INTERACT FORUM

Please login or register.

Login with username, password and session length
Advanced search  
Pages: [1]   Go Down

Author Topic: Is it Possible to specify custom gamut XY values in JRVR?  (Read 264 times)

Movieman

  • World Citizen
  • ***
  • Posts: 113
Is it Possible to specify custom gamut XY values in JRVR?
« on: January 11, 2024, 01:18:59 pm »

Title says it all.  I can do this in MadVR, does an equivalent function exist in JRVR / libplacebo?
Logged

mattkhan

  • MC Beta Team
  • Citizen of the Universe
  • *****
  • Posts: 3980
Re: Is it Possible to specify custom gamut XY values in JRVR?
« Reply #1 on: January 11, 2024, 01:44:06 pm »

I believe not, it would be a nice enhancement though
Logged

Hendrik

  • Administrator
  • Citizen of the Universe
  • *****
  • Posts: 10772
Re: Is it Possible to specify custom gamut XY values in JRVR?
« Reply #2 on: January 11, 2024, 03:19:07 pm »

For your display? Use a ICC profile, or a 3DLUT.
Having that sort of input is frankly too niche to support directly.
Logged
~ nevcairiel
~ Author of LAV Filters

Movieman

  • World Citizen
  • ***
  • Posts: 113
Re: Is it Possible to specify custom gamut XY values in JRVR?
« Reply #3 on: January 11, 2024, 03:40:44 pm »

I've attempted using a 3DLUT with less than ideal results.

It seems to me that it's not too niche for MadVR where it works perfectly for me, eliminating the need to have to back off on the saturation and contrast to avoid clipping saturated colors, since my JVC can't reach full P3 or BT.2020 targets.

Others have requested this as well, so it can't be that niche.

Without this, JRVR / libplacebo is a no-go for me.
Logged

Hendrik

  • Administrator
  • Citizen of the Universe
  • *****
  • Posts: 10772
Re: Is it Possible to specify custom gamut XY values in JRVR?
« Reply #4 on: January 11, 2024, 04:07:32 pm »

Specifying your display's capability is what an ICC profile is for.  JRVR/libplacebo will read it and get the display's gamut properties, then transform the content accordingly.

If this is a mandatory transformation for you, then you could create a customized ICC profile with this information. Could even limit it to only this information if you don't want any other adjustments made.
Logged
~ nevcairiel
~ Author of LAV Filters

mattkhan

  • MC Beta Team
  • Citizen of the Universe
  • *****
  • Posts: 3980
Re: Is it Possible to specify custom gamut XY values in JRVR?
« Reply #5 on: January 11, 2024, 04:14:35 pm »

I think it's just easier to enter a few values read from some calibration tool than it is to create an ICC profile
Logged

mattkhan

  • MC Beta Team
  • Citizen of the Universe
  • *****
  • Posts: 3980
Re: Is it Possible to specify custom gamut XY values in JRVR?
« Reply #6 on: January 12, 2024, 02:41:21 am »

Specifying your display's capability is what an ICC profile is for.  JRVR/libplacebo will read it and get the display's gamut properties, then transform the content accordingly.
btw my recollection is that you can't use both ICC and a 3dlut and that a 3dlut can't specify a custom gamut hence custom gamut, if it's possible to apply via an ICC, is still not supported for someone using a 3dlut. I haven't looked into ICC support in libplacebo much so not sure if that is that correct?
Logged
Pages: [1]   Go Up