Blur Busters Forums

Who you gonna call? The Blur Busters! For Everything Better Than 60Hz™ Skip to content

flood's input lag measurements

Everything about input lag. Tips, testing methods, mouse lag, display lag, game engine lag, whole input lag chain, VSYNC OFF vs VSYNC ON, and more! Input Lag Articles on Blur Busters.

Re: flood's input lag measurements

Postby Glide » 29 Apr 2017, 05:29

RealNC wrote:This new "non-exclusive fullscreen" mode is actually quite awesome, when you think about it. No input lag, but still faster alt+tabbing compared to exclusive, and you can still switch resolution, and your color settings are followed (I think.)

So does that mean games running in the new borderless mode are also free of DWM lag, since that also allows for screen tearing?
As I understand it, you should still get all the latency benefits so long as nothing is overlaying the window.

RealNC wrote:
Glide wrote:I wonder if there's a way to force games to use the enhanced fullscreen mode, as it currently only works with games that Microsoft has whitelisted.
This is the most complete list that I have found so far.

I'm not aware of a way, sadly. It seems OpenGL games also use this mode though. No Man's Sky for example came out in summer last year, but it was using this new mode too when selecting "borderless windowed." Which is weird. I'm not sure what's going on there. I suspect the driver can put the game in that mode automatically (at least on nvidia), but it doesn't do that for DirectX games.

Microsoft have been working to move all "legacy APIs" over to using the new DWM mode - though I was not aware that it (apparently) included OpenGL.
Anything DX9 or older uses it by default.
It only seems to be DX10/11 games that have to be whitelisted to use it.
I was hoping that someone might have found a registry key where other games could be added to the whitelist for example.
Glide
 
Posts: 275
Joined: 24 Mar 2015, 20:33

Re: flood's input lag measurements

Postby RealNC » 29 Apr 2017, 06:02

Glide wrote:So does that mean games running in the new borderless mode are also free of DWM lag, since that also allows for screen tearing?
As I understand it, you should still get all the latency benefits so long as nothing is overlaying the window.

Yeah. As soon as an overlay needs to be displayed (like the volume indicator), DWM is activated. When the overlay goes away, DWM is turned off again.
The views and opinions expressed in my posts are my own and do not necessarily reflect the official policy or position of Blur Busters.
User avatar
RealNC
 
Posts: 1278
Joined: 24 Dec 2013, 18:32

Re: flood's input lag measurements

Postby br00m » 29 Apr 2017, 13:47

No I dont play in windowed mode, I just thought that I might have found a prove for my sluggish feeling. Thank you for your insight.
br00m
 
Posts: 11
Joined: 19 Apr 2017, 15:03

Re: flood's input lag measurements

Postby flood » 06 May 2017, 15:35

i've never tried the new windows 10 thing but based on what i've seen from windows 7 without dwm/aero, windows xp, linux without compositing, etc...

for non exclusive fullscreen modes without vsync

all nvidia cards after 600 series don't tear uniformly. like instead of getting tearing like
Code: Select all
|
 |
  |
   |
    |

you get
Code: Select all
|
|
|
  |
    |


basically this means that in this mode, the image at the center of the screen is delayed by a little.


lexlazootin wrote:Input latency in all CS games are the same.

uhhh no.
it depends on framerate and stuff.
they're close enough that it doesn't really matter though
flood
 
Posts: 881
Joined: 21 Dec 2013, 01:25

Re: flood's input lag measurements

Postby lexlazootin » 07 May 2017, 00:42

I was speaking of the same framerates. When i tested HL/Source/GO i got pretty much the same results.
lexlazootin
 
Posts: 975
Joined: 16 Dec 2014, 02:57

Re: flood's input lag measurements

Postby br00m » 07 May 2017, 20:47

I have a general question: when csgo feels sluggish to me, does that mean i have input delay or could it also be some kind of negative acceleration?
br00m
 
Posts: 11
Joined: 19 Apr 2017, 15:03

Re: flood's input lag measurements

Postby Sparky » 07 May 2017, 21:28

br00m wrote:I have a general question: when csgo feels sluggish to me, does that mean i have input delay or could it also be some kind of negative acceleration?

Yes? "feels sluggish" isn't enough information for us to figure out what your issue is.
Sparky
 
Posts: 545
Joined: 15 Jan 2014, 02:29

Re: flood's input lag measurements

Postby br00m » 07 May 2017, 21:47

Okay how can i descibe that better. So as I said earlier I started playing css in 2003 and csgo in 2014ish. Css and also 1.6 feels much more direct/responsive/snappier to me as csgo. I played all 3 games on the same system so I kinda think its not my hardware/drivers. Of course I have vsync off and I get a constant 200 FPS with my i5 2320 and HD 7850 with everything on low and a 1280x720 resolution. Maybe Im just super sensitive to input lag and most others dont feel it.
br00m
 
Posts: 11
Joined: 19 Apr 2017, 15:03

Re: flood's input lag measurements

Postby flood » 16 May 2017, 22:10

lexlazootin wrote:I was speaking of the same framerates. When i tested HL/Source/GO i got pretty much the same results.

well same to what precision?
because with my setup i could see clear differences of a few ms for the same fps cap, due to differences the time taken to actually render.

practically, yes none of the games have significant input lag on a high end computer
flood
 
Posts: 881
Joined: 21 Dec 2013, 01:25

Re: flood's input lag measurements

Postby lexlazootin » 17 May 2017, 10:14

Nowhere as precise as your tests. It was just bumping the mouse with a 1000fps camera and/or using my led+battery mouse click thing i made out of a G302.

at 1000fps they were around 9-13ms~ total input latency, it was more to verify my system then make any useful numbers but it was good enough for me. i was actually surprised that it was actually that low to begin with.
lexlazootin
 
Posts: 975
Joined: 16 Dec 2014, 02:57

PreviousNext

Return to Input Lag

Who is online

Users browsing this forum: Baidu [Spider] and 2 guests