DRM Framebuffers are also the preferred way to interface with Vulkan renderers in GTK. For example, if you wanted to make a game scene editor with gnome, you could render the scene to a DRM Framebuffer and use a GTKGraphicsOffload widget to indicate that it will continue to be updated outside of the event loop.

In practice I’ve never been able to get this work. Static images totally fine. Graphics offloading fails and manually refreshing the image causes some sort of memory leak in the GPU