2D MSAA breaks rendering.

[SaracenOne]

Tested versions

e2c6daf

System information

Godot v4.4.dev (65f3df5) - Windows 10.0.22631 - Single-window, 2 monitors - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 4090 (NVIDIA; 32.0.15.6094) - AMD Ryzen 9 7950X 16-Core Processor (32 threads)

Issue description

Bisected to e2c6daf
Running a project with any 2D MSAA setting will cause the screen rendering to break as demonstrated in this screenshot

(2D MSAA 2x)

(2D MSAA 8x)

It can be observed on Forward+ and Mobile renderers, but does not appear to affect the Compatibility renderer.

Steps to reproduce

• Open a project
• Set any 2D MSAA render setting in the project settings.
• Restart the editor

Minimal reproduction project (MRP)

N/A

[DarioSamo]

Can confirm the regression on Mac as well, and it presents itself as the 2D elements being semi-transparent. Haven't determined yet where the actual difference shows up however.

[DarioSamo]

I've spotted the issue, will make a PR soon.

[DarioSamo]

#97811 fixes the issue for me, could you please confirm if it does for you as well?