process we had to create a custom implementation of a 9-slice background. The current built-in 9-slice support is too limited, or outright unusable because it makes an assumption that a single pixel on the texture will be rendered as a single pixel on the screen. That isn't true in most scenarios when you allow users to scale their UI or when you want to support HiDPI / retina screens. The built-in functionality also doesn't …