2023-02-15, 13:18
Looks to me that this "HDR support" only passes on HDR metadata to the display. Since GLES rendering is still on 8 bit textures you won't get 10 bit depth.
@fritsch is this correct?
@fritsch is this correct?
(2023-02-15, 15:49)fritsch Wrote: Yes - LoadPlane still has the 10 bit knowledge, but then it seems to all end up on a 8 bit plane: https://github.com/xbmc/xbmc/blob/master...S.cpp#L308
So the HDR is basically: Telling the TV to do HDR, staying on the BT2020 transfer function but only providing 8 bit output, which has the 10 bit imported values downscaled before.
Is that what you are also seeing?
Edit: Never Mind ... the visuals are only 8 bit ... to start with ... so I don't see how 10 bit should reach the TV here ...
(2023-02-16, 05:11)username145 Wrote:(2023-02-15, 15:49)fritsch Wrote: Yes - LoadPlane still has the 10 bit knowledge, but then it seems to all end up on a 8 bit plane: https://github.com/xbmc/xbmc/blob/master...S.cpp#L308
So the HDR is basically: Telling the TV to do HDR, staying on the BT2020 transfer function but only providing 8 bit output, which has the 10 bit imported values downscaled before.
Is that what you are also seeing?
Edit: Never Mind ... the visuals are only 8 bit ... to start with ... so I don't see how 10 bit should reach the TV here ...
Does this mean Kodi doesn't actually support HDR on linux? Is this a bug and might there be a Github issue for it? I have not been able to find one.
Is LibreELEC any different in this area?
(2023-02-16, 09:08)jawilljr Wrote:(2023-02-16, 05:11)username145 Wrote:(2023-02-15, 15:49)fritsch Wrote: Yes - LoadPlane still has the 10 bit knowledge, but then it seems to all end up on a 8 bit plane: https://github.com/xbmc/xbmc/blob/master...S.cpp#L308
So the HDR is basically: Telling the TV to do HDR, staying on the BT2020 transfer function but only providing 8 bit output, which has the 10 bit imported values downscaled before.
Is that what you are also seeing?
Edit: Never Mind ... the visuals are only 8 bit ... to start with ... so I don't see how 10 bit should reach the TV here ...
Does this mean Kodi doesn't actually support HDR on linux? Is this a bug and might there be a Github issue for it? I have not been able to find one.
Is LibreELEC any different in this area?
Red Hat's Display/HDR Hackfest Scheduled For April
Linux probably won't see any real HDR support for another year or two.
Wayland's Weston 11.0 Released With HDR Display
Right now it is a work in progress.
(2023-02-16, 09:56)sarbes Wrote: And there is the hardware based approach, where the video is passed directly to the scanout device, never touching the GPU (this is the "HDR way").