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      "post_id": "1688491417109196800",
      "author": "NOTimothyLottes",
      "handle": "NOTimothyLottes",
      "text": "CRT emulation on LCDs can be hard. For example it's often easy to generate a pattern that causes a LCD hardware bug. NOT joking. Here is an example on the Steam Deck. The pattern in the window affects the scan (Deck scan is rotated) outside the window.",
      "timestamp": "2023-08-07 10:04:59",
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      "post_id": "1688492237775142912",
      "author": "NOTimothyLottes",
      "handle": "NOTimothyLottes",
      "text": "The actual pattern is this (it's a 2x1 pixel checker of {G,RB}).",
      "timestamp": "2023-08-07 10:08:14",
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      "post_id": "1688493686554849280",
      "author": "NOTimothyLottes",
      "handle": "NOTimothyLottes",
      "text": "The theory: Deck's 90deg scan results in {(bottom)R, G, B (top)} sub-pixel components. So could alternate {G,RB} only per pixel in a checker pattern to generate a new sub-pixel pattern at a different resolution. In this case trying for 640x400 virtual resolution.",
      "timestamp": "2023-08-07 10:14:00",
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      "post_id": "1688494811366506496",
      "author": "NOTimothyLottes",
      "handle": "NOTimothyLottes",
      "text": "For virtual pixel, shift energy into masked virtual phosphor. So 50% brightness red, would be {100%, 0%} for {in, out} of phosphor pixels. Over 50% one starts to increase non-phosphor pixels until some maximum so mask is still visible, but brightness isn't too compromised.",
      "timestamp": "2023-08-07 10:18:28",
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      "post_id": "1688496100460605442",
      "author": "NOTimothyLottes",
      "handle": "NOTimothyLottes",
      "text": "Of course this is done in linear, so it's energy conserving in theory. But when the panel fails, it breaks down and doesn't work. I see this problem on a bunch of different devices. My personal AMD laptop has the exact same fail case (but rotated differently).",
      "timestamp": "2023-08-07 10:23:35",
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      "post_id": "1689479056448684032",
      "author": "Blur Busters",
      "handle": "BlurBusters",
      "text": "@NOTimothyLottes Very interesting \"crosstalk from voltage inversion\" artifact. Some repeating patterns or flicker patterns can trigger crosstalk artifacts too. Behavior varies a lot between TN, IPS, and VA, but all of them have to alternate voltage polarity spatially and temporally.",
      "timestamp": "2023-08-10 03:29:30",
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