Marek & Mario Prep 10-bit Color Visual Support For Mesa/Gallium3D

[microcode]

But the 10 bit/HDR marketing is really confusing. The LG one only has "Color Depth(Number of Colors): 1.06Billion Color" in the specs but no HDR/HDR10. How does that differ from the LG 32UD99-W that is marketed with HDR10? I'm worried that LG 43UD79-B may only have 10bit panel but not take 10bit input. Not sure if that makes any sense.

HDR10 and 10-bit sRGB are entirely different. With HDR10, you have the same precision as 8-bit sRGB, but wider dynamic range. These patches are for 10-bit sRGB, not HDR10. The marketing material for the Philips monitor is correct about the LG monitor as well. it's about having more precision in the same dynamic range as 8-bit sRGB.

[magika]

Most video cards? Well except Nvidia non-quadro's that decided to make that a Quadro only feature, despite being a requirement for OpenGL 3.

Maybe thats why non-quadro Nvidia cards support 10bit X visuals and up to 12bit on Windows for ages.

[carewolf]

HDR10 and 10-bit sRGB are entirely different. With HDR10, you have the same precision as 8-bit sRGB, but wider dynamic range. These patches are for 10-bit sRGB, not HDR10. The marketing material for the Philips monitor is correct about the LG monitor as well. it's about having more precision in the same dynamic range as 8-bit sRGB.

HDR10 also has 10-bit per color, so it has increased precision too. The difference is basically just the "gamma" function. Whether it is using sRGB or Hybrid Log Gamma (both of them not being pure gamma functions btw). And of course that HDR pretends to have colors values above maximum.

[microcode]

HDR10 also has 10-bit per color, so it has increased precision too.

It has more range, but the gamma functions are calibrated, to my knowledge, to provide about the same level of precision (in the range represented by sRGB).

[carewolf]

It has more range, but the gamma functions are calibrated, to my knowledge, to provide about the same level of precision (in the range represented by sRGB).

Well, sort-of. That could be the practical result. If you have a white that is the brightest you want normally on your screen you would want that configured as sRgb 1.0, 1.0, 1.0, and you can then have spot-wise higher values for HDR content, if that comfortable white is 4 times less than maximum, what you suggest would be the result. If however you imagined fixed maximum brightness (the best your screen can do) then the two encodings are both 10bit encoding from 0 to 1, just with different gamma curves.

It is still up in the air how to best combine HDR and SDR content though. So far it only really works with fullscreen content in one or the other.

According to Wikipedia: https://en.wikipedia.org/wiki/Rec._2020
In the 10bit version known as HDR10 values below 64 are blacker than black, and values above 940 are whiter than white. So that is 876 stops or 3+ times the 8-bit precision in what they considered the normal range. And apparently 8 color steps are reserved for timing(?)

[chithanh]

Now I need to get a 10bpc monitor.

There were a couple of BF deals. Some are still in stock.

For example the AOC Q3279VWF (31.5" 2560x1440, VA panel, 48-75 Hz FreeSync, 10-bit through FRC) for 199.99 GBP at several UK outlets.