Just a quick note in case anyone is testing their OpenGL-using app on Tahoe.
For whatever reason, the OpenGL surface doesn’t work (crashes) when running Tahoe in an OS-level VM (like VirtualBuddy creates). I have not tried it in a Parallels Tahoe VM as we haven’t upgraded our Parallels license yet.
So, I installed Tahoe in a separate APFS volume and rebooted my MBP directly into Tahoe.
OpenGL works fine outside the VM. Just in case anyone was worrying, Apple hasn’t removed OpenGL yet.
Incidentally, the easiest way I found to install Tahoe in a separate volume is to restart your machine into recovery mode and “re-install” Sonoma, or whatever your current OS version is, into an empty APFS volume. Boot from it, sign into your iCloud account and then upgrade it to the new beta.
It’s understandable that Apple wants us to sign into iCloud for the developer account access to the dev beta but it’s a pain to sign in and then have to quickly disable all the iCloud syncing… perhaps there’s a better way of signing in.
Anyway, HTH