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Mozilla Gfx Team Blog
Company blog · mozillagfx.wordpress.comprogrammingsystems
Mozilla Gfx Team Blog is the company blog at mozillagfx.wordpress.com, writing about programming and systems. Since 2013, 63 different Hacker News readers have linked it 110 times, most often “Dramatically reduced power usage in Firefox 70 on macOS with Core Animation”. It is still writing: the last post was on 2026-07-14, and you can follow it by feed.
Most-linked posts?
- Dramatically reduced power usage in Firefox 70 on macOS with Core Animation18 people · 19 mentions · first linked 2019-10-22
- /5 people · 5 mentions · first linked 2018-01-23
- Shipping WebGPU on Windows in Firefox 1414 people · 4 mentions · first linked 2025-07-15
- Off-Main-Thread painting4 people · 4 mentions · first linked 2017-12-05
- Moz: //Gfx Newsletter #513 people · 3 mentions · first linked 2020-03-02
- Firefox 94 to start using EGL on Linux3 people · 3 mentions · first linked 2021-10-30
- Graphics Team ships WebRender MVP3 people · 3 mentions · first linked 2019-05-21
- Introduction to WebRender3 people · 3 mentions · first linked 2017-09-21
- Firefox WebRender Newsletter #102 people · 3 mentions · first linked 2017-11-27
- WebRender newsletter #92 people · 2 mentions · first linked 2017-11-06
What Hacker News says?
Hard to say. It's actually already in stable but currently limited to a very specific set of OS/hardware combinations and they're working on gradually adding more. FF67 enabled it in stable for desktop NVIDIA hardware on Windows. AMD and Intel GPUs on Windows and Linux are currently enabled in the nightly channel, presumably MacOS is next on the list once those are stable. Webrender is mostly done and at the stage w…
Comment linking /2019/05/21/graphics-team-ships-webrender-mvp/
on “Switch from Chrome to Firefox”Submitted Dramatically reduced power usage in Firefox 70 on macOS with Core Animation as a story · 526 points
HN discussionSee https://mozillagfx.wordpress.com/2019/10/22/dramatically-red... More work is planned to reduce the energy usage for scrolling and full screen video. Though I guess for your example you don't watch things fullscreen.
Comment linking /2019/10/22/dramatically-reduced-power-usage-in-firefox-70-on-macos-with-core-animation/
on “Firefox 70”Submitted Firefox 94 to start using EGL on Linux as a story · 427 points
HN discussionMore details on the mac improvements https://mozillagfx.wordpress.com/2019/10/22/dramatically-red...
Comment linking /2019/10/22/dramatically-reduced-power-usage-in-firefox-70-on-macos-with-core-animation/
on “Firefox 70”Submitted Help the Graphics team track down an interesting WebRender bug as a story · 427 points
HN discussionFYI, firefox is working on switching to rendering the entire page in opengl which should bring it's motion mark score up substantially. Details on that (and how to enable it in nightly at the bottom of each post) at https://mozillagfx.wordpress.com
Comment linking /
on “Firefox is back. It's time to give it a try”Submitted Shipping WebGPU on Windows in Firefox 141 as a story · 384 points
HN discussionYea they fixed it: - https://mozillagfx.wordpress.com/2019/10/22/dramatically-red... - https://www.zdnet.com/article/upcoming-firefox-update-will-d... Give it a go again!
Comment linking /2019/10/22/dramatically-reduced-power-usage-in-firefox-70-on-macos-with-core-animation/
on “How to fight back against Google AMP as a web user and a web developer”Submitted WebRender is in beta as a story · 242 points
HN discussion> With FF, even using ublock and even a pihole, the fan was constantly at full throttle. Is that still the case even with FFs recent update to version 70[1]? [1]: https://mozillagfx.wordpress.com/2019/10/22/dramatically-red...
Comment linking /2019/10/22/dramatically-reduced-power-usage-in-firefox-70-on-macos-with-core-animation/
on “Brave launches 1.0”Submitted Introduction to WebRender as a story · 175 points
HN discussionAFAIK it's enabled by default in Nightly for some desktop Windows users. There's an about:config pref that others can use to enable it. Follow the WebRender blog for more information: https://mozillagfx.wordpress.com/
Comment linking /
on “Firefox 64 Released”Submitted Firefox: Retained Display Lists as a story · 145 points
HN discussionDid it not get better with FF 70 for you? They switched the rendering to use a better API on MacOS: https://mozillagfx.wordpress.com/2019/10/22/dramatically-red...
Comment linking /2019/10/22/dramatically-reduced-power-usage-in-firefox-70-on-macos-with-core-animation/
on “Using Firefox for a faster, calmer and distraction-free internet”Submitted WebRender newsletter as a story · 142 points
HN discussionYep, here are all the change you have to do in `about:config`: https://mozillagfx.wordpress.com/2017/09/25/webrender-newsle...
Comment linking /2017/09/25/webrender-newsletter-5/
on “Firefox Quantum Lands in Beta, Developer Edition”Submitted Graphics Team ships WebRender MVP as a story · 139 points
HN discussionThere's more steps necessary to enable WebRender in full capacity. I presume, though, that things are buggier then and the potentially introduced performance drops might actually make it feel slower for now. I don't know, though, I haven't tested it with just gfx.webrender.enabled. You can find the current full list of steps to enable WebRender here: https://mozillagfx.wordpress.com/2017/09/25/webrender-newsle...
Comment linking /2017/09/25/webrender-newsletter-5/
on “The web at maximum FPS: How WebRender gets rid of jank”Submitted Off-Main-Thread painting as a story · 76 points
HN discussionFirefox and Gecko has a lot of tech debt, and it's big. It'd be too risky to just try to throw big chunks of it out and hope that the replacement will be great. Though the momentum seems lost, the WebRender integration is still ongoing. ( https://mozillagfx.wordpress.com/2018/11/29/webrender-newsle... ) And it's big, it's complex, it's hairy, the web is a mess. So, it's slow and full of terrors. (Shaders, caching, m…
Comment linking /2018/11/29/webrender-newsletter-32/
on “Firefox desktop market share now below 9%”Submitted WebRender newsletter as a story · 34 points
HN discussionWe're currently rewriting most of the graphics rendering of Firefox (with what is called the WebRender project). This is the first time Linux users will have hardware accelerated rendering by default, and is a pre-requisite to take real advantage of hardware-accelerated video decoding. It's enabled on some configuration in Nightly builds [0], and it's being worked on actively. If you want to know more, the graphics…
Comment linking /
on “Firefox 72.0”Submitted WebRender newsletter #18 as a story · 22 points
HN discussionIt's hilarious how a macOS-lookalike desktop environment is using Linux-like technologies like Openbox and KWin, rather than building something in Cocoa. I suspect it will cause trouble trying to bodge KWin to have Mac-like window management, or support apps that integrate with Apple's graphical acceleration and compositing frameworks (Core Animation? https://mozillagfx.wordpress.com/2019/10/22/dramatically-red... ).
Comment linking /2019/10/22/dramatically-reduced-power-usage-in-firefox-70-on-macos-with-core-animation/
on “Airyx OS”Submitted Off-Main-Thread Painting as a story · 12 points
HN discussionIt's only on nightly and still buggy on certain chipsets. At home I have a Kaby Lake system and using WebRender for daily browsing without problems. At work I use a Skylake system which has trouble with some sites, such as https://tradingview.com If you want to read the latest info, there is a good status post from a couple of days ago: https://mozillagfx.wordpress.com/2017/11/27/webrender-newsle...
Comment linking /2017/11/27/webrender-newsletter-10/
on “How Stylo Brought Rust and Servo to Firefox”Submitted WebRender is now enabled by default for some Firefox Nightly users as a story · 4 points
HN discussionI led the Stylo project to integrate Servo's CSS engine into Firefox as part of project Quantum [1]. I have the utmost respect for the engineers on the Servo team, and am sad to see them go (though I am certain they will have no shortage of opportunities as to what to work on next). Servo had two major roles within Mozilla - as an incubator for novel browser technology we wanted to ship in Firefox, and more recently…
Comment linking /
on “What's the future of Servo?”Submitted Retained Display Lists as a story · 4 points
HN discussion
