OpenGL renderer fails to render anything on Wayland+Qt 6

[autofire372]

On latest commit, mGBA's OpenGL renderer fails to render anything, leaving a blank game window with sounds playing.

I found this error spam in the log:

[WARN] Qt: eglSwapBuffers failed with 0x300d, surface: 0x7ff2e85f3770

[endrift]

Since you're on Linux, can you try to find the last commit that worked? Just move by increments of like 256 at first and then bisect the result.

[endrift]

Also please upload the bug report zip. I'm curious what you're running that's trying to use egl

[endrift]

0x300d is EGL_BAD_SURFACE

[autofire372]

Here's the bug report zip mgbabug3736.zip

[autofire372]

Since you're on Linux, can you try to find the last commit that worked? Just move by increments of like 256 at first and then bisect the result.

git bisect turned up this commit.

[endrift]

Thanks. I was afraid of that. I don't have an Nvidia setup so I'll need to toss you something to test once I start working on this.

[VoidAlone]

Fwiw, I'm on radeon using wayland and it's also borked for me.

[endrift]

I'm on Wayland on Intel and it's glitchy but it works. It's been glitchy since the switch to Qt 6 I think. I wonder how much of this is related to which compositor you're using. I'm using KWin (Plasma) fwiw.

[autofire372]

I'm on Wayland on Intel and it's glitchy but it works. It's been glitchy since the switch to Qt 6 I think. I wonder how much of this is related to which compositor you're using. I'm using KWin (Plasma) fwiw.

It might be an issue with Qt 6 in general; I first noticed this issue using Cinnamon's Muffin compositor.

EDIT: This is definitely Qt 6 specific; I just built mgba against qt5 by leveraging CMAKE_PREFIX_PATH, and it works without a hitch.