bevy/crates/bevy_ui
Mike cef31ffdd9
Fix various bugs with UI rounded borders (#13523)
# Objective

- Fixes #13503 
- Fix other various bugs I noticed while debugging above issue.

## Solution

- Change the antialiasing(AA) method. It was using fwidth which is the
derivative between pixels, but there were a lot of artifacts being added
from this. So just use the sdf value. This aa method probably isn't as
smooth looking, but better than having artifacts. Below is a
visualization of the fwidth.

![image](https://github.com/bevyengine/bevy/assets/2180432/4e475ad0-c9d0-4a40-af39-5f4422a78392)
- Use the internal sdf for drawing the background instead of the
external sdf and extract the border for these type of nodes. This fixed
2 bugs, one with the background coloring the AA pixels on the edge of
rounded borders. And also allows for the border to use a transparent
color.
- Don't extract borders if all the widths are zero.

## Testing

- played a bunch with the example in the linked issue.
This PR:

![image](https://github.com/bevyengine/bevy/assets/2180432/d7797e0e-e348-4daa-8646-554dc2032523)
Main:

![image](https://github.com/bevyengine/bevy/assets/2180432/4d46c17e-a12d-4e20-aaef-0ffc950cefe2)

- ran the `borders` and `rounded_borders` examples

---

## Changelog

- Fixed various antialiasing issues to do with rounded ui borders.

---------

Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: Andreas Weibye <13300393+Weibye@users.noreply.github.com>
2024-05-27 17:42:13 +00:00
..
src Fix various bugs with UI rounded borders (#13523) 2024-05-27 17:42:13 +00:00
Cargo.toml Upgrade to Taffy 0.4 (#10690) 2024-04-30 14:13:17 +00:00
README.md Add README.md to all crates (#13184) 2024-05-02 18:56:00 +00:00

Bevy UI

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