Comment by flohofwoe

I don't know sorry. For debugging GL I usually switch to Windows with RenderDoc (or some current NVIDIA tool - does Nsight still exist?).

RenderDoc on Linux appears to work fine for X11 apps via XWayland btw (just testing here via the sokol-samples with the sokol-gfx GL backend: https://github.com/floooh/sokol-samples, just another reason to not have a native Wayland backend but instead rely on the XWayland shim I guess...