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SpecialKO / SpecialK

Lovingly referred to as the Swiss Army Knife of PC gaming, Special K does a bit of everything.
https://www.special-k.info/
GNU General Public License v3.0
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No paper white option in the newest version of Special K? #157

Closed bluecat1024 closed 2 months ago

bluecat1024 commented 2 months ago

The available parameter in sliders are only max brightness and a few perceptual boost parameters now. And no documents teaching us how to tune those things to reach target brightness.

What should I do to get 1000 nits peak brightness with 300 nits paper white? The paper white parameter does not seem to work in the hdr config file.

Thanks so much.

marat569 commented 2 months ago

The paper white setting has been deprecated about a year ago. It did not do what it was supposed to, and ended up just misleading people.

I suggest just using Preset 0 without any changes.

If you want to increase your peak to 1000, set sdr to hdr gamma to 1.0

If you're not happy with that, you're free to disable SK's HDR processing, and using a reshade shader to tonemap the final image (Pumbo's for example)

bluecat1024 commented 2 months ago

The paper white setting has been deprecated about a year ago. It did not do what it was supposed to, and ended up just misleading people.

I suggest just using Preset 0 without any changes.

If you want to increase your peak to 1000, set sdr to hdr gamma to 1.0

If you're not happy with that, you're free to disable SK's HDR processing, and using a reshade shader to tonemap the final image (Pumbo's for example)

Thanks for the response! Could you give some input about what paper white level is Preset 0 default getting to? I notice that after dragging 534 nit to 1000 nit, the whole picture has brightened up a great deal. Wondering what paper white level that is getting to with 1000 nit and gamma=1?

bluecat1024 commented 2 months ago

Also, should perceptual boost be turned on for HDR presets in both cases?

marat569 commented 2 months ago

You want PB on all the time

I suggest selecting preset 0, press reset to return it to its default settings .

Edit: As for what paper white setting the profile is calibrated for, I don't remember.

Also keep in mind that SDR to HDR is not exactly "infinite". You can only "stretch" SDR content to a certain point. Messing with the sdr to hdr gamma helps a little.

It's not like native hdr where you can just set whatever max luminance value you want, and have fun.

Raising the peak brightness will raise the APL.

I have a 1000 nit display, but prefer to use profile 0 with default settings (540 nits) -- that way the image is not over brightened.