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?
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