HDR Gaming on AMD RX 400 Series Cards Limited to 8-bit via HDMI

Discussion in 'Frontpage news' started by Hilbert Hagedoorn, Nov 17, 2016.

  1. Hilbert Hagedoorn

    Hilbert Hagedoorn Don Vito Corleone Staff Member

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  2. SirDremor

    SirDremor Master Guru

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    And AMD trolls will NOW start to bash Nvidia for doing exactly the same as AMD...
     
    Last edited: Nov 17, 2016
  3. Denial

    Denial Ancient Guru

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    Has anyone here played SW2 on a HDR display? If so how is it? I watched Marco Polo on Netflix on my HDR TV - at first I liked it, it was noticeably like more vibrant and nice looking, but after a while the brightness just kind of hurt my eyes. My screen is calibrated for the room, but I'm not really sure how HDR effects that calibration.
     
  4. moeppel

    moeppel Member Guru

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    For all I care HDMI belongs in the dumpster right there with DVI, insofar the they really intend to get rid of DVI, which at least AMD seems to be.

    DisplayPort 1.3 will hopefully remedy the bandwidth issues of 'current gen' ports.
     

  5. Prince Valiant

    Prince Valiant Master Guru

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    I believe the spec demands some absurd maximum achievable brightness for displays to be branded with it. It shouldn't affect anything if you calibrated the TV to a specific max brightness and any dynamic brightness/backlight mode isn't on.
     
  6. ruiner13

    ruiner13 Member Guru

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    @Hilbert, I don't think this has much effect on Ultra HD movies since those are generally 24FPS, not 60, so there should be enough bandwidth to support 4:4:4 over HDMI 2.0. It is only a problem for PCs that use 60Hz to upsample video (24 -> 60Hz upsample can be crappy) or for gaming of course. However, your movie comment doesn't seem to apply.
     
  7. Hilbert Hagedoorn

    Hilbert Hagedoorn Don Vito Corleone Staff Member

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    Depends a little, if the uplink is fully connected at a HDMI 2.0 handshake at 60Hz it might be an issue. In a lot of situations say where you'd use say KODI set at a variable refresh rates it lowers the UHD TV refresh rate to match at say 50 / 30 or indeed 24Hz, in such situations there would be enough bandwidth.

    But sure, chances are that for movie playback this is not an issue.
     
  8. Toss3

    Toss3 Member Guru

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    So does this only apply to 4k resolutions, or basically all HDMI-monitors?
     
  9. Marios145

    Marios145 Member

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    Why is hdmi still alive?Can't everyone(tv/monitors/gpus) just make it legacy and convert to DP???
     
  10. Tree Dude

    Tree Dude Master Guru

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    How does this happen when the XB1S supports 10-bit HDR over HDMI? Is it just 8-bit when at 4K and 10-bit at 1080p?

    EDIT - It helps if I read the article. NVM!
     

  11. Denial

    Denial Ancient Guru

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    Yeah, this only effects UHD.
     
  12. MegaFalloutFan

    MegaFalloutFan Master Guru

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    Guys, Guys, sorry to disappoint you but both 2k BluRay and 4K BluRay is 4:2:0.
    Its the BluRay standard.
    In that mode, you can do 10bit in 4K and 60hz.
     
  13. fry178

    fry178 Maha Guru

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    @Marios145
    why?
    just so every cheap no name 40in for 300$ has it?
    ever thought that that it might cost more (than hdmi), which will affect prices for millions of ppl on this planet buying their tv/monitor based on price?
    and they might not even care/have/use a hdr disc/player/tv.

    not even talking about all those business/office computers, they sure all need HDR capable UHD screens to check their email.

    yeah, why not equip ever desktop with a 1080sli setup for that matter, right?
     
    Last edited: Nov 17, 2016
  14. MegaFalloutFan

    MegaFalloutFan Master Guru

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    You are wrong, there is no point in using HDMI!

    1. Fact, DP has more bandwidth and always beats HDMI in adding new features.
    2. Fact, you have to PAY for HDMI and DP is FREE!
    The FREE part is whats important!
    The only reason we still have HDMI is for backwards compatibility, they cant kill it.

    If electronic companies cared enough about progress, they can kill HDMI in their next years models and offer HDMI 2.0b to DP dongles with every product model year 2016 and 2017, than in 2018 offer the dongles as paid accessory and that it, forget about HDMI.

     
  15. rl66

    rl66 Ancient Guru

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    HDMI is the standard for home entertainment, it's cheap, secured (yeah major love DRM)... etc etc

    DVI is still THE standard for asiatic computer (despite it lost each year facing DP)

    DP is for everything pro and/or computer. and it is more versatile than those upster
     

  16. fry178

    fry178 Maha Guru

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    @MegaFalloutFan
    Yes there is. How about the billions of ppl on this planet, that are not using hdr in any way (no gaming/movies or for office pc's).
    You expect everyone to switch out half of their hardware, because of one application bottlenecking (hdr gaming@ FHD/UHD)?
    Right.
     
    Last edited: Nov 18, 2016
  17. MegaFalloutFan

    MegaFalloutFan Master Guru

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    Its not just about HDR, there are ton of features current and future.


    For starters No ONE is taking away your current monitor, so your comment has zero logic.
    Also every PC monitor in the last 5 years moved on to DP.
    All 1440p and higher moved to DP since day one, HDMI 2.0 is new.
    The one ones that do have HDMI 2.0, usually have one port and the rest is DP.
    So PC monitors are NOT the issue, we ALREADY moved on.
    The issue is everything else, TVs, Consoles, BluRay player etc
     
  18. Angrycrab

    Angrycrab Master Guru

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    It's not just HDR gaming even the standard 4K 4:4:4 10-bit @ 60hz can't be achieved with HDMI 2.0 which Is disgusting for people using PC on 4K HDR TV's
    P.S Movies are always encoded at 4:2:0 so even If your device was set to display 4:4:4 It will downconvert to 4:2:0 when playing a video source.
     
    Last edited: Nov 19, 2016
  19. Fender178

    Fender178 Ancient Guru

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    Its has become the standard for the Home Entertainment industry and to change that would cause a bunch of problems for the manufacturers as well as the consumers. Maybe the Manufacturers of TVs and other devices that use HDMI only have a deal where it does not cost them alot to use HDMI since they might have bought HDMI licenses in bulk.
     
  20. wiak

    wiak Member

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    nothing new, hdmi is a dead end, fun fact, you can connect a DisplayPort to HDMI 2.0 Adapter to a 5 year old HD 7900 series card and get full hdmi 2.0 with RGB 8bit 4:4:4 ... lol

    why is hdmi still a thing amazed me, long live the displayport overlords

    also VGA & DVI is DEAD, been that for awhile, the writing has been on the freaking wall for the past 5 YEARS, both amd and intel has removed those from their products, you will only find those on partner cards

    didnt nvidia also do some funky things with their first so-called hdmi 2.0 cards?, going 4:2:0 or something instead of 4:4:4?

    http://www.club-3d.com/index.php/pr...layport-12-to-hdmi-20-uhd-active-adapter.html
     
    Last edited: Nov 19, 2016

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