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An introduction to Linux kernel initcalls

July 14, 2020 by Mylène Josserand  |   Blog

Initcalls, which serve to call functions during boot, were implemented early on in the development of the Linux Kernel. Read on as we take a closer look, including their purpose, their usage, ways to debug them (using initcall_debug or FTrace), and more.

An introduction to Linux kernel initcalls

Deep dive into OpenGL over DirectX layering

July 09, 2020 by Louis-Francis Ratté-Boulianne  |   Blog

Earlier this year, we announced a new project with Microsoft: the implementation of OpenCL & OpenGL to DirectX translation layers. Here's the latest on this work, including the steps taken to improve the performance of the OpenGL-On-D3D12 driver.

Deep dive into OpenGL over DirectX layering

Welcoming five new Collaborans!

July 09, 2020 by Erica Ryoo  |   News & Events

Despite the many obstacles brought on by the pandemic, Collabora continues to build and strengthen its engineering and administration teams for the road ahead. Join us in welcoming Angelica, Raghavendra, Doug, Italo and Theodotos!

Welcoming five new Collaborans!

Monado: Multi-application support with XR_EXTX_overlay

June 30, 2020 by Lubosz Sarnecki  |   News & Events

The recent improvements in Monado like out of process compositing and multi-layer rendering released with v0.2 prepared the requirements to implement OpenXR's XR_EXTX_overlay extension.

Monado: Multi-application support with XR_EXTX_overlay

Using syzkaller, part 4: Driver fuzzing

June 26, 2020 by Ricardo Cañuelo Navarro  |   Blog

Syzkaller is much needed tool for Linux kernel testing and debugging. With some work, it can also be enhanced to find bugs in specific drivers, such as V4L2. Here's how.

Using syzkaller, part 4: Driver fuzzing

Cross building Rust GStreamer plugins for the Raspberry Pi

June 23, 2020 by Guillaume Desmottes  |   Blog

Previously, we discussed about how Rust can be a great language for embedded programming. In this article, we'll explain an easy setup to cross build Rust code depending on system libraries, a common requirement when working on embedded systems.

Cross building Rust GStreamer plugins for the Raspberry Pi

Embedded Linux & Open Source take the virtual stage

June 18, 2020 by Mark Filion  |   News & Events

Collabora will be presenting on five separate occasions during the virtual editions of Embedded Linux Conference North America and Open Source Summit North America, taking place later this month.

Embedded Linux & Open Source take the virtual stage

Generating MPEG-DASH streams for Open Source adaptive streaming with GStreamer

June 12, 2020 by Stéphane Cerveau  |   Blog

Adaptive streaming is a technique to provide flexibility and scalability by offering variable bit-rate streams to the client. Here's a quick guide on how to generate a MPEG-DASH stream (the most completely adaptive streaming technique) using GStreamer.

Generating MPEG-DASH streams for Open Source adaptive streaming with GStreamer

Bifrost meets GNOME: Onward & upward to zero graphics blobs

June 05, 2020 by Alyssa Rosenzweig  |   Blog

With only free software, a Mali G31 chip can now run Wayland compositors with zero-copy graphics, including GNOME 3. We can run every scene in glmark2-es2, 3D games like Neverball can be played, and video players mpv and Kodi are now supported.

Bifrost meets GNOME: Onward & upward to zero graphics blobs

Kernel 5.7: Forging ahead, despite COVID-19

June 04, 2020 by Andrzej Pietrasiewicz  |   News & Events

This latest release is the first to contain development work accomplished amid the lockdown measures. Despite these significant changes, Collaborans have also been steadfast in their contributions, with multiple projects progressing.

Kernel 5.7: Forging ahead, despite COVID-19

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!

Desktop OpenGL 3.1 on Mali GPUs with Panfrost

January 13, 2021 by Alyssa Rosenzweig  |   Blog

The open source Panfrost driver for Arm Mali Midgard and Bifrost GPUs now provides non-conformant OpenGL ES 3.0 on Bifrost and desktop OpenGL 3.1 on Midgard (Mali T760 and newer) and Bifrost, in time for Mesa's first release of 2021.

Desktop OpenGL 3.1 on Mali GPUs with Panfrost

Empathy first: Driving growth through people leadership

November 30, 2020 by Eleni Katsoula  |   Blog

This year, the global pandemic has put a strain on us all. Motivation can become hard to maintain, worries can cloud our minds. Now more than ever, it is important to try and connect with our colleagues.

Empathy first: Driving growth through people leadership

Developing Wayland Color Management and High Dynamic Range

November 19, 2020 by Pekka Paalanen  |   Blog

Wayland is still lacking proper consideration for color management & support for high dynamic range (HDR) imagery. However, a group of developers has begun an effort to fix this situation. This is their story.

Developing Wayland Color Management and High Dynamic Range

A summer sprint: bringing near-native performance to Zink

November 06, 2020 by Mike Blumenkrantz  |   Blog

This week marks two years since the OpenGL implementation on Vulkan was initially announced. Since then, and especially over the past few months, much has progressed with many new features being added and performance now close to native (95%!).

A summer sprint: bringing near-native performance to Zink

From Panfrost to production, a tale of Open Source graphics

November 03, 2020 by Alyssa Rosenzweig  |   Blog

Since our previous update on Panfrost, the open source stack for Arm's Mali Midgard and Bifrost GPUs, we've focused on taking our driver from its reverse-engineered origins on Midgard to a mature stack.

From Panfrost to production, a tale of Open Source graphics

Engaging in an "Open First" remote internship at Collabora

October 20, 2020 by Gustavo Noronha  |   Blog

The concept of a remote internship may raise some doubts, or even red flags, for many students, as would remote jobs for professionals. As a result, we pay extra attention to how we onboard and support our interns.

Engaging in an "Open First" remote internship at Collabora

Building GStreamer text rendering and overlays on Windows with gst-build

September 28, 2020 by Aaron Boxer  |   Blog

GStreamer relies on various 2D font rendering and layout libraries such as Pango and Cairo to generate text for the Pango plugin, which contains elements such as textoverlay. Here's how to add the Pango plugin to a gst-build installation on Windows.

Building GStreamer text rendering and overlays on Windows with gst-build

Initcalls, part 2: Digging into implementation

September 25, 2020 by Mylène Josserand  |   Blog

In this second part of this blog post series on Linux kernel initcalls, we'll go deeper into implementation, with a look at the colorful __device_initcall() macro, the rootfs initcall, and how modules can be executed.

Initcalls, part 2: Digging into implementation

Open Source meets Super Resolution, part 1

September 21, 2020 by Marcus Edel  |   Blog

Introducing an accurate and light-weight deep network for video super-resolution upscaling, running on a completely open source software stack using Panfrost, the free and open-source graphics driver for Mali GPUs.

Open Source meets Super Resolution, part 1

Integrating libcamera into PipeWire

September 11, 2020 by Raghavendra Rao  |   Blog

PipeWire continues to evolve with the recent integration of libcamera, a library to support complex cameras. In this blog post, I'll explain why libcamera exists, what it does, and how we integrated it in PipeWire.

Integrating libcamera into PipeWire

Pushing pixels to your Chromebook

August 31, 2020 by Emil Velikov  |   Blog

A high-level introduction of the Linux graphics stack, how it is used within ChromeOS, and the work done to improve software rendering (while simultaneously improving GPU rendering by reducing the boilerplate needed in applications).

Pushing pixels to your Chromebook

Using the Linux kernel's Case-insensitive feature in Ext4

August 27, 2020 by Gabriel Krisman Bertazi  |   Blog

Last year, a (controversial) feature was added to the Linux kernel to support optimized case-insensitive file name lookups in the Ext4 filesystem. Here's a look at why this was merged, what improvements have been made since, and how to put it to work.

Using the Linux kernel's Case-insensitive feature in Ext4

Open Source Summit + Embedded Linux Conference 2021

September 24, 2021 by Mark Filion  |   News & Events

Collaborans will be actively participating in next week's activities with seven talks on topics including Rust build scripts, embedded deep learning on GStreamer, HEVC decoding on mainline Linux, PipeWire and WirePlumber, and more.

Open Source Summit + Embedded Linux Conference 2021

Panfrost achieves OpenGL ES 3.1 conformance on Mali-G52

September 21, 2021 by Alyssa Rosenzweig  |   News & Events

This important milestone is a step forward for the open source driver, as it now certifies Panfrost for use in commercial products containing Mali G52 and paves the way for further conformance submissions on other Mali GPUs.

Panfrost achieves OpenGL ES 3.1 conformance on Mali-G52

Generate a minimal GStreamer build, tailored to your needs

September 16, 2021 by Stéphane Cerveau  |   News & Events

GStreamer can be tricky to ship in a constrained device. Thanks to a partnership with Huawei, you can now use gst-build to generate a minimal GStreamer build, tailored to a specific application, or set of applications. Here's how.

Generate a minimal GStreamer build, tailored to your needs

Kernel 5.14: 30 years in the making and still improving

September 07, 2021 by Nícolas F. R. A. Prado  |   News & Events

With an ever-increasing interest in more modern hardware support, and a more reliable kernel that is thoroughly tested, contributions by Collabora's developers continue to help make this a reality for the Linux kernel.

Kernel 5.14: 30 years in the making and still improving

Linaro Virtual Connect - Fall 2021

September 01, 2021 by Mark Filion  |   News & Events

September's busy conference schedule kicks off next week with the Fall edition of Linaro Virtual Connect. Join us as we look at how to master your PipeWire streams with WirePlumber, and de-mystify GFX virtualization with VirGL!

Linaro Virtual Connect - Fall 2021

Reverse-engineering the Mali G78

July 20, 2021 by Alyssa Rosenzweig  |   News & Events

After a month of reverse-engineering the Arm Mali G78, we’re excited to release documentation on the Valhall instruction set, available as a PDF, as well as a Valhall assembler and disassembler to be used as a reverse-engineering aid.

Reverse-engineering the Mali G78

Kernel 5.13: Growing team and KernelCI hackfest

July 08, 2021 by Gabriel Krisman Bertazi  |   News & Events

Collabora's team working directly on the Linux kernel is growing. Collaborans continue to expand on their efforts to close the gap between hardware support on vendor trees and mainline.

Kernel 5.13: Growing team and KernelCI hackfest

A very successful first KernelCI hackfest

June 21, 2021 by Shreeya Patel  |   News & Events

Earlier this month, Collabora took part in the very first KernelCI hackfest, initiated as a joint effort with the Google Chrome OS team. Here's a look at what led to our participation and what was accomplished.

A very successful first KernelCI hackfest

Growing for the road ahead

June 21, 2021 by Erica Ryoo  |   News & Events

Despite the many obstacles brought on by the pandemic, Collabora has continued to grow its teams for the road ahead. Join us in welcoming Kiril, Benjamin, Daniel, Shreeya, Ariel, Nicolas and James!

Growing for the road ahead

Wine on Wayland meets Vulkan, multi-monitor support & more

June 07, 2021 by Alexandros Frantzis  |   News & Events

We first announced our work on the driver last December, and posted an update earlier this year. We are now happy to announce a second update for this driver, adding several major features which increase its scope and utility.

Wine on Wayland meets Vulkan, multi-monitor support & more

A libweston-based compositor for Automotive Grade Linux

June 02, 2021 by Marius Vlad  |   News & Events

Simplifying AGL's existing Wayland-based graphical stack and avoiding the use of modules that aren't maintained upstream has lead to the creation of a new compositor based on libweston, bringing more reliable and fine-grained system control.

A libweston-based compositor for Automotive Grade Linux

Bridging the OpenGL and Vulkan divide

May 27, 2021 by Rohan Garg  |   News & Events

Thanks to a new, low overhead extension in Mesa, OpenGL and Vulkan applications can now talk to each other, bringing more flexibility to application developers while easing the transition path between the industry-standard Khronos® APIs.

Bridging the OpenGL and Vulkan divide

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Arm DevSummit 2021

19-21 October, Online

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