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

[LKH <lkhgraf protonmail com>]

I wanted to see if developers could verify that GIMP is capable of 30-bit display and if I need to enable 
anything for this to work.

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Sunday, November 15, 2020 6:19 AM, LKH via gimp-user-list <gimp-user-list gnome org> wrote:

> I am still experiencing banding with a gradient made from scratch in GIMP 2.99 in 32-bit floating point 
> mode on X11 when xdpyinfo and xwininfo say the window is 30-bit. If dithering is off the banding is 
> obvious. I believe 16-bit support for TIFF is in GIMP anyway because it says it is in 16-bit mode after 
> loading it.
>
> I have tested Adobe Photoshop CC on both Windows and macOS and the monitor does successfully display in 30 
> bit. No amount of zooming in on the test gradient produces banding in those cases.
>
> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> On Saturday, November 14, 2020 10:13 PM, Liam R E Quin liam holoweb net wrote:
>
> > On Sat, 2020-11-14 at 19:44 +0000, LKH wrote:
> >
> > > I could tell it wasn't working because there was banding in the 16-
> > > bit test image I used
> >
> > I'd suggest making a 32-bit floating-point linear image in gimp and
> > drawing a gradient the width of the screen.
> > There's 16-bit png support; i have not tried TIFF or PSD.
> > Liam
> >
> > Liam Quin - web slave for https://www.fromoldbooks.org/
> > Full-time slave in voluntary servitude
>
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