Hi all!

This month I’ve finally finished my initial work on HDR10 support for wlroots! My branch supports playing both SDR and HDR content on either an SDR or HDR output. It’s a pretty basic version: wlroots only performs very basic gamut mapping, and has a simple luminance multiplier instead of proper tone mapping. Additionally the source content luminance and mastering display metadata isn’t taken into account. Thus the result isn’t as good as it could be, but that can be improved once the initial work is merged!

I’ve also been talking with dnkl about blending optical color values rather than electrical values in foot (“gamma-correct blending”). Thanks to the color-management protocol, foot can specify that its buffers contain linearly encoded values (as opposed to the default, sRGB) and can implement this blending method without sacrificing performance. See the foot pull request for more details.

We’ve been working on fixing the few last known blockers remaining for the next wlroots release, in particular related to scene-graph clipping, custom modes, and explicit synchronization. I hope we’ll be able to start the release candidate dance soon.

The NPotM is Bakah, a small utility to build Docker Bake configuration files with Buildah (the library powering Podman). I’ve written more about the motivation and design of this tool in a separate article.

I’ve released tlstunnel 0.4 with better support for certificate files and some bugfixes. The sogogi WebDAV file server got support for graceful shutdown and Unix socket listeners thanks to Krystian Chachuła. Last, mako 1.10 adds a bunch of useful features such as include directives, more customization for border sizes and icon border radius, and a --no-history flag for makoctl dismiss.

See you next month!