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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Hector Martin‏ @marcan42 7 Apr 2019
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      Glasgow revC1 is pretty close to done! Hopefully it won't have any bugs this time :-)pic.twitter.com/41fyaZFK2m

      5 replies 12 retweets 89 likes
      Show this thread
    2. Hector Martin‏ @marcan42 7 Apr 2019
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      Hector Martin Retweeted Fiora @ 日本語でFF14

      Incidentally, that's @FioraAeterna's hack to stop Twitter from doing JPEG compression, though I improved upon her pattern through manual trial and error. I should write a program to automatically optimize it... or maybe it can be constructed analytically?https://twitter.com/FioraAeterna/status/1077786781133631489 …

      Hector Martin added,

      Fiora @ 日本語でFF14 @FioraAeterna
      how to defeat twitter's stupid PNG changes: take this image and tile it as a border around your image. crop it as you will (and feel free to color-adjust it), but don't resize it. save as PNG. make sure the border is thick enough that the PNG is smaller than an 85% quality JPEG. pic.twitter.com/Sh3ndjNHwz
      Show this thread
      3 replies 15 retweets 57 likes
      Show this thread
    3. Hector Martin‏ @marcan42 8 Apr 2019
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      Tweaked a few pixels to make it compress even worse. Can't say I understand exactly what's going on here; I did start from a basic premise of "doing crap on the luma channel on a 1x1 grid, on the chroma channel on a 2x2 grid" but after that it was just poking random pixels.pic.twitter.com/FoB3lQR58X

      2 replies 5 retweets 24 likes
      Show this thread
    4.  👼 Ąż 杏‏ @angealbertini 8 Apr 2019
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      Replying to @marcan42

      Can you make a drawing software/script with these restrictions? Asking for a friend who's potentially interested in compression-breaking pixel art ;)

      1 reply 0 retweets 5 likes
    5. Hector Martin‏ @marcan42 8 Apr 2019
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      Replying to @angealbertini

      Well, you can certainly do stuff like this (the only difference in the input images was the border, which in the second case made Twitter switch to PNG). Make sure to view them full size.pic.twitter.com/T63E0CNfSk

      1 reply 1 retweet 6 likes
      Hector Martin‏ @marcan42 8 Apr 2019
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      Replying to @marcan42 @angealbertini

      Hah, and look at what Android thumbnailing does to it!pic.twitter.com/30UaKYaZHY

      4:20 AM - 8 Apr 2019
      1 reply 0 retweets 0 likes
        1. New conversation
        1. Hector Martin‏ @marcan42 8 Apr 2019
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          Replying to @marcan42 @angealbertini

          And if you try applying image filters, the results are weird (and inconsistent with the preview)pic.twitter.com/VXuVruksAG

          1 reply 0 retweets 1 like
        2. Hector Martin‏ @marcan42 8 Apr 2019
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          Replying to @marcan42 @angealbertini

          More filter attempts using another app. Pretty unpredictable :-)pic.twitter.com/m8mjhiBGL4

          0 replies 1 retweet 7 likes
          3. End of conversation

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