Nvidia and dithering controls..how to enable?

Discussion in 'Videocards - NVIDIA GeForce Drivers Section' started by jarablue, Feb 6, 2021.

  1. aufkrawall2

    aufkrawall2 Master Guru

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    It works, Windows just randomly breaks gamma ramps precision. Try changing resolution once via Nvidia Control Panel after changing the registry keys and restart.
     
  2. Terepin

    Terepin Master Guru

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    Tried that and still nothing. I can still see color banding in here and here.
     
  3. aufkrawall2

    aufkrawall2 Master Guru

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    Because these are 8 bit pictures, banding is already in the sources. Dithering can't fix that. In desktop usage, dithering only helps to prevent additional banding when applying GPU gamma ramp adjustment with enough precision (driver color options or loading 1D LUT via DisplayCal loader or Calibration Tools).
     
  4. Terepin

    Terepin Master Guru

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    Whatever the case, I saw no difference anywhere. Not in any of the test patterns, not in the games, not in the movies, anywhere on desktop, nor apps. And let me tell you that I have banding EVERYWHERE and ironically even in NVCPL itself.
     

  5. aufkrawall2

    aufkrawall2 Master Guru

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    Banding in the source again (everyone has it, e.g. on the PhysX page), like probably the case for your other cases too (yes, it's ~everywhere).
    Some displays also make it even a lot worse.
     
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  6. Terepin

    Terepin Master Guru

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    Yeah, I figured as much. My theory is that it was always there, but once I started no notice it, I cannot unseen it.
     
  7. Terepin

    Terepin Master Guru

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    Say, what is the probability of GPU causing the banding?
     
  8. janos666

    janos666 Maha Guru

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    I think it's your display. Not all monitors (and especially HDTVs or monitor-TV combo devices) are capable of presenting smooth gradients (gray or any other color gradients for that matter) and it's often dependent on settings.
    Most displays have decent gradients with correct settings which are usually the so called "neutral" or "no-op" settings where their processors do minimal work. But as soon as you touch anything except the backlight intensity (or on rare occasions even that one suffices) everything is thrown out of place quickly and heavily (banding and colorization occurs, often heavily even from the slightest adjustment of say the Contrast control but also from the R,G,B Gain controls which are actually per-channel contrast controls, etc).
    So my advice is: reset the display and adjust the backlight intensity. Then try different presets. Standard may or may not work best but avoid things like Photo or Game mode (yes, game mode.... that's often less accurate than most and it's not always required to have lower latency since it's often just yet another color preset rather than an actual game mode with no special low-latency pipeline).
     
  9. Dagda

    Dagda Master Guru

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    does the regedits still works?
     
  10. aufkrawall2

    aufkrawall2 Master Guru

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    1st post of this page (yes).
     

  11. CalinTM

    CalinTM Ancient Guru

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    I have a aorus fi25f display. What panel do I have 8 or 10 bit. Because I can switch between 8 and 10 in nvcp.
     
  12. SaiBork

    SaiBork Master Guru

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  13. aufkrawall2

    aufkrawall2 Master Guru

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    When the display offers 10 bit, it most likely won't simply clip at 8 bit. Funny thing is that Nvidia enables dithering for 10 bit by default. Though most 10 bit displays are actually 8 bit + FRC, so you have dithering twice (so much for people who claim they could see dither patterns, this should basically dither their eyes out).
     
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