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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.  👼 Ąż 杏‏ @angealbertini 30 May 2017
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      funny trick abusing resizing via a mask https://twitter.com/marcan42/status/869597995674648576 …pic.twitter.com/Zha5tLCt8B

      2 replies 2 retweets 12 likes
    2. Hector Martin‏ @marcan42 30 May 2017
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      Replying to @angealbertini

      But the left image is from the original merge that someone else did, which borks up the gamma (also it's brightened?). Mine looks better :)pic.twitter.com/YlD5n0uzWr

      1 reply 0 retweets 0 likes
    3. Hector Martin‏ @marcan42 30 May 2017
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      Replying to @marcan42 @angealbertini

      Sadly this trick doesn't work on Twitter, so there's no way to show it "properly" here (those are 2x downscaled "simulations")

      1 reply 0 retweets 1 like
    4.  👼 Ąż 杏‏ @angealbertini 31 May 2017
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      Replying to @marcan42

      even with a transparent pixel somewhere (to prevent some kinds of conversion)?

      1 reply 0 retweets 0 likes
    5. Hector Martin‏ @marcan42 31 May 2017
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      Replying to @angealbertini

      Yeah, it still strips the PNG headers, sadly. OTOH, you can play a different game (with transparency) on Twitter.pic.twitter.com/5VUzG8eVev

      1 reply 0 retweets 4 likes
    6. Hector Martin‏ @marcan42 31 May 2017
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      Replying to @marcan42 @angealbertini

      That one's a one-liner: convert $a $b -colorspace Gray -alpha on -channel alpha -fx "(1-v.r+u.r)/2" -channel rgb -fx "u.r/u.a/2" output.png

      1 reply 0 retweets 1 like
    7.  👼 Ąż 杏‏ @angealbertini 31 May 2017
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      Replying to @marcan42

      not new, but well implemented... and still the same kind of images ;)

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 31 May 2017
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      Replying to @angealbertini

      Hey, I didn't pick them, someone on Reddit started it ;) (neither of these tricks is new, though the former is more interesting technically)

      1:39 AM - 31 May 2017
      1 reply 0 retweets 0 likes
        1. Hector Martin‏ @marcan42 31 May 2017
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          Replying to @marcan42 @angealbertini

          Sadly this doesn't work on mobile if you're using Night Mode (and who isn't?)

          0 replies 0 retweets 1 like
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