UiCorner vs Rounded image

[Snow_Lober (System)]

Basically,I am now using UiCorner to round the ui cuz I am lazy.
I want to ask if too many “UiCorner” will make the game lags.
Is it better to use a Rounded image instead of UiCorner?

[Kostiskat (kostis)]

Not really. The UI corner just helps you round labels and images, and have minimal to no impact to your game’s performance. I would suggest using that instead of rounded images because you can customize the UI corner to how steep you want the corner to be.

[p49p0 (ganteng)]

if you use a rounded image, then you scale it will mess up.

[kingerman88]

@0xabcdef1234

UICorner:

Pros

• Could apply to a viewport frame / image asset
• Scriptable corner radius which can be dynamic.

Cons

• Has a performance overhead (Screen Space specifically) as it needs extra processing on each pixel, while 9 slice just involve simple sampling.

9-slices:

Pros

• Suitable for highly decorative borders that are not just rounded.
• If you have a lot of rounded rectangle with solid color and you pay special attention to low-end devices, using 9-slice would be more perf-efficient.

Cons

• Hard to apply to existing image assets.
• For different corner sizes, it requires different assets.

from the UI corner post.
Unless your goal is mega optimization though, UI corner is probably fine. Like if you have 200+ UI corner elements, then maybe consider rounded images

[synical4 (Synical)]

I’ve been using UICorner instead of rounded images and have literally seen no performance issue or difference, even with a lot of them.