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HDMI 2.1 Display Stream Compression (DSC) Ready for Amdgpu Linux Driver
- WithinReason 5mo agoThis was previously blocked from inclusion in SteamOS by the HDMI forum. It would help the Steam Machine to each 4K120Hz on HDMI.
- paol 5mo agoIt was blocked from inclusion in the AMD GPU drivers, it's nothing specific to Steam or the Steam Machine. The HDMI Forum apparently forbids any open source implementation of HDMI 2.1. Although I don't know if they ever offered an official justification, for a group that exists to promote HDMI adoption, they're clearly morons.
- Aissen 5mo agowere* As the article says, they most likely changed their mind, probably following quite a bit of background discussions and industry influence.
- account42 5mo agoIt's a group that exists to make sure that the standard works for all the members, including media companies that think they can control the flow of information. They don't need to promote HDMI adoption since their members already control pretty much all the TV production.
- saghm 5mo agoIt's still not clear why the standard wouldn't work by AMD having an open source implementation. I try to give the benefit of the doubt, but in this case, it's hard not to agree with the parent comment: whoever came up with this rule and the people who agreed with it are morons.
- expedition32 5mo agoIf memory serves HDMI includes DRM which they don't want people to reverse engineer.
- preisschild 5mo agoValve also contributes to the amdgpu driver
- mort96 5mo agoWait "forbids", present tense? How does that track with this announcement that it's coming to the open source AMDGPU?
- happyPersonR 5mo agoThis is actually a good question … wonder if it’s just api calls to a binary blob haha
- NooneAtAll3 5mo agoEvery time I hear about HDMI and amount of legalese problems around it, my response is "you can just use DisplayPort"
- tapoxi 5mo agoMost TVs don't have DisplayPort
- cassianoleal 5mo agoAn adaptor costs £7.
- amlib 5mo agoThey have limitations, specially when driven to the limits of the specifications. When doing 4k@120fps 4:4:4 chroma you might have to deal with longer handshakes and sometimes even no handshake at all. Or random dropouts. Or HDR not activating properly.
- happyPersonR 5mo agoI thought handshakes were just when you were setting up a connection no? Random dropouts tho sound bad… with high speed signaling also sounds like a pain to figure out
- eliaspro 5mo agoBut wouldn't this break the HDCP chain and therefore render many use-cases (playback of DRM-protected streams) broken?
- cassianoleal 5mo agoIs that a problem for most uses of DP?
- tapoxi 5mo agoFor HDMI 2.0. For HDMI 2.1 and 4K/120hz you're looking at north of $25 and don't get VRR support.
- tosti 5mo ago> 4K @ 240Hz WHY!?
- cassianoleal 5mo agoWould you rather they explicitly blocked that even though the technology allows for it?
- nottorp 5mo agoIt's too easy for display manufacturers to compete on moar pixels, moar fps, moar refresh. You just try to embiggen your numbers compared to your competitor. Meanwhile, features where you can't compete on numbers but can ruin the experience are ignored.
- Night_Thastus 5mo agoWhat are these features that can't be measured? Plenty of people who test monitors also compare things like color coverage, brightness, latency, contrast, viewing angles, etc, etc, etc. If you mean the entire monitor, they generally also cover things like how the display swivels/mounts among other things.
- nottorp 5mo agoBrightness and contrast are also gamed to hell and back. You have to go to some very specialized review sites to read about contrast at low brightness (lights off software development scenario, or maybe even lights off gaming). I must admit I've sometimes seen a description of how wobbly the monitor is when you hit your mechanical keyboard like it's stolen your car and killed your dog. Veeery rarely though.
- tosti 5mo agoNo, I just don't think such a high refresh rate accomplishes anything. Not even bragging rights. 120Hz, possibly. But 240? Are you going to introduce a telly into a slow-motion studio, on the set?