[Interest] HDR 10/ HDR Dolby support?

[Allan Sandfeld Jensen]

On Dienstag, 15. Mai 2018 18:05:04 CEST Boudewijn Rempt wrote:
> On dinsdag 15 mei 2018 18:00:04 CEST Allan Sandfeld Jensen wrote:
> > On Dienstag, 15. Mai 2018 12:21:53 CEST Boudewijn Rempt wrote:
> > > Hi,
> > > 
> > > I'm wondering, is there any work going to support HDR 10 or HDR Dolby
> > > from
> > > within Qt, directly or through OpenGL? Has anyone tried something like
> > > that?
> > 
> > That is a TV format. What do you want Qt to do with it?
> 
> It's also a monitor format: the Lenovo Yoga X1 3rd gen has a Dolby HDR
> panel. What I want to do it make it possible to paint HDR images in Krita
> without having to tonemap to an SDR panel, if they have hardware like this.

They only way I know of doing that at all at the moment is on Windows and only 
using fullscreen mode, and the monitor probably only supports it though HDMI. 
We are missing the proper standards for mixing HDR and SDR content, and for 
Linux, we lack the GLX, X11, Wayland and OpenGL standards, though in theory 
you can do it through EGL, but I haven't found support for it, so I haven't 
been able to tell how it would work and how we should use it.

Btw, if you have HDR support in Krita, how do you handle the difference 
between relative SDR colors (0-1.0) and absolute HDR colors (0-12.0)? Do you 
have a color wheel that allows for the imaginary colors HDR uses (whiter than 
white, bluer than blue).

'Allan