Strange texture glitch with Punch Out wii

[hugepanicbuilder]

I tried booting up punch out wii. I got a warning saying anti aliasing was enabled for Dolphin, and I had to turn it off in my GPU's settings. I turned it off, and booted up the game again.
Once the game was on, I got this:

How do I fix this? Is this known? I couldn't find anyone else with the same problem on Google or here.

Edit: I fixed it by switching from OpenGL to Direct3D 12

[KHg8m3r]

Is this the D3D backend? Try the OpenGL backend

[hugepanicbuilder]

Is this the D3D backend? Try the OpenGL backend

It was actually OpenGL, I switched to D3D and it worked