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

[LKH <lkhgraf protonmail com>]

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