HDR support in Wayland/Weston

Simon Ser contact at emersion.fr
Mon Mar 4 12:55:16 UTC 2019

On Monday, March 4, 2019 10:50 AM, Carsten Haitzler <raster at rasterman.com> wrote:
> > How should this look like? Disclaimer: I have no idea how these applications
> > work and I know nothing about color management.
> > I'm guessing this is a restriction of the "change the whole LUTs" API. Are
> > there any features the "blue light filter" app won't be able to implement when
> > switching to this API? Would the compositor part become complicated (judging
> > from 2 it seems different "blue light filter" apps may compute LUTs
> > differently)?
> > Since many compositors (GNOME, KDE, wlroots, maybe more) implement a way to
> > apply a "blue light filter", I think it's important to be able to notify color
> > management applications that they don't have exclusive access. Or maybe this
> > should just be handled internally by the compositor? (Display a warning or
> > something?)
> apps should not have exclusive access. we're re-doing the whole horrid "install
> colormap" thing from the x days of 256 color (or paletted/colormapped displays).

Yes, of course. I should've said "that the compositor won't display
accurate colors".

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