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pcwalton's profile
Patrick Walton
Patrick Walton
Patrick Walton
@pcwalton

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Patrick Walton

@pcwalton

Research engineer at Mozilla

San Francisco, CA
pcwalton.github.io
Joined November 2009

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    1. Peter Steinberger‏ @steipete Feb 18
      • Report Tweet
      • Report NetzDG Violation

      "UILabels are actually stored as bitmaps, which could easily consume megabytes of memory. If you have labels that you sometimes set to hidden, set their text value to nil when they are no longer visible.” https://www.fadel.io/blog/posts/ios-performance-tips-you-didnt-know/ …

      9 replies 179 retweets 656 likes
    2. James Campbell‏ @jcampbell_05 Feb 18
      • Report Tweet
      • Report NetzDG Violation
      Replying to @steipete

      I would actually love to know why it's done this way 😀

      2 replies 0 retweets 1 like
    3. Nick Lockwood‏ @nicklockwood Feb 18
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      Replying to @jcampbell_05 @steipete

      Why text is stored as a bitmap? Because rendering text from it's original vector representation is super-expensive and AFAIK can't yet be done perfectly in real-time on the gpu, so it makes sense to cache the result whenever practical.

      5 replies 0 retweets 34 likes
    4. Rama  🌿‏ @ramalovespandas Feb 18
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      Replying to @nicklockwood @jcampbell_05 @steipete

      WPF was able to render text in hardware on DX9 class hardware. I’m not entirely sure how it was done, but it used shaders to apply sub pixel anti-aliasing.

      2 replies 0 retweets 1 like
    5. Robin Kunde‏ @robinkunde Feb 18
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      Replying to @ramalovespandas @nicklockwood and

      There’s also Slug now https://sluglibrary.com 

      1 reply 0 retweets 3 likes
    6. Nick Lockwood‏ @nicklockwood Feb 18
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      Replying to @robinkunde @ramalovespandas and

      Nick Lockwood Retweeted Eric Lengyel

      Yeah, Apple tried to acquihire the developer, so I guess it's solving a hard problem:https://twitter.com/EricLengyel/status/1160334568194396160?s=20 …

      Nick Lockwood added,

      Eric Lengyel @EricLengyel
      About three months ago, Apple tried to acquire my company so they could have the Slug font rendering library. For various reasons, I said no.
      3 replies 1 retweet 11 likes
    7. Phil Dennis-Jordan‏ @pmjordan Feb 18
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      Replying to @nicklockwood @steipete and

      I seem to remember @pcwalton working on this for servo, no idea if the result of that work is usable independently.

      1 reply 0 retweets 1 like
    8. Patrick Walton‏ @pcwalton Feb 18
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      Replying to @pmjordan @nicklockwood and

      Yes, of course it’s usable independently :)http://github.com/servo/pathfinder …

      1 reply 3 retweets 11 likes
      Patrick Walton‏ @pcwalton Feb 18
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      Replying to @pcwalton @pmjordan and

      For what it’s worth, I no longer believe that vector rendering on GPU is a hard problem. It’s really quite simple. Most of the difficulty comes from the temptation to overengineer it.

      2:10 PM - 18 Feb 2020
      • 6 Likes
      • Niall McCormack Kyle Howells robb Phil Dennis-Jordan James Campbell Nick Lockwood
      0 replies 0 retweets 6 likes

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