Re: [Gimp-user] 10-bit display color depth support (30-bit, deep color)

[LKH <lkhgraf protonmail com>]

Yes I have a 10-bit display and 16-bit test image that successfully work with other software on Windows and 
macOS. I was unable to find any Linux software that could display the image correctly so I'm not positive X11 
is working correctly other than it reporting being in 30-bit in Xorg.0.log, xdpyinfo and xwininfo.

I could tell it wasn't working because there was banding in the 16-bit test image I used which isn't there 
when it displays correctly in other software. One user in the thread you linked reported the same thing about 
a PSD test image. I am trying with a TIF file from EIZO.

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Saturday, November 14, 2020 6:31 PM, Liam R E Quin <liam holoweb net> wrote:

> On Sat, 2020-11-14 at 10:35 +0000, LKH via gimp-user-list wrote:
>
> > Yes I have tried GIMP 2.99 on Linux with 30-bit depth enabled as
> > verified with xdpyinfo and xwininfo. It does not display in 30-bit as
> > far as I can tell.
>
> Make sure that you have a monitor that can handle 10-bit colour.
>
> GIMP did use 30-bit visuals when i tried it in X; you must of course
> have an image with bit depth 16 per channel or higher to experience it
> :) The main problem i had was that gtk2 thoguht it was 24-bit colour
> plus -bit alpha, so while the gimp image window was fine, the dialogue
> boxes were partly transparent. It's a while since i tried (the monitor
> here is only 8-bit) but gimp 2.99 is a better bet than gimp 2.10 for
> this.
>
> > Conceptually this is definitely not something that would just work
> > without the developers going to some lengths to implement it,
>
> Right.
>
> How did you determine it wasn't working? With xdpyinfo? what did it
> report?
>
> See e.g.
> https://gitlab.gnome.org/GNOME/gimp/-/issues/3859
>
>
> ---------------------------------------------------------------------------------------------------------------------------------------------------
>
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