Dynamic framebuffer resolution

I'd be very surprised if the core components in all TVs made in the last ten years are not capable of supporting 50Hz and 60Hz on an electrical level. 50Hz and 60Hz are throwbacks to when TV frame frequencies were regulated by the utility frequency (of AC) in the country they were used in but I can't believe any TV manufacturer hasn't moved to programmable PLLs nor is there any reason for the panel itself to be engineered to only operate at specific frequencies.

In the EU we've long had 60Hz support in our TVs but I suppose it's possible in the US that it costs more for FCC certification if you're including 50Hz as well. I don't know how certification works in the US.

 

This was raised recently. My Googlage suggests that NTSC TVs have the hardware support for 50 Hz but lock it out in the FW, and US TVs typically can't show 50 Hz content at native refresh.

I don't know how people could test that. If you stick a 50 Hz movie on a US console, will it output 50 Hz as here and leave the TV to handle it, or will it send a 60 Hz version?

 

Change your xbox one region to the uk then enable 50hz mode and see if you completely loose access to the xbox as it will send all output at 50hz, the tv has to deal with it.

Might be safter to try if you also have pc monitor that supports 50hz to change back although i believe some button ckmbe on boot resets videp settings as a safety backup.

 

Isn't there a "do you want to keep this setting?" option when you switch refresh rate? There is on PS3, with a 10 second or somesuch timeout to return to the previous setting.

If it's as simple as changing an X1 setting, it'd be great to get some sampled data from the B3D populace to answer this question once and for all.

 

Yes under video output (also in new dash) pal regions have the option to enable 50hz,when selecting i believe it makes the switch (my tv blanks for a second) and gives you 15 seconds till it reverts.

I am not sure if it jumps to and from 50 in normal usage but I assume at least this dialog must be at 50hz to allow you to confirm it works, my set goes black briefly when enabled so did switch something.

 

Even if it's not being administer on the OS level, I'm hoping the big studios would consider investing in this type of software to leverage the hardware in these boxes this generation.

 

Sorry, wrong thread

 

IQ seems good overall... it's the screen tearing that's needs fixing more so than anything else.

 

Well, this was briefly discussed on Doom9 some time ago, see the following post for example, quote:

Anyway, even if you have a display that can sync to 50 Hz, it most likely would suck to switch from 60 Hz to 50 Hz, since it would not be instantaneuos. The display would probably blank out (show a black screen) for a few seconds before re-syncing, which would make it useless for gaming.

What consoles would really need is something like AMD's FreeSync or Nvidia's G-Sync, plus TV manufacturers really need to start producing TVs that support FreeSync and G-Sync.

And FreeSync and G-Sync need to start supporting lower refresh-/frame-rates better.

That would be the best. That would solve so many issues with consoles.

Actually in one of their latest videos, AMD has announced LFC (Low Framerate Compensation) and bringing FreeSync to HDMI in 2016, see:



Let's hope this will allow the PS4 and Xbox One (which both have a AMD GPU with HDMI output) to enable FreeSync over HDMI and encourage TV manufacturers to start supporting FreeSync in their TVs, either via developing new TVs or enabling it for existing TVs via firmware updates .

Now that would be incredible!

 

PS:

FreeSync thread is over there:

https://forum.beyond3d.com/threads/amds-freesync-could-come-to-next-gen-consoles.55319/

 

1) We already have dynamic resolution in a lot of console games
2) There's no need for system-level, automagical dynamic res for consoles where the hardware is fixed and games can be made and tuned for exactly that hardware.

 

UE 4.19 came out today and it features dynamic resolution and temporal supersampling on consoles. They said it will come to PC later.

 

My preliminary results with UE 4.19 temporal upscaler. 1080p upscaled to 4K looks closer to 4K. Significant improvement.

I am personally much more interested about temporal upscaling than dynamic resolution. Our frame rate is very stable, so dynamic resolution doesn't do much for us. But getting almost native looking 4K on PS4 Pro and Xbox One X is definitely going to be nice improvement.

 

If your framerates are stable at the res you are at, maybe that means you can use dynamic res to have it be even higher res when possible. I imagine your game is stable because you balanced it for the worstcases, so use that to have it render at hires on best case, you could even get super sampling on ps4 then...

 

Added dynamic res too. Get up to 10% higher resolution in lightweight areas. Nice improvement. PS4 Pro now looks surprisingly close to native 4K (Titan X), and still runs at locked 60 fps.

 

Do you use rapid packed maths on ps4 pro ? If yes what is the benefit ?