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List:       gimp-developer
Subject:    [Gimp-developer] Fw: Re: [Gimp-user] 10-bit display color depth support (30-bit, deep color)
From:       LKH via gimp-developer-list <gimp-developer-list () gnome ! org>
Date:       2020-11-16 9:50:18
Message-ID: uQPxfaMRGigZH6B_aujBTVgUbpTG3Y67PMgSBNiTpAzmyNrwvNb5L4arCHelrpbSMy0Poa5fg8v-DLL_b5oiUgZvfb-pFCVN-i2yMdgw2N4= () protonmail ! com
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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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