Search found 33 matches

by HeLLoWorld
15 Jan 2014, 18:30
Forum: Area 51: Display Science, Research & Engineering
Topic: Need 1000fps@1000Hz for 1ms persistence without strobing
Replies: 19
Views: 26180

Re: Need 1000fps@1000Hz for 1ms persistence without strobing

At 30fps@120Hz you should have gotten 4 trailing images as your eyes tracked things.
Not really blur, but a sharp alphablended sum of spaced ghosting pictures :)
You could call it blur if you move slowly and they are spaced just from 1 pixel.

edit : our guest beated me to it.
by HeLLoWorld
15 Jan 2014, 17:33
Forum: Software Developers / Low-Lag Code / Game Programming
Topic: [programming] input lag in a barebones program
Replies: 9
Views: 15637

Re: [programming] input lag in a barebones program

Well wait I did't say it was the case, I just said it was possible :) I think some developers attain less lag so I'm just thinking of what could do a difference. More testing would be needed. You test the lag between mouse cursor and application by filming the screen at 60Hz and count the 60Hz frame...
by HeLLoWorld
15 Jan 2014, 16:48
Forum: Input Lag / Display Lag / Network Lag
Topic: Best way to test display lag?
Replies: 36
Views: 38170

Re: Best way to test display lag?

By the way I think it's fair to mention some people were already using the led + video (60Hz it seems) method to test frame lag in 2009 on consoles, there even were modded led controller devices.
http://www.eurogamer.net/articles/digit ... or-article
by HeLLoWorld
15 Jan 2014, 16:31
Forum: Input Lag / Display Lag / Network Lag
Topic: Best way to test display lag?
Replies: 36
Views: 38170

Re: Best way to test display lag?

I really believe it would be very good too, to be able to test input lag for mouse move. Although not very likely, there might be a difference compared to fire, be it in the mouse hardware or firmware or in the game engine (and what if game engine does not fire first frame etc) I know it is far less...
by HeLLoWorld
15 Jan 2014, 16:14
Forum: Input Lag / Display Lag / Network Lag
Topic: Best way to test display lag?
Replies: 36
Views: 38170

Re: Best way to test display lag?

hate to crush dreams :) but numlock and such are actually commanded by your main processor, this was already the case on a 8086! I was shocked too when I learnt that a long time ago! So there would be some uncertainity about the time of the roundtrip, potentially not negligible. If the keyboard has ...
by HeLLoWorld
15 Jan 2014, 15:42
Forum: Area 51: Display Science, Research & Engineering
Topic: DIY Backlight Strobing [must read for experimenters!]
Replies: 47
Views: 63239

Re: DIY Backlight Strobing [must read for experimenters!]

1000fps @ 1000Hz has only 1ms persistence, without needing to strobe. Yes obviously there's a point where things are basically solved but if we cant generate that much fps, hiddend sample and hold + strobing is superior to crt/oled scanning if it's as wide as the frame time. 1000fps @ 1000Hz has on...
by HeLLoWorld
15 Jan 2014, 15:22
Forum: Area 51: Display Science, Research & Engineering
Topic: DIY Backlight Strobing [must read for experimenters!]
Replies: 47
Views: 63239

Re: DIY Backlight Strobing [must read for experimenters!]

wow, I realize, which is to say, sample and hold (speaking of lcd alone, not constant backlight) is actually good, since strobing saves us from the effects we just discussed, and strobing is the only thing that can save us (scanning oleds and crts are screwed because of the instantaneous forgetting ...
by HeLLoWorld
15 Jan 2014, 14:59
Forum: Area 51: Display Science, Research & Engineering
Topic: DIY Backlight Strobing [must read for experimenters!]
Replies: 47
Views: 63239

Re: DIY Backlight Strobing [must read for experimenters!]

Just realized that randomized or algorithmic pattern order of the update of pixels in one frame (for multiplexed oled for example, crt is not doable and lcd-tft do not blink individually) (also suggested by Carmack if I remember) would unfortunately be very bad for this reason : it would randomly di...
by HeLLoWorld
15 Jan 2014, 13:26
Forum: Area 51: Display Science, Research & Engineering
Topic: DIY Backlight Strobing [must read for experimenters!]
Replies: 47
Views: 63239

Re: DIY Backlight Strobing [must read for experimenters!]

Curtain is by analogy to the curtain that fall in theaters at the end of a play btw, but it seems not to translate. Anyway even without having to explain these subtle effects, the mere fact the updates descend top down is intuitively not natural, the moving update line is maybe consciously or uncons...
by HeLLoWorld
15 Jan 2014, 13:21
Forum: Area 51: Display Science, Research & Engineering
Topic: DIY Backlight Strobing [must read for experimenters!]
Replies: 47
Views: 63239

Re: DIY Backlight Strobing [must read for experimenters!]

Yes, it's funny we need to further isolate the discretized "universe frames" even further, while real life is continuous, but that's because the frames stand for infinitely small moments, and the inbetween values we get are false, so best is to just send nothing rather than wrong; the mind will have...