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2025-01-21 |
Drawing graphics without X11 or Wayland on NetBSD |
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People who are interested in low-level graphics, programming, or just how to do neat tricks with a terminal may be interested in this tutorial. Julio Merino demonstrates how to draw graphics directly to the screen without needing to use Wayland or X11 display servers. "The EndBASIC console can now run directly on a framebuffer exposed by the kernel. No X11 nor Wayland in the picture (pun intended). But how? The answer lies in NetBSD's flexible wscons framework, and this article dives into what it takes to render graphics on a standard Unix system. I've found this exercise exciting because, in the old days, graphics were trivial (mode 13h, anyone?) and, for many years now, computers use framebuffer-backed textual consoles. The kernel is obviously rendering “graphics” by drawing individual letters; so why can't you, a user of the system, do so too?" The tutorial goes on to demonstrate how to create graphics without relying on popular graphics technologies such as X11. |
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