"The lack of hardware virtualization on Apple A-chips means that even for ARM code we must re-compile it with JIT. Therefore performance would never reach the levels possible with KVM. There is also no support for GPU virtualization so that means no DirectX or OpenGL. This makes most modern games non-playable." So, OpenSpace is most probably not suitable to run via UTM on iPad / iOS.
More about JIT - https://faq.altstore.io/altstore-classic/enabling-jit/altjit
Found on https://mac.getutm.app/
"UTM does not currently support GPU emulation/virtualization on Windows and therefore lacks support for 3D acceleration (e.g. OpenGL and DirectX). You may be able to run older games with software rendering options, but nothing with hardware acceleration. There is experimental support for hardware OpenGL acceleration on Linux through Virgl."
So, OpenSpace on Ubuntu might be doable - at least with performance similar to a Windows box without NVidia graphics - on a Mac with UTM.
---------------------------
Details of what didn't work
Found the limitations the hard way, trying for many hours on the (9th gen) iPad (since I don't have access to a Mac at the moment).
UTM SE - with no JIT - took half an hour or more to boot Ubuntu 14.04 (that's not a typo, it really was the old version 14.04)
Trying to enable JIT -
Directly on AltStore - need a Hackintosh or Mac for it? - https://github.com/altstoreio/AltStore/issues/1349
Jitstreamer-EB - https://jkcoxson.com/jitstreamer
says use stikJIT - https://stikdebug.xyz/
StikJIT user manual
Apparently enabling JIT is a one-time installation - https://faq.altstore.io/altstore-classic/enabling-jit
We can't use Altstore PAL since we're not in the EU - tried and failed.
To install a downloaded ipa, go to Altstore > My apps (at the bottom), and click the + on the top. The ipa should be visible.
(if ipa is not visible, we may need to navigate using the files app, and "open with" Altstore.
Then, it asks for apple creds.)
Transferred the pairing file using icloud drive.
Long press on UTM, then "enable jit", then try to open the vm, then
error trying to connect to spice server.
If StosVPN is turned off, then AltJIT not found, can't run VMs without JIT.
FAILED TO CONNECT TO SPICE
To force quit,
swipe up and hold to open app switcher, then swipe up on the app to force-quit it.
Jitstreamer EB on Debian guide is here,
https://github.com/jkcoxson/JitStreamer-EB/blob/master/install-docs/jitstreamer-eb-debian-docker-instructions.md (not yet tried this.)
To try - minimal Ubuntu or something like that without 3d acceleration, which may not need spice.
debian 11 ARM64 lxde with spicetools installed, from gallery.
It was a zip file. Open in Downloads > unzipped. Long press and open in UTM.
But same error, QEMU exited no error message.
UTM also says Virtualization is not supported on your device.
So we can only use Emulate.
Still, same error. Then, I tried UTM SE, which took half an hour to boot the old version of Ubuntu as noted at the top of this post.
No comments:
Post a Comment