Godot rough edges

Question

I have found that the edges of my cube in Godot look very rough, like a poorly rendered circle. Here is an image of what I mean:

When I created this in Unity, I had smooth edges:

Why are edges in Godot so rough? Is there a setting I can change to make them smooth like Unity?

Answer 1

Edge roughness in computer graphics is solved via anti-aliasing.
In Godot, you can set rendering quality at the project level in the project settings screen under Rendering>Quality>Filters>MSAA

This is what a cube looks like at 16x MSAA with all the other settings at default:

Comments

Note that 16× MSAA is very slow and tends to be implemented by graphics drivers as 2× SSAA + 8× MSAA. This can cause various visual glitches down the line.

I'd recommend sticking to 2× or 4× MSAA most of the time.

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I used a ploygon2D and still with MSAA 16x, the borders for polygon is rough, what can I do for 2D? :(

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That's because MSAA onl works with 3D games. Please, take a look on this https://github.com/godotengine/godot/issues/12840
Hope it works!

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Yes it was a great link, thank you!