Raph Levien

@raphlinus

Mobile typographer. The opinions stated here are my own, not necessarily those of my employer.

Berkeley, CA
levien.com
Joined May 2009
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  1. Aug 17

    With undefined behavior, anything is possible. Now I explain what I meant, in some detail:

    2 replies 8 retweets 15 likes
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  2. Aug 15

    With undefined behavior, anything is possible. Express this idea visually by wearing my new unicorn and rainbow t-shirt:

    4 replies 17 retweets 67 likes
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  3. Jun 23

    My notes on “Lost in Math: How Beauty Leads Physics Astray” by :

    6 retweets 31 likes
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  4. May 10

    An idea for using GPGPU to parse JSON that probably isn't very practical:

    1 retweet 7 likes
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  5. May 8

    Some experiments writing GUI from scratch in Rust, using Entity-Component-System architecture:

    13 retweets 58 likes
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  6. Apr 25

    For hardcore fans of monoid homomorphisms, I present "A sketch of string unescaping on GPGPU":

    2 retweets 8 likes
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  7. Apr 16

    Oops, sorry about that, I did a server migration. I'll fix it when I get back to my home computer.

    access to inconsolataGO dir now gave an error.
    1 reply
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  8. Mar 29

    I'm meeting up with at 1pm on Apr 3 in SF near Embarcadero. Let me know if you're interested in being there and talking about helping more scientists run for office.

    1 like
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  9. Mar 13

    The video of Ron Minksy's Localhost talk on types and the use of functional languages in production is online:

    3 retweets 6 likes
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  10. Mar 6

    Yup, have been talking with and am open to working together. Very interested to see where their explorations take them!

    Have you seen ? It seems the Atom team has been looking at Xi 😄
    7 likes
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  11. Retweeted
    Mar 1

    WOFF 2.0 is now a W3C Recommendation! Congratulations to all who helped make this happen! I blogged about it

    1 reply 44 retweets 77 likes
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  12. Retweeted
    Mar 1

    Congrats to editors Vladimir Levantovsky for releasing WOFF2.0 as the 401st !

    WOFF 2.0 is now a W3C Recommendation! Congratulations to all who helped make this happen! I blogged about it
    1 reply 2 retweets 2 likes
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  13. Jan 30

    Here's the video of my talk on xi-editor. Enjoy!

    We're finally recording talks! Here's talking about Xi, a new, super fast text editor for the next 20 years.
    Show this thread
    2 replies 12 retweets 42 likes
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  14. Jan 23

    EGL_KHR_partial_update.txt in the OpenGL world, VK_KHR_incremental_present in Vulkan, IDXGISwapChain1::Present1 in DirectX, and "what you talkin bout willis" on Mac.

    Replying to @trishume @raphlinus
    I'm not familiar with the term "incremental present." Do you mean rendering a tile but clipping it and revealing the clipped part instead of rendering the newly revealed part?
    1 reply 1 like
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  15. Jan 23

    I ended up using NSOpenGLLayer rather than NSOpenGLView because certain things work better (like window corner masks without having to set transparency and smoother resize). But yeah, CPU memory is not a happy place for pixels to come from.

    Replying to @trishume @raphlinus
    Have a working OpenGL implementation, just Apple has bugs in NSOpenGLView (such as renderer changes when using NSFullSizeContentViewWindowMask), so trying various other approaches to work around them. Core Animation just can't push pixels fast enough from CPU memory.
    1 like
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  16. Jan 23

    What says is consistent with what I've observed, which is why the Mac front-end is now doing fairly straightforward OpenGL drawing, strongly inspired by alacritty, but customized to what we need.

    Replying to @wbond
    You should talk to . He’s currently working on what I assume is the same problem for . He has a nice >160FPS GL macOS text pane working with no jank and low latency.
    1 retweet 2 likes
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  17. Jan 23

    Thanks for inviting me! I had a great time speaking and felt a strong connection with the audience.

    Localhost : walking through the details of the 🚀 performance of Xi text editor.
    5 likes
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  18. Retweeted
    Jan 12

    Lovely to see Stanford's CS140e (an experimental course on operating systems) building an OS for with , which uses 's Container Cheat Sheet in its second class. 😊 🦀

    2 replies 2 retweets 15 likes
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  19. 13 Oct 2017

    What I’m working on at Recurse Center

    1 reply 1 retweet 17 likes
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  20. 8 Sep 2017

    I made a snowflake: . Would people like to see an animated explanation of the growth algorithm?

    4 replies 1 retweet 20 likes
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