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Metrics for test suite comprehensiveness

November 23, 2018 by Alexandros Frantzis  |   Blog

How can we measure the comprehensiveness of a test suite? Code coverage is the standard metric used in the industry and makes intuitive sense. However, it can often present some difficulties for large scale surveys.

Metrics for test suite comprehensiveness

Gaining eBPF vision: A new way to trace Linux filesystem disk requests

November 21, 2018 by Gabriel Krisman Bertazi  |   Blog

A real-world use case of eBPF tracing to understand file access patterns in the Linux kernel and optimize large applications.

Gaining eBPF vision: A new way to trace Linux filesystem disk requests

FOSS in Toulouse

November 16, 2018 by Mark Filion  |   News & Events

After a great time in Vancouver, Collaborans are headed this weekend to southern France to attend and speak at the 2018 edition of Capitole du Libre, a weekend dedicated to free and Open Source software!

FOSS in Toulouse

Linux Plumbers in Vancouver

November 12, 2018 by Mark Filion  |   News & Events

Widely recognized as the premier event for developers working at all levels of the Linux kernel's plumbing layer and beyond, this year's edition of LPC is jam-packed with microconferences, a refereed track, a Kernel Summit track, multiple BoFs, and more.

Linux Plumbers in Vancouver

Daniel Stone featured in Linux Format!

November 07, 2018 by Mark Filion  |   News & Events

While our regular column (this time on Video4Linux, written by Ezequiel Garcia) is alive and well in this month's issue of LXF, there's also something else worth highlighting: a 6-page interview with none other than Collabora's Graphics lead, Daniel Stone!

Daniel Stone featured in Linux Format!

Quick hack: Speed up your GitLab CI

November 06, 2018 by Xavier Claessens  |   Blog

Did you know you could register your own PC, or a spare laptop collecting dust in a drawer, to get instant CI going on GitLab? Not only will you get faster CI, but you'll also reduce the queue on the shared runner for others!

Quick hack: Speed up your GitLab CI

Introducing Zink, an OpenGL implementation on top of Vulkan

October 31, 2018 by Erik Faye-Lund  |   Blog

For the last month or so, I've been playing with a new project during my work at Collabora, and as I've already briefly talked about at XDC 2018, it's about time to talk about it to a wider audience.

Introducing Zink, an OpenGL implementation on top of Vulkan

Edinburgh, continued!

October 25, 2018 by Mark Filion  |   News & Events

After three great days attending and catching up with the community at ELCE, Collaborans are continuing their stay in Edinburgh to take part in the GStreamer Conference & Hackfest, the Linux Media Summit and the Automated Testing Summit.

Edinburgh, continued!

Linux Kernel 4.19

October 22, 2018 by Helen Koike  |   News & Events

As the curtains rose on opening day of Embedded Linux Conference Europe & Open Source Summit Europe in Edinburgh, the latest release of the Linux Kernel, 4.19, was made available by Greg Kroah-Hartman. Collaborans were once again very active.

Linux Kernel 4.19

On the low adoption of automated testing in FOSS

October 18, 2018 by Alexandros Frantzis  |   Blog

For projects of any value and significance, having a comprehensive automated test suite is nowadays considered a standard software engineering practice. Why, then, don't we see more prominent FOSS projects employing this practice?

On the low adoption of automated testing in FOSS

Embedded Linux in Edinburgh

October 18, 2018 by Mark Filion  |   News & Events

Next week, Collabora will be sponsoring, exhibiting & speaking at Embedded Linux Confererence Europe in Edinburgh, Scotland. Now in its 13th year, ELCE is the premier vendor-neutral technical conference for companies and developers using embedded Linux.

Embedded Linux in Edinburgh

Automotive Grade Linux AMM

October 15, 2018 by Mark Filion  |   News & Events

This week, two Collaborans will be in Dresden, Germany to take part in the AGL All Member Meeting. George Kiagiadakis and Daniel Stone will be in attendance, with the former also giving a presentation on the latest happenings in upstream multimedia.

Automotive Grade Linux AMM

How to write a Vulkan driver in 2022

March 23, 2022 by Jason Ekstrand  |   Blog

An incredible amount has changed in Mesa and in the Vulkan ecosystems since we wrote the first Vulkan driver in Mesa for Intel hardware back in 2015. Not only has Vulkan grown, but Mesa has as well.

How to write a Vulkan driver in 2022

Improving the reliability of file system monitoring tools

March 14, 2022 by Gabriel Krisman Bertazi  |   Blog

Every file system used in production has tools to try to recover from system crashes. To provide a better infrastructure for those tools, our kernel team developed FAN_FS_ERROR, a new fanotify event which monitors error notifications.

Improving the reliability of file system monitoring tools

PipeWire: A year in review & a look ahead

March 08, 2022 by George Kiagiadakis  |   Blog

The PipeWire project made major strides over the past few years, bringing shiny new features, and paving the way for new possibilities in the Linux multimedia scene. A look what was accomplished in 2021, and what lies ahead for 2022.

PipeWire: A year in review & a look ahead

Landing a new syscall, part 1: What is futex?

February 08, 2022 by André Almeida  |   Blog

Over the past 18 months, we have been on a roller-coaster ride developing futex2, a new set of system calls. As part of this effort, the futex_waitv() syscall has now landed in Linux 5.16. But what exactly is futex?

Landing a new syscall, part 1: What is futex?

Writing an open source GPU driver - without the hardware

January 27, 2022 by Alyssa Rosenzweig  |   Blog

Until now, no Valhall devices (Mali-G57, Mali-G78) ran mainline Linux - whilst this made driver development obviously difficult, there’s no better time to write drivers than before the devices even get into the hands of end users.

Writing an open source GPU driver - without the hardware

A Pixel's Color & new documentation repository

January 25, 2022 by Pekka Paalanen  |   Blog

My work on Wayland and Weston color management and HDR support has been full of learning new concepts and terms. Many of them are crucial for understanding how color works, and what the values in a pixel actually mean.

A Pixel's Color & new documentation repository

Wine on Wayland year-end update: improved functionality & stability

December 22, 2021 by Alexandros Frantzis  |   Blog

It has been just over a year since we first announced our effort to implement a Wayland driver for Wine. Here's a recap of what has been done since then to improve both the functionality and stability of the driver.

Wine on Wayland year-end update: improved functionality & stability

Venus on QEMU: Enabling the new virtual Vulkan driver

November 26, 2021 by Antonio Caggiano  |   Blog

A step-by-step guide on how to enable 3D acceleration of Vulkan applications in QEMU through the new Venus experimental Vulkan driver for VirtIO-GPU with a local development environment.

Venus on QEMU: Enabling the new virtual Vulkan driver

Run your own CI pipeline with GStreamer's new monorepo

October 26, 2021 by Xavier Claessens  |   Blog

Maintaining a non-trivial set of GStreamer patches can be tricky. Thanks to the recent move to a single, unified git repo, you can now easily run a GStreamer continuous integration pipeline on your own GitLab instance. Here's how.

Run your own CI pipeline with GStreamer's new monorepo

Improving test coverage for cameras in KernelCI

October 08, 2021 by Nícolas F. R. A. Prado  |   Blog

Earlier this year, I joined Collabora as an intern to work on improving testing in libcamera and automating it through KernelCI. Having recently completed the internship, here's a look back at this experience and what was accomplished.

Improving test coverage for cameras in KernelCI

A tale of two toolchains and glibc

September 30, 2021 by Adrian Ratiu  |   Blog

With the LLVM toolchain seeing increasing development and adoption alongside the older, more established GNU toolchain, projects needing to support both, in particular the GNU C library (glibc), are facing challenges and questions.

A tale of two toolchains and glibc

An xrdesktop summer of code

September 10, 2021 by Lubosz Sarnecki  |   Blog

This summer, Christoph Haag and I had the pleasure of taking part in Google Summer of Code as mentors for xrdesktop, the Open Source project bringing the Linux desktop to VR on Valve's SteamVR & Monado. Here's what was accomplished.

An xrdesktop summer of code

Google Summer of Code 2020

June 01, 2020 by Mark Filion  |   News & Events

Coding hss begun for this year's Google Summer of Code (GSoC) projects, announced earlier last month. The 2020 edition selected 1,199 students from 66 countries, to work with 199 mentoring organizations over the course of the summer.

Google Summer of Code 2020

Monado OpenXR runtime development gaining momentum: version 0.2, multi-layer support & more!

May 29, 2020 by Jakob Bornecrantz  |   News & Events

With the excellent (online) edition of Augmented World Expo 2020 in full swing this week, what better time to announce version 0.2 of the Monado OpenXR runtime for Linux. It's been a very busy three months since the last Monado developer update!

Monado OpenXR runtime development gaining momentum: version 0.2, multi-layer support & more!

Laval Virtual: OpenXR master class in VR!

May 18, 2020 by Mark Filion  |   News & Events

A few weeks ago, Ryan Pavlik presented "Unifying Reality: Building Experiences with OpenXR", a master class on OpenXR, the open standard API for building VR and AR experiences that work across devices, now and into the future.

Laval Virtual: OpenXR master class in VR!

xrdesktop 0.14 with OpenXR support is here!

May 08, 2020 by Lubosz Sarnecki  |   News & Events

Sponsored by Valve, this latest release of the Open Source project which enables interaction with traditional desktop environments, such as GNOME and KDE, in VR, brings the largest amount of changes yet, with many new features and architectural improvements.

xrdesktop 0.14 with OpenXR support is here!

Service process and out of process compositing in Monado

April 30, 2020 by Lubosz Sarnecki  |   News & Events

A new monado-service binary and out of process compositor has landed in Monado, the fully Open Source OpenXR runtime for Linux! Here's a demo of the compositor's new abilities running with the new Blender OpenXR VR Session.

Service process and out of process compositing in Monado

Say hello to the newest Collaborans!

April 21, 2020 by Erica Ryoo  |   News & Events

In these times of disruption and uncertainty, how about some positive news for a change? Let's take a moment to celebrate the newest members of our engineering and administration teams: Mylène, Christopher, Melissa, Ricardo and Leandro!

Say hello to the newest Collaborans!

Projects and progress in Linux kernel 5.6

March 31, 2020 by Helen Koike  |   News & Events

Despite the challenges presented by COVID-19, Linux kernel development continues. Here's a look at the various projects Collaborans have been involved in, and the progress made in kernel 5.6, which was released over the weekend.

Projects and progress in Linux kernel 5.6

Linaro Tech Days: Wayland, Weston & Open Source GPU drivers

March 30, 2020 by Mark Filion  |   News & Events

This week, Daniel Stone and Tomeu Vizoso will be taking part in Linaro Tech Days, a series of technical sessions presented live online via Zoom webinar and streamed on YouTube. These sessions are free to attend and open to the public!

Linaro Tech Days: Wayland, Weston & Open Source GPU drivers

Introducing OpenCL and OpenGL on DirectX

March 24, 2020 by Erik Faye-Lund  |   News & Events

Today, Collabora is excited to announce a partnership with Microsoft to build OpenCL and OpenGL mapping layers on DirectX, in order to bring OpenCL 1.2 and OpenGL 3.3 support to all Windows and DirectX 12 enabled devices.

Introducing OpenCL and OpenGL on DirectX

Monado OpenXR runtime developer update

February 25, 2020 by Jakob Bornecrantz  |   News & Events

Ever since announcing the project at GDC 2019, we have been working on improving the full open source XR stack to a usable state. Today, we are very happy to tag version 0.1 of the Monado OpenXR runtime for Linux!

Monado OpenXR runtime developer update

Low latency streaming of security video feeds with SRT and GStreamer

February 12, 2020 by Jakub Adam  |   News & Events

With the advent of 5G networks, it's now possible to stream high quality video in real-time with a very low latency that wasn't possible with the past generations of mobile networks.

Low latency streaming of security video feeds with SRT and GStreamer

Linux Kernel 5.5

January 30, 2020 by Sebastian Reichel  |   News & Events

With the 5.5 kernel released earlier this week, here's a detailed look at Collabora’s contributions, including work to improve upstream support of peripherals used together with the i.MX 6 family of processors.

Linux Kernel 5.5

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November 29 - December 1, New Orleans, USA

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