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A comment on Typometer: A tool to measure and analyze the visual latency of text editors. Parent comment

Re:Typometer: A tool to measure and analyze the visual laten... by ce4 on Sunday July 26, 2020 @12:06AM (#23954356)
The NES-CRT connection is analog and the screen is drawn line by line, if you connect a digital monitor that will have to be buffered and you get some delay/lag of min 1 frame.
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Re:Typometer: A tool to measure and analyze the visual laten... by mrob on Sunday July 26, 2020 @05:35AM (#23955716)
Most LCDs only buffer a single line at a time:

https://www.youtube.com/watch?v=wts8f1bNnbo

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Re:Typometer: A tool to measure and analyze the visual laten... by formerly_proven on Sunday July 26, 2020 @08:18AM (#23956547)
You misunderstand the video. A LCD controller must buffer at least one line, because the LCD matrix is updated line for line, all columns in parallel -- it's a matrix, much like a RAM matrix. However, the video just shows how the LCD is scanned out, it doesn't say anything about the buffering of the controller. A lot of non-gaming LCDs, and virtually all older non-gaming LCDs, buffer an entire frame, even if they are driven in their native mode.
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