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In recent years we have had an ongoing effort to improve graphics performance of the WebKit GTK and WPE ports. As a result of this we shipped features like threaded rendering, the DMA-BUF renderer, or proper vertical retrace synchronization (VSync). While these improvements have helped keep WebKit competitive, and even perform better than other engines in some scenarios, it has been clear for a wh

This blog post introduces sched_ext, a recently proposed extensible scheduler class. sched_ext allows you to write and run your custom process scheduler optimized for your target workloads and hardware architectures using BPF programs. In the rest of the post, I recap the concept of a scheduler at the high level and go over the default schedulers in Linux kernel. Then, I introduce why an extensibl

This article is written by referring to the Multiple Page Architecture document. Motivation According to the Google Chromium team, some years ago it turned out that the BFCache(Back/Forward cache), Portals, Guest Views, and Prerender faced the same fundamental problem of having to support multiple pages in the same tab, but were implemented with different architecture models. BFCache and pending d

tl;dr: We are looking for feedback on the Temporal proposal. Try out the polyfill, and complete the survey; but don't use it in production yet! JavaScript Date is broken in ways that cannot be fixed without breaking the web. As the story goes, it was included in the original 10-day JavaScript engine hack and based on java.util.Date, which itself was deprecated in 1997 due to being a terrible API a

Igalia has been recently working on the implementation of css-contain in Chromium by providing some fixes and optimizations based on this standard. This is a brief blog post trying to give an introduction to the spec, explain the status of things, the work done during past year, and some plans for the future. What’s css-contain? # The main goal of CSS Containment standard is to improve the renderi

Since the beginning of the web we have been used to deal with physical CSS properties for different features, for example we all know how to set a margin in an element using margin-left, margin-right, margin-top and/or margin-bottom. But with the appearance of CSS Writing Modes features, the concepts of left, right, top and bottom have somehow lost their meaning. Imagine that you have some right-t

During the last months as part of my work in Igalia I’ve been focused on finishing the new/missing bits of the CSS Grid Layout Blink’s implementation related to items placement. In summary the task was mostly related to 2 things: Support implicit grid before explicit. So the grid can add tracks on demand not only on the growing direction (usually right/bottom) but also on the opposite one. Fix unk

After the review of the changes in the CSS Grid Layout spec in my previous post, let’s focus now in the status of the implementation in Blink and WebKit. This post will try to cover what we’ve been doing in Igalia during 2014 around grid layout, and it’ll talk about our plans for 2015. Work done in 2014 # Spec syntax # During the first part of the year we were updating the CSS Grid Layout syntax i