In addition to that, see this thread on the Pandora forums, including this post where I released a hybrid arm QEMU WINE with OpenGL passthrough (the download still link works).
I haven’t looked at this project in years, but maybe run “file” on all the executables in the hybrid download if you want to see how I mixed x86 and arm wine binaries.
For the OpenGL thunking, I originally used a modified QEMU with a custom syscall to call functions directly in a native host library, but now my upstream glshim project uses a shared memory ring buffer approach for remote rendering that works anywhere shared memory mmap works.