Pekka Paalanen

This time I have three topics. First, I want to promote the blog post I wrote to celebrate the landing of the Wayland color-management e...

(This post was first published with Collabora on Jan 25, 2022.) A Pixel's Color My work on Wayland  and Weston color management and HDR...

(This post was first published with Collabora  on Nov 19, 2020.) (Fixed a broken link on Jan 28, 2021.) Wayland (the protocol and architectu...

Now is a high time to start discussing what you might want to do, for both student candidates and possible mentors. Students , have a look...

How is an uncompressed raster image laid out in computer memory? How is a pixel represented? What are stride and pitch and what do you need ...

Now that Presentation feedback has finally landed in Weston ( feedback , flags ), people are starting to pay attention to the output timin...

This is a short and vague glimpse to the interfaces that the Linux kernel offers to user space for display and graphics management, from th...

In the last two (or three?) weeks at Collabora I have been looking into a Wayland protocol extension that would allow accurately timed pre...

Raspberry Pi is a nice tiny computer with a relatively powerful VideoCore graphics processor, and an ARM core bolted on the side running Li...

How would one start implementing support for graphics hardware accelerated Wayland clients on an embedded platform that only has proprietar...

Of the Wayland demo clients in the Weston repository , simple-shm is the simplest. All the related code is in that one file, and it interf...

Recently I drew some diagrams of how an EGL library relates to the Wayland stack. Here I am presenting the Mesa EGL version of them with th...