Search found 42 matches

by xeos
02 Sep 2020, 11:44
Forum: Input Lag / Display Lag / Network Lag
Topic: Human Benchmark implemented in C++ DirectX9
Replies: 38
Views: 7076

Re: Human Benchmark implemented in C++ DirectX9

5. look into using CreateDeviceEx which allows independant/immediate flip would that allow gsync/freesync based flipping? Otherwise I think keeping locked to vsync is better. you just need to keep track of when the image is actually displayed and measure response time relative to that. Of course to...
by xeos
31 Aug 2020, 12:50
Forum: Input Lag / Display Lag / Network Lag
Topic: Human Benchmark implemented in C++ DirectX9
Replies: 38
Views: 7076

Re: Human Benchmark implemented in C++ DirectX9

PS for $5 + S&H + a few pennies for a toggle switch you could do this task on a raspberry pi zero and get data every bit as accurate as the professionals. There's a lot of uncertainty in terms of your keyboard/mouse delay, your screen's delay, and even the OS.
by xeos
31 Aug 2020, 12:46
Forum: Input Lag / Display Lag / Network Lag
Topic: Human Benchmark implemented in C++ DirectX9
Replies: 38
Views: 7076

Re: Human Benchmark implemented in C++ DirectX9

last click: 343.2 ms min click: 207.4 ms max click: 343.2 ms average click: 254.8 ms successful clicks: 8 early clicks: 0 in my 40s, so you'd expect me to be slower than average. My display (Dell2410)'s input lag is 20-40ms , so optimistically I could say I matched your 150ms number, once... I'd exp...
by xeos
31 Aug 2020, 12:25
Forum: Input Lag / Display Lag / Network Lag
Topic: New input/display lag measurement kit using raspberry pi and some cheap hardware
Replies: 1
Views: 753

New input/display lag measurement kit using raspberry pi and some cheap hardware

I recently finished a new device for measuring input lag / display lag - that is to say how long your display takes to respond to input over HDMI. It also measures response time (b2w). It's a kit that you plug into your raspberry pi, and measures both input lag and (separately) response time. Becaus...
by xeos
04 Jun 2020, 12:47
Forum: Input Lag / Display Lag / Network Lag
Topic: Use a regular raspberry pi to measure input lag with millisecond accuracy
Replies: 7
Views: 1678

Re: Use a regular raspberry pi to measure input lag with millisecond accuracy

In the monitor/display review sites and such, input lag is the term for it - but perhaps in the gamer community it's called display lag? I'm not a hard core gamer. In any case it doesn't pay to get hung up on terms; to be clear: this is a device/method that measures how long it takes the display to ...
by xeos
02 Jun 2020, 17:16
Forum: Input Lag / Display Lag / Network Lag
Topic: Use a regular raspberry pi to measure input lag with millisecond accuracy
Replies: 7
Views: 1678

Re: Use a regular raspberry pi to measure input lag with millisecond accuracy

Indeed, yes, averaging. That does the job. It's actually a bit more than that - you'd have to average a *LOT* to get decent data without using my technique. If you wanted to use a 60hz camera, anyway. But by measuring the extent of the vertical bar, 5-8 samples seems to be enough, empirically. I'd ...
by xeos
02 Jun 2020, 16:12
Forum: Input Lag / Display Lag / Network Lag
Topic: Use a regular raspberry pi to measure input lag with millisecond accuracy
Replies: 7
Views: 1678

Re: Use a regular raspberry pi to measure input lag with millisecond accuracy

However, it won't be millisecond accuracy with a 60fps camera. You need 1000fps for millisecond accuracy. That's actually the part I'm pretty pleased about: yes you can get millisecond accuracy with a 60hz camera. At least 1-2 millisecond, anyway, with averaging. https://alantechreview.blogspot.com...
by xeos
02 Jun 2020, 16:07
Forum: Input Lag / Display Lag / Network Lag
Topic: Use a regular raspberry pi to measure input lag with millisecond accuracy
Replies: 7
Views: 1678

Re: Use a regular raspberry pi to measure input lag with millisecond accuracy

Yep, similar. Great minds think alike? Though, by generating the appropriate test signal (in this case a bar) the temporal resolution is much better. I like that you can measure your method in actual games but that does muddy up the contributions of mouse polling, game engine, and display pipeline v...
by xeos
02 Jun 2020, 14:40
Forum: General — Displays, Graphics & More
Topic: >>> VOTE!!!! Ideas To Help Blur Busters!
Replies: 29
Views: 75412

Re: >>> VOTE!!!! Ideas To Help Blur Busters!

I don't mind ads - and personally, I think that clicking on them is how one should tip websites that you like. Google does a decent job of showing relevant ads, so it's really not an imposition.
by xeos
02 Jun 2020, 14:07
Forum: Input Lag / Display Lag / Network Lag
Topic: Use a regular raspberry pi to measure input lag with millisecond accuracy
Replies: 7
Views: 1678

Use a regular raspberry pi to measure input lag with millisecond accuracy

For anybody who wants to measure input lag but doesn't want to shell out for a leo bodnar, time sleuth, or mod their OSSC there's another option that just requires a raspberry pi (zero). They can be had for $5 if you don't already have one. The other requirement is a camera - 60fps or higher (high s...