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Old 31st January 2019, 12:31   #54514  |  Link
Manni
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Join Date: Jul 2014
Posts: 942
@Madshi

I can confirm that 417.71 doesn't send the correct metadata in HDR passthrough. It sends bogus 1000/20 instead of the actual MaxCLL/MaxFALL and bogus 1000/0.030 instead of actual Max/Min DL.

It does send the BT2020 flag correctly when using pixel shaders tonemapping, so the Vertex changes calibration flawlessly between SDR/HDR on the JVC.

It looks like it works for me, as I don't need passthrough anymore, but I'll keep an eye out for any other oddities.

The levels are still borked on the JVCs in 12bits, you have to use 0-255 in MadVR despite the GPU being set to 0-255 and the display being set to standard to get the correct levels, but that means nVidia or the JVC is probably doing something behind MadVR's back. You can't get the correct levels at all with the JVC set to enhanced.

That's one of the reasons why I stayed so long on 385.28, which is the last driver with which the correct settings give the correct levels (so no one dithering behind MadVR's back).

I'm not ruling out going back to it at some point, but that won't be an option if/when I move to RTX, so I have some motivation to find a more recent one.
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Last edited by Manni; 31st January 2019 at 12:33.
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