-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On Mon, Apr 22, 2024 at 10:38:56AM -0000, qubist wrote: > On Mon, 22 Apr 2024 00:01:30 +0200 Marek Marczykowski-Górecki wrote: > > > It doesn't matter what your display is using, the memory allocated in > > VM for the frame buffer is 32-bits per pixel. > > When using a 4K 10-bit display (note the bpp): > > root@dom0:~ # grep bpp /sys/kernel/debug/dri/0/i915_display_info > pipe src=3840x2160+0+0, dither=no, bpp=30 > pipe src=0x0+0+0, dither=no, bpp=0 > pipe src=0x0+0+0, dither=no, bpp=0 > > When using a 2K 8-bit display: > > root@dom0:~ # grep bpp /sys/kernel/debug/dri/0/i915_display_info > pipe src=0x0+0+0, dither=no, bpp=0 > pipe src=1920x1080+0+0, dither=no, bpp=24 > pipe src=0x0+0+0, dither=no, bpp=0 > > Also, according to 'xrandr --verbose", max bpc is 12. > > How do you read this? > > If it is always 32 bits, it would mean 2-bit alpha for 10-bit display. > Or does Qubes OS even support 10/30-bit color?
VMs do not see nor care what display is connected. From the VM point of view it's always 32 bits per pixel (3x8 + 8 padding, as alpha is not supported). - -- Best Regards, Marek Marczykowski-Górecki Invisible Things Lab -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEhrpukzGPukRmQqkK24/THMrX1ywFAmYmSncACgkQ24/THMrX 1yxtzwf8CShXlR8j4651qFqPti6tHfL2gs9Jred4yvi3xdoZ9KLnGMZYUFoR/QN/ yZlfklge0foJHDDpOUcB+Q+Ku2SfS0Did6yUMaHQVwGH1X8zXkcLYOwIICOR2FDv 9uwdqpLEVLZK3Qmsu9RDGSs83dlub1KXzWtPaW1eMfDbxrYj5OJGjPpqsB4dT4MI YroowdXAV3+7pWt7Snb6MhRMgUKRHrXlxjLa5yl+CKZaB0eIfDMh2Dbs+0X581S9 z0j9JyUWte/BdQc6E0+EwCSpvn3qZfNazFC4hDb83J/mHlf7Uu5hT4oYBmPPsshq LztovCmualC9aA+w6Sbm0HGLMg/wkw== =Dgxd -----END PGP SIGNATURE----- -- You received this message because you are subscribed to the Google Groups "qubes-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-devel+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-devel/ZiZKdy_6k4bqDzbg%40mail-itl.
