[$] The Linux graphics stack in a nutshell, part 1

Linux graphics developers often speak of modern Linux graphics
when they refer to a number of individual software components and how they
interact
with each other.
Among other things, it's a mix of kernel-managed display resources,
Wayland for compositing, accelerated 3D rendering, and decidedly not X11.
In a two-part series, we will take a fast-paced journey
through the graphics code to see how it converts application data
to pixel data and displays it on the screen. In this installment, we look
at application rendering, Mesa internals, and the
necessary kernel features.