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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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    Patrick Walton‏ @pcwalton 13 Oct 2019
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    • Report NetzDG Violation

    I highly suspect the fill rate gains you get from using DirectComposition/Core Animation for scrolling/zooming *static* vector graphics in 2D completely outweigh any gains from any fancy GPU vector rendering algorithm you could come up with in practice.

    11:17 AM - 13 Oct 2019
    • 2 Retweets
    • 13 Likes
    • Akhil Indurti Antony Courtney Peter Bay Bastian David Bonet Ezekiel Pierson Random Firefox User Luca Barbato Rhaladriel Ganesh Sethu
    2 replies 2 retweets 13 likes
      1. New conversation
      2. gankra's gay‏ @Gankra_ 13 Oct 2019
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        Replying to @pcwalton

        agreed but it's a weird comparison to make, given you can just do both? just sad about where we've focused our resources?

        1 reply 0 retweets 1 like
      3. Patrick Walton‏ @pcwalton 13 Oct 2019
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        Replying to @Gankra_

        Oh, I'm not sad at all! I'm actually very excited about the WebRender/Pathfinder roadmap for the reason you state: we should do both. Really I'm just pointing out a blind spot of most vector graphics research. If a technique has no OS compositor story it's a severe problem.

        1 reply 0 retweets 3 likes
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      2. Aria Minaei‏ @ariaminaei 13 Oct 2019
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        Replying to @pcwalton

        Noob question: Isn't zooming with DirectCompositon/CoreAnimation texture-based? I thought one benefit of something like Pathfinder is that things look sharp on every frame.

        1 reply 0 retweets 0 likes
      3. Patrick Walton‏ @pcwalton 13 Oct 2019
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        Replying to @ariaminaei

        It's not clear to me that precise vector rendering on every frame is worth the power/performance cost compared to trilinear (or even bilinear) filtering. That said, when you do need to draw tiles you obviously want to go as fast as possible and that's where Pathfinder shines.

        1 reply 0 retweets 2 likes
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